Dysregulation of cyclin D1 by translocation into an IgH gamma switch region in two multiple myeloma cell lines.
Blood
; 88(2): 674-81, 1996 Jul 15.
Article
en En
| MEDLINE
| ID: mdl-8695815
Translocations involving the IgH locus at chromosomal locus 14q32.3 are a common event in many B-cell malignancies. The translocations, which generally occur into JH and switch regions, are mediated by errors in the two developmentally regulated, lymphocyte-specific pathways: VDJ-and switch-mediated recombination. Dysregulation of cyclin D1 by a t(11;14)(q13;q32) translocation occurs in most cases of mantle-cell lymphoma and in approximately 30% of multiple myeloma (MM) tumors in which a 14q32 translocation can be detected. We show here that in two of three myeloma lines that overexpress cyclin D1, there is an 11;14 translocation into a gamma switch region, suggesting an error in switch recombination. By contrast, 11;14 translocations in mantlecell lymphoma are invariably into or near a JH segment, suggesting an error in VDJ recombination. This is consistent with the fact that myeloma cells have undergone lgH switch recombination, whereas mantle-cell lymphoma cells generally have not.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Translocación Genética
/
Cromosomas Humanos Par 11
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Cromosomas Humanos Par 14
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Inmunoglobulina G
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Proteínas de Mieloma
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Regulación Neoplásica de la Expresión Génica
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Genes de Cambio
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Cadenas Pesadas de Inmunoglobulina
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Proteínas Oncogénicas
/
Ciclinas
Límite:
Humans
Idioma:
En
Revista:
Blood
Año:
1996
Tipo del documento:
Article
País de afiliación:
Estados Unidos
Pais de publicación:
Estados Unidos