innovation in cosmetics: plant stem cell technology
Post on 19-Jun-2015
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by Liliana Todorinova
Plant Stem Cell Technology
innovation in cosmetics – reader’s digest
What are Plant Stem Cells?
they are undifferentiated cells
located in root meristem, shoot meristem, and vascular meristem
create all differentiated cell types
and self-renew, keeping constant the
number of stem cells they are not embryonic
cells
Source: http://en.wikipedia.org/wiki/Plant_stem_cell
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In this microscopy of root meristem, the stem cells are
located within zone 1
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How does it work?
Isolate stem cells
•In theory one individual plant or even organ (leaf, root, stem, flower, ...) can suffice for the isolation of stem cells. In practice, meristems are very fragile structures easily damaged by the very process of mechanical separation
Put in culture
conditions
•The isolated stem cells will be placed in a tank with liquid culture medium under optimal growth conditions.
Harvest
•The stem cells will divide and form bumps (callus) structures, which are harvested and cleaned
Extract substances
• from the callus plant material
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What are the key issues?
isolation• stem cells from plant meristems are
easily destroyed during extraction
culture conditions
• plant cell stem technology was known for decades but not used industrially because it used to produce giant callus structures which would block the tank
differentiation
• the plant produces some substances of interest only as a reaction to its environment, therefore in some cases a “differentiation” step might be required
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What advantages?
Biodiversity
• No need to collect plants in the wild
Eco-friendly• very little water
used for culture
Consumer Safety
• no pesticides, herbicides
• no heavy metals• no genetic
modification
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