Clusterin and DNA repair: a new function in cancer for a key player in apoptosis and cell cycle control.
The glycoprotein clusterin (CLU), has two known isoforms generated in human cells. A nuclear form of CLU protein (nCLU) is pro-apoptotic, while a secretory form (sCLU) is pro-survival. Both forms are implicated in various cell functions, including DNA repair, cell cycle regulation, and apoptotic cell death. CLU expression has been associated with tumorigenesis and the progression of various malignancies. In response to DNA damage, cell survival can be enhanced by activation of DNA repair mechanisms, while simultaneously stimulating energy-expensive cell cycle checkpoints that delay the cell cycle progression to allow more time for DNA repair. This review summarizes our current understanding of the role of clusterin in DNA repair, apoptosis, and cell cycle control and the relevance.
Shannan
B
B
Department of Dermatology, The Saarland University Hospital, Building 18, Homburg/Saar 66421, Germany.
Seifert
M
M
Boothman
D A
DA
Tilgen
W
W
Reichrath
J
J
D017209:Apoptosis; D002453:Cell Cycle; D051152:Clusterin / Q000235:genetics / Q000502:physiology*; D053903:DNA Breaks, Double-Stranded; D004260:DNA Repair; D006801:Humans; D008957:Models, Genetic; D009369:Neoplasms / Q000209:etiology* / Q000235:genetics* / Q000378:metabolism; D020033:Protein Isoforms / Q000502:physiology
D051152:Clusterin; D020033:Protein Isoforms