NDLI: Low expression of PIDD is associated with cell proliferation and apoptosis in hepatocellular carcinoma

Content Provider	Springer Nature Link
Author	Shi, Weidong Huang, Wei Chen, Yuyan Zhang, Shusen Xu, Pan Gu, Xiaoling Fan, Hui Xu, Jian Chen, Yongmei Ni, Runzhou Lu, Cuihua Zhang, Xiubing
Copyright Year	2016
Abstract	p53-induced death domain protein (PIDD) facilitates p53-dependent apoptosis through the interaction with components of the death receptor signaling pathways. However, the role of PIDD in hepatocellular carcinoma (HCC) development remains unknown. In this study, we investigated the expression pattern of PIDD in clinical HCC samples and adjacent non-cancerous tissues using immunohistochemistrical and Western blot analyses. The results showed that PIDD was lowly expressed in HCC tissues and HCC cell lines, compared with the adjacent non-tumorous tissues and LO2 normal hepatocytes. In addition, clinicopathological analysis showed that the expression of PIDD was closely related with multiple clinicopathological variables, such as American Joint Committee on Cancer (AJCC) stage, AFP, and poor prognosis of HCC. Univariate and multivariate survival analyses demonstrated that PIDD could serve as an independent prognostic factor to predict the survival of HCC patients. We used serum starvation-refeeding experiment to explore the involvement of PIDD in HCC cell cycle regulation. We found that PIDD was accumulated in growth-arrested HCC cells and was progressively decreased when cells entered into S phase. Moreover, flow cytometry and cell counting kit-8 (CCK-8) assays indicated that depleting the expression of PIDD could facilitate cell cycle progression and accelerate cell proliferation in HepG2 cells, while overexpression of PIDD could result in cell cycle arrest at G1 phase and hinder the cell proliferation in Hep3B cells. Finally, flow cytometry revealed that overexpression of PIDD slightly increased the apoptosis of HCC cells. Taken together, we concluded that PIDD may be a valuable prognostic marker and promising therapeutic target of HCC.
Starting Page	10447
Ending Page	10457
Page Count	11
File Format	PDF
ISSN	10104283
Journal	Tumor Biology
Volume Number	37
Issue Number	8
e-ISSN	14230380
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-02-05
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Hepatocellular carcinoma PIDD Proliferation Apoptosis Cancer Research
Content Type	Text
Resource Type	Article
Subject	Medicine Cancer Research

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