Abstract
Aim: The low-density lipoprotein receptor gene (LDLR) family plays a fundamental role in many malignancies and may have a putative cancer-boosting function. In our study, we have attempted to comparatively investigate the differential gene expressions of LDLR family in normal prostate epithelial cell line (RWPE-1), prostate cancer cell line (DU145 cell line), prostate cancer stem cells (DU145 CSCs) and non-CSCs (DU145 non-CSCs, bulk population). 
 Materials and Methods: Cancer stem cells in DU-145 prostate cancer cell line were isolated by flow cytometry according to CD133 and CD44 cell surface properties. Whole transcriptome sequencing data was comprehensively analyzed for each group. The protein-protein interaction network was determined using the STRING protein database.
 Results: Our data showed that the expression levels of LRP1, LRP3, LRP8 and LRP11 were increased in the DU145 CSCs relative to the normal prostate epithelial cell line. 
 Conclusion: Overall, our data suggest that the LRP functions and/or the expression in prostate cancer may ultimately change the invasive phenotype of the CSCs.
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