Inhibiting EZH2 rescued bupivacaine-induced neuronal apoptosis in spinal cord dorsal root ganglia in mice

Journal of Anesthesia
Jinwei ZhengWei Wang

Abstract

In the present work, we intended to explore the function of enhancer of zeste homolog 2 (EZH2) in modulated anesthetic reagent bupivacaine-induced neuronal apoptosis in spinal cord dorsal root ganglia (DRG). Murine DRG explant was treated with 5 mM bupivacaine in vitro to induce neuronal apoptosis, which was examined by a TUNEL assay. Protein and mRNA expressions of EZH2 in bupivacaine-treated DRG were examined by western blot and qRT-PCR assays. EZH2 was downregulated by siRNA in bupivacaine-treated DRG. Its functional role in protecting bupivacaine-induced neuronal apoptosis was examined. In addition, apoptotic protein caspase-9 and EZH2-associated signaling pathway, and tropomyosin receptor kinase C (TrkC) were further investigated, by western blot assay, in EZH2-downregulated and bupivacaine-injured DRG. In vitro treatment of bupivacaine-induced DRG neuronal apoptosis, and upregulated EZH2 at both protein and mRNA levels. SiRNA transfection successfully downregulated EZH2, as confirmed by western blot and qRT-PCR assays. Examination of TUNEL assay showed that EZH2 downregulation rescued bupivacaine-induced DRG neuronal apoptosis. Moreover, in bupivacaine-injured DRG, EZH2 downregulation reduced caspase-9, whereas upregulate...Continue Reading

References

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Citations

May 8, 2019·Artificial Cells, Nanomedicine, and Biotechnology·Yan ChenXianhui Yang
Sep 30, 2020·Naunyn-Schmiedeberg's Archives of Pharmacology·Ting ZhengXiaochun Zheng

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