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2. Domains of genome-wide gene expression dysregulation in Down's syndrome

Author

Letourneau, Audrey, Santoni, Federico A., Bonilla, Ximena, Sailani, M. Reza, Gonzalez, David, Kind, Jop, Chevalier, Claire, Thurman, Robert, Sandstrom, Richard S., Hibaoui, Youssef, Garieri, Marco, Popadin, Konstantin, Falconnet, Emilie, Gagnebin, Maryline, Gehrig, Corinne, Vannier, Anne, Guipponi, Michel, Farinelli, Laurent, Robyr, Daniel, Migliavacca, Eugenia, Borel, Christelle, Deutsch, Samuel, Feki, Anis, Stamatoyannopoulos, John A., Herault, Yann, van Steensel, Bas, Guigo, Roderic, and Antonarakis, Stylianos E.

Subjects
Genetic research, Down syndrome -- Genetic aspects, Fibroblasts -- Genetic aspects, Genetic regulation -- Research, Environmental issues, Science and technology, Zoology and wildlife conservation
Abstract

Trisomy 21 is the most frequent genetic cause of cognitive impairment. To assess the perturbations of gene expression in trisomy 21, and to eliminate the noise of genomic variability, we studied the transcriptome of fetal fibroblasts from a pair of monozygotic twins discordant for trisomy 21. Here we show that the differential expression between the twins is organized in domains along all chromosomes that are either upregulated or downregulated. These gene expression dysregulation domains (GEDDs) can be defined by the expression level of their gene content, and are well conserved in induced pluripotent stem cells derived from the twins' fibroblasts. Comparison of the transcriptome of the Ts65Dn mouse model of Down's syndrome and normal littermate mouse fibroblasts also showed GEDDs along the mouse chromosomes that were syntenic in human. The GEDDs correlate with the lamina-associated (LADs) and replication domains of mammalian cells. The overall position of LADs was not altered in trisomic cells; however, the H3K4me3 profile of the trisomic fibroblasts was modified and accurately followed the GEDD pattern. These results indicate that the nuclear compartments of trisomic cells undergo modifications of the chromatin environment influencing the overall transcriptome, and that GEDDs may therefore contribute to some trisomy 21 phenotypes., Down's syndrome results from total or partial trisomy of chromosome 21. It is the most frequent live-born aneuploidy affecting 1 in 750 infants. Down's syndrome patients are characterized by a [...]

Published
2014
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3. Integrative analysis of 111 reference human epigenomes

Author

Consortium, Roadmap Epigenomics, Kundaje, Anshul, Meuleman, Wouter, Ernst, Jason, Bilenky, Misha, Yen, Angela, Heravi-Moussavi, Alireza, Kheradpour, Pouya, Zhang, Zhizhuo, Wang, Jianrong, Ziller, Michael J., Whitaker, John W., Ward, Lucas D., Sarkar, Abhishek, Sandstrom, Richard S., Wu, Yi-Chieh, Pfenning, Andreas R., Wang, Xinchen, Claussnitzer, Melina, Liu, Yaping, Harris, Alan R., Epstein, Charles B., Leung, Danny, Hawkins, David R., Hong, Chibo, Mungall, Andrew J., Chuah, Eric, Hansen, Scott R., Bansal, Mukul S., Dixon, Jesse R., Feizi, Soheil, Kim, Ah-Ram, Li, Daofeng, Elliott, GiNell, Neph, Shane J., Polak, Paz, Ray, Pradipta, Siebenthall, Kyle T., Thurman, Robert E., Zhou, Xin, Boyer, Laurie A., De Jager, Philip L., Fisher, Susan J., Li, Wei, McManus, Michael T., Sunyaev, Shamil, Tlsty, Thea D., Wang, Wei, Waterland, Robert A., Costello, Joseph F., Hirst, Martin, Stamatoyannopoulos, John A., Wang, Ting, Amin, Viren, Schultz, Matthew D., Quon, Gerald, Eaton, Matthew L., Pfenning, Andreas, Liu, Melina ClaussnitzerYaping, Coarfa, Cristian, Shoresh, Noam, Gjoneska, Elizabeta, Xie, Wei, Lister, Ryan, Moore, Richard, Tam, Angela, Canfield, Theresa K., Kaul, Rajinder, Sabo, Peter J., Carles, Annaick, Farh, Kai-How, Karlic, Rosa, Kulkarni, Ashwinikumar, Lowdon, Rebecca, Mercer, Tim R., Onuchic, Vitor, Rajagopal, Nisha, Sallari, Richard C., Sinnott-Armstrong, Nicholas A., Stevens, Michael, Wu, Jie, Zhang, Bo, Abdennur, Nezar, Adli, Mazhar, Akerman, Martin, Barrera, Luis, Antosiewicz-Bourget, Jessica, Ballinger, Tracy, Barnes, Michael J., Bates, Daniel, Bell, Robert J. A., Bennett, David A., Bianco, Katherine, Bock, Christoph, Boyle, Patrick, Brinchmann, Jan, Caballero-Campo, Pedro, Camahort, Raymond, Carrasco-Alfonso, Marlene J., Charnecki, Timothy, Chen, Huaming, Chen, Zhao, Cheng, Jeffrey B., Cho, Stephanie, Chu, Andy, Chung, Wen-Yu, Cowan, Chad, Deng, Qixia Athena, Deshpande, Vikram, Diegel, Morgan, Ding, Bo, Durham, Timothy, Echipare, Lorigail, Edsall, Lee, Flowers, David, Genbacev-Krtolica, Olga, Gifford, Casey, Gillespie, Shawn, Giste, Erika, Glass, Ian A., Gnirke, Andreas, Gormley, Matthew, Gu, Hongcang, Gu, Junchen, Hafler, David A., Hangauer, Matthew J., Hariharan, Manoj, Hatan, Meital, Haugen, Eric, He, Yupeng, Heimfeld, Shelly, Herlofsen, Sarah, Hou, Zhonggang, Humbert, Richard, Issner, Robbyn, Jackson, Andrew R., Jia, Haiyang, Jiang, Peng, Johnson, Audra K., Kadlecek, Theresa, Kamoh, Baljit, Kapidzic, Mirhan, Kent, Jim, Kim, Audrey, Kleinewietfeld, Markus, Klugman, Sarit, Krishnan, Jayanth, Kuan, Samantha, Kutyavin, Tanya, Lee, Ah-Young, Lee, Kristen, Li, Jian, Li, Nan, Li, Yan, Ligon, Keith L., Lin, Shin, Lin, Yiing, Liu, Jie, Liu, Yuxuan, Luckey, John C., Ma, Yussanne P., Maire, Cecile, Marson, Alexander, Mattick, John S., Mayo, Michael, McMaster, Michael, Metsky, Hayden, Mikkelsen, Tarjei, Miller, Diane, Miri, Mohammad, Mukame, Eran, Nagarajan, Raman P., Neri, Fidencio, Nery, Joseph, Nguyen, Tung, OʼGeen, Henriette, Paithankar, Sameer, Papayannopoulou, Thalia, Pelizzola, Mattia, Plettner, Patrick, Propson, Nicholas E., Raghuraman, Sriram, Raney, Brian J., Raubitschek, Anthony, Reynolds, Alex P., Richards, Hunter, Riehle, Kevin, Rinaudo, Paolo, Robinson, Joshua F., Rockweiler, Nicole B., Rosen, Evan, Rynes, Eric, Schein, Jacqueline, Sears, Renee, Sejnowski, Terrence, Shafer, Anthony, Shen, Li, Shoemaker, Robert, Sigaroudinia, Mahvash, Slukvin, Igor, Stehling-Sun, Sandra, Stewart, Ron, Subramanian, Sai Lakshmi, Suknuntha, Kran, Swanson, Scott, Tian, Shulan, Tilden, Hannah, Tsai, Linus, Urich, Mark, Vaughn, Ian, Vierstra, Jeff, Vong, Shinny, Wagner, Ulrich, Wang, Hao, Wang, Tao, Wang, Yunfei, Weiss, Arthur, Whitton, Holly, Wildberg, Andre, Witt, Heather, Won, Kyoung-Jae, Xie, Mingchao, Xing, Xiaoyun, Xu, Iris, Xuan, Zhenyu, Ye, Zhen, Yen, Chia-an, Yu, Pengzhi, Zhang, Xian, Zhang, Xiaolan, Zhao, Jianxin, Zhou, Yan, Zhu, Jiang, Zhu, Yun, Ziegler, Steven, Beaudet, Arthur E., Farnham, Peggy J., Haussler, David, Jones, Steven J. M., Marra, Marco A., Thomson, James A., Tsai, Li-Huei, Zhang, Michael Q., Chadwick, Lisa H., Bernstein, Bradley E., Ecker, Joseph R., Meissner, Alexander, Milosavljevic, Aleksandar, Ren, Bing, and Kellis, Manolis

Published
2015
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4. An integrated encyclopedia of DNA elements in the human genome

Author

Dunham, Ian, Kundaje, Anshul, Aldred, Shelley F., Collins, Patrick J., Davis, Carrie A., Doyle, Francis, Epstein, Charles B., Frietze, Seth, Harrow, Jennifer, Kaul, Rajinder, Khatun, Jainab, Lajoie, Bryan R., Landt, Stephen G., Lee, Bum-Kyu, Pauli, Florencia, Rosenbloom, Kate R., Sabo, Peter, Safi, Alexias, Sanyal, Amartya, Shoresh, Noam, Simon, Jeremy M., Song, Lingyun, Trinklein, Nathan D., Altshuler, Robert C., Birney, Ewan, Brown, James B., Cheng, Chao, Djebali, Sarah, Dong, Xianjun, Ernst, Jason, Furey, Terrence S., Gerstein, Mark, Giardine, Belinda, Greven, Melissa, Hardison, Ross C., Harris, Robert S., Herrero, Javier, Hoffman, Michael M., Iyer, Sowmya, Kellis, Manolis, Kheradpour, Pouya, Lassmann, Timo, Li, Qunhua, Lin, Xinying, Marinov, Georgi K., Merkel, Angelika, Mortazavi, Ali, Parker, Stephen C. J., Reddy, Timothy E., Rozowsky, Joel, Schlesinger, Felix, Thurman, Robert E., Wang, Jie, Ward, Lucas D., Whitfield, Troy W., Wilder, Steven P., Wu, Weisheng, Xi, Hualin S., Yip, Kevin Y., Zhuang, Jiali, Bernstein, Bradley E., Green, Eric D., Gunter, Chris, Snyder, Michael, Pazin, Michael J., Lowdon, Rebecca F., Dillon, Laura A. L., Adams, Leslie B., Kelly, Caroline J., Zhang, Julia, Wexler, Judith R., Good, Peter J., Feingold, Elise A., Crawford, Gregory E., Dekker, Job, Elnitski, Laura, Farnham, Peggy J., Giddings, Morgan C., Gingeras, Thomas R., Guigo, Roderic, Hubbard, Timothy J., Kent, W. James, Lieb, Jason D., Margulies, Elliott H., Myers, Richard M., Stamatoyannopoulos, John A., Tenenbaum, Scott A., Weng, Zhiping, White, Kevin P., Wold, Barbara, Yu, Yanbao, Wrobel, John, Risk, Brian A., Gunawardena, Harsha P., Kuiper, Heather C., Maier, Christopher W., Xie, Ling, Chen, Xian, Mikkelsen, Tarjei S., Gillespie, Shawn, Goren, Alon, Ram, Oren, Zhang, Xiaolan, Wang, Li, Issner, Robbyn, Coyne, Michael J., Durham, Timothy, Ku, Manching, Truong, Thanh, Eaton, Matthew L., Dobin, Alex, Tanzer, Andrea, Lagarde, Julien, Lin, Wei, Xue, Chenghai, Williams, Brian A., Zaleski, Chris, Roder, Maik, Kokocinski, Felix, Abdelhamid, Rehab F., Alioto, Tyler, Antoshechkin, Igor, Baer, Michael T., Batut, Philippe, Bell, Ian, Bell, Kimberly, Chakrabortty, Sudipto, Chrast, Jacqueline, Curado, Joao, Derrien, Thomas, Drenkow, Jorg, Dumais, Erica, Dumais, Jackie, Duttagupta, Radha, Fastuca, Megan, Fejes-Toth, Kata, Ferreira, Pedro, Foissac, Sylvain, Fullwood, Melissa J., Gao, Hui, Gonzalez, David, Gordon, Assaf, Howald, Cedric, Jha, Sonali, Johnson, Rory, Kapranov, Philipp, King, Brandon, Kingswood, Colin, Li, Guoliang, Luo, Oscar J., Park, Eddie, Preall, Jonathan B., Presaud, Kimberly, Ribeca, Paolo, Robyr, Daniel, Ruan, Xiaoan, Sammeth, Michael, Sandhu, Kuljeet Singh, Schaeffer, Lorain, See, Lei-Hoon, Shahab, Atif, Skancke, Jorgen, Suzuki, Ana Maria, Takahashi, Hazuki, Tilgner, Hagen, Trout, Diane, Walters, Nathalie, Wang, Huaien, Hayashizaki, Yoshihide, Reymond, Alexandre, Antonarakis, Stylianos E., Hannon, Gregory J., Ruan, Yijun, Carninci, Piero, Sloan, Cricket A., Learned, Katrina, Malladi, Venkat S., Wong, Matthew C., Barber, Galt P., Cline, Melissa S., Dreszer, Timothy R., Heitner, Steven G., Karolchik, Donna, Kirkup, Vanessa M., Meyer, Laurence R., Long, Jeffrey C., Maddren, Morgan, Raney, Brian J., Grasfeder, Linda L., Giresi, Paul G., Battenhouse, Anna, Sheffield, Nathan C., Showers, Kimberly A., London, Darin, Bhinge, Akshay A., Shestak, Christopher, Schaner, Matthew R., Ki Kim, Seul, Zhang, Zhuzhu Z., Mieczkowski, Piotr A., Mieczkowska, Joanna O., Liu, Zheng, McDaniell, Ryan M., Ni, Yunyun, Rashid, Naim U., Kim, Min Jae, Adar, Sheera, Zhang, Zhancheng, Wang, Tianyuan, Winter, Deborah, Keefe, Damian, Iyer, Vishwanath R., Zheng, Meizhen, Wang, Ping, Gertz, Jason, Vielmetter, Jost, Partridge, E., Varley, Katherine E., Gasper, Clarke, Bansal, Anita, Pepke, Shirley, Jain, Preti, Amrhein, Henry, Bowling, Kevin M., Anaya, Michael, Cross, Marie K., Muratet, Michael A., Newberry, Kimberly M., McCue, Kenneth, Nesmith, Amy S., Fisher-Aylor, Katherine I., Pusey, Barbara, DeSalvo, Gilberto, Parker, Stephanie L., Balasubramanian, Sreeram, Davis, Nicholas S., Meadows, Sarah K., Eggleston, Tracy, Newberry, J. Scott, Levy, Shawn E., Absher, Devin M., Wong, Wing H., Blow, Matthew J., Visel, Axel, Pennachio, Len A., Petrykowska, Hanna M., Abyzov, Alexej, Aken, Bronwen, Barrell, Daniel, Barson, Gemma, Berry, Andrew, Bignell, Alexandra, Boychenko, Veronika, Bussotti, Giovanni, Davidson, Claire, Despacio-Reyes, Gloria, Diekhans, Mark, Ezkurdia, Iakes, Frankish, Adam, Gilbert, James, Gonzalez, Jose Manuel, Griffiths, Ed, Harte, Rachel, Hendrix, David A., Hunt, Toby, Jungreis, Irwin, Kay, Mike, Khurana, Ekta, Leng, Jing, Lin, Michael F., Loveland, Jane, Lu, Zhi, Manthravadi, Deepa, Mariotti, Marco, Mudge, Jonathan, Mukherjee, Gaurab, Notredame, Cedric, Pei, Baikang, Rodriguez, Jose Manuel, Saunders, Gary, Sboner, Andrea, Searle, Stephen, Sisu, Cristina, Snow, Catherine, Steward, Charlie, Tapanari, Electra, Tress, Michael L., van Baren, Marijke J., Washietl, Stefan, Wilming, Laurens, Zadissa, Amonida, Zhang, Zhengdong, Brent, Michael, Haussler, David, Valencia, Alfonso, Addleman, Nick, Alexander, Roger P., Auerbach, Raymond K., Balasubramanian, Suganthi, Bettinger, Keith, Bhardwaj, Nitin, Boyle, Alan P., Cao, Alina R., Cayting, Philip, Charos, Alexandra, Cheng, Yong, Eastman, Catharine, Euskirchen, Ghia, Fleming, Joseph D., Grubert, Fabian, Habegger, Lukas, Hariharan, Manoj, Harmanci, Arif, Iyengar, Sushma, Jin, Victor X., Karczewski, Konrad J., Kasowski, Maya, Lacroute, Phil, Lam, Hugo, Lamarre-Vincent, Nathan, Lian, Jin, Lindahl-Allen, Marianne, Min, Renqiang, Miotto, Benoit, Monahan, Hannah, Moqtaderi, Zarmik, Mu, Xinmeng J., Ouyang, Zhengqing, Patacsil, Dorrelyn, Raha, Debasish, Ramirez, Lucia, Reed, Brian, Shi, Minyi, Slifer, Teri, Witt, Heather, Wu, Linfeng, Xu, Xiaoqin, Yan, Koon-Kiu, Yang, Xinqiong, Struhl, Kevin, Weissman, Sherman M., Penalva, Luiz O., Karmakar, Subhradip, Bhanvadia, Raj R., Choudhury, Alina, Domanus, Marc, Ma, Lijia, Moran, Jennifer, Victorsen, Alec, Auer, Thomas, Centanin, Lazaro, Eichenlaub, Michael, Gruhl, Franziska, Heermann, Stephan, Hoeckendorf, Burkhard, Inoue, Daigo, Kellner, Tanja, Kirchmaier, Stephan, Mueller, Claudia, Reinhardt, Robert, Schertel, Lea, Schneider, Stephanie, Sinn, Rebecca, Wittbrodt, Beate, Wittbrodt, Jochen, Partridge, E. Christopher, Jain, Gaurav, Balasundaram, Gayathri, Bates, Daniel L., Byron, Rachel, Canfield, Theresa K., Diegel, Morgan J., Dunn, Douglas, Ebersol, Abigail K., Frum, Tristan, Garg, Kavita, Gist, Erica, Hansen, R. Scott, Boatman, Lisa, Haugen, Eric, Humbert, Richard, Johnson, Audra K., Johnson, Ericka M., Kutyavin, Tattyana V., Lee, Kristen, Lotakis, Dimitra, Maurano, Matthew T., Neph, Shane J., Neri, Fiedencio V., Nguyen, Eric D., Qu, Hongzhu, Reynolds, Alex P., Roach, Vaughn, Rynes, Eric, Sanchez, Minerva E., Sandstrom, Richard S., Shafer, Anthony O., Stergachis, Andrew B., Thomas, Sean, Vernot, Benjamin, Vierstra, Jeff, Vong, Shinny, Weaver, Molly A., Yan, Yongqi, Zhang, Miaohua, Akey, Joshua M., Bender, Michael, Dorschner, Michael O., Groudine, Mark, MacCoss, Michael J., Navas, Patrick, Stamatoyannopoulos, George, Beal, Kathryn, Brazma, Alvis, Flicek, Paul, Johnson, Nathan, Lukk, Margus, Luscombe, Nicholas M., Sobral, Daniel, Vaquerizas, Juan M., Batzoglou, Serafim, Sidow, Arend, Hussami, Nadine, Kyriazopoulou-Panagiotopoulou, Sofia, Libbrecht, Max W., Schaub, Marc A., Miller, Webb, Bickel, Peter J., Banfai, Balazs, Boley, Nathan P., Huang, Haiyan, Li, Jingyi Jessica, Noble, William Stafford, Bilmes, Jeffrey A., Buske, Orion J., Sahu, Avinash D., Kharchenko, Peter V., Park, Peter J., Baker, Dannon, Taylor, James, and Lochovsky, Lucas

Subjects
Genetic research, Human genome -- Research, Genetic transcription -- Research, Environmental issues, Science and technology, Zoology and wildlife conservation
Abstract

The human genome encodes the blueprint of life, but the function of the vast majority of its nearly three billion bases is unknown. The Encyclopedia of DNA Elements (ENCODE) project has systematically mapped regions of transcription, transcription factor association, chromatin structure and histone modification. These data enabled us to assign biochemical functions for 80% of the genome, in particular outside of the well-studied protein-coding regions. Many discovered candidate regulatory elements are physically associated with one another and with expressed genes, providing new insights into the mechanisms of gene regulation. The newly identified elements also show a statistical correspondence to sequence variants linked to human disease, and can thereby guide interpretation of this variation. Overall, the project provides new insights into the organization and regulation of our genes and genome, and is an expansive resource of functional annotations for biomedical research., Author(s): The ENCODE Project Consortium; Overall coordination (data analysis coordination); Ian Dunham [2]; Anshul Kundaje [3, 82]; Data production leads (data production); Shelley F. Aldred [4]; Patrick J. Collins [4]; [...]

Published
2012
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6. DNase I hypersensitivity analysis of the mouse brain and retina identifies region-specific regulatory elements.

Author

Wilken, Matthew S., Brzezinski, Joseph A., La Torre, Anna, Siebenthall, Kyle, Thurman, Robert, Sabo, Peter, Sandstrom, Richard S., Vierstra, Jeff, Canfield, Theresa K., Scott Hansen, R., Bender, Michael A., Stamatoyannopoulos, John, and Reh, Thomas A.

Subjects
ALLERGIES, SPINAL cord, CENTRAL nervous system, RETINA, GENOMES
Abstract

Background: The brain, spinal cord, and neural retina comprise the central nervous system (CNS) of vertebrates. Understanding the regulatory mechanisms that underlie the enormous cell-type diversity of the CNS is a significant challenge. Whole-genome mapping of DNase I-hypersensitive sites (DHSs) has been used to identify cis-regulatory elements in many tissues. We have applied this approach to the mouse CNS, including developing and mature neural retina, whole brain, and two well-characterized brain regions, the cerebellum and the cerebral cortex. Results: For the various regions and developmental stages of the CNS that we analyzed, there were approximately the same number of DHSs; however, there were many DHSs unique to each CNS region and developmental stage. Many of the DHSs are likely to mark enhancers that are specific to the specific CNS region and developmental stage. We validated the DNase I mapping approach for identification of CNS enhancers using the existing VISTA Browser database and with in vivo and in vitro electroporation of the retina. Analysis of transcription factor consensus sites within the DHSs shows distinct region-specific profiles of transcriptional regulators particular to each region. Clustering developmentally dynamic DHSs in the retina revealed enrichment of developmental stagespecific transcriptional regulators. Additionally, we found reporter gene activity in the retina driven from several previously uncharacterized regulatory elements surrounding the neurodevelopmental gene Otx2. Identification of DHSs shared between mouse and human showed region-specific differences in the evolution of cis-regulatory elements. Conclusions: Overall, our results demonstrate the potential of genome-wide DNase I mapping to cis-regulatory questions regarding the regional diversity within the CNS. These data represent an extensive catalogue of potential cis-regulatory elements within the CNS that display region and temporal specificity, as well as a set of DHSs common to CNS tissues. Further examination of evolutionary conservation of DHSs between CNS regions and different species may reveal important cis-regulatory elements in the evolution of the mammalian CNS. [ABSTRACT FROM AUTHOR]

Published
2015
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7. Integrative analysis of 111 reference human epigenomes.

Author

Roadmap Epigenomics Consortium, Kundaje, Anshul, Meuleman, Wouter, Ernst, Jason, Bilenky, Misha, Yen, Angela, Heravi-Moussavi, Alireza, Kheradpour, Pouya, Zhang, Zhizhuo, Wang, Jianrong, Ziller, Michael J., Amin, Viren, Whitaker, John W., Schultz, Matthew D., Ward, Lucas D., Sarkar, Abhishek, Quon, Gerald, Sandstrom, Richard S., Eaton, Matthew L., and Wu, Yi-Chieh

Subjects
EPIGENETICS, HUMAN genetic variation, GENOMICS, CELL differentiation
Abstract

The reference human genome sequence set the stage for studies of genetic variation and its association with human disease, but epigenomic studies lack a similar reference. To address this need, the NIH Roadmap Epigenomics Consortium generated the largest collection so far of human epigenomes for primary cells and tissues. Here we describe the integrative analysis of 111 reference human epigenomes generated as part of the programme, profiled for histone modification patterns, DNA accessibility, DNA methylation and RNA expression. We establish global maps of regulatory elements, define regulatory modules of coordinated activity, and their likely activators and repressors. We show that disease- and trait-associated genetic variants are enriched in tissue-specific epigenomic marks, revealing biologically relevant cell types for diverse human traits, and providing a resource for interpreting the molecular basis of human disease. Our results demonstrate the central role of epigenomic information for understanding gene regulation, cellular differentiation and human disease. [ABSTRACT FROM AUTHOR]

Published
2015
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8. A genome-wide map of adeno-associated virus-mediated human gene targeting.

Author

Deyle, David R, Hansen, R Scott, Cornea, Anda M, Li, Li B, Burt, Amber A, Alexander, Ian E, Sandstrom, Richard S, Stamatoyannopoulos, John A, Wei, Chia-Lin, and Russell, David W

Subjects
ADENO-associated virus, LOCUS (Genetics), HUMAN genome, CHROMOSOME inversions, MAMMALIAN cell cycle
Abstract

To determine which genomic features promote homologous recombination, we created a genome-wide map of gene targeting sites. We used an adeno-associated virus vector to target identical loci introduced as transcriptionally active retroviral vectors. A comparison of ~2,000 targeted and untargeted sites showed that targeting occurred throughout the human genome and was not influenced by the presence of nearby CpG islands, sequence repeats or DNase I-hypersensitive sites. Targeted sites were preferentially located within transcription units, especially when the target loci were transcribed in the opposite orientation to their surrounding chromosomal genes. We determined the impact of DNA replication by mapping replication forks, which revealed a preference for recombination at target loci transcribed toward an incoming fork. Our results constitute the first genome-wide screen of gene targeting in mammalian cells and demonstrate a strong recombinogenic effect of colliding polymerases. [ABSTRACT FROM AUTHOR]

Published
2014
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9. Molecular targets of chromatin repressive mark H3K9me3 in primate progenitor cells within adult neurogenic niches.

Author

Foret, Michael R., Sandstrom, Richard S., Rhodes, Christopher T., Yufeng Wang, Berger, Mitchel S., and Lin, Chin-Hsing Annie

Subjects
HISTONE methylation, GENOMICS, RNA sequencing, DNA replication, CHROMATIN
Abstract

Histone 3 Lysine 9 (H3K9) methylation is known to be associated with pericentric heterochromatin and important in genomic stability. In this study, we show that trimethylation at H3K9 (H3K9me3) is enriched in an adult neural stem cell niche- the subventricular zone (SVZ) on the walls of the lateral ventricle in both rodent and non-human primate baboon brain. Previous studies have shown that there is significant correlation between baboon and human regarding genomic similarity and brain structure, suggesting that findings in baboon are relevant to human. To understand the function of H3K9me3 in this adult neurogenic niche, we performed genome-wide analyses using ChIP-Seq (chromatin immunoprecipitation and deep-sequencing) and RNA-Seq for in vivo SVZ cells purified from baboon brain. Through integrated analyses of ChIP-Seq and RNA-Seq, we found that H3K9me3-enriched genes associated with cellular maintenance, post-transcriptional and translational modifications, signaling pathways, and DNA replication are expressed, while genes involved in axon/neuron, hepatic stellate cell, or immune-response activation are not expressed. As neurogenesis progresses in the adult SVZ, cell fate restriction is essential to direct proper lineage commitment. Our findings highlight that H3K9me3 repression in undifferentiated SVZ cells is engaged in the maintenance of cell type integrity, implicating a role for H3K9me3 as an epigenetic mechanism to control cell fate transition within this adult germinal niche. [ABSTRACT FROM AUTHOR]

Published
2014
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10. Functionally and Phenotypically Distinct Subpopulations of Marrow Stromal Cells Are Fibroblast in Origin and Induce Different Fates in Peripheral Blood Monocytes.

Author

Iwata, Mineo, Sandstrom, Richard S., Delrow, Jeffrey J., Stamatoyannopoulos, John A., and Torok-Storb, Beverly

Subjects
*MESENCHYMAL stem cells, *FIBROBLASTS, *MONOCYTES, *MACROPHAGES, *CELL lines, *IMMUNOHISTOCHEMISTRY
Abstract

Marrow stromal cells constitute a heterogeneous population of cells, typically isolated after expansion in culture. In vivo, stromal cells often exist in close proximity or in direct contact with monocyte-derived macrophages, yet their interaction with monocytes is largely unexplored. In this report, isolated CD146+ and CD146− stromal cells, as well as immortalized cell lines representative of each (designated HS27a and HS5, respectively), were shown by global DNase I hypersensitive site mapping and principal coordinate analysis to have a lineage association with marrow fibroblasts. Gene expression profiles generated for the CD146+ and CD146− cell lines indicate significant differences in their respective transcriptomes, which translates into differences in secreted factors. Consequently, the conditioned media (CM) from these two populations induce different fates in peripheral blood monocytes. Monocytes incubated in CD146+ CM acquire a tissue macrophage phenotype, whereas monocytes incubated in CM from CD146− cells express markers associated with pre-dendritic cells. Importantly, when CD14+ monocytes are cultured in contact with the CD146+ cells, the combined cell populations, assayed as a unit, show increased levels of transcripts associated with organismal development and hematopoietic regulation. In contrast, the gene expression profile from cocultures of monocytes and CD146− cells does not differ from that obtained when monocytes are cultured with CD146− CM. These in vitro results show that the CD146+ marrow stromal cells together with monocytes increase the expression of genes relevant to hematopoietic regulation. In vivo relevance of these data is suggested by immunohistochemistry of marrow biopsies showing juxtaposed CD146+ cells and CD68+ cells associated with these upregulated proteins. [ABSTRACT FROM AUTHOR]

Published
2014
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11. Integrative analysis of 111 reference human epigenomes

Author

Kundaje, Anshul, Meuleman, Wouter, Ernst, Jason, Bilenky, Misha, Yen, Angela, Kheradpour, Pouya, Zhang, Zhizhuo, Heravi-Moussavi, Alireza, Liu, Yaping, Amin, Viren, Ziller, Michael J, Whitaker, John W, Schultz, Matthew D, Sandstrom, Richard S, Eaton, Matthew L, Wu, Yi-Chieh, Wang, Jianrong, Ward, Lucas D, Sarkar, Abhishek, Quon, Gerald, Pfenning, Andreas, Wang, Xinchen, Claussnitzer, Melina, Coarfa, Cristian, Harris, R Alan, Shoresh, Noam, Epstein, Charles B, Gjoneska, Elizabeta, Leung, Danny, Xie, Wei, Hawkins, R David, Lister, Ryan, Hong, Chibo, Gascard, Philippe, Mungall, Andrew J, Moore, Richard, Chuah, Eric, Tam, Angela, Canfield, Theresa K, Hansen, R Scott, Kaul, Rajinder, Sabo, Peter J, Bansal, Mukul S, Carles, Annaick, Dixon, Jesse R, Farh, Kai-How, Feizi, Soheil, Karlic, Rosa, Kim, Ah-Ram, Kulkarni, Ashwinikumar, Li, Daofeng, Lowdon, Rebecca, Mercer, Tim R, Neph, Shane J, Onuchic, Vitor, Polak, Paz, Rajagopal, Nisha, Ray, Pradipta, Sallari, Richard C, Siebenthall, Kyle T, Sinnott-Armstrong, Nicholas, Stevens, Michael, Thurman, Robert E, Wu, Jie, Zhang, Bo, Zhou, Xin, Beaudet, Arthur E, Boyer, Laurie A, De Jager, Philip, Farnham, Peggy J, Fisher, Susan J, Haussler, David, Jones, Steven, Li, Wei, Marra, Marco, McManus, Michael T, Sunyaev, Shamil, Thomson, James A, Tlsty, Thea D, Tsai, Li-Huei, Wang, Wei, Waterland, Robert A, Zhang, Michael, Chadwick, Lisa H, Bernstein, Bradley E, Costello, Joseph F, Ecker, Joseph R, Hirst, Martin, Meissner, Alexander, Milosavljevic, Aleksandar, Ren, Bing, Stamatoyannopoulos, John A, Wang, Ting, and Kellis, Manolis

Abstract

The reference human genome sequence set the stage for studies of genetic variation and its association with human disease, but a similar reference has lacked for epigenomic studies. To address this need, the NIH Roadmap Epigenomics Consortium generated the largest collection to-date of human epigenomes for primary cells and tissues. Here, we describe the integrative analysis of 111 reference human epigenomes generated as part of the program, profiled for histone modification patterns, DNA accessibility, DNA methylation, and RNA expression. We establish global maps of regulatory elements, define regulatory modules of coordinated activity, and their likely activators and repressors. We show that disease and trait-associated genetic variants are enriched in tissue-specific epigenomic marks, revealing biologically-relevant cell types for diverse human traits, and providing a resource for interpreting the molecular basis of human disease. Our results demonstrate the central role of epigenomic information for understanding gene regulation, cellular differentiation, and human disease.

Published
2015
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12. Corrigendum: Domains of genome-wide gene expression dysregulation in Down's syndrome.

Author

Letourneau, Audrey, Santoni, Federico A., Bonilla, Ximena, Reza Sailani, M., Gonzalez, David, Kind, Jop, Chevalier, Claire, Thurman, Robert, Sandstrom, Richard S., Hibaoui, Youssef, Garieri, Marco, Popadin, Konstantin, Falconnet, Emilie, Gagnebin, Maryline, Gehrig, Corinne, Vannier, Anne, Guipponi, Michel, Farinelli, Laurent, Robyr, Daniel, and Migliavacca, Eugenia

Published
2016
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