All living things including animals, plants, bacteria, and viruses have genes (DNA or RNA) and DNA has a ladder-like, double helix structure with two chains of strands.Living things have their own specific genetic sequences, so detecting the sequence can identify the type of living organism.The high-sensitivity measurement of genes enables the identification of living things using a small piece of genetic material. PCR method is a technique of amplifying genes that makes possible to detect genes at a high sensitivity.
Principle of real-time PCR
The PCR method enables real-time measurement of the amplification of target DNA. From the measurement result, you can check the presence of the target DNA and perform quantitative determination for it.More specifically, as a sample is moved between high and low temperature ranges, a specific part of DNA amplifies, by x2, x4, and so on, exponentially (theoretically, it amplifies to approximately a trillion in 40 cycles).Because of this, DNA that is present only in a small amount at the beginning can be eventually measured.
Expected application range
Following applications could be possible by the identification of living things using a small piece of genetic material.
- Detection of bacteria even when a slight amount is mixed in food.
- Detection of bacteria even when a slight amount is adhered on cutting board.
- Investigation of traces of living things to know about the existence of a certain living thing
(ex. AYU(sweet fish) at river,existence of rare animal species)
- Identification of living things which cannot be determined by the outlook.
Usage at fields by downsizing of PCR equipment.
Conventional genetic testing equipment was only used in specialized facilities as it was large-sized, expensive, and testing took a long time.
NSG Group developed this compact device that provides shorter testing times while maintaining a high level of accuracy.This enables you to carry out high-sensitivity genetic testing anywhere.