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Significance of the Lysyl Oxidase Members Lysyl Oxidase Like 1, 3, and 4 in Gastric Cancer.
Digestion 2018
BACKGROUND/AIMS: Lysyl oxidase (LOX) family members play a key role in modifying the primary tumor microenvironment by crosslinking collagens and elastin in the extracellular matrix. The aim of this study was to analyze the LOX-like (LOXL)1, LOXL3, and LOXL4 expressions in gastric cancer tissue by immunohistochemical staining.
METHODS: The correlations between the clinicopathological features of 597 primary gastric carcinomas and LOX family members - LOXL1, LOXL3, and LOXL4 - were investigated by immunohistochemical studies. The effect of the transforming growth -factor β1 (TGFβ1) on the expressions of LOXL1, LOXL3, and LOXL4 in gastric cancer was examined using diffuse-type gastric cancer cell lines in vitro.
RESULTS: The expressions of LOXL1, LOXL3, and LOXL4 were correlated with T invasion, lymph node metastasis, and lymphatic and venous invasion. LOXL1 expression was associated with histological intestinal-type and expanding growth patterns. The overall survival of patients with LOXL1-, LOXL3-, or LOXL4-positive cancer was poorer than those with negative cancer. LOXL3 and LOXL4 mRNA expressions were significantly high in diffuse-type gastric cancer cells with high invasion ability. TGFβ decreased the LOXL1 expression and increased LOXL3 and LOXL4 expression.
CONCLUSION: LOXL1, LOXL3, and LOXL4 expressions are associated with distant metastasis of gastric cancer.
METHODS: The correlations between the clinicopathological features of 597 primary gastric carcinomas and LOX family members - LOXL1, LOXL3, and LOXL4 - were investigated by immunohistochemical studies. The effect of the transforming growth -factor β1 (TGFβ1) on the expressions of LOXL1, LOXL3, and LOXL4 in gastric cancer was examined using diffuse-type gastric cancer cell lines in vitro.
RESULTS: The expressions of LOXL1, LOXL3, and LOXL4 were correlated with T invasion, lymph node metastasis, and lymphatic and venous invasion. LOXL1 expression was associated with histological intestinal-type and expanding growth patterns. The overall survival of patients with LOXL1-, LOXL3-, or LOXL4-positive cancer was poorer than those with negative cancer. LOXL3 and LOXL4 mRNA expressions were significantly high in diffuse-type gastric cancer cells with high invasion ability. TGFβ decreased the LOXL1 expression and increased LOXL3 and LOXL4 expression.
CONCLUSION: LOXL1, LOXL3, and LOXL4 expressions are associated with distant metastasis of gastric cancer.
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