相关实验视频

Updated: Jun 12, 2025

Methods to Investigate the Regulatory Role of Small RNAs and Ribosomal Occupancy of Plasmodium falciparum

Methods to Investigate the Regulatory Role of Small RNAs and Ribosomal Occupancy of Plasmodium falciparum

Published on: December 4, 2015

在thalassemic erythropoiesis中微RNA-155的表达

Tipparat Penglong¹, Nuttanan Pholngam^2,3, Nasra Tehyoh⁴

¹Department of Pathology, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla, Thailand.

|September 24, 2024

概括

微RNA-155 (miR-155) 的上调促进了红色球体的扩散和差异化在β-thalassemia. 这项研究揭示了miR-155通过通过c-myc控制红细胞发育来调节无效的红质形成.

科学领域:

血液学血液学血液学
分子生物学分子生物学
遗传学是一个遗传学.

背景情况:

不有效的红色素形成 (IE) 是β-thalassemia的标志,导致贫血和相关病理.
微RNAs (miRs) 是血液形成的关键调节者,miR-155 涉及正常和病理条件.
在beta-thalassemia/HbE患者中,miR-155的高调,但其在beta-thalassemia中的特定作用仍然未被探索.

研究的目的:

为了研究miR-155在β-thalassemia中的红色素形成过程中的表达和功能.
确定miR-155调制对红细胞增殖和分化的影响.
为了确定miR-155的下游目标,它参与了无效的红色素形成的调节.

主要方法:

量化逆转录-聚合酶连锁反应 (qRT-PCR) 用于测量miR-155和thalassemic小鼠的红细胞亚群中的基因表达.
在实验室培养小鼠骨髓红色球原体细胞进行了.
使用miR-155抑制剂和模仿剂进行了功能增加和丧失实验,随后进行了流动细胞计和赖特-吉姆萨染色以评估红色素分化.

主要成果:

在beta-thalassemic小鼠的红色素形成过程中,miR-155的表达被发现在体内和体外都被上调.
调节miR-155水平影响了红细胞增殖和分化;上调增强了thalassemic细胞中的这些过程.
miR-155的上调显著增加了基性和多色红细胞的百分比,而抑制则减少了这些群体. 鉴定出c-myc是一种由miR-155.5调节的直接向基因.

结论:

miR-155在调节β-血症中无效的红色素形成方面发挥着重要作用.
该机制涉及miR-155控制红细胞增殖和分化,部分通过其调节c-myc表达.
向miR-155可能为管理β-thalassemia相关性贫血提供治疗策略.

关键词:

不有效的红色素质形成.泰拉塞米病的小鼠 c-myccc 在线观看在 miR-155 系统中,它是 miR-155 的.

更多相关视频

Mouse Fetal Liver Culture System to Dissect Target Gene Functions at the Early and Late Stages of Terminal Erythropoiesis

Mouse Fetal Liver Culture System to Dissect Target Gene Functions at the Early and Late Stages of Terminal Erythropoiesis

Published on: September 9, 2014

In Vivo Nanovector Delivery of a Heart-specific MicroRNA-sponge

In Vivo Nanovector Delivery of a Heart-specific MicroRNA-sponge

Published on: June 15, 2018

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...

Erythropoiesis

Erythropoiesis

Red blood cells (RBCs) transport oxygen to all body tissues. These cells survive only for 120 days and then need to be replenished. Erythropoiesis is the process of RBC production. In healthy individuals, erythropoiesis ensures all tissues are amply supplied with oxygen. In addition, blood loss due to injury leads to a drop in the physiological oxygen level that will cause erythropoiesis. Any defect in erythropoiesis leads to several physiological disorders, including thalassemia, anemia,...