Method of identification and cloning differentially expressed me

Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving nucleic acid

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435 912, 435 9151, 536 242, 536 2433, C12Q 168, C12P 1934, C07H 2102, C07H 2104

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061209961

ABSTRACT:
A method of identification of differentially expressed messenger RNA (mRNA) which consists of synthesizing from a set of sequences of mRNA sets of fragments of complementary DNA (cDNA), which are separated with the aid of gel electrophoresis and the pictures of separation of the cDNA from different types of cells are compared and fragments with differential signal intensity are identified. For formation of the set of fragments the cDNA is cleaved with the aid of restriction nucleases. A method of cloning of differentially expressed mRNAs consists of synthesizing from sets of sequences of mRNAs from different types of cells sets of fragments of complementary DNA (cDNA) which are separated with the aid of gel electrophoresis, the pictures of the separation of the cDNA from different types of cells are compared, fragments of cDNA with different signal intensities are separated from the gel, amplified with the aid of a polymerase chain reaction and cloned to a plasmid or phage vector. For the formation of the set of fragments one carries out cleavage of the cDNA with the aid of restriction endonucleases and uses only those fragments of cDNA that correspond to the 3' or 5' end regions of the mRNAs.

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