Sucrose-based cryoprotective storage of extracellular vesicles

Autor: Sierra A. Walker, Irina Davidovich, Yubo Yang, Andrew Lai, Jenifer Pendiuk Goncalves, Vatsal Deliwala, Sara Busatto, Shane Shapiro, Na’ama Koifman, Carlos Salomon, Yeshayahu Talmon, Joy Wolfram
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Extracellular Vesicle, Vol 1, Iss , Pp 100016- (2022)
Druh dokumentu: article
ISSN: 2773-0417
DOI: 10.1016/j.vesic.2022.100016
Popis: Advancements in extracellular vesicle (EV) studies necessitate the development of optimized storage conditions to ensure preservation of physical and biochemical characteristics. In this study, the most common buffer for EV storage (phosphate-buffered saline/PBS) was compared to a cryoprotective 5% sucrose solution. The size distribution and concentration of EVs from two different sources changed to a greater extent after −80 °C storage in PBS compared to the sucrose solution. Additionally, molecular surface protrusions and transmembrane proteins were more prevalent in EVs stored in the sucrose solution compared to those stored in PBS. This study demonstrates, for the first time, that distinct ring-like molecular complexes and cristae-like folded membranous structures are visible upon EV degradation. Taken together, the size, concentration, molecular surface extensions, and transmembrane proteins of EVs varied substantially based on the buffer used for −80 °C storage, suggesting that biocompatible cryoprotectants, such as sucrose, should be considered for EV studies.
Databáze: Directory of Open Access Journals