Thyroid hormone receptors promote metastasis of human hepatoma cells via regulation of TRAIL
| العنوان: | Thyroid hormone receptors promote metastasis of human hepatoma cells via regulation of TRAIL |
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| المؤلفون: | Chia-Jung Liao, Yin-Cheng Huang, Yi-Hsin Tseng, Shen Liang Chen, C. Y. Chen, Sheng-Ming Wu, Chien-Yuh Yeh, Ming-Ming Tsai, I-Hsiao Chung, Kwang-Huei Lin, Hsiang-Cheng Chi, Wei Jan Chen, Chung-Ying Tsai, Yang Hsiang Lin, Chen-Hsin Liao |
| المصدر: | Cell Death & Differentiation. 19:1802-1814 |
| بيانات النشر: | Springer Science and Business Media LLC, 2012. |
| سنة النشر: | 2012 |
| مصطلحات موضوعية: | medicine.medical_specialty, Carcinoma, Hepatocellular, Transplantation, Heterologous, bcl-X Protein, Apoptosis, Mice, SCID, Biology, medicine.disease_cause, Metastasis, TNF-Related Apoptosis-Inducing Ligand, Mice, Downregulation and upregulation, Cell Line, Tumor, Internal medicine, medicine, Animals, Humans, Neoplasm Metastasis, Receptor, Molecular Biology, Original Paper, Receptors, Thyroid Hormone, Thyroid hormone receptor, Liver Neoplasms, Hep G2 Cells, Cell Biology, medicine.disease, Up-Regulation, Endocrinology, Matrix Metalloproteinase 9, Tumor progression, Matrix Metalloproteinase 7, Cancer cell, Cancer research, Matrix Metalloproteinase 2, Triiodothyronine, Tumor necrosis factor alpha, Carcinogenesis |
| الوصف: | Although accumulating evidence has confirmed the important roles of thyroid hormone (T(3)) and its receptors (TRs) in tumor progression, the specific functions of TRs in carcinogenesis remain unclear. In the present study, tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL) was directly upregulated by T(3) in TR-overexpressing hepatoma cell lines. TRAIL is an apoptotic inducer, but it can nonetheless trigger non-apoptotic signals favoring tumorigenesis in apoptosis-resistant cancer cells. We found that TR-overexpressing hepatoma cells treated with T(3) were apoptosis resistant, even when TRAIL was upregulated. This apoptotic resistance may be attributable to simultaneous upregulation of Bcl-xL by T(3), because (1) knockdown of T(3)-induced Bcl-xL expression suppressed T(3)-mediated protection against apoptosis, and (2) overexpression of Bcl-xL further protected hepatoma cells from TRAIL-induced apoptotic death, consequently leading to TRAIL-promoted metastasis of hepatoma cells. Moreover, T(3)-enhanced metastasis in vivo was repressed by the treatment of TRAIL-blocking antibody. Notably, TRAIL was highly expressed in a subset of hepatocellular carcinoma (HCC) patients, and this high-level expression was significantly correlated with that of TRs in these HCC tissues. Together, our findings provide evidence for the existence of a novel mechanistic link between increased TR and TRAIL levels in HCC. Thus, TRs induce TRAIL expression, and TRAIL thus synthesized acts in concert with simultaneously synthesized Bcl-xL to promote metastasis, but not apoptosis. |
| تدمد: | 1476-5403 1350-9047 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af51a9365d870d4339e112727ba0148eTest https://doi.org/10.1038/cdd.2012.58Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....af51a9365d870d4339e112727ba0148e |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14765403 13509047 |
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