Two shRNA constructs were used to knock down EphrinB2: shRNA 1 (5′-CGG-GTG-TTA-CAG-TAG-CCT-TAT-3′) and shRNA 2 (5′-CAG-ATT-GTG-TAC-ATA-GAG-CAA-T-3′), both obtained from Sigma-Aldrich (St. Louis, MO, USA). shRNA were cloned into the PLKO lentiviral vector6 (link) and infected by retrovirus into undifferentiated Ocy454 cells. Infected cells were selected with puromycin (5 µg/mL) and cultured at permissive temperature (33 °C) before transfer to 37 °C for differentiation. Knockdown was validated by qRT-PCR using multiplex primers, as above.
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