Beneficial effect of intracellular trehalose on the membrane integrity of dried mammalian cells

被引:153
作者
Chen, T [1 ]
Acker, JP
Eroglu, A
Cheley, S
Bayley, H
Fowler, A
Toner, ML
机构
[1] Harvard Univ, Massachusetts Gen Hosp, Sch Med, Ctr Engn & Surg Serv, Boston, MA 02114 USA
[2] Shriners Hosp Children, Boston, MA 02114 USA
[3] Texas A&M Univ, Hlth Sci Ctr, Dept Med Biochem & Genet, College Stn, TX 77843 USA
[4] Univ Massachusetts, Dept Mech Engn, Dartmouth, MA 02747 USA
关键词
D O I
10.1006/cryo.2001.2360
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Recently, there has been much interest in using trehalose and other small carbohydrates to preserve mammalian cells in the dried state as an alternative to cryopreservation. Here, we report on the successful preservation of plasma membrane integrity after drying, as a first step toward full preservation of mammalian cells. Trehalose was introduced into cells using a genetically engineered version of alpha-hemolysin, a pore-forming protein; the cells were then dried and stored for weeks at different temperatures with similar to90% recovery of the intact plasma membrane, we show that protection of the plasma membrane by internal trehalose is dose dependent and estimate the amount of internal trehalose required for adequate protection to be similar to10(10) molecules/cell, In addition, a minimal amount of water (similar to15 wt%) appears to be necessary. These results show that a key component of mammalian cells can be preserved in a dried state for weeks under mild conditions (-20degreesC and 5% relative humidity) and thereby suggest new approaches to preserving mammalian cells. (C) 2001 Elsevier Science (USA).
引用
收藏
页码:168 / 181
页数:14
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