CRISPR screens for lipid regulators reveal a role for ER-bound SNX13 in lysosomal cholesterol export.
CRISPR screens for lipid regulators reveal a role for ER-bound SNX13 in lysosomal cholesterol export.
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DOI:
10.1083/jcb.202105060
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发表时间:
2022-02-07
期刊:
影响因子:
--
通讯作者:
Pfeffer SR
中科院分区:
文献类型:
--
作者:
Lu A;Hsieh F;Sharma BR;Vaughn SR;Enrich C;Pfeffer SR
Genome-wide CRISPR screens carried out with and without NPC1 function identify shared pathways that coordinately control lysosomal cholesterol and bis(monoacylglycero)phosphate. ER-localized SNX13 protein plays an unexpected regulatory role in modifying NPC1 function and forming membrane contacts to regulate cellular cholesterol localization. We report here two genome-wide CRISPR screens performed to identify genes that, when knocked out, alter levels of lysosomal cholesterol or bis(monoacylglycero)phosphate. In addition, these screens were also performed under conditions of NPC1 inhibition to identify modifiers of NPC1 function in lysosomal cholesterol export. The screens confirm tight coregulation of cholesterol and bis(monoacylglycero)phosphate in cells and reveal an unexpected role for the ER-localized SNX13 protein as a negative regulator of lysosomal cholesterol export and contributor to ER–lysosome membrane contact sites. In the absence of NPC1 function, SNX13 knockdown redistributes lysosomal cholesterol and is accompanied by triacylglycerol-rich lipid droplet accumulation and increased lysosomal bis(monoacylglycero)phosphate. These experiments provide unexpected insight into the regulation of lysosomal lipids and modification of these processes by novel gene products.
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影响因子:
12.3
作者:
Carpenter AE;Jones TR;Lamprecht MR;Clarke C;Kang IH;Friman O;Guertin DA;Chang JH;Lindquist RA;Moffat J;Golland P;Sabatini DM
通讯作者:
Sabatini DM
DOI:
10.1083/jcb.201709034
发表时间:
2017-10-02
期刊:
The Journal of cell biology
影响因子:
--
作者:
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通讯作者:
Winckler B
影响因子:
4.8
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通讯作者:
Storch, Judith
影响因子:
11.8
作者:
Cerikan, Berati;Shaheen, Ranad;Schiebel, Elmar
通讯作者:
Schiebel, Elmar
影响因子:
3.5
作者:
Bryant, Dale;Liu, Yang;Stanier, Philip
通讯作者:
Stanier, Philip