1
|
Zhao L, Sebkhi A, Nunez DJ, Long L, Haley CS, Szpirer J, Szpirer C, Williams AJ, Wilkins MR. Right ventricular hypertrophy secondary to pulmonary hypertension is linked to rat chromosome 17: evaluation of cardiac ryanodine Ryr2 receptor as a candidate. Circulation 2001; 103:442-7. [PMID: 11157698 DOI: 10.1161/01.cir.103.3.442] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Fischer 344 (F344) rats are relatively resistant to hypoxia-induced right ventricular (RV) hypertrophy compared with the Wistar-Kyoto (WKY) strain. These 2 strains were used to examine the genetic basis for the differential response. METHODS AND RESULTS Male F(2) offspring from an F344xWKY intercross were exposed to hypoxia (10% O(2)) for 3 weeks, and pulmonary artery pressure and cardiac chamber weights were measured. Genomic DNA was screened by use of polymorphic microsatellite markers across the whole genome (excluding the sex chromosomes). A quantitative trait locus (QTL) for RV weight was identified on rat chromosome 17 (lod score 6.5) that accounted for 22% of the total variance of RV weight in the F(2) population and was independent of pulmonary artery pressure. The peak was centered over marker D17Rat41, close to Chrm3, with a 1-lod support interval of 5 cM. Comparison of homologous regions in mice and humans suggested that Ryr2, the cardiac isoform of the ryanodine receptor, colocalizes with our QTL. A panel of somatic cell hybrids and fluorescence in situ hybridization mapped Ryr2 close to the gene Chrm3 within our QTL. [(3)H]Ryanodine binding to cardiac membranes from the parental strains showed a 21% reduction in B(max) in the WKY compared with the F344 strain, with no difference in K:(d). CONCLUSIONS These data provide the first demonstration of a QTL linked to the RV response to hypoxia-induced pulmonary hypertension. The Ryr2 receptor gene lies within this QTL and merits further investigation as a candidate for this differential RV response.
Collapse
MESH Headings
- Animals
- Body Weight
- Chromosomes, Human, Pair 17
- Crosses, Genetic
- Genetic Linkage
- Humans
- Hypertension, Pulmonary/complications
- Hypertension, Pulmonary/etiology
- Hypertension, Pulmonary/genetics
- Hypertrophy, Right Ventricular/complications
- Hypertrophy, Right Ventricular/genetics
- Hypoxia
- In Situ Hybridization, Fluorescence
- Male
- Myocardium/metabolism
- Organ Size
- Phenotype
- Quantitative Trait, Heritable
- Radioligand Assay
- Rats
- Rats, Inbred F344
- Rats, Inbred WKY
- Ryanodine Receptor Calcium Release Channel/genetics
- Ryanodine Receptor Calcium Release Channel/metabolism
Collapse
Affiliation(s)
- L Zhao
- Section on Clinical Pharmacology, National Heart and Lung Institute, Imperial College School of Science, Technology, and Medicine, London, UK
| | | | | | | | | | | | | | | | | |
Collapse
|
2
|
van Lith H, den Bieman M, Levan G, Matsumoto K, Szpirer C, van Zupthen L. Report on rat chromosome 16. ACTA ACUST UNITED AC 1999. [DOI: 10.1016/s0939-8600(99)80017-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
3
|
Yeung RS, Buetow KH, Scherpbier-Heddema T, Bell DW, Testa JR. A genetic, physical, and comparative map of rat chromosome 10. Mamm Genome 1996; 7:425-8. [PMID: 8662224 DOI: 10.1007/s003359900126] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A map of rat Chromosome (Chr) 10 was generated from 21 markers, mostly of conserved structural genes, by linkage analysis and fluorescence in situ hybridization. The study emphasizes the proximal third of the chromosome which, until now, has been relatively devoid of markers. Based on comparative analysis, our data suggest that genes on rat Chr 10 are conserved on mouse Chr 11, 16, 17 and human Chr 16, 5, and 17.
Collapse
Affiliation(s)
- R S Yeung
- Division of Medical Sciences, Fox Chase Cancer Center, Philidelphia, Pennsylvania 19177, USA
| | | | | | | | | |
Collapse
|
4
|
Yeung RS, Bell DW, Testa JR. The Vpreb1 and comt genes are closely linked and sublocalized to rat chromosome 11q23. Mamm Genome 1996; 7:246-7. [PMID: 9162259 DOI: 10.1007/s003359900073] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- R S Yeung
- Division of Medical Sciences, Fox Chase Cancer Center, Philadelphia, Pennsylvania 19111, USA
| | | | | |
Collapse
|
5
|
Yeung RS, Xiao GH, Jin F, Lee WC, Testa JR, Knudson AG. Predisposition to renal carcinoma in the Eker rat is determined by germ-line mutation of the tuberous sclerosis 2 (TSC2) gene. Proc Natl Acad Sci U S A 1994; 91:11413-6. [PMID: 7972075 PMCID: PMC45241 DOI: 10.1073/pnas.91.24.11413] [Citation(s) in RCA: 231] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Genetic predisposition to neoplasia often involves tumor suppressor genes. One such model of hereditary renal carcinoma was described in the rat by Eker. These tumors share morphologic similarities with human renal cancer. Linkage analysis localized the inherited mutation to rat chromosome band 10q12. This region is syntenic with human chromosome band 16p13.3, the site of the tuberous sclerosis 2 (TSC2) gene. A specific rearrangement of the rat homologue of TSC2 was found to cosegregate with carriers of the predisposing mutation. Tumors with or without loss of heterozygosity expressed only the mutant allele, consistent with the two-hit hypothesis. This mutation gave rise to an aberrant transcript that deletes the 3' end normally containing a region of homology with the catalytic domain of rap1GAP.
Collapse
Affiliation(s)
- R S Yeung
- Division of Medical Science, Fox Chase Cancer Center, Philadelphia, PA 19111
| | | | | | | | | | | |
Collapse
|
6
|
Deng AY, Gu L, Rapp JP, Szpirer C, Szpirer J. Chromosomal assignment of 11 loci in the rat by mouse-rat somatic hybrids and linkage. Mamm Genome 1994; 5:712-6. [PMID: 7873882 DOI: 10.1007/bf00426078] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Eleven rat genes have been assigned to rat chromosomes by use of mouse x rat somatic hybrids and/or use of linkage to known chromosome markers. Among them, the genes for the inducible nitric oxide synthase (Nos2) and for a vasoactive intestinal peptide receptor (Vipr) are potential candidates for genetic regulation of blood pressure and were localized to rat Chromosomes (Chrs) 10 and 8 respectively. Genes for gastric H,K-ATPase alpha subunit (Atp4a), Class I alcohol dehydrogenase (Adh), and aldolase C (Aldoc) were localized to Chrs 1, 2, and 10 respectively, and thus provide more DNA markers for genetic mapping of quantitative trait loci for blood pressure on those chromosomes. Genes for alkaline phosphatase (Alp1) and cardiac AE-3 Cl-/HCO3- exchanger (Ae3) were both localized to Chr 9. Genes for glutamate dehydrogenase (Glud) and gastric H,K-ATPase beta subunit (Atp4b) were localized to Chr 16. The ornithine decarboxylase (Odc) gene and ornithine decarboxylase pseudogene (Odcp) were localized to Chrs 6 and 11 respectively.
Collapse
Affiliation(s)
- A Y Deng
- Department of Physiology and Molecular Medicine, Medical College of Ohio, Toledo 43699-0008
| | | | | | | | | |
Collapse
|
7
|
Szpirer C, Tissir F, Rivière M, Levan G, Szpirer J. Assignment of rat Jun family genes to chromosome 19 (Junb), chromosome 5q31-33 (Jun), and chromosome 16 (Jund). Mamm Genome 1994; 5:361-4. [PMID: 8043951 DOI: 10.1007/bf00356555] [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: 01/28/2023]
Abstract
By means of somatic cell hybrids segregating rat chromosomes, we determined the chromosome localization of three rat genes of the Jun family: Junb (Chr 19), Jun (=c-Jun) (Chr 5) and Jund (Chr 16). The Jun gene was also localized to the 5q31-33 region by fluorescence in situ hybridization. These rat gene assignments reveal two new homologies with mouse and human chromosomes, and provide a new example of synteny conserved in the human and a rodent species (the mouse), but split between the two rodent species.
Collapse
Affiliation(s)
- C Szpirer
- Université Libre de Bruxelles, Département de Biologie Moléculaire, Rhode-St-Genèse, Belgium
| | | | | | | | | |
Collapse
|
8
|
Yamada J, Kuramoto T, Serikawa T. A rat genetic linkage map and comparative maps for mouse or human homologous rat genes. Mamm Genome 1994; 5:63-83. [PMID: 8180477 PMCID: PMC7087631 DOI: 10.1007/bf00292332] [Citation(s) in RCA: 157] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/1993] [Accepted: 10/13/1993] [Indexed: 01/29/2023]
Affiliation(s)
- J Yamada
- Institute of Laboratory Animals, Faculty of Medicine, Kyoto University, Japan
| | | | | |
Collapse
|
9
|
Yeung RS, Hino O, Vilensky M, Buetow K, Szpirer C, Szpirer J, Klinga-Levan K, Levan G, Knudson AG. Assignment of 22 loci in the rat by somatic hybrid and linkage analysis. Mamm Genome 1993; 4:585-8. [PMID: 8268657 DOI: 10.1007/bf00361389] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Twenty structural genes and two unique anonymous DNA fragments have been mapped in the rat (Rattus norvegicus) with a panel of mouse x rat hybrids and linkage analysis. Ten of the 20 autosomes are represented by at least one of these markers. A new syntenic relationship among rat Chromosome (Chr) 16, mouse Chr 14, and human Chr 10q was established. Results of this study further support the extensive conservation of synteny between the rat and mouse and, to a lesser degree, between rat and human.
Collapse
Affiliation(s)
- R S Yeung
- Fox Chase Cancer Center, Department of Surgical Oncology, Philadelphia, Pennsylvania 19111
| | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Yeung RS, Buetow KH, Testa JR, Knudson AG. Susceptibility to renal carcinoma in the Eker rat involves a tumor suppressor gene on chromosome 10. Proc Natl Acad Sci U S A 1993; 90:8038-42. [PMID: 8103600 PMCID: PMC47283 DOI: 10.1073/pnas.90.17.8038] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Germ-line mutations of tumor suppressor genes confer strong predisposition to tumor formation. In the rat, a form of dominantly inherited renal carcinoma (RC) results in multiple chromophobe cell tumors that resemble the human disease, and heterozygous carriers (RC/+) are highly susceptible to environmental agents (radiation and chemical carcinogens), making it a desirable model to study epithelial carcinogenesis. By linkage analysis, the locus of the inherited RC mutation was mapped to rat chromosomal band 10q12, near the protamine locus (logarithm of odds score = 17.96). Renal tumors also showed a loss of heterozygosity at this locus, lending support to the recessive nature of this putative tumor suppressor gene. Our result suggested that the human homolog of the RC gene may reside on human chromosome 16, not known to be altered commonly in human RC.
Collapse
Affiliation(s)
- R S Yeung
- Division of Medical Science, Fox Chase Cancer Center, Philadelphia, PA 19111
| | | | | | | |
Collapse
|
11
|
Makris A, Patriotis C, Bear SE, Tsichlis PN. Genomic organization and expression of Tpl-2 in normal cells and Moloney murine leukemia virus-induced rat T-cell lymphomas: activation by provirus insertion. J Virol 1993; 67:4283-9. [PMID: 8510223 PMCID: PMC237798 DOI: 10.1128/jvi.67.7.4283-4289.1993] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Tpl-2 is a gene encoding a protein kinase which is primarily expressed in normal spleen, thymus, and lung tissue and is activated by provirus insertion in Moloney murine leukemia virus-induced T-cell lymphomas during the late stages of oncogenesis. Tpl-2 is composed of eight exons and spans a 35-kb genomic DNA region. The provirus integrates reproducibly in the last intron and in the same transcriptional orientation as the Tpl-2 gene. This genetic change leads to the expression of enhanced steady-state levels of a truncated Tpl-2 RNA transcript which is predicted to encode a protein with an altered C-terminal domain. Tpl-2 is transcribed from two alternating promoters, P1 and P2. The RNA transcripts originating in the two promoters harbor different 5' untranslated regions derived from the alternate noncoding exons IA and IB. Utilization of the P2 promoter, which gives rise to exon IB containing Tpl-2 RNA transcripts, was detected primarily in tumor cells. The Tpl-2 protein was expressed in COS-1 cells as an N-terminal fusion with a 12-amino-acid hemagglutinin tag. Immunoprecipitation of transfected COS-1 cell lysates with antihemagglutinin or anti-Tpl-2 antibodies, followed by incubation with [gamma-32P]ATP, confirmed that Tpl-2 possesses protein kinase activity.
Collapse
Affiliation(s)
- A Makris
- Fox Chase Cancer Center, Philadelphia, Pennsylvania 19111
| | | | | | | |
Collapse
|
12
|
Vassort C, Rivière M, Bruneau G, Gros F, Thibault J, Levan G, Szpirer J, Szpirer C. Assignment of the rat genes coding for dopa decarboxylase (DDC) and glutamic acid decarboxylases (GAD1 and GAD2). Mamm Genome 1993; 4:202-6. [PMID: 8499653 DOI: 10.1007/bf00417563] [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
By use of rat cDNA probes and a panel of cell hybrids segregating rat chromosomes, the genes encoding three pyridoxal 5'-phosphate (PLP)-dependent decarboxylases--namely, DOPA-decarboxylase (Ddc), glutamic acid decarboxylase 1 and 2 (Gad1 and Gad2)--were assigned to rat Chromosomes (Chrs) 14, 3, and 17, respectively. If one takes into account chromosome localizations in the human and the mouse, the present results (i) show that a synteny group is retained on rat Chr 14, human Chr 7, and mouse Chr 11 (Ddc); (ii) strengthen the homology relation known between rat Chr 3 and human and mouse Chrs 2 (Gad1); (iii) suggest that rat Chr 17 has no extensive homology to any human chromosome; and (iv) suggest the order (Prl, Fdp)--Tpl2--Gad2 on the rat Chr 17.
Collapse
Affiliation(s)
- C Vassort
- Laboratoire de Biocheimie Cellulaire, Collège de France, Paris
| | | | | | | | | | | | | | | |
Collapse
|
13
|
Wevrick R, Barker JE, Nadeau JH, Szpirer C, Buchwald M. Mapping of the murine and rat Facc genes and assessment of flexed-tail as a candidate mouse homolog of Fanconi anemia group C. Mamm Genome 1993; 4:440-4. [PMID: 7690622 DOI: 10.1007/bf00296818] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Fanconi anemia is a rare, autosomal recessive disorder characterized at the cellular level by a combination of hypersensitivity to DNA-damaging agents and chromosomal instability. Clinical features include pancytopenia, often associated with specific congenital malformations, and a predisposition to leukemia. We previously cloned the gene defective in Fanconi anemia group C by complementation of the intrinsic sensitivity of Fanconi anemia cells to DNA cross-linking agents, and we recently cloned its mouse homolog (Facc). In this report, we localized Facc to mouse Chromosome (Chr) 13 and its rat homolog to rat Chr 17. A previously described anemic mouse mutant, flexed-tail, maps to the same chromosomal region. Differences were detected between DNA of the flexed-tail and congenic mice, indicating the proximity of the Facc probe to the disease mutation. Analysis of flexed-tail RNA did not reveal detectable difference in Facc message level or size between flexed-tail and congenic mice. On this basis, we conclude that, although flexed-tail remains a candidate for Fanconi anemia in the mouse, there is no evidence currently that Facc is mutated in flexed-tail mice.
Collapse
Affiliation(s)
- R Wevrick
- Department of Genetics, Hospital for Sick Children, Toronto, Ontario, Canada
| | | | | | | | | |
Collapse
|