Abstract
Autophagy is an evolutionary conserved process by which cells recycle intracellular materials to maintain homeostasis in different cellular contexts. Under basal conditions it prevents accumulation of damaged proteins and organelles; during starvation, autophagy provides cells with sufficient nutrients to survive. Sphingolipids are a family of bioactive molecules modulating vital cellular functions such as apoptosis, cell cycle arrest or proliferation. Besides these functions, some sphingolipids like ceramide, sphingosine- 1-phosphate or gangliosides have been described to promote autophagy in several cancer cell lines. Current evidence supports the notion that induction of autophagic cell death can halt tumorigenesis. Of interest, some chemotherapeutic agents used for the treatment of hematological malignancies trigger the production of endogenous sphingolipids with pro-autophagic effects. In this review we describe the regulation and functions of the sphingolipid-induced autophagy and the tight relationship with the cancer cell response to current chemotherapeutic regimens.
Keywords: Sphingolipid, autophagy, ceramide, sphingosine-1-phosphate, cancer, hematological malignancies, UPS, ATG, PKB, JNK, Gangliosides, Mtor
Anti-Cancer Agents in Medicinal Chemistry
Title: Regulation of Autophagy by Sphingolipids
Volume: 11 Issue: 9
Author(s): Carmen Bedia, Thierry Levade and Patrice Codogno
Affiliation:
Keywords: Sphingolipid, autophagy, ceramide, sphingosine-1-phosphate, cancer, hematological malignancies, UPS, ATG, PKB, JNK, Gangliosides, Mtor
Abstract: Autophagy is an evolutionary conserved process by which cells recycle intracellular materials to maintain homeostasis in different cellular contexts. Under basal conditions it prevents accumulation of damaged proteins and organelles; during starvation, autophagy provides cells with sufficient nutrients to survive. Sphingolipids are a family of bioactive molecules modulating vital cellular functions such as apoptosis, cell cycle arrest or proliferation. Besides these functions, some sphingolipids like ceramide, sphingosine- 1-phosphate or gangliosides have been described to promote autophagy in several cancer cell lines. Current evidence supports the notion that induction of autophagic cell death can halt tumorigenesis. Of interest, some chemotherapeutic agents used for the treatment of hematological malignancies trigger the production of endogenous sphingolipids with pro-autophagic effects. In this review we describe the regulation and functions of the sphingolipid-induced autophagy and the tight relationship with the cancer cell response to current chemotherapeutic regimens.
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Cite this article as:
Bedia Carmen, Levade Thierry and Codogno Patrice, Regulation of Autophagy by Sphingolipids, Anti-Cancer Agents in Medicinal Chemistry 2011; 11 (9) . https://dx.doi.org/10.2174/187152011797655131
DOI https://dx.doi.org/10.2174/187152011797655131 |
Print ISSN 1871-5206 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5992 |
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