rhIL-10对肿瘤坏死因子-α诱导的血管外膜成纤维细胞增殖的影响

目的 观察重组人白细胞介素-10(rhIL—10)对肿瘤坏死因子-α(TNF-α)诱导的成纤维细胞增殖的影响。方法 体外培养NIH／3T3细胞，应用rhIL-10与TNF-α共同作用并设立对照进行比较，采用MTS／PES法确定NIH／3T3细胞的增殖状态。应用流式细胞仪测定细胞周期。结果 TNF-α对NIH／3T3细胞增殖具有明显的刺激作用。rhIL-10单独应用对NIH／3T3细胞生长没有影响。在TNF-α刺激下，一定剂量的rhIL-10可抑制NIH／3T3细胞的增殖。rhIL-10可使TNF-α作用下的NIH／3T3细胞大部分处于G0／G1期。结论 rhIL-10能明显抑制由TNF-α刺激的成纤维细胞增殖。

Effects of recombinant human interleukin-10 on tumor necorsis factor-alpha-induced adventitial fibroblast proliferation in vitro]

OBJECTIVE: To observe the effects of recombinant human interleukin-10 (rhIL-10) on adventitial fibroblast proliferation induced by tumor necrosis factor-alpha TNF-alpha in vitro. METHODS: In this controlled study, NIH/3T3 cells cultured in vitro were treated with TNF-alpha and recombinant human interleukin-10 (rhIL-10), respectively, and the cell proliferation was determined by non-radioactive MTS/PES assay. Cell cycle analysis was performed using flow cytometry. RESULTS: Compared with the control cells, TNF-alpha significantly stimulated NIH/3T3 cell proliferation, wherea. rhIL-10 had no such effect. With TNF-alpha stimulation, rhIL-10 at the dose as low as 1 ng/ml inhibited the proliferation of NIH/3T3 cells (P<0.05). The number of cells in G(0)/G(1) phase treated with both TNF-alpha and rhIL-10 was higher than those treated with TNF-alpha alone (P<0.05), as shown by flow cytometry. CONCLUSION: rhIL-10 can significantly inhibit the proliferation of adventitial fibroblasts induced by TNF-alpha in vitro.