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52. A large scale hearing loss screen reveals an extensive unexplored genetic landscape for auditory dysfunction

Author

Bowl, Michael R., Simon, Michelle M., Ingham, Neil J., Greenaway, Simon, Santos, Luis, Cater, Heather, Taylor, Sarah, Mason, Jeremy, Kurbatova, Natalja, Pearson, Selina, Bower, Lynette R., Clary, Dave A., Meziane, Hamid, Reilly, Patrick, Minowa, Osamu, Kelsey, Lois, Allen, Sue, Clementson-Mobbs, Sharon, Codner, Gemma, Fray, Martin, Gardiner, Wendy, Joynson, Russell, Kenyon, Janet, Loeffler, Jorik, Nell, Barbara, Parker, Andrew, Quwailid, Deen, Stewart, Michelle, Walling, Alison, Zaman, Rumana, Chen, Chao Kung, Conte, Nathalie, Matthews, Peter, Relac, Mike, Tudose, Ilinca, Warren, Jonathan, Le Marchand, Elise, El Amri, Amal, El Fertak, Leila, Ennah, Hamid, Ali-Hadji, Dalila, Ayadi, Abdel, Wattenhofer-Donze, Marie, Moulaert, David, Jacquot, Sylvie, André, Philippe, Birling, Marie Christine, Pavlovic, Guillaume, Lalanne, Valérie, Lux, Aline, Riet, Fabrice, Mittelhaeuser, Christophe, Bour, Raphael, Guimond, Alain, Bam'Hamed, Chaouki, Leblanc, Sophie, Vasseur, Laurent, Selloum, Mohammed, Sorg, Tania, Ayabe, Shinya, Furuse, Tamio, Kaneda, Hideki, Kobayashi, Kimio, Masuya, Hiroshi, Miura, Ikuo, Obata, Yuichi, Suzuki, Tomohiro, Tamura, Masaru, Tanaka, Nobuhiko, Yamada, Ikuko, Yoshiki, Atsushi, Berberovic, Zorana, Bubshait, Mohammed, Cabezas, Jorge, Carroll, Tracy, Clark, Greg, Clarke, Shannon, Creighton, Amie, Danisment, Ozge, Eskandarian, Mohammad, Feugas, Patricia, Gertsenstein, Marina, Guo, Ruolin, Hunter, Jane, Jacob, Elsa, Lan, Qing, Laurin, Valerie, Law, Napoleon, MacMaster, Sue, Miller, David, Morikawa, Lily, Newbigging, Susan, Owen, Celeste, Penton, Patricia, Pereira, Monica, Qu, Dawei, Shang, Xueyuan, Sleep, Gillian, Sohel, Khondoker, Tondat, Sandra, Wang, Yanchun, Vukobradovic, Igor, Zhu, Yingchun, Chiani, Francesco, Di Pietro, Chiara, Di Segni, Gianfranco, Ermakova, Olga, Ferrara, Filomena, Fruscoloni, Paolo, Gambadoro, Aalessia, Gastaldi, Serena, Golini, Elisabetta, Sala, Gina La, Mandillo, Silvia, Marazziti, Daniela, Massimi, Marzia, Matteoni, Rafaele, Orsini, Tiziana, Pasquini, Miriam, Raspa, Marcello, Rauch, Aline, Rossi, Gianfranco, Rossi, Nicoletta, Putti, Sabrina, Scavizzi, Ferdinando, Tocchini-Valentini, Giuseppe D., Beig, Joachim, Bürger, Antje, Giesert, Florian, Graw, Jochen, Kühn, Ralf, Oritz, Oskar, Schick, Joel, Seisenberger, Claudia, Amarie, Oana, Garrett, Lillian, Hölter, Sabine M., Zimprich, Annemarie, Aguilar-Pimentel, Antonio, Beckers, Johannes, Brommage, Robert, Calzada-Wack, Julia, Fuchs, Helmut, Gailus-Durner, Valérie, Lengger, Christoph, Leuchtenberger, Stefanie, Maier, Holger, Marschall, Susan, Moreth, Kristin, Neff, Frauke, Östereicher, Manuela A., Rozman, Jan, Steinkamp, Ralph, Stoeger, Claudia, Treise, Irina, Stoeger, Tobias, Yildrim, Ali Önder, Eickelberg, Oliver, Becker, Lore, Klopstock, Thomas, Ollert, Markus, Busch, Dirk H., Schmidt-Weber, Carsten, Bekeredjian, Raffi, Zimmer, Andreas, Rathkolb, Birgit, Wolf, Eckhard, Klingenspor, Martin, Tocchini-Valentini, Glauco P., Gao, Xiang, Bradley, Allan, Skarnes, William C., Moore, Mark, Beaudet, Arthur L., Justice, Monica J., Seavitt, John, Dickinson, Mary E., Wurst, Wolfgang, De Angelis, Martin Hrabe, Herault, Yann, Wakana, Shigeharu, Nutter, Lauryl M.J., Flenniken, Ann M., McKerlie, Colin, Murray, Stephen A., Svenson, Karen L., Braun, Robert E., West, David B., Lloyd, K. C.Kent, Adams, David J., White, Jacqui, Karp, Natasha, Flicek, Paul, Smedley, Damian, Meehan, Terrence F., Parkinson, Helen E., Teboul, Lydia M., Wells, Sara, Steel, Karen P., Mallon, Ann Marie, Brown, Steve D.M., Mason, Jeremy [0000-0002-2796-5123], de Angelis, Martin Hrabe [0000-0002-7898-2353], Herault, Yann [0000-0001-7049-6900], Wakana, Shigeharu [0000-0001-8532-0924], McKerlie, Colin [0000-0002-2232-0967], Lloyd, KC Kent [0000-0002-5318-4144], Flicek, Paul [0000-0002-3897-7955], Smedley, Damian [0000-0002-5836-9850], and Apollo - University of Cambridge Repository

Subjects
0301 basic medicine, Cancer Research, Candidate gene, General Physics and Astronomy, Datasets as Topic, Mice, 2.1 Biological and endogenous factors, Protein Interaction Maps, Aetiology, lcsh:Science, Pediatric, Genetics, Mice, Knockout, Multidisciplinary, medicine.diagnostic_test, Hearing Tests, Ear, Phenotype, medicine.anatomical_structure, Technology Platforms, International Mouse Phenotyping Consortium, medicine.symptom, Biotechnology, Hearing Loss/epidemiology, Hearing loss, Knockout, 1.1 Normal biological development and functioning, Science, Biology, General Biochemistry, Genetics and Molecular Biology, Article, 03 medical and health sciences, Clinical Research, Underpinning research, medicine, otorhinolaryngologic diseases, Auditory system, Animals, Genetic Testing, IMPC, mouse, auditory dysfunction, Set (psychology), Hearing Loss, Gene, Genetic testing, Auditory dysfunction, Human Genome, General Chemistry, 030104 developmental biology, Protein Interaction Maps/genetics, lcsh:Q
Abstract

The developmental and physiological complexity of the auditory system is likely reflected in the underlying set of genes involved in auditory function. In humans, over 150 non-syndromic loci have been identified, and there are more than 400 human genetic syndromes with a hearing loss component. Over 100 non-syndromic hearing loss genes have been identified in mouse and human, but we remain ignorant of the full extent of the genetic landscape involved in auditory dysfunction. As part of the International Mouse Phenotyping Consortium, we undertook a hearing loss screen in a cohort of 3006 mouse knockout strains. In total, we identify 67 candidate hearing loss genes. We detect known hearing loss genes, but the vast majority, 52, of the candidate genes were novel. Our analysis reveals a large and unexplored genetic landscape involved with auditory function., The full extent of the genetic basis for hearing impairment is unknown. Here, as part of the International Mouse Phenotyping Consortium, the authors perform a hearing loss screen in 3006 mouse knockout strains and identify 52 new candidate genes for genetic hearing loss.

Published
2017
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53. Employing single-stranded DNA donors for the high-throughput production of conditional knockout alleles in mice

Author

Lanza, Denise G., primary, Gaspero, Angelina, additional, Lorenzo, Isabel, additional, Liao, Lan, additional, Zheng, Ping, additional, Wang, Ying, additional, Deng, Yu, additional, Cheng, Chonghui, additional, Zhang, Chuansheng, additional, Rasband, Matthew N., additional, Seavitt, John R., additional, DeMayo, Francisco J., additional, Xu, Jianming, additional, Dickinson, Mary E., additional, Beaudet, Arthur L., additional, and Heaney, Jason D., additional

Published
2017
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54. Biallelic Variants in OTUD6B Cause an Intellectual Disability Syndrome Associated with Seizures and Dysmorphic Features

Author

Santiago-Sim, Teresa, primary, Burrage, Lindsay C., additional, Ebstein, Frédéric, additional, Tokita, Mari J., additional, Miller, Marcus, additional, Bi, Weimin, additional, Braxton, Alicia A., additional, Rosenfeld, Jill A., additional, Shahrour, Maher, additional, Lehmann, Andrea, additional, Cogné, Benjamin, additional, Küry, Sébastien, additional, Besnard, Thomas, additional, Isidor, Bertrand, additional, Bézieau, Stéphane, additional, Hazart, Isabelle, additional, Nagakura, Honey, additional, Immken, LaDonna L., additional, Littlejohn, Rebecca O., additional, Roeder, Elizabeth, additional, Kara, Bulent, additional, Hardies, Katia, additional, Weckhuysen, Sarah, additional, May, Patrick, additional, Lemke, Johannes R., additional, Elpeleg, Orly, additional, Abu-Libdeh, Bassam, additional, James, Kiely N., additional, Silhavy, Jennifer L., additional, Issa, Mahmoud Y., additional, Zaki, Maha S., additional, Gleeson, Joseph G., additional, Seavitt, John R., additional, Dickinson, Mary E., additional, Ljungberg, M. Cecilia, additional, Wells, Sara, additional, Johnson, Sara J., additional, Teboul, Lydia, additional, Eng, Christine M., additional, Yang, Yaping, additional, Kloetzel, Peter-Michael, additional, Heaney, Jason D., additional, Walkiewicz, Magdalena A., additional, Afawi, Zaid, additional, Balling, Rudi, additional, Barisic, Nina, additional, Baulac, Stéphanie, additional, Craiu, Dana, additional, De Jonghe, Peter, additional, Guerrero-Lopez, Rosa, additional, Guerrini, Renzo, additional, Helbig, Ingo, additional, Hjalgrim, Helle, additional, Jähn, Johanna, additional, Klein, Karl Martin, additional, Leguern, Eric, additional, Lerche, Holger, additional, Marini, Carla, additional, Muhle, Hiltrud, additional, Rosenow, Felix, additional, Serratosa, José, additional, Sterbová, Katalin, additional, Suls, Arvid, additional, Moller, Rikke S., additional, Striano, Pasquale, additional, Weber, Yvonne, additional, and Zara, Federico, additional

Published
2017
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55. Biallelic Variants in OTUD6B Cause an Intellectual Disability Syndrome Associated with Seizures and Dysmorphic Features

Author

Luxembourg Centre for Systems Biomedicine (LCSB): Bioinformatics Core (R. Schneider Group) [research center], Luxembourg Centre for Systems Biomedicine (LCSB): Experimental Neurobiology (Balling Group) [research center], University of Luxembourg: High Performance Computing - ULHPC [research center], Santiago-Sim, Teresa, Burrage, Lindsay C., Ebstein, Frederic, Tokita, Mary J., Miller, Marcus, Bi, Weimin, Braxton, Alicia A., Rosenfeld, Jill A., Shahrour, Maher, Lehmann, Andrea, Cogne, Benjamin, Küry, Sebastien, Besnard, Thomas, Isidor, Bertrand, Bézieau, Stephane, Hazert, Isabelle, Nagakura, Honey, Immken, LaDonna L., Littlejohn, Rebecca O., Roeder, Elizabeth, Euroepinomics Res Consortium ARE working group, Balling, Rudi, Caglayan, Hande, Kara, Bulent, Hardies, Katia, Weckhuysen, Sarah, May, Patrick, Lemke, Johannes R., Elpeleg, Orly, Abu-Libdeh, Bassam, James, Kiely N., Slihavy, Jennifer L., Issa, Mahmoud Y., Zaki, Maha S., Gleeson, Joseph G., Seavitt, John R., Dickinson, Mary E., Ljungberg, M. Cecilia, Wells, Sara, Johnson, Sara L., Teboul, Lydia, Eng, Christine M., Yang, Yaping, Kloetzel, Peter-Michael, Heaney, Jason D., Walkiewicz, Magdalena A., Luxembourg Centre for Systems Biomedicine (LCSB): Bioinformatics Core (R. Schneider Group) [research center], Luxembourg Centre for Systems Biomedicine (LCSB): Experimental Neurobiology (Balling Group) [research center], University of Luxembourg: High Performance Computing - ULHPC [research center], Santiago-Sim, Teresa, Burrage, Lindsay C., Ebstein, Frederic, Tokita, Mary J., Miller, Marcus, Bi, Weimin, Braxton, Alicia A., Rosenfeld, Jill A., Shahrour, Maher, Lehmann, Andrea, Cogne, Benjamin, Küry, Sebastien, Besnard, Thomas, Isidor, Bertrand, Bézieau, Stephane, Hazert, Isabelle, Nagakura, Honey, Immken, LaDonna L., Littlejohn, Rebecca O., Roeder, Elizabeth, Euroepinomics Res Consortium ARE working group, Balling, Rudi, Caglayan, Hande, Kara, Bulent, Hardies, Katia, Weckhuysen, Sarah, May, Patrick, Lemke, Johannes R., Elpeleg, Orly, Abu-Libdeh, Bassam, James, Kiely N., Slihavy, Jennifer L., Issa, Mahmoud Y., Zaki, Maha S., Gleeson, Joseph G., Seavitt, John R., Dickinson, Mary E., Ljungberg, M. Cecilia, Wells, Sara, Johnson, Sara L., Teboul, Lydia, Eng, Christine M., Yang, Yaping, Kloetzel, Peter-Michael, Heaney, Jason D., and Walkiewicz, Magdalena A.

Abstract

Ubiquitination is a posttranslational modification that regulates many cellular processes including protein degradation, intracellular trafficking, cell signaling, and protein-protein interactions. Deubiquitinating enzymes (DUBs), which reverse the process of ubiquitination, are important regulators of the ubiquitin system. OTUD6B encodes a member of the ovarian tumor domain (OTU)-containing subfamily of deubiquitinating enzymes. Herein, we report biallelic pathogenic variants in OTUD6B in 12 individuals from 6 independent families with an intellectual disability syndrome associated with seizures and dysmorphic features. In subjects with predicted loss-of-function alleles, additional features include global developmental delay, microcephaly, absent speech, hypotonia, growth retardation with prenatal onset, feeding difficulties, structural brain abnormalities, congenital malformations including congenital heart disease, and musculoskeletal features. Homozygous Otud6b knockout mice were subviable, smaller in size, and had congenital heart defects, consistent with the severity of loss-of-function variants in humans. Analysis of peripheral blood mononuclear cells from an affected subject showed reduced incorporation of 19S subunits into 26S proteasomes, decreased chymotrypsin-like activity, and accumulation of ubiquitin-protein conjugates. Our findings suggest a role for OTUD6B in proteasome function, establish that defective OTUD6B function underlies a multisystemic human disorder, and provide additional evidence for the emerging relationship between the ubiquitin system and human disease.

Published
2017

56. CRIPT exonic deletion and a novel missense mutation in a female with short stature, dysmorphic features, microcephaly, and pigmentary abnormalities

Author

Leduc, Magalie S., primary, Niu, Zhiyv, additional, Bi, Weimin, additional, Zhu, Wenmiao, additional, Miloslavskaya, Irene, additional, Chiang, Theodore, additional, Streff, Haley, additional, Seavitt, John R., additional, Murray, Stephen A., additional, Eng, Christine, additional, Chan, Audrey, additional, Yang, Yaping, additional, and Lalani, Seema R., additional

Published
2016
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60. Aiolos promotes TH17 differentiation by directly silencing Il2 expression

Author

Quintana, Francisco J, primary, Jin, Hulin, additional, Burns, Evan J, additional, Nadeau, Meghan, additional, Yeste, Ada, additional, Kumar, Deepak, additional, Rangachari, Manu, additional, Zhu, Chen, additional, Xiao, Sheng, additional, Seavitt, John, additional, Georgopoulos, Katia, additional, and Kuchroo, Vijay K, additional

Published
2012
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61. Harnessing of the nucleosome-remodeling-deacetylase complex controls lymphocyte development and prevents leukemogenesis

Author

Zhang, Jiangwen, primary, Jackson, Audrey F, additional, Naito, Taku, additional, Dose, Marei, additional, Seavitt, John, additional, Liu, Feifei, additional, Heller, Elizabeth J, additional, Kashiwagi, Mariko, additional, Yoshida, Toshimi, additional, Gounari, Fotini, additional, Petrie, Howard T, additional, and Georgopoulos, Katia, additional

Published
2011
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62. The Role of the Ikaros Gene Family in Lymphocyte Development.

Author

Iuchi, Shiro, Kuldell, Natalie, Gómez-del Arco, Pablo, Naito, Taku, Seavitt, John, Yoshida, Toshimi, Williams, Christine, and Georgopoulos, Katia

Abstract

In many developmental systems, nuclear regulators have been implicated in coupling key events in gene expression with specific cell fate and lineage decisions. In the hemo-lymphoid system, the Ikaros gene family of zinc finger DNA binding factors controls lymphocyte specification and homeostasis from the hemopoietic stem cell (HSC) throughout development. The dependence of hemo-lymphoid differentiation on Ikaros DNA binding activity together with the presence of Ikaros proteins within higher order chromatin remodeling complexes supports the hypothesis that Ikaros plays a key role in the lineage-specific remodeling of chromatin. Association of Ikaros and its remodeling partners with the chromatin of key lineage-specific genes, and the dependence of these genes on Ikaros complexes for their expression supports this hypothesis and provides unique paradigms to study chromatin regulation of differentiation. [ABSTRACT FROM AUTHOR]

Published
2005
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66. Aiolos promotes TH17 differentiation by directly silencing Il2 expression.

Author

Quintana, Francisco J, Jin, Hulin, Burns, Evan J, Nadeau, Meghan, Yeste, Ada, Kumar, Deepak, Rangachari, Manu, Zhu, Chen, Xiao, Sheng, Seavitt, John, Georgopoulos, Katia, and Kuchroo, Vijay K

Subjects
T helper cells, CELL differentiation, INTERLEUKIN-2, IMMUNOLOGY of inflammation, TRANSCRIPTION factors, AUTOIMMUNITY, LOCUS (Genetics), GENE silencing
Abstract

CD4+ interleukin 17 (IL-17)-producing helper T cells (TH17 cells) are instrumental in the immune response to pathogens. However, an overactive TH17 response results in tissue inflammation and autoimmunity, and therefore it is important to identify the molecular mechanisms that control the development of TH17 cells. IL-2 suppresses such development, but how IL-2 production is actively suppressed during TH7 differentiation is not understood. Here we report that under TH17-polarizing conditions, the transcription factors STAT3 and AhR upregulated the expression of Aiolos, a member of the Ikaros family of transcription factors. Using Aiolos-deficient mice, we demonstrated that Aiolos silenced the Il2 locus, promoting TH17 differentiation in vitro and in vivo. Thus, we have identified a module in the transcriptional program of TH17 cells that actively limits IL-2 production and promotes their differentiation. [ABSTRACT FROM AUTHOR]

Published
2012
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67. Harnessing of the nucleosome-remodeling-deacetylase complex controls lymphocyte development and prevents leukemogenesis.

Author

Zhang, Jiangwen, Jackson, Audrey F, Naito, Taku, Dose, Marei, Seavitt, John, Liu, Feifei, Heller, Elizabeth J, Kashiwagi, Mariko, Yoshida, Toshimi, Gounari, Fotini, Petrie, Howard T, and Georgopoulos, Katia

Subjects
HISTONE deacetylase, LYMPHOCYTES, LEUKEMIA etiology, CHROMATIN, TRANSCRIPTION factors, EPIGENETICS, GENETIC transcription
Abstract

Cell fate depends on the interplay between chromatin regulators and transcription factors. Here we show that activity of the Mi-2? nucleosome-remodeling and histone-deacetylase (NuRD) complex was controlled by the Ikaros family of lymphoid lineage-determining proteins. Ikaros, an integral component of the NuRD complex in lymphocytes, tethered this complex to active genes encoding molecules involved in lymphoid differentiation. Loss of Ikaros DNA-binding activity caused a local increase in chromatin remodeling and histone deacetylation and suppression of lymphoid cell-specific gene expression. Without Ikaros, the NuRD complex also redistributed to transcriptionally poised genes that were not targets of Ikaros (encoding molecules involved in proliferation and metabolism), which induced their reactivation. Thus, release of NuRD from Ikaros regulation blocks lymphocyte maturation and mediates progression to a leukemic state by engaging functionally opposing epigenetic and genetic networks. [ABSTRACT FROM AUTHOR]

Published
2012
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68. Harnessing of the Nucleosome Remodeling Deacetylase complex controls lymphocyte development and prevents leukemogenesis

Author

Zhang, Jiangwen, Jackson, Audrey F., Naito, Taku, Dose, Marei, Seavitt, John, Liu, Feifei, Heller, Elizabeth J., Kashiwagi, Mariko, Yoshida, Toshimi, Gounari, Fotini, Petrie, Howard T., and Georgopoulos, Katia

Abstract

Cell fate decisions depend on the interplay between chromatin regulators and transcription factors. Here we show that activity of the Mi-2β nucleosome remodeling and deacetylase (NuRD) complex was controlled by the Ikaros family of lymphoid-lineage determining proteins. Ikaros, an integral component of the NuRD complex in lymphocytes, tethered this complex to active lymphoid differentiation genes. Loss in Ikaros DNA binding activity caused a local increase in Mi-2β chromatin remodeling and histone deacetylation and suppression of lymphoid gene expression. The NuRD complex also redistributed to transcriptionally poised non-Ikaros gene targets, involved in proliferation and metabolism, inducing their reactivation. Thus, release of NuRD from Ikaros regulation blocks lymphocyte maturation and mediates progression to a leukemic state by engaging functionally opposing epigenetic and genetic networks.

Published
2013
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69. Disease model discovery from 3,328 gene knockouts by The International Mouse Phenotyping Consortium

Author

Meehan, Terrence F, Conte, Nathalie, West, David B, Jacobsen, Julius O, Mason, Jeremy, Warren, Jonathan, Chen, Chao-Kung, Tudose, Ilinca, Relac, Mike, Matthews, Peter, Karp, Natasha, Santos, Luis, Fiegel, Tanja, Ring, Natalie, Westerberg, Henrik, Greenaway, Simon, Sneddon, Duncan, Morgan, Hugh, Codner, Gemma F, Stewart, Michelle E, Brown, James, Horner, Neil, International Mouse Phenotyping Consortium, Haendel, Melissa, Washington, Nicole, Mungall, Christopher J, Reynolds, Corey L, Gallegos, Juan, Gailus-Durner, Valerie, Sorg, Tania, Pavlovic, Guillaume, Bower, Lynette R, Moore, Mark, Morse, Iva, Gao, Xiang, Tocchini-Valentini, Glauco P, Obata, Yuichi, Cho, Soo Young, Seong, Je Kyung, Seavitt, John, Beaudet, Arthur L, Dickinson, Mary E, Herault, Yann, Wurst, Wolfgang, De Angelis, Martin Hrabe, Lloyd, KC Kent, Flenniken, Ann M, Nutter, Lauryl MJ, Newbigging, Susan, McKerlie, Colin, Justice, Monica J, Murray, Stephen A, Svenson, Karen L, Braun, Robert E, White, Jacqueline K, Bradley, Allan, Flicek, Paul, Wells, Sara, Skarnes, William C, Adams, David J, Parkinson, Helen, Mallon, Ann-Marie, Brown, Steve DM, and Smedley, Damian

Subjects
Male, Mice, Knockout, Disease Models, Animal, Gene Knockout Techniques, Mice, Phenotype, Genetic Diseases, Inborn, Animals, Humans, Female, Genetic Predisposition to Disease, 3. Good health
Abstract

Although next-generation sequencing has revolutionized the ability to associate variants with human diseases, diagnostic rates and development of new therapies are still limited by a lack of knowledge of the functions and pathobiological mechanisms of most genes. To address this challenge, the International Mouse Phenotyping Consortium is creating a genome- and phenome-wide catalog of gene function by characterizing new knockout-mouse strains across diverse biological systems through a broad set of standardized phenotyping tests. All mice will be readily available to the biomedical community. Analyzing the first 3,328 genes identified models for 360 diseases, including the first models, to our knowledge, for type C Bernard-Soulier, Bardet-Biedl-5 and Gordon Holmes syndromes. 90% of our phenotype annotations were novel, providing functional evidence for 1,092 genes and candidates in genetically uncharacterized diseases including arrhythmogenic right ventricular dysplasia 3. Finally, we describe our role in variant functional validation with The 100,000 Genomes Project and others.

70. Additional file 6: of Comparative analysis of single-stranded DNA donors to generate conditional null mouse alleles

Author

Lanza, Denise, Gaspero, Angelina, Lorenzo, Isabel, Liao, Lan, Zheng, Ping, Wang, Ying, Deng, Yu, Chonghui Cheng, Chuansheng Zhang, Seavitt, John, DeMayo, Francesco, Jianming Xu, Dickinson, Mary, Beaudet, Arthur, and Heaney, Jason

Subjects
2. Zero hunger
Abstract

Figure S3. A, B. Examples of mutagenized loxP sites identified upon TA cloning PCR products from loxP PCR reactions and Sanger sequencing resulting clones from founder mice. (A) Example of truncated loxP site, and missing sgRNA target sequence in HDR founder from Mbd2 5â loxP site targeting. (B) Examples of base changes and deletions in three different founders from Il1rl1 5â loxP site targeting. Endogenous sequence in blue, sgRNA target site (split) in black underline, BamHI sequence in gold, loxP sequence in green, PAM site in red underline. (B) Copy number data from TaqManÂŽ Copy Number assays for Slc2a12 and Smc1a (paired ssODN conditional null targeting attempts) and Eif2s2 and Cd44 (single lssDNA conditional null targeting attempts) using N1 progeny from a single founder (PDF 63 kb)

71. Additional file 6: of Comparative analysis of single-stranded DNA donors to generate conditional null mouse alleles

Author

Lanza, Denise, Gaspero, Angelina, Lorenzo, Isabel, Liao, Lan, Zheng, Ping, Wang, Ying, Deng, Yu, Chonghui Cheng, Chuansheng Zhang, Seavitt, John, DeMayo, Francesco, Jianming Xu, Dickinson, Mary, Beaudet, Arthur, and Heaney, Jason

Subjects
2. Zero hunger
Abstract

Figure S3. A, B. Examples of mutagenized loxP sites identified upon TA cloning PCR products from loxP PCR reactions and Sanger sequencing resulting clones from founder mice. (A) Example of truncated loxP site, and missing sgRNA target sequence in HDR founder from Mbd2 5â loxP site targeting. (B) Examples of base changes and deletions in three different founders from Il1rl1 5â loxP site targeting. Endogenous sequence in blue, sgRNA target site (split) in black underline, BamHI sequence in gold, loxP sequence in green, PAM site in red underline. (B) Copy number data from TaqManÂŽ Copy Number assays for Slc2a12 and Smc1a (paired ssODN conditional null targeting attempts) and Eif2s2 and Cd44 (single lssDNA conditional null targeting attempts) using N1 progeny from a single founder (PDF 63 kb)

72. High-throughput discovery of novel developmental phenotypes

Author

Dickinson, Mary E., Flenniken, Ann M., Ji, Xiao, Teboul, Lydia, Wong, Michael D., White, Jacqueline K., Meehan, Terrence F., Weninger, Wolfgang J., Westerberg, Henrik, Adissu, Hibret, Baker, Candice N., Bower, Lynette, Brown, James M., Caddle, L. Brianna, Chiani, Francesco, Clary, Dave, Cleak, James, Daly, Mark J., Denegre, James M., Doe, Brendan, Dolan, Mary E., Edie, Sarah M., Fuchs, Helmut, Gailus-Durner, Valerie, Galli, Antonella, Gambadoro, Alessia, Gallegos, Juan, Guo, Shiying, Horner, Neil R., Hsu, Chih-Wei, Johnson, Sara J., Kalaga, Sowmya, Keith, Lance C., Lanoue, Louise, Lawson, Thomas N., Lek, Monkol, Mark, Manuel, Marschall, Susan, Mason, Jeremy, McElwee, Melissa L., Newbigging, Susan, Nutter, Lauryl M. J., Peterson, Kevin A., Ramirez-Solis, Ramiro, Rowland, Douglas J., Ryder, Edward, Samocha, Kaitlin E., Seavitt, John R., Selloum, Mohammed, Szoke-Kovacs, Zsombor, Tamura, Masaru, Trainor, Amanda G., Tudose, Ilinca, Wakana, Shigeharu, Warren, Jonathan, Wendling, Olivia, West, David B., Wong, Leeyean, Yoshiki, Atsushi, MacArthur, Daniel G., Tocchini-Valentini, Glauco P., Gao, Xiang, Flicek, Paul, Bradley, Allan, Skarnes, William C., Justice, Monica J., Parkinson, Helen E., Moore, Mark, Wells, Sara, Braun, Robert E., Svenson, Karen L., de Angelis, Martin Hrabe, Herault, Yann, Mohun, Tim, Mallon, Ann-Marie, Henkelman, R. Mark, Brown, Steve D. M., Adams, David J., Lloyd, K. C. Kent, McKerlie, Colin, Beaudet, Arthur L., Bućan, Maja, Murray, Stephen A., Dickinson, Mary E., Flenniken, Ann M., Ji, Xiao, Teboul, Lydia, Wong, Michael D., White, Jacqueline K., Meehan, Terrence F., Weninger, Wolfgang J., Westerberg, Henrik, Adissu, Hibret, Baker, Candice N., Bower, Lynette, Brown, James M., Caddle, L. Brianna, Chiani, Francesco, Clary, Dave, Cleak, James, Daly, Mark J., Denegre, James M., Doe, Brendan, Dolan, Mary E., Edie, Sarah M., Fuchs, Helmut, Gailus-Durner, Valerie, Galli, Antonella, Gambadoro, Alessia, Gallegos, Juan, Guo, Shiying, Horner, Neil R., Hsu, Chih-Wei, Johnson, Sara J., Kalaga, Sowmya, Keith, Lance C., Lanoue, Louise, Lawson, Thomas N., Lek, Monkol, Mark, Manuel, Marschall, Susan, Mason, Jeremy, McElwee, Melissa L., Newbigging, Susan, Nutter, Lauryl M. J., Peterson, Kevin A., Ramirez-Solis, Ramiro, Rowland, Douglas J., Ryder, Edward, Samocha, Kaitlin E., Seavitt, John R., Selloum, Mohammed, Szoke-Kovacs, Zsombor, Tamura, Masaru, Trainor, Amanda G., Tudose, Ilinca, Wakana, Shigeharu, Warren, Jonathan, Wendling, Olivia, West, David B., Wong, Leeyean, Yoshiki, Atsushi, MacArthur, Daniel G., Tocchini-Valentini, Glauco P., Gao, Xiang, Flicek, Paul, Bradley, Allan, Skarnes, William C., Justice, Monica J., Parkinson, Helen E., Moore, Mark, Wells, Sara, Braun, Robert E., Svenson, Karen L., de Angelis, Martin Hrabe, Herault, Yann, Mohun, Tim, Mallon, Ann-Marie, Henkelman, R. Mark, Brown, Steve D. M., Adams, David J., Lloyd, K. C. Kent, McKerlie, Colin, Beaudet, Arthur L., Bućan, Maja, and Murray, Stephen A.

Abstract

Approximately one-third of all mammalian genes are essential for life. Phenotypes resulting from knockouts of these genes in mice have provided tremendous insight into gene function and congenital disorders. As part of the International Mouse Phenotyping Consortium effort to generate and phenotypically characterize 5,000 knockout mouse lines, here we identify 410 lethal genes during the production of the first 1,751 unique gene knockouts. Using a standardized phenotyping platform that incorporates high-resolution 3D imaging, we identify phenotypes at multiple time points for previously uncharacterized genes and additional phenotypes for genes with previously reported mutant phenotypes. Unexpectedly, our analysis reveals that incomplete penetrance and variable expressivity are common even on a defined genetic background. In addition, we show that human disease genes are enriched for essential genes, thus providing a dataset that facilitates the prioritization and validation of mutations identified in clinical sequencing efforts.

73. Disease model discovery from 3,328 gene knockouts by The International Mouse Phenotyping Consortium

Author

Meehan, Terrence F, Conte, Nathalie, West, David B, Jacobsen, Julius O, Mason, Jeremy, Warren, Jonathan, Chen, Chao-Kung, Tudose, Ilinca, Relac, Mike, Matthews, Peter, Karp, Natasha, Santos, Luis, Fiegel, Tanja, Ring, Natalie, Westerberg, Henrik, Greenaway, Simon, Sneddon, Duncan, Morgan, Hugh, Codner, Gemma F, Stewart, Michelle E, Brown, James M, Horner, Neil, International Mouse Phenotyping Consortium, The, Haendel, Melissa, Washington, Nicole, Mungall, Christopher J, Reynolds, Corey L, Gallegos, Juan, Gailus-Durner, Valerie, Sorg, Tania, Pavlovic, Guillaume, Bower, Lynette R, Moore, Mark, Morse, Iva, Gao, Xiang, Tocchini-Valentini, Glauco P, Obata, Yuichi, Cho, Soo Young, Seong, Je Kyung, Seavitt, John, Beaudet, Arthur L, Dickinson, Mary E, Herault, Yann, Wurst, Wolfgang, Hrabe de Angelis, Martin, Lloyd, K C Kent, Flenniken, Ann M, Nutter, Lauryl M J, Newbigging, Susan, McKerlie, Colin, Justice, Monica J, Murray, Stephen A, Svenson, Karen L, Braun, Robert E, White, Jacqueline K, Bradley, Allan, Flicek, Paul, Wells, Sara, Skarnes, William C, Adams, David J, Parkinson, Helen, Mallon, Ann-Marie, Brown, Stephen D M, Smedley, Damian, Meehan, Terrence F, Conte, Nathalie, West, David B, Jacobsen, Julius O, Mason, Jeremy, Warren, Jonathan, Chen, Chao-Kung, Tudose, Ilinca, Relac, Mike, Matthews, Peter, Karp, Natasha, Santos, Luis, Fiegel, Tanja, Ring, Natalie, Westerberg, Henrik, Greenaway, Simon, Sneddon, Duncan, Morgan, Hugh, Codner, Gemma F, Stewart, Michelle E, Brown, James M, Horner, Neil, International Mouse Phenotyping Consortium, The, Haendel, Melissa, Washington, Nicole, Mungall, Christopher J, Reynolds, Corey L, Gallegos, Juan, Gailus-Durner, Valerie, Sorg, Tania, Pavlovic, Guillaume, Bower, Lynette R, Moore, Mark, Morse, Iva, Gao, Xiang, Tocchini-Valentini, Glauco P, Obata, Yuichi, Cho, Soo Young, Seong, Je Kyung, Seavitt, John, Beaudet, Arthur L, Dickinson, Mary E, Herault, Yann, Wurst, Wolfgang, Hrabe de Angelis, Martin, Lloyd, K C Kent, Flenniken, Ann M, Nutter, Lauryl M J, Newbigging, Susan, McKerlie, Colin, Justice, Monica J, Murray, Stephen A, Svenson, Karen L, Braun, Robert E, White, Jacqueline K, Bradley, Allan, Flicek, Paul, Wells, Sara, Skarnes, William C, Adams, David J, Parkinson, Helen, Mallon, Ann-Marie, Brown, Stephen D M, and Smedley, Damian

Abstract

Although next-generation sequencing has revolutionized the ability to associate variants with human diseases, diagnostic rates and development of new therapies are still limited by a lack of knowledge of the functions and pathobiological mechanisms of most genes. To address this challenge, the International Mouse Phenotyping Consortium is creating a genome- and phenome-wide catalog of gene function by characterizing new knockout-mouse strains across diverse biological systems through a broad set of standardized phenotyping tests. All mice will be readily available to the biomedical community. Analyzing the first 3,328 genes identified models for 360 diseases, including the first models, to our knowledge, for type C Bernard–Soulier, Bardet–Biedl-5 and Gordon Holmes syndromes. 90% of our phenotype annotations were novel, providing functional evidence for 1,092 genes and candidates in genetically uncharacterized diseases including arrhythmogenic right ventricular dysplasia 3. Finally, we describe our role in variant functional validation with The 100,000 Genomes Project and others.

74. Disease model discovery from 3,328 gene knockouts by The International Mouse Phenotyping Consortium

Author

Meehan, Terrence F, Conte, Nathalie, West, David B, Jacobsen, Julius O, Mason, Jeremy, Warren, Jonathan, Chen, Chao-Kung, Tudose, Ilinca, Relac, Mike, Matthews, Peter, Karp, Natasha, Santos, Luis, Fiegel, Tanja, Ring, Natalie, Westerberg, Henrik, Greenaway, Simon, Sneddon, Duncan, Morgan, Hugh, Codner, Gemma F, Stewart, Michelle E, Brown, James, Horner, Neil, Haendel, Melissa, Washington, Nicole, Mungall, Christopher J, Reynolds, Corey L, Gallegos, Juan, Gailus-Durner, Valerie, Sorg, Tania, Pavlovic, Guillaume, Bower, Lynette R, Moore, Mark, Morse, Iva, Gao, Xiang, Tocchini-Valentini, Glauco P, Obata, Yuichi, Cho, Soo Young, Seong, Je Kyung, Seavitt, John, Beaudet, Arthur L, Dickinson, Mary E, Herault, Yann, Wurst, Wolfgang, de Angelis, Martin Hrabe, Lloyd, K C Kent, Flenniken, Ann M, Nutter, Lauryl M J, Newbigging, Susan, McKerlie, Colin, Justice, Monica J, Murray, Stephen A, Svenson, Karen L, Braun, Robert E, White, Jacqueline K, Bradley, Allan, Flicek, Paul, Wells, Sara, Skarnes, William C, Adams, David J, Parkinson, Helen, Mallon, Ann-Marie, Brown, Steve D M, Smedley, Damian, Meehan, Terrence F, Conte, Nathalie, West, David B, Jacobsen, Julius O, Mason, Jeremy, Warren, Jonathan, Chen, Chao-Kung, Tudose, Ilinca, Relac, Mike, Matthews, Peter, Karp, Natasha, Santos, Luis, Fiegel, Tanja, Ring, Natalie, Westerberg, Henrik, Greenaway, Simon, Sneddon, Duncan, Morgan, Hugh, Codner, Gemma F, Stewart, Michelle E, Brown, James, Horner, Neil, Haendel, Melissa, Washington, Nicole, Mungall, Christopher J, Reynolds, Corey L, Gallegos, Juan, Gailus-Durner, Valerie, Sorg, Tania, Pavlovic, Guillaume, Bower, Lynette R, Moore, Mark, Morse, Iva, Gao, Xiang, Tocchini-Valentini, Glauco P, Obata, Yuichi, Cho, Soo Young, Seong, Je Kyung, Seavitt, John, Beaudet, Arthur L, Dickinson, Mary E, Herault, Yann, Wurst, Wolfgang, de Angelis, Martin Hrabe, Lloyd, K C Kent, Flenniken, Ann M, Nutter, Lauryl M J, Newbigging, Susan, McKerlie, Colin, Justice, Monica J, Murray, Stephen A, Svenson, Karen L, Braun, Robert E, White, Jacqueline K, Bradley, Allan, Flicek, Paul, Wells, Sara, Skarnes, William C, Adams, David J, Parkinson, Helen, Mallon, Ann-Marie, Brown, Steve D M, and Smedley, Damian

Abstract

Although next-generation sequencing has revolutionized the ability to associate variants with human diseases, diagnostic rates and development of new therapies are still limited by a lack of knowledge of the functions and pathobiological mechanisms of most genes. To address this challenge, the International Mouse Phenotyping Consortium is creating a genome- and phenome-wide catalog of gene function by characterizing new knockout-mouse strains across diverse biological systems through a broad set of standardized phenotyping tests. All mice will be readily available to the biomedical community. Analyzing the first 3,328 genes identified models for 360 diseases, including the first models, to our knowledge, for type C Bernard–Soulier, Bardet–Biedl-5 and Gordon Holmes syndromes. 90% of our phenotype annotations were novel, providing functional evidence for 1,092 genes and candidates in genetically uncharacterized diseases including arrhythmogenic right ventricular dysplasia 3. Finally, we describe our role in variant functional validation with The 100,000 Genomes Project and others.

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76. Mouse mutant phenotyping at scale reveals novel genes controlling bone mineral density

Author

Paul Flicek, Raffaele Teperino, Lydia Teboul, Thomas Werner, Marie-France Champy, Christopher J. Lelliott, Graham R. Williams, Jacqueline K. White, Gregor Miller, Mary E. Dickinson, Ann M Flenniken, Radislav Sedlacek, Martin Hrabé de Angelis, John R. Seavitt, Peter I. Croucher, Maria del Mar Muniz Moreno, Sara Wells, Jan Rozman, Terrence F. Meehan, Kristian F Odfalk, Juan Gallegos, J. H. Duncan Bassett, Mohammed Selloum, John G. Logan, Sylvie Jacquot, Elena J. Ghirardello, Robert Braun, Frantisek Spoutil, Kevin C K Lloyd, Lore Becker, Stephen A. Murray, Jan Prochazka, Elif F. Acar, Taylor S Vales, Michelle Simon, Helmut Fuchs, Nadine Spielmann, Mark Griffiths, Piia Keskivali-Bond, Valerie Gailus-Durner, Tania Sorg, Christine Schütt, Jeremy Mason, Helen Parkinson, Karen L. Svenson, Abdel Ayadi, Anna L Swan, Jason D. Heaney, Colin McKerlie, Wolfgang Wurst, Ann-Marie Mallon, Heather Cater, Stefanie Leuchtenberger, Harald Grallert, Steve D.M. Brown, Stefan Brandmaier, Yann Herault, Philipp Mayer-Kuckuk, Corey L. Reynolds, Ala Moshiri, Robert Brommage, Derek D. Cissell, Lauryl M J Nutter, Connor Lally, MRC Harwell Institute [UK], German Research Center for Environmental Health - Helmholtz Center München (GmbH), German Center for Diabetes Research - Deutsches Zentrum für Diabetesforschung [Neuherberg] (DZD), Institute of Molecular Genetics of the Czech Academy of Sciences (IMG / CAS), Czech Academy of Sciences [Prague] (CAS), Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Helmholtz-Zentrum München (HZM), The Wellcome Trust Sanger Institute [Cambridge], University of Michigan [Ann Arbor], University of Michigan System, University of California [Davis] (UC Davis), University of California, Baylor College of Medicine (BCM), Baylor University, European Molecular Biology Laboratory [Hinxton], University of Toronto, University of Manitoba [Winnipeg], Lunenfeld-Tanenbaum Research Institute [Toronto, Canada], French National Infrastructure for Mouse Phenogenomics (PHENOMIN), The Jackson Laboratory [Bar Harbor] (JAX), European Bioinformatics Institute [Hinxton] (EMBL-EBI), EMBL Heidelberg, Imperial College London, Technische Universität Munchen - Université Technique de Munich [Munich, Allemagne] (TUM), Deutsches Zentrum für Neurodegenerative Erkrankungen [Ulm] (DZNE), German Research Center for Neurodegenerative Diseases - Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), Munich Cluster for systems neurology [Munich] (SyNergy), Technische Universität Munchen - Université Technique de Munich [Munich, Allemagne] (TUM)-Ludwig-Maximilians-Universität München (LMU), Garvan Institute of Medical Research [Sydney, Australia], St. Vincent’s Clinical School [Sydney, Australia], UNSW Faculty of Medicine [Sydney], University of New South Wales [Sydney] (UNSW)-University of New South Wales [Sydney] (UNSW), Université de Nouvelle-Galles du Sud - UNSW [Sydney, Australia], Mundlos, Stefan, Wellcome Trust, Commission of the European Communities, European Commission, Herault, Yann, Helmholtz Zentrum München = German Research Center for Environmental Health, University of California (UC), Garvan Institute of medical research, Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), Technische Universität München [München] (TUM), Technische Universität München [München] (TUM)-Ludwig-Maximilians-Universität München (LMU), Swan, Anna L [0000-0003-1810-3756], Rozman, Jan [0000-0002-8035-8904], Del Mar Muñiz Moreno, Maria [0000-0002-2662-890X], Leuchtenberger, Stefanie [0000-0003-2475-0810], Brommage, Robert [0000-0002-9947-3822], Grallert, Harald [0000-0002-6876-9655], Werner, Thomas [0000-0003-0402-4539], Teperino, Raffaele [0000-0001-8815-1409], Becker, Lore [0000-0002-6890-4984], Miller, Gregor [0000-0002-4281-4905], Seavitt, John R [0000-0003-3209-3187], Cissell, Derek D [0000-0002-6450-422X], Acar, Elif F [0000-0003-2908-7691], Lelliott, Christopher J [0000-0001-8087-4530], Braun, Robert E [0000-0003-3856-9465], Cater, Heather [0000-0002-8696-6070], Flicek, Paul [0000-0002-3897-7955], Ghirardello, Elena J [0000-0002-1100-9217], Heaney, Jason D [0000-0001-8475-8828], Lally, Connor [0000-0002-3801-1966], Logan, John G [0000-0003-2801-700X], Mason, Jeremy [0000-0002-2796-5123], Nutter, Lauryl MJ [0000-0001-9619-146X], Odfalk, Kristian F [0000-0003-4152-4583], Prochazka, Jan [0000-0003-4675-8995], Selloum, Mohammed [0000-0003-4057-3519], Spoutil, Frantisek [0000-0002-7310-3487], Svenson, Karen L [0000-0002-7928-1911], Vales, Taylor S [0000-0001-9751-5681], Wells, Sara E [0000-0002-0572-0600], White, Jacqueline K [0000-0001-6268-2826], Sedlacek, Radislav [0000-0002-3352-392X], Wurst, Wolfgang [0000-0003-4422-7410], Lloyd, KC Kent [0000-0002-5318-4144], Williams, Graham R [0000-0002-8555-8219], Herault, Yann [0000-0001-7049-6900], Brown, Steve DM [0000-0002-0617-4824], Hrabe de Angelis, Martin [0000-0002-7898-2353], and Apollo - University of Cambridge Repository

Subjects
Male, Osteoporosis, genetics [Gene Expression Regulation], Transgenic, Transcriptome, Mice, 0302 clinical medicine, Animal Cells, Aetiology, Musculoskeletal System, Connective Tissue Cells, Genetics & Heredity, 0303 health sciences, Genomics, 3. Good health, Cellular Types, musculoskeletal diseases, Genotype, In silico, 1.1 Normal biological development and functioning, 03 medical and health sciences, genetics [Osteoporosis], Rheumatology, pathology [Osteoblasts], Genetic, Genome-Wide Association Studies, Genetics, GENOME-WIDE ASSOCIATION, Molecular Biology, Skeleton, Ecology, Evolution, Behavior and Systematics, METAANALYSIS, metabolism [Osteoblasts], 0604 Genetics, [SDV.GEN]Life Sciences [q-bio]/Genetics, Science & Technology, Osteoblasts, IDENTIFICATION, Biology and Life Sciences, Computational Biology, medicine.disease, COLLAGEN, Biological Tissue, OSTEOGENESIS IMPERFECTA, DISCOVERY, IMPC Consortium, Mutation, Animal Studies, Developmental Biology, Candidate gene, Cancer Research, Bone density, Gene Expression, Osteoclasts, [SDV.GEN] Life Sciences [q-bio]/Genetics, QH426-470, Bone remodeling, Bone Density, Medicine and Health Sciences, 2.1 Biological and endogenous factors, Protein Interaction Maps, Connective Tissue Diseases, Promoter Regions, Genetic, Genetics (clinical), Bone mineral, Sex Characteristics, genetics [Bone Density], metabolism [Osteoclasts], Genetic Pleiotropy, Animal Models, pathology [Osteoclasts], Phenotype, DIFFERENTIATION, Experimental Organism Systems, ANIMAL-MODELS, Connective Tissue, SEX, Female, Anatomy, Technology Platforms, Life Sciences & Biomedicine, Research Article, metabolism [Osteoporosis], Mouse Models, 030209 endocrinology & metabolism, Mice, Transgenic, Biology, Research and Analysis Methods, Promoter Regions, Model Organisms, Underpinning research, medicine, Animals, ddc:610, Bone, 030304 developmental biology, Human Genetics, Cell Biology, Genome Analysis, Gene Ontology, Gene Expression Regulation, Musculoskeletal, Genome-Wide Association Study
Abstract

The genetic landscape of diseases associated with changes in bone mineral density (BMD), such as osteoporosis, is only partially understood. Here, we explored data from 3,823 mutant mouse strains for BMD, a measure that is frequently altered in a range of bone pathologies, including osteoporosis. A total of 200 genes were found to significantly affect BMD. This pool of BMD genes comprised 141 genes with previously unknown functions in bone biology and was complementary to pools derived from recent human studies. Nineteen of the 141 genes also caused skeletal abnormalities. Examination of the BMD genes in osteoclasts and osteoblasts underscored BMD pathways, including vesicle transport, in these cells and together with in silico bone turnover studies resulted in the prioritization of candidate genes for further investigation. Overall, the results add novel pathophysiological and molecular insight into bone health and disease., Author summary Patients affected by osteoporosis frequently present with decreased BMD and increased fracture risk. Genes are known to control the onset and progression of bone diseases such as osteoporosis. Therefore, we aimed to identify osteoporosis-related genes using BMD measures obtained from a large pool of mutant mice genetically modified for deletion of individual genes (knockout mice). In a collaborative endeavor involving several research sites world-wide, we generated and phenotyped 3,823 knockout mice and identified 200 genes which regulated BMD. Of the 200 BMD genes, 141 genes were previously not known to affect BMD. The discovery and study of novel BMD genes will help to better understand the causes and therapeutic options for patients with low BMD. In the long run, this will improve the clinical management of osteoporosis.

Published
2021
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77. Uncovering Phenotypic Expansion in AXIN2-Related Disorders through Precision Animal Modeling.

Author

Aceves-Ewing NM, Lanza DG, Marcogliese PC, Lu D, Hsu CW, Gonzalez M, Christiansen AE, Rasmussen TL, Ho AJ, Gaspero A, Seavitt J, Dickinson ME, Yuan B, Shayota BJ, Pachter S, Hu X, Day-Salvatore DL, Mackay L, Kanca O, Wangler MF, Potocki L, Rosenfeld JA, Lewis RA, Chao HT, Lee B, Lee S, Yamamoto S, Bellen HJ, Burrage LC, and Heaney JD

Abstract

Heterozygous pathogenic variants in AXIN2 are associated with oligodontia-colorectal cancer syndrome (ODCRCS), a disorder characterized by oligodontia, colorectal cancer, and in some cases, sparse hair and eyebrows. We have identified four individuals with one of two de novo , heterozygous variants (NM_004655.4:c.196G>A, p.(Glu66Lys) and c.199G>T, p.(Gly67Arg)) in AXIN2 whose presentations expand the phenotype of AXIN2-related disorders. In addition to ODCRCS features, these individuals have global developmental delay, microcephaly, and limb, ophthalmologic, and renal abnormalities. Structural modeling of these variants suggests that they disrupt AXIN2 binding to tankyrase, which regulates AXIN2 levels through PARsylation and subsequent proteasomal degradation. To test whether these variants produce a phenotype in vivo , we utilized an innovative prime editing N1 screen to phenotype heterozygous (p.E66K) mouse embryos, which were perinatal lethal with short palate and skeletal abnormalities, contrary to published viable Axin2 null mouse models. Modeling of the p.E66K variant in the Drosophila wing revealed gain-of-function activity compared to reference AXIN2. However, the variant showed loss-of-function activity in the fly eye compared to reference AXIN2, suggesting that the mechanism by which p.E66K affects AXIN2 function is cell context-dependent. Together, our studies in humans, mice, and flies demonstrate that specific variants in the tankyrase-binding domain of AXIN2 are pathogenic, leading to phenotypic expansion with context-dependent effects on AXIN2 function and WNT signaling. Moreover, the modeling strategies used to demonstrate variant pathogenicity may be beneficial for the resolution of other de novo heterozygous variants of uncertain significance associated with congenital anomalies in humans.

Published
2024
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78. An oocyte-specific Cas9-expressing mouse for germline CRISPR/Cas9-mediated genome editing.

Author

Lanza DG, Mao J, Lorenzo I, Liao L, Seavitt JR, Ljungberg MC, Simpson EM, DeMayo FJ, and Heaney JD

Subjects
Female, Male, Mice, Animals, RNA, Guide, CRISPR-Cas Systems, Mutation, Zygote metabolism, Animals, Genetically Modified, Oocytes, Gene Editing methods, CRISPR-Cas Systems
Abstract

Cas9 transgenes can be employed for genome editing in mouse zygotes. However, using transgenic instead of exogenous Cas9 to produce gene-edited animals creates unique issues including ill-defined transgene integration sites, the potential for prolonged Cas9 expression in transgenic embryos, and increased genotyping burden. To overcome these issues, we generated mice harboring an oocyte-specific, Gdf9 promoter driven, Cas9 transgene (Gdf9-Cas9) targeted as a single copy into the Hprt1 locus. The X-linked Hprt1 locus was selected because it is a defined integration site that does not influence transgene expression, and breeding of transgenic males generates obligate transgenic females to serve as embryo donors. Using microinjections and electroporation to introduce sgRNAs into zygotes derived from transgenic dams, we demonstrate that Gdf9-Cas9 mediates genome editing as efficiently as exogenous Cas9 at several loci. We show that genome editing efficiency is independent of transgene inheritance, verifying that maternally derived Cas9 facilitates genome editing. We also show that paternal inheritance of Gdf9-Cas9 does not mediate genome editing, confirming that Gdf9-Cas9 is not expressed in embryos. Finally, we demonstrate that off-target mutagenesis is equally rare when using transgenic or exogenous Cas9. Together, these results show that the Gdf9-Cas9 transgene is a viable alternative to exogenous Cas9., (© 2024 Wiley Periodicals LLC.)

Published
2024
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