Video Experimental Relacionado
Updated: Jun 18, 2026
10:34
Ultra-long Read Sequencing for Whole Genomic DNA Analysis
Published on: March 15, 2019
La secuenciación del genoma humano utilizando bases sin cadenas se lee en nanoarrays de ADN de autoensamblaje
Radoje Drmanac1, Andrew B Sparks, Matthew J Callow
1Complete Genomics, Inc., 2071 Stierlin Court, Mountain View, CA 94043, USA. rdrmanac@completegenomics.com
Science (New York, N.Y.)
|November 7, 2009
Resumen
Este estudio presenta una nueva plataforma de secuenciación del genoma que es precisa, asequible y escalable. Permite la secuenciación eficiente del genoma humano para grandes estudios genéticos y la investigación de enfermedades.
Área de la Ciencia:
- La genómica es la genómica.
- Biología Molecular Biología Molecular
- La bioinformática es la bioinformática.
Sus antecedentes:
- La secuenciación del genoma es crucial para comprender las enfermedades humanas.
- Las plataformas existentes se enfrentan a desafíos de eficiencia y costo.
- Se necesitan avances para los estudios genéticos a gran escala.
Objetivo del estudio:
- Para describir una nueva plataforma de secuenciación del genoma.
- Para evaluar su eficiencia, precisión y costo.
- Para demostrar su utilidad para la secuenciación del genoma humano.
Principales métodos:
- Utilizó la química de la ligadura de anclaje de la sonda combinatoria.
- Empleó nanoarrays con patrones de nanoesferas de ADN que se autoensamblan.
- Secuenciado tres genomas humanos con alta cobertura.
Principales resultados:
- Se logró una cobertura de 45 a 87 veces por genoma.
- Se identificaron de 3,2 a 4,5 millones de variantes de secuencia por genoma.
- Se ha demostrado una alta precisión (1 variante falsa por cada 100 kilobases).
Conclusiones:
- La plataforma ofrece una imagen eficiente y un bajo consumo de reactivo.
- El costo asequible ($ 4400 consumibles) y la escalabilidad son ventajas clave.
- Permite la secuenciación completa del genoma humano para la detección de variantes raras en grandes estudios.
Más Videos Relacionados
Videos de Conceptos Relacionados
03:21RNA-seq
RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases.
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while microarray-based...
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while microarray-based...
01:57Sanger Sequencing
DNA sequencing is a fundamental technique that is routinely used in the biological sciences. This method can be applied to a range of questions at different scales - from the sequencing of a cloned DNA fragment or the study of a mutation in a gene up to whole-genome sequencing. However, despite the widespread use of sequencing today, it was not until 1977 that Fredrick Sanger and his collaborators developed the chain-termination method to decode DNA sequences. It relies on the separation of a...
03:00Next-generation Sequencing
The first human genome sequencing project cost $2.7 billion and was declared complete in 2003, after 15 years of international cooperation and collaboration between several research teams and funding agencies. Today, with the advent of next-generation sequencing technologies, the cost and time of sequencing a human genome have dropped over 100 fold.
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features.
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features.
03:36Genome Annotation and Assembly
The genome refers to all of the genetic material in an organism. It can range from a few million base pairs in microbial cells to several billion base pairs in many eukaryotic organisms. Genome assembly refers to the process of taking the DNA sequencing data and putting it all back together in a correct order to create a close representation of the original genome. This is followed by the identification of functional elements on the newly assembled genome, a process called genome annotation.
02:34DNA Microarrays
Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...
01:05Maxam-Gilbert Sequencing
In the same year as the discovery of the Sanger sequencing method, another group of scientists, Allan Maxam and Walter Gilbert, demonstrated their chemical-cleavage method for DNA sequencing. The Maxam-Gilbert method relies on using different chemicals that can cleave the DNA sequence at specific sites, the separation of resulting DNA fragments of variable size using electrophoresis, and deciphering the DNA sequence from the resulting gel bands.
Challenges of the Maxam-Gilbert Method
The...
Challenges of the Maxam-Gilbert Method
The...