Information
This kit is recommended for users who:
- have a limited amount of input material
- want to optimise their sequencing experiment for output
- would like to identify and quantify full-length transcripts
- are interested in differential gene expression
- want to characterise and quantify isoforms, splice variants and fusion transcripts
This is an Early Access product.
For more information about our Early Access programmes, please see this article on product release phases.
Please note that to use this kit, you will need to purchase additional 3rd party reagents: see the "3rd Party Materials" tab for more detail.
The cDNA-PCR Sequencing Kit V14 features:
| Feature | Property |
|---|
| Preparation time | 225 minutes + PCR |
| Input requirement | 10 ng poly(A)+ RNA or 500 ng total RNA |
| RT Required | Yes |
| PCR Required | Yes |
| Read length | Enriched for full-length cDNA during PCR |
| Kit chemistry | Kit 14 |
| Associated protocols | cDNA-PCR Sequencing V14 (SQK-PCS114) |
| Multiplexing alternatives | • cDNA-PCR Barcoding Kit V14 (SQK-PCB114.24)
• Flow Cell Wash Kit |
| Pack size | 6 reactions |
| Stability | Shipped at 2–8°C
Long-term storage -20°C
Oxford Nanopore Technologies deem the useful life of the product to be 3 months from receipt by the customer |
The cDNA-PCR Sequencing Kit is used to prepare cDNA for nanopore sequencing from an input of as low as 10 ng poly(A)+ RNA. Users who do not have poly(A)+ enriched RNA can use 500 ng of total RNA but additional optimisation may be required.
The protocol uses a strand switching method to select for full length transcripts, allowing the identification of splice variants, with the incorporation of unique molecular identifiers (UMI) during this step. Taking full-length poly(A)+ RNA, complementary strand synthesis and strand switching are performed using kit-supplied oligonucleotides. Double-stranded cDNA is then generated by PCR amplification using primers that contain 5’ tags which facilitate the ligase-free attachment of Rapid Sequencing Adapters.
This kit has been upgraded to use our Kit 14 chemistry, which includes a reduction of free sequencing adapter and improved modal raw read sequencing accuracies (Q20+) with high output on our latest nanopore: R10.4.1. The flow cell priming and sequencing reagents are also included as part of the sequencing kit and have been reformulated to be compatible with the Kit 14 chemistry upgrade and the R10.4.1 nanopore. Other updates include fuel fix technology, allowing users to run longer experiments without the need for fuel addition during the run.
The cDNA-PCR Sequencing Kit also includes a cDNA RT adapter and RT primer to prime cDNA synthesis from the end of a transcript to reduce overlaps during the reverse transcription step and to allow users to measure poly(A)+ tail lengths. Additionally, a new post-PCR wash step further reduces short artifacts that are seen when using low-quality samples.
Shipping and logistics:
Flow cells and kits are shipped together in an environmentally friendly temperature-controlled shipping box.
Products are shipped to customers within the USA and EU Monday to Thursday. Shipments to Canada, Norway, Korea and Japan are expedited Monday to Wednesday; with Australia and New Zealand leaving our warehouses on a Friday. Shipments to the rest of the world are made on Mondays to allow the full working week for packages to arrive.
The delivery charges are calculated when a quote is raised or during checkout. Once an order is made, the delivery ID and delivery information can be tracked in the Store.
Workflow
Taking full-length poly(A)+ RNA, complementary strand synthesis and strand switching are performed using kit-supplied oligonucleotides. Double-stranded cDNA is then generated by PCR amplification using primers that contain 5’ tags which facilitate the ligase-free attachment of Rapid Sequencing Adapters.
What's in the box
The cDNA-PCR Sequencing Kit V14 (SQK-PCS114) kit contains enough reagents for six reactions.
| Name | Acronym | Cap colour | No. of vials | Fill volume per vial (μl) |
|---|
| Strand Switching Primer II | SSPII | Violet | 1 | 20 |
| RT Primer | RTP | Yellow | 1 | 10 |
| cDNA RT Adapter | CRTA | Amber | 1 | 10 |
| Annealing Buffer | AB | Orange | 1 | 10 |
| Rapid Adapter | RA | Green | 1 | 15 |
| Adapter Buffer | ADB | Clear | 1 | 100 |
| cDNA Primer | cPRM | White cap, grey label | 1 | 40 |
| Elution Buffer | EB | Black | 1 | 500 |
| Short Fragment Buffer | SFB | Clear | 1 | 1,800 |
| Sequencing Buffer | SB | Red | 1 | 700 |
| Library Beads | LIB | Pink | 1 | 600 |
| Library Solution | LIS | White cap, pink label | 1 | 600 |
| Flow Cell Tether | FCT | Purple | 1 | 200 |
| Flow Cell Flush | FCF | Clear cap, light blue label | 1 | 8,000 |