Acute perturbations in Golgi organization impact de novo sphingomyelin synthesis.
Acute perturbations in Golgi organization impact de novo sphingomyelin synthesis.
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DOI:
10.1111/j.1600-0854.2008.00810.x
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发表时间:
2008-11
期刊:
影响因子:
--
通讯作者:
Machamer CE
中科院分区:
文献类型:
--
作者:
Chandran S;Machamer CE
The mammalian Golgi apparatus is composed of multiple stacks of cisternal membranes organized laterally into a ribbon-like structure, with close apposition of trans Golgi regions with specialized endoplasmic reticulum (ER) membranes. These contacts may be the site of ceramide transfer from its site of synthesis (ER) to sphingomyelin (SM) synthase via ceramide transfer protein (CERT). CERT extracts ceramide from the ER and transfers it to Golgi membranes, but the role of overall Golgi structure in this process is unknown. We show here that localization of CERT in puncta around the Golgi complex requires both ER and Golgi binding domains of CERT. To examine how Golgi structure contributes to SM synthesis, we treated cells with Golgi perturbing drugs and measured newly synthesized SM. Interestingly, disruption of Golgi morphology with nocodazole, but not ilimaquinone inhibited SM synthesis. Decreased localization of CERT with a Golgi marker correlated with decreased SM synthesis. We propose that some Golgi structural perturbations interfere with efficient ceramide trafficking via CERT, and thus SM synthesis. The organization of the mammalian Golgi ribbon together with CERT may promote specific ER-Golgi interactions for efficient delivery of ceramide for SM synthesis.
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影响因子:
4.8
作者:
Kumagai, Keigo;Kawano, Miyuki;Hanada, Kentaro
通讯作者:
Hanada, Kentaro
DOI:
10.1083/jcb.200704091
发表时间:
2007-10-08
期刊:
The Journal of cell biology
影响因子:
--
作者:
Halter D;Neumann S;van Dijk SM;Wolthoorn J;de Mazière AM;Vieira OV;Mattjus P;Klumperman J;van Meer G;Sprong H
通讯作者:
Sprong H
DOI:
10.1083/jcb.200612017
发表时间:
2007-07-02
期刊:
The Journal of cell biology
影响因子:
--
作者:
Fugmann T;Hausser A;Schöffler P;Schmid S;Pfizenmaier K;Olayioye MA
通讯作者:
Olayioye MA
影响因子:
4.1
作者:
KALLEN, KJ;QUINN, P;ALLAN, D
通讯作者:
ALLAN, D
影响因子:
19
作者:
Farquhar, MG;Palade, GE
通讯作者:
Palade, GE