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MiR-30c-1* promotes natural killer cell cytotoxicity against human hepatoma cells by targeting the transcription factor HMBOX1.


ABSTRACT: Natural killer (NK) cells play a critical role in antitumor immunity, and the activation of NK cells is regulated by a series of NK cell receptors. Here, we show that crosslinking CD226, an important NK cell receptor, with the anti-CD226 mAb LeoA1 on NKL cells, regulated the expression of several microRNA and transmembrane tumor necrosis factor-?. Among them, miR-30c-1(*) was noticed because overexpression of miR-30c-1(*) triggered upregulation of transmembrane tumor necrosis factor-? expression and enhanced NK cell cytotoxicity against hepatoma cell lines SMMC-7721 and HepG2. Furthermore, we proved that the inhibitory transcription factor HMBOX1, which depressed the activation of NK cells, was the direct target gene of miR-30c-1(*). In conclusion, our results revealed a novel regulatory mechanism: miR-30c-1(*) promoted NK cell cytotoxicity against hepatoma cells by targeting HMBOX1.

SUBMITTER: Gong J 

PROVIDER: S-EPMC7659379 | biostudies-literature | 2012 Apr

REPOSITORIES: biostudies-literature

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miR-30c-1* promotes natural killer cell cytotoxicity against human hepatoma cells by targeting the transcription factor HMBOX1.

Gong Jiuyu J   Liu Rongrong R   Zhuang Ran R   Zhang Yun Y   Fang Liang L   Xu Zhuwei Z   Jin Liang L   Wang Tao T   Song Chaojun C   Yang Kun K   Wei Yuying Y   Yang Angang A   Jin Boquan B   Chen Lihua L  

Cancer science 20120213 4


Natural killer (NK) cells play a critical role in antitumor immunity, and the activation of NK cells is regulated by a series of NK cell receptors. Here, we show that crosslinking CD226, an important NK cell receptor, with the anti-CD226 mAb LeoA1 on NKL cells, regulated the expression of several microRNA and transmembrane tumor necrosis factor-α. Among them, miR-30c-1(*) was noticed because overexpression of miR-30c-1(*) triggered upregulation of transmembrane tumor necrosis factor-α expression  ...[more]

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