ArticleCytotechnology2018
Genome sequence comparison between Chinese hamster ovary (CHO) DG44 cells and mouse using end sequences of CHO BAC clones based on BAC-FISH results.
Article in Cytotechnology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed, 5 citations in OpenAlex.
- Cell line development for continuous high cell density biomanufacturing: Exploiting hypoxia for improved productivity.Metabolic engineering communications · 2021Article
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2 authors at 1 institution in 1 country.
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Abstract
Chinese hamster ovary (CHO) cells have frequently been used in biotechnology as a mammalian host cell platform for expressing genes of interest. Previously, we constructed a detailed physical chromosomal map of the CHO DG44 cell line by fluorescence in situ hybridization (FISH) imaging using 303 bacterial artificial chromosome (BAC) clones as hybridization probes (BAC-FISH). BAC-FISH results revealed that the two longest chromosomes were completely paired. However, other chromosomes featured partial deletions or rearrangements. In this study, we determined the end sequences of 303 BAC clones (BAC end sequences), which were used for BAC-FISH probes. Among 606 BAC-end sequences (BESs) (forward and reverse ends), 558 could be determined. We performed a comparison between all determined BESs and mouse genome sequences using NCBI BLAST. Among these 558 BESs, 465 showed high homology to mouse chromosomal sequences. We analyzed the locations of these BACs in chromosomes of the CHO DG44 cell line using a physical chromosomal map. From the obtained results, we investigated the regional similarities among CHO chromosomes (A-T) and mouse chromosomes (1-19 and sex) about 217 BESs (46.7% of 465 high homologous BESs). Twenty-three specific narrow regions in 13 chromosomes of the CHO DG44 cell line showed high homology to mouse chromosomes, but most of other regions did not show significant correlations with the mouse genome. These results contribute to accurate alignments of chromosomes of Chinese hamster and its genome sequence, analysis of chromosomal instability in CHO cells, and the development of target locations for gene and/or genome editing techniques.
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