Intron-Containing BKCa Channel mRNA Modulation

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Solution Overview

Problem

The functional diversity among BKCa channels in neurons is not fully resolved, and the expression and subcellular distribution patterns of splice variants are not adequately understood, which hinders the study, diagnosis, and therapeutic treatment of related pathologies.

Innovation Solution

Modulating the cytoplasmic level of intron-containing KCNMA1 mRNA in neurons by decreasing or increasing its expression using siRNA molecules or splicing activators/inhibitors, thereby altering the distribution and function of BKCa channels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If alternative splicing of KCNMA1 gene is used to generate functional diversity in BKCa channels, then channel functional diversity is improved, but understanding and characterization of splice variants becomes more difficult

Engineering Contradiction:

Improvechannel functional diversityVSAvoidcharacterization of splice variants

Core Design Contradiction:

Adaptability or versatilityVSDifficulty of detecting and measuring

Solution Approach 1:

The patent segments the complex splicing problem by identifying and characterizing specific intron-containing mRNA variants (particularly intron 16) separately from other splice variants. This segmentation allows focused study of individual variants that contribute to functional diversity without being overwhelmed by the complexity of all possible splice combinations.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent uses intron-containing mRNAs as intermediary molecules to study the relationship between splicing and channel function. These intron-containing variants serve as measurable intermediaries that link genomic splicing events to functional channel properties, making the characterization process more tractable.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If intron-containing KCNMA1 mRNA is transported to cytoplasm and translated, then local protein synthesis in dendrites is improved, but control over translation timing and location becomes more complex

Engineering Contradiction:

Improvelocal protein synthesisVSAvoidcontrol mechanism

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent demonstrates that intron-containing mRNAs are transported to dendrites in advance of synaptic stimulation, where they are stored in a translationally inactive state. This preliminary action allows the mRNA to be positioned at the site of needed protein synthesis without premature translation, enabling rapid local protein production when synaptic activity occurs.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent reveals dynamic regulation of intron-containing mRNA translation in response to synaptic activity. The translation of these mRNAs is controlled dynamically - inactive during resting states and activated upon synaptic stimulation - allowing the system to respond flexibly to neuronal activity patterns while maintaining control over when and where protein synthesis occurs.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS8536146B2Cytoplasmic BK<sub>Ca </sub>channel intron-containing mRNAs contribute to the intrinsic excitability of hippocampal neurons

Publication Date: 2013.09.17 THE TRUSTEES OF THE UNIV OF PENNSYLVANIA

AI summary

The invention relates to a method of modulating neuronal function by modulating the cytoplasmic level in a neuron of an intron-containing mRNA. The methods are useful in diagnostic, research and therapeutic applications.