Fc Receptor Bridging Conjugate for Protein Aggregate Clearance
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Solution Overview
Problem
Current treatments for aggregate-associated diseases such as Alzheimer's Disease are limited to symptomatic management and lack effective therapeutic options for clearing protein aggregates, which are central to these conditions.
Innovation Solution
A conjugate comprising a peptide that competes with the Fc fragment of IgG for binding to Fc receptors and a targeting moiety that specifically binds to protein aggregates, enhancing phagocytosis by immune cells such as macrophages and microglial cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current symptomatic management treatments are used for aggregate-associated diseases, then patient symptoms can be managed, but the protein aggregates cannot be cleared effectively
Solution Approach 1:
The patent uses Fc receptors as intermediaries to bridge the connection between immune cells and protein aggregates. The conjugate design includes a targeting moiety that binds to protein aggregates and an Fc region that binds to Fc receptors on immune cells, creating a mediator system that enables immune cells to clear aggregates that they cannot recognize or bind directly.
Solution Approach 2:
The invention creates a composite structure by conjugating a targeting moiety (such as an antibody variable region or peptide) with an Fc region. This composite molecule combines the specific binding capability of the targeting moiety with the immune cell recruitment capability of the Fc region, enabling both aggregate recognition and immune cell activation in a single therapeutic agent.
2Adaptability or versatility
If no specific therapeutic option is used, then treatment can be maintained, but aggregate clearance capability remains absent
Solution Approach 1:
The Fc region serves multiple functions simultaneously: it binds to Fc receptors on various immune cell types (macrophages, microglial cells, neutrophils), activates complement systems, and recruits different immune mechanisms. This multi-functionality allows a single conjugate design to clear different types of protein aggregates through multiple immune pathways.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The conjugate effectively recruits and activates immune cells to clear protein aggregates, potentially offering a novel therapeutic approach for diseases like Alzheimer's and other amyloidosis-related conditions.
Implementation Method 1
a peptide that competes with an Fc fragment of an IgG for binding to an Fc receptor
Implementation Method 2
a targeting moiety that targets molecular aggregates
Implementation Method 3
enhancing phagocytosis by immune cells such as macrophages and microglial cells
Data Source
AI summary
In some embodiments, the disclosure provides for a conjugate comprising: a) a peptide that competes with an Fc fragment of an IgG for binding to an Fc receptor; and b) a targeting moiety that targets molecular aggregates. In some embodiments, the disclosure provides for methods of using the conjugates for treating a disease or disorder associated with aggregate formation.