What Is Nanopore Full-Length Transcriptome Sequencing?

Nanopore full-length transcriptome sequencing uses Oxford Nanopore long-read technology to capture complete RNA molecules from the 5′ end to the 3′ poly(A) tail without fragmentation.

Unlike short-read RNA sequencing, which requires computational reconstruction of fragmented transcripts, Nanopore sequencing reads entire transcripts in a single molecule, enabling accurate isoform identification, alternative splicing analysis, and transcript discovery.

Key Advantages

• • Full-length transcript detection with isoform-level resolution
• • Improved identification of alternative splicing events and novel transcripts
• • Detection of transcript variants and fusion genes
• • More accurate transcript-level expression analysis

N2Jenomics Lab Pvt. Ltd. offers multiple Nanopore transcriptome sequencing strategies, including:

• • cDNA sequencing for comprehensive transcript profiling
• • Direct RNA sequencing for native RNA analysis and modification detection
• • lncRNA sequencing for long non-coding RNA characterization
• • TAIL Iso-Seq for poly(A) tail profiling and alternative polyadenylation analysis

These approaches provide flexible solutions for advanced transcriptomics studies, from isoform discovery to functional RNA characterization.

Why Choose Nanopore for Full-Length Transcriptome Sequencing?

Nanopore sequencing provides a powerful solution for full-length transcriptome analysis by generating long reads that capture complete RNA molecules. Compared with conventional short-read sequencing, it enables more accurate transcript characterization, direct RNA analysis, and flexible experimental options.

• Complete Isoform Characterization

Long-read sequencing captures entire transcripts in a single read, enabling precise identification of transcript isoforms, alternative splicing events, fusion transcripts, and previously unannotated RNA molecules.

• Direct Native RNA Sequencing

Nanopore is the only widely available platform capable of sequencing native RNA directly. This preserves naturally occurring RNA modifications, such as m6A, m5C, and pseudouridine, which are often lost during cDNA synthesis.

• Flexible Sequencing Solutions

Our comprehensive Nanopore portfolio includes multiple workflows tailored to diverse research needs, from transcript discovery and lncRNA analysis to RNA modification profiling and poly(A) tail characterization.

Platform Comparison

Our Nanopore Full-Length Transcriptome Sequencing Services

N2Jenomics Lab Pvt. Ltd. offers four specialized Nanopore sequencing workflows designed to address a wide range of transcriptomics applications.

• Full-Length cDNA Sequencing

This workflow converts poly(A)-selected RNA into full-length cDNA before Nanopore sequencing, providing high sequencing throughput for comprehensive transcriptome analysis.

Applications

• - Transcriptome annotation
• - Isoform expression analysis
• - Novel transcript discovery
• - Alternative splicing studies

• Full-Length lncRNA Sequencing

Designed to profile both polyadenylated and non-polyadenylated long non-coding RNAs, this approach enables accurate reconstruction of complete lncRNA transcripts, including low-abundance and complex RNA species.

Applications

• - lncRNA discovery
• - Functional annotation
• - Non-poly(A) RNA profiling
• - eRNA and circRNA analysis

• Direct RNA Sequencing

Native RNA molecules are sequenced directly without reverse transcription or PCR amplification, preserving transcript integrity and RNA base modifications while providing accurate isoform information.

Applications

• - Epitranscriptomics
• - RNA modification profiling
• - Native RNA quantification
• - Bias-free transcript analysis

• TAIL Iso-Seq

TAIL Iso-Seq combines full-length transcript sequencing with poly(A) tail analysis, enabling simultaneous investigation of transcript isoforms, poly(A) tail length, and alternative polyadenylation events.

Applications

• - Poly(A) tail profiling
• - Alternative polyadenylation (APA)
• - mRNA stability studies
• - Translation regulation research

Transcriptome Analysis Capability Comparison

Rating Guide

• ★★★ – Excellent capability
• ★★ – Strong capability
• ★ – Basic capability
• — – Not supported
•  

Technology and Workflow

Our Nanopore full-length transcriptome sequencing workflow is designed for reproducibility and quality at every stage.

1. RNA Quality Assessment

RNA samples are evaluated for integrity, concentration, and purity using industry-standard quality control methods. Acceptance criteria vary depending on the selected sequencing workflow.

2. Library Preparation

Libraries are prepared using optimized protocols specific to each application, including full-length cDNA synthesis, direct native RNA sequencing, or poly(A) tail-preserving library construction.

3. Library Quality Control

Prepared libraries undergo quality assessment to verify fragment size distribution, concentration, and overall library integrity before sequencing.

4. Nanopore Sequencing

Sequencing is performed on Oxford Nanopore platforms using high-performance flow cells with real-time run monitoring to maximize data quality and yield.

5. Data Processing

Raw sequencing data are processed through high-accuracy basecalling, quality filtering, barcode demultiplexing, and, where applicable, RNA modification detection.

6. Data Delivery

Final deliverables include raw sequencing files, processed full-length transcript data, and a comprehensive quality control report, provided through secure online transfer or external storage.

Sample Requirements

High-quality RNA is essential for reliable full-length transcriptome sequencing. General recommendations are provided below and may be adjusted according to project requirements.

Sample Submission Notes

• • Project-specific input requirements may vary.
• • Ship purified RNA on dry ice using RNase-free tubes.
• • For Direct RNA sequencing, freshly flash-frozen tissue is recommended whenever possible.
• • Contact our technical team before sample submission for project-specific recommendations.

Bioinformatics Analysis

Our bioinformatics workflow transforms sequencing data into comprehensive and biologically meaningful transcriptome insights.

• Standard Analysis

• - High-accuracy basecalling, quality filtering, and demultiplexing
• - Read alignment or reference-free transcript reconstruction
• - Gene and isoform expression quantification
• - Alternative splicing identification
• - Differential gene and transcript expression analysis
• - Functional annotation using Gene Ontology (GO), KEGG pathways, and protein domain databases
• - Comprehensive sequencing quality assessment and project report

• Optional Advanced Analyses

• - Long non-coding RNA (lncRNA) identification and classification
• - Fusion transcript detection
• - Alternative polyadenylation (APA) analysis
• - Poly(A) tail length profiling
• - RNA modification analysis from Direct RNA sequencing
• - Novel transcript discovery and annotation

Deliverables

N2Jenomics Lab Pvt. Ltd. provides complete, well-organized project deliverables to support downstream analysis, publication, and data interpretation.

Applications

Nanopore full-length transcriptome sequencing enables comprehensive transcript analysis across a wide range of biological and biomedical research areas.

• Transcriptome Annotation

Generate accurate full-length transcript models for improved genome annotation and identification of novel transcript isoforms.

• Alternative Splicing Analysis

Characterize complex splicing patterns and discover disease-associated transcript variants with high confidence.

• RNA Modification Profiling

Analyze native RNA modifications while simultaneously obtaining full-length transcript information using Direct RNA sequencing.

• Cancer Research

Identify gene fusions, aberrant transcript isoforms, and allele-specific expression associated with cancer development and progression.

• lncRNA Studies

Resolve complete long non-coding RNA transcripts, including low-abundance and structurally complex lncRNAs.

• Poly(A) Tail Analysis

Measure poly(A) tail length and investigate alternative polyadenylation, mRNA stability, and post-transcriptional regulation.

Choosing the Right Transcriptome Sequencing Solution

Selecting the appropriate sequencing strategy depends on your research objectives.

• NGS RNA-Seq

Ideal for cost-effective gene expression profiling when full-length transcript information is not required.

• PacBio Iso-Seq

Recommended for highly accurate full-length transcript sequencing and novel isoform discovery.

• Nanopore Full-Length cDNA Sequencing

Best suited for high-throughput isoform profiling, transcript discovery, alternative splicing, and fusion transcript analysis.

• Nanopore Direct RNA Sequencing

The preferred choice for native RNA sequencing, RNA modification analysis, and unbiased transcript characterization.

• TAIL Iso-Seq

Designed for studies focused on poly(A) tail length, alternative polyadenylation, and mRNA stability.

• Full-Length lncRNA Sequencing

Optimized for comprehensive characterization of long non-coding RNAs, including non-polyadenylated transcripts.

Need help selecting the most suitable workflow? Our technical experts can recommend the optimal sequencing strategy based on your sample type, research objectives, and downstream analysis requirements.

1. What is the difference between Nanopore cDNA and Direct RNA sequencing?

Nanopore cDNA sequencing converts RNA into cDNA before sequencing, making it ideal for high-throughput transcriptome analysis. Direct RNA sequencing analyzes native RNA molecules without reverse transcription, allowing simultaneous detection of RNA modifications while preserving the original transcript.

2. Can Nanopore sequencing detect RNA modifications?

Yes. Direct RNA sequencing enables identification of RNA modifications, including m6A, m5C, pseudouridine, and other epitranscriptomic marks directly from native RNA molecules.

3. When should I choose TAIL Iso-Seq?

TAIL Iso-Seq is recommended for studies investigating poly(A) tail length, alternative polyadenylation (APA), mRNA stability, and post-transcriptional gene regulation.

4. What are the RNA sample requirements?

Most full-length cDNA and lncRNA projects require high-quality total RNA (≥1 µg), while Direct RNA sequencing typically requires ≥2 µg of high-quality RNA. Exact requirements may vary depending on sample type and project design.

5. What bioinformatics analyses are included?

Our standard analysis package includes:

• • Basecalling and quality control
• • Transcript identification
• • Gene and isoform quantification
• • Alternative splicing analysis
• • Differential expression analysis
• • Functional annotation

• Optional analyses such as lncRNA identification, fusion transcript detection, APA analysis, and RNA modification profiling are also available.

6. Can this service detect long non-coding RNAs (lncRNAs)?

Yes. We offer dedicated full-length lncRNA sequencing for comprehensive analysis of both polyadenylated and non-polyadenylated lncRNAs, enabling accurate characterization of complex transcript isoforms.

7. How does Nanopore compare with PacBio Iso-Seq?

Both technologies generate full-length transcript sequences. PacBio Iso-Seq is known for its high read accuracy, whereas Nanopore offers higher sequencing throughput, flexible workflows, direct RNA sequencing, and poly(A) tail analysis, making it suitable for a broader range of transcriptomics applications.

8. Which species are supported?

We accept RNA samples from virtually any organism. Analysis can be performed using a reference genome or through reference-free transcript reconstruction for species without well-annotated genomes.