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  • 1
    Electronic Resource
    Electronic Resource
    Role of the cellular environment in interstitial stem cell proliferation in Hydra (1991)
    Springer
    Development genes and evolution 200 (1991), S. 269-276 
    Details
    ISSN: 1432-041X
    Keywords: Stem cells ; Nerve cells ; Differentiation ; Microenvironment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The role of the cellular environment on hydra stem cell proliferation and differentiation was investigated by introduction of interstitial cells into host tissue of defined cellular composition. In epithelial tissue lacking all non-epithelial cells the interstitial cell population did not grow but differentiated into nerve cells and nematocytes. In host tissue with progressively increased numbers of nerve cells growth of the interstitial cell population was positively correlated to the nerve cell density. In agreement with previous observations (Bode et al. 1976), growth of the interstitial cell population was also found to be negatively correlated to the level of interstitial cells present. The strong correlation between the growth of the interstitial cell population and the presence of interstitial cells and nerve cells implies that interstitial cell proliferation is controlled by a feedback signal from interstitial cells and their derivatives. Our results suggest that the cellular environment of interstitial cells provides cues which are instrumental in stem cell decision making.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00241296
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The heat shock response in hydra: immunological relationship of hsp60, the major heat shock protein of Hydra vulgaris, to the ubiquitous hsp70 family (1991)
    Springer
    Hydrobiologia 216-217 (1991), S. 513-517 
    Details
    ISSN: 1573-5117
    Keywords: Hydra vulgaris ; heat shock ; hsp60 ; hsp70 ; immunology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The major heat shock protein (hsp) of Hydra vulgaris has recently been found to be a 60 kDa protein. Since in all organisms studied so far, the major heat shock protein is a 70 kDa protein, we have analyzed the relationship of hydra hsp60 to the highly conserved 70 kDa heat shock protein family. Genes and proteins related to the 70 kDa class of stress proteins are present in hydra. However, antibodies known to cross-react with hsp70 proteins in several different organisms do not cross-react with hydra hsp60 suggesting that hsp60 is not related to the conserved hsp70 proteins.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00026507
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    Paper (German National Licenses)
    Fulltext
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