Seipin: harvesting fat and keeping adipocytes healthy.
Seipin: harvesting fat and keeping adipocytes healthy.
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DOI:
10.1016/j.tcb.2021.06.003
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发表时间:
2021-11
影响因子:
19
通讯作者:
Goodman JM
中科院分区:
文献类型:
--
作者:
Rao MJ;Goodman JM
Seipin is a key protein in assembly of cytoplasmic lipid droplets (LDs) and their maintenance at ER junctions; the absence of seipin results in generalized lipodystrophy. How seipin mediates LD dynamics and prevents lipodystrophy are not well understood. New evidence suggests that seipin attracts triglyceride monomers from the ER to sites of droplet formation. In contrast, seipin may not be directly involved in assembly of nuclear LDs and may actually suppress their formation at a distance. Seipin promotes adipogenesis, but lipodystrophy may involve post-adipogenic effects. We hypothesize that among these are a cycle of runaway lipolysis and lipotoxicity caused by aberrant lipid droplets, resulting in a depletion of fat stores and a failure of adipose and other cells to thrive.
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