在白风中识别出抑制基因,转录因子和miRNA. 在 silico 研究研究
相关实验视频
Updated: Jul 22, 2026

06:08
Quantification of Hypopigmentation Activity In Vitro
Published on: March 6, 2019
11.3K
Ahmed Ibrahim AbdElneam1,2, Mohammed Saleh Al-Dhubaibi3, Saleh Salem Bahaj4
1Department of Clinical Biochemistry, Department of Basic Medical Sciences, College of Medicine, Shaqra University, Dawadmi, Saudi Arabia.
Clinical, cosmetic and investigational dermatology
|September 30, 2024
概括
这项研究确定了TYR和MLANA等关键基因,以及它们的调节途径,这对于了解白风病原体至关重要. 这些发现强调发育性色素和氨酸代谢是这种皮肤脱色障碍中的重要过程.
科学领域:
- 皮肤病学和遗传学
- 生物信息学和计算生物学
背景情况:
- Vitiligo 是一种慢性皮肤疾病,其特点是由于黑色素细胞功能障碍而导致局部脱色.
- 在白风病原体的基础上,精确的分子机制仍然不完全理解.
研究的目的:
- 为了确定关键的基因,转录因子 (TFs),微RNA (miRNAs) 和参与白风的生物途径.
- 阐明控制白风中的基因表达的调控网络.
主要方法:
- 从基因表达综合 (GEO) 数据库中对白风微阵列数据集的综合分析.
- 基因本体学 (GO) 和基因和基因组的京都百科全书 (KEGG) 对差异表达基因 (DEG) 的功能注释进行了丰富分析.
- 生物信息学方法用于识别与白风相关的TF和miRNA.
主要成果:
- 确定了包括TYR,MLANA,TYRP1和OCA2在内的10个关键基因与白风有显著关联.
- 发育性色素和色素代谢过程被强调为关键的生物过程.
- 发现,在白风中,铁素代谢和黑色素生成途径发生了显著的改变.
- 提出了一个由十个TF和73个miRNA组成的网络,这些基因可能会调节白风相关基因.
结论:
- 已识别的基因 (TYR,MLANA等) 在白风的进展和表现中具有关键作用.
- 特定的生物和KEGG途径在白风病原发生过程中至关重要.
- 鉴定的TFs和miRNAs揭示了白风中关键基因的调节机制,提供了潜在的治疗点.
相关概念视频
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...
RNA Interference
RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
siRNA - Small Interfering RNAs
Small interfering RNAs, or siRNAs, are short regulatory RNA molecules that can silence genes post-transcriptionally, as well as the transcriptional level in some cases. siRNAs are important for protecting cells against viral infections and silencing transposable genetic elements.
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the ATP-dependent...
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the ATP-dependent...
Experimental RNAi
RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...
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...
Small interfering RNAs (siRNA)
Small interfering RNAs, or siRNAs, are short regulatory RNA molecules that can silence genes post-transcriptionally, as well as the transcriptional level in some cases. siRNAs are important for protecting cells against viral infections and silencing transposable genetic elements.
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the ATP-dependent...
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the ATP-dependent...

