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Updated: Jun 5, 2025

Analysis of Human T Cell Activity in an Allogeneic Co-Culture Setting of Pre-Treated Tumor Cells
Published on: March 7, 2025
Soluble CTLA-4 - A confounding factor in CTLA-4 based checkpoint immunotherapy in cancer
Parviz Azimnasab-Sorkhabi1, Maryam Soltani-Asl1, Musab Bouhajra2
1Department of Surgery, School of Veterinary Medicine and Animal Sciences, University of Sao Paulo, Sao Paulo, Brazil; Pelotonia Institute for Immuno-Oncology and Division of Medical Oncology, Department of Internal Medicine, Wexner Medical Center, The Ohio State University, Columbus, OH, USA.
Abstract:
Cytotoxic T-lymphocyte-associated antigen 4 (CTLA-4) is a receptor that inhibits the activity of T cells. The CTLA-4 gene consists of four different exons that enable four different isoforms of CTLA-4 to be generated through alternative splicing. Although sCTLA-4 might impede the therapeutic effect of anti-CTLA-4 treatments, the role of sCTLA-4 in the tumor microenvironment (TME) is not well understood. Here, we provide novel perspectives on the inhibitory characteristics of sCTLA-4 in TME.

