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Wolk A, Upadhyay M, Ali M, Suh J, Stoehr H, Bonilha VL, Anand-Apte B. The retinal pigment epithelium in Sorsby Fundus Dystrophy shows increased sensitivity to oxidative stress-induced degeneration. Redox Biol 2020; 37:101681. [PMID: 32828705 PMCID: PMC7767753 DOI: 10.1016/j.redox.2020.101681] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 07/27/2020] [Accepted: 08/05/2020] [Indexed: 12/21/2022] Open
Abstract
Sorsby Fundus Dystrophy (SFD) is a rare inherited autosomal dominant macular degeneration caused by specific mutations in TIMP3. Patients with SFD present with pathophysiology similar to the more common Age-related Macular Degeneration (AMD) and loss of vision due to both choroidal neovascularization and geographic atrophy. Previously, it has been shown that RPE degeneration in AMD is due in part to oxidative stress. We hypothesized that similar mechanisms may be at play in SFD. The objective of this study was to evaluate whether mice carrying the S179C-Timp3 mutation, a variant commonly observed in SFD, showed increased sensitivity to oxidative stress. Antioxidant genes are increased at baseline in the RPE in SFD mouse models, but not in the retina. This suggests the presence of a pro-oxidant environment in the RPE in the presence of Timp3 mutations. To determine if the RPE of Timp3 mutant mice is more susceptible to degeneration when exposed to low levels of oxidative stress, mice were injected with low doses of sodium iodate. The RPE and photoreceptors in Timp3 mutant mice degenerated at low doses of sodium iodate, which had no effect in wildtype control mice. These studies suggest that TIMP3 mutations may result in a dysregulation of pro-oxidant-antioxidant homeostasis in the RPE, leading to RPE degeneration in SFD.
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Affiliation(s)
- Alyson Wolk
- Department of Ophthalmic Research, Cole Eye Institute & Lerner Research Institute, Cleveland Clinic Foundation, 9500 Euclid Ave, Cleveland, OH, 44195, USA; Cleveland Clinic Lerner College of Medicine, Dept. of Molecular Medicine, Case Western Reserve University, 10900 Euclid Ave, Cleveland, OH, 44106, USA
| | - Mala Upadhyay
- Department of Ophthalmic Research, Cole Eye Institute & Lerner Research Institute, Cleveland Clinic Foundation, 9500 Euclid Ave, Cleveland, OH, 44195, USA
| | - Mariya Ali
- Department of Ophthalmic Research, Cole Eye Institute & Lerner Research Institute, Cleveland Clinic Foundation, 9500 Euclid Ave, Cleveland, OH, 44195, USA
| | - Jason Suh
- Department of Ophthalmic Research, Cole Eye Institute & Lerner Research Institute, Cleveland Clinic Foundation, 9500 Euclid Ave, Cleveland, OH, 44195, USA
| | - Heidi Stoehr
- Institute of Human Genetics, University of Regensburg, 31 Universitätsstraße, Regensburg, 93053, Germany
| | - Vera L Bonilha
- Department of Ophthalmic Research, Cole Eye Institute & Lerner Research Institute, Cleveland Clinic Foundation, 9500 Euclid Ave, Cleveland, OH, 44195, USA; Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Dept. of Ophthalmology, 10900 Euclid Ave, Cleveland, OH, 44106, USA
| | - Bela Anand-Apte
- Department of Ophthalmic Research, Cole Eye Institute & Lerner Research Institute, Cleveland Clinic Foundation, 9500 Euclid Ave, Cleveland, OH, 44195, USA; Cleveland Clinic Lerner College of Medicine, Dept. of Molecular Medicine, Case Western Reserve University, 10900 Euclid Ave, Cleveland, OH, 44106, USA; Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Dept. of Ophthalmology, 10900 Euclid Ave, Cleveland, OH, 44106, USA.
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Wolk A, Hatipoglu D, Cutler A, Ali M, Bell L, Hua Qi J, Singh R, Batoki J, Karle L, Bonilha VL, Wessely O, Stoehr H, Hascall V, Anand-Apte B. Role of FGF and Hyaluronan in Choroidal Neovascularization in Sorsby Fundus Dystrophy. Cells 2020; 9:E608. [PMID: 32143276 PMCID: PMC7140456 DOI: 10.3390/cells9030608] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 02/11/2020] [Accepted: 02/28/2020] [Indexed: 12/21/2022] Open
Abstract
Sorsby's fundus dystrophy (SFD) is an inherited blinding disorder caused by mutations in the tissue inhibitor of metalloproteinase-3 (TIMP3) gene. The SFD pathology of macular degeneration with subretinal deposits and choroidal neovascularization (CNV) closely resembles that of the more common age-related macular degeneration (AMD). The objective of this study was to gain further insight into the molecular mechanism(s) by which mutant TIMP3 induces CNV. In this study we demonstrate that hyaluronan (HA), a large glycosaminoglycan, is elevated in the plasma and retinal pigment epithelium (RPE)/choroid of patients with AMD. Mice carrying the S179C-TIMP3 mutation also showed increased plasma levels of HA as well as accumulation of HA around the RPE in the retina. Human RPE cells expressing the S179C-TIMP3 mutation accumulated HA apically, intracellularly and basally when cultured long-term compared with cells expressing wildtype TIMP3. We recently reported that RPE cells carrying the S179C-TIMP3 mutation have the propensity to induce angiogenesis via basic fibroblast growth factor (FGF-2). We now demonstrate that FGF-2 induces accumulation of HA in RPE cells. These results suggest that the TIMP3-MMP-FGF-2-HA axis may have an important role in the pathogenesis of CNV in SFD and possibly AMD.
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Affiliation(s)
- Alyson Wolk
- Cole Eye Institute & Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA; (A.W.); (D.H.); (A.C.); (M.A.); (L.B.); (J.H.Q.); (R.S.); (J.B.); (L.K.); (V.L.B.)
- Cleveland Clinic Lerner College of Medicine, Department of Molecular Medicine, Case Western Reserve University, Cleveland, OH 44195, USA;
| | - Dilara Hatipoglu
- Cole Eye Institute & Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA; (A.W.); (D.H.); (A.C.); (M.A.); (L.B.); (J.H.Q.); (R.S.); (J.B.); (L.K.); (V.L.B.)
| | - Alecia Cutler
- Cole Eye Institute & Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA; (A.W.); (D.H.); (A.C.); (M.A.); (L.B.); (J.H.Q.); (R.S.); (J.B.); (L.K.); (V.L.B.)
| | - Mariya Ali
- Cole Eye Institute & Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA; (A.W.); (D.H.); (A.C.); (M.A.); (L.B.); (J.H.Q.); (R.S.); (J.B.); (L.K.); (V.L.B.)
| | - Lestella Bell
- Cole Eye Institute & Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA; (A.W.); (D.H.); (A.C.); (M.A.); (L.B.); (J.H.Q.); (R.S.); (J.B.); (L.K.); (V.L.B.)
- Cleveland Clinic Lerner College of Medicine at Case Western Reserve University, Department of Ophthalmology, Cleveland, OH 44195, USA
| | - Jian Hua Qi
- Cole Eye Institute & Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA; (A.W.); (D.H.); (A.C.); (M.A.); (L.B.); (J.H.Q.); (R.S.); (J.B.); (L.K.); (V.L.B.)
| | - Rupesh Singh
- Cole Eye Institute & Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA; (A.W.); (D.H.); (A.C.); (M.A.); (L.B.); (J.H.Q.); (R.S.); (J.B.); (L.K.); (V.L.B.)
| | - Julia Batoki
- Cole Eye Institute & Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA; (A.W.); (D.H.); (A.C.); (M.A.); (L.B.); (J.H.Q.); (R.S.); (J.B.); (L.K.); (V.L.B.)
| | - Laura Karle
- Cole Eye Institute & Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA; (A.W.); (D.H.); (A.C.); (M.A.); (L.B.); (J.H.Q.); (R.S.); (J.B.); (L.K.); (V.L.B.)
| | - Vera L. Bonilha
- Cole Eye Institute & Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA; (A.W.); (D.H.); (A.C.); (M.A.); (L.B.); (J.H.Q.); (R.S.); (J.B.); (L.K.); (V.L.B.)
- Cleveland Clinic Lerner College of Medicine, Department of Molecular Medicine, Case Western Reserve University, Cleveland, OH 44195, USA;
- Cleveland Clinic Lerner College of Medicine at Case Western Reserve University, Department of Ophthalmology, Cleveland, OH 44195, USA
| | - Oliver Wessely
- Cleveland Clinic Lerner College of Medicine, Department of Molecular Medicine, Case Western Reserve University, Cleveland, OH 44195, USA;
- Department of Cardiovascular and Metabolic Sciences, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA
| | - Heidi Stoehr
- Institute of Human Genetics, University of Regensburg, 93053 Regensburg, Germany;
| | - Vincent Hascall
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA;
| | - Bela Anand-Apte
- Cole Eye Institute & Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA; (A.W.); (D.H.); (A.C.); (M.A.); (L.B.); (J.H.Q.); (R.S.); (J.B.); (L.K.); (V.L.B.)
- Cleveland Clinic Lerner College of Medicine, Department of Molecular Medicine, Case Western Reserve University, Cleveland, OH 44195, USA;
- Cleveland Clinic Lerner College of Medicine at Case Western Reserve University, Department of Ophthalmology, Cleveland, OH 44195, USA
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Qi JH, Bell B, Singh R, Batoki J, Wolk A, Cutler A, Prayson N, Ali M, Stoehr H, Anand-Apte B. Sorsby Fundus Dystrophy Mutation in Tissue Inhibitor of Metalloproteinase 3 (TIMP3) promotes Choroidal Neovascularization via a Fibroblast Growth Factor-dependent Mechanism. Sci Rep 2019; 9:17429. [PMID: 31757977 PMCID: PMC6874529 DOI: 10.1038/s41598-019-53433-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 11/01/2019] [Indexed: 12/11/2022] Open
Abstract
Choroidal neovascularization (CNV) leads to loss of vision in patients with Sorsby Fundus Dystrophy (SFD), an inherited, macular degenerative disorder, caused by mutations in the Tissue Inhibitor of Metalloproteinase-3 (TIMP3) gene. SFD closely resembles age-related macular degeneration (AMD), which is the leading cause of blindness in the elderly population of the Western hemisphere. Variants in TIMP3 gene have recently been identified in patients with AMD. A majority of patients with AMD also lose vision as a consequence of choroidal neovascularization (CNV). Thus, understanding the molecular mechanisms that contribute to CNV as a consequence of TIMP-3 mutations will provide insight into the pathophysiology in SFD and likely the neovascular component of the more commonly seen AMD. While the role of VEGF in CNV has been studied extensively, it is becoming increasingly clear that other factors likely play a significant role. The objective of this study was to test the hypothesis that basic Fibroblast Growth Factor (bFGF) regulates SFD-related CNV. In this study we demonstrate that mice expressing mutant TIMP3 (Timp3S179C/S179C) showed reduced MMP inhibitory activity with an increase in MMP2 activity and bFGF levels, as well as accentuated CNV leakage when subjected to laser injury. S179C mutant-TIMP3 in retinal pigment epithelial (RPE) cells showed increased secretion of bFGF and conditioned medium from these cells induced increased angiogenesis in endothelial cells. These studies suggest that S179C-TIMP3 may promote angiogenesis and CNV via a FGFR-1-dependent pathway by increasing bFGF release and activity.
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Affiliation(s)
- Jian Hua Qi
- Department of Ophthalmology, Cleveland Clinic Lerner College of Medicine, Cole Eye Institute, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Brent Bell
- Department of Ophthalmology, Cleveland Clinic Lerner College of Medicine, Cole Eye Institute, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Rupesh Singh
- Department of Ophthalmology, Cleveland Clinic Lerner College of Medicine, Cole Eye Institute, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Julia Batoki
- Department of Ophthalmology, Cleveland Clinic Lerner College of Medicine, Cole Eye Institute, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Alyson Wolk
- Department of Ophthalmology, Cleveland Clinic Lerner College of Medicine, Cole Eye Institute, Cleveland Clinic Foundation, Cleveland, OH, USA
- Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Alecia Cutler
- Department of Ophthalmology, Cleveland Clinic Lerner College of Medicine, Cole Eye Institute, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Nicholas Prayson
- Department of Ophthalmology, Cleveland Clinic Lerner College of Medicine, Cole Eye Institute, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Mariya Ali
- Department of Ophthalmology, Cleveland Clinic Lerner College of Medicine, Cole Eye Institute, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Heidi Stoehr
- Institute of Human Genetics, University of Regensburg, Regensburg, Germany
| | - Bela Anand-Apte
- Department of Ophthalmology, Cleveland Clinic Lerner College of Medicine, Cole Eye Institute, Cleveland Clinic Foundation, Cleveland, OH, USA.
- Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine, Cleveland Clinic Foundation, Cleveland, OH, USA.
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Karlstetter M, Sorusch N, Caramoy A, Dannhausen K, Aslanidis A, Fauser S, Boesl MR, Nagel-Wolfrum K, Tamm ER, Jägle H, Stoehr H, Wolfrum U, Langmann T. Disruption of the retinitis pigmentosa 28 gene Fam161a in mice affects photoreceptor ciliary structure and leads to progressive retinal degeneration. Hum Mol Genet 2014; 23:5197-210. [DOI: 10.1093/hmg/ddu242] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
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Abstract
We report an ultranarrow-linewidth laser spectrometer at 657 nm, consisting of a diode laser locked in a single stage to a stable high-finesse reference cavity. The system is characterized by comparison with a second independent system. From beat frequency measurements a linewidth below 1.5 Hz (FWHM) and a fractional instability of less than 2 x 10(-15) for 1 s of averaging time are observed.
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Affiliation(s)
- H Stoehr
- Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany
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Abstract
Willet M. Hays was a great benefactor to plant breeding and the founder of the American Genetic Association (AGA). We commemorate the AGA's centennial. We mined university archives, U.S. Department of Agriculture (USDA) yearbooks, plant breeding textbooks, scientific periodicals, and descendants for information. Willet Hays first recognized the individual plant as the unit of selection and started systematic pure-line selection and progeny tests in 1888. He developed useful plant breeding methods. He selected superior flax (Linum usitatissimum L.), wheat (Triticum vulgare L.), corn (Zea mays L.), barley (Hordeum vulgare L.), and oat (Avena sativa L.) varieties, and discovered Grimm alfalfa (Medicago sativa L.); all became commercially important. He initiated branch stations for better performance testing. Willet Hays befriended colleagues in other universities, in federal stations, in a London conference, and in Europe. He gathered and spread the scientific plant breeding gospel. He also improved rural roads and initiated animal breeding records and agricultural economics records. He started the AGA in 1903, serving as secretary for 10 years. He became assistant secretary of agriculture in 1904. He introduced the project system for agricultural research. He authored or coauthored the Nelson Amendment, the Smith-Lever Act, the Smith-Hughes Act, and the protocol leading to the United Nations Food and Agriculture Organization-all involved teaching agricultural practices that improved the world.
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Affiliation(s)
- A F Troyer
- Department of Crop Sciences, University of Illinois, 1102 South Goodwin Ave., Urbana, IL, USA.
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Schulz HL, Stoehr H, White K, van Driel MA, Hoyng CB, Cremers F, Weber BHF. Genomic structure and assessment of the retinally expressed RFamide-related peptide gene in dominant cystoid macular dystrophy. Mol Vis 2002; 8:67-71. [PMID: 11951088] [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: 02/24/2023] Open
Abstract
PURPOSE Computer-assisted sampling of EST data contained within the UniGene human sequences collection is being used to establish a catalog of novel genes that are expressed exclusively or predominantly in the human retina. This provides a valuable source for candidate genes possibly involved in retinal degeneration. In this report we present the characterization of the C7orf9 gene locus encoding RFamide-related peptides (RFRPs) and its evaluation in dominant cystoid macular dystrophy (CYMD). METHODS Bioinformatics and cDNA library screening were used to isolate the full-length cDNA sequence and to determine the genomic organization of C7orf9. Expression profiling was done by RT-PCR and Northern blot analysis. C7orf9 was evaluated as a candidate gene for CYMD by DNA sequencing and Southern blot analysis in two affected individuals from an extended Dutch CYMD family. RESULTS The C7orf9 cDNA transcript consists of 1190 bp and is organized into 3 exons on the short arm of chromosome 7 within the critical region for CYMD. The transcript is specifically expressed in the retina but not in a large range of other human tissues. No disease-causing mutations or larger gene rearrangements were found. CONCLUSIONS We provide the genomic organization of the RFamide-related peptide gene, C7orf9, which encodes a precursor protein for at least two small neuropeptides, referred to as NPSF (alias RFRP-1) and NPVF (alias RFRP-3) and show that it is abundantly expressed in the human retina. Results of our comprehensive mutation analysis suggests that C7orf9 is not the CYMD gene.
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Affiliation(s)
- Heidi L Schulz
- Institut für Humangenetik, Universität Würzburg, D-97074 Würzburg, Germany
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Mah N, Stoehr H, Schulz HL, White K, Weber BH. Identification of a novel retina-specific gene located in a subtelomeric region with polymorphic distribution among multiple human chromosomes. Biochim Biophys Acta 2001; 1522:167-74. [PMID: 11779631 DOI: 10.1016/s0167-4781(01)00328-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The human retina is comprised of a large number of cell types with highly specialized functions that depend on the action of countless genes, many of which are exclusively expressed in the retina. We have isolated a novel retinal gene, termed F379. The transcript was initially identified as a cluster of ESTs derived predominantly from retinal cDNA libraries and its retinal transcription confirmed by Northern blot and RT-PCR. Screening of retinal cDNA libraries yielded four clones that were assembled into a 1188 bp consensus sequence. The putative open reading frame includes an unusual configuration of Alu and MIR repeats and encodes a putative 85 aa peptide with no significant homology to any known protein sequence outside of the Alu and MIR elements. Comparison with genomic sequence determined that F379 consists of three exons and maps to multiple locations throughout the genome, a finding confirmed by PCR screening of a somatic cell hybrid mapping panel. F379 appears to be contained within a region of subtelomeric DNA that is duplicated in a polymorphic distribution to multiple chromosomes. Comparison of interchromosomal sequence variation with the sequences of expressed transcripts suggests that the gene is transcribed in the human retina from at least four different chromosomes.
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Affiliation(s)
- N Mah
- Institut fuer Humangenetik, Biozentrum, Universitaet Wuerzburg, D-97074, Wuerzburg, Germany
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Cooper PR, Nowak NJ, Higgins MJ, Simpson SA, Marquardt A, Stoehr H, Weber BH, Gerhard DS, de Jong PJ, Shows TB. A sequence-ready high-resolution physical map of the best macular dystrophy gene region in 11q12-q13. Genomics 1997; 41:185-92. [PMID: 9143493 DOI: 10.1006/geno.1997.4660] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [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]
Abstract
Best disease, an autosomal dominant inherited macular degenerative disorder, was previously localized between D11S1765 and UGB (uteroglobin) in 11q13 by genetic linkage analysis. Since this region was found to be refractory to cloning in YAC (yeast artificial chromosome)-based vectors, a P1 artificial chromosome (PAC) contig was assembled. Gridded PAC libraries representing a 16-fold genome equivalent were screened by hybridization using PCR products representing STSs derived from YAC end sequences, markers binned to 11q13, and PAC-derived insert ends. A highly marker dense approximately 1.7-Mb PAC contig that encompassed the disease gene region was constructed, allowing us to order accurately the markers throughout the region and to provide the most precise estimate of its physical size. Using this contig, thus far we have mapped seven anonymous ESTs and five known genes into this region. This high-resolution physical map will facilitate the isolation of polymorphic markers for refinement of the disease gene region, as well as the identification of candidate genes by exon trapping, cDNA selection, and gene prediction from PAC-derived genomic sequence.
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Affiliation(s)
- P R Cooper
- Department of Human Genetics, Roswell Park Cancer Institute, Buffalo, New York 14263, USA
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