Multidimensional AUC Mapping for In Situ Nanoscale System Characterization
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Solution Overview
Problem
There is a lack of standardized protocols for characterizing nanomedicine products at a physicochemical and biological level, necessitating a technique that can assess multiple parameters simultaneously, maintain mass balance, and perform in situ analysis under varying solution conditions without dilution.
Innovation Solution
A computer-implemented method using analytical ultracentrifugation (AUC) to generate a multi-dimensional sedimentation analysis map, incorporating parameters like absorption, refraction, density, and degradation kinetics, allowing for the characterization of nanoscale systems (NSS) and nanoscale drug delivery systems (NDDS) under native biological conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple parameters are measured simultaneously to characterize nanoscale systems, then measurement precision and comprehensiveness are improved, but device complexity and experimental setup complexity increase
Solution Approach 1:
The analytical ultracentrifugation system is configured to perform multiple measurement functions simultaneously - measuring absorption, refraction, density, and degradation kinetics all within a single instrument and experimental setup. This multi-functional approach allows comprehensive characterization of nanoscale systems without requiring separate specialized devices for each parameter, thereby improving measurement precision while controlling device complexity.
2Measurement precision
If in situ analysis is performed under native biological conditions without dilution, then measurement precision and mass balance are maintained, but the required equipment capabilities and method complexity increase
Solution Approach 1:
The method utilizes parameter changes in the ultracentrifugation system - specifically varying rotor speeds and measurement conditions - to enable in situ analysis of nanoscale systems under native biological conditions. By adjusting these parameters, the system can maintain mass balance and avoid dilution while still achieving the necessary measurements, thus improving measurement precision without requiring overly complex equipment.
3Reliability
If comprehensive physicochemical characterization is performed to ensure quality and safety, then reliability and regulatory compliance are improved, but measurement time and productivity are reduced
Solution Approach 1:
The analytical ultracentrifugation system performs continuous measurement of multiple parameters (absorption, refraction, density, degradation kinetics) simultaneously throughout the experiment. This continuous multi-parameter acquisition allows comprehensive physicochemical characterization to be completed in a single continuous run rather than requiring multiple separate experiments, thereby improving reliability while maintaining productivity.
4Reliability
If standardized protocols are established for nanomedicine characterization, then reliability and regulatory approval are improved, but the initial complexity of protocol development and implementation increases
Solution Approach 1:
The comprehensive characterization protocol is segmented into distinct measurable parameters (absorption, refraction, density, degradation kinetics), each of which can be independently optimized and validated. This segmentation allows the complex standardization task to be broken down into manageable components, making the protocol development more systematic and implementable while maintaining the reliability needed for regulatory approval.
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 method provides a calibration-free, reliable, and time-efficient characterization of NSS and NDDS, capable of determining properties such as size, concentration, dispersity, integrity, and stability under diverse solution conditions, maintaining mass balance and integrity.
Implementation Method 1
AUC relies upon first-principle hydrodynamic and thermodynamic information; it therefore may be applied to determine the biophysical properties of many types of particles across a wide range of particle concentrations and sizes. AUC typically relies on two basic types of sedimentation experiments: equilibrium experiments and sedimentation velocity experiments.
Implementation Method 2
analytical ultracentrifugation (AUC), which emerged at the beginning of last century as a classical analytical technique. AUC has been used primarily by the biophysics community for quantitative assessment of the solution state, shape and size of proteins
Data Source
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AI summary
The invention relates to a method for determining the physicochemical properties of a nanoscale system (NSS) using analytical ultracentrifugation), comprising the steps of generating a multi-dimensional sedimentation analysis map associated with the NSS of interest; selecting sample-dependent parameters; determining sedimentation coefficient value/parameter in the sample; inserting sample sedimentation coefficient values onto the multi-dimensional sedimentation analysis map to obtain a NSS sample map value; and inferring from the NSS sample map value the physicochemical properties of the NSS sample. Furthermore, the invention relates to a system for performing the method, a computer program product and a computer readable storage medium.