RGD肽与肿瘤诊治的研究进展

目的 介绍精氨酸-甘氨酸-天冬氨酸(RGD)肽在肿瘤诊治领域的研究现状、价值及发展前景。方法 对RGD肽在肿瘤诊治领域的实验研究新进展进行综述。结果 RGD肽存在于多种生物细胞外基质中，能特异性识别细胞表面整和素并与之结合，从而介导多种重要的生命活动。外源性RGD肽与肿瘤细胞表面整和素结合后，可作为体内RGD肽类物质的竞争性抑制剂，从而能抑制肿瘤细胞与细胞外基质的黏附与迁移、抑制肿瘤血管形成、诱导肿瘤细胞凋亡，且具有靶向性标记肿瘤显像以及与其他方法联合治疗肿瘤的潜在价值。结论 RGD肽能从多个环节对肿瘤起到抑制作用，且展示出与其他疗法联合治疗肿瘤的前景。

Research Advances on RGD Peptides in Diagnosis and Treatment of Neoplasms

Objective To introduce the current research status, value and development future of Arg-Gly-Asp (RGD) peptides in diagnosis and treatment of neoplasms. Methods The current literatures on advances about RGD peptides in diagnosis and treatment of neoplasms were reviewed. Results RGD peptides, specificly recognizing and combining with integrin receptors, exist in extracellular matrix (ECM) of many kinds of organisms. After combining with integrin receptors, extrinsic RGD peptides can prevent tumor cells from adhering to ECM and migrating as the competitive inhibitor of intrinsic RGD peptides, suppress agiogenesis and induce tumor cells apoptosis, showing potential value of tumor specific imaging by targetal labelling neoplasms and treating tumors combining with other methods.Conclusion RGD peptides may be a new drug for diagnosis and treatment of neoplasms.