Abstract:
:Tumor suppressor p53 plays important roles in cell cycle regulation, apoptosis and DNA repair in different cell types including lung cancer. There are different p53 apoptotic pathways in high and low metastatic ability lung cancer cells. However, the exactly mechanism in the pathway is still unclear. Here we found that Annexin A2, a Ca2+ -dependent phospholipid-binding protein, is involved in p53-mediated apoptosis. First, by using mRNA differential display technique, down-regulated Annexin A2 expression was found in all cell lines transfected of Ad-p53 (adenoviral expression construct encoding wild type p53 gene) especially in highly metastatic Anip973 lung cancer cells. Then, decreased expression of Annexin A2 was further confirmed by Northern blot and Western blot analysis. At last, knock down of Annexin A2 by siRNA inhibited cellular proliferation in BE1 cell line with highly metastatic ability. Taken together, our results suggested that Annexin A2 may play roles in p53 induced apoptosis and it is also involved in regulation of cell proliferation.
journal_name
Mol Cell Biochemjournal_title
Molecular and cellular biochemistryauthors
Huang Y,Jin Y,Yan CH,Yu Y,Bai J,Chen F,Zhao YZ,Fu SBdoi
10.1007/s11010-007-9649-5subject
Has Abstractpub_date
2008-02-01 00:00:00pages
117-23issue
1-2eissn
0300-8177issn
1573-4919journal_volume
309pub_type
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