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| 標題: | Protein disulfide isomerase a4 acts as a novel regulator of cancer growth through the procaspase pathway |
| 作者: | Kuo, T-F
Chen, T-Y
Jiang, S-T
Chen, K-W
Chiang, Y-M
Hsu, Y-J
Liu, Y-J
Chen, H-M
Yokoyama, K. K.
Tsai, K-C
Yeh, H-H
Chen, Y-R
Yang, M-T
Yang, C-Y
Yang, W-C |
| 貢獻者: | Acad Sinica, Agr Biotechnol Res Ctr
Natl Taiwan Univ, Inst Biotechnol
Natl Appl Res Labs, Natl Lab Anim Ctr
Kaohsiung Med Univ, Grad Inst Med
Natl Res Inst Chinese Med, Minist Hlth & Welf
Taipei Med Univ, PhD Program Biotechnol Med
Chia Nan Univ Pharm & Sci, Drug Discovery & Dev Ctr
Natl Chung Hsing Univ, Grad Inst Biotechnol
Acad Sinica, Taiwan Int Grad Program, Mol & Biol Agr Sci
Natl Chung Hsing Univ
Natl Chung Hsing Univ, Dept Life Sci
Natl Yang Ming Univ, Inst Pharmacol
Natl Taiwan Ocean Univ, Dept Aquaculture |
| 關鍵字: | Endoplasmic-Reticulum Stress
Induced Cell-Death
Oxidoreductase Erp57
Induced Apoptosis
Inhibition
Identification
Generation
Expression
Viability
Discovery |
| 日期: | 2017-09-28 |
| 上傳時間: | 2018-11-30 15:54:55 (UTC+8) |
| 出版者: | Nature Publishing Group |
| 摘要: | Protein disulfide isomerase a4 (PDIA4) is implicated in the growth and death of tumor cells; however, its molecular mechanism and therapeutic potential in cancer are unclear. Here, we found that PDIA4 expression was upregulated in a variety of tumor cell lines and human lung adenocarcinoma tissues. Knockdown and overexpression of PDIA4 in tumor cells showed that PDIA4 facilitated cell growth via the reduction of caspases 3 and 7 activity. Consistently, Lewis lung carcinoma cells overexpressing PDIA4 grew faster than did parental cells in tumor-bearing mice, as shown by a reduced survival rate, increased tumor size and metastasis, and decreased cell death and caspases 3 and 7 activity. PDIA4 knockdown resulted in opposite outcomes. Moreover, results obtained in mice with spontaneous hepatoma indicated that PDIA4 deficiency significantly reduced hepatic tumorigenesis and cyst formation and increased mouse survival, tumor death, and caspases 3 and 7 activity. Mechanistic studies illustrated that PDIA4 negatively regulated tumor cell death by inhibiting degradation and activation of procaspases 3 and 7 via their mutual interaction in a CGHC-dependent manner. Finally, we found that 1,2-dihydroxytrideca-5,7,9,11-tetrayne, a PDIA4 inhibitor, reduced tumor development via enhancement of caspase-mediated cell death in TSA tumor-bearing mice. These findings characterize PDIA4 as a negative regulator of cancer cell apoptosis and suggest that PDIA4 is a potential therapeutic target for cancer. |
| 關聯: | Oncogene, v.36, n.39, pp.5484-5496 |
| 顯示於類別: | [藥學系(所)] 期刊論文
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