인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
The use of immune checkpoint inhibitors (ICIs) is a potential immunotherapy strategy to prevent immune escape in cancer cells. However, low immune infiltration and low antigen presentation in the tumor microenvironment (TME) have led to ineffective ICI immunotherapy in clinical studies. Although intratumoral injection of Toll-like receptor 9 (TLR9) agonists was shown to improve the efficacy of ICIs by increasing the number of tumor-infiltrating lymphocytes (TILs), it has limited effects on metastatic or deep-seated tumors. To overcome this challenge, we developed CpG7909 (a TLR9 agonist) lipoplex using a cationic lipid formulation, which exhibited preferential accumulation in tumors and spleen following systemic administration, Combination immunotherapy with an anti-PD1 antibody and CpG7909 lipoplex significantly promoted the infiltration of CD8<sup>+</sup> T cells (> twofold) into the TME of the CT26 tumor animal model and effectively inhibited both deep-seated colorectal and metastatic lung tumors. Furthermore, the complete response (CR) rate of mice receiving concurrent therapy increased from 0 to 75% compared with that of those receiving anti-PD1 monotherapy. To our knowledge, this study is among the first to evaluate the combination of CpG7909 lipoplexes with anti-PD1 antibodies in the context of cancer immunotherapy. The findings suggest that this approach may convert the TME from an immunologically "cold" to "hot" state, thereby enhancing tumor suppression and potentially improving the response rate to ICIs.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
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