IRP Discoveries

Startling Snapshots of Science

Vibrant Images Push Forward Environmental Health Research

cell junctions in tracheal epithelial cells from a TLR5 knockout mouse

Scientists and artists obviously don’t spend their days doing the same thing, but that doesn’t mean the former can’t sometimes inadvertently be the latter. Take for example the 14 IRP research fellows who submitted images to the most recent edition of the Fellows Scientific Image Competition at NIH’s National Institute of Environmental Health Sciences (NIEHS). The competition, held every few years, shows that biomedical science can not only save lives, but also look good doing it.

“We are excited to showcase the work of our trainees using visual media, which reminds us there is art in science and showcases the important research we’re all engaged in at NIEHS,” says NIEHS Scientific Director Darryl Zeldin, M.D., who initiated the competition.

Robot-Assisted Experiments Point to Treatments for Rare Cancer

Study Identifies Drugs That Exploit the Disease’s Weak Spots

drug-screening robots performing automated experiments

The best way to destroy a cancer cell is to target its weak points, but that’s obviously easier said than done, especially when you want to kill those diseased cells while sparing healthy ones. That’s where robots come in, allowing scientists to quickly evaluate the effects of thousands of drugs on cancer to see what works and what doesn’t. IRP researchers recently used that approach to identify potential treatments for a rare skin cancer, including a strategy that appears to be particularly good at hitting the disease where it’s most vulnerable.

Tracking the Neuronal Response to Head Injury

New IRP Study Identifies Vulnerable and Resilient Brain Cells

man being treated for a head injury

Even with our thick skulls to protect our fragile brains, a hard enough blow to the head will still send our neurons into a tizzy. However, not all neurons are affected in the same way by a ‘traumatic brain injury,’ or TBI for short. By developing a way to see which neurons turn on a distress signal after a mild TBI, IRP researchers recently identified differences between neurons that die afterwards and those that are shaken up by the injury but manage to recover over time.

Experimental Psoriasis Drug Comes With An ‘On-Off’ Switch

IRP Research Could Lead to Light-Activated Treatments for Numerous Diseases

light bulb

Many helpful contraptions we use every day would be problematic if we couldn’t turn them off when we didn't need them. After all, you wouldn’t want to leave your oven on when you’re out of town, and most people wouldn’t sleep well with their bedside lamp on all night. Many medical treatments would benefit from the same flexibility, but creating such treatments is no easy task. IRP researchers recently took a significant step forward in this area by creating an experimental treatment for an irritating skin condition that can be activated and inactivated using different colors of light.

Targeting Tuberculosis

IRP’s Clifton Barry Seeks Novel Therapies for an Ancient Foe

Mycobacterium tuberculosis bacteria

March 24 is World Tuberculosis Day, a day to remember that a preventable and curable disease still kills more than a million people each year. Despite every effort to eradicate it, the disease-causing bug, Mycobacterium tuberculosis, keeps coming back stronger and more ready for a fight. As varieties of the bacteria grow more and more resistant to treatment, an evolutionary war is raging between the bacterium and researchers like IRP senior investigator Clifton Barry, Ph.D., who has been seeking solutions for the past 33 years.

Working Out the Chemistry of Exercise Endurance

IRP’s Paul Hwang Discovers How Muscle Cells Gear Up for Training

joggers

As the weather warms up in March, which is National Athletic Training Month, many of us come out of hibernation and finally fulfill that new year’s resolution to start exercising. Deep down in our cells, our mitochondria, the tiny power stations that turn oxygen into energy, start getting a workout, too.

IRP senior investigator Paul Hwang, M.D., Ph.D., studies how mitochondria and cellular energy production affect human health and disease, with a particular focus on cardiovascular health and cancer. However, March’s many new fitness enthusiasts might be most interested in a recent finding from his laboratory that seems to explain how muscles build endurance as we train them through exercise. His team’s insights also explain why muscles revert back to couch potato mode so quickly when we stop regular exercise. 

A Fight With The Flu Could Help Control COVID-19

IRP Mouse Study Reveals Factors That Influence Pandemic Virus’ Replication in the Lungs

a person's lungs surrounded by virus particles

Tuberculosis, the flu, a staph infection, asthma — you’d think all these ailments could only be bad news for the lungs. However, if they don’t get out of control, they might actually turn out to have an unexpected benefit. A new IRP mouse study suggests that a recent bout with these illnesses might prime the lungs to keep a lid on a COVID-19 infection.

One of the most perplexing aspects of the COVID-19 pandemic was the huge variation in individual experiences with the disease. Despite the incredibly infectious nature of the virus that causes it, SARS-CoV-2, many people never got sick at all, or at least never showed symptoms. For those who showed symptoms, they ranged wildly, mild for some and life-threatening for others.

Unlocking the Genetic Mysteries of Rare Autoinflammatory Diseases

IRP Researcher Finds Explanations and Hope

child getting her cheek swabbed for DNA analysis

Rare Disease Day, celebrated on or near February 29 — the rarest day on the calendar — calls attention to the 300 million people in the world who have some sort of rare disease. For children born with one of those diseases, speedy diagnosis and treatment may be necessary to ward off long-term complications, but that’s much easier said than done. This is especially true for pediatric autoinflammatory diseases, in which the immune system attacks the child’s own body. IRP senior investigator Raphaela T. Goldbach-Mansky, M.D., M.H.S., has made it her mission to discover and define these diseases and the genes that cause them, and then find a way to provide treatment. 

A Step Towards Precision Medicine for Lupus

IRP Research Hints at Potential of Genomic Technologies to Predict Patient Outcomes

blood vial and diagram showing DNA methylation markers on DNA molecules

Our genes certainly have a huge influence over our risk for disease, but they don’t operate in a vacuum. Rather, they’re decorated with numerous molecular tags like a bejeweled bracelet, and these ‘epigenetic’ markers affect how genes behave. A recent IRP study revealed differences in certain epigenetic markers that may one day help doctors more effectively treat patients with the autoimmune disease known as lupus.

Helping the Heart Stand Up to Sepsis

NIH Researcher Explores Why Some Survive Infection-Induced Organ Damage

human body with heart highlighted surrounded by bacteria

“When you have eliminated the impossible, whatever remains, however improbable, must be the truth.” That line from Arthur Conan Doyle’s Sherlock Holmes can be applied to mysteries of all sorts, including the ones scientists toil away in their labs to solve. When it comes to solving the many mysteries of sepsis — a life-threatening immune over-reaction to an uncontrolled infection — the process of elimination is leading us closer to answers, thanks to researchers at the NIH Clinical Center.

Sepsis — also known as septic shock in its most severe form — occurs when the body’s immune system kicks into overdrive to fight a severe infection. Unfortunately, rather than just attacking the harmful invaders, the immune system releases chemicals that, when present in excess, cause intense, tissue-damaging inflammation and impair organ function. In recognition of Sepsis Survivors Week, we spoke with IRP Senior Investigator Charles Natanson, M.D., about two of the great mysteries of sepsis: how does sepsis cause organ failure in the first place, and why do some people survive it while so many others die?