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Grant Details

Grant Number: 5R33CA204510-03 Interpret this number
Primary Investigator: Aksan, Alptekin
Organization: University Of Minnesota
Project Title: Validation of a Room-Temperature Storage Technique for Plasma/Serum Biospecimens
Fiscal Year: 2018


 DESCRIPTION (provided by applicant): Currently, 600 million liquid biospecimens (serum, plasma, saliva, urine, etc.) are stored in biorepositories across the world for future research, mainly for biomarker discovery and verification. Most of these biospecimens are stored in -80°C freezers (each freezer costs $30-50k) each one of which uses 24 kWh/day electricity (costing over $2,400/year/freezer in electricity use in the U.S.). The maintenance costs alone can be as high as $6,000/year/freezer. Furthermore, the freezers need to be connected to an un-interrupted power grid (with backup generators), housed in a controlled environment (in a freezer-farm) and supervised 24/7 by personnel. The freezer farms also need "backup freezers" for breakdown preparedness. Liquid nitrogen storage cost structure is similar. Furthermore, most cancer biomarkers are susceptible to damage when frozen. Our long-term goal is to eliminate the requirement for frozen state storage and develop the techniques to store serum biospecimens at room temperature using isothermal vitrification technology. Isothermal vitrification is the process by which liquids doped with sugars are desiccated to a "glass" (a very viscous fluid). In this state, biochemical reactions are halted, degradation of the specimen is stopped, and macromolecules are stabilized in their native states. In this R33 application we intend to validate the technology we have developed through a previous R21 grant in a systematic manner (and independently by three organizations) as a last step before commercialization. We will accomplish our goal by achieving the following aims: * Specific Aim 1: Validate 4 selected proteinaceous biomarkers in human serum samples using the novel isothermal vitrification matrix developed in the previous R21 grant, * Specific Aim 2: Validate the stability of an array of 300+ proteinaceous biomarkers in human serum stored using the novel isothermal vitrification matrix, * Specific Aim 3: Conduct independent validation of the technology developed here for potential adoption in the Mayo Clinic Biobank in Rochester, MN and the National Cancer Center Biobank in Tokyo, Japan for storage of serum samples.


FTIR Analysis of Molecular Changes Associated with Warming Injury in Cryopreserved Leukocytes.
Authors: Wang M. , Karlsson J.O.M. , Aksan A. .
Source: Langmuir : the ACS journal of surfaces and colloids, 2019-06-11; 35(23), p. 7552-7559.
EPub date: 2018-11-16.
PMID: 30399315
Related Citations

Dextranol: An inert xeroprotectant.
Authors: Jones B.J. , Mahajan A. , Aksan A. .
Source: PloS one, 2019; 14(9), p. e0222006.
EPub date: 2019-09-06.
PMID: 31490977
Related Citations

Adsorbing/dissolving Lyoprotectant Matrix Technology for Non-cryogenic Storage of Archival Human Sera.
Authors: Solivio M.J. , Less R. , Rynes M.L. , Kramer M. , Aksan A. .
Source: Scientific reports, 2016-04-12; 6, p. 24186.
EPub date: 2016-04-12.
PMID: 27068126
Related Citations

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