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Research Article: The adverse outcome pathway for breast cancer: a knowledge management framework bridging biomedicine and toxicology

Date Published: 2023-12-05

Abstract:
Breast cancer is the most common cancer worldwide, with an estimated 2.3 million new cases diagnosed every year. Effective measures for cancer prevention and cancer therapy require a detailed understanding of the individual key disease mechanisms involved and their interactions at the molecular, cellular, tissue, organ, and organism level. In that regard, the rapid progress of biomedical and toxicological research in recent years now allows the pursuit of new approaches based on non-animal methods that provide greater mechanistic insight than traditional animal models and therefore facilitate the development of Adverse Outcome Pathways (AOPs) for human diseases. We performed a systematic review of the current state of published knowledge with regard to breast cancer to identify relevant key mechanisms for inclusion into breast cancer AOPs, i.e. decreased cell stiffness and decreased cell adhesion, and to concurrently map non-animal methods addressing these key events. We conclude that the broader sharing of expertise and methods between biomedical research and toxicology enabled by the AOP knowledge management framework can help to coordinate global research efforts and accelerate the transition to advanced non-animal methods, which, when combined into powerful method batteries, closely mimic human physiology and disease states without the need for animal testing.

Introduction:
Breast cancer is the most common cancer type and the leading cause of cancer death in women [1]. Gaining a mechanistic understanding of breast cancer to prevent cancer-related deaths is therefore a common goal shared between biomedical research and toxicology. However, the enormous knowledge on breast cancer mechanisms obtained from experimental, clinical, and toxicological testings is scattered across individual research fields, calling for intensified collaborative efforts and knowledge exchange [2]. In the…

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