Nucleic Acid Isolation Using Cationic Detergent for Formaldehyde-Stabilized Samples
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Solution Overview
Problem
Nucleic acid isolation from samples stabilized using formaldehyde releasers is challenging due to interference with subsequent isolation processes, resulting in reduced yield and purity compared to methods specifically designed for nucleic acid stabilization.
Innovation Solution
Incorporating a cationic detergent during the lysis step of the nucleic acid isolation process from samples stabilized with formaldehyde releasers improves the yield and purity of isolated nucleic acids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If formaldehyde releaser is used for sample stabilization, then cell morphology is preserved and nucleic acids are stabilized, but nucleic acid isolation yield and purity are reduced
Solution Approach 1:
A cationic detergent is introduced as an intermediary substance that mediates between the formaldehyde releaser stabilization condition and the nucleic acid isolation process. The cationic detergent interacts with the formaldehyde releaser-stabilized sample to enable effective nucleic acid extraction, overcoming the inhibitory effect of the stabilization agent on subsequent isolation procedures.
Solution Approach 2:
The invention changes the chemical parameters of the lysis buffer by incorporating a cationic detergent with specific properties (positive charge, amphiphilic structure). This parameter change enables the lysis buffer to effectively interact with formaldehyde releaser-stabilized samples, improving nucleic acid release while maintaining the benefits of the stabilization method.
2Stability of the object's composition
If formaldehyde releaser is used for sample stabilization, then nucleic acids are preserved, but isolation process is interfered with
Solution Approach 1:
The cationic detergent serves as a mediator that bridges the formaldehyde releaser stabilization system and the nucleic acid isolation system. It interacts with both the stabilization agent and the nucleic acids, enabling smooth transition from stabilization to isolation without interference.
Solution Approach 2:
The invention extracts or removes the interfering effect of the formaldehyde releaser from the isolation process by introducing a cationic detergent that specifically targets and overcomes the inhibition, allowing the isolation process to proceed efficiently despite the presence of the stabilization agent.
3Quantity of substance
If complete cell lysis is performed for nucleic acid isolation, then nucleic acids are released, but cell morphology is destroyed
Solution Approach 1:
The invention changes the lysis conditions by using a cationic detergent that provides gentle, selective lysis. The cationic detergent modifies the lysis mechanism to release nucleic acids while preserving cell morphology, achieving a parameter change in the lysis process that balances nucleic acid release with morphological preservation.
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 use of a cationic detergent significantly enhances the yield and purity of nucleic acids, particularly RNA, from samples stabilized with formaldehyde releasers, facilitating more effective nucleic acid isolation.
Implementation Method 1
the isolation of the nucleic acids from the stabilized sample involves the use of at least one cationic detergent during lysis
Data Source
AI summary
The present invention pertains to a method for isolation and purification of nucleic acids from a stabilized sample or portion or fraction thereof, wherein the sample stabilization involved the use of at least one formaldehyde releaser and wherein the isolation of the nucleic acids from the stabilized sample or portion or fraction thereof involves the use of at least one cationic detergent during lysis.