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Cholesterol-modified DP7 enhances the effect of individualized cancer immunotherapy based on neoantigens.
Biomaterials ( IF 12.8 ) Pub Date : 2020-02-11 , DOI: 10.1016/j.biomaterials.2020.119852 Rui Zhang 1 , Lin Tang 1 , Yaomei Tian 1 , Xiao Ji 1 , Qiuyue Hu 1 , Bailing Zhou 1 , Ding Zhenyu 2 , Xu Heng 3 , Li Yang 1
Biomaterials ( IF 12.8 ) Pub Date : 2020-02-11 , DOI: 10.1016/j.biomaterials.2020.119852 Rui Zhang 1 , Lin Tang 1 , Yaomei Tian 1 , Xiao Ji 1 , Qiuyue Hu 1 , Bailing Zhou 1 , Ding Zhenyu 2 , Xu Heng 3 , Li Yang 1
Affiliation
Personalized cancer vaccines based on neoantigens have become an important research direction in cancer immunotherapy. However, their therapeutic effects are limited by the efficiency of antigen uptake and presentation by antigen presenting cells. Here, the low-toxicity cholesterol-modified antimicrobial peptide (AMP) DP7 (DP7-C), which has dual functions as a carrier and an immune adjuvant, improved the dendritic cell (DC)-based vaccine efficacy. As a delivery carrier, DP7-C can efficiently delivery various antigen peptides into 75-95% of DCs via caveolin- and clathrin-dependent pathways. As an immune adjuvant, DP7-C can induce DC maturation and proinflammatory cytokine release via the TLR2-MyD88-NF-κB pathway and effectively increase antigen presentation efficiency. In addition, DP7-C enhanced the efficacy of DC-based individualized cancer immunotherapy and achieved excellent antitumor effects on mouse tumor models using the OVA antigen peptides and LL2-neoantigens. Excitingly, after DP7-C stimulation, the antigen uptake efficiency of monocytes-derived DCs (MoDCs) in patients with advanced lung cancer increased from 14-40% to 88-98%, the presentation efficiency increased from approximately 15% to approximately 65%, and the proportion of mature MoDCs increased from approximately 20% to approximately 60%. These findings suggest that our approach may be a potentially alternative strategy to produce cancer vaccines designed for individual patients.
中文翻译:
胆固醇修饰的DP7可增强基于新抗原的个体化癌症免疫疗法的效果。
基于新抗原的个性化癌症疫苗已成为癌症免疫治疗的重要研究方向。然而,它们的治疗效果受到抗原呈递细胞的抗原摄取和呈递效率的限制。在这里,具有双重作用的低毒胆固醇修饰的抗菌肽(AMP)DP7(DP7-C)作为载体和免疫佐剂,提高了基于树突细胞(DC)的疫苗效力。作为递送载体,DP7-C可以通过依赖小窝蛋白和网格蛋白的途径将各种抗原肽有效地递送到75-95%的DC中。作为免疫佐剂,DP7-C可通过TLR2-MyD88-NF-κB途径诱导DC成熟和促炎细胞因子释放,并有效提高抗原呈递效率。此外,DP7-C增强了基于DC的个体化癌症免疫治疗的功效,并使用OVA抗原肽和LL2-neoantigens对小鼠肿瘤模型实现了出色的抗肿瘤作用。令人兴奋的是,在DP7-C刺激后,晚期肺癌患者单核细胞衍生DC(MoDC)的抗原摄取效率从14-40%增加到88-98%,呈递效率从大约15%增加到大约65% ,而成熟MoDC的比例从大约20%增加到大约60%。这些发现表明,我们的方法可能是生产针对个别患者的癌症疫苗的潜在替代策略。晚期肺癌患者单核细胞衍生DC(MoDCs)的抗原摄取效率从14-40%增加到88-98%,呈递效率从大约15%增加到大约65%,成熟MoDCs的比例增加从大约20%到大约60%。这些发现表明,我们的方法可能是生产针对个别患者的癌症疫苗的潜在替代策略。晚期肺癌患者单核细胞衍生DC(MoDCs)的抗原摄取效率从14-40%增加到88-98%,呈递效率从大约15%增加到大约65%,成熟MoDCs的比例增加从大约20%到大约60%。这些发现表明,我们的方法可能是生产针对个别患者的癌症疫苗的潜在替代策略。
更新日期:2020-02-12
中文翻译:
胆固醇修饰的DP7可增强基于新抗原的个体化癌症免疫疗法的效果。
基于新抗原的个性化癌症疫苗已成为癌症免疫治疗的重要研究方向。然而,它们的治疗效果受到抗原呈递细胞的抗原摄取和呈递效率的限制。在这里,具有双重作用的低毒胆固醇修饰的抗菌肽(AMP)DP7(DP7-C)作为载体和免疫佐剂,提高了基于树突细胞(DC)的疫苗效力。作为递送载体,DP7-C可以通过依赖小窝蛋白和网格蛋白的途径将各种抗原肽有效地递送到75-95%的DC中。作为免疫佐剂,DP7-C可通过TLR2-MyD88-NF-κB途径诱导DC成熟和促炎细胞因子释放,并有效提高抗原呈递效率。此外,DP7-C增强了基于DC的个体化癌症免疫治疗的功效,并使用OVA抗原肽和LL2-neoantigens对小鼠肿瘤模型实现了出色的抗肿瘤作用。令人兴奋的是,在DP7-C刺激后,晚期肺癌患者单核细胞衍生DC(MoDC)的抗原摄取效率从14-40%增加到88-98%,呈递效率从大约15%增加到大约65% ,而成熟MoDC的比例从大约20%增加到大约60%。这些发现表明,我们的方法可能是生产针对个别患者的癌症疫苗的潜在替代策略。晚期肺癌患者单核细胞衍生DC(MoDCs)的抗原摄取效率从14-40%增加到88-98%,呈递效率从大约15%增加到大约65%,成熟MoDCs的比例增加从大约20%到大约60%。这些发现表明,我们的方法可能是生产针对个别患者的癌症疫苗的潜在替代策略。晚期肺癌患者单核细胞衍生DC(MoDCs)的抗原摄取效率从14-40%增加到88-98%,呈递效率从大约15%增加到大约65%,成熟MoDCs的比例增加从大约20%到大约60%。这些发现表明,我们的方法可能是生产针对个别患者的癌症疫苗的潜在替代策略。