review · Cells
Liver cancer remains a major global health challenge with substantial morbidity and mortality worldwide. Tumours do not consist solely of malignant cells, but also contain diverse non-cancerous cells and extracellular matrix structures. These associated elements include vascular endothelial cells, fibroblasts, and various inflammatory cells such as neutrophils, monocytes, macrophages, mast cells, eosinophils, and lymphocytes. Once viewed as passive bystanders during cancer proliferation and local spread, components of this tumour microenvironment actively drive tumour progression and metastasis. Growth factors produced by both neoplastic and inflammatory cells create an imbalance between positive and negative regulatory signals, fuelling the progression of the disease. A deeper understanding of these complex interactions and regulatory networks helps clarify how the surrounding microenvironment modulates liver cancer, providing a foundation for designing targeted interventions aimed at critical microenvironmental elements.
Liver cancer is a primary contributor to worldwide illness and mortality. Effective treatments require addressing not only the cancer cells themselves, but also the surrounding biological environment that fuels their growth. Mapping how normal and inflammatory cells communicate with tumours helps scientists uncover hidden mechanisms of disease progression, enabling the development of more effective therapeutic strategies for patients.
This work could inform early therapeutic discovery programmes by highlighting cellular and signaling components within the tumour microenvironment as drug targets. The primary beneficiaries would be oncology drug discovery teams and biotechnology firms developing liver cancer therapies. As this work is an analytical review of biological mechanisms, it is at an early conceptual stage and remains distant from clinical application or commercial product development.
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Liver cancer represents a substantial global health challenge, contributing significantly to worldwide morbidity and mortality. It has long been understood that tumors are not composed solely of cancerous cells, but also include a variety of normal cells within their structure. These tumor-associated normal cells encompass vascular endothelial cells, fibroblasts, and various inflammatory cells, including neutrophils, monocytes, macrophages, mast cells, eosinophils, and lymphocytes. Additionally, tumor cells engage in complex interactions with stromal cells and elements of the extracellular matrix (ECM). Initially, the components of what is now known as the tumor microenvironment (TME) were thought to be passive bystanders in the processes of tumor proliferation and local invasion. However, recent research has significantly advanced our understanding of the TME's active role in tumor growth and metastasis. Tumor progression is now known to be driven by an intricate imbalance of positive and negative regulatory signals, primarily influenced by specific growth factors produced by both inflammatory and neoplastic cells. This review article explores the latest developments and future directions in understanding how the TME modulates liver cancer, with the aim of informing the design of novel therapies that target critical components of the TME.
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DOI: 10.3390/cells13191666
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