Abstract
BackgroundThe roles played by sodium/glucose cotransporters 1 (SGLT1) that transport glucose in cells independent of extracellular glucose concentration in gastric cancer are unknown. MethodsThe expression of SGLT1 in 75 primary gastric cancer and paired adjacent normal tissue specimens was determined. Also, the underlying mechanism of the altered SGLT1 expression and its impact on the proliferation of the gastric cancer cells and their metabolism were investigated. ResultsSGLT1 expression was found to be positively associated with pT, pN, TNM staging, histological differentiation, and a worse overall survival. CRISPR/Cas9 mediated knockout of SGLT1 could inhibit proliferation of gastric cancer cells, promote their apoptosis, and could also alter the metabolism of gastric cancer cells. Mechanistically, the transcription activity of SGLT1 could be negatively regulated by p53. ConclusionsBesides identifying the important role of SGLT1 in gastric cancer, the underlying regulation mechanism in play was also elucidated. These make SGLT1 a promising new molecular target for the design of novel therapeutic modalities to control gastric cancer.
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