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Paramyxoviruses for Tumor-targeted Immunomodulation: Design and Evaluation Ex Vivo
Published on: January 7, 2019
Mechanotransduction-Piloted Whole-Cell Vaccines for Spatiotemporal Modulation of Postoperative Antitumor Immunity
Yuan Gu1, Pei Xu1, Yanxian Wu1
1State Key Laboratory 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.
Abstract:
Whole tumor cell vaccines hold promise by presenting a broader spectrum of autologous-origin tumor antigens to combat postoperative recurrence and metastasis. However, challenges such as intractable adjuvant modification and obscure interactions with antigen-presenting cells in the postoperative microenvironment impede their translation into effective personalized immunotherapies. In this study, we propose cancer vaccines derived from manganese oxide-immobilized resected tumor cells, featuring whole tumor antigens and adjustable stiffness to modulate interactions with antigen-presenting cells in the postoperative microenvironment. These vaccines effectively stimulate dendritic cell phagocytosis and function through sequential stiffness-mediated mechanotransduction and interferon signaling. We evaluated their efficacy using an orthotopic triple-negative breast cancer mouse model and found that combining the vaccines with radiotherapy effectively inhibits postoperative tumor recurrence and metastasis. Our study underscores the potential of utilizing mechanotransduced adjuvants alongside directly inactivated whole-cell vaccines as a universal solution for preventing postoperative tumor recurrence.
Insights
This study introduces novel cancer vaccines using resected tumor cells immobilized on manganese oxide. These vaccines, with adjustable stiffness, effectively prevent postoperative tumor recurrence and metastasis in a mouse model.
Area of Science:
- Oncology
- Immunology
- Biomaterials Science
Background:
- Whole tumor cell vaccines offer broad antigen presentation for cancer immunotherapy.
- Challenges include adjuvant modification and understanding interactions within the tumor microenvironment.
Purpose of the Study:
- To develop a novel whole tumor cell vaccine strategy using manganese oxide-immobilized cells.
- To modulate antigen-presenting cell interactions via adjustable vaccine stiffness.
- To investigate the efficacy of these vaccines in preventing postoperative tumor recurrence and metastasis.
Main Methods:
- Manganese oxide immobilization of resected tumor cells.
- Tuning vaccine stiffness to influence antigen-presenting cell interactions.
- Evaluation in an orthotopic triple-negative breast cancer mouse model.
- Combination therapy with radiotherapy.
Main Results:
- Vaccines effectively stimulated dendritic cell phagocytosis and function.
- Stiffness-mediated mechanotransduction and interferon signaling pathways were activated.
- Combination therapy significantly inhibited postoperative tumor recurrence and metastasis.
- Demonstrated a universal approach for preventing postoperative tumor recurrence.
Conclusions:
- Manganese oxide-immobilized whole tumor cell vaccines represent a promising strategy for cancer immunotherapy.
- Adjustable stiffness is a key factor in modulating immune cell interactions.
- This approach holds potential for personalized cancer treatment and preventing disease relapse.
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