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Hinks A, Bowes J, Cobb J, Ainsworth HC, Marion MC, Comeau ME, Sudman M, Han B, Becker ML, Bohnsack JF, de Bakker PIW, Haas JP, Hazen M, Lovell DJ, Nigrovic PA, Nordal E, Punnaro M, Rosenberg AM, Rygg M, Smith SL, Wise CA, Videm V, Wedderburn LR, Yarwood A, Yeung RSM, Prahalad S, Langefeld CD, Raychaudhuri S, Thompson SD, Thomson W. Fine-mapping the MHC locus in juvenile idiopathic arthritis (JIA) reveals genetic heterogeneity corresponding to distinct adult inflammatory arthritic diseases. Ann Rheum Dis 2016; 76:765-772. [PMID: 27998952 PMCID: PMC5530326 DOI: 10.1136/annrheumdis-2016-210025] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 09/12/2016] [Accepted: 11/05/2016] [Indexed: 11/06/2022]
Abstract
Objectives Juvenile idiopathic arthritis (JIA) is a heterogeneous group of diseases, comprising seven categories. Genetic data could potentially be used to help redefine JIA categories and improve the current classification system. The human leucocyte antigen (HLA) region is strongly associated with JIA. Fine-mapping of the region was performed to look for similarities and differences in HLA associations between the JIA categories and define correspondences with adult inflammatory arthritides. Methods Dense genotype data from the HLA region, from the Immunochip array for 5043 JIA cases and 14 390 controls, were used to impute single-nucleotide polymorphisms, HLA classical alleles and amino acids. Bivariate analysis was performed to investigate genetic correlation between the JIA categories. Conditional analysis was used to identify additional effects within the region. Comparison of the findings with those in adult inflammatory arthritic diseases was performed. Results We identified category-specific associations and have demonstrated for the first time that rheumatoid factor (RF)-negative polyarticular JIA and oligoarticular JIA are genetically similar in their HLA associations. We also observe that each JIA category potentially has an adult counterpart. The RF-positive polyarthritis association at HLA-DRB1 amino acid at position 13 mirrors the association in adult seropositive rheumatoid arthritis (RA). Interestingly, the combined oligoarthritis and RF-negative polyarthritis dataset shares the same association with adult seronegative RA. Conclusions The findings suggest the value of using genetic data in helping to classify the categories of this heterogeneous disease. Mapping JIA categories to adult counterparts could enable shared knowledge of disease pathogenesis and aetiology and facilitate transition from paediatric to adult services.
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Affiliation(s)
- A Hinks
- Arthritis Research UK Centre for Genetics and Genomics, Manchester Academic Health Science Centre, University Of Manchester, Manchester, UK
| | - J Bowes
- Arthritis Research UK Centre for Genetics and Genomics, Manchester Academic Health Science Centre, University Of Manchester, Manchester, UK
| | - J Cobb
- Arthritis Research UK Centre for Genetics and Genomics, Manchester Academic Health Science Centre, University Of Manchester, Manchester, UK.,NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester University Hospitals NHS Foundation Trust, Manchester, UK
| | - H C Ainsworth
- Center for Public Health Genomics and Department of Biostatistical Sciences, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
| | - M C Marion
- Center for Public Health Genomics and Department of Biostatistical Sciences, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
| | - M E Comeau
- Center for Public Health Genomics and Department of Biostatistical Sciences, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
| | - M Sudman
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - B Han
- Divisions of Genetics and Rheumatology, Brigham and Women's Hospital, Harvard Medical School, Boston, USA.,Department of Convergence Medicine, University of Ulsan College of Medicine & Asan Institute for Life Sciences, Asan Medical Center, Seoul, Republic of Korea
| | | | - M L Becker
- Division of Rheumatology and Division of Clinical Pharmacology, Toxicology, and Therapeutic Innovation, Children's Mercy-Kansas City, Kansas City, Missouri, USA
| | - J F Bohnsack
- Division of Allergy, Immunology and Paediatric Rheumatology, University of Utah, Salt Lake City, Utah, USA
| | - P I W de Bakker
- Department of Medical Genetics, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht, The Netherlands
| | - J P Haas
- German Center for Pediatric and Adolescent Rheumatology, Garmisch-Partenkirchen, Germany
| | - M Hazen
- Division of Immunology, Department of Rheumatology, Boston Children's Hospital, Boston, Massachusetts, USA
| | - D J Lovell
- Division of Rheumatology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - P A Nigrovic
- Division of Immunology, Department of Rheumatology, Boston Children's Hospital, Boston, Massachusetts, USA.,Division of Rheumatology, Immunology and Allergy, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, USA
| | - E Nordal
- Department of Paediatrics, University Hospital of North Norway, and UIT The Arctic University of Norway, Tromsø, Norway
| | - M Punnaro
- Arthritis Clinic Texas Scottish Rite Hospital for Children, Dallas, Texas, USA.,Department of Paediatrics, UT Southwestern Medical Center, Dallas, Texas, USA
| | - A M Rosenberg
- Division of Rheumatology, Department of Paediatrics, University of Saskatchewan, Saskatoon, Canada
| | - M Rygg
- Department of Laboratory Medicine, Children's and Women's Health, NTNU - Norwegian University of Science and Technology, and St. Olavs University Hospital, Trondheim, Norway
| | - S L Smith
- Arthritis Research UK Centre for Genetics and Genomics, Manchester Academic Health Science Centre, University Of Manchester, Manchester, UK
| | - C A Wise
- Sarah M. and Charles E. Seay Center for Musculoskeletal Research, Texas Scottish Rite Hospital for Children, Dallas, Texas, USA.,Department of Orthopaedic Surgery, Paediatrics, and McDermott Center for Human Growth and Development, UT Southwestern Medical Center, Dallas, Texas, USA
| | - V Videm
- Department of Laboratory Medicine, Children's and Women's Health, NTNU - Norwegian University of Science and Technology, and St. Olavs University Hospital, Trondheim, Norway
| | - L R Wedderburn
- Arthritis Research UK Centre for Adolescent Rheumatology, UCL GOS Institute of Child Health, University College London, London, UK.,NIHR-Great Ormond Street Hospital Biomedical Research Centre, London, UK
| | - A Yarwood
- Arthritis Research UK Centre for Genetics and Genomics, Manchester Academic Health Science Centre, University Of Manchester, Manchester, UK
| | - R S M Yeung
- The Hospital for Sick Children and University of Toronto, Toronto, Canada
| | - S Prahalad
- Department of Paediatrics, Emory University School of Medicine, and Children's Healthcare of Atlanta, Atlanta, USA
| | - C D Langefeld
- Center for Public Health Genomics and Department of Biostatistical Sciences, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
| | - S Raychaudhuri
- Arthritis Research UK Centre for Genetics and Genomics, Manchester Academic Health Science Centre, University Of Manchester, Manchester, UK.,Divisions of Genetics and Rheumatology, Brigham and Women's Hospital, Harvard Medical School, Boston, USA.,Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, USA.,Department of Medicine, Karolinska Institutet and Karolinska University Hospital Solna, Stockholm, Sweden
| | - S D Thompson
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - W Thomson
- Arthritis Research UK Centre for Genetics and Genomics, Manchester Academic Health Science Centre, University Of Manchester, Manchester, UK.,NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester University Hospitals NHS Foundation Trust, Manchester, UK
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Zhang D, Herring JA, Swaney SS, McClendon TB, Gao X, Browne RH, Rathjen KE, Johnston CE, Harris S, Cain NM, Wise CA. Mutations responsible for Larsen syndrome cluster in the FLNB protein. J Med Genet 2006; 43:e24. [PMID: 16648377 PMCID: PMC2564529 DOI: 10.1136/jmg.2005.038695] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2005] [Revised: 11/02/2005] [Accepted: 11/04/2005] [Indexed: 11/03/2022]
Abstract
BACKGROUND A gene for Larsen syndrome was recently described, and mutations were reported in five cases. OBJECTIVE To test whether mutations in this gene, FLNB, could explain the disease in our independent collection of sporadic and dominant Larsen syndrome cases; and to test whether mutations occurred in a non-random pattern. RESULTS Missense mutations were found in each of five cases. Four of the five were new; one was reported in a sporadic case in the original Larsen syndrome study of five cases. All mutations from the two studies were compiled. Clustered mutations were observed within three filamin B protein domains: the calponin homology 2 domain, repeat 14, and repeat 15. This suggested that as few as five (of the total of 46) coding exons of FLNB could be screened to detect Larsen syndrome mutations. Four of these exons were screened in a sixth (sporadic) case and a previously reported G1691S substitution mutation detected. CONCLUSIONS Mutations in FLNB may be responsible for all cases of Larsen syndrome. They appear to occur in specific functional domains of the filamin B protein. This should simplify diagnostic screening of the FLNB gene. Analyses in larger patient series are warranted to quantify this. The study confirmed the extreme variability in clinical presentation and the presence of unaffected carriers. A molecular screen would be valuable for diagnosis and genetic counselling.
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Affiliation(s)
- D Zhang
- Seay Center for Musculoskeletal Research, Texas Scottish Rite Hospital for Children, Dallas, TX 75219, USA
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3
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Abstract
Genomic data have increasingly been used to complement linguistic, archeological, and anthropological evidence in reconstructing the origins and migratory patterns of modern humans. East Asia is a particular hotspot of human migration, especially mainland China, where a large number of human fossils have been unearthed and more than 20% of the world's population now resides. There are 56 officially recognized ethnic populations (minzu) in China. In the present study we investigated the ancestry and genetic diversity of nine populations: the majority Han of Liaoning Province; the Miao, Yao, Kucong, and Tibetan communities of Yunnan Province in southwest China; and four Muslim populations, the Hui, Bonan, Dongxiang, and Sala from central and northern China. We used both biparental and uniparental markers to determine patterns of diversity at autosomal, mitochondrial, and Y-chromosome loci. The study populations displayed several paternal origins but restricted maternal ancestries. From the Y-chromosome data in particular, major demographic changes, such as the Neolithic population expansion and more recent historical events including migration along the Silk Road, could be inferred. Specific aspects of the internal structure and organization of the study populations, including endogamy and consanguinity, were uncovered using autosomal markers. However, we encountered interpretive problems in terms of the definition of the present-day ethnic study populations in China, which appear to reflect past and present political as well as genetic influences.
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Affiliation(s)
- M L Black
- Centre for Human Genetics, Edith Cowan University, 100 Joondalup Drive, Perth, WA 6027, Australia
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Bonafé L, Blanton SH, Scott A, Broussard S, Wise CA, Superti-Furga A, Hecht JT. DTDST mutations are not a frequent cause of idiopathic talipes equinovarus (club foot). J Med Genet 2002; 39:e20. [PMID: 11950872 PMCID: PMC1735093 DOI: 10.1136/jmg.39.4.e20] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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5
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Abstract
STUDY DESIGN Genome-wide linkage surveys in large multiplex families with apparent inherited idiopathic scoliosis. OBJECTIVE To identify chromosomal loci encoding genes involved in susceptibility to idiopathic scoliosis by positional cloning. SUMMARY OF BACKGROUND DATA Although the inheritance of idiopathic scoliosis most often exhibits a complex pattern, autosomal dominant inheritance can be identified in some families. Families exhibiting such an inheritance pattern present an opportunity to identify the predisposing gene(s) by positional cloning. METHODS Probands having clinically relevant idiopathic scoliosis (50 degrees Cobb angle) from large multiplex families were identified. A curve of 15 degrees, made from standing posteroanterior radiographs, was required for a positive diagnosis. A genome-wide search in one large family (seven affected members) was conducted with 385 polymorphic microsatellite markers spaced at an approximate 10-cM resolution. Hot spots identified in this family were subsequently tested in a second large kindred. RESULTS Maximum evidence of allele-sharing in affected individuals from the first family was detected for three loci on chromosomes 6p, distal 10q, and 18q with nonparametric lod scores of 1.42 (P = 0.020), 1.60 (P = 0.019), and 8.26 (P = 0.002), respectively. Evidence of allele-sharing was also detected in the second family at distal chromosome 10q (nonparametric lod score = 2.02; P = 0.033). CONCLUSIONS These data indicate a limited number of genetic loci predisposing to idiopathic scoliosis.
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Affiliation(s)
- C A Wise
- Texas Scottish Rite Hospital for Children, Dallas, Texas 75219, USA.
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Abstract
OBJECTIVE To localize the gene for familial recurrent arthritis via a genome-wide linkage scan in an extended kindred with the disease. METHODS A 3-generation family in which 9 members were diagnosed with juvenile idiopathic arthritis (JIA) was ascertained. In this family the disease was of very early onset and included episodic inflammation leading to eventual destruction of joints, muscle, and skin. We treated this disorder as a distinct clinical entity that we have named "familial recurrent arthritis." A genome-wide linkage scan with polymorphic microsatellites at 10-15-cM resolution was initiated. RESULTS The genome-wide scan generated a maximum 2-point logarithm of odds score with D15S211 (Zmax = 3.27 at thetamax = 0.0010). Haplotype reconstruction defined a candidate region of approximately 20 cM flanked proximally by D15S983 and distally by D15S127 on human chromosome 15. CONCLUSION A gene for familial recurrent arthritis was localized to 15q22-24, as a result of a genome-wide linkage scan in a large, multiply affected kindred. Identification of the altered gene will provide insights into the pathogenesis of autoimmune joint destruction that is reminiscent of JIA.
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Affiliation(s)
- C A Wise
- Research Department, Texas Scottish Rite Hospital for Children, Dallas 75219, USA
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Abstract
To test whether patterns of mitochondrial DNA (mtDNA) variation are consistent with a neutral model of molecular evolution, nucleotide sequences were determined for the 1041 bp of the NADH dehydrogenase subunit 2 (ND2) gene in 20 geographically diverse humans and 20 common chimpanzees. Contingency tests of neutrality were performed using four mutational categories for the ND2 molecule: synonymous and nonsynonymous mutations in the transmembrane regions, and synonymous and nonsynonymous mutations in the surface regions. The following three topological mutational categories were also used: intraspecific tips, intraspecific interiors, and interspecific fixed differences. The analyses reveal a significantly greater number of nonsynonymous polymorphisms within human transmembrane regions than expected based on interspecific comparisons, and they are inconsistent with a neutral equilibrium model. This pattern of excess nonsynonymous polymorphism is not seen within chimpanzees. Statistical tests of neutrality, such as TAJIMA's D test, and the D and F tests proposed by FU and LI, indicate an excess of low frequency polymorphisms in the human data, but not in the chimpanzee data. This is consistent with recent directional selection, a population bottleneck or background selection of slightly deleterious mutations in human mtDNA samples. The analyses further support the idea that mitochondrial genome evolution is governed by selective forces that have the potential to affect its use as a "neutral" marker in evolutionary and population genetic studies.
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Affiliation(s)
- C A Wise
- The John Curtin School of Medical Research, The Australian National University, Canberra, ACT.
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8
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Abstract
Restriction mapping and sequencing have shown that humans have substantially lower levels of mitochondrial genome diversity (d) than chimpanzees. In contrast, humans have substantially higher levels of heterozygosity (H) at protein-coding loci, suggesting a higher level of diversity in the nuclear genome. To investigate the discrepancy further, we sequenced a segment of the mitochondrial genome control region (CR) from 49 chimpanzees. The majority of these were from the Pan troglodytes versus subspecies, which was underrepresented in previous studies. We also estimated the average heterozygosity at 60 short tandem repeat (STR) loci in both species. For a total sample of 115 chimpanzees, d = 0.075 +/0 0.037, compared to 0.020 +/- 0.011 for a sample of 1,554 humans. The heterozygosity of human STR loci is significantly higher than that of chimpanzees. Thus, the higher level of nuclear genome diversity relative to mitochondrial genome diversity in humans is not restricted to protein-coding loci. It seems that humans, not chimpanzees, have an unusual d/H ratio, since the ratio in chimpanzees is similar to that in other catarrhines. This discrepancy in the relative levels of nuclear and mitochondrial genome diversity in the two species cannot be explained by differences in mutation rate. However, it may result from a combination of factors such as a difference in the extent of sex ratio disparity, the greater effect of population subdivision on mitochondrial than on nuclear genome diversity, a difference in the relative levels of male and female migration among subpopulations, diversifying selection acting to increase variation in the nuclear genome, and/or directional selection acting to reduce variation in the mitochondrial genome.
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Affiliation(s)
- C A Wise
- John Curtin School of Medical Research, Australian National University, Canberra, Australia.
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9
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Wise CA, Chiang LC, Paznekas WA, Sharma M, Musy MM, Ashley JA, Lovett M, Jabs EW. TCOF1 gene encodes a putative nucleolar phosphoprotein that exhibits mutations in Treacher Collins Syndrome throughout its coding region. Proc Natl Acad Sci U S A 1997; 94:3110-5. [PMID: 9096354 PMCID: PMC20330 DOI: 10.1073/pnas.94.7.3110] [Citation(s) in RCA: 136] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Treacher Collins Syndrome (TCS) is the most common of the human mandibulofacial dysostosis disorders. Recently, a partial TCOF1 cDNA was identified and shown to contain mutations in TCS families. Here we present the entire exon/intron genomic structure and the complete coding sequence of TCOF1. TCOF1 encodes a low complexity protein of 1,411 amino acids, whose predicted protein structure reveals repeated motifs that mirror the organization of its exons. These motifs are shared with nucleolar trafficking proteins in other species and are predicted to be highly phosphorylated by casein kinase. Consistent with this, the full-length TCOF1 protein sequence also contains putative nuclear and nucleolar localization signals. Throughout the open reading frame, we detected an additional eight mutations in TCS families and several polymorphisms. We postulate that TCS results from defects in a nucleolar trafficking protein that is critically required during human craniofacial development.
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Affiliation(s)
- C A Wise
- Department of Otorhinolaryngology, University of Texas Southwestern Medical Center, Dallas 75235, USA
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Wise CA, Clines GA, Massa H, Trask BJ, Lovett M. Identification and localization of the gene for EXTL, a third member of the multiple exostoses gene family. Genome Res 1997; 7:10-6. [PMID: 9037597 DOI: 10.1101/gr.7.1.10] [Citation(s) in RCA: 108] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Hereditary multiple exostoses (EXT) is an autosomal dominant disorder characterized by multiple bony outgrowths from the juxtaepiphyseal region of long bones. In a small proportion of cases, these exostoses progress to malignant chondrosarcomas. Genetic linkage of this disorder has been described to three independent loci on chromosomes 8q24.1 (EXT1), 11p11-13 (EXT2), and 19p (EXT-3). The EXT1 and EXT2 genes were isolated recently and show extensive sequence homology to each other. These genes are deleted in exostoses-derived tumors, supporting the hypothesis that they encode tumor suppressors. We have identified a third gene that shows striking sequence similarity to both EXT1 and EXT2 at the nucleotide and amino acid sequence levels, and have derived its entire coding sequence. Although the mRNA transcribed from this gene is similar in size to that from EXT1 and EXT2, its pattern of expression is quite different. We have localized this gene by fluorescence in situ hybridization to metaphase chromosomes and by whole genome radiation hybrid mapping to chromosome 1p36.1 between DIS458 and DIS511, region that frequently shows loss of heterozygosity in a variety of tumor types. This gene, EXTL (for EXT-like), is therefore a new member of the EXT gene family and is a potential candidate for several disease phenotypes.
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MESH Headings
- Amino Acid Sequence
- Chromosome Mapping
- Chromosomes, Artificial, Yeast
- Chromosomes, Human, Pair 1
- Chromosomes, Human, Pair 19
- Chromosomes, Human, Pair 8
- Exostoses, Multiple Hereditary/genetics
- Genes, Tumor Suppressor
- Genetic Linkage
- Genetic Markers
- Humans
- In Situ Hybridization, Fluorescence
- Molecular Sequence Data
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Affiliation(s)
- C A Wise
- Department of Otorhinolaryngology, Molecular Biology, and Oncology, University of Texas Southwestern Medical Center at Dallas 75235-8591, USA
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Groom KR, Dang YL, Gao GJ, Lou YC, Martin NC, Wise CA, Morales MJ. Genetic and biochemical approaches for analysis of mitochondrial RNase P from Saccharomyces cerevisiae. Methods Enzymol 1996; 264:86-99. [PMID: 8965730 DOI: 10.1016/s0076-6879(96)64011-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
MESH Headings
- Base Sequence
- Centrifugation, Density Gradient/methods
- Chromatography, Affinity/methods
- Chromatography, DEAE-Cellulose/methods
- Chromatography, Ion Exchange/methods
- Cloning, Molecular/methods
- DNA, Mitochondrial/metabolism
- Electrophoresis, Polyacrylamide Gel/methods
- Endoribonucleases/biosynthesis
- Endoribonucleases/isolation & purification
- Endoribonucleases/metabolism
- Genes, Fungal
- Kinetics
- Mitochondria/enzymology
- Molecular Sequence Data
- Plasmids
- RNA/biosynthesis
- RNA/metabolism
- RNA, Catalytic/biosynthesis
- RNA, Catalytic/isolation & purification
- RNA, Catalytic/metabolism
- RNA, Fungal/biosynthesis
- RNA, Fungal/metabolism
- RNA, Mitochondrial
- Restriction Mapping
- Ribonuclease P
- Saccharomyces cerevisiae/enzymology
- Saccharomyces cerevisiae/genetics
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Affiliation(s)
- K R Groom
- Department of Biochemistry, University of Louisville School of Medicine, Kentucky 40292, USA
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12
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Abstract
The human chromosome 5q31--q33 region contains an interesting cluster of growth factor and receptor genes. In addition, several genetic disease loci have been localized within this region, but have not as yet been isolated as molecular clones. These include those loci involved in autosomal dominant limb-girdle muscular dystrophy, diastrophic dysplasia, Treacher Collins syndrome, and myeloid disorders associated with the 5q- syndrome. A yeast artificial chromosome (YAC) contig of this region would assist in the further localization and isolation of these genes. We have used YACs isolated from the Washington University and Centre d'Etude du Polymorphisme Humain YAC libraries, including YACs from the large insert (mega) YAC library to build a contig greater than 3 Mb in size. An STS content strategy coupled with limited walking from YAC ends was used to isolate 22 overlapping YACs with as much as sixfold coverage. A total of 20 STSs, derived from genes, anonymous sequences, and vector Alu-PCR or inverse PCR products, were used to compile this contig. The order of loci, centromere-GRL-D5S207-D5S70-D5S545-D5S546- D5S547-D5S68-D5S548-D5S210-D5S549- D5S686-ADRB2-D5S559-CSF1R-D5S551-RPS14+ ++-D5S519-SPARC-telomere, was derived from the overlapping clones. This contig and clones derived from it will be useful substrates in selecting candidate cDNAs for the disease loci in this interval.
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Affiliation(s)
- X Li
- Department of Pediatrics, Johns Hopkins School of Medicine, Baltimore, Maryland 21287
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13
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Wise CA, Garcia CA, Davis SN, Heju Z, Pentao L, Patel PI, Lupski JR. Molecular analyses of unrelated Charcot-Marie-Tooth (CMT) disease patients suggest a high frequency of the CMTIA duplication. Am J Hum Genet 1993; 53:853-63. [PMID: 8105684 PMCID: PMC1682385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Charcot-Marie-Tooth disease (CMT) is the most common inherited peripheral neuropathy. One form of CMT, CMT type 1A, is characterized by uniformly decreased nerve conduction velocities, usually shows autosomal dominant inheritance, and is associated with a large submicroscopic duplication of the p11.2-p12 region of chromosome 17. A cohort of 75 unrelated patients diagnosed clinically with CMT and evaluated by electrophysiological methods were analyzed molecularly for the presence of the CMT1A DNA duplication. Three methodologies were used to assess the duplication: measurement of dosage differences between RFLP alleles, analysis of polymorphic (GT)n repeats, and detection of a junction fragment by pulsed-field gel electrophoresis. The CMT1A duplication was found in 68% of the 63 unrelated CMT patients with electrophysiological studies consistent with CMT type 1 (CMT1). The CMT1A duplication was detected as a de novo event in two CMT1 families. Twelve CMT patients who did not have decreased nerve conduction velocities consistent with a diagnosis of CMT type 2 (CMT2) were found not to have the CMT1A duplication. The most informative molecular method was the detection of the CMT1A duplication-specific junction fragment. Given the high frequency of the CMT1A duplication in CMT patients and the high frequency of new mutations, we conclude that a molecular test for the CMT1A DNA duplication is very useful in the differential diagnosis of patients with peripheral neuropathies.
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Affiliation(s)
- C A Wise
- Institute for Molecular Genetics, Baylor College of Medicine, Houston 77030
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14
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Roa BB, Garcia CA, Suter U, Kulpa DA, Wise CA, Mueller J, Welcher AA, Snipes GJ, Shooter EM, Patel PI, Lupski JR. Charcot-Marie-Tooth disease type 1A. Association with a spontaneous point mutation in the PMP22 gene. N Engl J Med 1993; 329:96-101. [PMID: 8510709 DOI: 10.1056/nejm199307083290205] [Citation(s) in RCA: 223] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Charcot-Marie-Tooth disease (CMT) is the most common inherited peripheral neuropathy. CMT type 1A is associated with a 1.5-megabase DNA duplication in region p11.2-p12 of chromosome 17 in most patients. An increased dosage of a gene within the duplicated segment appears to cause the disease. The PMP22 gene, which encodes a myelin protein, has been mapped within the duplication and proposed as a candidate gene for CMT type 1A. METHODS We analyzed DNA samples from a cohort of 32 unrelated patients with CMT type 1 who did not have the 1.5-Mb tandem duplication in 17p11.2-p12 for mutations within the PMP22 coding region. Molecular techniques included the polymerase chain reaction (PCR), heteroduplex analysis to detect point mutations, and direct nucleotide-sequence determination of amplified PCR products. RESULTS A 10-year-old boy was identified with a point mutation in PMP22, which resulted in the substitution of cysteine for serine in a putative transmembrane domain of PMP22. Analysis of family members revealed that the PMP22 point mutation arose spontaneously and segregated with the CMT type 1 phenotype in an autosomal dominant pattern. The patients with the PMP22 point mutation had clinical and electrophysiologic phenotypes that were similar to those of patients with the 1.5-Mb duplication. CONCLUSIONS The PMP22 gene has a causative role in CMT type 1. Either a point mutation in PMP22 or a duplication of the region including the PMP22 gene can result in the disease phenotype.
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Affiliation(s)
- B B Roa
- Institute for Molecular Genetics, Baylor College of Medicine, Houston, TX 77030-3498
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15
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Pentao L, Wise CA, Chinault AC, Patel PI, Lupski JR. Charcot-Marie-Tooth type 1A duplication appears to arise from recombination at repeat sequences flanking the 1.5 Mb monomer unit. Nat Genet 1992; 2:292-300. [PMID: 1303282 DOI: 10.1038/ng1292-292] [Citation(s) in RCA: 287] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
We have constructed a 3.1 megabase (Mb) physical map of chromosome 17p11.2-p12, which contains a submicroscopic duplication in patients with Charcot-Marie-Tooth disease type 1A (CMT1A). We find that the CMT1A duplication is a tandem repeat of 1.5 Mb of DNA. A YAC contig encompassing the CMT1A duplication and spanning the endpoints was also developed. Several low copy repeats in 17p11.2-p12 were identified including the large (> 17 kb) CMT1A-REP unit which may be part of a mosaic repeat. CMT1A-REP flanks the 1.5 Mb CMT1A monomer unit on normal chromosome 17 and is present in an additional copy on the CMT1A duplicated chromosome. We propose that the de novo CMT1A duplication arises from unequal crossing over due to misalignment at these CMT1A-REP repeat sequences during meiosis.
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Affiliation(s)
- L Pentao
- Institute for Molecular Genetics, College of Medicine, Houston, Texas 77030
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Lupski JR, Wise CA, Kuwano A, Pentao L, Parke JT, Glaze DG, Ledbetter DH, Greenberg F, Patel PI. Gene dosage is a mechanism for Charcot-Marie-Tooth disease type 1A. Nat Genet 1992; 1:29-33. [PMID: 1301995 DOI: 10.1038/ng0492-29] [Citation(s) in RCA: 190] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Charcot-Marie-Tooth disease type 1A (CMT1A) is the most common inherited peripheral neuropathy in humans, characterized electrophysiologically by decreased nerve conduction velocities (NCVs). CMT1A is associated with a large submicroscopic DNA duplication in proximal 17p. In this report we demonstrate that a patient with a cytogenetically visible duplication, dup(17)(p11.2p12), has decreased NCV. Molecular analysis demonstrated this patient was duplicated for all the DNA markers duplicated in CMT1A as well as markers both proximal and distal to the CMT1A duplication. These data support the hypothesis that the CMT1A phenotype can result from a gene dosage effect.
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Affiliation(s)
- J R Lupski
- Institute for Molecular Genetics, Texas Children's Hospital Baylor College of Medicine, Houston 77030
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17
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Allbert JR, Wise CA, Lou CH, Gookin KS, Parmenter MA, Morrison JC. Subcutaneous tocolytic infusion therapy for patients at very high risk for preterm birth. J Perinatol 1992; 12:28-31. [PMID: 1348530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
Patients with multiple gestations or recalcitrant preterm labor are at very high risk for preterm birth in spite of adequate tocolysis. Subcutaneous infusion of tocolytic medications on an ambulatory basis has been used in several small series and has effectively prolonged gestation. This retrospective analysis presents data from 992 patients at very high risk for preterm delivery who were prescribed this therapy. The amount of tocolytic medication was individualized by utilizing the patient's volume of distribution and clearance. Pharmacists adjusted the dosage based on uterine activity strips received by nursing personnel. The average basal rate was .073 +/- .020 mg/h. Patients received an average of seven scheduled boluses per day and 1.54 +/- .93 unscheduled boluses per week (.25 +/- .03 mg each). The therapy extended the gestation a mean of 38 +/- 23 days and average gestational age at delivery was 36.3 +/- 2.6 weeks with a mean birthweight of 2759 +/- 681 g. This study, utilizing a large number of patients, confirms earlier reports that for women at very high risk for preterm delivery subcutaneous tocolytic infusion therapy is beneficial. Prospective studies evaluating such treatment on a randomized basis are indicated.
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Affiliation(s)
- J R Allbert
- Department of Obstetrics and Gynecology, University of Mississippi Medical Center, Jackson 39216-4505
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18
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Wise CA, Martin NC. Dramatic size variation of yeast mitochondrial RNAs suggests that RNase P RNAs can be quite small. J Biol Chem 1991; 266:19154-7. [PMID: 1918032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The gene coding for the AU-rich RNA required for mitochondrial RNase P activity in Saccharomyces cerevisiae codes for a 490-base RNA while that in Candida glabrata codes for a 227-base RNA. We have detected a 140-nucleotide RNA coded by the mitochondrial DNA from Saccharomycopsis fibuligera by hybridization with an oligonucleotide complementary to a conserved sequence found in mitochondrial and prokaryotic RNase P RNAs. DNA sequence analysis of the mitochondrial DNA from the region coding for this RNA revealed a second conserved sequence block characteristic of RNase P RNA genes and the presence of a downstream tRNA(Pro) gene. Like previously characterized mitochondrial RNase P RNAs, this small RNA is extremely AU-rich. The discovery of this 140-base RNA suggests that naturally occurring RNase P RNAs may be quite small.
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Affiliation(s)
- C A Wise
- Department of Biochemistry, University of Texas Southewestern Graduate School, Dallas 75235
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19
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Cook TM, Rosecrance JC, Brokman SJ, Rulon AS, Wise CA. Reliability of a digital electroneurometer for the determination of motor latency of the median nerve. J Occup Rehabil 1991; 1:105-112. [PMID: 24242369 DOI: 10.1007/bf01073381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Measurement of distal motor latencies of the median nerve are often part of electrodiagnostic studies used to verify a diagnosis of peripheral neuropathy. Since electrodiagnostic studies are time consuming, expensive, and impractical for large-scale screening of at-risk individuals, a portable digital electroneurometer was developed for measuring motor latencies as a screening tool for early detection of nerve compression syndromes, including carpal tunnel syndrome. The purpose of this study was to determine the intertester and intratester reliability of a digital electroneurometer in subjects with (n=12) and without (n=20) clinical signs of carpal tunnel syndrome. This study addressed only the reliability and not the validity of this device. Using a repeated measures design, three evaluators performed two distal motor latency tests on the median nerve of each of the subjects. Pearson product-moment correlations for intratester reliability ranged from 0.94 to 0.99, and the intraclass correlation coefficient for intertester reliability was 0.96. Two examiners obtained statistically larger latency values on the second test, although these differences are judged to be clinically insignificant. Use of an electroneurometer may expand motor latency testing to a wider variety of settings.
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Affiliation(s)
- T M Cook
- Physical Therapy Graduate Program, The University of Iowa, 2633 Steindler Building, 52242, Iowa City, Iowa
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20
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Shu HH, Wise CA, Clark-Walker GD, Martin NC. A gene required for RNase P activity in Candida (Torulopsis) glabrata mitochondria codes for a 227-nucleotide RNA with homology to bacterial RNase P RNA. Mol Cell Biol 1991; 11:1662-7. [PMID: 1705011 PMCID: PMC369466 DOI: 10.1128/mcb.11.3.1662-1667.1991] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
We have mapped a gene in the mitochondrial DNA of Candida (Torulopsis) glabrata and shown that it is required for 5' end maturation of mitochondrial tRNAs. It is located between the tRNAfMet and tRNAPro genes, the same tRNA genes that flank the mitochondrial RNase P RNA gene in the yeast Saccharomyces cerevisiae. The gene is extremely AT rich and codes for AU-rich RNAs that display some sequence homology with the mitochondrial RNase P RNA from S. cerevisiae, including two regions of striking sequence homology between the mitochondrial RNAs and the bacterial RNase P RNAs. RNase P activity that is sensitive to micrococcal nuclease has been detected in mitochondrial extracts of C. glabrata. An RNA of 227 nucleotides that is one of the RNAs encoded by the gene that we mapped cofractionated with this mitochondrial RNase P activity on glycerol gradients. The nuclease sensitivity of the activity, the cofractionation of the RNA with activity, and the homology of the RNA with known RNase P RNAs lead us to propose that the 227-nucleotide RNA is the RNA subunit of the C. glabrata mitochondrial RNase P enzyme.
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Affiliation(s)
- H H Shu
- Department of Biochemistry, School of Medicine, University of Louisville, Kentucky 40292
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Morales MJ, Wise CA, Hollingsworth MJ, Martin NC. Characterization of yeast mitochondrial RNase P: an intact RNA subunit is not essential for activity in vitro. Nucleic Acids Res 1989; 17:6865-81. [PMID: 2476723 PMCID: PMC318418 DOI: 10.1093/nar/17.17.6865] [Citation(s) in RCA: 68] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
We have previously described a mitochondrial activity that removes 5' leaders from yeast mitochondrial precursor tRNAs and suggested that it is a mitochondrial RNase P. Here we demonstrate that the cleavage reaction results in a 5' phosphate on the tRNA product and thus the activity is analogous to that of other RNase Ps. A mitochondrial gene called the tRNA synthesis locus encodes an A + U-rich RNA required for this activity in vivo. Two regions of this RNA display sequence similarity to conserved sequences in bacterial RNase P RNAs. This sequence similarity coupled with the analogous activities of the enzymes has led us to conclude that the RNAs are homologous and that the tRNA synthesis locus does code for the mitochondrial RNase P RNA subunit. The smallest and most abundant transcript of the tRNA synthesis locus is 490 nucleotides long. However, during purification of the holoenzyme, RNA is degraded and pieces of the original RNA are sufficient to support RNase P activity in vitro.
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Affiliation(s)
- M J Morales
- Department of Biochemistry, University of Louisville School of Medicine, KY 40292
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Sheets JJ, Mason JI, Wise CA, Estabrook RW. Inhibition of rat liver microsomal cytochrome P-450 steroid hydroxylase reactions by imidazole antimycotic agents. Biochem Pharmacol 1986; 35:487-91. [PMID: 3947383 DOI: 10.1016/0006-2952(86)90224-8] [Citation(s) in RCA: 77] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The imidazole antimycotic agents ketoconazole, miconazole and clotrimazole were tested for their abilities to inhibit the reactions involved in the oxidative metabolism of androst-4-ene-3,17-dione by rat liver microsomal cytochromes P-450. All three compounds were found to function as potent inhibitors of steroid hydroxylase reactions, producing 50% inhibition of 6 beta-, 16 beta-, and 16 alpha-hydroxylase activities at concentrations between 10(-7) and 10(-5) M. The antimycotic agents, when added to liver microsomes, bound to cytochrome P-450 with high affinity to produce a "type II" spectral complex. These agents showed differential inhibition of the various steroid hydroxylases and were found not to affect the activities of the liver microsomal steroid 5 alpha-reductase or the androst-4-ene-3,17-dione 17-oxidoreductase. The results presented demonstrate an interaction of these imidazole antimycotic agents with the various cytochromes P-450 of liver microsomes, resulting in selective inhibition of monooxygenase activity.
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Wise CA. The supervisory alliance in pastoral psychotherapy. J Pastoral Care 1977; 31:186-93. [PMID: 10305558 DOI: 10.1177/002234097703100307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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