Metastasis suppressors Nm23H1 and Nm23H2 differentially regulate neoplastic transformation and tumorigenesis

Cancer Letters
Yao TongYung H Wong

Abstract

Nm23H1 and H2 are prototypical metastasis suppressors with diverse functions, but recent studies suggest that they may also regulate tumorigenesis. Here, we employed both cellular and in vivo assays to examine the effect of Nm23H1 and H2 on tumorigenesis induced by oncogenic Ras and/or p53 deficiency. Co-expression of Nm23H1 but not H2 in NIH3T3 cells effectively suppressed neoplastic transformation and tumorigenesis induced by the oncogenic H-Ras G12V mutant. Overexpression of Nm23H1 but not H2 also inhibited tumorigenesis by human cervical cancer HeLa cells with p53 deficiency. However, in human non-small-cell lung carcinoma H1299 cells harboring N-Ras Q61K oncogenic mutation and p53 deletion, overexpression of Nm23H1 did not affect tumorigenesis in nude mice assays, while overexpression of Nm23H2 enhanced tumor growth with elevated expression of the c-Myc proto-oncogene. Collectively, these results suggest that Nm23H1 and H2 have differential abilities to modulate tumorigenesis.

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Citations

Dec 13, 2016·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Wen-Teish ChangChin-Shiu Huang
Feb 17, 2018·Laboratory Investigation; a Journal of Technical Methods and Pathology·Mathieu BoissanMarie-Lise Lacombe
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Oct 24, 2017·Laboratory Investigation; a Journal of Technical Methods and Pathology·Kevin Adam, Tony Hunter
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Jan 10, 2021·Life Sciences·Liting YuChangying Guo

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