An immunocytokine consisting of a TNFR2 agonist and TNFR2 scFv enhances the expansion of regulatory T cells through TNFR2 clustering

Copyright © 2024 Elsevier Inc. All rights reserved..

Regulatory T cells (Tregs) are lymphocytes that play a central role in peripheral immune tolerance. Tregs are promising targets for the prevention and suppression of autoimmune diseases, allergies, and graft-versus-host disease, and treatments aimed at regulating their functions are being developed. In this study, we created a new modality consisting of a protein molecule that suppressed excessive immune responses by effectively and preferentially expanding Tregs. Recent studies reported that tumor necrosis factor receptor type 2 (TNFR2) expressed on Tregs is involved in the proliferation and activation of Tregs. Therefore, we created a functional immunocytokine, named TNFR2-ICK-Ig, consisting of a fusion protein of an anti-TNFR2 single-chain Fv (scFv) and a TNFR2 agonist TNF-α mutant protein, as a new modality that strongly enhances TNFR2 signaling. The formation of agonist-receptor multimerization (TNFR2 cluster) is effective for the induction of a strong TNFR2 signal, similar to the TNFR2 signaling mechanism exhibited by membrane-bound TNF. TNFR2-ICK-Ig improved the TNFR2 signaling activity and promoted TNFR2 cluster formation compared to a TNFR2 agonist TNF-α mutant protein that did not have an immunocytokine structure. Furthermore, the Treg expansion efficiency was enhanced. TNFR2-ICK-Ig promotes its effects via scFv, which crosslinks receptors whereas the agonists transmit stimulatory signals. Therefore, this novel molecule expands Tregs via strong TNFR2 signaling by the formation of TNFR2 clustering.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:697

Enthalten in:

Biochemical and biophysical research communications - 697(2024) vom: 19. Feb., Seite 149498

Sprache:

Englisch

Beteiligte Personen:

Inoue, Masaki [VerfasserIn]
Tsuji, Yuta [VerfasserIn]
Kashiwada, Ayaka [VerfasserIn]
Yokoyama, Asahi [VerfasserIn]
Iwata, Akane [VerfasserIn]
Abe, Yasuhiro [VerfasserIn]
Kamada, Haruhiko [VerfasserIn]
Tsunoda, Shin-Ichi [VerfasserIn]

Links:

Volltext

Themen:

Carrier Proteins
Immunocytokine
Journal Article
Mutant Proteins
Receptors, Tumor Necrosis Factor, Type II
Regulatory T cells
Single-Chain Antibodies
TNF receptor type 2
Tregs
Tumor Necrosis Factor-alpha
Tumor necrosis factor (TNF)-α

Anmerkungen:

Date Completed 14.02.2024

Date Revised 14.02.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.bbrc.2024.149498

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM367527170