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Published on: January 7, 2019
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Function-driven design of a surrogate interleukin-2 receptor ligand
Ziwei Tang1,2, Zelin Cheng1,2, Teng Li1,2
1Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, China.
FEBS Letters
|December 16, 2025
Summary
Researchers created a novel IL-2 receptor surrogate ligand using bispecific antibodies. This programmable tool precisely controls immune cell activation and differentiation, offering tailored immunomodulatory functions for therapeutic development.
Area of Science:
- Immunology
- Molecular Biology
- Biotechnology
Background:
- Interleukin (IL) receptors are crucial for immune regulation, involving complex subunit interactions.
- Interleukins (cytokines) orchestrate immune responses by binding to specific receptor combinations.
Purpose of the Study:
- To develop a programmable surrogate ligand for the IL-2 receptor.
- To engineer a molecule capable of biased activation and differentiation of immune cells.
Main Methods:
- Utilized a combinatorial bispecific agonist antibody strategy.
- Employed two cell-based reporter systems to monitor STAT5 activation and cell proliferation.
- Engineered a surrogate IL-2 receptor ligand.
Main Results:
- The engineered surrogate ligand demonstrated biased activation of IL-2 receptor signaling.
- Successfully differentiated effector T and Natural Killer (NK) cells.
- Validated a modular approach for creating customized cytokine receptor surrogates.
Conclusions:
- A programmable IL-2 receptor surrogate ligand was successfully developed.
- This approach allows for tailored immunomodulatory functions by controlling cytokine receptor signaling.
- The modular strategy holds potential for developing novel immunotherapies.
