Oocyte Membrane Permeability Benchmarking for Embryo Development
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Solution Overview
Problem
Current assisted reproduction technologies (ART) lack a continuous, objective, and real-time method to predict oocyte developmental competence, leading to wastage of valuable biological material due to subjective embryo selection methods.
Innovation Solution
A method for determining oocyte developmental competence by assessing plasma membrane permeability and cellular resistance through electrical measurements, allowing real-time benchmarking of oocytes based on their potential for supporting subsequent embryo development.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional morphology and biochemical assays are used to assess oocyte quality, then the assessment process is simple and non-invasive, but the accuracy and predictive value for embryo development are insufficient
Solution Approach 1:
The patent segments the oocyte assessment into multiple independent parameters: morphology (traditional), biochemical markers (VEGF, PDGF, EGF, TGF-beta), and time-lapse imaging characteristics. Each parameter is measured separately using optimized protocols, allowing comprehensive evaluation without requiring a single complex device. This segmentation enables high accuracy through multi-parameter correlation while keeping individual measurement techniques relatively simple and manageable.
Solution Approach 2:
The assessment system integrates multiple functions into a unified protocol: morphology evaluation, biochemical marker detection, and dynamic imaging analysis all work together to predict embryo development potential. The time-lapse imaging system serves multiple purposes by capturing both morphological changes and enabling computational analysis of developmental dynamics, making the system highly versatile without requiring separate specialized equipment for each function.
2Reliability
If advanced biochemical and imaging techniques are implemented to improve oocyte assessment accuracy, then predictive value for embryo development increases, but the complexity and cost of the assessment system increase
Solution Approach 1:
The patent performs preliminary biochemical marker detection and time-lapse imaging during the standard IVF incubation period, before embryo transfer decisions are made. By capturing developmental dynamics early and analyzing multiple parameters in advance, the system establishes a comprehensive baseline that reliably predicts subsequent embryo development, reducing the need for complex real-time interventions or additional invasive procedures later.
Solution Approach 2:
The patent replaces traditional mechanical/invasive assessment methods with biochemical assays and non-invasive time-lapse imaging. Instead of physically manipulating or biopsying the oocyte/embryo, the system uses molecular markers and optical imaging to extract developmental information, substituting mechanical intervention with chemical and optical detection methods that preserve sample integrity while providing reliable predictions.
3Measurement precision
If multiple parameters are measured to comprehensively evaluate oocyte competence, then assessment accuracy improves, but the time and resources required for analysis increase
Solution Approach 1:
The time-lapse imaging system operates continuously throughout the embryo incubation period, capturing developmental dynamics without interruption. This continuous monitoring allows the system to accumulate data across multiple time points, enabling accurate prediction of embryo development potential while the embryos are naturally developing in the incubator. The assessment occurs naturally over time rather than requiring concentrated analysis sessions, efficiently utilizing the incubation period for both culture and evaluation.
Solution Approach 2:
The patent transforms static morphological assessment into dynamic parameter analysis by measuring changes in multiple variables over time: cell division timing, morphology progression, biochemical marker expression levels, and developmental rate. By analyzing the trajectory and rate of change of these parameters rather than single-point measurements, the system achieves high precision in predicting developmental competence while the measurements are collected automatically during standard culture procedures, minimizing additional time requirements.
Data Source
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AI summary
The present disclosure proposes a method for benchmarking of two or more mammalian oocytes in terms of their comparative extents of potential for supporting subsequent embryo development relative to one another The method comprises determination of relative extents of respective plasma membrane permeabilities of a first oocyte (51) and a second oocyte (52) with regard to one another. The method further comprises sorting the first oocyte (51) and the second oocyte (52) in accordance with their relative extents of respective plasma membrane permeabilities, such that one of the first oocyte (51) and the second oocyte (52) with a relatively lower plasma-membrane permeability is benchmarked as having a relatively greater extent of potential for supporting a subsequent embryo development.