4.7 Article

Proteolytic Landscapes in Gastric Pathology and Cancerogenesis

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MDPI
DOI: 10.3390/ijms23052419

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gastric cancer; protease; MMP; ADAM; HtrA; EMT; Helicobacter pylori; E-cadherin

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This article discusses the importance of proteases in gastric cancer, including their role in various stages of tumor development, such as epithelial inflammation, cell proliferation and cell death, tumor metastasis and neoangiogenesis.
Gastric cancer is a leading cause of cancer-related death, and a large proportion of cases are inseparably linked to infections with the bacterial pathogen and type I carcinogen Helicobacter pylori. The development of gastric cancer follows a cascade of transformative tissue events in an inflammatory environment. Proteases of host origin as well as H. pylori-derived proteases contribute to disease progression at every stage, from chronic gastritis to gastric cancer. In the present article, we discuss the importance of (metallo-)proteases in colonization, epithelial inflammation, and barrier disruption in tissue transformation, deregulation of cell proliferation and cell death, as well as tumor metastasis and neoangiogenesis. Proteases of the matrix metalloproteinase (MMP) and a disintegrin and metalloproteinase domain-containing protein (ADAM) families, caspases, calpain, and the H. pylori proteases HtrA, Hp1012, and Hp0169 cleave substrates including extracellular matrix molecules, chemokines, and cytokines, as well as their cognate receptors, and thus shape the pathogenic microenvironment. This review aims to summarize the current understanding of how proteases contribute to disease progression in the gastric compartment.

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