Tumour Microenvironment-Immune Cell Interactions Influencing Breast Cancer Heterogeneity and Disease Progression

Area of Science:

• Oncology
• Cancer Biology
• Immunology

Background:

• Breast cancer heterogeneity drives disease progression, metastasis, and therapeutic resistance.
• The tumor microenvironment (TME), comprising diverse cellular and non-cellular components, significantly influences cancer cell behavior.
• Interactions within the TME, particularly between stromal and immune cells, generate mechanical and chemical cues that impact cancer evolution.

Purpose of the Study:

• To review emerging concepts on how TME interactions contribute to breast cancer heterogeneity and progression.
• To explore the therapeutic potential of targeting the TME and its associated cellular interactions.

Main Methods:

• Literature review of current research on breast cancer heterogeneity and the TME.
• Analysis of mechanisms driving intratumoral heterogeneity.
• Discussion of therapeutic strategies targeting TME components and cell-cell communications.

Main Results:

• Germline and somatic mutations initiate heterogeneity, which is further amplified by TME-driven selective pressures.
• Stromal-immune cell interactions within the TME are critical for metastasis and can induce therapeutic resistance.
• The TME plays a crucial role in adapting cancer cells, leading to a feedback loop that enhances disease complexity.

Conclusions:

• Targeting the TME and immune-stromal cell interactions presents a viable therapeutic avenue for breast cancer.
• Understanding TME dynamics is essential for developing effective treatments against heterogeneous breast cancer.
• Therapeutic strategies focused on the TME may overcome treatment resistance and improve patient outcomes.