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Updated: Jul 30, 2026
09:40
Analysis of the c-KIT Ligand Promoter Using Chromatin Immunoprecipitation
Published on: June 27, 2017
El proto-oncogeno c-kit que codifica un receptor de tirosina quinasa transmembrana se asigna al locus W del ratón
B Chabot1, D A Stephenson, V M Chapman
1Division of Molecular and Developmental Biology, Mount Sinai Hospital Research Institute, Toronto, Ontario, Canada.
Nature
|September 1, 1988
Resumen
La mutación del locus W en ratones, que causa anemia, esterilidad y pérdida de pigmento, se identifica como una deleción en el proto-oncogén del c-kit. Este hallazgo vincula c-kit a procesos cruciales del desarrollo como la hematopoyesis y la melanogénesis.
Área de la Ciencia:
- Biología del desarrollo Biología del desarrollo.
- Genética La genética.
- Biología Molecular Biología Molecular
Sus antecedentes:
- Las mutaciones en el locus W en ratones resultan en efectos pleiotrópicos, incluida la anemia macrocítica, la falta de pigmentación del cabello y la esterilidad.
- Estas mutaciones del locus W sugieren defectos en la proliferación/migración celular durante la embriogénesis y en la jerarquía de las células madre hematopoyéticas.
Objetivo del estudio:
- Para dilucidar la base molecular del fenotipo complejo asociado con los ratones mutantes W.
- Identificar el gen responsable del locus W y su papel en el desarrollo de los mamíferos.
Principales métodos:
- Se realizó un análisis backcross interespecífico para determinar el vínculo genético entre el locus W y los genes conocidos.
- El análisis de eliminación se utilizó para investigar la presencia de genes específicos dentro de la región del locus W.
Principales resultados:
- El estudio identificó una deleción del proto-oncogén c-kit en ratones mutantes W.
- El análisis de cruce inverso interespecífico mostró una estrecha vinculación entre el locus W y el gen c-kit, sin segregación observable.
Conclusiones:
- El proto-oncogén del c-kit está implicado como el gen responsable del locus W.
- Este descubrimiento proporciona el primer ejemplo de una mutación de la línea germinal en un proto-oncogén de mamífero y vincula c-kit a la gametogénesis, la melanogénesis y la hematopoyesis.
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