mRNA sequencing (mRNA-Seq) has become the gold standard for genome-wide gene expression analysis in biomedical research. By enriching poly(A)+ transcripts, researchers can accurately quantify coding RNA and identify differential gene expression across biological conditions.
With the rapid growth of precision medicine, cancer research, immunology, and drug discovery, mRNA-Seq is widely used to understand transcriptional changes underlying disease mechanisms and therapeutic responses.
Key Application Scenarios
|
Application |
Description |
|
Differential gene expression |
Identify gene expression changes across conditions |
|
Cancer transcriptomics |
Identification of tumor-related gene expression changes and therapeutic targets. |
|
Drug response studies |
Monitoring transcriptional responses to drug treatment. |
|
Immunology research |
Analyzing immune cell activation and cytokine regulation. |
|
Biomarker discovery |
Identify disease-associated genes |
Current Industry Challenges
Despite its widespread use, researchers often encounter several challenges:
|
Challenge |
Impact |
|
RNA degradation |
Reduced poly(A) enrichment efficiency |
|
Complex & Time-Consuming Workflows |
Increased hands-on time |
|
Library variability |
Inconsistent sequencing performance |
|
Reverse transcription bias |
Uneven transcript coverage |
These issues can reduce library complexity and sequencing accuracy.
Yeasen Rapid mRNA Library Preparation Workflow
To simplify transcriptome library construction while maintaining high sequencing quality, Yeasen provides an optimized mRNA library preparation workflow designed for:
- Faster turnaround time
- High reproducibility
- Stable library yield
- Excellent sequencing performance
Typical workflow:
The optimized protocol reduces preparation time while maintaining high library complexity and consistent insert size distribution.
Example Case Study
Reliable mRNA-Seq Performance Across Different RNA Inputs
Using Yeasen’s optimized mRNA library preparation workflow, high-quality libraries were successfully generated across varying RNA input amounts.
Results demonstrated:
- Consistent library yields
- Stable insert size profiles
- High mapping rates
- Excellent transcript coverage uniformity
Even low-input RNA samples maintained strong sequencing performance, supporting reliable downstream differential expression analysis.
Figure 1. High-quality mRNA library preparation across diverse sample qualities and input amounts.
Libraries were constructed using the Hieff NGS™ mRNA Library Prep Kit (Cat# 12629) combined with Hieff NGS™ EvoMax RNA Library Prep Kit (dNTP, Cat# 12341). The workflow demonstrated robust performance using animal and plant RNA samples of varying qualities, with input amounts ranging from 100 to 400 ng. Residual rRNA rates are indicated for each sample.
Library Preparation Tips
|
Factor |
Recommendation |
|
RNA quality |
RIN ≥7 recommended |
|
RNA input |
Accurate quantification before enrichment |
|
Fragmentation |
Optimize to control insert size |
|
PCR cycles |
Avoid excessive amplification |
Proper sample preparation and optimized workflows ensure reliable gene expression profiling results.
FAQ
Q1. When should I choose mRNA-seq library preparation?
mRNA-seq is ideal when the primary goal is protein-coding gene expression profiling. It enriches poly(A)+ transcripts, enabling efficient sequencing of coding mRNAs while reducing rRNA background.
Q2. What RNA quality is required for mRNA-seq?
mRNA-seq typically requires high-quality RNA (RIN ≥7) because poly(A) enrichment relies on intact transcripts. Degraded samples may result in biased coverage toward the 3' end.
Q3. Can mRNA-seq detect non-coding RNAs?
mRNA-seq mainly captures polyadenylated transcripts. While some lncRNAs with poly(A) tails may be detected, many non-polyadenylated RNAs are missed.
Q4. What is the main advantage of mRNA-seq?
By removing most rRNA and focusing on poly(A)+ RNA, mRNA-seq provides higher sequencing efficiency and lower required sequencing depth for coding transcript analysis.
Related Product
|
Category |
Name |
Cat. No. |
Size |
|
|
RNA Lib Prep |
Dual-mode(Strand specific & Non Strand specific) |
12308ES24/96 |
24 T/96 T |
|
|
Premix version |
12340ES24/96 |
|||
|
12341ES24/96 |
||||
|
mRNA isolation |
Eukaryotic mRNA |
12629ES24/96 |
24 T/96 T |
|
|
rRNA depletion |
Human/Mouse/Rat |
Hieff NGS™ MaxUp Human/Mouse/Rat rRNA Depletion Kit(rRNA ITS/ETS) |
12257ES24/96 |
|
|
Hieff NGS™ MaxUp Human/Mouse/Rat rRNA Depletion Kit(rRNA ITS/ETS) 2.0 |
12726ES24/96 |
|||
|
Plant |
12254ES24/96 |
|||
|
Beads |
- |
12602ES03/08/56 |
1/5/60 mL |
|