Ambient Tissue Storage via Desiccation
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Solution Overview
Problem
Current methods for storing biological samples, such as cryogenic freezing, are costly and environmentally unsustainable, and chemical fixatives used in traditional preservation methods can hinder molecular analysis.
Innovation Solution
Desiccated biological tissue samples can be stored at ambient conditions without chemical preservatives for at least six months without significant degradation, using a device with a desiccating element that maintains a predetermined humidity level, allowing for valid molecular data retrieval via Western Blots and other staining methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cryogenic storage is used to preserve tissue samples, then protein integrity and molecular analysis quality are improved, but storage cost and environmental sustainability deteriorate
Solution Approach 1:
The invention changes the storage parameter from cryogenic temperatures to ambient temperature, combined with desiccation (removal of moisture). This parameter change allows tissue sections to be stored at room temperature without significant degradation, eliminating the need for expensive cryogenic freezers while maintaining protein integrity and molecular analysis quality.
Solution Approach 2:
The invention extracts and removes moisture from the tissue sections through desiccation before storage. By removing water, which is essential for metabolic processes and protein degradation, the tissue can be preserved at ambient temperature. This extraction of moisture enables the contradiction resolution by allowing room temperature storage while maintaining protein integrity.
2Stability of the object's composition
If chemical fixatives are used to preserve tissue samples, then storage stability is improved, but compatibility with molecular techniques deteriorates
Solution Approach 1:
The invention extracts and removes moisture from the tissue sections through desiccation, eliminating the need for chemical fixatives. By removing water, which enables proteolytic degradation, the tissue is stabilized without chemical interference. This approach resolves the contradiction by providing storage stability through physical desiccation rather than chemical preservation, thereby maintaining compatibility with molecular techniques.
3Reliability
If snap-freezing is used to preserve tissue samples, then molecular data quality is improved, but storage complexity and cost increase
Solution Approach 1:
The invention changes the storage parameters from cryogenic temperatures to ambient temperature combined with desiccation. This parameter change simplifies the storage system by eliminating the need for cryogenic freezers, cold chains, and complex temperature control mechanisms, while still preserving molecular data quality through moisture removal that prevents proteolytic degradation.
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
This method provides a cost-effective and environmentally friendly way to store biological samples, maintaining protein integrity and enabling reliable molecular analysis over extended periods without the need for cryogenic or chemical preservation.
Implementation Method 1
a desiccating element capable of maintaining a predetermined level of humidity within said housing
Implementation Method 2
desiccated by a physical (although chemical means may also applied)
Implementation Method 3
When closed, the housing and the desiccating element form a sealed container not permeable to air and moisture
Data Source
AI summary
The present invention discloses a method for storing and preserving previously sectioned, snap-frozen, and desiccated biological tissue samples at ambient conditions. Also disclosed are devices and systems for ambient storage of biological tissue sections, and methods for forming said devices.