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相关概念视频

Real Time RT-PCR02:57

Real Time RT-PCR

65.0K
Real-time reverse transcription-polymerase chain reaction, or Real-time RT-PCR, is an analytical tool used to determine the expression level of target genes. The method involves converting mRNA to complementary DNA with the help of an enzyme known as reverse transcriptase, followed by the PCR amplification of the cDNA. These two processes can be performed simultaneously in a single tube or separately as a two-step reaction.
The real-time quantification of the number of amplified products is...
65.0K
Transcription01:10

Transcription

156.1K
Overview
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
156.1K
PCR01:32

PCR

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Overview
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Measurement: Standard Units03:38

Measurement: Standard Units

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Every measurement provides three kinds of information: the size or magnitude of the measurement (a number), a standard of comparison for the measurement (a unit), and an indication of the uncertainty of the measurement. While the number and unit are explicitly represented when a quantity is written, the uncertainty is an aspect of the errors in the measurement results.
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Transcription Factors02:16

Transcription Factors

82.7K
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...
82.7K
Master Transcription Regulators02:23

Master Transcription Regulators

7.8K
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...
7.8K

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Quantitative Real-Time PCR using the Thermo Scientific Solaris qPCR Assay
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实时逆转录定量PCR (RT-qPCR) 方法标准和报告实践

Stephen A Bustin1, Carl T Wittwer2

  • 1Medical Technology Research Centre, Faculty of Health, Education, Medicine and Social Care, Anglia Ruskin University, Chelmsford, United Kingdom.

Clinical chemistry
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概括
此摘要是机器生成的。

实时逆转录定量PCR (RT-qPCR) 试验的方法报告仍然很差,RNA完整性和PCR效率等关键参数显著下降. 遵守定量PCR实验 (MIQE) 发布最低信息准则是不够的,影响了测试可重复性.

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科学领域:

  • 生命科学 生命科学
  • 分子生物学分子生物学
  • 生物技术是生物技术.

背景情况:

  • 对于实时逆转录定量PCR (RT-qPCR) 的方法质量和报告透明度仍然存在担忧.
  • 随着COVID-19的流行,这些问题在诊断测试中得到了重视.
  • 2025年更新的定量PCR实验 (MIQE) 发布最低信息准则对标准化检测报告产生了适度的影响.

研究的目的:

  • 评估2007年至2025年间RT-qPCR方法报告的趋势.
  • 评估MIQE指南对报告质量的影响.
  • 为了比较不同时间点,地区和MIQE引用状态的报告实践.

主要方法:

  • 在2019年和2024年的PubMed中央搜索和手动评估355篇全文文章.
  • 参数分析包括RNA完整性,寡核酸披露,参考基因验证和PCR效率.
  • 针对性队列的评估,重点关注参考基因和PCR效率.

主要成果:

  • 核心RT-qPCR参数的报告在2019年至2024年期间仍然很低或下降.
  • 报告RNA完整性从22%下降到11%,参考基因验证从13%下降到5%,PCR效率报告从13%下降到1%.
  • 2024年的MIQE引用论文显示出更好的坚持,但仍然遗漏了必要的细节;亚洲主导RT-qPCR输出,而欧洲在MIQE引用方面领先.

结论:

  • 在RT-qPCR测定中,实验设计和报告不完整,继续损害可重现性和稳定性.
  • 尽管更新了MIQE指南,但遵守基本报告标准仍然不足.
  • 需要进一步努力,以提高RT-qPCR出版物的方法质量和透明度.