...an environment (e.g. BL2+) suitable for handling HIV-derivative viruses. For transient knockdown of protein...μg/mL polybrene. TIP: Polybrene increases the efficiency of viral infection. However, polybrene is toxic...drives RNA Polymerase III transcription for generation of shRNA transcripts. cPPT Central polypurine tract,...especially repeated Ts because polyT is a termination signal for RNA polymerase III. Note that these were ... sense—CTCGAG—21bp antisense—TTTTTG 3’ Reverse oligo: 5’ AATTCAAAAA—21bp sense—CTCGAG—21bp antisense... for 12-15 hours. c. In polypropylene microfuge tubes (do NOT use polystyrene tubes), make a cocktail .... Hexadimethrine Bromide (Polybrene) Prepare a 1mg/mL solution of polybrene (Sigma-Aldrich catalog #H9268...