CRISPR gene cuts may offer new way to chart human genome
Author Name: Keith Howell
Category Name: Genetics and molecular Biology
Description: CRISPR gene cuts may offer new way to chart human genome.
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In search of new ways to sequence human genomes and read critical alterations in DNA, researchers say they have successfully used the gene cutting tool CRISPR to make cuts in DNA around lengthy tumour genes, which can be used to collect sequence information.
The researchers say that pairing CRISPR with tools that sequence the DNA components of human cancer tissue is a technique that could, one day, enable fast, relatively cheap sequencing of patients' tumours, streamlining the selection and use of treatments that target highly specific and personal genetic alterations.
For tumour sequencing in cancer patients, you don't necessarily need to sequence the whole cancer genome," says researcher. "Deep sequencing of particular areas of genetic interest can be very informative. In conventional genome sequencing, scientists have to make many copies of the DNA at issue, randomly break the DNA into segments, and feed the broken segments through a computerized machine that reads the string of chemical compounds called nucleic acids, made up of the four "bases" that form DNA, and are lettered A, C, G and T. Then, scientists look for overlapping regions of the broken segments and fit them together like tiles on a roof to form long regions of DNA that make up a gene.
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