Cell culture and the cell lines used were as described previously34 (link). The stable cell lines used in the study were created using lentiviral transduction. For knockdown of GCNT1 the following shRNA lentiviral particles were purchased from Santa Cruz (GCNT1 shRNA sc-92945-V and Control shRNA sc-108080). Transductions were carried out according to the manufacturer’s instructions using an MOI of 5. For overexpression of GCNT1 the following Lentifect Purified lentiviral particles were purchased from Tebu-Bio (GCNT1 LPP-Z6088-Lv242-050-S and Negative Control 217LPP-NEG-Lv242-025-C). Transductions were carried out according to the manufacturer’s instructions using an MOI of 5. For the metastasis study, PC3 cells were transduced with Firefly Luciferase Lentivirus (BPS Bioscience, 79692-H) at a MOI of 1 in media containing 5 µg/ml polybrene. Stable cell lines were selected with 200 μg/ml hygromycin, and then further selected for GCNT1 overexpression using the methods described above.
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