These processes exert inhibitory or tumor-promoting effects on the activation, proliferation, differentiation and function of immune cells, forming a critical bridge linking tumor cell intrinsic metabolism and tumor immunity ( de novo serine synthesis pathway modulates the tumor immune microenvironment through metabolic reprogramming ( The balance between tumorigenesis and antitumor immune function governed by serine metabolism is determined by the abundance and activation status of distinct cell populations, as well as the expression profiles of various immune mediators and regulatory factors within the tumor microenvironment (TME) ( Bladder cancer cells with PSAT1 overexpression can secrete serine, which activates the PI3K/Akt pathway in macrophages and induces their polarization toward the M2 phenotype, thereby suppressing antitumor immune responses ( de novo serine synthesis promotes the production of -ketoglutarate, which activates the mTORC1 signaling pathway in macrophages, facilitates the acquisition of the M2 macrophage phenotype and sustains high PD-L1 expression, ultimately inhibiting the cytotoxic function of CD8 + T cells
Amanda Lightbody, founder of The Rainbow Crosswalk, a nonprofit Pride organization in New Brunswick, Canada, remembers using food as a child to calm herself down during moments of anxiety or uncertainty
Abstract Carnitine is mainly biosynthesized in the liver and kidneys, and free carnitine is reabsorbed by renal tubules, so that carnitine deficiency and insufficiency frequently occur in end-stage renal failure patients
Csords G, Weaver D, Hajnczky G
Sorour NE, Abd El-Kareem HM, Ibrahim AE, Salem RM
