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Tumor-Resident Intracellular Bacteria Scavenger Activated In Situ Vaccines for Potent Cancer Photoimmunotherapy.
Adv Healthc Mater
January 2025
Department of Pharmaceutics, School of Pharmacy, Qingdao University, Qingdao, 266071, China.
In situ tumor vaccines, which utilize antigens generated during tumor treatment to stimulate a cancer patient's immune system, has become a potential field in cancer immunotherapy. However, due to the immunosuppressive tumor microenvironment (ITME), the generation of tumor antigens is always mild and not sufficient. Tumor-resident intracellular bacteria have been identified as a complete tumor microenvironment component to contribute to creating ITME.
View Article and Find Full Text PDFReduced irradiation exposure areas enhanced anti-tumor effect by inducing DNA damage and preserving lymphocytes.
Mol Med
December 2024
State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing, 100871, China.
Background: Partial stereotactic body radiation therapy (SBRT) targeting hypoxic regions of large tumors (SBRT-PATHY) has been shown to enhance the efficacy of tumor radiotherapy by harnessing the radiation-induced immune response. This approach suggests that reducing the irradiation target volume not only achieves effective anti-tumor effects but also minimizes damage to surrounding normal tissues. In this study, we evaluated the antitumor efficacy of reduced-tumour-area radiotherapy (RTRT) , and explored the relationship between tumor control and immune preservation and the molecular mechanisms underlying of them.
View Article and Find Full Text PDFAbscopal effect of focused ultrasound combined immunotherapy in animal solid tumor model: a systematic reviews and meta-analysis.
Front Immunol
December 2024
State Key Laboratory of Ultrasound in Medicine and Engineering, Chongqing Medical University, Chongqing, China.
Introduction: The abscopal effect, a systemic anti-tumor response triggered by localized treatment, has gained attention but remains poorly understood. This study evaluates the efficacy and consistency of focused ultrasound (FUS) combined with immunotherapy in inducing the abscopal effect.
Methods: A systematic review and meta-analysis were conducted on preclinical studies using solid tumor models.
Radiotherapy-immunomodulated nanoplatform triggers both hypoxic and normoxic tumor associated antigens generation for robust abscopal effect and sustained immune memory.
Biomaterials
May 2025
Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China. Electronic address:
Radiotherapy (RT) induced abscopal effect has garnered substantial attention, nevertheless, it is rarely observed in clinics, due to the tumor hypoxia-related radioresistance, inadequate immune stimulation, and immunosuppressive tumor microenvironment. Herein, we construct a radiotherapy-immunomodulated nanoplatform (THUNDER), which synergizes with RT and greatly triggers the generation of both hypoxic and normoxic tumor cells-derived tumor-associated antigens (TAAs), resulting in robust abscopal effect and sustained immune memory. THUNDER exhibits prolonged blood circulation and high tumor retention capacity.
View Article and Find Full Text PDFBacteria-based biohybrids for remodeling adenosine-mediated immunosuppression to boost radiotherapy-triggered antitumor immune response.
Biomaterials
May 2025
State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection & School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, China. Electronic address:
Radiotherapy (RT) can trigger immunogenic cell death (ICD) in tumor cells and release adenosine triphosphate (ATP) to activate antitumor immunity. However, the formation of immunosuppressive adenosine (ADO) mediated by ectonucleotidases including CD39 and CD73, can exacerbate the immunosuppressive effects. Herein, a radiosensitizer-based metal-organic framework (MOF) composed of bismuth (Bi) and ellagic acid (EA) was synthesized in situ on the surface of Escherichia coli Nissle 1917 (EcN) to serve as a carrier for the CD39 inhibitor sodium polyoxotungstate (POM-1).
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