Vanadium-induced apoptosis of HaCaT cells is mediated by c-fos and involves nuclear accumulation of clusterin
Φόρτωση...
Ημερομηνία
Συγγραφείς
Markopoulou, S.
Kontargiris, E.
Batsi, C.
Tzavaras, T.
Trougakos, I.
Boothman, D. A.
Gonos, E. S.
Kolettas, E.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer-reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
FEBS J
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
Vanadium exerts a variety of biological effects, including antiproliferative responses through activation of the respective signaling pathways and the generation of reactive oxygen species. As epidermal cells are exposed to environmental insults, human keratinocytes (HaCaT) were used to investigate the mechanism of the antiproliferative effects of vanadyl(IV) sulfate (VOSO(4)). Treatment of HaCaT cells with VOSO(4) inhibited proliferation and induced apoptosis in a dose-dependent manner. Inhibition of proliferation was associated with downregulation of cyclins D1 and E, E2F1, and the cyclin-dependent kinase inhibitors p21(Cip1/Waf1) and p27(Kip1). Induction of apoptosis correlated with upregulation of the c-fos oncoprotein, changes in the expression of clusterin (CLU), an altered ratio of antiapoptotic to proapoptotic Bcl-2 protein family members, and poly(ADP-ribose) polymerase-1 cleavage. Forced overexpression of c-fos induced apoptosis in HaCaT cells that correlated with secretory CLU downregulation and upregulation of nuclear CLU (nCLU), a pro-death protein. Overexpression of Bcl-2 protected HaCaT cells from vanadium-induced apoptosis, whereas secretory CLU overexpression offered no cytoprotection. In contrast, nCLU sensitized HaCaT cells to apoptosis. Our data suggest that vanadium-mediated apoptosis was promoted by c-fos, leading to alterations in CLU isoform processing and induction of the pro-death nCLU protein.
Περιγραφή
Λέξεις-κλειδιά
Apoptosis/*drug effects, Cell Cycle Proteins/metabolism, Cell Line, Cell Nucleus/*drug effects/*metabolism, Cell Proliferation/drug effects, Clusterin/genetics/*metabolism, Humans, Proto-Oncogene Proteins c-bcl-2/genetics/metabolism, Proto-Oncogene Proteins c-fos/genetics/*metabolism, Up-Regulation/drug effects, Vanadium/*pharmacology
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
http://www.ncbi.nlm.nih.gov/pubmed/19531052
http://onlinelibrary.wiley.com/store/10.1111/j.1742-4658.2009.07093.x/asset/j.1742-4658.2009.07093.x.pdf?v=1&t=h0dhuokt&s=1c3e3dae0c3fee4b553b3617ec7b7b1eef2fd8e2
http://onlinelibrary.wiley.com/store/10.1111/j.1742-4658.2009.07093.x/asset/j.1742-4658.2009.07093.x.pdf?v=1&t=h0dhuokt&s=1c3e3dae0c3fee4b553b3617ec7b7b1eef2fd8e2
Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών Υγείας. Τμήμα Ιατρικής