Specific chimeric antigen receptor cell armed with targeted CXCR2 ligand as well as preparation method and application thereof

The invention relates to a specific chimeric antigen receptor cell armed with a targeted CXCR2 ligand as well as a preparation method and application thereof. Through a method, which uses a recombinant carrier of a chimeric antigen receptor that specifically targets human NKG2DL armed with a targeting CXCR2 ligand to modify a immune response cell, the obtained novel functionalized immune responsecell can effectively attack multiple tumors in a targeted mode; and the functionalized immune response cell can be used to prepare preparations for treating malignant tumors. The engineering immune cells modified by a chimeric antigen receptor that is armed with a targeting CXCR2 ligand and specifically targets human NKG2DL can more easily migrate to a tumor position and continuously kill the tumors in a targeted mode. 本发明涉及一种武装靶向CXCR2配体的特异性嵌合抗原受体细胞及其制备方法和应用。本发明通过武装靶向CXCR2配体的特异性靶向人NKG2DL的嵌合抗原受体的重组载体，并用其修饰免疫应答细胞的方法；获得的新型功能化免疫应答细胞能有效地靶向攻击多种肿瘤，及制备的用于治疗恶性肿瘤的制剂。本发明的武装靶向CXCR2配体的特异性靶向人NKG2DL的嵌合抗原受体修饰的工程免疫细胞更加容易迁移至肿瘤部位，持续靶向杀伤