REPLI-g WTA Single Cell Kit
For whole transcriptome amplification of total RNA or mRNA from single cells
The REPLI-g WTA Single Cell Kit enables reliable investigation of effects on transcription regulation at the single-cell transcriptome level and allows uniform amplification of all transcripts from just single cells (1–1000 cells). Dedicated buffers and reagents undergo a unique, controlled decontamination procedure to block amplification of contaminating nucleic acids by the REPLI-g method. The innovative lysis buffer effectively stabilizes cellular RNA, ensuring the resulting RNA accurately reflects the in vivo gene expression profile. All enzymatic steps have been developed to enable efficient processing of RNA for accurate amplification of cDNA, which is achieved with negligible sequence bias using innovative Multiple Displacement Amplification (MDA) technology.
Complete transcriptome coverage, with low experimental variabilityThe REPLI-g WTA Single Cell Kit contains novel REPLI-g SensiPhi DNA Polymerase, as well as an optimized set of buffers and reagents for whole transcriptome amplification (WTA) from just single cells, up to 1000 cells, or equivalently small samples. Following efficient cell lysis, complete removal of genomic DNA (gDNA), and sensitive reverse transcription, the kit utilizes Multiple Displacement Amplification (MDA) to uniformly amplify cDNA across the entire transcriptome with negligible sequence bias (see figure Multiple Displacement Amplification (MDA) technology). cDNA amplified using the REPLI-g WTA Single Cell Kit demonstrates a high degree of reproducibility from cell to cell and experiment to experiment, in both next-generation sequencing (NGS) and in real-time PCR analysis of specific transcripts (see figure High level of experimental reproducibility). The amplified cDNA can be easily used in a variety of downstream applications (see figure REPLI-g amplified cDNA performs like gDNA in downstream experiments).
Significant number of reads map to protein-coding RNAThe ability to amplify mRNA-enriched RNA (poly A+) makes the REPLI-g WTA Single Cell Kit particularly suited for use in NGS to investigate effects on transcription regulation at the single-cell transcriptome level. Amplification of ribosomal RNA (rRNA), which generates more than 90% of NGS reads, is virtually eliminated, allowing generation of meaningful mRNA-Seq data. Following WTA using an mRNA-enrichment protocol, more than 80% of reads map to protein coding RNA (see figure High number of mappable reads from just 3 cells).
Reliable detection of low-abundance transcriptsSingle cell analysis can be challenging when transcript abundance varies greatly within a cell. For accurate results, it is essential that whole transcriptome amplification reliably amplifies all transcripts, regardless of their levels within the cell. The REPLI-g WTA Single Cell Kit is highly suitable for the analysis of even low-abundance transcripts from just single cells. Real-time PCR analysis of the REPLI-g amplified transcript abl-1 demonstrates that even low-copy transcripts can be reliably detected following amplification using the kit (see figure Highly reliable detection of even low-abundance transcripts from single cells). Unlike kits from other suppliers, the REPLI-g WTA Single Cell WTA Kit allows sensitive detection of all transcripts, from high- to low-abundance (see figure More sensitive detection of even low-abundance transcripts).
For use in a wide variety of applications and research areasThe REPLI-g WTA Single Cell Kit efficiently generates and amplifies cDNA from single cells, such as tumor cells, stem cells, or sorted cells and from purified total or poly A+ RNA (10 pg – 100 ng), making the kit highly suited for a wide variety of research areas (see table).
Regulation of transcription is driven by a variety of influences, such as stress, cellular environment, or by disease or somatic genomic variation (e.g., point mutations, copy number variations, or structural variations). Additionally, transcriptional post-processing, such as alternative splicing, results in a differential transcription pattern and, ultimately, physiology. Because of the composite structure of tissues, investigating transcription regulation in single cells, rather than analyzing a larger number of cells and basing result interpretation on their average behavior, is of increasing scientific interest.
The REPLI-g WTA Single Cell Kit has been specifically designed to reliably investigate effects on transcription regulation at the single-cell transcriptome level. It provides highly uniform amplification across the entire transcriptome, with negligible sequence bias. Whole transcriptome amplification from single cells that is provided by the REPLI‑g WTA Single Cell Kit complements the respective whole genome amplification kit (REPLI-g Single Cell Kit). The method is based on MDA technology, which carries out isothermal cDNA amplification utilizing a uniquely processive DNA polymerase capable of replicating up to 70 kb without dissociating from the cDNA template (see figure Multiple Displacement Amplification (MDA) technology).
Unique components of the REPLI-g WTA Single Cell Kit
Genetic analyses often require large amounts of cDNA. Whole transcriptome amplification overcomes the limits of low RNA quantity, allowing a small number of cells, or even single cells, to be analyzed. The easy reaction setup, logical and streamlined processing steps, low handling time of just 20 minutes, and overall reaction time of just 4 hours for the complete amplification of total RNA, make the REPLI-g WTA Single Cell Kit procedure an easy and reliable method.
The REPLI-g WTA Single Cell Kit contains reagents for the following sequential reactions (see figure REPLI-g WTA Single Cell Kit procedure):
Depending on research needs, different protocols are provided for cDNA amplification from single cells or purified RNA:
The REPLI-g WTA Single Cell Kit allows uniform amplification of all transcripts from very small samples, accurately representing the transcription pattern of a single cell with very limited, or no, amplification bias. Depending on the protocol, amplified cDNA is highly suited for use in next-generation sequencing (RNA-Seq), gene expression arrays, or for quantitative PCR analysis.
The REPLI-g WTA Single Cell Kit can be used for whole transcriptome amplification for analysis of:
It is not suitable for use with small nucleic acids (for example):
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