相关实验视频

Updated: May 28, 2026

Evaluating In Vitro DNA Damage Using Comet Assay

Evaluating In Vitro DNA Damage Using Comet Assay

Published on: October 11, 2017

在Glioblastoma Multiforme中,miR-124介导的temozolomide敏感性和DNA修复调节

Maryam Mafi Golchin¹, Ehsan Arefian², Zahra Fekrirad³

¹Department of Biotechnology, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran.

|March 10, 2025

概括

过度表达miR-124通过减少DNA修复基因表达来增强质母细胞多形瘤 (GBM) 细胞对temozolomide (TMZ) 的敏感性. 这表明miR-124可以改善质瘤化学敏感性.

科学领域:

在瘤学瘤学.
分子生物学分子生物学
遗传学是一个遗传学.

背景情况:

多形质母细胞瘤 (GBM) 是一种具有攻击性的原发性脑瘤.
目前的治疗方法,包括temozolomide (TMZ),经常面临抗药性.
与TMZ结合的微RNA (miRNA) 向疗法是提高治疗疗效的潜在策略.

研究的目的:

研究miR-124过度表达对GBM细胞系中TMZ抗性的影响.
分析miR-124对参与DNA修复和自的基因的影响.
探索miR-124作为GBM的潜在治疗调节器.

主要方法:

生物信息学预测miR-124-3p目标基因.
在使用lentiviral转导的U-87和U-251GBM细胞系中,miR-124的过度表达.
测量MTT以评估TMZ敏感性和qRT-PCR以量化基因表达.

主要成果:

过度表达miR-124显著增加了U-87 GBM细胞中的TMZ敏感性.
DNA修复基因 (例如PRRX1,ETS,VIM,PTBP1) 和自基因 (Beclin-1,Atg-5) 的mRNA水平被miR-124显著降低.
生物信息学分析发现了miR-124-3p.p.的60个潜在目标基因.

结论:

通过miR-124过度表达调节DNA修复通路可能会增强质瘤细胞对TMZ的化学敏感性.
miR-124可能会准参与DNA修复和自的基因,从而导致TMZ耐药性.
需要进一步的研究来证实自在miR-124的抗癌活性中的作用.

关键词:

自自是一种自的过程.质母细胞瘤多形泰莫佐洛米德 (Temozolomide) 是一种一种在 miR-12424 里面.

更多相关视频

Characterization of Functionally Associated miRNAs in Glioblastoma and their Engineering into Artificial Clusters for Gene Therapy

Characterization of Functionally Associated miRNAs in Glioblastoma and their Engineering into Artificial Clusters for Gene Therapy

Published on: October 4, 2019

A Rapid Screening Workflow to Identify Potential Combination Therapy for GBM using Patient-Derived Glioma Stem Cells

A Rapid Screening Workflow to Identify Potential Combination Therapy for GBM using Patient-Derived Glioma Stem Cells

Published on: March 28, 2021

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 the pre-miRNA ends...

Abnormal Proliferation

Abnormal Proliferation

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 daughter...

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 the pre-miRNA...