Video Experimental Relacionado
Updated: May 13, 2026

08:25
Identification of Circular RNAs using RNA Sequencing
Published on: November 14, 2019
Los ARN circulares son una gran clase de ARN animales con potencia reguladora
Sebastian Memczak1, Marvin Jens, Antigoni Elefsinioti
1Systems Biology of Gene Regulatory Elements, Max-Delbrück-Center for Molecular Medicine, Robert-Rössle-Strasse 10, 13125 Berlin, Germany.
Nature
|March 1, 2013
Resumen
Los ARN circulares (circRNA) son una clase de moléculas de ARN recién descubiertas. Estas moléculas estables actúan como reguladores post-transcripcionales cruciales al unirse a los microARN (miARN), influyendo en la expresión génica.
Área de la Ciencia:
- Biología Molecular Biología Molecular
- Genética La genética.
- Biología del desarrollo Biología del desarrollo.
Sus antecedentes:
- Los ARN circulares (circRNA) representan una clase enigmática de moléculas de ARN con funciones en gran parte desconocidas.
- Su estabilidad y sus posibles funciones regulatorias requieren una investigación sistemática.
Objetivo del estudio:
- Identificar y analizar de manera sistemática los ARN circulares (ARN circulares) en diferentes especies.
- Investigar las funciones funcionales y el potencial regulador de los circRNAs, particularmente en la regulación post-transcripcional.
Principales métodos:
- Secuenciación de ARN de alto rendimiento de muestras de humanos, ratones y nematodos.
- Análisis computacional para detectar y caracterizar los circRNAs.
- Ensayos funcionales en peces cebra para evaluar el impacto de los circRNAs en el desarrollo.
Principales resultados:
- Se identificaron miles de circARN estables y bien expresados, muchos de los cuales exhiben patrones de expresión específicos del tejido y la etapa de desarrollo.
- Se descubrió que un circARN humano específico, CDR1as, se une a numerosos complejos efectores de microARN (miRNA), actuando especialmente como una esponja potente para miR-7.
- CDR1as funciona como un antagonista de miRNA, con pruebas experimentales en peces cebra que demuestran su papel en la regulación del desarrollo del cerebro medio.
Conclusiones:
- Los ARN circulares constituyen una clase importante de reguladores post-transcripcionales.
- El empalme de la cabeza a la cola de los exones en la formación de circRNA sugiere un nuevo potencial regulador derivado de las secuencias de codificación.
Videos de Conceptos Relacionados
Ribosomal RNA Synthesis
Ribosome synthesis is a highly complex and coordinated process involving more than 200 assembly factors. The synthesis and processing of ribosomal components occurs not only in the nucleolus but also in the nucleoplasm and the cytoplasm of eukaryotic cells.
Ribosome biogenesis begins with the synthesis of 5S and 45S pre-rRNAs by distinct RNA polymerases. The primary transcripts are extensively processed and modified before they are bound and folded by ribosomal proteins and assembly factors,...
Ribosome biogenesis begins with the synthesis of 5S and 45S pre-rRNAs by distinct RNA polymerases. The primary transcripts are extensively processed and modified before they are bound and folded by ribosomal proteins and assembly factors,...
Types of RNA
Overview
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...
Types of RNA
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in regulating gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA Performs Diverse...
RNA Performs Diverse...
Types of RNA
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in regulating gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA Performs Diverse...
RNA Performs Diverse...
Types of RNA
Overview
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...
RNA Interference
RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...

