Video Experimental Relacionado
Updated: Aug 7, 2026
09:52
Generation of High Quality Chromatin Immunoprecipitation DNA Template for High-throughput Sequencing (ChIP-seq)
Published on: April 19, 2013
Un marcador polimórfico de ADN vinculado a la fibrosis quística se encuentra en el cromosoma 7
Nature
|November 4, 1985
Resumen
La fibrosis quística (FQ) es una enfermedad hereditaria común. Los investigadores vincularon el locus genético CF (DOCRI-917) con el cromosoma 7 utilizando análisis de sonda de ADN y estudios de enlace.
Área de la Ciencia:
- Genética La genética.
- La bioquímica es la bioquímica.
- Biología Molecular Biología Molecular
Sus antecedentes:
- La fibrosis quística (FQ) es un trastorno hereditario prevalente en las poblaciones caucásicas.
- El defecto bioquímico fundamental subyacente a la CF sigue sin ser identificado.
- La herencia de la FQ sigue un patrón autosómico recesivo, lo que sugiere una sola mutación genética.
Objetivo del estudio:
- Para identificar el locus genético responsable de la fibrosis quística.
- Para investigar los marcadores genéticos relacionados con la CF.
Principales métodos:
- Utilizando estudios de vinculación para mapear el gen CF.
- Empleando una sonda de ADN aislada al azar para identificar polimorfismos de longitud de fragmento de restricción (RFLPs).
- Analizando las variaciones genéticas en la actividad de la paraoxonasa sérica.
Principales resultados:
- Se descubrió que dos marcadores genéticos estaban vinculados a la CF.
- El locus genético designado DOCRI-917, identificado por una sonda de ADN clonado, se localizó en el cromosoma 7.
Conclusiones:
- El locus genético para la fibrosis quística se ha mapeado en el cromosoma 7.
- Este hallazgo representa un paso significativo hacia la identificación del gen específico responsable de la FQ.
Más Videos Relacionados
Videos de Conceptos Relacionados
01:35Pedigree Analysis
Overview
01:17Karyotyping
Describing the number and physical features of chromosomes can reveal abnormalities that underlie genetic diseases. This description is facilitated by special staining techniques that produce a particular banding pattern on each chromosome. State-of-the-art techniques make this approach even more powerful, enabling the detection of individual genes that cause disease.A Simple Chromosome Staining Technique Provides Valuable Scientific InsightSome genetic diseases can be detected by looking at...
01:39Mutations
Overview
01:43Sex-linked Disorders
Like autosomes, sex chromosomes contain a variety of genes necessary for normal body function. When a mutation in one of these genes results in biological deficits, the disorder is considered sex-linked.
02:46Genome Copying Errors
DNA replication is a well-evolved process that copies millions of base pairs with high fidelity during each cell division. Occasionally a wrong base or a long stretch of wrong bases may get added to the daughter strands. If the errors are left unchecked, cells might accumulate several mutations that might endanger their survival. Therefore, the copying errors are checked and repaired at three levels.
01:23Cystic Fibrosis: Pathogenesis
Cystic fibrosis (CF), an autosomal recessive disorder, significantly affects the function of exocrine glands. This genetically inherited disease is characterized by the production of thick and sticky mucus, which can severely affect various organs and systems in the body.
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation, but...
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation, but...