Down-regulating HIF-1 by lentivirus-mediated shRNA for therapy of triple negative breast cancer

作者：Li, Shuang; Wei, Qingzhu; Li, Qin^*; Zhang, Bin; Xiao, Qiang

来源：Cancer Biology and Therapy, 2015, 16(6): 866-875.

DOI：10.1080/15384047.2015.1040958

• apoptosis
• gene therapy
• HIF-1
• recombinant lentivirus
• siRNA therapy
• stably transfected cell lines
• triple negative breast cancer

Hypoxia is associated with poor response to treatment in various cancers. Hypoxia inducible factor 1 (HIF-1) is a major transcription factor that mediates adaptation of cancer cells to a hypoxic environment and regulates many genes that are involved in key cellular functions, including cell immortalization, stem cell maintenance, autocrine growth/survival, angiogenesis, invasion/metastasis, and resistance to chemotherapy. HIF-1 has been considered as an attractive therapeutic target for cancer treatment, but there is limited success in this research field. In the present study, we designed a recombinant lentivirus containing HIF-1 siRNA, developed stably transfected cell lines, and tested the anticancer effects of the siRNA on cancer cells in vitro and in vivo. Our results indicated that the stable downregulation of HIF-1 reversed chemoresistance, inhibited proliferation, migration and invasion of cancer cells, and slowed down the tumor growth in breast cancer xenograft models. In conclusion, the recombinant lentivirus containing HIF-1 siRNA provides a new avenue for developing novel therapy for triple negative breast cancer.

• 出版日期2015-6
• 单位南方医科大学