Modified MicroSecure Vitrification: A Safe, Simple and Highly Effective Cryopreservation Procedure for Human Blastocysts
March 2nd, 2017
13.3K views
MicroSecure Vitrification was developed as a non-commercial, aseptic closed vitrification device system that is compliant with FDA good manufacturing and tissue-handling practices. Due to the withdrawal of hydrophobic plugged embryo straws from the industry, the vitrification procedure was modified to include an inner seal before the standard internal cotton plug.
Overview
The MicroSecure Vitrification method is designed to provide a safe and effective aseptic closed vitrification procedure for human embryos. This technique minimizes quality control variables, ensuring reliable and reproducible success across different laboratories.
Key Study Components
Area of Science
- Embryo Vitrification
- Reproductive Biology
- Quality Control in Embryology
Background
- MicroSecure Vitrification is compliant with FDA good manufacturing practices.
- The method addresses the withdrawal of hydrophobic plugged embryo straws.
- It aims to reduce technical variations in embryo handling.
- Utilizes FDA-approved items to simplify the procedure.
Purpose of Study
- To develop a reliable vitrification method for human embryos.
- To enhance the success rates of embryo preservation and transfer.
- To provide a straightforward technique for biologists.
Methods Used
- Use of an internally labeled ionomeric storage straw and sterile flexipet.
- Creation of an internal seal using a tabletop impulse sealer.
- Step-by-step embryo handling under a stereomicroscope.
- Cryo-preservation and warming techniques for embryo transfer.
Main Results
- High levels of live births per cycle achieved using this method.
- Success rates exceed national averages for implantation and live births.
- Demonstrated effectiveness with or without pre-implantation genetic testing.
- Consistent results across different patient populations.
Conclusions
- The MicroSecure Vitrification method is a significant advancement in embryo preservation.
- It offers a reliable and user-friendly approach for laboratories.
- This technique can improve outcomes in reproductive medicine.
Frequently Asked Questions
What is MicroSecure Vitrification?
MicroSecure Vitrification is a method for preserving human embryos using a closed, aseptic system that complies with FDA standards.
How does this method improve embryo handling?
It minimizes technical variations and simplifies the procedure, making it easier for biologists to perform.
What are the main advantages of this technique?
The main advantages include enhanced reliability, reproducibility, and higher success rates in embryo transfer.
Is specialized equipment required for this method?
No, the method adapts commonly used FDA-approved items, eliminating the need for specialized devices.
What success rates have been observed?
The method has shown higher success rates than the national average for both implantation and live birth rates.
Can this method be used with pre-implantation genetic testing?
Yes, it has been effective with or without pre-implantation genetic testing.
Executive Industry Relevance
MicroSecure Vitrification addresses critical quality control gaps in embryo cryopreservation by minimizing technical variation between operators and laboratories. Its aseptic, closed-system design using FDA-compliant components enhances reproducibility and reduces risk in assisted reproductive technology workflows. The method supports reliable embryo preservation, directly impacting clinical success rates and enabling scalable implementation in fertility centers.
Strategic Applications in Biopharma R&D
Early Discovery & Target Validation
- Scientific Value: Enables consistent embryo handling for studying developmental pathways under controlled cryo-conditions.
- Operational Value: Reduces procedural variability, improving data consistency in preclinical embryotoxicity and teratogenicity screening.
Screening & Assay Development
- Scientific Value: Provides a standardized platform for evaluating cryoprotectant efficacy on embryo viability and developmental competence.
- Operational Value: Supports high-throughput cryo-assay development through simplified, repeatable loading and sealing steps.
Translational & Preclinical Research
- Scientific Value: Maintains embryo integrity through vitrification/warming cycles, enabling longitudinal studies of gene expression and epigenetic stability.
- Operational Value: Facilitates biobanking of genetically modified embryos for disease model preservation and cross-laboratory sharing.
Pipeline & Workflow Integration
The method integrates into reproductive toxicology pipelines by providing a reliable cryopreservation step between embryo generation and downstream phenotypic analysis.
- Discovery Biology: Enables hypothesis testing on cryo-stress responses by ensuring uniform embryo viability across experimental groups.
- Screening: Delivers quantitative survival and developmental readouts essential for comparing compound effects in embryo-based assays.
- Analytics: Generates measurable outcomes such as blastocyst survival rates and re-expansion metrics for statistical comparison.
- Translational Research: Supports continuity from in vitro embryo production to preclinical transfer models by preserving developmental potential.
- Enterprise Reuse: Uses widely available, low-cost components, allowing adoption across multiple sites without proprietary device dependency.
Operational & Enterprise Impact
- Scientific Value: Increases predictive confidence by reducing noise from technical variation in embryo handling.
- Operational Value: Enhances standardization and scalability through simplified training and minimal equipment needs.
- Strategic Value: Improves go/no-go decisions in embryo-based screening by ensuring high post-warming viability (>95%).
- Portfolio Impact: Enables risk-adjusted advancement of embryo-based models through reliable biobanking and recovery.
Implementation Considerations
- Requires basic embryology training and stereomicroscopy skills for embryo manipulation.
- Needs a tabletop impulse sealer for internal weld seals and standard cryogenic storage equipment.
- Demands consistent labeling and sealing protocols to maintain traceability and prevent cross-contamination.
- Must account for flexipet preparation timing to avoid solution dilution or embryo exposure during transfer.
- Limited by the need for manual dexterity in pipetting embryos, which remains a training bottleneck.
Biopharma FAQs
Why does internal weld sealing matter for embryo vitrification?
Internal weld sealing prevents fluid leakage and maintains a closed system during cryostorage, ensuring embryo security and reducing contamination risk. This step compensates for cotton plug limitations in semen straws while preserving device integrity. It supports reproducible outcomes by minimizing technical variation between users.
How does flexipet loading improve embryo handling consistency?
Prefilling the flexipet with precise volumes of cryosolutions enables standardized embryo washing and reduces procedural variability. The method ensures accurate solution exchange by controlling aspiration and expulsion steps under visualization. This consistency supports reliable survival rates across different operators and laboratories.
What quantitative measurements enable post-warming viability assessment?
Blastocyst survival is assessed by re-expansion and intact morphology after warming, using the Modified Gardner Grading System. Key metrics include less than 10% herniation for full blastocysts and evaluation of hatching status. These measurements provide objective, comparable endpoints for cryopreservation efficacy.
Why are replication requirements critical for cross-functional collaboration?
Replication ensures that high survival rates (>95%) and pregnancy outcomes are consistently achievable across different technicians and lab settings. The method’s simplicity and standardized steps reduce user-dependent variability, enabling reliable technology transfer. This supports multi-site studies and regulatory-compliant embryo banking initiatives.
What statistical analysis capabilities are required before implementing this vitrification method?
Implementation requires survival rate analysis using binomial or proportion tests to confirm embryo recovery exceeds predefined thresholds (e.g., >95%). Comparative analysis against historical controls or national benchmarks supports performance validation. These analyses help establish method reliability and justify adoption in clinical or research workflows.
