Dr. Roger Geiger is a Group Leader at the Institute for Research in Biomedicine in Bellinzona, Switzerland, and leads a research group at the Technical University of Dresden in Germany. He discusses how his lab studies the metabolic regulation of T cell function and explores engineering bacteria to deliver therapeutic payloads directly to tumors. He also explains how arginine metabolism can enhance anti-tumor T cell responses and how naïve T cells remain metabolically prepared to rapidly respond to immune challenges.

• Stay up-to-date with the latest in cell therapy news.
• Download a free wallchart on the production of CAR T cells.

C. difficile Shapes Gut Development– Early-life C. difficile exposure alters intestinal stem cell behavior and leaves lasting changes in gut development.

The Serotonin–Asthma Connection– ILC2-derived serotonin amplifies airway inflammation and activates sensory neurons to promote asthma and cough hypersensitivity.

IgA Fuels Liver Inflammation – IgA binding to liver myeloid cells is associated with IL-1-linked inflammation and liver injury in alcohol-associated liver disease.

Serotonin Drives Severe COVID-19 – Platelet-derived serotonin promotes blood clotting and lung dysfunction during SARS-CoV-2 infection, helping explain greater disease severity with age.

Image courtesy of Dr. Roger Geiger

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