Balbiani cytoplasm in oocytes of a primitive fish, the sturgeon Acipenser gueldenstaedtii, and its potential homology to the Balbiani body (mitochondrial cloud) of Xenopus laevis oocytes.
Identifieur interne : 000218 ( Ncbi/Checkpoint ); précédent : 000217; suivant : 000219Balbiani cytoplasm in oocytes of a primitive fish, the sturgeon Acipenser gueldenstaedtii, and its potential homology to the Balbiani body (mitochondrial cloud) of Xenopus laevis oocytes.
Auteurs : Monika Zelazowska [Pologne] ; Wincenty Kilarski ; Szczepan M. Bilinski ; Daniel D. Podder ; Malgorzata KlocSource :
- Cell and tissue research [ 0302-766X ] ; 2007.
English descriptors
- KwdEn :
- MESH :
- metabolism : Cytoplasmic Granules, Oocytes, Organelles.
- ultrastructure : Cytoplasmic Granules, Oocytes, Organelles.
- Animals, Female, Fishes, Species Specificity, Xenopus laevis.
Abstract
The oocytes of many organisms, including frogs and fish, contain a distinct cytoplasmic organelle called the Balbiani body. Because of the scarcity of published information and the tremendous variability in the appearance, ultrastructure, and composition of Balbiani bodies between species, the function of the Balbiani body and its inter-species homology remain a mystery. In Xenopus laevis, the Balbiani body is known to play a role in transporting germ cell determinants and localized RNAs to the oocyte vegetal cortex. In fish, however, the molecular composition of the Balbiani body has not been studied to date, and its function remains completely unknown. We have studied the ultrastructure and molecular composition of previtellogenic oocytes of the sturgeon, Acipenser gueldenstaedtii, by using electron microscopy, in situ hybridization, and immunostaining. We have found that sturgeon oocytes contain two distinct zones of cytoplasm: homogeneous (organelle-free) and granular (organelle-rich). We have also found that the granular ooplasm, which we term the Balbiani cytoplasm, shares important homologies, in both ultrastructure and molecular composition, with Xenopus Balbiani bodies.
DOI: 10.1007/s00441-007-0403-9
PubMed: 17364198
Affiliations:
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Bilinski</name></author><author><name sortKey="Podder, Daniel D" sort="Podder, Daniel D" uniqKey="Podder D" first="Daniel D" last="Podder">Daniel D. Podder</name></author><author><name sortKey="Kloc, Malgorzata" sort="Kloc, Malgorzata" uniqKey="Kloc M" first="Malgorzata" last="Kloc">Malgorzata Kloc</name></author></analytic><series><title level="j">Cell and tissue research</title><idno type="ISSN">0302-766X</idno><imprint><date when="2007" type="published">2007</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Animals</term><term>Cytoplasmic Granules (metabolism)</term><term>Cytoplasmic Granules (ultrastructure)</term><term>Female</term><term>Fishes</term><term>Oocytes (metabolism)</term><term>Oocytes (ultrastructure)</term><term>Organelles (metabolism)</term><term>Organelles (ultrastructure)</term><term>Species Specificity</term><term>Xenopus laevis</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Cytoplasmic Granules</term><term>Oocytes</term><term>Organelles</term></keywords><keywords scheme="MESH" qualifier="ultrastructure" xml:lang="en"><term>Cytoplasmic Granules</term><term>Oocytes</term><term>Organelles</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Animals</term><term>Female</term><term>Fishes</term><term>Species Specificity</term><term>Xenopus laevis</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The oocytes of many organisms, including frogs and fish, contain a distinct cytoplasmic organelle called the Balbiani body. Because of the scarcity of published information and the tremendous variability in the appearance, ultrastructure, and composition of Balbiani bodies between species, the function of the Balbiani body and its inter-species homology remain a mystery. In Xenopus laevis, the Balbiani body is known to play a role in transporting germ cell determinants and localized RNAs to the oocyte vegetal cortex. In fish, however, the molecular composition of the Balbiani body has not been studied to date, and its function remains completely unknown. We have studied the ultrastructure and molecular composition of previtellogenic oocytes of the sturgeon, Acipenser gueldenstaedtii, by using electron microscopy, in situ hybridization, and immunostaining. We have found that sturgeon oocytes contain two distinct zones of cytoplasm: homogeneous (organelle-free) and granular (organelle-rich). We have also found that the granular ooplasm, which we term the Balbiani cytoplasm, shares important homologies, in both ultrastructure and molecular composition, with Xenopus Balbiani bodies.</div></front></TEI><affiliations><list><country><li>Pologne</li></country></list><tree><noCountry><name sortKey="Bilinski, Szczepan M" sort="Bilinski, Szczepan M" uniqKey="Bilinski S" first="Szczepan M" last="Bilinski">Szczepan M. Bilinski</name><name sortKey="Kilarski, Wincenty" sort="Kilarski, Wincenty" uniqKey="Kilarski W" first="Wincenty" last="Kilarski">Wincenty Kilarski</name><name sortKey="Kloc, Malgorzata" sort="Kloc, Malgorzata" uniqKey="Kloc M" first="Malgorzata" last="Kloc">Malgorzata Kloc</name><name sortKey="Podder, Daniel D" sort="Podder, Daniel D" uniqKey="Podder D" first="Daniel D" last="Podder">Daniel D. Podder</name></noCountry><country name="Pologne"><noRegion><name sortKey="Zelazowska, Monika" sort="Zelazowska, Monika" uniqKey="Zelazowska M" first="Monika" last="Zelazowska">Monika Zelazowska</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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