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目的:初步探讨锌-α2糖蛋白(ZAG)在人精子顶体反应中的作用。方法采用ZAG抗体对人精子进行免疫荧光染色,激光共聚焦显微镜观察ZAG在顶体反应前后定位的变化,并通过精子透明带结合实验进一步证明ZAG在顶体反应中的作用。结果顶体反应后精子顶体头部的ZAG荧光明显下降甚至消失。精子经ZAG抗体处理后,其透明带结合能力显著下降。结论 ZAG在人精子顶体反应中发挥一定的作用,并影响人精子的透明带结合能力。本研究为探索ZAG在受精过程中的功能及分子作用机制奠定基础。“,”Objective To explore the effects of ZAG(Zn-alpha2-glycoprotein) on the process of AR. Methods Indirect immunofluorescence and spermatozoa-ZP binding tests were used to analyze the effects of ZAG on human sperm acrosome reaction. Results Immunofluorescence staining revealed intensive immunoreactivity of ZAG in the acrosomal region was largely reduced in acrosome reacted spermatozoa, and human spermatozoa-ZP binding test indicated the spermatozoa’ s ability binding to ZP significantly decreased in spermatozoa treated with anti-ZAG antibody. Conclusion ZAG has significant effects on the acrosome reaction and the spermatozoa-ZP binding.