GPCR tools don’t move the field forward unless researchers can actually use them. This episode breaks down how collaboration turns probes into progress.

Summary

In the final episode of this series, David Hodson, Johannes Broichhagen, and Maria Majellaro unpack how academic labs and Celtarys Research partnered to scale fluorescent probes, improve assay development, and support gpcr drug discovery. The conversation spans receptor internalization, fluorescence assays, tech transfer realities, and why tool availability—not just invention—drives translational pharmacology research.

Key takeaways

• Why accessibility defines the real impact of GPCR tools

• How industry enables scalable assay development

• Lessons from receptor internalization studies in complex tissues

• What makes academia–industry collaborations actually work

Read more here: https://www.ecosystem.drgpcr.com/dr-gpcr-podcast/scaling-glp-1-receptor-tools-through-academia–industry-collaboration

Chemical probes are reshaping how we map GLP-1R in real time — revealing receptor pools antibodies can’t reliably capture.

This is Episode 2 of a 3-part GPCR tool-development series created in partnership with Celtarys Research.

Summary:

Dr. Johannes Broichhagen aka JB breaks down the design logic behind fluorophore-linked peptides, assay trade-offs, and what true receptor internalization looks like in live tissue. A concise masterclass in assay development and GPCR drug discovery.

What you’ll learn:

• Why antibody variability pushed JB toward chemical probe engineering

• The design logic behind Luxendin-based fluorescent tools — and how structure guides function

• What “good assay development” looks like when cells, tissue, and probe behavior collide

• Behind-the-scenes stories from the collaboration with David Hodson

• Why parallelized experiments matter for reproducibility and signal quality

• How small-molecule probes outperform antibodies in live-cell and tissue imaging

• The surprising breakthroughs that shifted JB’s entire research trajectory

• Future directions: multi-color GPCR mapping, AI-guided ligand design, and in vivo chemical biology

Dr GPCR Links & Resources:

• Dr. GPCR Ecosystem: https://www.ecosystem.drgpcr.com/

• Membership & Pricing: https://www.ecosystem.drgpcr.com/university-pricing• Weekly News: https://www.ecosystem.drgpcr.com/gpcr-weekly-news

Precise receptor mapping is reshaping how we understand incretin biology. David Hodson explains how GPCR-targeted chemical probes reveal where GLP-1 and GIP receptors actually signal across pancreas and brain—and what this means for metabolic drug design.
Learn how these tools refine gpcr drug discovery, clarify receptor internalization, and guide next-gen therapeutics.
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