Table 1. Overview of Tregitope in vivo experiments and results.
Experimental Model | Finding | Human Disease Parallel | Current Clinical Therapy | In vivo controls | Source |
---|---|---|---|---|---|
OVA-specific tolerance in C57BL/6 mice |
Suppression of T cell proliferation; Suppression of OVA-antibody titer |
Enzyme Replacement Therapy |
Immune Tolerance Induction |
Influenza HA (Negative CTR) No effect; IVIG CTR similar to Tregitope |
L. Cousens, A. De Groot (EpiVax) |
OVA-specific tolerance in DO11.10 TCR Transgenics |
Suppression of T cell proliferation; induction of antigen-specific Tregs |
Enzyme Replacement Therapy |
Immune Tolerance Induction |
Influenza HA peptide: No effect |
D.Scott, Y. Su (USUHS) |
EAE prevention with Tregitope In C57Bl/6 |
Reduction of EAE symptoms; induction of Tregs |
Multiple Sclerosis |
Copaxone; Interferon β Tysabri; Campath |
OVA peptide (Negative CTR) No effect; IVIG CTR similar to Tregitope |
S.Khoury; W. Elyaman (Brigham) |
OVA Allergy Model; Therapy with Tregitope vs. IVIG |
Reduction of allergic response to OVA and airway reactivity, increase in Treg Induction |
Allergy |
Anti-histamines, Immune Tolerance Induction |
Albumin (Negative CTR) No effect; IVIG CTR similar to Tregitope |
B. Mazer, A. Massoud (McGill) |
Tregitope in AAV; TNBS-induced model of inflammatory colitis |
Reduction of clinical and histological severity, increased Treg infiltration in the colon |
Crohn’s Disease |
Azathiaprine, Anti-TNF Mabs, Steroids |
Saline; No effect |
V. Ferreira, S. van der Marel (UniQure) |
Tregitope in AAV for Gene Transfer |
Suppressed CD8+-T cell response to AAV epitope in gene transfer model |
Gene Transfer |
Gene Transfer Vectors currently induce CTL response |
Scrambled Tregitope peptide (Negative CTR) No effect |
F. Mingozzi (CHOP) |
Tregitope in T1D (NOD model) with insulin peptides |
Suppressed development of diabetes; effect enhanced when Tregitope co-delivered with insulin | Type I Diabetes | Insulin Therapy | PPI peptides, Tet Tox peptide (Negative CTR) No effect | L. Cousens, A. De Groot (EpiVax) |