Reymond Research Group

University of Bern

An Immunomodulatory Peptide Dendrimer Inspired from Glatiramer Acetate

Check our latest paper An Immunomodulatory Peptide Dendrimer Inspired from Glatiramer Acetate published in the Journal of Angewandte Chemie!

It is the first example of an immunomodulatory molecule designed as an analog of Glatiramer acetate.

Glatiramer acetate (GA) is a random polypeptide drug used to treat multiple sclerosis (MS), a chronic autoimmune disease. With the aim of identifying a precisely defined alternative to GA, we synthesized a library of peptide dendrimers with an amino acid composition similar to GA. We then challenged the dendrimers to trigger the release of the anti-inflammatory cytokine interleukin-1 receptor antagonist (IL-1Ra) from human monocytes, which is one of the effects of GA on immune cells. Several of the largest dendrimers tested were as active as GA. Detailed profiling of the best hit showed that this dendrimer induces the differentiation of monocytes towards an M2 (anti-inflammatory) state as GA does, however with a distinct immune marker profile. Our peptide dendrimer might serve as a starting point to develop a well-defined immunomodulatory analog of GA.

Author(s): Dina Erzina, Alice Capecchi, Sacha Javor, Jean-Louis Reymond