Document Detail


A monoclonal antibody stains myogenic cells in regenerating newt muscle.
MedLine Citation:
PMID:  3446476     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Monoclonal antibodies have been used to study minced muscle regeneration in the adult newt, Notophthalmus viridescens. The contralateral limb was amputated and the immunostaining patterns in the regenerating blastema were compared with the minced tissue in sectioned material. Staining with a myofibre-specific antibody, called 12/101 (Kintner & Brockes, 1984), showed that myofibre degeneration was complete by 8-10 days after mincing, with myogenesis commencing 2 days later. Another monoclonal antibody, called 22/18, previously shown to label a subset of cells in the regeneration blastema of the newt (Kintner & Brockes, 1984, 1985), was found also to recognize a population of cells in regenerating minced muscle. At 6 days after mincing, the number of 22/18-positive (22/18+) cells was low but by days 12-16, during the period of myogenesis, their number had increased to become a major population within the minced tissue. A small number of the 22/18+ cells could be double labelled with 12/101 at this time. Prior to this, there was a phase in which 12/101 staining had disappeared from the mince. Cells immunoreactive with both antibodies after this phase confirm that at least some of the 22/18+ cells are myogenic. The number of 22/18+ cells decreased as muscle repair and maturation progressed. These results show that 22/18 is not specifically associated with blastemal cells but is a more general marker for regenerating systems in the newt. They further suggest an alternative interpretation of the double-labelled cells used by Kintner & Brockes (1984) as evidence for myofibre dedifferentiation in limb regeneration. Instead, we propose that such cells represent new myogenesis occurring by tissue repair of locally damaged muscle fibres.
Authors:
K J Griffin; D M Fekete; B M Carlson
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Development (Cambridge, England)     Volume:  101     ISSN:  0950-1991     ISO Abbreviation:  Development     Publication Date:  1987 Oct 
Date Detail:
Created Date:  1988-05-24     Completed Date:  1988-05-24     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  8701744     Medline TA:  Development     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  267-77     Citation Subset:  IM    
Affiliation:
MRC Cell Biophysics Unit, King's College London, UK.
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MeSH Terms
Descriptor/Qualifier:
Animals
Antibodies, Monoclonal / diagnostic use*
Immunohistochemistry
Muscles / immunology,  physiology*
Notophthalmus viridescens
Regeneration*
Schwann Cells / immunology
Time Factors
Grant Support
ID/Acronym/Agency:
DE-07687/DE/NIDCR NIH HHS; HD-17228/HD/NICHD NIH HHS
Chemical
Reg. No./Substance:
0/Antibodies, Monoclonal

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