Experimental methods
实时定量 PCR(qPCR)
What this technique is
- Category
- Molecular biology
- Principle
- 在 PCR 扩增过程中同步监测并定量特定 DNA 序列,可结合 DNA 输入量或内参序列进行归一化。
- Input samples
- DNA · cDNA
- Research questions
- 比较目标序列在不同样品或实验组中的相对量。
- Output and readout
- 获得循环阈值(Ct),结合内参基因和对照实验组分析相对表达量。
- Applicability
- 采用匹配的正反向引物,对已制备 DNA 或 cDNA 进行实时扩增检测。
- Limitations
- RNA 样品需先进行反转录;本检测阶段不包含 RNA 提取或反转录。靶序列和内参由具体研究问题确定。
Standard concept source:OBI:0000893 · OBI · 2026-05-08
- Readout targets
- DNA 或 cDNA 中的特定靶序列。
已发布模型
Published protocol versions
- 大鼠脑组织 Sirt1 转录本定量(cDNA qPCR)
Source version:protocols.io · vv1 · Miquel Vila · This is an open access protocol distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited
References
- real time polymerase chain reaction assay (OBI:0000893), OBI 2026-05-08
- Vila M. Gene expression analysis by quantitative Real-Time PCR (qPCR). protocols.io v1. DOI:10.17504/protocols.io.ewov1oyz2lr2/v1.
- Schisandrin ameliorates cognitive deficits, endoplasmic reticulum stress and neuroinflammation in streptozotocin (STZ)-induced Alzheimer’s disease rats. PMID:32336744. DOI:10.1538/expanim.19-0146.