Cell-Cell Interactome-Based Pathogenesis and Therapies for Osteosarcoma.

Area of Science:

• Oncology
• Cancer Biology
• Tumor Microenvironment Research

Background:

• Osteosarcoma (OS) is a primary bone cancer in young individuals, marked by aggression, metastasis, and poor treatment outcomes.
• OS progression is significantly influenced by the tumor microenvironment (TME), involving complex cell-cell interactions.
• Current treatments often fail due to tumor resistance and aggressive disease characteristics.

Purpose of the Study:

• To review and synthesize current research on the role of the tumor microenvironment (TME) in osteosarcoma (OS) pathogenesis.
• To emphasize the cell-cell interactions within the TME that drive OS progression, metastasis, and therapeutic resistance.
• To highlight the need for novel therapeutic strategies targeting the TME.

Main Methods:

• Literature review synthesizing existing studies on osteosarcoma (OS) and its tumor microenvironment (TME).
• Analysis of research focusing on interactions between OS cells and stromal components like endothelial cells, fibroblasts, mesenchymal stromal cells, immune cells, and osteoclasts.
• Emphasis on mechanisms of interaction, including direct contact, soluble factors, and extracellular vesicles.

Main Results:

• Cell-cell interactions within the TME promote OS proliferation, immune evasion, extracellular matrix remodeling, and metastasis.
• Tumor and stromal cell adaptive responses to stress contribute significantly to chemoresistance and disease progression.
• The TME plays a critical role in mediating therapeutic resistance in osteosarcoma.

Conclusions:

• Osteosarcoma (OS) pathogenesis is multifactorial, driven by intricate cellular crosstalk within the tumor microenvironment (TME).
• Conventional chemotherapy limitations necessitate the development of combined therapeutic approaches targeting the TME.
• Further research into TME interactions is crucial for identifying therapeutic targets and improving personalized OS treatment.