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目的：构建携带人神经生长因子（ｈ Ｎ Ｇ Ｆ） 基因的真核细胞表达载体，为应用 Ｎ Ｇ Ｆ 进行老年性痴呆（ Ａ Ｄ） 等疾病基因治疗打基础。方法：应用基因重组技术将ｈ Ｎ Ｇ Ｆｃ Ｄ Ｎ Ａ 克隆到逆转录病毒载体ｐ Ｌ Ｘ Ｓ Ｎ 中，用限制性内切酶酶切分析重组质粒ｐ Ｌ Ｎ Ｇ Ｆ Ｓ Ｎ 中ｈ Ｎ Ｇ Ｆ基因的插入方向，用 Ｐ Ｃ Ｒ、斑点杂交和 Ｓｏｕｔｈｅｒｎ 杂交对重组质粒ｐ Ｌ Ｎ Ｇ Ｆ Ｓ Ｎ 作进一步鉴定。结果：ｈ Ｎ Ｇ Ｆｃ Ｄ Ｎ Ａ已正确地克隆到逆转录病毒载体ｐ Ｌ Ｘ Ｓ Ｎ 中，而构建成重组逆转录病毒载体ｐ Ｌ Ｎ Ｇ Ｆ Ｓ Ｎ。结论：真核细胞表达载体ｐ Ｌ Ｎ Ｇ Ｆ Ｓ Ｎ 的成功构建，为进一步开展 Ｎ Ｇ Ｆ基因治疗 Ａ Ｄ 等中枢神经系统疾病奠定了基础。
OBJECTIVE: To construct eukaryotic expression vector carrying human NGF (hNGF) gene and lay the foundation for the gene therapy of diseases such as senile dementia (AD) using NGF. METHODS: The hNG Fc D N A gene was cloned into the retroviral vector p L X S N using gene recombination technique. Restriction endonuclease digestion was used to analyze h N G F in the recombinant plasmid p L N G F S N The insertion direction of the gene was further identified by PCR, dot blot and Southern hybridization. The recombinant plasmid pL N G F S N was further identified. Results: The hNG Fc D N A was correctly cloned into the retroviral vector p L X S N and constructed into the recombinant retroviral vector p L N G F S N. CONCLUSION: The successful construction of eukaryotic expression vector pLNG F S N lays the foundation for the further development of NGF gene therapy for central nervous system diseases like AD.