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Biological Heterogeneity of Chondrosarcoma: From (Epi) Genetics through Stemness and Deregulated Signaling to

Agnieszka Zając1, Sylwia K Król2, Piotr Rutkowski1

  • 1Department of Soft Tissue/Bone Sarcoma and Melanoma, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland.

Cancers
|April 3, 2021
PubMed

Insights

Chondrosarcoma (ChS) is a rare bone cancer. This review explores ChS genetic mutations, molecular pathways, and immune cells, identifying potential targets for new therapies and immunotherapy. Understanding ChS biology is key to developing novel treatments.

Area of Science:

  • Oncology
  • Molecular Biology
  • Immunology

Background:

  • Chondrosarcoma (ChS) is a primary malignant bone tumor with heterogeneous outcomes and resistance to conventional therapies.
  • Key genetic alterations in ChS include mutations in isocitrate dehydrogenase ½ (IDH1/2), COL2A1, TP53, and chromosomal aberrations like MDM2 amplification and CDKN2A loss.
  • Dysregulation of phosphatidylinositol 3-kinase/protein kinase B/mammalian target of rapamycin (PI3K-AKT-mTOR) and hedgehog pathways contributes to ChS progression.

Purpose of the Study:

  • To review current knowledge on Chondrosarcoma (ChS) biology, focusing on genetic alterations, molecular pathways, and the tumor microenvironment.
  • To summarize cellular markers and tumor-associated immune cells relevant to ChS.
  • To identify potential targets for novel therapeutic strategies, including immunotherapy.

Main Methods:

  • Literature review of recent discoveries in Chondrosarcoma (ChS) biology.
  • Analysis of genetic mutations, chromosomal aberrations, and epigenetic modifications.
  • Examination of key molecular pathways (PI3K-AKT-mTOR, hedgehog) and their role in ChS.
  • Assessment of cellular markers and tumor-associated immune cells in the ChS microenvironment.

Main Results:

  • ChS exhibits frequent mutations in IDH1/2, COL2A1, and TP53, alongside chromosomal aberrations and epigenetic changes.
  • PI3K-AKT-mTOR and hedgehog signaling pathways are implicated in ChS tumor growth and proliferation.
  • The tumor microenvironment and associated immune cells present potential targets for ChS therapy.

Conclusions:

  • Understanding the complex molecular landscape of Chondrosarcoma (ChS), from genetic mutations to immune cell interactions, is crucial for developing effective treatments.
  • Identifying specific cellular markers and pathway dysregulations offers opportunities for targeted therapies and immunotherapy in ChS.
  • Further research into the ChS tumor microenvironment may reveal novel inhibitory targets for improved patient outcomes.
Keywords:
cartilage-forming malignancychondrosarcomamesenchymal stem cellprimary bone tumor

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