IFN-λ Receptor Complex Segmentation for Antiviral Signaling
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Solution Overview
Problem
Current cytokine receptor technologies lack sufficient receptors to realize the full potential of IL-10 homologue signaling, leading to incomplete biological activities and clinical needs for novel cytokines, receptors, agonists, and antagonists.
Innovation Solution
Identification and characterization of novel human genes encoding IFN-λ1, IFN-λ2, IFN-λ3, and their specific receptor complex, comprising IFN-λR1 (CRF2-12) and IL-10R2 (CRF2-4), which induce antiviral protection through a novel ligand-receptor pair mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing cytokine receptor technologies are used, then current biological activities can be maintained, but the full potential of IL-10 homologue signaling cannot be realized
Solution Approach 1:
The receptor system is segmented into two distinct subunits: a novel receptor component (CRF2-12) and a shared receptor component (IL-10R2). This segmentation allows the system to achieve complete signaling potential for IL-10 homologues while maintaining reliable biological activity through the coordinated function of specialized and shared components.
Solution Approach 2:
The shared receptor component (IL-10R2) serves multiple functions by being common to different receptor complexes (IL-10, IL-22, and IFN-λ receptors). This universality enables the system to realize full signaling potential across multiple cytokine families while maintaining reliable activity through the conserved functional element.
2Reliability
If a novel ligand-receptor pair is introduced, then antiviral protection can be induced, but the complexity of the receptor system increases
Solution Approach 1:
The novel receptor (CRF2-12) is merged with the existing shared receptor component (IL-10R2) to form a functional receptor complex. This combining approach enables induction of antiviral protection through the novel ligand-receptor pair while managing complexity by integrating a new element with an existing functional framework rather than creating a completely new system.
3Adaptability or versatility
If six new IL-10 homologue ligands are identified, then signaling diversity is improved, but the number of required receptors increases
Solution Approach 1:
The shared receptor component (IL-10R2) is designed with multi-functionality, serving as a common element across multiple receptor complexes that bind different IL-10 homologue ligands. This universality allows the system to accommodate six new ligands with diverse signaling capabilities while reducing the overall receptor inventory requirement by reusing the same shared component.
Data Source
AI summary
A novel IFN-α/β independent ligand receptor system which upon engagement leads, among other things, to the establishment of an anti-viral state is disclosed. Further disclosed are three closely positioned genes on human chromosome 19 that encode distinct but highly homologous proteins, designated IFN-λ1, IFN-λ2, IFN-λ3, based, inter alia, in their ability to induce antiviral protection. Expression of these proteins is induced upon viral infection. A receptor complex utilized by all three IFN-λ proteins for signaling is also disclosed. The receptor complex is generally composed of two subunits, a novel receptor designated IFN-λR1 or CRF2-12, and a second subunit, IL-10R2 or CRF2-4, which is also a shared receptor component for the IL-10 and IL-22 receptor complexes. The gene encoding IFN-λR1 is generally widely expressed, including many different cell types and tissues. Expression of these proteins is induced by immune events, including, for example, upon viral infection. Apoptotosis may also be induced under effective conditions.