FRET Assays for SERCA-PLB Complex Modulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods are inadequate for reliably identifying molecules that modulate the sarco/endoplasmic reticulum calcium ATPase (SERCA) or the SERCA-phospholamban (PLB) complex, due to the complexity of membrane proteins and strong interactions that are difficult to disrupt, limiting high-throughput screening and understanding of their interactions.
Innovation Solution
The development of fluorescence resonance energy transfer (FRET) assays optimized for high-throughput screening, which involve labeling SERCA and PLB with chromophores and measuring changes in fluorescence lifetime or energy transfer to detect modulation by test compounds, both in the presence and absence of a membrane.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional methods are used to identify molecules that modulate SERCA or SERCA-PLB complex, then the complexity of membrane proteins and strong interactions make reliable identification difficult, but high-throughput screening capability is needed
Solution Approach 1:
The patent introduces FRET (fluorescence resonance energy transfer) as an intermediary mechanism to detect SERCA and SERCA-PLB complex interactions. By labeling SERCA and PLB with fluorescent chromophores (donor and acceptor), the system translates complex protein-protein interactions into measurable fluorescence signals, enabling reliable detection in high-throughput formats
Solution Approach 2:
The patent replaces traditional mechanical or biochemical assay methods with an optical detection system. Instead of relying on complex biochemical readouts, the invention uses fluorescence resonance energy transfer - an optical phenomenon - to detect molecular interactions, thereby enabling automation and high-throughput screening while maintaining reliability
2Measurement precision
If SERCA and PLB are labeled with chromophores for FRET detection, then sensitivity and reproducibility are enhanced, but the complexity of the assay system increases
Solution Approach 1:
The patent utilizes changes in fluorescence parameters (intensity, lifetime, wavelength) as SERCA and PLB interact. By monitoring these optical parameter changes through FRET, the system achieves high measurement precision and sensitivity while the complexity is managed through the well-established nature of fluorescence detection technology
3Reliability
If FRET assays are performed in the presence of membrane, then physiological relevance is improved, but technical difficulty and complexity increase
Solution Approach 1:
The patent creates a simplified model system that copies the essential features of the physiological environment. By using membrane vesicles or liposomes reconstituted with SERCA and PLB, the invention captures the physiological membrane environment while maintaining a controlled, simplified system that is amenable to FRET detection and high-throughput screening
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
Enables consistent and reliable identification of molecules that modulate SERCA or the SERCA-PLB complex, facilitating the discovery of compounds for treating SERCA- or PLB-related diseases through enhanced sensitivity and reproducibility in a membrane environment.
Implementation Method 1
fluorescence resonance energy transfer (FRET) assays optimized for high-throughput screening
Implementation Method 2
labeling SERCA and PLB with chromophores and measuring changes in fluorescence lifetime
Data Source
AI summary
Provided herein are methods for identifying molecules capable of modulating SERCA, the SERCA-PLB complex or the microenvironment of the complex. An exemplary assay provided herein is fluorescence resonance energy transfer (FRET). Also provided herein are FRET assays that are optimized for high-throughput screening (HTS) for identifying small molecules that modulate SERCA or the SERCA-PLB complex. Further provided are kits for carrying out said methods for identifying molecules.