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Kwon S, Safer J, Nguyen DT, Hoksza D, May P, Arbesfeld JA, Rubin AF, Campbell AJ, Burgin A, Iqbal S. Genomics 2 Proteins portal: A resource and discovery tool for linking genetic screening outputs to protein sequences and structures. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.02.573913. [PMID: 38260256 PMCID: PMC10802383 DOI: 10.1101/2024.01.02.573913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
Recent advances in AI-based methods have revolutionized the field of structural biology. Concomitantly, high-throughput sequencing and functional genomics technologies have enabled the detection and generation of variants at an unprecedented scale. However, efficient tools and resources are needed to link these two disparate data types - to "map" variants onto protein structures, to better understand how the variation causes disease and thereby design therapeutics. Here we present the Genomics 2 Proteins Portal (G2P; g2p.broadinstitute.org/): a human proteome-wide resource that maps 19,996,443 genetic variants onto 42,413 protein sequences and 77,923 structures, with a comprehensive set of structural and functional features. Additionally, the G2P portal generalizes the capability of linking genomics to proteins beyond databases by allowing users to interactively upload protein residue-wise annotations (variants, scores, etc.) as well as the protein structure to establish the connection. The portal serves as an easy-to-use discovery tool for researchers and scientists to hypothesize the structure-function relationship between natural or synthetic variations and their molecular phenotype.
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Pipkorn R, Rawer S, Wiessler M, Waldeck W, Koch M, Schrenk HH, Braun K. SPPS resins impact the PNA-syntheses' improvement. Int J Med Sci 2013; 10:331-7. [PMID: 23423830 PMCID: PMC3575629 DOI: 10.7150/ijms.5374] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Accepted: 12/19/2012] [Indexed: 01/07/2023] Open
Abstract
The personalized medicine, also documented as "individualized medicine", is an effective and therapeutic approach. It is designed to treat the disease of the individual patient whose precise differential gene expression profile is well known. The trend in the biomedical and biophysical research shows important consequences for the pharmaceutical drug and diagnostics research. It requires a high variability in the design and safety of target-specific pharmacologically active molecules and diagnostic components for imaging of metabolic processes. A key technology which may fulfill the highest demands during synthesis of these individual drugs and diagnostics is the solid phase synthesis which is congenial to automated manufacturing. Additionally the choice of tools like resins and reagents is pivotal to synthesize drugs and diagnostics in high quality and yields. Here we demonstrate the solid phase synthesis effects dependent on the choice of resin and of the deprotection agent.
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Affiliation(s)
- Rüdiger Pipkorn
- German Cancer Research Center, Peptide Synthesis Core Facility, INF 280, D-69120 Heidelberg, Germany.
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Gekas J, Gagné G, Bujold E, Douillard D, Forest JC, Reinharz D, Rousseau F. Comparison of different strategies in prenatal screening for Down's syndrome: cost effectiveness analysis of computer simulation. BMJ 2009; 338:b138. [PMID: 19218323 PMCID: PMC2645848 DOI: 10.1136/bmj.b138] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/12/2008] [Indexed: 01/24/2023]
Abstract
OBJECTIVES To assess and compare the cost effectiveness of three different strategies for prenatal screening for Down's syndrome (integrated test, sequential screening, and contingent screenings) and to determine the most useful cut-off values for risk. DESIGN Computer simulations to study integrated, sequential, and contingent screening strategies with various cut-offs leading to 19 potential screening algorithms. DATA SOURCES The computer simulation was populated with data from the Serum Urine and Ultrasound Screening Study (SURUSS), real unit costs for healthcare interventions, and a population of 110 948 pregnancies from the province of Québec for the year 2001. MAIN OUTCOME MEASURES Cost effectiveness ratios, incremental cost effectiveness ratios, and screening options' outcomes. RESULTS The contingent screening strategy dominated all other screening options: it had the best cost effectiveness ratio ($C26,833 per case of Down's syndrome) with fewer procedure related euploid miscarriages and unnecessary terminations (respectively, 6 and 16 per 100,000 pregnancies). It also outperformed serum screening at the second trimester. In terms of the incremental cost effectiveness ratio, contingent screening was still dominant: compared with screening based on maternal age alone, the savings were $C30,963 per additional birth with Down's syndrome averted. Contingent screening was the only screening strategy that offered early reassurance to the majority of women (77.81%) in first trimester and minimised costs by limiting retesting during the second trimester (21.05%). For the contingent and sequential screening strategies, the choice of cut-off value for risk in the first trimester test significantly affected the cost effectiveness ratios (respectively, from $C26,833 to $C37,260 and from $C35,215 to $C45,314 per case of Down's syndrome), the number of procedure related euploid miscarriages (from 6 to 46 and from 6 to 45 per 100,000 pregnancies), and the number of unnecessary terminations (from 16 to 26 and from 16 to 25 per 100,000 pregnancies). CONCLUSIONS Contingent screening, with a first trimester cut-off value for high risk of 1 in 9, is the preferred option for prenatal screening of women for pregnancies affected by Down's syndrome.
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Affiliation(s)
- Jean Gekas
- Centre de recherche du CHUQ, Service de Génétique Médicale, Unité de Diagnostic Prénatal, Faculté de Médecine, Université Laval, Québec city, Québec, Canada.
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Miura S, Miura K, Masuzaki H, Miyake N, Yoshiura KI, Sosonkina N, Harada N, Shimokawa O, Nakayama D, Yoshimura S, Matsumoto N, Niikawa N, Ishimaru T. Microarray comparative genomic hybridization (CGH)-based prenatal diagnosis for chromosome abnormalities using cell-free fetal DNA in amniotic fluid. J Hum Genet 2006; 51:412-417. [PMID: 16622586 DOI: 10.1007/s10038-006-0376-7] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2005] [Accepted: 01/07/2006] [Indexed: 11/26/2022]
Abstract
Cell-free fetal DNA (cffDNA) in the supernatant of amniotic fluid, which is usually discarded, can be used as a sample for prenatal diagnosis. For rapid prenatal diagnosis of frequent chromosome abnormalities, for example trisomies 13, 18, and 21, and monosomy X, using cffDNA, we have developed a targeted microarray-based comparative genomic hybridization (CGH) panel on which BAC clones from chromosomes 13, 18, 21, X, and Y were spotted. Microarray-CGH analysis was performed for a total of 13 fetuses with congenital anomalies using cffDNA from their uncultured amniotic fluid. Microarray CGH with cffDNA led to successful molecular karyotyping for 12 of 13 fetuses within 5 days. Karyotypes of the 12 fetuses (one case of trisomy 13, two of trisomy 18, two of trisomy 21, one of monosomy X, and six of normal karyotype) were later confirmed by conventional chromosome analysis using cultured amniocytes. The one fetus whose molecular-karyotype was indicated as normal by microarray CGH actually had a balanced translocation, 45,XY,der(14;21)(q10;q10). The results indicated that microarray CGH with cffDNA is a useful rapid prenatal diagnostic method at late gestation for chromosome abnormalities with copy-number changes, especially when combined with conventional karyotyping of cultured amniocytes.
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Affiliation(s)
- Shoko Miura
- Department of Obstetrics and Gynecology, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto 1-7-1, 852-8501, Nagasaki, Japan
- Department of Human Genetics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kiyonori Miura
- Department of Obstetrics and Gynecology, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto 1-7-1, 852-8501, Nagasaki, Japan.
| | - Hideaki Masuzaki
- Department of Obstetrics and Gynecology, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto 1-7-1, 852-8501, Nagasaki, Japan
| | - Noriko Miyake
- Department of Human Genetics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
- Department of Pediatrics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Koh-Ichiro Yoshiura
- Department of Human Genetics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Nadiya Sosonkina
- The Research Institute of Personalized Health Sciences, Health Sciences University of Hokkaido, Hokkaido, Japan
| | | | - Osamu Shimokawa
- Department of Human Genetics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
- Kyushu Medical Science, Nagasaki, Japan
| | - Daisuke Nakayama
- Department of Obstetrics and Gynecology, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto 1-7-1, 852-8501, Nagasaki, Japan
| | - Shuichiro Yoshimura
- Department of Obstetrics and Gynecology, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto 1-7-1, 852-8501, Nagasaki, Japan
| | - Naomichi Matsumoto
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
- SORST, Japan Science and Technology Agency (JST), Kawaguchi, Japan
| | - Norio Niikawa
- Department of Human Genetics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
- SORST, Japan Science and Technology Agency (JST), Kawaguchi, Japan
| | - Tadayuki Ishimaru
- Department of Obstetrics and Gynecology, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto 1-7-1, 852-8501, Nagasaki, Japan
- Department of Obstetrics and Gynecology, Sasebo Chuo Hospital, Nagasaki, Japan
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Tang X, Morris SL, Langone JJ, Bockstahler LE. Microarray and allele specific PCR detection of point mutations in Mycobacterium tuberculosis genes associated with drug resistance. J Microbiol Methods 2005; 63:318-30. [PMID: 15923050 DOI: 10.1016/j.mimet.2005.04.026] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2004] [Revised: 03/30/2005] [Accepted: 04/06/2005] [Indexed: 11/25/2022]
Abstract
Global public health is threatened by the emergence of potentially dangerous antibiotic drug-resistant strains of Mycobacterium tuberculosis. Point mutations in certain M. tuberculosis genes are associated with the resistance of M. tuberculosis strains to antibiotic drugs. The purpose of this study was to develop a suitable microarray-based protocol for the detection of point mutations in M. tuberculosis genes associated with drug resistance. We initially developed a conventional, oligonucleotide microarray protocol and used it to detect and identify on a single microarray slide a number of point mutation-containing rpoB and katG gene target sequences. However, the occurrence of some non-specific hybridization led us to the development of an improved protocol based on allele specific PCR combined with tags/anti-tags and microarrays. This protocol was evaluated by detecting point mutations in M. tuberculosis katG and rpoB gene templates produced by recombinant PCR. The methodology allowed sequences containing single point mutations to be readily distinguished from wild type sequences. The data obtained with the improved protocol had strong and specific signals and relatively low amounts of non-specific hybridization. We successfully used this protocol to detect and identify (<8 h) a number of clinically relevant point mutations in the rpoB, katG and rpsL genes of M. tuberculosis clinical isolates. Our allele specific PCR/tags and anti-tags/microarray protocol has several advantages over our conventional oligonucleotide microarray protocol, and it may have broad applications for point mutation detection.
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Affiliation(s)
- Xing Tang
- Center for Devices and Radiological Health, U.S. Food and Drug Administration, Rockville, MD 20850, USA.
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