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Updated: Feb 7, 2026

Rapid Synthesis and Screening of Chemically Activated Transcription Factors with GFP-based Reporters
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Rapid Synthesis and Screening of Chemically Activated Transcription Factors with GFP-based Reporters

Published on: November 26, 2013

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使用RNA技术激活发育转录因子,促进心脏的修复

Riley J Leonard, Mason Sweat, Steven Eliason

    bioRxiv : the preprint server for biology
    |February 6, 2026
    PubMed
    概括

    抑制微RNA-200c (miR-200c) 在成年小鼠心肌梗塞后促进心脏快速修复. 这种方法可以恢复心脏功能,并通过激活关键发育途径来逆转缺血性损伤.

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    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...
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    Transcription elongation is a dynamic process that alters depending upon the sequence heterogeneity of the DNA being transcribed. Hence, it is not surprising that the elongation complex's composition also varies along the way while transcribing a gene.
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    Transcription activators are proteins that promote the transcription of genes from DNA to RNA. In most cases, these proteins contain two separate domains ‒ a domain that binds to DNA and a domain for activating transcription; however, in some cases, a single domain is responsible for both binding and activation of transcription, as seen in the glucocorticoid receptor and MyoD.
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    The organization of prokaryotic genes in their genome is notably different from that of eukaryotes. Prokaryotic genes are organized, such that the genes for proteins involved in the same biochemical process or function are located together in groups. This group of genes, along with their regulatory elements, are collectively known as an operon. The functional genes in an operon are transcribed together to give a single strand of mRNA known as polycistronic mRNA.
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    The eukaryotic promoter region is a segment of DNA located upstream of a gene. It contains an RNA polymerase binding site, a transcription start site, and several cis-regulatory sequences.  The proximal promoter region is located in the vicinity of the gene and has cis-regulatory sequences and the core promoter. The core promoter is the binding site for RNA polymerase and is usually located between -35 and +35 nucleotides from the transcription start site. The distal promoter regions are...
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