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Engineering Peptide Modulators for T-Cell Migration by Structural Scaffold Matching.

Jasmin Gattringer¹, Simon Hasinger¹, Agnes Weidmann¹

¹Center for Physiology and Pharmacology, Medical University of Vienna, 1090 Vienna, Austria.

Journal of Medicinal Chemistry

|August 12, 2025

Summary

This summary is machine-generated.

Researchers engineered stabilized pepitem-based probes to inhibit T-lymphocyte migration. VhTI-pep 2 effectively blocks CD3+ T-cell movement, offering a promising strategy for autoimmune and inflammatory diseases.

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Area of Science:

Immunology
Structural Biology
Medicinal Chemistry

Background:

Lymphocyte migration is critical in autoimmune and inflammatory diseases.
Inhibiting autoreactive immune cells presents a therapeutic opportunity.
Pepitem is an endogenous modulator of lymphocyte migration.

Purpose of the Study:

To engineer stabilized pepitem-based probes for inhibiting lymphocyte migration.
To overcome challenges associated with flexible and linear peptides in therapeutic design.

Main Methods:

Utilized a structural scaffold matching approach to identify suitable peptide scaffolds.
Mined protein structure databases to find structures mimicking pepitem's helix-loop-helix motif.
Developed and tested VhTI-pep 2 for its ability to inhibit CD3+ T-lymphocyte migration.

Main Results:

Developed VhTI-pep 2, a stabilized pepitem-based probe.
VhTI-pep 2 demonstrated comparable potency to pepitem in inhibiting CD3+ T-lymphocyte migration (EC50 = 10.6 ± 16.5 nM vs. 6.0 ± 6.4 nM).
The probe's efficacy extended to T-cell subsets from multiple sclerosis patients, including memory and Th1 cells.

Conclusions:

The structural scaffold matching approach successfully yielded stabilized peptide probes.
VhTI-pep 2 is a potent inhibitor of T-lymphocyte migration, relevant to autoimmune diseases.
This strategy provides a foundation for designing novel peptide therapeutics targeting lymphocyte migration.