Heat-shock protein 27 is phosphorylated in gemcitabine-resistant pancreatic cancer cells.

Abstract:

BACKGROUND:Gemcitabine (2'-deoxy-2'-difluorodeoxycytidine: Gemzar) (GEM) appears to be the only effective anticancer drug for pancreatic cancer, but it has little impact on outcome due to a high level of inherent and acquired tumor resistance. Our previous proteomic study demonstrated that the expression of three spots of heat-shock protein 27 (HSP27) was increased in GEM-resistant pancreatic cancer cells and could play a role in determining the sensitivity of pancreatic cancer to GEM. MATERIALS AND METHODS AND RESULTS:In the present study, using one-dimensional and two-dimensional Western blotting, we elucidated that these three spots of HSP27 were phosphorylated in GEM-resistant pancreatic cancer cell line, KLM1-R. CONCLUSION:Phosphorylated HSP27 may play an important role in the resistance to GEM, and it could also be a possible biomarker for predicting the response of pancreatic cancer patients to treatment with GEM.

journal_name

Anticancer Res

journal_title

Anticancer research

authors

Taba K,Kuramitsu Y,Ryozawa S,Yoshida K,Tanaka T,Maehara S,Maehara Y,Sakaida I,Nakamura K

subject

Has Abstract

pub_date

2010-07-01 00:00:00

pages

2539-43

issue

7

eissn

0250-7005

issn

1791-7530

pii

30/7/2539

journal_volume

30

pub_type

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