Elevated HOXA13 expression promotes the proliferation and metastasis of gastric cancer partly via activating Erk1/2

Autor:	Junyong Weng, Zhengqian Chen, Zeyin Rong, Chongzhi Zhou, Zhiwei Qin, Shanbao Li
Rok vydání:	2019
Předmět:	0301 basic medicine Gene knockdown biology medicine.diagnostic_test Cell growth Chemistry Vimentin Transcriptome 03 medical and health sciences 030104 developmental biology 0302 clinical medicine Cyclin D1 Oncology Western blot 030220 oncology & carcinogenesis Cancer research biology.protein medicine Pharmacology (medical) Epithelial–mesenchymal transition Transcription factor
Zdroj:	OncoTargets and Therapy. 12:1803-1813
ISSN:	1178-6930
DOI:	10.2147/ott.s196986
Popis:	Purpose HOXA13 is a transcription factor of the Homeobox (HOX) gene family, which is highly evolutionarily conserved. HOXA13 is upregulated and associated with oncogenic properties in some cancers. Here, we studied the potential mechanism of HOXA13-mediated proliferation and metastasis in gastric cancer (GC). Methods Quantitative real-time PCR, Western blot, and immunohistochemistry were used to detect HOXA13 expression levels in GC. In vitro and in vivo assays were performed to investigate the function of HOXA13 in GC cell proliferation, migration, and invasion. RNA-Seq transcriptome analysis was performed to study the underlying mechanism of HOXA13-mediated aggressiveness in GC. Results HOXA13 mRNA and protein expression levels were upregulated in GC tissues. According to Cell Counting Kit-8 and colony formation assays, we found that HOXA13 over-expression promoted proliferation. Flow cytometry analysis showed that HOXA13 overexpression or knockdown led to G1-S phase transition or G1 phase arrest, respectively. Western blot analysis results showed that HOXA13 overexpression increased cyclin D1 expression, while knockdown decreased its expression. Wound healing and transwell assay results demonstrated that HOXA13 overexpression promoted the migration and invasion of GC cells. Western blot analysis results also showed that HOXA13 overexpression upregulated N-cadherin and vimentin and downregulated E-cadherin, while HOXA13 knockdown led to the opposite results, indicating that HOXA13 might participate in epithelial to mesenchymal transition. These results were verified in vivo by tumor xenograft and metastasis assays. Mechanistically, using RNA-Seq transcriptome analysis, we found that Erk1/2 activation played an important role in HOXA13-induced GC progression. Conclusion Our results show that HOXA13 plays an important role in GC development. HOXA13 overexpression promotes proliferation and metastasis partly via activation of Erk1/2 in GC. Thus, HOXA13, together with Erk1/2, may be promising targets for novel anticancer strategies.
Databáze:	OpenAIRE
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