在T-ALL中对TSPAN32的转录控制揭示了TAL1和NOTCH1之间的相互作用
Grazia Scuderi1, Antonio Arcidiacono1, Eugenio Cavalli1
1Department of Biomedical and Biotechnological Sciences, University of Catania, 95123 Catania, Italy.
Biomedicines
|September 27, 2025
概括
在T细胞急性淋巴细胞白血病 (T-ALL) 中,TSPAN32的调控往往降低. 它的表达受到TAL1-LMO1和NOTCH信号传导等关键瘤性途径的调节,这表明它在控制白血病T细胞增殖方面发挥了作用.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 免疫学 免疫学 免疫学
背景情况:
- T细胞急性淋巴细胞白血病 (T-ALL) 是一种不成熟的T细胞的严重癌症.
- 失调的基因表达和信号通路驱动T-ALL的发展.
- 参与淋巴细胞调节的四素TSPAN32,在T-ALL.中没有得到广泛的研究.
研究的目的:
- 研究TSPAN32在T-ALL中的表达和调节.
- 探索TSPAN32与T-ALL.中关键的致癌途径之间的关系.
- 评估TSPAN32在T-ALL病原和扩散中的潜在作用.
主要方法:
- 对TSPAN32表达的白血病MILE研究 (GSE13159) 的转录组数据的分析.
- 基因组丰富分析 (GSEA) 以确定与TSPAN32.2相关的途径.
- 使用NOTCH抑制 (GSI) 和TAL1-LMO1过度表达的HPB-ALL细胞进行实验验验证.
主要成果:
- 与健康骨髓相比,TSPAN32在T-ALL中经常受到下调.
- TSPAN32的表达与细胞周期程序相反相关,这表明它在增殖控制中的作用.
- TAL1-LMO1的过度表达会诱导TSPAN32,而NOTCH的抑制会部分地重新激活它.
- 在NOTCH和TAL1/LMO1之间存在一个相互监管循环,影响TSPAN32级别.
结论:
- TSPAN32是一种新型的转录标,受主要T-ALL瘤性通路的影响.
- TSPAN32可能调节白血病T细胞的增殖.
- 针对TAL1和NOTCH信号可能会影响TSPAN32表达和T-ALL进展.
更多相关视频
11:32Identification of Transcription Factor Regulators using Medium-Throughput Screening of Arrayed Libraries and a Dual-Luciferase-Based Reporter
Published on: March 27, 2020
7.4K
05:48Cell Aggregation Assays to Evaluate the Binding of the Drosophila Notch with Trans-Ligands and its Inhibition by Cis-Ligands
Published on: January 2, 2018
7.9K
相关概念视频
01:30General Transcription Factors
6.7K
Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
6.7K
03:14Notch Signaling Pathway
6.4K
The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule.
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not...
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not...
6.4K
02:16Transcription Factors
82.3K
Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
82.3K
02:36RNA Polymerase II Accessory Proteins
10.8K
Proteins that regulate transcription can do so either via direct contact with RNA Polymerase or through indirect interactions facilitated by adaptors, mediators, histone-modifying proteins, and nucleosome remodelers. Direct interactions to activate transcription is seen in bacteria as well as in some eukaryotic genes. In these cases, upstream activation sequences are adjacent to the promoters, and the activator proteins interact directly with the transcriptional machinery. For example, in...
10.8K
02:23Master Transcription Regulators
7.7K
Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
7.7K
02:23Master Transcription Regulators
2.7K
2.7K