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Related Concept Videos

Tumor Immunotherapy01:27

Tumor Immunotherapy

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Mesenchymal stem cells (MSCs) are adult stem cells that can differentiate into most connective tissue cell types, except for hematopoietic cells, depending upon the source of MSCs. For example, bone-marrow-derived MSCs (BM-MSCs) can differentiate into osteocytes, hepatocytes, and pancreatic and neuronal cells. MSCs can be isolated from various sources such as bone marrow, placenta, adipose tissue, teeth, and Wharton’s jelly, a gelatinous substance in the umbilical cord. The ease of their...
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Related Experiment Video

Updated: May 21, 2025

Analysis of Human T Cell Activity in an Allogeneic Co-Culture Setting of Pre-Treated Tumor Cells
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Cracking Chordoma's Conundrum: Immune Checkpoints Provide a Potential Modality.

Weihai Liu1,2, Moksada Regmi1,2,3, Xiaodong Chen1,2

  • 1State Key Laboratory of Vascular Homeostasis and Remodeling, Department of Neurosurgery, Peking University Third Hospital, Peking University, Beijing 100191, China.

International Journal of Medical Sciences
|May 19, 2025
PubMed
Summary

This study reveals chordoma

Keywords:
chordomadifferential expressionimmune checkpoint inhibitorsimmune checkpoints

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Area of Science:

  • Oncology
  • Immunology
  • Genomics

Background:

  • Chordoma is a rare cancer resistant to standard therapies.
  • The tumor microenvironment of chordoma is not well understood.
  • Immunotherapy offers potential but requires knowledge of immune checkpoints.

Purpose of the Study:

  • To investigate the immune microenvironment of chordoma.
  • To identify potential immune targets for chordoma therapy.
  • To characterize immune checkpoints and immunogenic subtypes in chordoma.

Main Methods:

  • Integrated analysis of public and RNA-seq chordoma datasets.
  • Differential gene expression, GSEA, immune cell infiltration analysis.
  • WGCNA, consensus clustering, and machine learning for immune regulator identification.

Main Results:

  • Identified significant upregulation of immune checkpoints (PD-1, CTLA-4).
  • Found enhanced immune-related processes and enrichment of T cells and macrophages.
  • Discovered a highly immunogenic chordoma subtype and identified CCR7 as a key regulator.

Conclusions:

  • Chordoma exhibits a distinct immune landscape with elevated immune checkpoints.
  • Characterized immunogenic subtypes and a T cell-centered regulatory network.
  • Supports the potential of immune checkpoint inhibitors and immunotherapy for chordoma treatment.