Differential Regulation of Specific Sphingolipids in Colon Cancer Cells during Staurosporine-Induced Apoptosis

被引：49

作者：

del Solar, Virginia ^{[1
]}

Lizardo, Darleny Y. ^{[1
]}

Li, Nasi ^{[1
]}

Hurst, Jerod J. ^{[1
]}

Brais, Christopher J. ^{[1
]}

Atilla-Gokcumen, G. Ekin ^{[1
]}

机构：

[1] SUNY Buffalo, Dept Chem, Buffalo, NY 14260 USA

来源：

CHEMISTRY & BIOLOGY | 2015年 / 22卷 / 12期

关键词：

CERAMIDE SYNTHASES; LIPIDS; GENERATION; DOXORUBICIN; METABOLISM; BIOMARKERS; PHENOTYPE; MECHANISM; ROLES;

D O I：

10.1016/j.chembiol.2015.11.004

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Apoptosis is accompanied by distinct morphological changes at the plasma and organelle membrane level. Involvement of certain lipids in apoptosis has been established; however, we have limited understanding of the specific lipid structures that participate in this process. We used untargeted comparative lipidomics to study the changes in lipid composition during staurosporine-induced apoptosis in HCT-116. Our results revealed that ceramides, dihydroceramides, and sphingomyelins, with defined acyl chains, constitute the majority of changes in the lipidome. Expression levels and activities of enzymes responsible for the biosynthesis of lipids that change suggest that de novo synthesis causes these specific changes. Further analysis of the lipidome during apoptosis in other cancer and non-cancer cell lines suggested that accumulation of ceramides and dihydroceramides is specific to cancer cells. Taken together, our data propose that these molecules are regulated at the lipid-specific level during apoptosis and that this regulation differs between cancer and non-cancer cells.

引用

页码：1662 / 1670

页数：9

共 58 条

[51] Regulation of ceramide generation during macrophage apoptosis by ASMase and de novo synthesis [J].