The Basics of Dna Sequencing Technology

DNA sequencing is the process of determining the order of nucleotides in DNA. DNA sequencing is often talked about in the context of the Human Genome Project, in which, the human genome was successfully sequenced in 2001, providing scientists an incredible amount of data. The technology of DNA sequencing has evolved rapidly. To obtain your personal genome sequencing. This allows you to access your disease risk and to analyze and compare your genetic traits.

DNA molecules consist of repeating nucleotides, which are the the bases of DNA. Nucleotides consist of adenine (A), thymine (T), guanine (G), and cytosine (C). DNA molecules are double-stranded, with two complimentary DNA strands forming a double helix. DNA sequencing aims to determine the exact order of the bases, A, T, C and G in a DNA fragment.

The basic principle of DNA sequencing is simple and consists of two main steps. In the first step, labeled nucleotides are inserted into copies of a DNA fragment. In the second step, the DNA sequence is derived from the locations of the labeled nucleotides. The first step involves a technique called DNA amplification. First, the original double-stranded DNA is heated and separated into two single DNA strands.

Researchers had identified three genes that are connected to HNPCC: MLH1, MSH2 and MSH6. Under normal conditions, these genes actually help the body to resist cancers. On the other hand, mutations of these genes will make the body more susceptible to cancer, more specfically, colorectal and endometrial cancers.There has been a rapid expansion in the number of different and yet effective approaches for high-speed DNA sequencing.

State of DNA Sequencing Technology Projects

DNA Sequencing Technology-There has been a rapid expansion in the number of different and yet effective approaches for high-speed DNA sequencing. The variety of approaches in dna sequencing has significant differences in speed, accuracy and cost. Whole genome dna sequencing is revolutionizing research for Bio defense, Personalized Medicine, Microbial Forensics, Agricultural Research and Drug Discovery; high-speed sequencing will become the technology of choice for first responders.

Next Generation DNA Sequencing technologies are facilitating new approaches for drug discovery and development. Human genetics is the foundation of disease as well as the response to pharmaceutical agents. Today, promising drugs are abandoned due to the lack of significant efficacy in broad patient populations. Recently, blockbuster drugs have been removed from the market due to unexplained toxicity not revealed in clinical works.

The Human Genome Project was an initiative that promised to address some of the needs of the medical community in terms of a more detailed understanding of human genes and their roles in disease processes. The past half century has seen a dramatic increase in the understanding of genetics in disease. This increased understanding of dna sequencing has been spurred by the technological improvements in the study of DNA that began with the solving of the structure of DNA and the resolution of how genetic information is transmitted. The ability to determine the order of nucleotides in a fragment of DNA was pioneered by Sanger and it was the Sanger principle of dna sequencing via base extension that became the standard.

Human Genome Project was to change the face of biomedicine. This promise has been satisfied in many ways through the study of genomics and proteomics – new ways of studying biology that arose directly from the Human Genome Project. While we have a significantly better understanding of human genetics there is still much more to be done in the areas of improving diagnosis of disease, early detection of genetic predispositions to disease, rational drug design, improved drug target discovery and pharmacogenomics or custom drugs. The promise of DNA sequencing as a tool to understand disease, as well as other fundamental biological problems, established this need for new DNA sequencing technologies that could deliver more information, in a shorter time period, for less money.