Stem cells in reproductive strategy of asexually reproducing invertebrates

Stem cells in reproductive strategy of asexually reproducing invertebrates Original and literature data supporting the evolutionary conservation of the morphofunctional organization of totipotent cells of germ and stem lineages in metazoan animals are reviewed. We studied stem cells of the colonial rhizocephalans, Peltogasterella gracilis, Polyascus polygenea and Thylacoplethus isaevae, the turbellarian Dugesia tigrina, the colonial hydroid Obelia longissima, and cultured embryonic stem cells of mouse. The typical germinal granules of germ plasm, selective expression of the activity of alkaline phosphatase and of proliferating cell nuclear antigen (PCNA), which are known as markers of stem and primary germ cells of vertebrates, and the specific expression of the protein product of the vasa gene in cells of rhizocephalans, which is a marker of cells of germ and stem lineages of various metazoans, specified the stem cells of invertebrates of such different taxa. The self-renewing pool of totipotent stem cells is the cellular basis of the reproductive strategy, including sexual and asexual reproduction; such cells share morphofunctional features of embryonic stem and germline cells of Metazoa. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Marine Biology Springer Journals

Stem cells in reproductive strategy of asexually reproducing invertebrates

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Publisher
SP MAIK Nauka/Interperiodica
Copyright
Copyright © 2008 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Freshwater & Marine Ecology
ISSN
1063-0740
eISSN
1608-3377
D.O.I.
10.1134/S106307400801001X
Publisher site
See Article on Publisher Site

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