1. Academic Validation
  2. Peglated-H1/pHGFK1 nanoparticles enhance anti-tumor effects of sorafenib by inhibition of drug-induced autophagy and stemness in renal cell carcinoma

Peglated-H1/pHGFK1 nanoparticles enhance anti-tumor effects of sorafenib by inhibition of drug-induced autophagy and stemness in renal cell carcinoma

  • J Exp Clin Cancer Res. 2019 Aug 19;38(1):362. doi: 10.1186/s13046-019-1348-z.
Xiaoge Gao 1 2 Pin Jiang 1 2 Qian Zhang 1 2 Qian Liu 1 Shuangshuang Jiang 1 Ling Liu 1 Maomao Guo 1 2 Qian Cheng 1 2 Junnian Zheng 3 4 Hong Yao 5 6
Affiliations

Affiliations

  • 1 Cancer Institute, Xuzhou Medical University, Xuzhou, Jiangsu Province, 221002, People's Republic of China.
  • 2 Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu Province, 221002, People's Republic of China.
  • 3 Cancer Institute, Xuzhou Medical University, Xuzhou, Jiangsu Province, 221002, People's Republic of China. jnzheng@xzhmu.edu.cn.
  • 4 Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu Province, 221002, People's Republic of China. jnzheng@xzhmu.edu.cn.
  • 5 Cancer Institute, Xuzhou Medical University, Xuzhou, Jiangsu Province, 221002, People's Republic of China. yaohong20055@hotmail.com.
  • 6 Department of Cancer Biotherapy Center, Third Affiliated Hospital of Kunming Medical University, Kunming, Yunnan Province, 650118, People's Republic of China. yaohong20055@hotmail.com.
Abstract

Background: Tumor targeting small molecular inhibitors are the most popular treatments for many malignant diseases, including Cancer. However, the lower clinical response and drug resistance still limit their clinical efficacies. HGFK1, the first kringle domain of hepatocyte growth factor, has been defined as a potent anti-angiogenic factor. Here, we aimed to develop and identify novel nanoparticles-PH1/pHGFK1 as potential therapeutic agents for the treatment of renal cell carcinoma (RCC).

Methods: We produced a novel cationic polymer-PH1 and investigated the anti-tumor activity of PH1/pHGFK1 nanoparticle alone and its combination therapy with sorafenib in RCC cell line xenografted mice model. Then, we figured out its molecular mechanisms in human RCC cell lines in vitro.

Results: We firstly demonstrated that intravenous injection of PH1/pHGFK1 nanoparticles significantly inhibited tumor growth and prolonged the survival time of tumor-bearing mice, as well as synergistically enhanced anti-tumor activities of sorafenib. Furthermore, we elucidated that recombinant HGFK1 improved sorafenib-induced cell Apoptosis and arrested cell cycle. In addition, HGFK1 could also decrease sorafenib-induced Autophagy and stemness via blockading NF-κB signaling pathway in RCC both in vitro and in vivo.

Conclusions: HGFK1 could inhibit tumor growth, synergistically enhance anti-tumor activities of sorafenib and reverse its drug resistance evolution in RCC. Our results provide rational basis for clinical application of sorafenib and HGFK1 combination therapy in RCC patients.

Keywords

Autophagy; Cancer stem cell; HGFK1; Renal cell carcinoma; Sorafenib.

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