scholarly journals CRSP8 promotes thyroid cancer progression by antagonizing IKKα-induced cell differentiation

2020 ◽  
Author(s):  
Yina Liao ◽  
Yijun Hua ◽  
Yizhuo Li ◽  
Changlin Zhang ◽  
Wendan Yu ◽  
...  
Keyword(s):  
Thyroid Cancer ◽  
Cell Growth ◽  
Cancer Cells ◽  
Cancer Progression ◽  
Direct Interaction ◽  
Anaplastic Thyroid Cancer ◽  
Human Thyroid ◽  
Induced Apoptosis ◽  
Thyroid Cancer Cells

Abstract CRSP8 plays an important role in recruiting mediators to genes through direct interaction with various DNA-bound transactivators. In this study, we uncovered the unique function of CRSP8 in suppressing thyroid cancer differentiation and promoting thyroid cancer progression via targeting IKKα signaling. CRSP8 was highly expressed in human thyroid cancer cells and tissues, especially in anaplastic thyroid cancer (ATC). Knockdown of CRSP8 suppressed cell growth, migration, invasion, stemness, and induced apoptosis and differentiation in ATC cells, while its overexpression displayed opposite effects in differentiated thyroid cancer (DTC) cells. Mechanistically, CRSP8 downregulated IKKα expression by binding to the IKKα promoter region (−257 to −143) to negatively regulate its transcription. Knockdown or overexpression of IKKα significantly reversed the expression changes of the differentiation and EMT-related markers and cell growth changes mediated by CRSP8 knockdown or overexpression in ATC or DTC cells. The in vivo study also validated that CRSP8 knockdown inhibited the growth of thyroid cancer by upregulating IKKα signaling in a mouse model of human ATC. Furthermore, we found that CRSP8 regulated the sensitivity of thyroid cancer cells to chemotherapeutics, including cisplatin and epirubicin. Collectively, our results demonstrated that CRSP8 functioned as a modulator of IKKα signaling and a suppressor of thyroid cancer differentiation, suggesting a potential therapeutic strategy for ATC by targeting CRSP8/IKKα pathway.

scholarly journals Bcl-2-Associated X Protein Is the Main Mediator of Manumycin A-Induced Apoptosis in Anaplastic Thyroid Cancer Cells

2005 ◽  
Vol 90 (6) ◽  
pp. 3583-3591 ◽  
Author(s):  
Jingxuan Pan ◽  
Huizhi Huang ◽  
Lily Sun ◽  
Bingliang Fang ◽  
Sai-Ching Jim Yeung
Keyword(s):  
Thyroid Cancer ◽  
Cancer Cells ◽  
Anaplastic Thyroid Cancer ◽  
X Protein ◽  
Induced Apoptosis ◽  
Thyroid Cancer Cells

Ceramide-Induced Apoptosis of Human Thyroid Cancer Cells Resistant to Apoptosis by Irradiation

Thyroid ◽  
2000 ◽  
Vol 10 (9) ◽  
pp. 733-740 ◽  
Author(s):  
Yuriy Sautin ◽  
Noboru Takamura ◽  
Stanislav Shklyaev ◽  
Yuji Nagayama ◽  
Akira Ohtsuru ◽  
...  
Keyword(s):  
Thyroid Cancer ◽  
Cancer Cells ◽  
Human Thyroid ◽  
Induced Apoptosis ◽  
Thyroid Cancer Cells

scholarly journals The Knockdown of Nrf2 Suppressed Tumor Growth and Increased the Sensitivity to Lenvatinib in Anaplastic Thyroid Cancer

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Zhongqin Gong ◽  
Lingbin Xue ◽  
Minghui Wei ◽  
Zhimin Liu ◽  
Alexander C. Vlantis ◽  
...  
Keyword(s):  
Thyroid Cancer ◽  
Cancer Cells ◽  
Papillary Thyroid Cancer ◽  
Cell Lines ◽  
Cancer Cell ◽  
Anaplastic Thyroid Cancer ◽  
Thyroid Cancer Cell ◽  
Papillary Thyroid ◽  
Thyroid Cancer Cells

Papillary thyroid cancer can dedifferentiate into a much more aggressive form of thyroid cancer, namely into anaplastic thyroid cancer. Nrf2 is commonly activated in papillary thyroid cancer, whereas its role in anaplastic thyroid cancer has not been fully explored. In this study, we used two cell lines and an animal model to examine the function of Nrf2 in anaplastic thyroid cancer. The role of Nrf2 in anaplastic thyroid cancer was investigated by a series of functional studies in two anaplastic thyroid cancer cell lines, FRO and KAT-18, and further confirmed with an in vivo study. The impact of Nrf2 on the sensitivity of anaplastic thyroid cancer cells to lenvatinib was also investigated to evaluate its potential clinical implication. We found that the expression of Nrf2 was significantly higher in anaplastic thyroid cancer cell line cells than in papillary thyroid cancer cells or normal control cells. Knockdown of Nrf2 in anaplastic thyroid cancer cells inhibited their viability and clonogenicity, reduced their migration and invasion ability in vitro, and suppressed their tumorigenicity in vivo. Mechanistically, knockdown of Nrf2 decreased the expression of Notch1. Lastly, knockdown of Nrf2 increased the sensitivity of anaplastic thyroid cancer cells to lenvatinib. As knockdown of Nrf2 reduced the metastatic and invasive ability of anaplastic thyroid cancer cells by inhibiting the Notch 1 signaling pathway and increased the cancer cell sensitivity to lenvatinib, Nrf2 could be a promising therapeutic target for patients with anaplastic thyroid cancer.

scholarly journals Resveratrol and its Nanoparticle suppress Doxorubicin/Docetaxel-resistant anaplastic Thyroid Cancer Cells in vitro and in vivo

2021 ◽  
Vol 5 (2) ◽  
pp. 143-154
Author(s):  
Le Xiong ◽  
Xiao-Min Lin ◽  
Jun-Hua Nie ◽  
Hai-Shan Ye ◽  
Jia Liu
Keyword(s):  
Thyroid Cancer ◽  
Cancer Cells ◽  
Anaplastic Thyroid Cancer ◽  
Thyroid Cancer Cells

scholarly journals Implication of Oxygen-Regulated Protein 150 (ORP150) in Apoptosis Induced by Proteasome Inhibitors in Human Thyroid Cancer Cells

2010 ◽  
Vol 31 (5) ◽  
pp. 779-780
Author(s):  
Yan-Yan Gao ◽  
Bao-Qin Liu ◽  
Zhen-Xian Du ◽  
Hai-Yan Zhang ◽  
Xiao-Fang Niu ◽  
...  
Keyword(s):  
Endoplasmic Reticulum ◽  
Transcription Factor ◽  
Thyroid Cancer ◽  
Cancer Cells ◽  
Proteasome Inhibitors ◽  
Proteasome Inhibition ◽  
26S Proteasome ◽  
Human Thyroid ◽  
Induced Apoptosis ◽  
Thyroid Cancer Cells

ABSTRACT Context The inhibition of the 26S proteasome may lead to endoplasmic reticulum stress, which has been shown to be implicated in the antitumoral effects of proteasome inhibitors. Oxygen-regulated protein 150 (ORP150) is an inducible endoplasmic reticulum chaperone that is up-regulated after numerous cellular insults and has a cytoprotective role for the maintenance of cellular viability. Objective The purpose of this study was to determine the involvement of ORP150 in cytotoxicity of thyroid cancer cells mediated by proteasome inhibition. Design The effects of proteasome inhibition on the expression of ORP150 were analyzed using real-time RT-PCR and Western blot. To ascertain the effect of ORP150, cells were transfected with ORP150 plasmid or small interfering RNA (siRNA) against ORP150, apoptotic cells, and induction of CCAAT/enhancer-binding protein homologous transcription factor (CHOP) mediated by proteasome inhibition were investigated. Results ORP150 was induced in thyroid cancer cells after proteasome inhibition. Suppression of activating transcription factor 4 expression by siRNA inhibited the up-regulation of ORP150 mediated by proteasome inhibitors. siRNA for ORP150 stimulated MG132-mediated apoptosis and induction of CHOP, a transcription factor with apoptosis-inducing activity. In contrast, ORP150-overexpressing cells demonstrated less susceptibility to MG132-induced apoptosis and displayed less up-regulation of CHOP. In addition, the sensitizing effect of small interfering ORP150 on apoptosis was suppressed by siRNA for CHOP. Conclusions These results suggest that up-regulation of ORP150 in thyroid cancer cells inhibits MG132-induced apoptosis via suppression of CHOP induction, thereby decreasing the potential antitumor activity of MG132.

Sign in / Sign up

Export Citation Format

Share Document