RNAscope dual ISH-IHC technology to study angiogenesis in diffuse large B-cell lymphomas

Area of Science:

• Oncology
• Molecular Biology
• Pathology

Background:

• Diffuse large B-cell lymphomas (DLBCLs) are aggressive Non-Hodgkin's lymphomas with variable clinical outcomes.
• Tumor progression in DLBCLs involves enhanced proliferation, invasion, and angiogenesis, impacting prognosis and dissemination.
• The Janus kinase (Jak)/signal transducer and activator of transcription (STAT) pathway is implicated in DLBCLs angiogenesis via vasculogenesis.

Purpose of the Study:

• To present a detailed protocol for RNAscope technology and dual RNAscope ISH-IHC in DLBCLs.
• To establish dual RNAscope ISH-IHC as a powerful method for studying DLBCLs angiogenesis.
• To identify novel prognostic/predictive biomarkers for antiangiogenic treatment selection in DLBCLs.

Main Methods:

• RNAscope technology applied to formalin-fixed, paraffin-embedded DLBCL sections.
• Immunohistochemistry (IHC) combined with RNAscope ISH (dual ISH-IHC).
• Detailed protocol development and validation for dual ISH-IHC in DLBCL samples.

Main Results:

• Demonstrated the feasibility and power of dual RNAscope ISH-IHC for DLBCLs research.
• Enabled simultaneous analysis of RNA and protein expression in DLBCL tissues.
• Provided a method to address complex biological questions regarding DLBCLs angiogenesis.

Conclusions:

• Dual RNAscope ISH-IHC is a highly effective technique for investigating angiogenesis in DLBCLs.
• This method facilitates the characterization of tumor endothelium and proangiogenic pathways.
• The approach holds promise for identifying biomarkers to guide antiangiogenic therapy selection in DLBCL patients.