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California-Based Genomics Startup Secures $600 Million in Funding to Deliver $100 Whole Human Genome with Its New High-Throughput, Low-Cost Sequencing Platform

Ultima Genomics says it is emerging from “stealth mode” with millions in fresh capital and technology capable of sequencing whole human genomes for a fraction of the cost

Investors seem to be optimistic that an emerging genetics company has the proprietary solution to sequence a whole human genome for just $100. If true, this is a development that would be of interest to clinical laboratory managers and pathologists.

The company, Ultima Genomics of Newark, Calif., recently announced that it had raised $600 million from the investment community. In a press release last month, the company announced it has “emerged from stealth mode with a new high-throughput, low-cost sequencing platform that delivers the $100 genome.”

The press release goes on to state that Ultima will unleash a new era in genomics-driven discoveries by developing a “fundamentally new sequencing architecture designed to scale beyond conventional approaches, including completely different approaches to flow cell engineering, sequencing chemistry, and machine learning.”

Are we at the cusp of a revolution in genomics? Ultima Genomics’ founder and CEO, Gilad Almogy, PhD, believes so.

“Our architecture is intended for radical scaling, and the $100 genome is merely the first example of what it can deliver,” he said in the press release. “We are committed to continuously drive down the cost of genomic information until it is routinely used in every part of the healthcare system.”

From an Estimated Cost of $3 Billion to $450 in Just 30 Years!

Whole genome sequencing (WGS) has decreased dramatically in cost since research into the technology required got started in the early 1990s with the publicly-funded Human Genome Project. At that time, the cost to sequence the entire human genome was estimated at around $3 billion. Then, in 1998, John Craig Venter created Celera Genomics (now a subsidiary of Quest Diagnostics) and was the first to sequence the whole human genome (his own) and at a significantly lower cost of around $300 million.

The cost continued to drop as technology improved. In 2001, the cost to sequence the whole human genome hovered around $100 million. Twenty years later that cost had dropped to about $450/sequence, according to data compiled by the National Human Genome Research Institute (NHGRI), a division of the National Institutes of Health (NIH).

When DNA sequencer Illumina announced in 2014 the arrival of the $1,000 genome, the news was expected to put whole genome sequencing on the road to becoming routine, Forbes reported. But that prediction didn’t pan out.

Ultima Genomics’ $100 price point, however, could be game changing. It would make the cost of decoding a human genome affordable for nearly everyone and accelerate the growth of personalized medicine in clinical laboratory diagnostics.

Applied Physics versus Biological Sciences

According to GEN, Almogy brings a tech background to Ultima—his PhD is in applied physics, not the biological sciences. He founded Ultima in 2016 after serving as founder, president, and CEO at Fulfil Solutions, a manufacturer of custom automation robotics systems. At Ultima, his goal is to “unleash the same relentless scaling in sequencing” that was used to drive down the cost of computing power and transform modern life.

“Ultima is the real deal, with good technology,” Raymond McCauley, cofounder and Chief Architect at BioCurious, and Chair of Digital Biology at Singularity Group, told Singularity Hub. “They’ve been working on an Illumina killer for years.”

Gilad Almogy, PhD
 “We designed our new sequencing architecture to scale beyond conventional technologies, and are excited to soon make the UG 100, our first instrument using this architecture, commercially available to more customers,” said Gilad Almogy, PhD (above), Ultima Genomics’ founder and CEO, in a press release. “In the future, we aim to continuously improve our technology, further drive down costs, and increase the scale of genomic information to improve patient outcomes.” At $100/sequence, whole genome sequencing may well become commonly available to improve precision medicine diagnostics and clinical laboratory testing. (Photo copyright: Ultima Genomics.)

In late May, Ultima released “Cost-efficient Whole Genome-Sequencing Using Novel Mostly Natural Sequencing-by-Synthesis Chemistry and Open Fluidics Platform,” a preprint that details the technology underlying Ultima’s UG100 platform. That news was followed by presentations of early scientific results by research institutes currently using Ultima’s technology during the Advances in Genome Biology and Technology 2022 annual meeting.

TechCrunch reported that Ultima’s UG100 sequencing machine and software platform can perform a complete sequencing of a human genome in about 20 hours, with precision comparable to existing options, but does so at a far lower cost per gigabase (Gb), equal to one billion base pairs.

According to the Ultima Genomics website, its breakthroughs include:

  • An open substrate that creates a massive, low-cost reaction surface that delivers many billions of reads while avoiding costly flow cells and complicated fluidics.
  • Novel scalable chemistry that combines the speed, efficiency, and read lengths of natural nucleotides with the accuracy and scalability of endpoint detection.
  • A revolutionary sequencing hardware that uses spinning circular wafers that enable efficient reagent use, zero crosstalk, and ultra-high-speed scanning of large surfaces.

“We may be on the brink of the next revolution in sequencing,” Beth Shapiro, DPhil, an evolutionary molecular biologist at the University of California, Santa Cruz (UCSC), told Science. Shapiro is a professor of ecology and evolutionary biology and an HHMI Investigator at UCSC and Director of Evolutionary Genomics at the UCSC Genomics Institute.

Ultima Genomics maintained a low profile since its founding six years ago. But that changed in May when it announced it had raised $600 million from multiple investors, including:

Affordable Genomics Will Lead to ‘Millions of Tests per Year’

Exact Sciences’ Chairman and CEO Kevin Conroy—whose Wisconsin-based molecular diagnostics company recently entered into a long-term supply agreement for Ultima Genomic’s NGS technologies—believes low-cost genomic sequencing will improve cancer screening and disease monitoring.

“Exact Sciences believes access to differentiated and affordable genomics technologies is critical to providing patients better information before diagnosis and across all stages of cancer treatment,” Conroy said in a press release. “Ultima’s mission to drive down the cost of sequencing and increase the use of genomic information supports our goal to provide accurate and affordable testing options across the cancer continuum. This is particularly important for applications like cancer screening, minimal residual disease, and recurrence monitoring, which could lead to millions of tests per year.”

GEN pointed out that Ultima’s 20-hour turnaround time is fast and its quality on par with its competitors, but that it is Ultima’s $1/Gb price (noted in the preprint) that will set it apart. That cost would be a fraction of Illumina’s NextSeq ($20/Gb) and Element Biosciences’ AVITI ($5/Gb).

Almogy told TechCrunch that Ultima is working with early access partners to publish more proof-of-concept studies showing the capabilities of the sequencing technique, with broader commercial deployment of the technology in 2023. Final pricing is yet to be determined, he said.

If the $100 genome accelerates the pace of medical discoveries and personalized medicine, clinical laboratory scientists and pathologists will be in ideal positions to capitalize on what the executives and investors at Ultima Genomics hope may become a revolution in whole human genome sequencing and genomics. 

—Andrea Downing Peck

Related Information:

Ultima Genomics Delivers the $100 Genome

Ultima Genomics Claims $100 Full Genome Sequencing after Stealth $600M Raise

A $100 Genome? New DNA Sequencers Could Be a ‘Game Changer’ for Biology, Medicine

Ultima Genomics and Exact Sciences Enter Long-Term Supply Agreement Aimed at Improving Patient Access to Genomic Testing by Driving Down Sequencing Costs

Cost-Efficient Whole Genome-Sequencing Using Novel Mostly Natural Sequencing-by-Synthesis Chemistry and Open Fluidics Platform

Ultima Genomics Bursts onto the Scene Targeting the “$100 Genome”

MGI Announces Commercial Availability of DNBSEQ Sequencers in the United States

The $1,000 Genome Arrives–for Real, This Time

Ultima Genomics Claims the $100 Genome and Raises $600M to Go Even Lower

Diagnosing Ovarian Cancer Using Perception-based Nanosensors and Machine Learning

Two studies show the accuracy of perception-based systems in detecting disease biomarkers without needing molecular recognition elements, such as antibodies

Researchers from multiple academic and research institutions have collaborated to develop a non-conventional machine learning-based technology for identifying and measuring biomarkers to detect ovarian cancer without the need for molecular identification elements, such as antibodies.

Traditional clinical laboratory methods for detecting biomarkers of specific diseases require a “molecular recognition molecule,” such as an antibody, to match with each disease’s biomarker. However, according to a Lehigh University news release, for ovarian cancer “there’s not a single biomarker—or analyte—that indicates the presence of cancer.

“When multiple analytes need to be measured in a given sample, which can increase the accuracy of a test, more antibodies are required, which increases the cost of the test and the turnaround time,” the news release noted.

The multi-institutional team included scientists from Memorial Sloan Kettering Cancer Center, Weill Cornell Medicine, the University of Maryland, the National Institutes of Standards and Technology, and Lehigh University.

Unveiled in two sequential studies, the new method for detecting ovarian cancer uses machine learning to examine spectral signatures of carbon nanotubes to detect and recognize the disease biomarkers in a very non-conventional fashion.

Daniel Heller, PhD
 
“Carbon nanotubes have interesting electronic properties,” said Daniel Heller, PhD (above), in the Lehigh University news release. “If you shoot light at them, they emit a different color of light, and that light’s color and intensity can change based on what’s sticking to the nanotube. We were able to harness the complexity of so many potential binding interactions by using a range of nanotubes with various wrappings. And that gave us a range of different sensors that could all detect slightly different things, and it turned out they responded differently to different proteins.” This method differs greatly from traditional clinical laboratory methods for identifying disease biomarkers. (Photo copyright: Memorial Sloan-Kettering Cancer Center.)

Perception-based Nanosensor Array for Detecting Disease

The researchers published their findings from the two studies in the journals Science Advances, titled, “A Perception-based Nanosensor Platform to Detect Cancer Biomarkers,” and Nature Biomedical Engineering, titled, “Detection of Ovarian Cancer via the Spectral Fingerprinting of Quantum-Defect-Modified Carbon Nanotubes in Serum by Machine Learning.”

In the Science Advances paper, the researchers described their development of “a perception-based platform based on an optical nanosensor array that leverages machine learning algorithms to detect multiple protein biomarkers in biofluids.

“Perception-based machine learning (ML) platforms, modeled after the complex olfactory system, can isolate individual signals through an array of relatively nonspecific receptors. Each receptor captures certain features, and the overall ensemble response is analyzed by the neural network in our brain, resulting in perception,” the researchers wrote.

“This work demonstrates the potential of perception-based systems for the development of multiplexed sensors of disease biomarkers without the need for specific molecular recognition elements,” the researchers concluded.

In the Nature Biomedical Engineering paper, the researchers described a fined-tuned toolset that could accurately differentiate ovarian cancer biomarkers from biomarkers in individuals who are cancer-free.

“Here we show that a ‘disease fingerprint’—acquired via machine learning from the spectra of near-infrared fluorescence emissions of an array of carbon nanotubes functionalized with quantum defects—detects high-grade serous ovarian carcinoma in serum samples from symptomatic individuals with 87% sensitivity at 98% specificity (compared with 84% sensitivity at 98% specificity for the current best [clinical laboratory] screening test, which uses measurements of cancer antigen 125 and transvaginal ultrasonography,” the researchers wrote.

“We demonstrated that a perception-based nanosensor platform could detect ovarian cancer biomarkers using machine learning,” said Yoona Yang, PhD, a postdoctoral research associate in Lehigh’s Department of Chemical and Biomolecular Engineering and co-first author of the Science Advances article, in the news release.

How Perception-based Machine Learning Platforms Work

According to Yang, perception-based sensing functions like the human brain.

“The system consists of a sensing array that captures a certain feature of the analytes in a specific way, and then the ensemble response from the array is analyzed by the computational perceptive model. It can detect various analytes at once, which makes it much more efficient,” Yang said.

The “array” the researchers are referring to are DNA strands wrapped around single-wall carbon nanotubes (DNA-SWCNTs).

“SWCNTs have unique optical properties and sensitivity that make them valuable as sensor materials. SWCNTS emit near-infrared photoluminescence with distinct narrow emission bands that are exquisitely sensitive to the local environment,” the researchers wrote in Science Advances.

“Carbon nanotubes have interesting electronic properties,” said Daniel Heller, PhD, Head of the Cancer Nanotechnology Laboratory at Memorial Sloan Kettering Cancer Center and Associate Professor in the Department of Pharmacology at Weill Cornell Medicine of Cornell University, in the Lehigh University news release.

“If you shoot light at them, they emit a different color of light, and that light’s color and intensity can change based on what’s sticking to the nanotube. We were able to harness the complexity of so many potential binding interactions by using a range of nanotubes with various wrappings. And that gave us a range of different sensors that could all detect slightly different things, and it turned out they responded differently to different proteins,” he added.

The researchers put their technology to practical test in the second study. The wanted to learn if it could differentiate symptomatic patients with high-grade ovarian cancer from cancer-free individuals. 

The research team used 269 serum samples. This time, nanotubes were bound with a specific molecule providing “an extra signal in terms of data and richer data from every nanotube-DNA combination,” said Anand Jagota PhD, Professor, Bioengineering and Chemical and Biomolecular Engineering, Lehigh University, in the news release.

This year, 19,880 women will be diagnosed with ovarian cancer and 12,810 will die from the disease, according to American Cancer Society data. While more research and clinical trials are needed, the above studies are compelling and suggest the possibility that one day clinical laboratories may detect ovarian cancer faster and more accurately than with current methods.   

—Donna Marie Pocius

Related Information:

Perception-Based Nanosensor Platform Could Advance Detection of Ovarian Cancer

Perception-Based Nanosensor Platform to Detect Cancer Biomarkers

Detection of Ovarian Cancer via the Spectral Fingerprinting of Quantum-Defect-Modified Carbon Nanotubes in Serum by Machine Learning

Machine Learning Nanosensor Platform Detects Early Cancer Biomarkers

Forbes Senior Contributor Covers Reasons for Growing Staff Shortages at Medical Laboratories and Possible Solutions

Factors contributing to shortage of med techs and other lab scientists include limited training programs in clinical laboratory science, pay disparity, and staff retention, notes infectious disease specialist Judy Stone, MD

Staff shortages are a growing challenge for medical laboratories, and now the problem has grabbed the attention of a major media outlet.

In a story she penned for Forbes, titled, “We’re Facing a Critical Shortage of Medical Laboratory Professionals,” senior contributor and infectious disease specialist Judy Stone, MD, wrote, “Behind the scenes at every hospital are indispensable medical laboratory professionals. They performed an estimated 13 billion laboratory tests in the United States each year before COVID. Since the pandemic began, they have also conducted almost 997 million diagnostic tests for COVID-19. The accuracy and timeliness of lab tests are critically important, as they shape approximately two-thirds of all medical decisions made by physicians.”

Stone was citing data from the US Bureau of Labor Statistics.

Though Stone states in her Forbes article that clinical laboratories in both the US and Canada are facing staff shortages, she notes that the problem is more acute in the US.

As Dark Daily reported in February, the so-called “Great Resignation” caused by the COVID-19 pandemic has had a severe impact on clinical laboratory staffs, creating shortages of pathologists as well as of medical technologists, medical laboratory technicians, and other lab scientists who are vital to the nation’s network of clinical laboratories.

In her analysis, however, Stone accurately observes that the problem pre-dates the pandemic. For examples she cites two surveys conducted in 2018 by the American Society for Clinical Pathology (ASCP):

Many pathologists and clinical laboratory managers would agree that Stone is right. Dark Daily has repeatedly reported on growing staff shortages at clinical laboratories worldwide.

In “Critical Shortages of Supplies and Qualified Personnel During the COVID-19 Pandemic is Taking a Toll on the Nation’s Clinical Laboratories says CAP,” Dark Daily reported on presentations given during the 2021 College of American Pathologists (CAP) virtual meeting in which presenters discussed the ever-increasing demand for COVID-19 testing that had placed an enormous amount of stress on clinical laboratories, medical technologists (MTs), and clinical laboratory scientists (CLSs) responsible for processing the high volume of SARS-CoV-2 tests, and on the supply chains medical laboratories depend on to receive and maintain adequate supplies of testing materials.

And in “Lab Staffing Shortages Reaching Dire Levels,” Dark Daily’s sister publication, The Dark Report, noted that CAP Today had characterized the current lab staffing shortage as going “from simmer to rolling boil” and that demand for medical technologists and other certified laboratory scientists far exceeds the supply. Consequently, many labs now use overtime and temp workers to handle daily testing, a strategy that has led to staff burnout and more turnover.

Judy Stone, MD
“There is a critical shortage of medical laboratory professionals in the US, and in Canada to a lesser extent,” wrote infectious disease specialist Judy Stone, MD (above), in an article she penned for Forbes. “Here [in the US],” she added, “we are 20-25,000 short on staff, with only 337,800 practicing. That is roughly one medical laboratory scientist per 1,000 people.” Clinical laboratories are well aware of the problem. A solution to solve it and return labs to former staffing levels is proving elusive. (Photo copyright: Forbes.)

Why the Shortfall?

In her Forbes article, Stone notes the following as factors behind the shortages:

  • Decline in training programs. “There are only [approximately] 240 medical laboratory technician and scientist training programs in the US, a 7% drop from 2000,” Stone wrote, adding that some states have no training programs at all. She notes that lab technicians must have a two-year associate degree while it takes an average of five years of post-secondary education to obtain a lab science degree.
  • Pay disparities. Citing data from the ASCP, Stone wrote that “medical lab professionals are paid 40%-60% less than nurses, physical therapists, or pharmacists.” Moreover, given the high cost of training, “many don’t feel the salary is worth the high investment,” she added.
  • Staff retention. In the ASCP’s 2018 job satisfaction survey, 85.3% of respondents reported burnout from their jobs, 36.5% cited problems with inadequate staffing, and nearly that many complained that workloads were too high.
  • Inconsistent licensing requirements. These requirements “are different from state to state,” Stone wrote. For example, the American Society for Clinical Laboratory Science (ASCLS) notes that 11 states plus Puerto Rico mandate licensure of laboratory personnel whereas others do not. Each of those states has specific licensing requirements, and while most offer reciprocity for other state licenses, “California [for example] does not recognize any certification or any other state license.”

In a 2018 report, “Addressing the Clinical Laboratory Workforce Shortage,” the ASCLS cited other factors contributing to the shortages, including retirement of aging personnel and increased demand for lab services.

Possible Solutions

Stone suggested the following remedies:

  • Improve working conditions. “We need to reduce the stress and workload of the lab professionals before we reach a greater crisis,” Stone wrote.
  • Standardize state certification. This will facilitate “mobility of staff and flexibility in responding to needs,” Stone suggested.
  • Improve education and training opportunities. The ASCLS has called for clinical lab science to be included in the Title VII health professions program, which provides funding for healthcare training. Rodney Rohde, PhD, a clinical laboratory science professor at Texas State University, “also suggests outreach to middle and high school STEM programs, to familiarize students early with career opportunities in the medical laboratory profession,” Stone wrote.
  • Recruit foreign workers. Stone suggested this as an interim solution, with programs to help them acclimate to practice standards in the US.

It will likely take multiple solutions like these to address the Great Resignation and bring the nation’s clinical laboratory staffing levels back to full. In the meantime, across the nation, a majority of clinical laboratories and anatomic pathology groups operate short-staffed and use overtime and temporary workers as a partial answer to their staffing requirements.

Stephen Beale

Related Information:

We’re Facing a Critical Shortage of Medical Laboratory Professionals

Our Lab Testing Capacity Is Getting Dangerously Low

Addressing the Clinical Laboratory Workforce Shortage

What You Need to Know about Working as a Lab Professional in a Different State

The American Society for Clinical Pathology’s Job Satisfaction, Well-Being, and Burnout Survey of Laboratory Professionals

The American Society for Clinical Pathology’s 2018 Vacancy Survey of Medical Laboratories in the United States

Critical Shortages of Supplies and Qualified Personnel During the COVID-19 Pandemic is Taking a Toll on the Nation’s Clinical Laboratories says CAP

Lab Staffing Shortages Reaching Dire Levels

UC San Diego Engineers Develop Microneedle Wearable Patch That Measures Glucose, Alcohol, Muscle Fatigue in Real Time

Wearable microneedle sensors that track multiple biomarkers in interstitial fluid are finding their way into chronic disease monitoring and sample collecting for clinical laboratory testing

Wearable devices that replace finger sticks and blood draws for monitoring biomarkers of chronic diseases such as diabetes are the holy grail of non-invasive (or at least minimally invasive) technologies that collect specimens for clinical laboratory testing.

Now, in their quest for alternatives to invasive phlebotomy blood draws, engineers at University of California San Diego’s (UCSD) Center for Wearable Sensors have added their own wearable device to the mix. The scientists developed a “lab-on-the-skin” multi-tasking microneedle sensor that monitors multiple biomarkers simultaneously, according to a UCSD news release.

Joseph Wang, PhD
“This is like a complete lab on the skin,” said Joseph Wang, PhD (above), Distinguished Professor of Nanoengineering at UC San Diego and Director of UCSD’s Center of Wearable Sensors, in a news release. “It is capable of continuously measuring multiple biomarkers at the same time, allowing users to monitor their health and wellness as they perform their daily activities.” UC San Diego’s microneedle patch for monitoring biomarkers of disease certainly would be popular with patients who must regularly undergo painful blood draws for clinical laboratory testing. (Photo copyright: UC San Diego.)

The UCSD engineers published their findings in the journal Nature Biomedical Engineering, titled, “An Integrated Wearable Microneedle Array for the Continuous Monitoring of Multiple Biomarkers in Interstitial Fluid.”

Advantage of Monitoring Multiple Biomarkers in Real Time

While current glucose monitors on the market only measure glucose, the UCSD wearable device also monitors alcohol and lactate, providing other additional information to diabetics when engaged in activities that affect those biomarkers.

For example, UCSD’s microneedle sensor allows diabetics to monitor their glucose level when drinking alcohol, which can lower glucose levels. Additionally, monitoring lactate while exercising also could be beneficial since physical activity influences the body’s ability to regulate glucose.

“With our wearable, people can see the interplay between their glucose spikes or dips with their diet, exercise, and drinking of alcoholic beverages. That could add to their quality of life as well,” said Farshad Tehrani, a nanoengineering PhD graduate researcher in Wang’s lab at UCSD and one of the co-first authors of the study, in the news release.

UC San Diego’s wearable microneedle patch
UC San Diego’s wearable microneedle patch (above) is about the size of a stack of six quarters and simultaneously monitors glucose, alcohol, and lactate levels continuously. It affixes to the skin through a patch of microneedles each about one-fifth the width of a human hair. The microneedles barely penetrate the surface of the skin to sample biomolecules in the interstitial fluid and are not painful. The quarter-sized patch is worn on the upper arm and transmits its data to a smartphone app. The microneedle patch is disposable, and the reusable electronic case is rechargeable using an off-the-shelf wireless charging pad. (Photo copyright: Laboratory for Nanobioelectronics/UC San Diego.)

Other Microneedle Wearable Monitoring Patches

The quest for a painless alternative to in-patient blood draws for many clinical laboratory tests has been ongoing worldwide for years.

In “Researchers Develop ‘Smart’ Microneedle Adhesive Bandage System for Monitoring Sodium, Glucose, pH, and More,” Dark Daily reported on a proof-of-concept study conducted by scientists from Israel and China who developed a “smart” microneedle adhesive bandage that measures and monitors in real time three critical biomarkers that currently require invasive blood draws for medical laboratory tests commonly performed on patients in hospitals.

And in “Researchers at Washington University in St. Louis Use Microneedle Patch with Fluorescent Nanolabels to Detect Biomarkers in Skin’s Interstitial Fluid,” we covered how engineers at the McKelvey School of Engineering at Washington University had developed a microneedle patch with plasmonic-fluor, ultrabright gold nanolabels that light up target proteins making the biomarkers up to 1,400 times brighter at low concentrations compared to traditional fluorescent labels.

While further research and validation of studies are needed before UC San Diego’s wearable microneedle sensor patch can be deployed to monitor chronic diseases, it is in good company. Diabetics and other suffers of similar chronic diseases can look forward to a future where they can monitor their health conditions in real time without the need for invasive blood draws and clinical laboratory testing. 

Andrea Downing Peck

Related Information:

An Integrated Wearable Microneedle Array for the Continuous Monitoring of Multiple Biomarkers in Interstitial Fluid

Multi-Tasking Wearable Continuously Monitors Glucose, Alcohol and Lactate

‘A Laboratory on the Skin’: UC San Diego Lab Works to Make New Wearable Health Sensors Part of Our Daily Look

Researchers Develop ‘Smart’ Microneedle Adhesive Bandage System for Monitoring Sodium, Glucose, pH, and More

Researchers at Washington University in St. Louis Use Microneedle Patch with Fluorescent Nanolabels to Detect Biomarkers in Skin’s Interstitial Fluid

German Researchers Create Non-invasive Lab-on-a-Chip Biosensor That Detects Antibiotic Levels from Breath Samples

Should the device prove effective, it could replace invasive point-of-care blood draws for clinical laboratory testing during patient drug therapy monitoring

What if it were possible to perform therapeutic drug monitoring (TDM) without invasive blood draws using breath alone? Patients fighting infections in hospitals certainly would benefit. Traditional TDM can be a painful process for patients, one that also brings risk of bloodline infections. Nevertheless, regular blood draws have been the only reliable method for obtaining viable samples for testing.

One area of critical TDM is in antibiotic therapy, also known as personalized antibiotherapy. However, for antibiotic therapy to be successful it typically requires close monitoring using point-of-care clinical laboratory testing.

Now, a team of engineers and biotechnologists from the University of Freiburg in Germany have developed a biosensor that can use breath samples to measure antibiotic concentrations present in blood, according to a University of Freiburg press release.

The team’s non-invasive collection method requires no needle sticks and can allow for frequent specimen collections to closely monitor the levels of an antibiotic prescribed for a patient. The biosensor also provides physicians the ability to tailor antibiotic regimens specific to individual patients, a core element of precision medicine.

The researchers published their findings in the journal Advanced Materials, titled, “Biosensor-Enabled Multiplexed On-Site Therapeutic Drug Monitoring of Antibiotics.”

Can Dincer, PhD
 
“Until now researchers could only detect traces of antibiotics in the breath,” said Can Dincer, PhD (above), Junior Research Group Leader at the University of Freiburg, and one of the authors of the study, in the press release. “With our synthetic proteins on a microfluid chip, we can determine the smallest concentrations in the breath condensate and [how] they correlate with the blood values.” Should the breath biosensor prove effective in clinical settings, painful blood draws for clinical laboratory testing at the point of care could become obsolete. (Photo copyright: Conny Ehm/University of Freiburg.)

Can a Breath Biosensor Be as Accurate as Clinical Laboratory Testing?

The University of Freiburg’s biosensor is a multiplex, microfluid lab-on-a-chip based on synthetic proteins that react to antibiotics. It allows the simultaneous measurement of several breath samples and test substances to determine the levels of therapeutic antibiotics in the blood stream.

To perform their research, the University of Freiburg team tested their biosensor on blood, plasma, urine, saliva, and breath samples of pigs that had been given antibiotics. The results the researchers achieved with their device using breath samples were as accurate as standard clinical laboratory testing, according to the press release.

The microfluidic chip contains synthetic proteins affixed to a polymer film via dry film photoresist (DFR) technology. These proteins are similar to proteins used by drug-resistant bacteria to sense the presence of antibiotics in their environment. Each biosensor contains an immobilization area and an electrochemical cell which are separated by a hydrophobic stopping barrier. The antibiotic in a breath sample binds to the synthetic proteins which generates a change in an electrical current. 

“You could say we are beating the bacteria at their own game,” said Wilfried Weber, PhD, Professor of Biology at the University of Freiburg and one of the authors of the research paper, in the press release.

Rapid Monitoring at Point-of-Care Using Breath Alone

The biosensor could prove to be a useful tool in keeping antibiotic levels stable in severely ill patients who are dealing with serious infections and facing the risk of sepsis, organ failure, or even death. Frequent monitoring of therapeutic antibiotics also could prevent bacteria from mutating and causing the body to become resistant to the medications.

“Rapid monitoring of antibiotic levels would be a huge advantage in hospital,” said H. Ceren Ates, PhD, scientific researcher at the University of Freiburg and one of the authors of the study in the press release. “It might be possible to fit the method into a conventional face mask.”

Along those lines, the researchers are also working on a project to create wearable paper sensors for the continuous measurement of biomarkers of diseases from exhaled breath. Although still in the development stages, this lightweight, small, inexpensive paper sensor can fit into conventional respiratory masks, according to a University of Freiburg press release.

Other Breath Analysis Devices Under Development

Devices that sample breath to detect biomarkers are not new. Dark Daily has regularly reported on similar developments worldwide.

In “NIST Scientists Enhance Frequency Comb Breathalyzer Enabling It to Detect Multiple Disease Biomarkers,” we reported on research conducted at JILA, a research center jointly operated by the National Institutes of Standards and Technology (NIST) and the University of Colorado Boulder, that could pave the way for real-time, noninvasive breath analysis to detect and monitor diseases, and potentially eliminate the need for many blood-based clinical laboratory tests.

And in “Will Blowing in a Device Be Useful in Screening for COVID-19? FDA Grants Its First EUA for a Breathalyzer SARS-CoV-2 Screening Test,” Dark Daily covered the FDA’s first ever emergency use authorization (EUA) for a portable breath test device designed to screen for SARS-CoV-2 infection. Developed by InspectIR Systems, the COVID-19 Breathalyzer identifies a chemical signature associated with SARS-CoV-2 in about three minutes with 91.2% sensitivity and 99.3% specificity.

Thus, University of Freiburg’s non-invasive lab-on-a-chip biosensor is worth watching. More research is needed to validate the effectiveness of the biosensor before it could be employed in hospital settings, however, monitoring and managing antibiotic levels in the body via breath samples could prove to be an effective, non-invasive method of providing personalized antibiotic therapy to patients.

Clinical trials on human breath samples are being planned by the University of Freiburg team. This type of precision medicine service may give medical professionals the ability to maintain proper medication levels within an optimal therapeutic window.

JP Schlingman

Related Information:

Antibiotic Levels Measurable in Breath for the First Time

Biosensor-Enabled Multiplexed On-Site Therapeutic Drug Monitoring of Antibiotics

A Breath of Fresh Information

NIST Scientists Enhance Frequency Comb Breathalyzer Enabling It to Detect Multiple Disease Biomarkers

Will Blowing in a Device Be Useful in Screening for COVID-19? FDA Grants Its First EUA for a Breathalyzer SARS-CoV-2 Screening Test

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