分子靶向-过继性细胞免疫治疗是分子靶向药物和过继性细胞免疫疗法有机结合的新治疗模式,该模式建立在NK细胞活化性信号通路(NKG2D-NKG2DLs)的生物学特性,尤其是受配体可调控性的理论基础之上。分子靶向药物在其中扮演双重角色,除了药...分子靶向-过继性细胞免疫治疗是分子靶向药物和过继性细胞免疫疗法有机结合的新治疗模式,该模式建立在NK细胞活化性信号通路(NKG2D-NKG2DLs)的生物学特性,尤其是受配体可调控性的理论基础之上。分子靶向药物在其中扮演双重角色,除了药物本身对肿瘤细胞的毒性作用外,还作为"刺激诱导"源,诱导肿瘤细胞表达免疫激活物NKG2DLs(nat-ural killer group 2 member D ligands),与NK细胞表面NKG2D(natural killer group 2 member D)结合,激活NK细胞的杀伤活性。NKG2D与NKG2DLs是NK细胞主要的活化性受、配体,在机体抗肿瘤免疫中起重要作用。NKG2D主要表达于NK、CD8+T、γδT和活化的巨噬细胞,参与适应性及固有性免疫应答。与NKG2D结合的配体(NKG2DLs)广泛低表达于多种肿瘤细胞,而在正常组织细胞几乎未见表达,靶细胞的NKG2DLs表达水平直接关系到免疫效应细胞(NK、DC、CTL细胞等)对其的杀伤活性。NKG2DLs的转录与表达可受多种因素影响,分子靶向药物可以诱导肿瘤细胞高表达NKG2DLs,NK细胞对高表达NKG2DLs的肿瘤细胞有较高杀伤活性,而对正常组织无杀伤作用,具有杀伤靶向性;NKG2DLs的高表达也增强了肿瘤细胞对其他免疫效应细胞的杀伤敏感性,具有良好的应用前景。分子靶向药物联合过继性细胞免疫治疗将使肿瘤患者获得更好的临床疗效,预示了肿瘤生物治疗新的发展方向———分子靶向-过继性细胞免疫治疗新模式的来临。展开更多
To better understand the pathogenesis of Sézary cells, distinguish them from reactive skin-infltrating T-cells and improve disease treatment, efforts have been made to identify molecular targets deregulated by th...To better understand the pathogenesis of Sézary cells, distinguish them from reactive skin-infltrating T-cells and improve disease treatment, efforts have been made to identify molecular targets deregulated by the malignant process. From immunophenotypic analysis and subtractive differential expression experiments to pan-genomic studies, many approaches have been used to identify markers of the disease. During the last decade several natural killer （NK） cell markers have been found aberrantly expressed at the surface of Sézary cells. In particular, KIR3DL2/CD158k, expressed by less than 2% of healthy individuals CD4＋ T-cells, is an excellent marker to identify and follow the tumor burden in the blood of Sézary syndrome patients. It may also represent a valuable target for specifc im-munotherapy. Other products of the NK cluster on chromosome 19q13 have been detected on Sézary cells, raising the hypothesis of an NK reprogramming process associated with the malignant transformation that may induce survival functions.展开更多
文摘分子靶向-过继性细胞免疫治疗是分子靶向药物和过继性细胞免疫疗法有机结合的新治疗模式,该模式建立在NK细胞活化性信号通路(NKG2D-NKG2DLs)的生物学特性,尤其是受配体可调控性的理论基础之上。分子靶向药物在其中扮演双重角色,除了药物本身对肿瘤细胞的毒性作用外,还作为"刺激诱导"源,诱导肿瘤细胞表达免疫激活物NKG2DLs(nat-ural killer group 2 member D ligands),与NK细胞表面NKG2D(natural killer group 2 member D)结合,激活NK细胞的杀伤活性。NKG2D与NKG2DLs是NK细胞主要的活化性受、配体,在机体抗肿瘤免疫中起重要作用。NKG2D主要表达于NK、CD8+T、γδT和活化的巨噬细胞,参与适应性及固有性免疫应答。与NKG2D结合的配体(NKG2DLs)广泛低表达于多种肿瘤细胞,而在正常组织细胞几乎未见表达,靶细胞的NKG2DLs表达水平直接关系到免疫效应细胞(NK、DC、CTL细胞等)对其的杀伤活性。NKG2DLs的转录与表达可受多种因素影响,分子靶向药物可以诱导肿瘤细胞高表达NKG2DLs,NK细胞对高表达NKG2DLs的肿瘤细胞有较高杀伤活性,而对正常组织无杀伤作用,具有杀伤靶向性;NKG2DLs的高表达也增强了肿瘤细胞对其他免疫效应细胞的杀伤敏感性,具有良好的应用前景。分子靶向药物联合过继性细胞免疫治疗将使肿瘤患者获得更好的临床疗效,预示了肿瘤生物治疗新的发展方向———分子靶向-过继性细胞免疫治疗新模式的来临。
基金the Inserm, Société de Recherches Dermatologiques (SRD C.S), and Société Franaise de Dermatologie (SFD A.M-C) for their support as well as the European Union through the Euro-Trans-Bio grant (M.B and A.B)
文摘To better understand the pathogenesis of Sézary cells, distinguish them from reactive skin-infltrating T-cells and improve disease treatment, efforts have been made to identify molecular targets deregulated by the malignant process. From immunophenotypic analysis and subtractive differential expression experiments to pan-genomic studies, many approaches have been used to identify markers of the disease. During the last decade several natural killer （NK） cell markers have been found aberrantly expressed at the surface of Sézary cells. In particular, KIR3DL2/CD158k, expressed by less than 2% of healthy individuals CD4＋ T-cells, is an excellent marker to identify and follow the tumor burden in the blood of Sézary syndrome patients. It may also represent a valuable target for specifc im-munotherapy. Other products of the NK cluster on chromosome 19q13 have been detected on Sézary cells, raising the hypothesis of an NK reprogramming process associated with the malignant transformation that may induce survival functions.
