细胞外囊泡中KRAS反义寡核苷酸(ASO)与维甲酸诱导基因I(RIG-I)激动剂的联合应用可将肿瘤微环境转变为对KRAS依赖性癌症的有效治疗。

Combination of KRAS ASO and RIG-I agonist in extracellular vesicles transforms the tumor microenvironment towards effective treatment of KRAS-dependent cancers.

作者信息

Phung Cao Dai, Tran Trinh T T, Yeo Brendon Zhi Jie, Prajogo Rebecca Carissa, Saudjana Evelyn, Yeo Eric Yew Meng, Gao Chang, Nguyen Phuong H D, Jayasinghe Migara Kavishka, Dang Xuan T T, Lixuan Celest Phang, Nguyen Trinh Mai, Peng Boya, Le Anh Hong, Nguyen Tram T T, Chan Gloria Mei En, Loh Yuin-Han, Goh Boon Cher, Tam Wai Leong, Bonney Glenn Kunnath, Luo Dahai, Le Minh T N

机构信息

Department of Pharmacology and Institute for Digital Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.

Vingroup Science and Technology Scholarship Program, Vin University, Hanoi, Vietnam.

出版信息

Theranostics. 2025 Jun 9;15(14):6818-6838. doi: 10.7150/thno.105519. eCollection 2025.

Abstract

: Mutations in the gene drive many cancers, yet targeting mutants remains a challenge. Here, we address this hurdle by utilizing a nucleic acid-based therapeutic strategy delivered via extracellular vesicles (EVs) to simultaneously inhibit mutants and activate the RIG-I pathway, aiming to enhance anti-tumor immunity. : Antisense oligonucleotides against mutants ( ASOs) and RIG-I agonist immunomodulatory RNA (immRNA) were loaded into EVs and administered to -mutant cancer models. The therapeutic effects were assessed in colorectal and non-small cell lung cancer (NSCLC) tumor models, as well as patient-derived pancreatic cancer organoids. Immune responses were evaluated by analyzing tumor microenvironment's changes, dendritic cell activation, and T cell memory formation. The treatment efficacy was evaluated based on the tumor development and overall survival. : The KRAS-ASO and immRNA combination treatment induced immunogenic tumor cell death and upregulated interferons in -dependent cancers. In a colorectal tumor model, the therapy shifted the tumor microenvironment to an immunogenic state, activated dendritic cells in sentinel lymph nodes, and promoted memory T cell formation. In an aggressive NSCLC model, the treatment resulted in a strong anti-tumor activity and extended survival without any adverse effects. Validation in patient-derived pancreatic cancer organoids confirmed the clinical translation potential of this approach. : EV-mediated delivery of ASOs and immRNA effectively inhibits mutants and activates RIG-I, leading to a robust anti-tumor immune response. This strategy holds promise for effectively treating -driven cancers and improving clinical outcomes.

摘要

:该基因的突变引发了许多癌症,但靶向该基因突变体仍然是一项挑战。在此,我们通过利用一种基于核酸的治疗策略来克服这一障碍,该策略通过细胞外囊泡(EVs)递送,以同时抑制该基因突变体并激活RIG-I通路,旨在增强抗肿瘤免疫力。:针对该基因突变体的反义寡核苷酸(ASOs)和RIG-I激动剂免疫调节RNA(immRNA)被载入细胞外囊泡并应用于携带该基因突变的癌症模型。在结直肠癌和非小细胞肺癌(NSCLC)肿瘤模型以及患者来源的胰腺癌类器官中评估治疗效果。通过分析肿瘤微环境的变化、树突状细胞激活和T细胞记忆形成来评估免疫反应。根据肿瘤发展和总生存期评估治疗疗效。:KRAS-ASO和immRNA联合治疗在依赖该基因的癌症中诱导了免疫原性肿瘤细胞死亡并上调了干扰素。在结直肠癌肿瘤模型中,该疗法将肿瘤微环境转变为免疫原性状态,激活了前哨淋巴结中的树突状细胞,并促进了记忆T细胞形成。在侵袭性NSCLC模型中,该治疗产生了强烈的抗肿瘤活性并延长了生存期,且无任何不良反应。在患者来源的胰腺癌类器官中的验证证实了该方法的临床转化潜力。:EV介导的ASOs和immRNA递送有效抑制该基因突变体并激活RIG-I,导致强大的抗肿瘤免疫反应。该策略有望有效治疗由该基因驱动的癌症并改善临床结果。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c7bd/12203666/f388460b1534/thnov15p6818g001.jpg

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