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Decreased expression of protein tyrosine kinase 6 contributes to tumor progression and metastasis in laryngeal squamous cell carcinoma.

Abstract：

BACKGROUND:PTK6 is involved in cell proliferation, invasion and migration. Patients with lower PTK6 expression predicts poor prognosis of LSCC. However, the mechanism of PTK6 in LSCC progression remains unclear. We investigated the role of PTK6 in the pathogenesis of LSCC. METHODS:Human LSCC tissues and paired adjacent non-tumor tissues were obtained to evaluate PTK6 expression. The biological function of PTK6 in LSCC was determined by overexpression of PTK6 in Hep-2 cells in vitro and in nude mice. The potential PTK6 target factors and signaling pathways were identified by Western blotting assay and immunohistochemical staining. RESULTS:PTK6 was downregulated in tissues of human LSCC. Biological function investigation of PTK6 demonstrated that overexpression of PTK6 significantly decreased cell growth, clonogenicity, invasion and migration capacity in vitro and suppressed xenograft tumor growth as well as lung metastasis in vivo. PTK6 suppresses LSCC proliferation mainly by inhibiting c-myc and cyclinD1 expression. In addition, PTK6 promotes cell apoptosis in LSCC. Moreover, PTK6 mitigated LSCC invasion and migration through regulating EMT and MMP-9. CONCLUSION:PTK6 plays a tumor suppressor role in LSCC by regulating c-myc and cyclinD1 expression, cell apoptosis, EMT and MMP-9.

journal_name

Biochem Biophys Res Commun

journal_title

Biochemical and biophysical research communications

authors

Wu D,Zhang X,Liu Z,Yan H,Mai J,Zhao Z,Zhong Q,Liu X

doi

10.1016/j.bbrc.2018.07.051

subject

Has Abstract

pub_date

2018-09-10 00:00:00

pages

1378-1384

issue

3

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(18)31546-8

journal_volume

503

pub_type

杂志文章

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