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Updated: May 5, 2026

Analysis of Human T Cell Activity in an Allogeneic Co-Culture Setting of Pre-Treated Tumor Cells
Published on: March 7, 2025
Polyarginine induces an antitumor immune response through binding to toll-like receptor 4
Yong Yang1, Joy Wolfram, Xiaohong Fang
1Department of Nanomedicine, The Methodist Hospital Research Institute, 6670 Bertner Ave, Houston, TX, 77030, USA.
Abstract:
A novel function of polyarginine as an activator of the immune system is reported. Single-molecule fluorescence imaging and single-molecule force measurements demonstrate that polyarginine binds specifically to the toll-like receptor 4 (TLR4), inducing receptor dimerization and activation. Moreover, polyarginine induced immune activation inhibits tumor growth. These results suggest the potential use of polyarginine for cancer immunotherapy.
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