title: Identification of the cyclin D1b mRNA variant in mouse.
abstract: Cyclin D1 plays a key regulatory role during the G1 phase of the cell cycle and its gene is amplified and over-expressed in many cancers. The cyclin D1b mRNA variant was established in human cells and recent functional analyses revealed that its protein product harbors unique activities in human cancer cells. By performing reverse transcription-polymerase chain reaction (RT-PCR) and rapid amplification of cDNA ends (RACE) experiments, we identified the cyclin D1b mRNA variant in mouse. Similar to its human counterpart, the mouse cyclin D1b transcript consists of exon 1, 2, 3, 4 and part of intron 4, and contains a long open reading frame (ORF). The predicted peptide from this ORF is 34-amino acid longer than the human cyclin D1b. The expression of this mouse mRNA variant was investigated. It appears to be expressed ubiquitously and differentially in various mouse cell lines and tissues and its level might be proportional to that of the canonical endogenous cyclin D1a mRNA.
authors.affiliation: Karmanos Cancer Institute, Wayne State University, Detroit, MI 48201, USA.
authors.forename: Jack
authors.initials: J
authors.lastname: Wu
authors.forename: Si-hung
authors.initials: SH
authors.lastname: Wu
authors.forename: Aliccia
authors.initials: A
authors.lastname: Bollig
authors.forename: Archana
authors.initials: A
authors.lastname: Thakur
authors.forename: D Joshua
authors.initials: DJ
authors.lastname: Liao
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D002460:Cell Line; D019938:Cyclin D1 / Q000737:chemistry / Q000235:genetics* / Q000378:metabolism; D005786:Gene Expression Regulation; D051379:Mice; D008969:Molecular Sequence Data; D020033:Protein Isoforms / Q000737:chemistry / Q000235:genetics / Q000378:metabolism; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction
chemical_list: D020033:Protein Isoforms; D012333:RNA, Messenger; D019938:Cyclin D1