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Phosphatidylserine (abbreviated Ptd-L-Ser or PS) is a phospholipid and is a component of the cell membrane. [1] It plays a key role in cell cycle signaling, specifically in relation to apoptosis . It is a key pathway for viruses to enter cells via apoptotic mimicry . [ 2 ]
Phosphatidylserine is the most abundant anionic phospholipid in the cell's plasma membrane, and is usually positioned internally. However, during apoptosis and several pathological conditions including tumorigenesis or infection by some types of viruses, phosphatidylserine is flipped from an internal to an external position. [ 4 ]
The protein encoded by this gene catalyzes the formation of phosphatidylserine from either phosphatidylcholine or phosphatidylethanolamine. Phosphatidylserine synthase localizes to the mitochondria-associated membrane of the endoplasmic reticulum, where it serves a structural role as well as a signaling role.
non-small cell lung cancer: Anatumomab mafenatox [17] Fab: mouse: Tumor-associated glycoprotein 72 (TAG-72) non-small cell lung cancer: Andecaliximab [18] mab: chimeric: gelatinase B: gastric cancer or gastroesophageal junction adenocarcinoma Anetumab ravtansine [4] mab: human: mesothelin (MSLN) cancer Anifrolumab [4] Saphnelo: mab: human: IFN ...
The phosphatidylserine decarboxylation pathway is the main source of synthesis for phosphatidylethanolamine in the membranes of the mitochondria. Phosphatidylethanolamine produced in the mitochondrial membrane is also transported throughout the cell to other membranes for use.
Goodpasture syndrome may quickly result in permanent lung and kidney damage, often leading to death. It is treated with medications that suppress the immune system such as corticosteroids and cyclophosphamide, and with plasmapheresis, in which the antibodies are removed from the blood. Due to the GPS's rapid progression, the significant ...
Prostate cancer is the development of cancer in the prostate, a gland in the male reproductive system. [27] Most prostate cancers are slow growing; however, some grow relatively quickly. [28] [29] The cancer cells may spread from the prostate to other areas of the body, particularly the bones and lymph nodes. [30] It may initially cause no ...
Dying cells that undergo the final stages of apoptosis display phagocytotic molecules, such as phosphatidylserine, on their cell surface. [70] Phosphatidylserine is normally found on the inner leaflet surface of the plasma membrane, but is redistributed during apoptosis to the extracellular surface by a protein known as scramblase . [ 71 ]