Immunosenescence, a concept proposed by Roy Walford in the 1960s, refers to the progressive remodeling and decline of immune function with aging. It is characterized by a diminished ability to respond ...

The only route for S1P formation is via the phosphorylation of sphingosine at its C1 hydroxyl group by the sphingosine kinases. Two sphingosine kinases exist, SPHK1 and SPHK2. These are intracellular ...

Cell signaling is crucial for cells to communicate and function correctly. Disruptions in these pathways, caused by genetic mutations or environmental factors, can lead to uncontrolled cell growth, ...

T cell activation—the process by which these key immune defenders recognize threats and mobilize against them—depends on exquisitely timed molecular signals. Now researchers have captured one of the ...