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Updated: Jul 15, 2026

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Detection of Alternative Splicing During Epithelial-Mesenchymal Transition
Published on: October 9, 2014
Perfilado de una sola molécula de empalme alternativo de pre-ARNm
Jun Zhu1, Jay Shendure, Robi D Mitra
1Department of Genetics, Harvard Medical School, 200 Longwood Avenue, Boston, MA 02115, USA.
Resumen
El perfil de exones de polonio digital es una nueva tecnología para estudiar el empalme de ARN pre-mensajero alternativo. Permite a los investigadores monitorear y cuantificar diversos patrones de empalme en transcripciones individuales.
Área de la Ciencia:
- Biología Molecular Biología Molecular
- Genética La genética.
- La bioinformática es la bioinformática.
Sus antecedentes:
- El empalme de ARN pre-mensajero alternativo (ARNm) genera diversidad de proteínas, lo que contribuye a la complejidad de los mamíferos.
- Comprender el empalme alternativo es crucial para explicar la función génica y la complejidad del organismo a partir de un conjunto de genes limitado.
Objetivo del estudio:
- Introducir y describir una nueva tecnología basada en una sola molécula llamada perfil de exones de polonio digital.
- Para permitir el estudio de patrones de empalme de ARN pre-mensajero alternativos complejos a nivel de transcripción individual.
Principales métodos:
- El perfil de exones de polonio digital utiliza una estrategia de minisecuenciación para la resolución de un solo nucleótido.
- La tecnología emplea un enfoque digital para cuantificar las variantes individuales de empalme.
- Permite el monitoreo de la diversidad combinatoria en la inclusión de exones dentro de una sola transcripción.
Principales resultados:
- La tecnología desarrollada proporciona un análisis de alta resolución de eventos alternativos de empalme.
- Permite la cuantificación precisa de las diferentes variantes de empalme presentes en una muestra.
- Demuestra la capacidad de estudiar la diversidad de inclusión de exones a nivel de una sola molécula.
Conclusiones:
- El perfil de exones de polonio digital es una herramienta poderosa para investigar el empalme alternativo complejo.
- Esta tecnología se puede aplicar para estudiar los roles fisiológicos y patológicos de los ARNm empalmados alternativamente.
- Ofrece nuevas vías para comprender los mecanismos que regulan el empalme alternativo.
Videos de Conceptos Relacionados
RNA Splicing
Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
Pre-mRNA Processing
In eukaryotic cells, transcripts made by RNA polymerase are modified and processed before exiting the nucleus. Unprocessed RNA is called precursor mRNA or pre-mRNA to distinguish it from mature mRNA.
Once about 20-40 ribonucleotides have been joined together by RNA polymerase, a group of enzymes adds a “cap” to the 5’ end of the growing transcript. In this process, a 5’ phosphate is replaced by modified guanosine that has a methyl group attached to it (7-Methyl guanosine). This 5’ cap helps the...
Once about 20-40 ribonucleotides have been joined together by RNA polymerase, a group of enzymes adds a “cap” to the 5’ end of the growing transcript. In this process, a 5’ phosphate is replaced by modified guanosine that has a methyl group attached to it (7-Methyl guanosine). This 5’ cap helps the...
RNA Splicing
Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
Alternative RNA Splicing
Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
Pre-mRNA Processing: RNA Splicing
Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
Alternative RNA Splicing
Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...

