PMID: 16628086Apr 22, 2006Paper

Effect of antisense hypoxia-inducible factor 1alpha on progression, metastasis, and chemosensitivity of pancreatic cancer

Pancreas
Qing ChangYanping Feng

Abstract

The aim of the study was to observe the effect of antisense hypoxia-inducible factor 1alpha (HIF-1alpha) on progression, metastasis, and chemosensitivity of pancreatic cancer. BxPc-3 cells transfected with antisense HIF-1alpha plasmid were exposed to 0.5% O2 for 4 hours. Expressions of HIF-1alpha, survivin, and beta1 integrin were detected by reverse transcriptase -polymerase chain reaction and Western blotting. Growth inhibition rates and apoptosis rates of BxPc-3 cells under different dosages of chemotherapy agents (5-fluorouracil, doxorubicin, and gemcitabine) were measured by MTT colorimetric assay and flow cytometry. The migration of BxPc-3 cells was assayed using transwell cell culture chambers. Subcutaneous transplantation of BxPc-3 cells in nude mice for 8 weeks was to assess progression and metastasis of pancreatic cancer. Expression of HIF-1alpha was obviously down-regulated, and at the same time, survivin and beta1-integrin expressions were markedly down-regulated in the experimental group (P < 0.05). Higher dosages (100, 200, and 400 mg/L of 5-fluorouracil; 0.05, 0.075, and 0.1 mg/L of doxorubicin; and 10(-9), 10(-8), and 10(-7) mol/L of gemcitabine) caused a greater increase of inhibition in the experimental group ...Continue Reading

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