CRISPR/Cas9 mediated knockout was done to suppress the expression of endogenous BRCA1 in primary human CD4+T helper cells isolated from control subjects, NSCLC and CAD patients. Transfection was performed using CRISPR/Cas9 knock-out (KO) plasmids (Santa Cruz) and their control plasmid (Santa Cruz) utilizing all the supplied reagents as per the manufacturer's protocol. Transfection was done successfully which was verified by flow cytometry and transfection efficiency was checked by GFP staining. BRCA1 primary antibody (Santa Cruz) and secondary antibody, Goat anti-Rabbit IgG (H+L) APC (Santa Cruz) was used for this purpose. Human tagged ORF clone of BRCA1 gene (Origene) was used to overexpress the BRCA1 gene using AmaxaTM Cell Line NucleofectorTM Kit V (Lonza) and Amaxa nucleofector 2b. After that flow cytometry was done using BRCA1 primary antibody (Santa Cruz) and a secondary antibody, Goat anti-Rabbit IgG (H+L) Alexa Fluor 594 (Invitrogen) to verify successful overexpression of the particular gene [15] (link).
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