Colon cancer cells expressing cell surface GRP78 as a marker for reduced tumorigenicity
2012
Background
The glucose regulated heat shock protein 78 (GRP78) is a central regulator of ER (endoplasmic reticulum) stress due to its pro-survival property. Up regulated GRP78 expression in tumor cells has been correlated with aggressive malignancies whereas some reports have predicted an improved prognosis. Over-expression of GRP78 in the ER promotes its localization to the cell surface on several cell types including tumor cells.
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