title: Profiling conserved microRNA expression in recombinant CHO cell lines using Illumina sequencing.
abstract: MicroRNAs (miRNAs) are small, non-coding RNAs that regulate multiple aspects of cell physiology. The differential expression of conserved miRNAs in two Chinese hamster ovary (CHO) cell lines producing recombinant proteins was examined relative to the CHO-K1 cell line. A total of 190 conserved CHO miRNAs were identified through homology with known human and rodent miRNAs. More than 80% of these miRNAs showed differential expression in recombinant CHO cell lines. The small RNA sequencing data were analyzed in context of the CHO-K1 genome to examine miRNA organization and develop sequence-specific miRNA resources for CHO cells. The identification and characterization of CHO miRNAs will facilitate the use of miRNA tools in cell line engineering efforts to improve product yield and quality.
authors.affiliation: Department of Chemical Engineering, University of Delaware, Newark, Delaware, USA.
authors.forename: Stephanie
authors.initials: S
authors.lastname: Hammond
authors.forename: Jeffrey C
authors.initials: JC
authors.lastname: Swanberg
authors.forename: Shawn W
authors.initials: SW
authors.lastname: Polson
authors.forename: Kelvin H
authors.initials: KH
authors.lastname: Lee
mesh_terms: D000818:Animals; D016466:CHO Cells; D006224:Cricetinae; D003412:Cricetulus / Q000235:genetics*; D005786:Gene Expression Regulation; D035683:MicroRNAs / Q000096:biosynthesis* / Q000235:genetics; D011995:Recombination, Genetic; D017422:Sequence Analysis, DNA / Q000379:methods
chemical_list: D035683:MicroRNAs