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Environmental Factor

Environmental Factor

Your Online Source for NIEHS News

June 2019

RIVER grants support innovative researchers

Six scientists who conduct transformative research received grants in this second year of the NIEHS program.

Jenny Collins, RIVER program coordinator Collins coordinates oversight of nanotechnology environmental health and safety program and the Children’s Health Exposure Analysis Resource, among other programs. (Photo courtesy of Steve McCaw)

NIEHS announced six new grant awards June 1 to innovative scientists in the field of environmental health sciences. Now in its second year, the NIEHS Revolutionizing Innovative, Visionary Environmental health Research (RIVER) program is part of the institute’s ongoing effort to support pioneering, independent scientists. Traditionally, NIEHS and other parts of the National Institutes of Health award funds based on the particular research project that is proposed.

“The program gives researchers intellectual and administrative freedom, as well as sustained support for up to eight years, so the scientists can push their work in new and important directions,” said Jenny Collins, program coordinator for RIVER.

“The program seeks NIEHS grantees who have demonstrated a broad vision and shown the potential to continue their transformative research,” she added, noting that the funding allows scientific flexibility and provides stability for the researcher.

Tackling the biodynamic interface

Researchers in the field of environmental health sciences typically collect information on the components of the environment and link that to health outcomes using statistical tools.

Manish Arora, Ph.D., from Icahn School of Medicine at Mount Sinai, and his team have proposed a theory — the Biodynamic Interface — that describes an interface between the environment and the human body.

By applying this theory and newly developed technology to disorders that appear at all stages of life, the team hopes to develop early warning systems to predict, and perhaps even prevent, diseases decades before any clinical signs are apparent.

Manish Arora, Ph.D., Icahn School of Medicine, Mount Sinai Arora runs the Exposure Biology Lab in the Senator Frank R. Lautenberg Environmental Health Sciences Laboratory. (Photo courtesy of Manish Arora)

Stabilizing fatty acids to prevent disease

Epoxy fatty acids (EpFAs), including omega-3 fatty acids, are part of natural biological processes that maintain health.

Bruce Hammock, Ph.D., from the University of California, Davis (UCD), studies how chemical exposures and other factors disrupt these processes and lead to disease.

He is also developing approaches to stabilize EpFAs to prevent and treat diseases. In animal models, some substances that inhibit the breakdown of EpFAs are helpful for treating pain, cancer, Parkinson’s disease, and other diseases.

Patricia Opresko, Ph.D., University of Pittsburgh Opresko’s lab works at the interface between the fields of DNA damage and repair, and telomere biology. (Photo courtesy of Patricia Opresko)

Telomeres get attention with new tool

DNA is packaged into chromosomes, with structures at the ends, known as telomeres, that play important roles in maintaining normal cell functions. Shortened or damaged telomeres may contribute to cancer and diseases associated with aging.

Patricia Opresko, Ph.D., from the University of Pittsburgh, and her team developed an innovative tool that uses light and small molecule probes to damage specific DNA sequences in telomeres. Using this technology, her research team studies how telomere damage occurs and how it leads to disease.

A protein in Parkinson’s disease

Kim Tieu, Ph.D., from Florida International University, will study the role of dynamin-related, protein-1 (Drp1) in Parkinson’s disease. Drp1 is a protein that plays a role in the splitting of mitochondria, which are the energy-producing component in cells.

This protein has also been thought to play a role in brain disorders such as Parkinson’s disease, Alzheimer’s disease, and Huntington’s disease. Based on his recent discovery of a new function of Drp1, Tieu will research the protein’s role in neurotoxicity by looking at brain cell interactions. His team will also explore the role of Drp1 in toxicity after exposure to manganese or pesticides, both alone and in combination with gut bacteria.

Breaking down environmental chemicals

Wen Xie, M.D., Ph.D., University of Pittsburgh Xie is also a member of the Pittsburgh Liver Research Center and studies nuclear receptor-mediated gene regulation in liver metabolism and liver diseases. (Photo courtesy of Wen Xie)

Wen Xie, M.D., Ph.D., at the University of Pittsburgh, is studying receptors that can bind xenobiotic factors, or factors from outside the body, such as environmental chemicals. The same receptors can also bind factors that exist naturally inside the body, or endobiotics.

His research team will study how xenobiotic receptors regulate the ability to break down environmental chemicals and how the receptors regulate normal body functions. With this information, Xie will design strategies to target these receptors for new therapeutics to prevent and treat diseases, and to reduce toxicity from environmental exposures.

A multifaceted study of autism spectrum disorder

Mark Zylka, Ph.D., from the University of North Carolina at Chapel Hill, is leading a three-pronged approach to identify exposure risks and individuals susceptible to or having autism spectrum disorder.

First, his team will identify environmental chemicals and mixtures that target molecular pathways involved in neurodevelopment. Second, a network of researchers will characterize real-world exposures to these chemicals. Third, using specific gene variants that have been linked to autism, the research team will study genetic susceptibility to toxicity from chemical exposures in animals to help identify and confirm susceptibility genes in humans, and how these genes influence toxicity.

(Sheena Scruggs, Ph.D., is the Digital Outreach Coordinator in the NIEHS Office of Communications and Public Liaison.)


Bruce Hammock, Ph.D. Longtime grantee Hammock directs the UCD Superfund Research Program. His lab studies the biochemical basis of human and environment interactions. (Photo courtesy of Bruce Hammock)
Kim Tieu, Ph.D. Tieu leads the Parkinson’s Disease Research Laboratory, which studies mechanisms of neuronal dysfunction and degeneration as seen in Parkinson’s disease. (Photo courtesy of Kim Tieu)
Mark Zylka, Ph.D. Zylka’s lab studies genetic and environmental risks for autism, and molecular and brain mechanisms that underlie pain sensation. (Photo courtesy of Mark Zylka)
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