相关实验视频

Updated: Sep 10, 2025

Analysis of Combinatorial miRNA Treatments to Regulate Cell Cycle and Angiogenesis

Analysis of Combinatorial miRNA Treatments to Regulate Cell Cycle and Angiogenesis

Published on: March 30, 2019

在miR-34a绝杀细胞系中,MALAT1的表达是不受调节的

Andrea Corsi¹, Tonia De Simone¹, Angela Valentino¹

¹Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Strada le Grazie 8, 37134 Verona, Italy.

|August 27, 2025

概括

微RNA-34a (miR-34a) 淘汰细胞表现出减少的增殖和增加的MALAT1表达,揭示了调节细胞生长的新型miR-34a/MALAT1轴.

科学领域:

分子生物学
遗传学
细胞生物学

背景情况:

微RNA-34a (miR-34a) 是一种非编码的微RNA,对于调节细胞过程如分化,亡和增殖至关重要.
miR-34a的失调与各种疾病,包括癌症和炎症有关.
由miR-34a控制的精确分子机制尚未完全阐明.

研究的目的:

产生miR-34a淘汰细胞系以识别miR-34a调节的新基因.
研究miR-34a对细胞过程的功能影响.

主要方法:

使用CRISPR-Cas9基因编辑创建miR-34a淘汰HeLa和293T细胞系.
使用RNA-seq和qPCR评估了增殖率和分析了基因表达特征.
通过检查黑色素瘤细胞中miR- 34a- 5p沉默后的MALAT1表达得到验证.

主要成果:

在两种细胞系中, miR- 34a 淘汰导致细胞增殖显著下降.
消去miR-34a导致长非编码RNAMALAT1的上调.
在黑色素瘤细胞中的miR-34a-5p沉默也导致了MALAT1的过度表达.

结论:

这项研究确定了涉及miR-34a和MALAT1的新型调节轴.
这种miR-34a/MALAT1轴在细胞增殖过程的调节中起作用.

关键词:

关于CRISPR的研究一个MALAT1 基因编辑其他类型在cRNA miR-34a的使用情况微型RNA

更多相关视频

CRISPR Gene Editing Tool for MicroRNA Cluster Network Analysis

CRISPR Gene Editing Tool for MicroRNA Cluster Network Analysis

Published on: April 25, 2022

Induction of Mesenchymal-Epithelial Transitions in Sarcoma Cells

Induction of Mesenchymal-Epithelial Transitions in Sarcoma Cells

Published on: April 7, 2017

相关概念视频

MicroRNAs

MicroRNAs

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...