Aberrant Expression of Solute Carrier Family 35 Member A2 Correlates With Tumor Progression in Breast Cancer.
In vivo (Athens, Greece)(2023)
Abstract
BACKGROUND/AIM:A recent study suggested that solute carrier family 35 member A2 (SLC35A2) is related to poor prognosis in patients with breast cancer. SLC35A2 transports uridine diphosphate-galactose from the cytosol to the lumen of the endoplasmic reticulum and Golgi.
MATERIALS AND METHODS:Immunohistochemical expression of SLC35A2 was evaluated using tissue microarrays. Cell growth, migration, and invasion of breast cancer cells were examined following loss- and gain-of-expression of SLC35A2.
RESULTS:Normal breast tissue exhibited SLC35A2 immunoreactivity in the nucleus. A progressive increase in cytoplasmic expression from in situ carcinoma to invasive carcinoma was observed. There was a correlation between cytoplasmic SLC35A2 expression and breast cancer stage (p<0.001). MDA-MB-468 and MCF-7 cells transfected with SLC35A2 shRNA had unchanged cell viability but significantly reduced cell migration and invasion. In contrast, MDA-MB-231 and HCC1806 cells transfected with the SLC35A2 expression vector showed increased migration.
CONCLUSION:Breast cancer progression is accompanied by differential expression patterns of SLC35A2. The migratory or invasive capacity of breast cancer cells is associated with SLC35A2 expression.
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Key words
Cancer
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