SCI
4 October 2024
In vivo dendritic cell reprogramming for cancer immunotherapy
(Science, IF: 44.7)
Ervin Ascic, Fritiof Akerstroms, Malavika Sreekumar Nair, André Rosa, llia Kurochkin, Olga Zimmermannova, Xavier Catena. Nadezhda Rotankova, Charlotte Veser, Michal Rudnik. Tommaso Ballocei, Tiffany Scharer, Xiaoli Huang, Mariade Rosa Torres, Emilie Renaud, Marta Velasco Santiago, Ozcan Met, David Askmyr, Malin Lindstedt, Lennart Greiff, Laure-Anne Ligeon, Irina Agarkova, Inge Marie Svane, Cristiana F, Piress, Fábio F. Rosa, Carlos-Filive Pereira
Correspondence to: filipe.pereira@med.lu.se
Immunotherapy can lead to long-term survival for some cancer patients, yet generalized success has been hampered by insufficient antigen presentation and exclusion of immunogenic cells from the tumor microenvironment. Here, we developed an approach to reprogram tumor cells in vivo by adenoviral delivery of the transcription factors PU.1, IRF8, and BATF3, which enabled them to present antigens as type 1 conventional dendritic cells. Reprogrammed tumor cells remodeled their tumor microenvironment, recruited and expanded polyclonal cytotoxic T cells, induced tumor regressions, and established long-term systemic immunity in multiple mouse melanoma models. In human tumor spheroids and xenografts, reprogramming to immunogenic dendritic-like cells progressed independently of immunosuppression, which usually limits immunotherapy. Our study paves the way for human clinical trials of in vivo immune cell reprogramming for cancer immunotherapy.
免疫治疗可以为一些癌症患者带来长期生存,但其广泛的成功仍受到抗原呈递不足和免疫原性细胞被排除在肿瘤微环境之外的限制。在此,我们开发了一种通过腺病毒递送转录因子PU.1、IRF8和BATF3在体内重编程肿瘤细胞的方法,使其能够像1型常规树突状细胞一样呈递抗原。重编程的肿瘤细胞重塑了肿瘤微环境,招募并扩展了多克隆细胞毒性T细胞,诱导肿瘤缩小,并在多个小鼠黑色素瘤模型中建立了长期系统免疫。在人类肿瘤类球体和异种移植模型中,重编程后成为免疫原性树突状细胞的过程独立于免疫抑制,这通常限制免疫治疗。我们的研究为人类临床试验提供了基础,探索在癌症免疫治疗中进行体内免疫细胞重编程的可能性。
这篇文章主要讨论了体内树突状细胞的重新编程在癌症免疫治疗中的应用。研究者提出了一种新的方法,通过重新编程树突状细胞,增强其激活免疫反应的能力,从而更有效地对抗癌症。
这篇文章的重点内容重新整理如下:
1. 研究背景:树突状细胞在启动和调控免疫反应中扮演着重要角色,但在肿瘤微环境中,树突状细胞功能常被抑制,限制了其抗癌能力。重新激活树突状细胞,提升其免疫反应能力,成为癌症免疫治疗的新思路。
2. 研究方法:研究者开发了一种体内重新编程树突状细胞的方法,利用特定的信号分子组合,恢复这些细胞的免疫功能,增强其识别和杀灭癌细胞的能力。
3. 研究结果:重新编程后的树突状细胞能够有效激活T细胞,增强免疫系统对肿瘤的识别与攻击。在多种癌症模型中,这种方法显著抑制了肿瘤生长并延长了实验动物的生存时间。
4. 应用前景:该方法展现出作为癌症免疫疗法的巨大潜力,尤其适用于对现有治疗方法耐药的癌症类型,有望为癌症治疗提供新的突破。