Reposted from U of U Health.
Our environment has a profound effect on our health, but the specifics of those effects can vary widely from person to person. Wildfire smoke that one person might find merely annoying could be debilitating to another. And the variable health consequences of environmental exposures aren’t always immediate or obvious, even when serious.
Yue Lu, assistant professor of molecular pharmaceutics.
But what if a doctor could tell you how the air quality where you live impacts your lungs, how your diet changes your gut health, and how a plethora of other environmental factors affect other organs throughout your body—all with a single blood draw?
It might sound like science fiction, and it is—for now. But Yue Lu is trying to make it a reality, now powered by a New Innovator Award through the National Institutes of Health (NIH) Common Fund’s High-Risk, High-Reward Research program. Lu, an assistant professor of molecular pharmaceutics at the University of Utah’s College of Pharmacy, received this prestigious award, which is granted to early-career researchers pursuing creative and innovative projects with the potential for broad societal impact.
“Dr. Lu’s science is highly innovative and can lead to a better understanding of how our environment is impacting our bodies and health,” said Rachel Hess, associate vice president for research at U of U Health.
Decoding microscopic messages
Lu’s research takes advantage of a biological phenomenon that is increasingly coming into the spotlight: tiny bubbles called extracellular vesicles (EVs). Cells throughout your body release these bubbles into the bloodstream, containing a wide array of biological molecules that vary depending on what kind of cell they come from—liver cells, brain cells, or so forth. It’s as if every cell in your body is throwing thousands of messages in a bottle into the ocean of your bloodstream, every day.
What those messages mean—if they mean anything—is largely unknown. But Lu thinks they could provide valuable hints about their senders, allowing researchers to understand how the environment is impacting organ systems without anything more invasive than a blood draw.
“What if we could monitor the health impact of environmental exposures with organ-level accuracy across large populations?” Lu asked. She intends to use EVs to enable precise and high-throughput health analysis on multiple scales.
Lu and her team aim to develop multiple new tools to detect and understand EVs. One of the tools will separate out single EVs from a blood sample and analyze the molecules in each one. (It’s the equivalent of reading a single message in a bottle in detail.) Other tools will help piece together fragmentary information from many EVs into a coherent picture of organ health and look at large numbers of EVs in aggregate.
Lu’s first target is to study EVs coming from the lungs to understand lung health, including how lung health is affected by air quality and other environmental exposures. But if her system works, it could be equally useful for studying how other exposures affect every other organ system. A key advantage of the project is its scalability; a blood draw is much faster, simpler, and safer than a tissue biopsy. In theory, a single blood sample could provide information about every organ in the body.
Lu hopes that the tools her team builds will shed new light on how the environment affects health. “Our long-term vision is an extracellular vesicle tricorder that provides a new lens for understanding human health and reveals hidden threats among everyday exposures,” she said.
This research will be funded through award number DP2 ES037422-01 through the National Institutes of Health.