ArticleCell communication and signaling : CCS2025
PD-L1 positive platelets mediate resistance to immune checkpoint inhibitors in patients with colorectal cancer.
Article in Cell communication and signaling : CCS, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.
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Who cites it
15 citing papers in PubMed, 1 synthesis or guideline pooled it.
- ELISPOT as a Functional for Biomarker Study in Cancer Immunotherapy: Applications and Future Directions.International journal of molecular sciences · 2026Pooled it
- Towards liquid biopsy-based analysis of antitumour immunity.Nature reviews. Clinical oncology · 2026Review
- Colorectal Cancer: Epidemiology, Risk Factors, Signaling Pathways, Clinical Features, Screening, Diagnosis, and Management.MedComm · 2026Review
- Review
- Platelets as regulators of cancer immunity: mechanisms and therapeutic perspectives.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2026Review
- Piroctone olamine promotes BECN1 transcription and activates autophagy by targeting HDAC6 in colorectal cancer.Acta pharmacologica Sinica · 2026Article
- Tumor-derived CCL20 activates tumor-associated neutrophils, predicting good prognosis in endometrial cancer.Translational cancer research · 2026Article
- Platelet-Prostate cancer crosstalk driving disparities and therapeutic vulnerabilities.Discover oncology · 2026Review
- Platelet-neutrophil cooperation in cancer: mechanisms of metastatic niche formation and implications for prognostic stratification and therapy.Cellular oncology (Dordrecht, Netherlands) · 2026Review
- Organ-specific pre-metastatic and metastatic niches in colorectal cancer: "discrepancy in response to immune checkpoint inhibitors in liver and lung metastasis".Frontiers in immunology · 2026Review
- Bridging Immunity and Hemostasis: Technical Foundations of Platelet-Leukocyte Co-cultures.Methods in molecular biology (Clifton, N.J.) · 2026Article
- Potential of Platelet-Based Drug Delivery System for Treating Peritoneal Metastasis of Gastric Cancer.Cancer science · 2025Article
- LASSO-Driven Selection of Biochemical and Clinical Markers for Primary Resistance to PD-1 Inhibitors in Metastatic Melanoma.Medicina (Kaunas, Lithuania) · 2025Article
- Immunomodulation and Immunotherapy for Patients with Prostate Cancer: An Up-to-Date Review.Biomedicines · 2025Review
- From Spatial Patterns to Prognosis: Decoding Single-Cell Architecture in Cancer with Hyperplex Immunofluorescence Imaging.Journal of Cancer · 2025Review
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Authors and funding
13 authors.
Funding
Abstract
backgroundProgrammed cell death ligand 1 (PD-L1) expression on immune cells is correlated with the efficacy of immune checkpoint inhibitor (ICI) therapy in various types of cancer. Platelets are important components of the tumour microenvironment (TME) and are widely involved in the development of many types of cancer including colorectal cancer (CRC). However, the role of PD-L1 positive platelets in ICI therapy for CRC remains unknown. We hypothesized that PD-L1 positive platelets trigger and sustain CRC immunosuppression.
methodsThe functional depletion effects of PD-L1 positive platelets on TME and immune cells were measured via western blotting, immunofluorescence staining, qRT-PCR, ELISpot and flow cytometry. In vivo, CD274 knockout (KO), CD8a KO, platelet-specific KO (PF4-Cre-Hsp90b1
resultsWe found that PD-L1 positive platelets are correlated with a poor prognosis, CD8 + T cell exhaustion and serve as a novel noninvasive biomarker for predicting immunotherapy efficacy in patients with CRC. The transfer of PD-L1 from tumour cells to platelets in the TME depends on direct cell contact via the fibronectin-1/GPIbα/integrin α5β1 pathway. In turn, platelets can also induce PD-L1 expression on cancer cells. Animal experiments revealed that antiplatelet pharmacological agents and genetic knockout of platelets potentiated the antitumour effect of the PD-L1 mAb treatment in a CD8 + T cell dependent manner.
conclusionsOur data suggest that PD-L1 positive platelets suppress CD8 + T cell immunity. Clinical combination treatment with ICIs and antiplatelet agents may be an effective therapeutic strategy for treating CRC.
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