Borodin A, Kopatnzev E, Wagner L, Volik S, Ermolaeva O, Lebedev Y, Monastyrskaya G, Kunz J, Grzeschik KH, Sverdlov E. An arrayed library enriched in hncDNA corresponding to transcribed sequences of human chromosome 19: preparation and analysis.
GENETIC ANALYSIS : BIOMOLECULAR ENGINEERING 1995;
12:23-31. [PMID:
7648467 DOI:
10.1016/1050-3862(95)00106-9]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A simple technique for preparation of libraries of the human chromosome specific transcribed sequences is developed. It uses hnRNA from human-rodent hybrid cell lines containing particular human chromosomes or their fragments and includes three stages: (i) reverse transcription of the hnRNA with Alu-specific primers directing the transcription beyond the Alu-repeats to flanking non-repetitive sequences of the chromosome; (ii) nested primer PCR strategy with specifically designed primers; (iii) direct selective cloning of the second-stage nested primer PCR products. An arrayed hncDNA library was prepared from a hybrid cell line containing chromosome 19 and fragments of 22 and X chromosomes. The library contains around 98% of human-specific transcribed sequences. Sequences of 52 human-specific, according to PCR analysis, clones differed from each other and had no close analogs in the EMBL Data Bank. Of 17 clones assigned to certain human chromosomes, 9 belonged to chromosome 19, 5 to chromosome 22 and 3 to chromosome X. Some of the human specific clones contained repetitive elements scattered over different human chromosomes. Clones from hncDNA libraries are useful as STSs/ESTs, as probes for detecting full-size genes in genomic libraries, for RFLP analysis and for identification of chromosome specific cDNAs.
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