IL-3 Signaling Reprograms Microglia to Clear Alzheimer's Aggregates

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Solution Overview

Problem

Current understanding of glial cell interactions in Alzheimer's disease, particularly regarding β-amyloid and neurofibrillary tau accumulation and clearance, is limited, and existing therapies are ineffective in addressing the underlying pathological processes.

Innovation Solution

Administration of an Interleukin 3 Receptor (IL3R) agonist, such as an IL3 peptide or nucleic acid encoding an IL3 peptide, to modulate IL-3 signaling in the brain, promoting microglial reprogramming and clearance of β-amyloid and tau aggregates.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If existing therapies are used to treat Alzheimer's disease, then treatment is provided, but they are ineffective in addressing the underlying pathological processes of β-amyloid and tau accumulation

Engineering Contradiction:
Improvetherapeutic effectivenessVSAvoidβ-amyloid and tau accumulation
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent uses IL-3 as an intermediary substance to mediate between astrocytes and microglia. Astrocytes produce IL-3, which acts as a signaling molecule to reprogram microglia, enabling them to effectively clear β-amyloid and tau aggregates. This intermediary approach addresses the failure of existing therapies by introducing a new molecular mediator that restores proper glial cell communication and function.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent changes the functional state of microglia through IL-3 signaling, transforming them from an ineffective state to an activated, disease-fighting state. This parameter change in microglial activation status enables them to perform their clearing function effectively, directly addressing the pathological accumulation of β-amyloid and tau that existing therapies fail to resolve.

Inventive Principle:
Principle #35Parameter changes

2Ease of manufacture

If glial cell interactions are not targeted, then current treatment approaches are simple, but the underlying pathological processes of Alzheimer's disease remain unaddressed

Engineering Contradiction:
Improvetreatment simplicityVSAvoiddisease pathology clearance
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

By introducing IL-3 as a measurable and targetable intermediary molecule, the patent creates a specific therapeutic target that bridges the gap between treatment simplicity and effectiveness. The IL-3 signaling pathway provides a concrete molecular target that can be addressed with relatively simple therapeutic interventions while effectively clearing disease pathology.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Stability of the object's composition

If microglia are not reprogrammed through IL-3 signaling, then the glial cell ecosystem remains in its natural state, but microglia cannot effectively cluster and clear β-amyloid and tau aggregates

Engineering Contradiction:
Improvemicroglial functionVSAvoidaggregate accumulation
Core Design Contradiction:
Stability of the object's compositionVSObject-generated harmful factors

Solution Approach 1:

The patent applies parameter changes to transform microglia from a resting state to an activated state through IL-3 signaling. This parameter change in microglial activation enables them to dynamically respond to and clear β-amyloid and tau aggregates, resolving the contradiction between maintaining natural glial stability and achieving effective pathology clearance.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent converts the harmful accumulation of β-amyloid and tau aggregates into a beneficial clearing process by using IL-3 signaling to activate microglia. The pathological aggregates that cause harm become the target of microglial clearance activity, transforming the harmful situation into a beneficial therapeutic outcome.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

Data Source

PatentUS20240148832A1Astrocyte Interleukin-3 Reprograms Microglia and Limits Alzheimer`s Disease
Publication Date: 2024.05.09 THE GENERAL HOSPITAL CORP
  • US20240148832A1 patent drawing
  • US20240148832A1 patent drawing
  • US20240148832A1 patent drawing

AI summary

Described herein are compositions and methods targeting IL-3 signaling for reducing Alzheimer's disease (AD)-related pathology.