Engineered Bacteria for Hyperammonemia Treatment
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Solution Overview
Problem
Current therapies for hyperammonemia and urea cycle disorders are suboptimal, leading to significant unmet needs for effective, reliable, and long-term treatments, as they often require restrictive diets and side-effect prone medications, with liver transplants being a last resort.
Innovation Solution
Genetically engineered bacteria capable of reducing excess ammonia and converting it into non-toxic byproducts like arginine and citrulline, particularly in low-oxygen environments such as the gut, are introduced to modulate and treat disorders associated with hyperammonemia.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If genetically engineered bacteria are introduced to reduce ammonia, then treatment effectiveness is improved, but device complexity increases
Solution Approach 1:
The patent uses genetically engineered bacteria as intermediary agents to reduce ammonia in the gut. These bacteria serve as a biological mediator that converts toxic ammonia into non-toxic compounds (arginine, citrulline, polyamines) through engineered metabolic pathways, thereby treating hyperammonemia without requiring direct administration of complex pharmaceutical interventions or dietary management systems.
2Object-affected harmful factors
If ammonia is converted into non-toxic byproducts, then harmful factors are reduced, but loss of substance increases
Solution Approach 1:
The patent converts the harmful substance ammonia into beneficial non-toxic byproducts including arginine, citrulline, and polyamines. The engineered bacteria utilize ammonia as a substrate for biosynthetic pathways, transforming this toxic waste product into valuable amino acids and signaling molecules that can be utilized by the host, thereby eliminating toxicity while preserving nitrogen in useful forms.
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 genetically engineered bacteria effectively reduce ammonia levels and produce non-toxic byproducts, providing a more reliable and long-term treatment option for hyperammonemia-related disorders, potentially reducing the need for restrictive diets and minimizing side effects.
Implementation Method 1
capable of reducing excess ammonia, particularly in low-oxygen conditions, such as in the mammalian gut
Implementation Method 2
converting ammonia and/or nitrogen into alternate byproducts... arginine biosynthesis converts glutamate... to arginine
Data Source
AI summary
Genetically engineered bacteria, pharmaceutical compositions thereof, and methods of modulating and treating disorders associated with hyperammonemia are disclosed.