Related Experiment Video
Updated: Aug 5, 2026
10:04
Tractable In Vivo Reprogramming of Tumor Cells to Type 1 Conventional Dendritic Cell-like Cells
Published on: August 1, 2025
Programmable immune activation and antitumor efficacy enabled by spatially encoded biomimetic framework nucleic acids
Jingmei Pan1, Jiaoyang Wang1,2, Aohan Zhang1
1Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu 610031, China. xingguo@swjtu.edu.cn.
Journal of Materials Chemistry. B
|August 3, 2026
Summary
This study introduces novel 3D framework nucleic acids (FNAs) for precise immune modulation. These biomimetic materials enhance T cell responses and tumor suppression by controlling nanoscale spatial organization of immune signals.
Area of Science:
- Biomaterials Science
- Immunology
- Nanotechnology
Background:
- Biomimetic materials offer precise immune modulation by mimicking natural architectures.
- Controlling immune functions via nanoscale spatial organization is a key challenge.
Purpose of the Study:
- To develop 3D framework nucleic acids (FNAs) for programmable immune response regulation.
- To investigate the role of geometric configuration in immune modulation.
Main Methods:
- Constructed tetrahedral, triangular prism, and cubic FNAs for ordered co-presentation of antigens and immunoadjuvants.
- Assessed cellular uptake, dendritic cell (DC) maturation, and immune cell activation in vitro and in vivo.
- Investigated the mechanism of spatial encoding-driven receptor clustering.
Main Results:
- Geometric configuration of FNAs significantly modulated cellular uptake and DC maturation.
- Cubic FNAs demonstrated superior cellular internalization and antigen cross-presentation.
- The biomimetic system enhanced CD8+ T cell activation, reshaped the tumor immune microenvironment, suppressed tumors, and improved survival.
Conclusions:
- Introduced a structure-information-driven biomimetic immunomodulation strategy using FNAs.
- Demonstrated the potential of geometrically controlled FNAs for developing advanced nanovaccines and immunotherapeutics.
Related Concept Videos
01:27Tumor Immunotherapy
Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
01:27Cytotoxic T Cells-mediated Immune Response
Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...