ArticleJournal for immunotherapy of cancer2021
Pathways of immune exclusion in metastatic osteosarcoma are associated with inferior patient outcomes.
Article in Journal for immunotherapy of cancer, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 83 papers, 1 of them a synthesis that pooled it.
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Who cites it
83 citing papers in PubMed, 1 synthesis or guideline pooled it, 116 citations in OpenAlex.
- From mechanism to therapy: advances in macrophage polarisation and targeted intervention in osteosarcoma.Frontiers in immunology · 2026Pooled it
- Bone niche-driven antitumor immune failure in osteosarcoma: Mechanisms and therapeutic implications (Review).Oncology letters · 2026Review
- Targeting Regnase-1 in B7-H3-CAR T cells reprograms the tumor microenvironment and enhances antitumor efficacy for osteosarcoma.Cell reports. Medicine · 2026Article
- The Osteosarcoma Tumor Microenvironment: From Cellular Interactions to Advanced Preclinical Models.Cancers · 2026Review
- A single-molecule prodrug synergistically suppresses MYC-amplified osteosarcoma through sequential nitric oxide release and photodynamic therapy.Smart molecules : open access · 2026Article
- Precision nanomedicine for lung metastatic osteosarcoma: challenges, therapeutic strategies, and perspectives.Materials today. Bio · 2026Review
- Engineering Osteoimmune Responses with Functionalized Orthopedic Implants for Post-Operative Osteosarcoma Treatment.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Review
- An international framework for clinical translation of molecular classifiers in osteosarcoma.NPJ precision oncology · 2026Article
- Spatial transcriptomic mapping of canine osteosarcoma reveals immune microenvironment features linked to survival.Communications biology · 2026Article
- A conceptual blueprint for "turning cold to hot" in Osteosarcoma: from TME stratification hypotheses to adaptive therapeutic prospects.Cell communication and signaling : CCS · 2026Review
- Review
- Multifunctional nanoplatforms deciphering immune resistance in bone tumors: cooperative delivery, immune reprogramming and microenvironment remodeling.Journal of nanobiotechnology · 2026Review
- Advances in T cell-based immunotherapy for osteosarcoma.Frontiers in immunology · 2026Review
- Immune exclusion as a recurrent immune-escape state driving treatment resistance in osteosarcoma: insights from single-cell, spatial, and multi-omics studies.Frontiers in immunology · 2026Review
- Single-Cell Transcriptomic Profiling Reveals Cellular Heterogeneity and Identifies Novel Therapeutic Targets in Osteosarcoma.International journal of genomics · 2026Article
- Advancements in research regarding the influence of the tumor microenvironment on the proliferation and metastasis of osteosarcoma (Review).Oncology letters · 2026Review
- Osteosarcoma as a communication-driven disease: redefining tumor-bone signaling networks as therapeutic targets.Frontiers in oncology · 2026Review
- Nutritional biomarkers regulating tumor immune microenvironment in osteosarcoma and as predictors of immune checkpoint inhibitor responses.Frontiers in immunology · 2026Review
- Genetic and chromosomal dysregulations of progenitor cells in the etiology and pathogenesis of pediatric cancers.American journal of stem cells · 2026Review
- A Spatiotemporal Model of CXCL10 as a Master Regulator of Immune Evasion and Metastasis in Osteosarcoma.International journal of molecular sciences · 2025Review
23 more citing papers are in PubMed but not listed here.
Corrections and comments
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Authors and funding
23 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundCurrent therapy for osteosarcoma pulmonary metastases (PMs) is ineffective. The mechanisms that prevent successful immunotherapy in osteosarcoma are incompletely understood. We investigated the tumor microenvironment of metastatic osteosarcoma with the goal of harnessing the immune system as a therapeutic strategy.
methods66 osteosarcoma tissue specimens were analyzed by immunohistochemistry (IHC) and immune markers were digitally quantified. Tumor-infiltrating lymphocytes (TILs) from 25 specimens were profiled by functional cytometry. Comparative transcriptomic studies of distinct tumor-normal lung 'PM interface' and 'PM interior' regions from 16 PMs were performed. Clinical follow-up (median 24 months) was available from resection.
resultsIHC revealed a statistically significantly higher concentration of TILs expressing immune checkpoint and immunoregulatory molecules in PMs compared with primary bone tumors (including programmed cell death 1 (PD-1), programmed death ligand 1 (PD-L1), lymphocyte-activation gene 3 (LAG-3), T-cell immunoglobulin and mucin domain-containing protein 3 (TIM-3), and indoleamine 2,3-dioxygenase (IDO1). Remarkably, these lymphocytes are excluded at the PM interface compared with PM interior. TILs from PMs exhibited significantly higher amounts of PD-1 and LAG-3 and functional cytokines including interferon-γ (IFNγ) by flow cytometry. Gene expression profiling further confirmed the presence of CD8 and CD4 lymphocytes concentrated at the PM interface, along with upregulation of immunoregulatory molecules and IFNγ-driven genes in the same region. We further discovered a strong alternatively activated macrophage signature throughout the entire PMs along with a polymorphonuclear myeloid-derived suppressor cell signature focused at the PM interface. Expression of PD-L1, LAG-3, and colony-stimulating factor 1 receptor (CSF1R) at the PM interface was associated with significantly worse progression-free survival (PFS), while gene sets indicative of productive T cell immune responses (CD8 T cells, T cell survival, and major histocompatibility complex class 1 expression) were associated with significantly improved PFS.
conclusionsOsteosarcoma PMs exhibit immune exclusion characterized by the accumulation of TILs at the PM interface. These TILs produce effector cytokines, suggesting their capability of activation and recognition of tumor antigens. Our findings suggest cooperative immunosuppressive mechanisms in osteosarcoma PMs including immune checkpoint molecule expression and the presence of immunosuppressive myeloid cells. We identify cellular and molecular signatures that are associated with patient outcomes, which could be exploited for successful immunotherapy.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.