MIT Department of Biology

Ribosomes, the cellular machines that assemble proteins, are made from dozens of proteins and RNA molecules. Putting all of those pieces together is a complex puzzle — one that MIT Associate Professor Joey Davis PhD ’10 revels in trying to solve. Understanding how these structures form and later break down could help researchers learn more […] The post Biologist Joey Davis explores how cells buil…

Symptoms such as fatigue, loss of appetite, altered sleep, and social withdrawal are often treated as inconvenient side effects of infection. While some scientists have suggested that they may serve a protective function, it is widely assumed that they’re byproducts of being sick. Now, in a new perspective published in Trends in Immunology on April 30, Whitehead […] The post Q&A: Why feeling sick…

Brenda Schafer Kennedy SM ’93 knows that sometimes the best medicine comes with four legs and fur. Kennedy is the chief veterinary and research officer for Canine Companions, a California-based, nationwide organization that provides assistance dogs at no cost to children, veterans, and adults with disabilities. “The need is enormous: One in four people in […] The post Alumni Spotlight: Caring for…

Stem cells are the body’s ultimate shape-shifters, sustaining tissues by balancing two competing demands: maintaining their own population and generating specialized descendants. In many tissues, some early descendants can revert to a stem cell state through a process known as dedifferentiation. This ability can help replenish the stem cell pool when stem cells are lost. In […] The post How stem …

MIT Professor Michael T. Laub as well as 21 MIT alumni have been elected as fellows of the American Association for the Advancement of Science (AAAS). The 2025 class of AAAS Fellows includes 449 scientists, engineers, and innovators, spanning all 24 of AAAS disciplinary sections, who are recognized for their scientific achievements. Laub, the Salvador […] The post Professor Michael Laub named 202…

What if the Trojan horse had been pulled to pieces, revealing the ruse and fending off the invasion, just as it entered the gates of Troy? That’s an apt description of a newly characterized bacterial defense system that chops up foreign DNA. Bacteria and the viruses that infect them, bacteriophages — phages for short — […] The post Slice and dice appeared first on MIT Department of Biology .

Just as Darwin’s finches evolved in response to natural selection in order to endure, the cells that make up a cancerous tumor similarly counter selective pressures in order to survive, evolve, and spread. Tumors are, in fact, complex sets of cells with their own unique structure and ability to change.  Today, artificial Intelligence and machine […] The post 3 Questions with new faculty member Ma…

Some genetic mutations that are expected to completely stop a gene from working surprisingly cause only mild or even no symptoms. Researchers in previous studies have discovered one reason why: cells can ramp up the activity of other genes that perform similar functions to make up for the loss of an important gene’s function. A […] The post New insights into a hidden process that protects cells f…

MIT Professor Emeritus Richard O. Hynes PhD ’71, a cancer biologist whose discoveries reshaped modern understandings of how cells interact with each other and their environment, passed away on Jan. 6. He was 81. Hynes is best known for his discovery of integrins, a family of cell-surface receptors essential to cell–cell and cell–matrix adhesion. He […] The post Richard Hynes, a pioneer in the bio…

The way the brain develops can shape us throughout our lives, so neuroscientists are intensely curious about how it happens. A new study by researchers in The Picower Institute for Learning and Memory at MIT that focused on visual cortex development in mice, reveals that an important class of neurons follows a set of rules […] The post How a unique class of neurons may set the table for brain dev…

Crops increasingly need to thrive in a broader range of conditions, including drought, salinity, and heat. Traditional plant breeding can select for desirable traits, but is limited by the genetic variation that already exists in plants. In many crops, domestication and long-term selection have narrowed genetic diversity, constraining efforts to develop new varieties. To work […] The post New che…