5-HT1B Receptor Agonists for Satellite Cell Pool Maintenance
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Solution Overview
Problem
The regenerative capacity of satellite cells, crucial for muscle repair and maintenance, declines with age and is exhausted in conditions like Duchenne Muscular Dystrophy, leading to muscle loss and dysfunction, for which existing technologies lack effective solutions.
Innovation Solution
Stimulating the 5-hydroxytryptamine 1B receptor using agents like fluoxetine and vortioxetine, which promote satellite cell self-renewal, differentiation, and prevent pool exhaustion, thereby enhancing muscle regeneration and slowing muscular dystrophy progression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If satellite cells are continuously activated for muscle repair, then muscle regeneration is improved, but satellite cell pool exhaustion occurs
Solution Approach 1:
The patent applies dynamics by enabling satellite cells to dynamically switch between quiescent and activated states through 5-HT1B receptor stimulation. The system allows cells to be recruited for regeneration when needed while maintaining a reservoir of quiescent cells, creating a dynamic balance that prevents exhaustion while sustaining regenerative capacity across multiple injury cycles
Solution Approach 2:
The patent changes the physiological parameter of satellite cell activation through 5-HT1B receptor agonists. By modulating receptor activation status, the system alters cell behavior from quiescence to proliferation and differentiation, enabling controlled regeneration that preserves the stem cell pool while improving muscle repair outcomes
2Reliability
If satellite cells proliferate and differentiate to repair muscle, then muscle function is restored, but self-renewal capacity is reduced
Solution Approach 1:
The patent applies preliminary action by stimulating 5-HT1B receptors before complete satellite cell exhaustion occurs. This early intervention promotes controlled self-renewal and differentiation cycles, ensuring that sufficient quiescent cells remain in the pool while still achieving effective muscle repair and function restoration
Solution Approach 2:
The patent implements feedback control through 5-HT1B receptor signaling that responds to muscle injury signals. The receptor activation creates a regulated response that balances differentiation (for repair) with self-renewal (for pool maintenance), preventing runaway consumption of the satellite cell pool while ensuring adequate regeneration
Data Source
AI summary
The present invention relates to the field of muscle regeneration, and more particularly to the replenishment of the in vivo muscle stem cells pool. It more specifically relates to a 5-hydroxytryptamine B1 receptor-stimulating agent, and to a composition comprising said agent, for use as i) a promoter of satellite cells self-renewal and/or differentiation, and/or ii) an agent preventing and/or inhibiting the satellite cells pool exhaustion. The invention further encompasses therapeutic and screening methods.