Video Experimental Relacionado
Updated: Sep 10, 2025
06:57
Author Spotlight: Decoding RNA Methylation's Role in Pancreatic Cancer - A Single-Base Resolution Study
Published on: July 7, 2023
1.2K
Modificación del ARN m5C en el cáncer colorrectal: mecanismos y objetivos terapéuticos
Jiawei Wang1,2, Cenyi Qi1,2, Ran Wang1,2
1Department of Gastroenterology, The First Affiliated Hospital of Ningbo University, 247 Renmin Road, Jiangbei District, Ningbo City, 315020, Zhejiang Province, China.
Journal of translational medicine
|August 22, 2025
Resumen
La modificación del ARN de 5-metilcitosina (m5C) es crucial en la progresión del cáncer colorrectal (CRC), afectando la proliferación, la invasión y la resistencia a los medicamentos. Dirigirse al m5C ofrece potencial para nuevos diagnósticos y terapias de CCR.
Área de la Ciencia:
- La epigenética
- Biología del cáncer
- Oncología molecular
Sus antecedentes:
- La 5-metilcitosina (m5C) es una modificación clave del ARN.
- Se comprende cada vez más su papel en la tumorigénesis del cáncer colorrectal (CRC).
- El m5C está regulado por "escritores", "borradores" y "lectores".
Objetivo del estudio:
- Para aclarar el papel de la modificación de m5C en el cáncer colorrectal.
- Explorar el m5C como biomarcadores potenciales y objetivos terapéuticos en la CCR.
- Revisar el impacto de m5C en la progresión del cáncer y la resistencia al tratamiento.
Principales métodos:
- Tecnología de secuenciación de alto rendimiento.
- Las herramientas de detección de la modificación del ARN.
- Revisión de la literatura existente sobre el m5C en el CRC.
Principales resultados:
- La modificación de m5C influye en la proliferación, migración, invasión y apoptosis de las células CRC.
- Afecta la estabilidad del ARN, la reprogramación metabólica, las vías de señalización y el escape inmune en el CRC.
- La desregulación del m5C está relacionada con la resistencia a los medicamentos y a la inmunoterapia en el cáncer colorrectal.
Conclusiones:
- La modificación de m5C es un regulador epigenético significativo en el CRC.
- La orientación de las vías m5C presenta nuevas vías para la inmunoterapia CRC y la terapia molecular.
- Se requiere una mayor investigación sobre el papel de m5C en el microambiente tumoral y la resistencia para la traducción clínica.
Videos de Conceptos Relacionados
01:22MicroRNAs
3.1K
MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...
3.1K
02:23RNA Editing
9.2K
RNA editing is a post-transcriptional modification where a precursor mRNA (pre-mRNA) nucleotide sequence is changed by base insertion, deletion, or modification. The extent of RNA editing varies from a few hundred bases, in mitochondrial DNA of trypanosomes, to a just single base, in nuclear genes of mammals. Even a single base change in the pre-mRNA can convert a codon for one amino acid into the codon for another amino acid or a stop codon. This type of re-coding can significantly affect the...
9.2K
02:31Nuclear Export of mRNA
7.9K
Before mRNAs are exported to the cytoplasm, it is crucial to check each mRNA for structural and functional integrity. Eukaryotic cells use several different mechanisms, collectively known as mRNA surveillance, to look for irregularities in mRNAs. Irregular or aberrant mRNA are rapidly degraded by various enzymes. If a defective mRNA escapes the surveillance, it would be translated into a protein which would either be non-functional or not function properly. One of the primary irregularities in...
7.9K
01:53RNA Stability
33.9K
Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
33.9K
02:23Abnormal Proliferation
4.6K
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
4.6K
02:51mRNA Stability and Gene Expression
5.7K
The structure and stability of mRNA molecules regulates gene expression, as mRNAs are a key step in the pathway from gene to protein. In eukaryotes, the half-life of mRNA varies from a few minutes up to several days. mRNA stability is essential in growth and development. The absence of the proteins regulating its stability, such as tristetraprolin in mice, can cause systemic issues, including bone marrow overgrowth, inflammation, and autoimmunity.
Cis-acting Elements involved in mRNA stability
Cis-acting Elements involved in mRNA stability
5.7K