A protocol to investigate the effects of lncRNAs on in vivo protein-protein interactions using proximity ligation assay

Abstract

Summary: A large variety of cellular signals are triggered and transmitted by protein-protein interactions (PPIs). Long noncoding RNAs regulate PPIs by enhancing or destabilizing these interactions. Here, we use the proximity ligation assay technique to determine PPIs between p53 and SET regulated by long intergenic noncoding RNA 324 (LINC00324). We detail procedures for establishing LINC00324 knockdown and overexpression U2OS and HepG2 cells followed by in situ PLA protocol. This approach has many potential applications for the study of cellular factors that regulate PPIs.For complete details on the use and execution of this protocol, please refer to Zhang et al. (2023).1 : Publisher’s note: Undertaking any experimental protocol requires adherence to local institutional guidelines for laboratory safety and ethics.

Keywords

• Cell Biology
• Cancer
• Microscopy
• Molecular/Chemical Probes
• Protein Biochemistry