Profiles

Postdoc Profile: Going the Extra Mile

Dr. Ayland Letsinger examines the effects of exercise on the brain

Dr. Ayland Letsinger

Every January, gyms are flooded with new members using the beginning of a new year as a burst of motivation to get fit. When many of these new exercise enthusiasts abandon their new healthy habit within a couple months, they shouldn’t feel guilty, according to IRP postdoctoral fellow Ayland Letsinger, Ph.D. He believes there’s a genetic component behind our fluctuating interest in exercise, and he spends his days in his IRP lab investigating such biological factors behind the motivation to move.

“More people would rather binge-watch 'Stranger Things’ for three hours than do 30 minutes of moderate physical activity, and there may be a biological basis behind it,” he explains.

IRP’s Bruce Tromberg Elected to National Academy of Medicine

Advances in Bioengineering Drive Life-Saving Medicine

Dr. Bruce Tromberg

“To discover new things, you need new ways to see them,” says Bruce J. Tromberg, Ph.D., Director of the National Institute of Biomedical Imaging and Bioengineering (NIBIB). That’s why he has spent the past 30 years of his career improving and inventing tools to help doctors and scientists conduct cutting-edge biomedical research and apply their findings to the task of saving lives. This past October, Dr. Tromberg was elected to the National Academy of Medicine (NAM) for his contributions to the fields of biophotonics and biomedical optics, as well as his leadership in the biomedical engineering and imaging community.

IRP’s Eugene Koonin Elected to National Academy of Medicine

Scientist Decoded DNA to Build a Genomic Tree of Life

Dr. Eugene Koonin

In 1973, the geneticist Theodosius Dobzhansky wrote a now-famous essay that declared, “Nothing in biology makes sense except in the light of evolution.” That sentiment has served as the guiding principle for the career of IRP senior investigator Eugene V. Koonin, Ph.D., who was elected to the National Academy of Medicine (NAM) in October 2022 for his contributions to the field of evolutionary biology.

Dr. Koonin’s pioneering efforts to identify clusters of similar genes found in different organisms passed down by a common ancestor — known as ‘homologous’ genes — has helped to unlock the secrets encoded in DNA and create a foundation for the systematic study of how genes evolve and function. His lab at the National Library of Medicine’s National Center for Biotechnology Information (NCBI) uses a combination of genomic sequencing and mathematical modeling to compare genes across species and determine how they work and where they came from. From this information, his team can develop a systematic framework to show the relationship between genes as they evolved. It’s like drawing the tree of life, but on a genomic scale.

Michael Gottesman Reflects on Tenure Leading Intramural Research Program

Renowned Cancer Scientist Stepped Down After 29 Years in Position

Dr. Michael Gottesman

Dr. Michael Gottesman has been a member of the NIH community since 1976. He has held many positions throughout his tenure, including spending 29 years as the Deputy Director of Intramural Research (DDIR). He stepped down as DDIR this past year and has returned to focusing solely on being Chief of the Lab of Cell Biology at the National Cancer Institute (NCI). Dr. Gottesman recently participated in an interview with the NIH Office of Technology Transfer, excerpts of which we are re-posting here on the "I Am Intramural" blog. 

A Year of Honors for IRP Cancer Researchers

Four NIH Scientists Received Prestigious Recognition in 2022

clockwise from top-left: Dr. Michael Lichten, Dr. Susan Lea, Dr. Kandice Tanner, and Dr. Deborah Morrison

The complexities of cancer, which is actually a collection of many diseases, has made conquering it an enormous challenge. Fortunately, researchers in the NIH Intramural Research Program are up to the task. This year, four IRP investigators in NIH’s National Cancer Institute (NCI) have been recognized for their groundbreaking contributions to answering fundamental questions about the disease and the immune system’s response to similar threats.

Postdoc Profile: Eavesdropping On Bacterial Banter

Dr. Tiffany Zarrella Examines Communication Between Bacteria to Combat Persistent Infections

Dr. Tiffany Zarella

Facebook’s nearly 3 billion users may seem like a huge social network, but it pales in comparison to the conversations among the trillions of microbes that live inside a single human body. Few people know this better than IRP postdoctoral fellow Tiffany Zarrella, Ph.D., who spends her days eavesdropping on the messages bacteria send to one another to improve treatment for stubborn infections.

Dr. Zarrella was drawn to the bacterial world in microbiology lab courses while earning a biochemistry degree at Syracuse University in New York. After graduation, she obtained a research technician position at Albany Medical College, where she worked on projects centered around infectious bacteria and how they respond to their environments. She continued this thread of research in graduate school, moving on to a new study to discover how Streptococcus pneumoniae bacteria, which often cause ear infections and pneumonia, use a particular signaling molecule to resist antibiotic treatments and evade vaccines.

Research Helps Guide Families Safely Through Pandemic

IRP’s Diana Bianchi Honored for Leading Pediatric COVID Response

Dr. Diana Bianchi

When the first reports of COVID-19 came out, infectious disease experts and healthcare providers thought children might be spared its most dire effects. After all, the news reports and health statistics showed that nearly all serious cases occurred in the elderly, people with certain pre-existing conditions, and those who spent their days and nights caring for COVID patients. However, as case counts rose and disruptions in daily life grew, the medical and psychological effects of COVID on children became apparent — and the impact was alarming. It soon became clear that something had to be done to understand the disease's effects on infants, children and teens, as well as pregnant women and traditionally underserved communities.

It was, appropriately, Mother’s Day when then-NIH Director Francis Collins sought help from Diana W. Bianchi, M.D., Director of the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) and a senior investigator in the National Human Genome Research Institute (NHGRI). An expert in infant health and genetic conditions like Down syndrome, Dr. Bianchi was just the person to initiate large-scale studies across the country to assess the severity of COVID in specific populations, the safety and efficacy of vaccination and treatment, and the impact of mitigation efforts such as masking. For this critical leadership, Dr. Bianchi was named a finalist for the 2022 Samuel J. Heyman Service to America Medal for COVID-19 Response.

Understanding the Foundations of Immune Defenses

IRP’s Mary Carrington Elected to the American Academy of Arts and Sciences for Insights Into Immune System Variations

Dr. Mary Carrington

Some people never seem to get sick, while others catch a new bug of some sort every other week. Humans are immensely variable both in their capacity to shrug off illness and in the ways their bodies respond to medical treatments. IRP senior investigator Mary Carrington, Ph.D., has spent her entire career exploring the biological roots of these differences, and the discoveries she has made earned her election to the American Academy of Arts and Sciences earlier this year.

Leading the Charge Against Infectious Disease

Government Awards Recognize H. Clifford Lane’s Four Decades of Research Achievements

Dr. H. Clifford Lane

The remarkable career of H. Clifford Lane, M.D., might have gone very differently if a NIH scientist hadn’t accidentally eavesdropped on Dr. Lane’s conversation with a colleague in 1979. After hearing Dr. Lane mention that he had missed the deadline to apply for a position at NIH, the NIH researcher made some calls and discovered a spot there had just opened up — one that was perfect for Dr. Lane, who would spend the ensuing decades conducting life-saving research to understand and combat some of the world’s most dangerous infectious diseases.

Now the Clinical Director at the National Institute for Allergy and Infectious Disease (NIAID), Dr. Lane has been named a finalist for the 2022 Samuel J. Heyman Service to America Medals’ Career Achievement Award in recognition of his crucial contributions to the fight against HIV/AIDS, Ebola, COVID-19, and other illnesses. Also known as the “Sammies,” the awards recognize federal employees who are “breaking down barriers, overcoming huge challenges, and getting results.”

Postdoc Profile: From Bench to Bedside and Back Again

Dr. Stefan Barisic Turns Laboratory Discoveries into Kidney Cancer Treatments

Dr. Stefan Barisic

The Laboratory of Transplantation Immunotherapy sits at the heart of the NIH Clinical Center, just down the hallway from the Southeast inpatient unit. Here, IRP postdoctoral research fellow Stefan Barisic, M.D., labors at the bench with the goal of creating practical treatments for kidney cancer patients. Having such proximity to his patients was one of the chief attractions of working at NIH for Dr. Barisic.

“The NIH Clinical Center is an amazing place because it has all the resources you need to go from the bench to the bedside and back to the bench all in one building,” says Dr. Barisic.