1. Molecular Cloning and Characterization of WNT3A and WNT14 Clustered in Human Chromosome 1q42 Region
- Author
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Tetsuroh Saitoh, Momoki Hirai, and Masaru Katoh
- Subjects
DNA, Complementary ,animal structures ,Molecular Sequence Data ,Biophysics ,HL-60 Cells ,Biochemistry ,Wnt3 Protein ,Wnt3A Protein ,Gene duplication ,Gene cluster ,medicine ,Humans ,Amino Acid Sequence ,Cloning, Molecular ,Molecular Biology ,Gene ,Genetics ,WNT Family Protein ,Sequence Homology, Amino Acid ,medicine.diagnostic_test ,biology ,Mouse mammary tumor virus ,Wnt signaling pathway ,Chromosome Mapping ,Proteins ,Chromosome ,Cell Biology ,biology.organism_classification ,Molecular biology ,Wnt Proteins ,Chromosomes, Human, Pair 1 ,Karyotyping ,Multigene Family ,embryonic structures ,K562 Cells ,HeLa Cells ,Fluorescence in situ hybridization - Abstract
Human WNT3A and WNT14 cDNAs were cloned and characterized. WNT3A and WNT14 encoded WNT family protein of 352 and 365 amino acids, respectively. The 3.0-kb WNT3A mRNA was moderately expressed in placenta, and the 4.4-kb WNT14 mRNA was moderately expressed in skeletal muscle and heart. Although WNT3A mRNA was not detected in 35 human cancer cell lines, WNT14 mRNA was expressed in gastric cancer cell lines TMK1, MKN7, MKN45 and KATO-III. WNT3A and WNT14 genes, clustered in the head to head manner with an interval of about 58.0 kb, were mapped to human chromosome 1q42 region by fluorescence in situ hybridization. WNT3 and WNT15, clustered in human chromosome 17q21 region, are related genes of WNT3A and WNT14, respectively. WNT3A-WNT14 gene cluster and WNT3-WNT15 gene cluster might be generated due to duplication of ancestral gene cluster, just like WNT10A-WNT6 gene cluster and WNT10B-WNT1 gene cluster. Integration sites of mouse mammary tumor virus (MMTV) are located in the mouse chromosomal regions corresponding to these human WNT gene clusters. These results strongly suggest that unidentified nucleotide motif responsible for susceptibility to recombination might exist within the intergenic regions of these WNT gene clusters.
- Published
- 2001
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