Invitrogen Cells-to-cDNA II Kit
RNA isolation not required
Manufacturer: Invitrogen AM1723
The Ambion Cells-to-cDNA II Kit (patent pending) produces cDNA from cultured mammalian cells in less than two hours. No RNA isolation is required. This kit is ideal for those who want to perform reverse transcription reactions on small numbers of cells, numerous cell samples, or for scientists who are unfamiliar with RNA isolation.
- No RNA purification required
- From cells in culture to cDNA in less than two hours
- Detect rare messages injust one cell
- Ideal for labs not equipped for RNA isolation
The Cells-to-cDNA II Kit (patent pending) integrates RNase inactivation and DNase I treatment into an RT-PCR compatible cell lysis buffer, eliminating RNA isolation altogether. Most cell lysis buffers contain strong denaturants that if carried over into enzymatic reactions would inhibit or inactivate most enzymes. If a lysis buffer without strong denaturants is used, endogenous RNase can quickly degrade cellular RNA. The Cells-to-cDNA II Kit contains a novel Cell Lysis Buffer that inactivates endogenous RNases without compromising downstream enzymatic reactions. After inactivation of RNases, the cell lysate can be directly added to a cDNA synthesis reaction. Cells-to-cDNA II is compatible with both one-step and two-step RT-PCR protocols.
QuantitativeLinear Results and No Detectable DNA Contamination
To illustrate the quantitative, linear response of Cells-to-cDNA II to variations in input cell number, a real-time quantitative RT-PCR experiment was performed using the ABI 7700 Sequence Detection System. Plotting cycle threshold (Ct) versus cell concentration for GAPDH yielded a standard curve with a correlation of 0.99. Thus, Cells-to-cDNA II yields linear results for 1 to 10,000 cells/µLin a real-time RT-PCR two-step assay. It should also be noted that the minus-template PCR control for the GAPDH experiment was negative, indicating complete removal of genomic DNA.
The kit comes with everything you need to go from cultured cells to PCR-ready cDNA in less than two hours; no RNA isolation is required. Cells are first washed with PBS and then resuspended in the Cell Lysis Buffer. A brief heating simultaneously lyses the cells and inactivates RNases. An optional DNase digestion is then performed to degrade genomic DNA, followed by a heat inactivation step. A fraction of the cell lysate is then used in a reverse transcription reaction with the included reagents.
SuperTaq Thermostable Taq DNA Polymerase is recommended and available separately (Cat. Nos. AM2050 and AM2052). For optimal amplification of fragments greater than 1kb, use SuperTaq Plus Thermostable Taq DNA Polymerase (Cat. Nos. AM2054 and AM2056).
PCR and Real-Time PCR, Real Time PCR (qPCR), Real-Time PCR Directly from Samples, Reverse Transcription, cDNA Synthesis Direct from Cells
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|1X PBS, Cell Lysis II Buffer, µL DNase 1, 10X RT Buffer, M-MLV Reverse Transcriptase, RNase Inhibitor, dNTP Mix, Random Decamers, Oligo(dT)18 Primers, Armored RNA® Control, Armored RNA® Primer Pair, and Endogenous Primer Pair should be stored at
–20°C. Nuclease-free water may be stored at any temperature.
|Real-Time Quantitative PCR (qPCR), Reverse Transcriptase PCR (RT-PCR)|
|7 kb or less|
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For Research Use Only. Not for use in diagnostic procedures.