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30 June 2016 : Laboratory Research

[Retracted] 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

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

SELECT DATE(`ARTICLE_DATE`.`DATE_MAIN`) AS `dat`, `JOUR_WWW_ARTICLES`.`ID_ARTICLE` FROM `JOUR_WWW_ARTICLES` INNER JOIN `ARTICLE_DATE` ON (`JOUR_WWW_ARTICLES`.`ID_ARTICLE` = `ARTICLE_DATE`.`ICID`) WHERE `ARTICLE_DATE`.`ID_DATE_KIND` = 5 AND `JOUR_WWW_ARTICLES`.`ID_PARENT_ARTICLE` =
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30 June 2016 : Laboratory Research

[Retracted] 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

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

SELECT DATE(`ARTICLE_DATE`.`DATE_MAIN`) AS `dat`, `JOUR_WWW_ARTICLES`.`ID_ARTICLE` FROM `JOUR_WWW_ARTICLES` INNER JOIN `ARTICLE_DATE` ON (`JOUR_WWW_ARTICLES`.`ID_ARTICLE` = `ARTICLE_DATE`.`ICID`) WHERE `ARTICLE_DATE`.`ID_DATE_KIND` = 5 AND `JOUR_WWW_ARTICLES`.`ID_PARENT_ARTICLE` =
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 9
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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750