期刊
JOURNAL OF BIOLOGICAL REGULATORS AND HOMEOSTATIC AGENTS
卷 37, 期 9, 页码 4955-4963出版社
BIOLIFE SAS
DOI: 10.23812/j.biol.regul.homeost.agents.20233709.482
关键词
endometrial cancer; NPAS2; ZHX3; proliferation; apoptosis
This study found that inhibiting the expression of the NPAS2-ZHX3 axis can suppress cell proliferation and induce apoptosis in endometrial cancer cells, thereby attenuating tumor development.
Background & Purpose: Neuronal PAS domain protein 2 (NPAS2) is a biological rhythm gene involved in cancer progression. This study explored the function of NPAS2 on endometrial cancer (EC), as well as the potential mechanisms involving NPAS2-zinc fingers and homeoboxes-3 (ZHX3) axis. Methods: Quantitative real-time polymerase chain reaction (qRT-PCR) and western blot were used to measure the level of NPAS2 and ZHX3 in EC cells. Cell proliferation was analyzed using 3-(4,5)-dimethylthiahiazo (-z-y1)-3,5-di-phenytetrazoliumromide (MTT) and colony formation assays. Flow cytometry was used to test cell cycle and apoptosis. The effect of NPAS2 on tumor growth was measured using a mouse xenograft model. The interaction between NPAS2 and ZHX3 was further confirmed by feedback experiments in vitro. Results: NPAS2 expression was higher in EC cell lines. Knockdown of NPAS2 repressed proliferation, induced gap (G1)/ synthesis (S) arrest, and promoted apoptosis in EC cells. NPAS2 knockdown also suppressed tumor growth. Furthermore, NPAS2 was significantly positively correlated with ZHX3. Overexpression of ZHX3 reverses the anti-tumor effects of NPAS2 silencing on EC cells. Conclusions: Lower expression of the NPAS2-ZHX3 axis could inhibit cell proliferation and induce apoptosis, thereby attenuating the development of EC.
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