Microglial cells (MGs) are resident immune cells in the brain, which play a key role in the acute response and chronic recovery to stroke. Investigators at the University of Texas Health Science Center Houston aimed to evaluate MG transcriptomic response to stroke in mouse brain.
Medulloblastomas (MBs) are the most common malignant brain tumors in pediatric patients. Among the different types of MBs, those driven by MYC amplification present the worst prognosis. In a recent study published in Nature Communications, scientists from Cincinnati Children's Hospital Medical Center and collaborators investigated the molecular and genetic events triggering MYC amplification and malignant transformation in MBs, which remained previously unclear.
Researchers led by Congcong He at Northwestern University have found that exercise caused contracting muscles to secrete a glycoprotein called fibronectin (FN1) that induced autophagy in the liver which, in turn, drove insulin sensitization. They reported their findings online in Cell Metabolism on Feb. 21, 2023. He is an assistant professor of cell and developmental biology at the Feinberg School of Medicine.
In the larger picture, the fight against HIV has been a triumph of modern medicine. A patient diagnosed with HIV in the 1980s had a remaining life expectancy of 1 to 2 years. In 2023, they can expect to live another half century. But so far, an HIV vaccine has remained elusive. In the newest phase III failure, Janssen Pharmaceutical Cos. of Johnson & Johnson closed down its Mosaico trial more than a year ahead of schedule, following a data and safety monitoring board’s (DSMB) report saying the study was not expected to hit its primary endpoint.
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