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Dell'Angelica EC, Schleicher CH, Simpson RJ, Santome JA. Complex assembly of calgranulins A and B, two S100-like calcium-binding proteins from pig granulocytes. Int J Biochem Cell Biol 1996; 28:53-62. [PMID: 8624844 DOI: 10.1016/1357-2725(95)00115-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Calgranulin A (CAGA) and calgranulin B (CAGB) are two S100-like calcium-binding proteins that in human, bovine and mouse granulocytes are associated into a heterocomplex. We have previously identified in pig granulocytes the porcine homologue of CAGA and a novel S100-like protein which was named calgranulin C (CAGC). As pig CAGA is not associated with CAGC, we herein investigate its possible association with other proteins. CAGA was purified from pig granulocytes by gel filtration followed by Mono Q chromatography. The purified fractions were analysed by SDS-polyacrylamide gel electrophoresis, isoelectric focusing, mass spectrometry, chemical cross-linking and hydrophobic interaction chromatography. The CAGA-associated protein was further characterized by amino acid sequencing. Two CAGA-containing fractions were isolated. One of them was identified as a CAGA homodimer. The other fraction consists of a heterocomplex containing CAGA and a pI 7.0 calcium-binding protein; this protein has a molecular mass of 15,877.9 +/- 3.8 Da (mean +/- SD) whereas it migrates on 10 and 16% polyacrylamide gels as a 24- and 20-kDa protein, respectively. The pI 7.0 protein was identified by internal amino acid sequencing as the porcine homologue of CAGB. The stoichiometry of the heterocomplex was estimated to be 1:1. Both the CAGA homodimer and CAGA/CAGB were found to be non-covalently associated. Unlike the homodimer, CAGA/CAGB was bound to a Phenyl Superose column in a calcium-dependent manner. Our results suggest that pig granulocytes contain, in addition to CAGC, a CAGA homodimer and a CAGA/CAGB heterodimer. It is proposed that CAGB/CAGB and the CAGA homodimer may play different roles in vivo.
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Affiliation(s)
- E C Dell'Angelica
- Instituto de Quimica y Fisicoquímica Biológicas, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Argentina
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2
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Iqbal AM, Akhtar M, Ali MA. Cytogenetic characterization of sarcomas of bone and soft tissues. Ann Saudi Med 1995; 15:622-7. [PMID: 17589024 DOI: 10.5144/0256-4947.1995.622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Specific chromosome rearrangements in different types of solid tumors have been described recently in a number of studies. However, the frequency and diagnostic importance of these chromosome rearrangements are currently under intensive investigation. The objective of this study is to provide a preliminary report on the types of clonal chromosome abnormalities observed in sarcomas of bone and soft tissues. Included in this report are osteosarcoma (five), synovial sarcoma (three), Ewing sarcoma (two), leiomyosarcoma (one), and spindle cell sarcoma (one). Cytogenetic analysis revealed clonal chromosome rearrangements in all of the tumors studied. Our findings correlated well with previously reported cytogenetic data on various types of solid tumors.
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Affiliation(s)
- A M Iqbal
- Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
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Affiliation(s)
- S A Porcelli
- Department of Rheumatology and Immunology, Brigham and Women's Hospital, Boston, Massachusetts 02115, USA
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4
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Primary structure and binding properties of calgranulin C, a novel S100-like calcium-binding protein from pig granulocytes. J Biol Chem 1994. [DOI: 10.1016/s0021-9258(19)61996-4] [Citation(s) in RCA: 97] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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5
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Iozzo RV, Cohen IR, Grässel S, Murdoch AD. The biology of perlecan: the multifaceted heparan sulphate proteoglycan of basement membranes and pericellular matrices. Biochem J 1994; 302 ( Pt 3):625-39. [PMID: 7945186 PMCID: PMC1137278 DOI: 10.1042/bj3020625] [Citation(s) in RCA: 309] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- R V Iozzo
- Department of Pathology and Cell Biology, Thomas Jefferson University, Philadelphia, PA 19107
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6
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Ridgwell K, Eyers S, Mawby W, Anstee D, Tanner M. Studies on the glycoprotein associated with Rh (rhesus) blood group antigen expression in the human red blood cell membrane. J Biol Chem 1994. [DOI: 10.1016/s0021-9258(17)37387-8] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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7
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Polans A, Palczewski K, Asson-Batres M, Ohguro H, Witkowska D, Haley T, Baizer L, Crabb J. Purification and primary structure of Capl, an S-100-related calcium-binding protein isolated from bovine retina. J Biol Chem 1994. [DOI: 10.1016/s0021-9258(17)37592-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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8
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Anstee DJ, Tanner MJ. Biochemical aspects of the blood group Rh (rhesus) antigens. BAILLIERE'S CLINICAL HAEMATOLOGY 1993; 6:401-22. [PMID: 8043932 DOI: 10.1016/s0950-3536(05)80152-0] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Despite their importance in clinical haematology, the details of the structures and possible functions of the proteins associated with Rh antigen expression have only recently begun to emerge. The antigens are carried by a multimeric complex between a M(r) 30,000 polypeptide which is not glycosylated (the Rh30 polypeptide), and a heavily glycosylated glycoprotein (the Rh50 glycoprotein). The N-terminal amino acid sequences of the two types of proteins were determined and used to isolated cDNA clones. The Rh30 and Rh50 proteins are both very hydrophobic membrane proteins, each containing up to 12 membrane spans. The two proteins are homologous in sequence and clearly belong to the same family. They are erythroid-specific and not related to any other known family of proteins. The Rh30 polypeptides are the genetic determinants of Rh blood group antigen activity. One polypeptide (Rh30A) is probably associated with CcEe antigen activity, while another (Rh30B) is responsible for the D antigen. The proteins have structures typical of transporters but their functions are still unclear. A number of other red cell membrane proteins (LW, CD47, glycophorin B and Fy) show alterations in red cells lacking Rh antigens (Rhnull). These proteins may have a role in the biosynthesis or function of the Rh30 and Rh50 proteins.
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Affiliation(s)
- D J Anstee
- International Blood Group Reference Laboratory, Bristol, UK
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9
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Saranath D, Bhoite LT, Deo MG. Molecular lesions in human oral cancer: the Indian scene. EUROPEAN JOURNAL OF CANCER. PART B, ORAL ONCOLOGY 1993; 29B:107-12. [PMID: 7910088 DOI: 10.1016/0964-1955(93)90031-9] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Carcinogenesis is a multi-step process including aberrant expression of two interacting classes of genes--oncogenes and tumour suppressor genes. With recent technological advances, it is feasible to identify the various molecular lesions underlying the different stages of neoplasia. Squamous cell carcinomas of the head and neck, although representing 2-4% of the malignancies in the West, comprise a large fraction (40%) of total cancers in India, posing a major health problem. Further, epidemiological and experimental evidence unequivocally confirms a causal association between tobacco chewing habit, highly prevalent in India, and oral cancers. Thus, the oral cancers offer an excellent in vivo system for the study of the environmental tobacco-carcinogen induced molecular alterations in the malignancy, and associated premalignant lesions such as leukoplakia. With a view to elucidating the molecular lesions involving oncogenes in oral carcinogenesis, we have investigated myc/ras/EGF-R activation by amplification, point mutation, gene rearrangement and allelic losses. Further, a functionally activated potent transforming gene was detected in a NIH3T3 transfection/tumorigenicity assay, unrelated to myc/ras/EGF-R. Studies on the involvement of p53 gene in oral cancer, indicates p53 allelic loss as an event observed in leukoplakia and tumour tissues. Advanced oral cancer stages demonstrate cumulative molecular aberrations, with greater than 95% samples showing oncogene involvement, thus indicating a multi-step process of oral carcinogenesis. The review presents a comparative picture of the oral malignancies seen in Western countries and India, significance of molecular lesions and future perspectives of oncogenes and tumour suppressor gene involvement in oral cancer.
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Affiliation(s)
- D Saranath
- Cell and Developmental Pathology Division, Cancer Research Institute, Bombay, India
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Abstract
BACKGROUND Diagnostic and consistent chromosomal abnormalities have been reported in several soft tissue sarcomas, but few studies have reported the frequency of chromosomal abnormalities in uterine sarcomas. METHODS Cytogenetic studies were performed on specimens of uterine sarcoma from 14 patients. The specimens included five of leiomyosarcoma (LMS), four of endometrial stroma sarcoma (ESS), and five of malignant mixed mesodermal tumor (MMMT). RESULTS Chromosomal abnormalities were detected in 10 of 14 (71%) patients. Chromosome 1 was involved in 7 of 13 (54%) of the patients, chromosome 11 in 6 of 13 (46%), and chromosome 7 in 6 of 13 (46%). A site-specific chromosomal abnormality, del(11)(q22) was found in two patients with LMS and three patients with MMMT, and 7q31 also was involved frequently. Marked genomic instability characterized the MMMT studied. CONCLUSIONS These findings suggest that abnormalities of chromosomes 1, 7, and 11 may play a role in tumor initiation or progression in uterine sarcomas. Genomic alterations in the region 11q22 may be specific for malignant smooth muscle tumors of the uterus.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Chromosome Aberrations/genetics
- Chromosome Disorders
- Chromosomes, Human, Pair 1
- Chromosomes, Human, Pair 11
- Chromosomes, Human, Pair 6
- Chromosomes, Human, Pair 7
- Cytogenetics
- Endometrial Neoplasms/genetics
- Female
- Humans
- Karyotyping
- Leiomyosarcoma/genetics
- Metaphase
- Middle Aged
- Neoplasm Recurrence, Local/genetics
- Neoplasms, Germ Cell and Embryonal/genetics
- Sarcoma/genetics
- Uterine Neoplasms/genetics
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Affiliation(s)
- R Laxman
- Johns Hopkins Medical Institutions, Department of Oncology, Baltimore, Maryland
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Krajci P, Gedde-Dahl T, Høyheim B, Rogde S, Olaisen B, Brandtzaeg P. The gene encoding human transmembrane secretory component (locus PIGR) is linked to D1S58 on chromosome 1. Hum Genet 1992; 90:215-9. [PMID: 1487233 DOI: 10.1007/bf00220065] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The human transmembrane secretory component (SC or poly-Ig receptor, PIGR) is expressed basolaterally on glandular epithelial cells and is responsible for the external translocation of polymeric IgA and IgM. SC is hence a key molecule in antibody protection of mucosal surfaces. The human SC gene (locus PIGR) is located on chromosome 1 (1q31-q41). Here we present the first genetic linkage study of PIGR versus syntenic markers, including D1S58 and F13B, which have been previously regionalized to 1q31-q32 and 1q31-q32.1, respectively. We found that PIGR is closely linked to D1S58 (lods + 5.06 at theta max = 0.06, without sex difference). PIGR versus F13B showed + 1.46 at theta max = 0.25 for both sexes combined. A recombination of 0.06 between F13B and D1S58 (lods + 2.24) was in contrast to a previously published study giving theta max = 0.22 (lods + 3.9), the combined lods being 5.6 at theta max = 0.20. The progeny of a triply heterozygotic female indicated that PIGR is the flanking locus, therefore suggesting a cen-F13B-D1S58-PIGR-qter gene sequence on human chromosome 1. Only negative lod scores to RH, C8@, and PGM1 on 1p, and FY on proximal 1q, were found. Current combined Norwegian allele frequencies were estimated for PIGR to be A1 = 0.63, A2 = 0.37 (370 chromosomes), and for D1S58 to be A1 = 0.44, A2 = 0.56 (218 chromosomes).
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Affiliation(s)
- P Krajci
- Laboratory for Immunohistochemistry and Immunopathology (LIIPAT), University of Oslo, National Hospital, Norway
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12
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Krajci P, Kvale D, Taskén K, Brandtzaeg P. Molecular cloning and exon-intron mapping of the gene encoding human transmembrane secretory component (the poly-Ig receptor). Eur J Immunol 1992; 22:2309-15. [PMID: 1355431 DOI: 10.1002/eji.1830220920] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Secretory component (SC or the poly-Ig receptor) plays a crucial role in mucosal immunity by translocating polymeric IgA and IgM through secretory epithelial cells into external body fluids. Labeled restriction fragments from human SC cDNA were used to screen a human genomic leukocyte library. Three overlapping clones, spanning a total of 19 kb of the human SC gene, including 3 kb of the 5' flanking region, were characterized. The putative TATA box candidate, preceded by a CAAT-like box, was found 329 nucleotides upstream of the first exon. Altogether 11 exons covering the entire coding region were identified. The exon size ranged from 59 to 657 nucleotides and exon-intron junctions followed known consensus sequences. Three of the five extracellular Ig-related domains (D1, D4 and D5) were confined to one exon each (E3, E5 and E6), whereas D2 and D3 were encoded by the same exon (E4). The latter exon corresponds to that involved in alternate splicing of rabbit SC. The membrane-spanning segment was confined to part of one exon (E8). The cytoplasmic tail was encoded by four exons (E8-E11), whose boundaries encompassed fairly well the structural determinants proposed to be responsible for intracellular sorting of SC in the rabbit. The polymorphic restriction site reported earlier for Pvu II was localized to the third intron.
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Affiliation(s)
- P Krajci
- Laboratory for Immunohistochemistry and Immunopathology (LIIPAT), Oslo, Norway
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13
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Ridgwell K, Spurr NK, Laguda B, MacGeoch C, Avent ND, Tanner MJ. Isolation of cDNA clones for a 50 kDa glycoprotein of the human erythrocyte membrane associated with Rh (rhesus) blood-group antigen expression. Biochem J 1992; 287 ( Pt 1):223-8. [PMID: 1417776 PMCID: PMC1133147 DOI: 10.1042/bj2870223] [Citation(s) in RCA: 101] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The Rh blood-group antigens are associated with human erythrocyte membrane proteins of approx. 30 kDa (the Rh30 polypeptides). Heterogeneously glycosylated membrane proteins of 50 and 45 kDa (the Rh50 glycoproteins) are coprecipitated with the Rh30 polypeptides on immunoprecipitation with anti-Rh-specific mono- and poly-clonal antibodies. We have isolated cDNA clones representing a member of the Rh50 glycoprotein family (the Rh50A glycoprotein). We used PCR with degenerate primers based on the N-terminal amino acid sequence of the Rh50 glycoproteins and human genomic DNA as a template and cloned and sequenced three types of PCR product of the expected size. Two of these products, Rh50A and Rh50B, gave the same translated amino acid sequence which corresponded to the expected Rh50 glycoprotein sequence but had only 75% DNA sequence similarity. The third product (Rh50C) contained a single base deletion, and the translated amino acid sequence contained an in-frame stop codon. We have isolated cDNA clones containing the full coding sequence of the Rh50A glycoprotein. This sequence predicts that it is a 409-amino acid N-glycosylated membrane protein with up to 12 transmembrane domains. The Rh50A glycoprotein shows clear similarity to the Rh30A protein in both amino acid sequence and predicted topology. Our results are consistent with the Rh30 and Rh50 groups of proteins being different subunits of an oligomeric complex which is likely to have a transport or channel function in the erythrocyte membrane. We mapped the Rh50A gene to human chromosome 6p21-qter, showing that genetic differences in the Rh30 rather than the Rh50 genes specify the major polymorphic forms of the Rh antigens.
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Affiliation(s)
- K Ridgwell
- Department of Biochemistry, School of Medical Sciences, University of Bristol, U.K
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14
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Watson ML, D'Eustachio P, Mock BA, Steinberg AD, Morse HC, Oakey RJ, Howard TA, Rochelle JM, Seldin MF. A linkage map of mouse chromosome 1 using an interspecific cross segregating for the gld autoimmunity mutation. Mamm Genome 1992; 2:158-71. [PMID: 1543910 DOI: 10.1007/bf00302874] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
An interspecific backcross was used to define a high resolution linkage map of mouse Chromosome (Chr) 1 and to analyze the segregation of the generalized lymphoproliferative disease (gld) mutation. Mice homozygous for gld have multiple features of autoimmune disease. Analysis of up to 428 progeny from the backcross [(C3H/HeJ-gld x Mus spretus)F1 x C3H/HeJ-gld] established a map that spans 77.6 cM and includes 56 markers distributed over 34 ordered genetic loci. The gld mutation was mapped to a less than 1 cM segment on distal mouse Chr 1 using 357 gld phenotype-positive backcross mice. A second backcross, between the laboratory strains C57BL/6J and SWR/J, was examined to compare recombination frequency between selected markers on mouse Chr 1. Significant differences in crossover frequency were demonstrated between the interspecific backcross and the inbred laboratory cross for the entire interval studied. Sex difference in meiotic crossover frequency was also significant in the laboratory mouse cross. Two linkage groups known to be conserved between segments of mouse Chr 1 and the long arm of human Chrs 1 and 2 where further defined and a new conserved linkage group was identified that includes markers of distal mouse Chr 1 and human Chr 1, bands q32 to q42.
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Affiliation(s)
- M L Watson
- Department of Medicine, Duke University, Durham, North Carolina 27710
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15
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Localization of the C termini of the Rh (rhesus) polypeptides to the cytoplasmic face of the human erythrocyte membrane. J Biol Chem 1992. [DOI: 10.1016/s0021-9258(18)42156-4] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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16
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Satterthwaite AB, Burn TC, Le Beau MM, Tenen DG. Structure of the gene encoding CD34, a human hematopoietic stem cell antigen. Genomics 1992; 12:788-94. [PMID: 1374051 DOI: 10.1016/0888-7543(92)90310-o] [Citation(s) in RCA: 70] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
CD34 is a cell surface antigen of unknown function expressed in humans in hematopoietic stem cells, vascular endothelium, and blasts from 30% of patients with acute myeloid and lymphocytic leukemia. To begin to investigate the cis-acting elements required for this tissue-specific expression, the human CD34 locus was isolated and its genomic structure and transcriptional start site were characterized. The human CD34 gene spans 26 kb and has 8 exons, a structure quite similar to that of the murine gene. The start site of CD34 transcription was determined to be 258 bp upstream of the translational start site using RNase protection. These experiments also indicated that the 5' untranslated region has extensive secondary structure. In addition, fluorescence in situ hybridization was used to map the CD34 locus to band 1q32.
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Affiliation(s)
- A B Satterthwaite
- Hematology/Oncology Division, Beth Israel Hospital, Harvard Medical School, Boston, Massachusetts 02215
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17
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Oakey RJ, Howard TA, Hogarth PM, Tani K, Seldin MF. Chromosomal mapping of the high affinity Fc? receptor gene. Immunogenetics 1992; 35:279-82. [PMID: 1347284 DOI: 10.1007/bf00166834] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- R J Oakey
- Department of Medicine, Duke University Medical Center, Durham, NC 27710
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18
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Dower NA, Seldin MF, Pugh S, Stone JC. Organization and chromosomal locations of Rap1a/Krev sequences in the mouse. Mamm Genome 1992; 3:162-7. [PMID: 1617222 DOI: 10.1007/bf00352461] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The human RAP1A gene encodes a protein that apparently can antagonize the function of oncogenic ras genes in gene transfer experiments, but its normal function is unknown. To understand the function of this gene, we have undertaken a study of the mouse homolog, Rap1a. The complete coding sequence of a mouse Rap1a cDNA has been determined, and genomic clones representing three distinct Rap1a species were recovered. We find that Rap1a is located on distal mouse Chromosome (Chr) 3 near Nras, Ampd-1, Tshb, Ngfb, and Atp1a1. Two related sequences (Rap1a-rs1 and Rap1a-rs2) were also characterized. Rap1a-rs1, which was not localized, has a sequence very similar to the Rap1a cDNA, suggesting that it has been recently acquired by the mouse genome. Rap1a-rs2 is more distantly related to the gene sequence and is located on Chr 2 near Actc-1.
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Affiliation(s)
- N A Dower
- Department of Paediatrics, University of Alberta, Edmonton, Canada
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19
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Hentati A, Lamy C, Melki J, Zuber M, Munnich A, de Recondo J. Clinical and genetic heterogeneity of Charcot-Marie-Tooth disease. Genomics 1992; 12:155-7. [PMID: 1733853 DOI: 10.1016/0888-7543(92)90419-s] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The autosomal dominant forms of hereditary motor and sensory neuropathies include the hypertrophic form (CMT1) and the neuronal form of Charcot-Marie-Tooth disease (CMT2). While at least two distinct loci have been shown to be linked to the CMT1 phenotype (CMT1A and CMT1B, on chromosomes 17 and 1, respectively), whether the CMT2 phenotype results from mutations allelic to either of the CMT1 genes remains unknown. Studying one CMT1 and two CMT2 pedigrees, we were able to exclude the CMT2 disease locus from the region of chromosome 17 (Z = -2.80 at theta = 0.05 for D17S58) where the CMT1A gene maps (Z = +3.67 at theta = 0.00). Similarly, negative lod score values were obtained in CMT2 for the region of chromosome 1 where the CMT1B gene has been located (Z = -3.09 at theta = 0.05 for D1S61). The present study therefore provides evidence for genetic heterogeneity between the hypertrophic and the neuronal forms of Charcot-Marie-Tooth disease and demonstrates that the CMT2 gene is not allelic to either of the CMT1 genes mapped to date.
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Affiliation(s)
- A Hentati
- Unité de Recherches sur les Handicaps Génétiques de l'Enfant INSERM U-12, Hôpital des Enfants-Malades, Paris, France
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20
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Whitehouse DB, Putt W, Lovegrove JU, Morrison K, Hollyoake M, Fox MF, Hopkinson DA, Edwards YH. Phosphoglucomutase 1: complete human and rabbit mRNA sequences and direct mapping of this highly polymorphic marker on human chromosome 1. Proc Natl Acad Sci U S A 1992; 89:411-5. [PMID: 1530890 PMCID: PMC48247 DOI: 10.1073/pnas.89.1.411] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
A cDNA clone encoding the mRNA for the highly polymorphic human enzyme phosphoglucomutase 1 (PGM1; EC 5.4.2.2) has been isolated and characterized. This was achieved indirectly by first isolating a rabbit cDNA from an expression library using anti-rabbit PGM antibodies. A comparison of the nucleotide sequences shows that the homologies between human and rabbit PGM1 mRNAs are 92% and 97% for the coding nucleotide sequence and the amino acid sequence, respectively. The derived rabbit amino acid sequence is in complete agreement with the published protein sequence for rabbit muscle PGM. A physical localization of the human PGM1 gene to chromosome 1p31 has been determined by in situ hybridization. Analysis of DNA from a wide variety of vertebrates indicates a high level of PGM1 sequence conservation during evolution.
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Affiliation(s)
- D B Whitehouse
- Medical Research Council Human Biochemical Genetics Unit, Galton Laboratory, University College London, United Kingdom
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21
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22
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Agre P, Cartron JP. Biochemistry and molecular genetics of Rh antigens. BAILLIERE'S CLINICAL HAEMATOLOGY 1991; 4:793-819. [PMID: 1790354 DOI: 10.1016/s0950-3536(06)80031-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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23
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Abstract
In the current study of the prognosis of all patients (N equals 70) with squamous cell carcinomas (SCC) of floor of mouth in Norway during the period 1963 to 1972, the authors found that patients with Rhesus (Rh) (D)-negative blood group had significantly poorer prognosis (mean 5-year survival, 8%) than patients with Rh (D)-positive blood group (5-year survival, 30%) (P equals 0.04). This extends the authors' previous observations in another group of oral cancer patients. The authors do not know the explanation for this association. However, the Rh gene locus is located on the short arm of chromosome 1 which reportedly has shown rearrangements in some head and neck SCC and other human neoplasms. The authors therefore speculate that the Rh gene locus may be linked with chromosome 1 changes of importance for the progression of oral SCC.
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Affiliation(s)
- M Bryne
- Department of Oral Pathology, Dental Faculty, University of Oslo, Norway
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24
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Takahashi E, Yamauchi M, Tsuji H, Hitomi A, Meuth M, Hori T. Chromosome mapping of the human cytidine-5'-triphosphate synthetase (CTPS) gene to band 1p34.1-p34.3 by fluorescence in situ hybridization. Hum Genet 1991; 88:119-21. [PMID: 1959918 DOI: 10.1007/bf00204942] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The human cytidine-5'-triphosphate synthetase (CTPS) gene was mapped by a direct mapping system combined with fluorescence in situ hybridization and replicated prometaphase R-bands. By high-resolution banding analysis, the signals were localized to band 34.1-34.3 of the short arm of chromosome 1; 1p34.1-p34.3. Simple procedures for the detection of R-bands are described.
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Affiliation(s)
- E Takahashi
- Division of Genetics, National Institute of Radiological Sciences, Chiba, Japan
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25
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Krajci P, Grzeschik KH, Geurts van Kessel AH, Olaisen B, Brandtzaeg P. The human transmembrane secretory component (poly-Ig receptor): molecular cloning, restriction fragment length polymorphism and chromosomal sublocalization. Hum Genet 1991; 87:642-8. [PMID: 1682231 DOI: 10.1007/bf00201717] [Citation(s) in RCA: 62] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The human transmembrane secretory component (SC) mediates glandular translocation of polymeric IgA and IgM into exocrine secretions. A 2898-bp cDNA clone, encoding the entire sequence of the human transmembrane SC, was isolated from a colonic adenocarcinoma cell line cDNA library. The deduced amino-acid sequence had a length of 764 residues and showed an overall similarity of 56% and 64% with the rabbit and rat counterpart, respectively. A restriction fragment length polymorphism (RFLP) was found with PvuII, revealing a two-alle RFLP with an autosomal codominant inheritance pattern and allele frequencies of 0.65 and 0.35. Southern blot analysis of human-rodent somatic hybrid panels, including hybrids with translocation chromosomes carrying different parts of chromosome 1, assigned the SC gene to 1q31-q42, thus confirming a previously reported provisional assignment.
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Affiliation(s)
- P Krajci
- Laboratory for Immunohistochemistry and Immunopathology (LIIPAT), University of Oslo, National Hospital, Norway
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26
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Bryne M. Prognostic value of various molecular and cellular features in oral squamous cell carcinomas: a review. J Oral Pathol Med 1991; 20:413-20. [PMID: 1804985 DOI: 10.1111/j.1600-0714.1991.tb00430.x] [Citation(s) in RCA: 61] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Recent findings of prognostic value for oral squamous cell carcinomas (OSCCs) which may supplement clinical staging are reviewed. Many reports show that histopathologic grading, measurements of tumor-thickness and DNA-content have independent prognostic value and may thus be of clinical value. Features regarding cells at the invading margins of the tumors are probably of higher prognostic value than features within other parts of the tumors. Reportedly, various other cellular and serum markers have prognostic associations worthwhile further research.
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Affiliation(s)
- M Bryne
- Department of Oral Pathology, University of Oslo, Norway
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27
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Murayama K, Greenwood RS, Rao KW, Aylsworth AS. Neurological aspects of del(1q) syndrome. AMERICAN JOURNAL OF MEDICAL GENETICS 1991; 40:488-92. [PMID: 1746617 DOI: 10.1002/ajmg.1320400424] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We have studied three children with de novo terminal deletion of the long arm of chromosome 1 (46,XX,del(1)(q43)). They all have minor anomalies and neurological signs (severe psychomotor developmental delay, generalized hypotonia, and seizures) that have been described previously. In addition, all of these three patients have autistic-like behavior. They avoid eye contact, show no interest in people, express little emotion, and repeat stereotypic movements such as head nodding and purposeless finger manipulation. They also spend excessive time in making unusual sounds consisting of a high-pitched shrill cry with little intonation in infancy and a harsh, strained, and glottal stridency in later life. They make no labial, lingual, or nasal sounds. We suggest that these observations may be unique clinical manifestations of certain terminal 1q deletions.
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Affiliation(s)
- K Murayama
- Department of Neurology, School of Medicine, University of North Carolina, Chapel Hill 27599-7025
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28
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Franco B, Lai LW, Patterson D, Ledbetter DH, Trask BJ, van den Engh G, Iannaccone S, Frances S, Patel PI, Lupski JR. Molecular characterization of a patient with del(1)(q23-q25). Hum Genet 1991; 87:269-77. [PMID: 1677922 DOI: 10.1007/bf00200903] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We report a patient (S.T.) with multiple congenital anomalies and developmental delay associated with an interstitial deletion of 1q23-1q25. Molecular analysis of the deletion was performed using DNA markers that map to 1q. Five DNA markers, MLAJ-1 (D1S61), CRI-L1054 (D1S42), HBI40 (D1S66), OS-6 (D1S75), and BH516 (D1S110), were demonstrated to be deleted. Informative polymorphisms demonstrated this to be a de novo deletion of the maternally derived chromosome. Deletion status was determined using restriction fragment length polymorphism (RFLP) analysis supplemented with densitometry in the experiments where RFLP analysis was not fully informative. Deletions were confirmed by Southern analysis using genomic DNA from a somatic cell hybrid retaining the del(1)(q23-q25) chromosome that was constructed from patient S.T. Flow karyotyping confirmed the deletion and estimated that the deletion encompassed 11,000-16,000 kb. The clinical and cytogenetic characteristics of S.T. are compared with those of ten previously described patients with monosomy 1q21-1q25.
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Affiliation(s)
- B Franco
- Institute for Molecular Genetics, Baylor College of Medicine, Houston, TX 77030
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29
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Kawasaki RS, Caldeira LF, André FS, Gasques JA, Castilho WH, Bozola AR, Thomé JA, Tajara EH. Multiple cytogenetic clones in a basal cell carcinoma. CANCER GENETICS AND CYTOGENETICS 1991; 54:33-8. [PMID: 2065314 DOI: 10.1016/0165-4608(91)90027-r] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Chromosome analysis of short-term culture of a basal cell carcinoma showed five clonal chromosome abnormalities, t(9;14)(q12 or q13;p11), del(1)(q23 or q25), trisomy 5, trisomy 7, and monosomy X. In addition, several nonclonal structural and numerical changes were seen in the tumor cells.
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Affiliation(s)
- R S Kawasaki
- Departamento de Biologia, UNESP Faculdade Regional de Medicina, São José do Rio Preto, Brazil
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30
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Zneimer SM, Lau KS, Eddy RL, Shows TB, Chuang JL, Chuang DT, Cox RP. Regional assignment of two genes of the human branched-chain alpha-keto acid dehydrogenase complex: the E1 beta gene (BCKDHB) to chromosome 6p21-22 and the E2 gene (DBT) to chromosome 1p31. Genomics 1991; 10:740-7. [PMID: 1889817 DOI: 10.1016/0888-7543(91)90458-q] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Maple syrup urine disease (MSUD) is caused by the deficiency of the mitochondrial branched-chain alpha-keto acid dehydrogenase complex. The multienzyme complex is a macromolecule (Mr 4 X 10(6] consisting of at least six distinct subunits. In this study, the human E1 beta gene (BCKDHB) has been localized to human chromosome 6 by hybrid somatic cell analysis, and regionally assigned to chromosome bands 6p21-22 by in situ hybridization. The E2 gene (DBT), which was previously localized to chromosome 1, is regionally assigned to the chromosome band 1p31 also by in situ hybridization. Localization of the E1 beta gene to chromosome 6p21-22 assigns another major human disease locus to a region that contains several important genes, including the major histocompatability complex, tumor necrosis factor, and heat-shock protein HSP70. Mapping of the E1 beta and the E2 genes may provide information for the linkage analysis of MSUD families with mutations in these two loci.
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Affiliation(s)
- S M Zneimer
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas 75235
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31
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Goldner-Sauvé A, Szpirer C, Szpirer J, Levan G, Gasser DL. Chromosome assignments of the genes for glucocorticoid receptor, myelin basic protein, leukocyte common antigen, and TRPM2 in the rat. Biochem Genet 1991; 29:275-86. [PMID: 1722973 DOI: 10.1007/bf00590108] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We have utilized rat-mouse somatic cell hybrids to make chromosomal assignments for the glucocorticoid receptor (GR), myelin basic protein (MBP), leukocyte common antigen (LCA), and testosterone-repressed prostate message-2 (TRPM2) genes in the rat. The genes for GR and MBP both map on chromosome 18 of the rat, which corresponds to the mapping of both genes on chromosome 18 of the mouse. The gene for LCA maps on chromosome 13, which is where C4b-binding protein beta-chain (C4BPB), coagulation factor V (F5), and renin have previously been assigned. This linkage group appears to be homologous to a substantial portion of mouse chromosome 1 and human chromosome 1q. Finally, the TRPM2 gene has been assigned to rat chromosome 15.
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Affiliation(s)
- A Goldner-Sauvé
- Department of Human Genetics, University of Pennsylvania School of Medicine, Philadelphia 19104
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32
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Dracopoli NC, O'Connell P, Elsner TI, Lalouel JM, White RL, Buetow KH, Nishimura DY, Murray JC, Helms C, Mishra SK. The CEPH consortium linkage map of human chromosome 1. Genomics 1991; 9:686-700. [PMID: 2037294 DOI: 10.1016/0888-7543(91)90362-i] [Citation(s) in RCA: 85] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
This paper describes the Centre d'Etude du Polymorphisme Humain (CEPH) consortium linkage map of human chromosome 1. The map contains 101 loci defined by genotypes generated from CEPH family DNAs with 146 different contributions from 11 laboratories. A total of 58 loci are uniquely placed on the map with likelihood support of at least 1000:1. The map extends from loci in the terminal bands of both chromosome arms (locus D1Z2 in 1p36.3 and D1S68 in 1q44) and is anchored at the centromere by the D1Z5 alpha-satellite polymorphism. With the exception of a single locus, the remaining loci are arrayed on the fixed map in short intervals and their possible locations are indicated. Multipoint linkage analyses provided estimates that the male, female, and sex-averaged maps extend for 308, 478, and 390 cM, respectively. The sex-averaged map contains only four intervals greater than 15 cM, and the mean genetic distance between the 58 uniquely placed loci is 6.7 cM.
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Affiliation(s)
- N C Dracopoli
- Department of Biology, Massachusetts Institute of Technology, Cambridge 02139
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33
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Affiliation(s)
- V Sharma
- Department of Medical Genetics, Oregon Health Sciences University, Portland 97201
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34
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35
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Kumar S, Kimberling WJ, Gabow PA, Shugart YY, Pieke-Dahl S. Exclusion of autosomal dominant polycystic kidney disease type II (ADPKD2) from 160 cM of chromosome 1. J Med Genet 1990; 27:697-700. [PMID: 1980516 PMCID: PMC1017261 DOI: 10.1136/jmg.27.11.697] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Autosomal dominant polycystic kidney disease is a heritable disorder and recent studies have shown genetic heterogeneity, with some, but not all, families showing linkage with markers on chromosome 16p. Members of a large ADPKD family, unlinked to chromosome 16, have been typed for 12 marker loci located on both arms of chromosome 1. Multipoint analysis excluded ADPKD2 from the region between D1S81 (pTHH33) and D1S67 (pHHH106) on the long arm and between Rh and PGM1 on the short arm. This excludes the disease locus from about 61% of chromosome 1.
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Affiliation(s)
- S Kumar
- Department of Genetics, Boys Town National Research Hospital, Omaha, Nebraska 68131
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36
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The Na+/H+ antiporter: a "melt" polymorphism allows regional mapping to the short arm of chromosome 1. Hum Genet 1990; 86:79-83. [PMID: 1979310 DOI: 10.1007/bf00205179] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The Na+/H+ antiporter is a ubiquitous membrane-associated protein that plays an important role in the regulation of intracellular pH. APNH, a gene encoding the antiporter, has been cloned and mapped to the short arm of chromosome 1 by in situ hybridization. Using the polymerase chain reaction, we have amplified a 376 base pair fragment corresponding to the 5' end of APNH. We have detected a polymorphism within this fragment by denaturing gradient gel electrophoresis. Using polymorphisms at other 1p loci (ALPL, the gene for alkaline phosphatase, RH and D1S57), we have been able to map APNH telomeric to D1S57 and close to RH and ALPL by genetic linkage. APNH is a plausible candidate gene for human essential hypertension; the APNH polymorphism combined with a knowledge of its genetic map location allow this candidate to be tested in hypertensive kindreds and sib-pairs.
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37
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Jenkins RN, Osborne-Lawrence SL, Sinclair AK, Eddy RL, Byers MG, Shows TB, Duby AD. Structure and chromosomal location of the human gene encoding cartilage matrix protein. J Biol Chem 1990. [DOI: 10.1016/s0021-9258(17)45417-2] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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38
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Olson E, Edmondson D, Wright WE, Lin VK, Guenet JL, Simon-Chazottes D, Thompson LH, Stallings RL, Schroeder WT, Duvic M. Myogenin is in an evolutionarily conserved linkage group on human chromosome 1q31-q41 and unlinked to other mapped muscle regulatory factor genes. Genomics 1990; 8:427-34. [PMID: 1962752 DOI: 10.1016/0888-7543(90)90028-s] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Myogenin is a member of a family of muscle-specific regulatory factors which includes MyoD1, Myf-5, and Myf-6 (also called MRF4 and herculin). Extensive regions of sequence homology in genes for these three factors suggest duplication events associated with their evolution. In the present study, the chromosomal location of the myogenin gene in humans (MYOG), mice (Myog), and Chinese hamsters (MYOG) was determined using in situ hybridization to human metaphase chromosomes as well as segregation analysis among interspecific somatic cell hybrid panels and interspecific backcrossed mice. We localize the gene encoding myogenin to human chromosome 1q31-q41 within a linkage group homologous with a region on mouse chromosome 1 and Chinese hamster chromosome 5. The results verify the nonlinkage of MYOG to MYOD1, MYF5, and MYF6 genes and indicate that events associated with the duplication of MYOG with respect to MYOD1, MYF5, or MYF6 loci were not chromosome-wide.
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Affiliation(s)
- E Olson
- Department of Biochemistry and Molecular Biology, University of Texas, M. D. Anderson Cancer Center, Houston 77030
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39
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Ikemura T, Wada K, Aota S. Giant G+C% mosaic structures of the human genome found by arrangement of GenBank human DNA sequences according to genetic positions. Genomics 1990; 8:207-16. [PMID: 2249845 DOI: 10.1016/0888-7543(90)90273-w] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
To determine the overall variation in the G+C% distribution over long ranges of the human genome, DNA sequences of human genes, which were closely linked genetically or physically, were surveyed from the GenBank Data Bank. A total of 72 sequences longer than 2 kb, which were mutually linked within 500 kb, were identified. The sequences belonged to 17 linkage groups and were ordered in each group according to their genetic positions. Analyses of the G+C% distribution along the ordered sequences showed that sequences within each group almost always had similar G+C% levels, but those belonging to different groups often had different levels. Similar analyses of more distantly linked sequences (e.g., greater than 10 Mb) showed mosaic structures of G+C% distribution. These findings are consistent with predictions made from the "isochore" structures found by CsCl equilibrium centrifugation, in that the structures having homogeneous base compositions stretched over at least several hundred kilobases. A possible boundary of the giant G+C% mosaic structures was identified between X-linked G6PD and F8C.
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Affiliation(s)
- T Ikemura
- DNA Research Center, National Institute of Genetics, Shizuoka-ken, Japan
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40
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Abstract
Bovine X hamster hybrid somatic cells have been used to investigate the syntenic relationship of nine loci in the bovine that have homologous loci on human chromosome 9. Six loci, ALDH1, ALDOB, C5, GGTB2, GSN, and ITIL, were assigned to the previously identified bovine syntenic group U18 represented by ACO1, whereas the other three loci, ABL, ASS, and GRP78, mapped to a new, previously unidentified autosomal syntenic group. Additionally, a secondary locus, ABLL, which cross-hybridized with the ABL probe, was mapped to bovine syntenic group U1 with the HSA 1 loci PGD and ENO1. The results predict that ACO1 will map proximal to ALDH1; GRP78 distal to ITIL and C5; GSN proximal to AK1, ABL, and ASS on HSA 9; GRP78 to MMU 2; and ITIL and GSN to MMU 4.
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Affiliation(s)
- D W Threadgill
- Department of Veterinary Pathology, Texas A&M University, College Station 77843
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41
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Abstract
The TGF beta-1 and PGD loci have been localized by in situ hybridization to the C-greater than q2.1 and q2.2 -greater than q2.5 regions of pig chromosome 6. These assignments confirm that the conversation of syntenic groups around GPI and PGD extends to pigs where these two groups are uniquely found to be linked. Our data also support the hypothesis that the porcine and human inherited malignant hyperthermia syndromes are caused by mutations in homologous genes which map to human chromosome 19q, porcine chromosome 6q and murine chromosome 7.
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Affiliation(s)
- M Yerle
- INRA Centre de Recherches de Toulouse, Laboratoire de Génétique Cellulaire, Castanet-Tolosan, France
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42
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McAlpine PJ, Feasby TE, Hahn AF, Komarnicki L, James S, Guy C, Dixon M, Qayyum S, Wright J, Coopland G. Localization of a locus for Charcot-Marie-Tooth neuropathy type Ia (CMT1A) to chromosome 17. Genomics 1990; 7:408-15. [PMID: 2365358 DOI: 10.1016/0888-7543(90)90175-t] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Phenotypic data for 71 genetic markers for members of five Caucasian kindreds were tested for linkage with the autosomal dominant mutations causing Charcot-Marie-Tooth (hereditary motor sensory) neuropathy type I, characterized by markedly reduced nerve conduction velocities. Lod score analysis gave no evidence of linkage to the closely linked chromosome 1 loci SPTA1-FY-F5-AT3 and APOA2. In contrast, these mutations were found to map closely (zeta = 10.828, theta = 0.0) to D17S58, an anonymous segment of DNA from 17p11.2-p11.1, and thus define the CMT1A locus. Segregation information data for an inferred recombinant offspring indicated that the CMT1A locus is probably proximal to MYH2, the locus encoding adult skeletal muscle myosin heavy polypeptide 2, which maps to 17p13. Analysis of the lod scores on a per kindred basis gave no evidence of genetic heterogeneity.
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Affiliation(s)
- P J McAlpine
- Department of Human Genetics, University of Manitoba, Winnipeg, Canada
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43
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Hunt JD, Tereba A. Molecular evaluation of abnormalities of the short arm of chromosome 1 in neuroblastoma. Genes Chromosomes Cancer 1990; 2:137-46. [PMID: 1980608 DOI: 10.1002/gcc.2870020210] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Cytogenetic analyses have documented the consistent deletion of part of the short arm of chromosome 1 in neuroblastoma cells suggesting the presence of a suppressor gene in this chromosomal region. To determine, the smallest region of deletion overlap at the molecular level on independently derived tumors and to define the location of the breakpoints more precisely, Southern analyses were performed on a somatic cell hybrid panel containing the normal and altered chromosomes 1 from seven neuroblastoma lines. By this method we were able to analyze a panel of 20 cloned sequences and two isozymes to determine the location of the breakpoints. Our findings indicate that the proximal breakpoints of chromosome 1 deletions ranged over a distance of more than 50 cM with the most distal deletion breakpoint occurring between MYCL1 and D1S57. In addition, using restriction fragment length polymorphisms, it was determined that in at least three of the five cell lines in which MYCL1 was deleted from a chromosome 1, the gene was translocated to another chromosome thus retaining the diploid complement. We propose that the neuroblastoma susceptibility gene is located distal to MYCL1 and that there is another gene which is linked to MYCL1 that may be involved in this neoplasm.
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Affiliation(s)
- J D Hunt
- Department of Virology and Molecular Biology, St. Jude Children's Research Hospital, Memphis, TN 38101-0318
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44
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Chand A, Olsson JE, Adams L, Denton MJ. Exclusion of the autosomal dominant retinitis pigmentosa gene from a substantial region of chromosome 1: study of a large Australian family. AUSTRALIAN AND NEW ZEALAND JOURNAL OF OPHTHALMOLOGY 1990; 18:163-9. [PMID: 1975184 DOI: 10.1111/j.1442-9071.1990.tb00609.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
In an attempt to map the gene(s) responsible for autosomal dominant retinitis pigmentosa (ADRP), the technique of reverse genetics was used on a large multigenerational Australian pedigree. The family demonstrated a form of the disease which appears to be less severe than that observed in the Irish pedigree. It was typed for 10 restriction fragment length polymorphism (RFLP) markers on chromosome 1. The data from the linkage study was analysed using the programs LIPED 3; six markers gave informative results. The ADRP gene was excluded from this family from 102 cM using previously prepared chromosome 1 maps. This accounts for 36% of chromosome 1 which is estimated to be the longest human chromosome.
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Affiliation(s)
- A Chand
- Department of Pathology, Prince of Wales Hospital, Randwick, NSW, Australia
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