Analysis of adhesion proteins from neural eye tissues of eight-day-old chick embryos

Analysis of adhesion proteins from neural eye tissues of eight-day-old chick embryos Two groups of proteins were isolated from the retina and pigment epithelium of eight-day-old chick embryos. Experiments with suspension cultures of retinal cells demonstrated that only the retinal extracts and the fraction of its acidic proteins can stimulate cell aggregation in vitro. Analysis by the method of high-performance liquid chromatography showed that fractions of acidic and basic retinal proteins, which markedly differ in their electric charge and biological activity, have similar composition. To study the effect of these proteins on the morphological and functional state of pigment epitheliumin vitro, a new experimental model is proposed, with the posterior segment of the newt (Pleurodeles waltl) eye used as a test tissue. The fraction of basic proteins isolated from the chick embryonic pigment epithelium stabilized cell differentiation in the newt pigment epithelium. The analyzed proteins proved to be biologically active at extremely low doses, corresponding to 10−12 M solutions. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Developmental Biology Springer Journals

Analysis of adhesion proteins from neural eye tissues of eight-day-old chick embryos

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Publisher
Springer Journals
Copyright
Copyright © 2000 by MAIK “Nauka/Interperiodica”
Subject
Life Sciences; Developmental Biology; Animal Anatomy / Morphology / Histology
ISSN
1062-3604
eISSN
1608-3326
D.O.I.
10.1007/BF02758911
Publisher site
See Article on Publisher Site

Abstract

Two groups of proteins were isolated from the retina and pigment epithelium of eight-day-old chick embryos. Experiments with suspension cultures of retinal cells demonstrated that only the retinal extracts and the fraction of its acidic proteins can stimulate cell aggregation in vitro. Analysis by the method of high-performance liquid chromatography showed that fractions of acidic and basic retinal proteins, which markedly differ in their electric charge and biological activity, have similar composition. To study the effect of these proteins on the morphological and functional state of pigment epitheliumin vitro, a new experimental model is proposed, with the posterior segment of the newt (Pleurodeles waltl) eye used as a test tissue. The fraction of basic proteins isolated from the chick embryonic pigment epithelium stabilized cell differentiation in the newt pigment epithelium. The analyzed proteins proved to be biologically active at extremely low doses, corresponding to 10−12 M solutions.

Journal

Russian Journal of Developmental BiologySpringer Journals

Published: Nov 18, 2007

References

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