Archive for cellular and molecular medicine
How does the placenta protect unborn babies from COVID-19?
Evidence has shown that pregnancy is a risk factor for severe illness in women with COVID-19. A recent CDC study reviewed case reports of approximately 400,000 women aged 15 to 44 with symptomatic COVID-19. Those who were pregnant had a roughly tripled likelihood of ICU admission and invasive ventilation and 70 percent higher mortality. Yet ... Read More about How does the placenta protect unborn babies from COVID-19?
Chromatin regulation enables generation of diverse antibodies
We need a variety of antibody types to help fight off invading foreign pathogens and our genome is exquisitely tuned to produce them to meet emerging needs. A new study finds that not just our DNA, but its configuration and packaging, help us generate diverse antibodies. Key takeaways Chromatin loop extrusion leads to creation of ... Read More about Chromatin regulation enables generation of diverse antibodies
Natural killer cells: Protect the placenta cell but kill the infection
Infections that reach the placenta can lead to spontaneous abortions, intrauterine growth restriction, congenital abnormalities, and premature births. New research from the laboratory of Judy Lieberman, MD, PhD, and colleagues at Harvard University shows that a group of cells near the site where the placenta attaches to the uterine wall plays an essential role in ... Read More about Natural killer cells: Protect the placenta cell but kill the infection
A master regulator of kidney health?
End-stage kidney disease often begins with injury to podocytes. These highly specialized cells are a critical part of the glomeruli, clusters of capillaries that serve as the filtration units in our kidneys’ tightly-packed nephrons. As their name suggests, podocytes extend tiny foot processes to intermingle with the capillaries and filter the blood, maintaining the proper ... Read More about A master regulator of kidney health?
Capturing SARS-CoV-2’s shape-shifting spike protein
The rod-like spike proteins on the surface of SARS CoV-2 are the tip of the spear of the COVID-19 pandemic. The spikes bind to human cells via the ACE2 receptor and then dramatically change shape. They jack-knife, folding in on themselves to fuse their own membrane with the membrane of our cells. And that opens ... Read More about Capturing SARS-CoV-2’s shape-shifting spike protein
Tracking an organism’s development, cell by cell
A new mouse model allows scientists to track every cell in the body — from the embryo stage until adulthood. The system is the first of its kind and should yield a greater understanding of development, aging, and disease. Scientists described it last week in the journal Cell. “The dream of many developmental biologists for ... Read More about Tracking an organism’s development, cell by cell
How the new coronavirus gets into respiratory tissue — and may exploit one of our defenses
What makes SARS-CoV-2, the virus behind COVID-19, such a threat? A new study, led by Jose Ordovas-Montanes, PhD, at Boston Children’s Hospital and Alex K. Shalek, PhD, at MIT, pinpoints the likely cell types the virus infects. Unexpectedly, it also shows that one of the body’s main defenses against viral infections may actually help the ... Read More about How the new coronavirus gets into respiratory tissue — and may exploit one of our defenses
A drug treatment for telomere diseases?
For years, Donna Martin carried a piece of scrap paper with the words “dyskeratosis congenita,” which she believed might explain her son Brad’s sudden, mysterious affliction. A routine blood test had revealed Brad’s bone marrow was failing, unable to keep up with his need for healthy blood cells. His condition, Donna knew, would worsen over ... Read More about A drug treatment for telomere diseases?
Gasdermin E: A new approach to cancer immunotherapy
Tumors have figured out various ways to prevent the immune system from attacking them. Medicine, for its part, has fought back with cancer immunotherapy. The major approach uses checkpoint inhibitors, drugs that help the immune system recognize cancer cells as foreign. Another method, CAR T-cell therapy, directly engineers peoples’ T cells to efficiently recognize cancer ... Read More about Gasdermin E: A new approach to cancer immunotherapy
Going into science: Women scientists at Boston Children’s offer advice to girls
In honor of the International Day of Women and Girls in Science (February 11), we invited women scientists at all stages of their careers at Boston Children’s Hospital to share their scientific agendas. Here is some of what they had to say. The scientists also offered their advice for girls interested in entering the field. ... Read More about Going into science: Women scientists at Boston Children’s offer advice to girls