从手术切除的CNV膜中提取并培养RPE细胞。已知这类RPE细胞同时表达VEGF和FGF2,该团队利用RPE诱导的新生血管出芽的特点,将RPE细胞与内皮细胞(endothelial cell,EC)共同培养
,通过测量EC球体的平均芽长来量化RPE细胞的血管生成作用,结果发现:RPE细胞与微血管内皮细胞和脐静脉内皮细胞共培养中均诱导了强烈的血管生成反;单独使用贝伐单抗(一种人源化的VEGF抗体,目前广泛应用于湿性AMD的治疗)的组中RPE诱导的EC发芽显著减少;单独使用抗FGF2抗体的组中RPE诱导的EC发芽没有显著减少;在联合抗VEGF和抗FGF2治疗的组中,2种生长因子表达均降低;同时EC发芽率较单独使用贝伐单抗显著降低。此结果验证了VEGF和FGF2的联合抑制效果更好
通 过E C增殖、迁移和小管形成试验评估了RC28的体外生物活性,并初步比较了单靶点拮抗剂贝伐单抗、雷珠单抗、阿非贝西普和康柏西普等VEGF抑制剂。在激光诱导恒河猴CNV模型中,Yang等
CNV的发病是一个复杂的过程,涉及多种信号传导途径。多种细胞因子参与CNV的发生和发展。CNV的发生与Bruch膜破裂、毛细血管EC的增殖、迁移及血管生成有关。在对CNV的 治疗中,传统的抗VEGF药物治疗存在一定的不良反应,同时存在非VEGF依赖的CNV。与VEGF类似,FGF也是参与CNV形成的重要因子。FGF家族共有2 3个成员(FGF1~23)中,分别与4个受体(FGFR1~4)结合,从而产生相应的作用。FGF2,FGF5,FGF7,FGF8和FGF9在CNV膜中的表达,其中FGF2对CNV形成最为关键。FGF2主要通过调控的STAT3促进激光诱导的小鼠CNV的形成。沉默FGF7可以抑制激光诱导的小鼠CNV。FGF21抑制了APN介导的激光诱导小鼠CNV。在FGF家族2 3个成员中,除上述因子外,是否还有其他因子在CNV的形成中有所表达,这一点有待研究。此外,能促进或者抑制CNV形成的FGF家族中相关因子,是否只有FGF2,FGF7及FGF21,这一点更值得研究。目前VEGF及FGF2的双受体抑制剂RC28-E已经进入临床实验阶段。因此在对VEGF抑制的同时,对FGF进行调控有望成为CNV防治的新方法,或许可以为治疗新生血管性眼病提供新的治疗途径。
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本文引用:李乐乐, 朱曼辉, 邱昭娴, 桑爱民. 成纤维细胞生长因子与脉络膜新生血管关系的研究进展[ J]. 眼科学报, 2020, 35(2):99-105. doi: 10.3978/j.issn.1000-4432.2020.04.03
Cite this article as: LI Lele, ZHU Manhui, QIU Zhaoxian, SANG Aimin.Research progress on the relationship between fibroblast growth factor and choroidal neovascularization[ J]. Yan Ke Xue Bao, 2020, 35(2): 99-105. doi: 10.3978/j.issn.1000-4432.2020.04.03