PMID- 26743516 OWN - NLM STAT- MEDLINE DCOM- 20170327 LR - 20181113 IS - 1432-0886 (Electronic) IS - 0009-5915 (Linking) VI - 125 IP - 4 DP - 2016 Sep TI - The cryptic Y-autosome translocation in the small Indian mongoose, Herpestes auropunctatus, revealed by molecular cytogenetic approaches. PG - 807-15 LID - 10.1007/s00412-015-0572-3 [doi] AB - In initial studies of the eutherian small Indian mongoose (Herpestes auropunctatus), the Y chromosome could not be identified in somatic cells. The male chromosome number is uniquely odd, 2n = 35, whereas that of females is 2n = 36. Previous reports indicated that this unique karyotype resulted from a translocation of the ancestral Y chromosome to an autosome. However, it has been difficult to identify the chromosomes that harbor the translocated Y chromosomal segment because it is an extremely small euchromatic region. Using a Southern blot analysis, we detected four conserved Y-linked genes, SRY, EIF2S3Y, KDM5D, and ZFY, in the male genome. We cloned homologues of these genes and determined their sequences, which showed high homology to genes in two carnivore species, cat and dog. To unambiguously identify the Y-bearing autosome, we performed immunostaining of pachytene spermatocytes using antibodies against SYCP3, gammaH2AX, and the centromere. We observed trivalent chromosomes, and the associations between the distal ends of the chromosomes were consistent with those of Y and X1 chromosomes. The centromere of the Y chromosome was located on the ancestral Y chromosomal segment. We mapped the complementary DNA (cDNA) clones of these genes to the male chromosomes using fluorescence in situ hybridization (FISH), and the linear localization of all genes was confirmed by two-colored FISH. These Y-linked genes were localized to the proximal region of the long arm of a single telomeric chromosome, and we successfully identified the chromosome harboring the ancestral Y chromosomal segment. FAU - Murata, Chie AU - Murata C AD - Department of Human Genetics, Institute of Biomedical Sciences, Tokushima University Graduate School, 3-18-15 Kuramoto-cho, Tokushima, 770-8503, Japan. FAU - Sawaya, Hirohito AU - Sawaya H AD - Graduate School of Life Science, Hokkaido University, North 10, West 8, Kita-ku, Sapporo, 060-0810, Japan. FAU - Nakata, Katsushi AU - Nakata K AD - Yambaru Wildlife Conservation Center, Ministry of the Environment, 263-1 Hiji, Kunigami-son, Kunigami-gun, Okinawa, 905-1413, Japan. FAU - Yamada, Fumio AU - Yamada F AD - Forestry and Forest Products Research Institute, Matsunosato 1, Tsukuba, Ibaraki, 305-8687, Japan. FAU - Imoto, Issei AU - Imoto I AD - Department of Human Genetics, Institute of Biomedical Sciences, Tokushima University Graduate School, 3-18-15 Kuramoto-cho, Tokushima, 770-8503, Japan. FAU - Kuroiwa, Asato AU - Kuroiwa A AD - Laboratory of Animal Cytogenetics, Faculty of Science, Hokkaido University, Kita 10 Nishi 8, Kita-ku, Sapporo, Hokkaido, 060-0810, Japan. asatok@sci.hokudai.ac.jp. LA - eng PT - Journal Article DEP - 20160107 PL - Austria TA - Chromosoma JT - Chromosoma JID - 2985138R RN - 0 (Genetic Markers) RN - 0 (Kruppel-Like Transcription Factors) RN - 0 (Sex-Determining Region Y Protein) RN - 0 (Transcription Factors) RN - EC 1.14.11.- (Histone Demethylases) SB - IM MH - Animals MH - Base Sequence MH - Cats MH - Cells, Cultured MH - Centromere/physiology MH - Cloning, Molecular MH - Dogs MH - Genes, Y-Linked/*genetics MH - Genetic Markers/*genetics MH - Herpestidae/*genetics MH - Histone Demethylases/genetics MH - In Situ Hybridization, Fluorescence/*veterinary MH - *Karyotype MH - Kruppel-Like Transcription Factors/genetics MH - Male MH - Sequence Analysis, DNA MH - Sex-Determining Region Y Protein/genetics MH - Transcription Factors/genetics MH - Translocation, Genetic MH - Y Chromosome/*genetics OTO - NOTNLM OT - Chromosome evolution OT - Fluorescence in situ hybridization OT - Meiosis OT - Y chromosome EDAT- 2016/01/09 06:00 MHDA- 2017/03/28 06:00 CRDT- 2016/01/09 06:00 PHST- 2015/07/05 00:00 [received] PHST- 2015/12/28 00:00 [accepted] PHST- 2015/12/16 00:00 [revised] PHST- 2016/01/09 06:00 [entrez] PHST- 2016/01/09 06:00 [pubmed] PHST- 2017/03/28 06:00 [medline] AID - 10.1007/s00412-015-0572-3 [pii] AID - 10.1007/s00412-015-0572-3 [doi] PST - ppublish SO - Chromosoma. 2016 Sep;125(4):807-15. doi: 10.1007/s00412-015-0572-3. Epub 2016 Jan 7.