ArticleInvestigative and clinical urology2024
Prostate cancer therapy using immune checkpoint molecules to target recombinant dendritic cells.
Article in Investigative and clinical urology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Dendritic cells: understanding ontogeny, subsets, functions, and their clinical applications.Molecular biomedicine · 2025Review
- PDK4 expression and tumor aggressiveness in prostate cancer.Investigative and clinical urology · 2025Article
- Arthritis increases the risk of prostate cancer: Results from the National Health and Nutrition Examination Survey 2005-2018 and two-sample Mendelian randomization analysis.Investigative and clinical urology · 2025Article
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Authors and funding
6 authors.
Funding
Abstract
purposeWe developed immune checkpoint molecules to target recombinant dendritic cells (DCs) and verified their anti-tumor efficacy and immune response against prostate cancer. MATERIALS AND
methodsDCs were generated from mononuclear cells in the tibia and femur bone marrow of mice. We knocked down the programmed death ligand 1 (PD-L1) on monocyte-derived DCs through siRNA PD-L1. Cell surface antigens were immune fluorescently stained through flow cytometry to analyze cultured cell phenotypes. Furthermore, we evaluated the efficacy of monocyte-derived DCs and recombinant DCs in a prostate cancer mouse model with subcutaneous TRAMP-C1 cells. Lastly, DC-induced mixed lymphocyte and lymphocyte-only proliferations were compared to determine cultured DCs' function.
resultsCompared to the control group, siRNA PD-L1 therapeutic DC-treated mice exhibited significantly inhibited tumor volume and increased tumor cell apoptosis. Remarkably, this treatment substantially augmented interferon-gamma and interleukin-2 production by stimulating T-cells in an allogeneic mixed lymphocyte reaction. Moreover, we demonstrated that PD-L1 gene silencing improved cell proliferation and cytokine production.
conclusionsWe developed monocyte-derived DCs transfected with PD-L1 siRNA from mouse bone marrow. Our study highlights that PD-L1 inhibition in DCs increases antigen-specific immune responses, corroborating previous immunotherapy methodology findings regarding castration-resistant prostate cancer.
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