Abstract
Epidemiological and clinical studies have indicated that low vitamin D activity is not only associated with an increased cancer risk and a more aggressive tumor growth, but also connected with an aggravated liver damage caused by chronic inflammation. Meanwhile, increasing evidence has demonstrated that 1,25(OH)2D3 (the most biologically active metabolite of vitamin D) can inhibit inflammatory response in some chronic inflammatory associated cancer, which is considered to have the anti-tumor potency. However, the interaction between 1,25(OH)2D3 and inflammation during hepatocellular carcinoma (HCC) initiation and progression is not yet clear. Here, we report an anti-tumorigenesis effect of 1,25(OH)2D3 via decreasing inflammatory cytokine secretion in HCC and hypothesize the possible underlying mechanism. Firstly, we show that the enhanced tumor growth is associated with elevated inflammatory cytokine IL-6 and TNF-α in 1α(OH)ase gene-knockout mice. Secondly, 1,25(OH)2D3 can inhibit vitamin D receptor (VDR) shRNA interfered tumor cell growth through decreasing inflammatory cytokine secretion in vitro and in vivo. Finally, using p27kip1 gene knock-out mouse model, we demonstrate that the effect of 1,25(OH)2D3 in inhibiting immune cell related inflammatory cytokine secretion, exerts in a p27kip1 gene dependent way. Collectively, 1,25(OH)2D3 inhibits HCC development through up-regulating the expression of p27kip1 in immune cell and reducing inflammatory cytokine production.
Keywords: HCC, chronic inflammation, 1, 25(OH)2D3, 1α(OH)ase, gene knockout, IL-6, TNF-α, STAT3 signaling , p27kip1, coculture.
Current Medicinal Chemistry
Title:1, 25(OH)2D3 Inhibits Hepatocellular Carcinoma Development Through Reducing Secretion of Inflammatory Cytokines from Immunocytes
Volume: 20 Issue: 33
Author(s): Jian Guo, Zhenhua Ma, Qingyong Ma, Zheng Wu, Ping Fan, Xiaojie Zhou, Lulu Chen, Shuang Zhou, David Goltzman, Dengshun Miao and Erxi Wu
Affiliation:
Keywords: HCC, chronic inflammation, 1, 25(OH)2D3, 1α(OH)ase, gene knockout, IL-6, TNF-α, STAT3 signaling , p27kip1, coculture.
Abstract: Epidemiological and clinical studies have indicated that low vitamin D activity is not only associated with an increased cancer risk and a more aggressive tumor growth, but also connected with an aggravated liver damage caused by chronic inflammation. Meanwhile, increasing evidence has demonstrated that 1,25(OH)2D3 (the most biologically active metabolite of vitamin D) can inhibit inflammatory response in some chronic inflammatory associated cancer, which is considered to have the anti-tumor potency. However, the interaction between 1,25(OH)2D3 and inflammation during hepatocellular carcinoma (HCC) initiation and progression is not yet clear. Here, we report an anti-tumorigenesis effect of 1,25(OH)2D3 via decreasing inflammatory cytokine secretion in HCC and hypothesize the possible underlying mechanism. Firstly, we show that the enhanced tumor growth is associated with elevated inflammatory cytokine IL-6 and TNF-α in 1α(OH)ase gene-knockout mice. Secondly, 1,25(OH)2D3 can inhibit vitamin D receptor (VDR) shRNA interfered tumor cell growth through decreasing inflammatory cytokine secretion in vitro and in vivo. Finally, using p27kip1 gene knock-out mouse model, we demonstrate that the effect of 1,25(OH)2D3 in inhibiting immune cell related inflammatory cytokine secretion, exerts in a p27kip1 gene dependent way. Collectively, 1,25(OH)2D3 inhibits HCC development through up-regulating the expression of p27kip1 in immune cell and reducing inflammatory cytokine production.
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Cite this article as:
Guo Jian, Ma Zhenhua, Ma Qingyong, Wu Zheng, Fan Ping, Zhou Xiaojie, Chen Lulu, Zhou Shuang, Goltzman David, Miao Dengshun and Wu Erxi, 1, 25(OH)2D3 Inhibits Hepatocellular Carcinoma Development Through Reducing Secretion of Inflammatory Cytokines from Immunocytes, Current Medicinal Chemistry 2013; 20 (33) . https://dx.doi.org/10.2174/09298673113209990248
DOI https://dx.doi.org/10.2174/09298673113209990248 |
Print ISSN 0929-8673 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-533X |
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