Abstract:
:To investigate whether Annexin 1 can protect a retinal ganglion cells line (RGC-5) from apoptosis as induced by serum deprivation. Annexin 1 location in RGC-5 cells was determined using an indirect immunofluorescent assay. Expression of Annexin 1 in RGC-5 cultures deprived of serum for 0, 2 days was semi-quantified by western blot and RT-PCR. Effects of varying concentrations of the Annexin 1 peptide fragment, Ac2-26, on the survival of the RGC-5 cells was determined, and apoptotic cells were quantified by flow cytometry. Immunoblot and RT-PCR analysis was preformed to identify caspase 3, bax and bcl-2 in RGC extracts. Annexin 1 was localized in the cytoplasm of RGC-5 cells and the expression of Annexin 1, caspase 3 and bax was upregulated in serum-deprived RGC-5 cells. Ac2-26 attenuated the apoptosis resulting from serum deprivation of RGC-5 in a concentration-dependent manner, decreased caspase 3 and bax levels and produced an increase of bcl-2 in cell lysates. Annexin 1, in specific the peptide fragment Ac2-26, may play an important role in decreasing apoptosis in serum-deprived RGC-5 cells.
journal_name
Mol Biol Repjournal_title
Molecular biology reportsauthors
Sun J,Shao Z,Yang Y,Wu D,Zhou X,Yuan Hdoi
10.1007/s11033-011-1358-1subject
Has Abstractpub_date
2012-05-01 00:00:00pages
5543-51issue
5eissn
0301-4851issn
1573-4978journal_volume
39pub_type
杂志文章abstract::Recent reports on various cancer models demonstrate a great potential of cytosine deaminase/5-fluorocytosine suicide system in cancer therapy. However, this approach has limited success and its application to patients has not reached the desirable clinical significance. Accordingly, the improvement of this suicide sys...
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