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Current Cancer Drug Targets

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ISSN (Print): 1568-0096
ISSN (Online): 1873-5576

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Research Article

Sam68 Promotes the Progression of Human Breast Cancer through inducing Activation of EphA3

Author(s): Xinxin Chen*, Lehong Zhang*, Min Yuan, Ziqiao Kuang, Ying Zou, Tian Tang, Wangjian Zhang, Xiaowu Hu, Ting Xia , Tengfei Cao and Haixia Jia

Volume 20, Issue 1, 2020

Page: [76 - 83] Pages: 8

DOI: 10.2174/1568009619666190718124541

Price: $65

Abstract

Background: Src associated with mitosis of 68 kDa (Sam68), is often highly expressed in human cancers. Overexpression of Sam68 has been shown to be correlated with poor survival prognosis in some cancer patients. However, little is known whether Sam68 plays a role in promoting metastasis in breast cancer.

Materials and Methods: The expression of Sam68 protein in breast cancer tissue was detected by immunohistochemistry. Trans-well assay, wound-healing, real-time PCR and Western blotting analysis were used to detect the effect of Sam68 on promoting EMT or metastasis of breast cancer. Next-generation RNA sequencing was used to analyze genes that may be regulated by Sam68.

Results: Sam68 plays a positive role in promoting breast cancer metastasis. Sam68 was found to be overexpressed in breast cancer along with lymph node metastasis. MMP-9 was also found to be overexpressed in breast cancer tissue and was correlated to the expression of Sam68 (P<0.01). Xenograft in NOD/SCID mice and in vitro experiments confirmed that the invasion and metastatic ability of breast cancer cells were regulated by Sam68. And EPHA3 could be up-regulated by Sam68 in breast cancer.

Conclusion: High expression of Sam68 participates in breast cancer metastasis by up-regulating the EPHA3 gene.

Keywords: Sam68, breast cancer, EPHA3, metastasis, immunohistochemistry, Xenograft.

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