Cited by 18Nanoplatforms for cancer theranosticsRadiation Therapy and DosimetryCancer Immunotherapy and Biomarkers

Cancer cell membrane-coated siRNA-Decorated Au/MnO2 nanosensitizers for synergistically enhanced radio-immunotherapy of breast cancer

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Wang, Diyu, Lin, Subin, Li, Tuanwei, Yang, Xiaohu, Zhong, Xiang, Chen, Qian, Jiang, Guoqin, Li, Chunyan·2024·Materials Today Bio

Abstract

Radiotherapy plays a critical role in the clinical treatment of breast cancer. However, the efficacy of traditional X-ray radiotherapy is greatly limited by its low tumor specificity and treatment tolerance mediated by the tumor microenvironment. Herein, we proposed a novel nano-radiotherapy sensitization strategy to design and construct a cancer cell membrane-coated siRNA-decorated Au/MnO 2 nanosensitizer (R&F@Au/MnO 2 -CM) to synergistically enhance radio-immunotherapy for breast cancer. In the integrated nanosensitizer, the cancer cell membrane (CM) derived from 4T1 breast cancer cells is utilized for targeted functionality, while Au/MnO 2 is designed to improve X-ray absorption and alleviate tumor hypoxia. Additionally, PD-L1 siRNA (R) is used to downregulate PD-L1 expression in tumor cells. In an in situ mouse model of 4T1 breast cancer, R&F@Au/MnO 2 -CM demonstrated accurate tumor identification via CM-mediated homologous targeting after intravenous injection, which was monitored in real-time through NIR-II fluorescence imaging of NIR-935 (F). Subsequently, the radiotherapy sensitivity was achieved due to the strong radiation absorption properties and oxygen generation through catalysis of Au/MnO 2 upon X-ray irradiation. Furthermore, the immunosuppressive microenvironment of the tumor is improved by downregulating PD-L1, enhancing synergistic anti-tumor effect. Our findings demonstrate a promising approach for tumor treatment by combining targeted enhanced radiotherapy with immune activation.

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  • Biomimetic strategies, including cell membrane-coated nanoparticles, were reported to enhance circulation time and immune evasion.

    “Biomimetic strategies, including cell membrane-coated nanoparticles, were reported to enhance circulation time and immune evasion [34,44,50,56].”

    From Nanoparticle-Mediated Radiosensitization in Breast Cancer: A Systematic Review of Preclinical Evidence and Translational Challenges (2026) · cites this paper as [56]

    The Results and discussion section (‘In vivo homologous targeting and anti-tumor efficiency’; page unavailable) reports a 3.79-hour blood half-life for the cell membrane-coated nanosensitizer and calls its circulation characteristics favorable. It does not show that membrane coating increased circulation time relative to an uncoated comparator or that the nanoparticles evaded immune clearance. Its discussion of immune evasion concerns tumor-cell PD-L1, not nanoparticle immune evasion. (LLM, conf=0.82)

    Experimental — accuracy not yet measured
  • Immune-modulating strategies, including checkpoint-related approaches, were described in combination with radiotherapy in selected nanoplatforms.

    “Immune-modulating strategies, including checkpoint-related approaches, were described in combination with radiotherapy in selected nanoplatforms [17,21,23,26,39,56].”

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Authors
Wang, D., Lin, S., Li, T., Yang, X., Zhong, X., Chen, Q., Jiang, G., & Li, C.
Affiliations
  • Chinese Academy of Sciences (CN)
  • Second Affiliated Hospital of Soochow University (CN)
  • University of Science and Technology of China (CN)
Corresponding author
  • Jiang, Guoqin
  • Li, Chunyan
Venue
Materials Today Bio
Publisher
Elsevier BV
Published
2024-12
Volume
29
Pages
101275
ISSN
2590-0064 (ISSN-L)
OpenAlex
W4402878349
Cited by
18
References
67
Citations by year
2026: 6 · 2025: 12
FWCI
1.98
Type
journal article
Language
en
Open access
Locations
  • Materials Today Bio (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
National Key Research and Development Program of China Stem Cell and Translational Research
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Nanoplatforms for cancer theranostics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Radiation Therapy and Dosimetry
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
Keywords
breast cancer, radioimmunotherapy, cancer cell membrane coating, tumor hypoxia, X-ray absorption, NIR-II fluorescence imaging, tumor microenvironment, 4T1 cells, targeted drug delivery, oxygen production

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