沉默吲哚胺2,3-双加氧酶2基因对黑色素瘤细胞B16-BL6增殖、迁移和侵袭的影响

目的:探讨沉默吲哚胺2,3-双加氧酶2(IDO2)基因对小鼠黑色素瘤B16-BL6细胞增殖、迁移及侵袭等生物学行为的影响。方法:IDO2-siRNA转染体外培养的黑色素瘤细胞B16-BL6,应用real-time PCR和Western blot检测IDO2和IDO1基因的表达;平板集落形成实验检测IDO2基因沉默对肿瘤细胞增殖的影响;细胞划痕实验和Transwell小室细胞迁移实验观察IDO2对肿瘤细胞迁移的影响;Transwell小室侵袭实验观察肿瘤细胞侵袭能力。结果:沉默B16-BL6细胞中IDO2基因能使细胞单集落形成密度降低,划痕迁移变慢,Transwell小室细胞迁移数减少,侵袭细胞数减少。结论:沉默IDO2可以影响黑色素瘤细胞B16-BL6的增殖、迁移和侵袭能力。

Gene silencing of indoleamine 2,3-dioxygenase 2 influences proliferation,migration and invasion of B16-BL6 melanoma cells

AIM: To investigate the effects of indoleamine 2, 3-dioxygenase 2 (IDO2) silencing on proliferation, migration and invasion of B16-BL6 melanoma cells.METHODS: IDO2-siRNA was transfected into the B16-BL6 melanoma cells in vitro. The expression of IDO2 or IDO1 at mRNA and protein levels was detected by real-time PCR and Western blot. Colony formation assay was performed to analyze the proliferation of IDO2-silencing tumor cells. The migration ability of B16-BL6 cells after silencing of IDO2 was measured by wound healing assay and Transwell cell migration assay. The invasion ability of the tumor cells was detected by Transwell cell invasion assay.RESULTS: IDO2-siRNA signi-ficantly down-regulated IDO2 expression in B16-BL6 melanoma cells, and did not affect IDO1 expression. Compared with control group, the colony formation ability, the migratory distance measured by wound healing assay, and the migration and the invasion cell numbers detected by Transwell assay all remarkably decreased in the IDO2-silencing cells.CONCLUSION: IDO2 silencing affects the proliferation, migration and invasion abilities of the B16-BL6 melanoma cells.