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Desiccation tolerance in human cells.

I Puhlev1, N Guo, D R Brown

  • 1UCSD Cancer Center, La Jolla, California 92093-0912, USA.

Cryobiology
|October 2, 2001
PubMed
Summary
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Mammalian cell desiccation for tissue engineering is improved by vacuum storage. Human cells can survive drying under vacuum without added protectants, enhancing viability for biological applications.

Area of Science:

  • Cell biology
  • Biotechnology
  • Tissue engineering

Background:

  • Mammalian cell desiccation is crucial for applications like tissue engineering.
  • Previous work showed trehalose biosynthesis genes enable reversible cell desiccation for 5 days.

Purpose of the Study:

  • Investigate factors enhancing human cell survival during desiccation.
  • Determine optimal conditions for preserving cell viability in a dried state.

Main Methods:

  • Human cells in culture were subjected to various desiccation conditions.
  • Key factors evaluated included vacuum, desiccation rate, temperature, cell confluence, and light exposure.
  • Cell viability was assessed after desiccation and storage.

Main Results:

Related Experiment Videos

  • Vacuum storage significantly enhanced mammalian cell desiccation tolerance.
  • Cells dried slowly under vacuum survived without added carbohydrates or polyols.
  • Desiccation rate, temperature, confluence, and light critically impact cell viability.

Conclusions:

  • Vacuum is a key factor for successful mammalian cell desiccation and viability.
  • Cellular structure maintenance during drying is essential for survival.
  • Further optimization is needed for long-term storage of desiccated cells, possibly addressing free radical damage.