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Related Concept Videos

RNA-seq03:21

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RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases. 
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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.
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Related Experiment Video

Updated: Jan 1, 2026

Rup (RNA-seq Usability Assessment Pipeline) - Quality Control for Bulk RNA-seq Experiments in Eukaryotes
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A protocol to evaluate RNA sequencing normalization methods.

Zachary B Abrams1, Travis S Johnson2,3, Kun Huang3,4

  • 1Department Biomedical Informatics, Ohio State University, 250 Lincoln Tower, 1800 Cannon Dr. Columbus, Columbus, OH, 43210, USA. Zachary.Abrams@osumc.edu.

BMC Bioinformatics
|December 22, 2019
PubMed
Summary
This summary is machine-generated.

RNA sequencing normalization is crucial for accurate transcriptomic data analysis. Our study found that Transcripts Per Million (TPM) best preserves biological signals, outperforming other methods tested.

Keywords:
Biological variabilityNormalizationRNASeqStandardization

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Area of Science:

  • Genomics and Transcriptomics
  • Bioinformatics and Computational Biology

Background:

  • RNA sequencing (RNASeq) enables transcriptome analysis but introduces experimental errors.
  • Normalization methods are essential for reducing non-biological variability in RNASeq data.
  • Standardized comparison of RNASeq normalization technique efficacy is lacking.

Purpose of the Study:

  • To develop and apply tests for evaluating RNASeq normalization methods.
  • To assess the performance of various normalization techniques on a large-scale dataset.
  • To establish a protocol for measuring non-biological variability post-normalization.

Main Methods:

  • Proposed a testing protocol to quantify non-biological variability in RNASeq data.
  • Applied the protocol to evaluate multiple RNASeq normalization methods.
  • Utilized a large-scale, standardized dataset for systematic evaluation.

Main Results:

  • Identified Transcripts Per Million (TPM) as the top-performing normalization method.
  • TPM demonstrated superior preservation of biological signal compared to other tested methods.
  • The study provides a framework for assessing normalization method validity.

Conclusions:

  • Normalization is vital for accurate interpretation of genomic and transcriptomic experiments.
  • Further optimization of RNASeq normalization methods is necessary.
  • The proposed schema facilitates systematic evaluation and improvement of RNASeq normalization techniques.