Publication Date:
1992-04-10
Description:
A cell-free system has been developed that executes centriole duplication. Surf clam (Spisula solidissima) oocytes, arrested at late prophase of meiosis I, do not contain centrioles, centrosomes, or asters. Serial section high-voltage electron microscopy (HVEM) of asters and spindles isolated from potassium chloride-activated oocytes indicates that within 4 minutes oocytes assemble a single centriole that is duplicated by 15 minutes when assembly of the first meiotic spindle is complete. A mixture of lysates from unactivated oocytes and potassium chloride-activated oocytes induces centriole formation and duplication. Astral microtubule content in these lysate mixtures increases with time.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Palazzo, R E -- Vaisberg, E -- Cole, R W -- Rieder, C L -- R01-40198/PHS HHS/ -- R01-43264/PHS HHS/ -- RR 01219/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1992 Apr 10;256(5054):219-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Marine Biological Laboratory, Woods Hole, MA 02543.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1566068" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
Bivalvia
;
Cell-Free System
;
Centrioles/*ultrastructure
;
Female
;
Meiosis
;
Microscopy, Electron
;
Oocytes/cytology/*ultrastructure
;
Prophase
;
Tubulin/analysis
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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