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30 June 2016 : Laboratory Research

[Retracted: 04 Mar 2022] Targeting Transforming Growth Factor-Beta1 (TGF-β1) Inhibits Tumorigenesis of Anaplastic Thyroid Carcinoma Cells Through ERK1/2-NFκB-PUMA Signaling

Qiang YinDE, Shan LiuAF, Anbing DongAF, Xiufang MiB, Fengyun HaoACF, Kejun ZhangACD

DOI: 10.12659/MSM.898702

Med Sci Monit 2016; 22:2267-2277

The in vitro experiments of TGF-ß1 and the results of RT-PCR could not be repeated. In order not to affect others, the authors have asked for a retraction. Reference: Qiang Yin, Shan Liu, Anbing Dong, Xiufang Mi, Fengyun Hao, Kejun Zhang. Targeting Transforming Growth Factor-Beta1 (TGF-ß1) Inhibits Tumorigenesis of Anaplastic Thyroid Carcinoma Cells Through ERK1/2-NFkappakB-PUMA Signaling. Med Sci Monit 2016; 22: 2267-2277. DOI: 10.12659/MSM.898702

Abstract

BACKGROUND: The transforming growth factor-beta (TGF-β) signaling pathway plays a critical role in promoting tumor growth. TGF-β1was found to be overexpressed in anaplastic thyroid cancer (ATC). We therefore tested our hypothesis that targeting TGF-β1 inhibits tumorigenesis of ATC cells.

MATERIAL AND METHODS: Effects of TGF-β1 stimulation or TGF-β1 inhibition by small interfering RNA (TGF-β1siRNA) on proliferation, colony formation, and apoptosis in 8505C cells in vitro was detected using siRNAs and inhibitors to examine the TGF-β1 signaling pathway. A subcutaneously implanted tumor model of 8505C cells in nude mice was used to assess the effects of TGF-β1 inhibition on tumorigenesis development.

RESULTS: TGF-β1siRNAs decreased proliferation and colony formation, and increased apoptosis in 8505C cells in vitro and inhibited tumor growth in vivo. TGF-β1siRNA inhibited phosphorylation ERK1/2 (pERK1/2) and increased p65-dependant PUMA mRNA and protein expression. Knockdown of p65 or PUMA by siRNA reduced TGF-β1siRNA-induced apoptosis, as well as caspase-3 and PARP activation. Upregulation of p65 or PUMA expression by TGF-β1siRNA requires pERK1/2 inhibition. TGF-β1 shRNA inhibited tumor growth in vivo.

CONCLUSIONS: Therapies targeting the TGF-β1 pathway may be more effective to prevent primary tumor formation. The ability of this therapy to decrease tumorigenesis may be related to ERK1/2/NF-κB/PUMA signaling.

Keywords: Retracted Publication

Retraction note

Med Sci Monit 2022; 28:e936562     https://medscimonit.com/abstract/index/idArt/936562
 
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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750