RASSF8 regulates progression of cutaneous melanoma through nuclear factor-κb

Oncotarget
Jinhua WangDave S B Hoon

Abstract

Our group previously demonstrated that the RASSF1 gene has a significant tumor suppressor role in cutaneous melanoma. The RASSF8 gene is a member of the N-terminal RASSF gene family. Previously, we identified RASSF8 (HOJ1, NCBI Gene ID:11228) expression in cutaneous melanoma; however the functional role of RASSF8 in melanoma is not known. RASSF8 expression was assessed in melanoma cell lines and tumors of different AJCC stages. Results indicated that RASSF8 expression was low in metastatic melanoma lines and decreased with melanoma progression. We then explored the mechanism of RASSF8 downregulation in melanoma by assessing methylation of RASSF8 and demonstrated that methylation of RASSF8 gene promoter was higher in advanced than in early stages melanomas. Functional activity of RASSF8 in melanoma lines by knockdown and overexpression of RASSF8 demonstrated that RASSF8 expression significantly inhibited cell growth, cell migration and invasion, whereas knockdown of RASSF8 expression significantly increased cell growth, cell migration and invasion of melanoma cells by increasing expression of P65 and its downstream target IL-6. Moreover RASSF8 was found to induce apoptosis in melanoma cells by activating the P53-P21 pathway, and...Continue Reading

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Citations

Aug 18, 2016·Oncotarget·Jinhua WangGuanhua Du
Feb 23, 2018·The Journal of Biological Chemistry·Isai Pratha KarthikSundarasamy Mahalingam
May 5, 2018·The Journal of Pharmacy and Pharmacology·Yalin ChenYingmei Zhang
Apr 9, 2017·Clinical Cancer Research : an Official Journal of the American Association for Cancer Research·Yuuki IidaDave S B Hoon

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Methods Mentioned

BETA
xenografts
PEAT
xenograft
reverse transcription-PCR
PCR
Laser Capture Microdissection
flow cytometry
Assay
Transfection

Software Mentioned

Alpha Ease FCTM
NIS elements
TCGA
Image J
BD FACSuite

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