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Nuclei of chicken neurons in tissues and three-dimensional cell cultures are organized into distinct radial zones.

Berchtold, Doris ; Fesser, Stephanie ; Bachmann, Gesine ; Kaiser, Alexander ; Eilert, John-Christian ; Frohns, Florian ; Sadoni, Nicolas ; Muck, Joscha ; Kremmer, Elisabeth ; Eick, Dirk ; Layer, Paul G. ; Zink, Daniele (2011)
Nuclei of chicken neurons in tissues and three-dimensional cell cultures are organized into distinct radial zones.
In: Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology, 19 (2)
Artikel, Bibliographie

Kurzbeschreibung (Abstract)

We used chicken retinospheroids (RS) to study the nuclear architecture of vertebrate cells in a three-dimensional (3D) cell culture system. The results showed that the different neuronal cell types of RS displayed an extreme form of radial nuclear organization. Chromatin was arranged into distinct radial zones which became already visible after DAPI staining. The distinct zones were enriched in different chromatin modifications and in different types of chromosomes. Active isoforms of RNA polymerase II were depleted in the outermost zone. Also chromocenters and nucleoli were radially aligned in the nuclear interior. The splicing factor SC35 was enriched at the central zone and did not show the typical speckled pattern of distribution. Evaluation of neuronal and non-neuronal chicken tissues showed that the highly ordered form of radial nuclear organization was also present in neuronal chicken tissues. Furthermore, the data revealed that the neuron-specific nuclear organization was remodeled when cells spread on a flat substrate. Monolayer cultures of a chicken cell line did not show this extreme form of radial organization. Rather, such monolayer cultures displayed features of nuclear organization which have been described before for many different types of monolayer cells. The finding that an extreme form radial nuclear organization, which has not been described before, is present in RS and tissues, but not in cells spread on a flat substrate, suggests that it would be important to complement studies on nuclear architecture performed with monolayer cells by studies on 3D cell culture systems and tissues.

Typ des Eintrags: Artikel
Erschienen: 2011
Autor(en): Berchtold, Doris ; Fesser, Stephanie ; Bachmann, Gesine ; Kaiser, Alexander ; Eilert, John-Christian ; Frohns, Florian ; Sadoni, Nicolas ; Muck, Joscha ; Kremmer, Elisabeth ; Eick, Dirk ; Layer, Paul G. ; Zink, Daniele
Art des Eintrags: Bibliographie
Titel: Nuclei of chicken neurons in tissues and three-dimensional cell cultures are organized into distinct radial zones.
Sprache: Englisch
Publikationsjahr: 2011
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology
Jahrgang/Volume einer Zeitschrift: 19
(Heft-)Nummer: 2
Kurzbeschreibung (Abstract):

We used chicken retinospheroids (RS) to study the nuclear architecture of vertebrate cells in a three-dimensional (3D) cell culture system. The results showed that the different neuronal cell types of RS displayed an extreme form of radial nuclear organization. Chromatin was arranged into distinct radial zones which became already visible after DAPI staining. The distinct zones were enriched in different chromatin modifications and in different types of chromosomes. Active isoforms of RNA polymerase II were depleted in the outermost zone. Also chromocenters and nucleoli were radially aligned in the nuclear interior. The splicing factor SC35 was enriched at the central zone and did not show the typical speckled pattern of distribution. Evaluation of neuronal and non-neuronal chicken tissues showed that the highly ordered form of radial nuclear organization was also present in neuronal chicken tissues. Furthermore, the data revealed that the neuron-specific nuclear organization was remodeled when cells spread on a flat substrate. Monolayer cultures of a chicken cell line did not show this extreme form of radial organization. Rather, such monolayer cultures displayed features of nuclear organization which have been described before for many different types of monolayer cells. The finding that an extreme form radial nuclear organization, which has not been described before, is present in RS and tissues, but not in cells spread on a flat substrate, suggests that it would be important to complement studies on nuclear architecture performed with monolayer cells by studies on 3D cell culture systems and tissues.

Fachbereich(e)/-gebiet(e): 10 Fachbereich Biologie
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10 Fachbereich Biologie > Developmental Biology and Neurogenetics
Hinterlegungsdatum: 21 Nov 2011 10:55
Letzte Änderung: 05 Mär 2013 09:56
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