Nppb Blocking Agents for Pruritus Treatment

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Solution Overview

Problem

Current treatments for chronic itch conditions, such as those associated with psoriasis, atopic dermatitis, and systemic conditions like renal failure, are inadequate, as existing therapies often fail to effectively manage pruritus, leading to a significant reduction in quality of life.

Innovation Solution

Administering a natriuretic polypeptide B (Nppb) blocking agent, which can be an antagonist, inhibitor, or antagonist conjugate, to block Nppb activity, thereby reducing or preventing itch in mammals by inhibiting Nppb signaling or production, using methods like nucleic acid interference or receptor antagonism.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If existing therapies are used to treat chronic itch conditions, then treatment is provided, but the therapies fail to effectively manage pruritus

Engineering Contradiction:
Improveeffectiveness of itch managementVSAvoidquality of life
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The patent extracts and targets the specific molecular pathway (Nppb signaling) that mediates itch transmission. By using Nppb blocking agents that specifically inhibit this pathway, the treatment isolates the therapeutic action to the relevant biological mechanism, improving effectiveness without affecting other physiological processes.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent changes the therapeutic parameter from general anti-itch mechanisms to specific Nppb pathway inhibition. By targeting the Nppb-Npral signaling axis with selective blocking agents, the treatment achieves superior itch management through precise molecular parameter control rather than broad-spectrum approaches.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If Nppb blocking agents are administered to block Nppb activity, then itch is reduced or prevented, but potential neurotoxicity may occur

Engineering Contradiction:
Improveefficacy in treating pruritusVSAvoidneurotoxicity
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies local quality by designing blocking agents with specific affinity for the Npral receptor isoform expressed in itch-sensing neurons. This selective binding ensures that the therapeutic effect is localized to pruritus pathways while sparing other neural functions, thereby reducing neurotoxicity risk.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent uses Nppb blocking agents as intermediary molecules that specifically intercept the Nppb-Npral signaling interaction. These agents act as selective mediators that block itch transmission without disrupting other neurotransmitter systems, reducing the risk of neurotoxic side effects.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS10583173B2Methods of treating or preventing pruritis by blocking natriuretic polypeptide b
Publication Date: 2020.03.10 THE GOVERNMENT OF THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY DEPARTMENT OF HEALTH & HUMAN SERVICES
  • US10583173B2 patent drawing
  • US10583173B2 patent drawing
  • US10583173B2 patent drawing

AI summary

Disclosed is a method of treating, reducing, or preventing pruritis in a mammal, the method comprising administering at least one natriuretic polypeptide b (Nppb) blocking agent to a mammal in an amount effective to treat or prevent pruritis in the mammal. An in vitro method of identifying a compound that inhibits Nppb activity is also disclosed.