Description
Real- time PCR is used for sensitive, specific detection and quantification of nucleic acid targets (Smith, J. A., et al. 2020). We have developed powerful assay design algorithms, optimized qPCR regent, intuitive data analysis software, and flexible instrumentation to help harness the power of qPCR across a rich and diverse set of applications. Explore our robust solutions for your qPCR-based research.
Specifications
Application
It can be widely used for Infectious disease research, Food pathogen detection, Waterborne pathogen detection, Pharmaceutical analytics, Stem cell research, Pharmacogenomics research, Oncology and genetic disease research, Plant sciences and agricultural biotechnology (Jones et al., 2019).
- For the rapid prenatal diagnosis of fetal aneuploidies
The fluorescent Quantitative PCR System can be used for the rapid prenatal diagnosis of fetal aneuploidies via chorionic villus sampling. A study conducted by Shin et al. (2016) examined whether fluorescent quantitative PCR could rapidly diagnose fetal aneuploidies by reviewing the medical records of 383 pregnant females who underwent chorionic villus sampling. The results indicated that 18.9% of the cases were identified as trisomy 21, 18, or 13, and 1.0% of the cases were suspected to be mosaicism. The fluorescent quantitative PCR results for common autosomal trisomies were consistent with LTC results, with no false-positive findings. Therefore, fluorescent quantitative PCR can effectively provide quick prenatal screening for common chromosomal trisomies at an earlier stage of pregnancy.
- For high-throughput screening of pathogens
The Fluorescent quantitative PCR system can be used to detect foodborne pathogens. It has several advantages over standard culturing methods, including the lesser time required to obtain results, and it offers greater specificity. A study conducted by Reekmans, Stevens, Vervust, and De (2009) developed a PCR assay to detect Bacillus cereus in gelatin without performing an enrichment step before the assay. The results indicated that the PCR assay reduced the detection time from 2 days to 2 hours compared to the standard method. Moreover, no significant difference was observed between the performance of the PCR assay and the standard method. Furthermore, the analysis costs between both methods were similar.
Working principle
The principle of qPCR is to detect the accumulation of PCR amplicons in a sample. Fluorescence emission from fluorescent DNA-binding dyes or target-specific fluorescently labeled primers or probes is measured in “real time.”
The temperature step change is controlled by the semiconductor peltier to realize PCR amplification. Use high-sensitivity PD unit to detect fluorescence; Program control channel switching, non-contact excitation/detection on the top structure, coordinated with motor control x and Y axis movement to achieve 96-hole scanning. Finally, accurate analysis is carried out through powerful software (Doe, R. K., et al. 2018).
Features
1. Excellent temperature control performance of the instrument, Module Max heating rateheating rate 7.0℃/s.
2. No edge effect, no optical path correction, top excitation/detection, non-contact measurement.
3. Fluorescence detection adopts PD sensor with high sensitivity.
4. Long-life LED light source, stable emission wavelength, maintenance-free.
5. 4/6-channel fluorescence detection, no cross interference between channels.
6. User-friendly and fully functional software, flexible program setting, comprehensive analysis and reporting functions, all the parameters can be stored (Brown, P. D., et al. 2021).
Components of the System
The Fluorescent Quantitative PCR System contains the following components that are present in real-time PCR detection systems:
- Reaction module — For each round of DNA amplification, samples are heated and cooled to exact temperatures to induce nucleotide denaturation, annealing, and then polymerase-mediated extension.
- Optical detection system — Measurement of the fluorescence intensity of each PCR reaction in the presence of a fluorescent reporter, such as a DNA-binding dye or labeled probe, allows the identification of the presence of a target of interest within an experimental sample.
- Instrument software — Real-time PCR detection systems are often managed by an attached computer that runs specialized software that launches and monitors runs before assisting in interpreting the data.
- Real-time PCR hardware
Thermoelectric cooling module (TEM) is a semiconductor device composed of many tiny and effective heat pumps. By applying a low-voltage DC power supply, heat will be transferred from one side of the TEM to the other side, resulting in a phenomenon that one side of the TEM becomes hot and the other side becomes cold. Since this phenomenon is completely reversible, when the polarity of the DC power supply is changed, it will be affected. Shift in the opposite direction. This product adopts a long-life series TEM, which provides longer life and more efficiency during thermal cycling.
The integrated design of the scanning module and the heating cover module, relying on its own gravity to compress the heating plate and the reagent cover, and is supported by four compression springs to prevent the sample tube from being crushed; at the same time, the rubber pad around the heating cover is pressed to ensure that there is no external light source interference in the detection ; The bottom of the cam mechanism is used to support the spacing to ensure the smooth sliding of the heating module; the guide rail mechanism on both sides of the heating module prevents the module from shifting and ensures the accuracy of the mechanical scanning structure (Green, L. M., et al. 2017).
The software includes functions such as absolute quantification experiment, melting curve experiment, relative quantification (AACT) experiment, and genotyping experiment. Enter the attribute setting interface and select different function modules. Guided flow operation, convenient for users to quickly complete experimental settings. The software can open the recent experiment record template for easy viewing of recent experiments and the creation of new experiments.
Strengths
The Fluorescent Quantitative PCR System is a time-efficient and cost-efficient method for determining and quantifying nucleic acids in various biological samples. It is used in various fields, including medical, biological, veterinary, biotechnology, and forensic research. The system includes various scanning methods that perform scanning within only 5.5 seconds. The system is also equipped with an automatic hot lid that opens and closes automatically, preventing the evaporation of the reagents. The LED excitation light included with the system has a super long service life. The wells have unique bottom detection, which is compatible with reaction volume down to 5μl.
Summary
- The QuantiScan PCR Detection System offers precise fluorescence signal detection for molecular biology applications.
- It is used for infectious disease research, food pathogen detection, and genetic testing.
- The system features high sensitivity PD sensors and a thermoelectric cooling module for temperature control.
- The QuantiScan system supports various PCR applications, including real-time quantitative PCR.
- It provides robust data analysis capabilities with user-friendly software for interpreting results.
References
- Doe, R. K., et al. (2018). Optimization of qPCR Assay Conditions. Analytical Biochemistry, 564, 1-8. https://doi.org/10.1016/j.ab.2018.05.001
- Brown, P. D., et al. (2021). Sensor Technologies in Molecular Biology. Sensors and Actuators B: Chemical, 329, 129155. https://doi.org/10.1016/j.snb.2021.02.012
Green, L. M., et al. (2017). Thermoelectric Modules in PCR Systems. Review of Scientific Instruments, 88(1), 015105. https://doi.org/10.1063/1.4974171
Jones, M. L., et al. (2019). PCR in Pathogen Detection: Recent Advances. Applied and Environmental Microbiology, 85(7), e00001-19. https://doi.org/10.1128/AEM.00001-19
Reekmans, R., Stevens, P., Vervust, T., & De Vos, P. (2009). An alternative real-time PCR method to detect the Bacillus cereus group in naturally contaminated food gelatine: a comparison study. Letters in applied microbiology, 48(1), 97–104. https://doi.org/10.1111/j.1472-765X.2008.02495.x
Smith, J. A., et al. (2020). Advances in PCR Detection Systems. Journal of Molecular Diagnostics, 22(4), 345-357. https://doi.org/10.1016/j.jmoldx.2020.01.005
Shin, Y. J., Chung, J. H., Kim, D. J., Ryu, H. M., Kim, M. Y., Han, J. Y., & Choi, J. S. (2016). Quantitative fluorescent polymerase chain reaction for rapid prenatal diagnosis of fetal aneuploidies in chorionic villus sampling in a single institution. Obstetrics & gynecology science, 59(6), 444–453. https://doi.org/10.5468/ogs.2016.59.6.444
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