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CHEN Hong, HU Xiang, ZHANG Hui-yuan, et al. Induction and Anti-Tumor Function of Tertiary Lymphoid Organs[J]. Journal of Sichuan University (Medical Sciences), 2022, 53(1): 35-42. DOI: 10.12182/20220160102
Citation: CHEN Hong, HU Xiang, ZHANG Hui-yuan, et al. Induction and Anti-Tumor Function of Tertiary Lymphoid Organs[J]. Journal of Sichuan University (Medical Sciences), 2022, 53(1): 35-42. DOI: 10.12182/20220160102

Induction and Anti-Tumor Function of Tertiary Lymphoid Organs

  •   Objective  To induce the development of tertiary lymphoid organs (TLO) in a mouse model of melanoma and to evaluate TLO’s functions in antitumor immunity.
      Methods  Lymphotoxin-beta receptor (LTβR) was overexpressed in NIH3T3 cells through the lentivirus system and the overexpression efficiency of LTβR in LTβR-NIH3T3 cells was examined. Western blot and qPCR were used to examine the non-canonical nuclear factor (NF)-κB signaling pathway in NIH3T3 cells overexpressing LTβR. B16-OVA melanoma mouse model was constructed to explore the induction of TLO and anti-tumor functions of TLO in LTβR-NIH3T3 cells.
      Results  LTβR was overexpressed in NIH3T3 cells through the lentivirus system, and flow cytometry showed that the proportion of GFP+ cells reached 99%. The overexpression of LTβR activated the non-canonical NF-κB signaling pathway in NIH3T3 cells. Findings from the mouse tumor model suggest that the injection of LTβR-NIH3T3 cells successfully induced the development of lymphoid tissue around the tumor and enhanced the tumor infiltration of T cells and MHCⅡ+ macrophages, significantly inhibiting tumor growth and prolonging the survival of tumor-bearing mice.
      Conclusion  LTβR-NIH3T3 cells promoted anti-tumor immunity by inducing TLO development, which may provide new perspectives for tumor immunotherapy.
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