published on 04/02/2026

IMMUNESTRATIFY- publicatie

A publication of the team of Marjan Versnel:

Humer B, Berentschot JC, van Helden-Meeuwsen CG, Bek LM, de Bie M, Defesche TM, Boly CA, Drost M, Hellemons ME, Dik WA, Versnel MA. Exaggerated IFN-I Response in Long COVID PBMCs Following Exposure to Viral Mimics. Journal of Clinical Immunology. 2025 Dec 10.

The study looked at a possible trigger of Long Covid: an immunesystem that reacts too quickly and too heavily. We specificly studied type I interferons (IFN I), which normally help with combatting viruses. Some viruses can epigenetically change immune cells, which makes them “always alert”

In this project immune cells of 2 groups of LC patiënts were studies. The cells were exposed in the lab to synthetic virusparts. what we noticed: in LC patiënts these cells produced significantly more IFN I than the healthy control cells, which points to an “overactive” immune respons.

We also found a weak relation between increased IFN I activity and exhaustionespecially in the Microx cohort. and because IFN I treatment is known to have exhaustion as a side-effect, this is an interesting clue that deserves a follow-up study, also for ME and other PAIS.

For who wants to know more: Marjan Versnel answers questions on the project and immunesignatures in these video’s

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