Breast cancers as ecosystems: a metabolic perspective

Area of Science:

• Oncology
• Cancer Biology
• Metabolic Research

Background:

• Breast cancer (BC) remains a leading cause of cancer death globally, with late recurrence and distant metastases posing significant challenges.
• Metastatic dormancy, where cancer cells remain inactive for years before reactivation, is a critical factor in BC's natural history and treatment resistance.
• Emerging evidence highlights the importance of the tumor microenvironment and systemic interactions (cancer ecosystem) in cancer progression, comparable to cell-autonomous alterations.

Purpose of the Study:

• To explore the role of metabolic pathways within the cancer ecosystem in understanding breast cancer progression, particularly metastatic dormancy and recurrence.
• To investigate how metabolic adaptations in cancer cells and their environment contribute to the long-term survival and eventual reactivation of dormant metastatic cells.
• To identify potential therapeutic targets within cancer metabolism for improved breast cancer management and the prevention of late recurrences.

Main Methods:

• Review and synthesis of current research on cancer metabolism and the tumor microenvironment in breast cancer.
• Analysis of metabolic pathways co-opted by breast cancer cells to meet their energy and anabolic demands.
• Integration of ecosystem-based approaches to understand non-cancer-cell-autonomous factors influencing metastatic dormancy and reactivation.

Main Results:

• Metabolic pathways are significantly altered and co-opted within the breast cancer ecosystem to support tumor growth and survival.
• The interplay between cancer cells and their environment, particularly metabolic interactions, is crucial for establishing and maintaining metastatic dormancy.
• Understanding these metabolic adaptations provides insights into the mechanisms driving late recurrences and treatment failure in breast cancer.

Conclusions:

• A metabolic perspective on the cancer ecosystem is essential for comprehending the complex natural history of breast cancer, including dormancy and recurrence.
• Targeting metabolic pathways within the cancer ecosystem presents a promising avenue for developing novel therapeutic strategies against metastatic breast cancer.
• Further research into cancer metabolism holds the key to overcoming challenges in breast cancer management, particularly concerning late metastatic dissemination and dormancy.