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Tick Microbiome Characterization by Next-Generation 16S rRNA Amplicon Sequencing
Published on: August 25, 2018
Un catálogo de genomas de referencia del microbioma humano
Resumen
Los investigadores secuenciaron 178 genomas microbianos, identificando más de 30.000 nuevos polipéptidos. Estos datos del microbioma humano avanzan en la comprensión de la diversidad microbiana y su vínculo con la salud y la enfermedad.
Área de la Ciencia:
- Microbiología Microbiología.
- La genómica es la genómica.
- La bioinformática es la bioinformática.
Sus antecedentes:
- El microbioma humano comprende diversos microorganismos que influyen en la salud y las enfermedades.
- La iniciativa de los Institutos Nacionales de la Salud (NIH) tiene como objetivo caracterizar la diversidad de especies microbianas.
- La secuenciación metagenómica y la secuenciación del genoma de referencia son componentes clave de esta iniciativa.
Objetivo del estudio:
- Para presentar los resultados de secuenciación del genoma de referencia inicial de 178 genomas microbianos.
- Para identificar nuevos polipéptidos dentro de estos genomas microbianos.
- Para evaluar la utilidad del conjunto de referencia para el análisis de la secuencia del microbioma.
Principales métodos:
- Secuenciación de 178 genomas microbianos de referencia.
- Identificación de polipéptidos con criterios específicos de longitud y secuencia de homología.
- Análisis BLASTP contra una base de datos no redundante.
- Análisis pan-genómico para evaluar la saturación del conjunto de datos.
Principales resultados:
- Se identificó un conjunto de 30.867 nuevos polipéptidos, de los cuales el 97% son únicos.
- El conjunto de genomas de referencia permite la asociación de aproximadamente el 40% de las secuencias del microbioma del tracto gastrointestinal con organismos específicos.
- El análisis pan-genómico indica que los conjuntos de datos genéticos microbianos aún no están saturados.
Conclusiones:
- Los primeros 178 genomas microbianos de referencia proporcionan un valioso recurso para la investigación del microbioma.
- Se descubrió un número significativo de nuevos polipéptidos microbianos.
- Se requiere más secuenciación para capturar completamente la diversidad genética del microbioma humano.
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