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High-Affinity Binding Sites for the Deformed Protein Are Required for the Function of an Autoregulatory Enhancer of the Deformed Gene
Downloaded from genesdev.cshlp.org on October 9, 2021 - Published by Cold Spring Harbor Laboratory Press High-affinity binding sites for the Deformed protein are required for the function of an autoregulatory enhancer of the Deformed gene Michael Regulski,*'^ Scott Dessain/ Nadine McGinnis/ and William McGinnis*'^ Departments of Biology' and Molecular Biophysics and Biochemistry^ Yale University, New Haven, Connecticut 06511 USA The homeotic selector gene Deformed [Dfd) is required to specify the identity of head segments during Drosophila development. Previous experiments have shown that for the Dfd segmental identity function to operate in epidermal cells, the Dfd gene must be persistently expressed. One mechanism that provides persistent embryonic expression of Dfd is an autoregulatory circuit. Here, we show that the control of this autoregulatory circuit is likely to be directly mediated by the binding of Dfd protein to an upstream enhancer in Dfd locus DNA. In a 25-kb region around the Dfd transcription unit, restriction fragments with the highest binding affinity for Dfd protein map within the limits of the upstream autoregulatory element at approximately -5 kb. A minimal autoregulatory element, within a 920-bp segment of upstream DNA, has four moderate- to high-affinity binding sites for Dfd protein, with the two highest affinity sites sharing an ATCATTA consensus sequence. Site-specific mutagenesis of these four sites results in an element that has low affinity for Dfd protein when assayed in vitro and is nonfunctional when assayed in embryos. \Key Words: Deformed; autoregulatory circuit; homeo domain, homeotic protein] Received October 26, 1990; revised version accepted December 13, 1990. -
Copy Number Alterations of BCAS1 in Squamous Cell Carcinomas
The Korean Journal of Pathology 2011; 45: 271-275 DOI: 10.4132/KoreanJPathol.2011.45.3.271 Copy Number Alterations of BCAS1 in Squamous Cell Carcinomas Yu Im Kim · Ahwon Lee1 Background: Breast carcinoma amplified sequence 1 BCAS1( ), located in 20q13, is amplified and Jennifer Kim · Bum Hee Lee overexpressed in breast cancers. Even though BCAS1 is expected to be an oncogene candidate, Sung Hak Lee · Suk Woo Nam its contribution to tumorigenesis and copy number status in other malignancies is not reported. To elucidate the role of BCAS1 in squamous cell carcinomas, we investigated the copy number Sug Hyung Lee · Won Sang Park status and expression level of BCAS1 in several squamous cell carcinoma cell lines, normal kera- Nam Jin Yoo · Jung Young Lee tinocytes and primary tumors. Methods: We quantitated BCAS1 gene by real-time polymerase Sang Ho Kim · Su Young Kim chain reaction (PCR). Expression level of BCAS1 was measured by real-time reverse transcrip- tion-PCR and immunoblot. Results: Seven (88%) of 8 squamous cell carcinoma cell lines showed Departments of Pathology and 1Hospital copy number gain of BCAS1 with various degrees. BCAS1 gene in primary tumors (73%) also Pathology, The Catholic University of Korea showed copy number gain. However, expression level did not show a linear correlation with copy College of Medicine, Seoul, Korea number changes. Conclusions: We identified copy number gain of BCAS1 in squamous cell car- cinomas. Due to lack of linear correlation between copy numbers of BCAS1 and its expression Received: March 10, 2010 level, we could not confirm that the overexpression of BCAS1 is a common finding in squamous Accepted: May 24, 2011 cell carcinoma cell lines. -
Perspectives
Copyright 0 1994 by the Genetics Society of America Perspectives Anecdotal, Historical and Critical Commentaries on Genetics Edited by James F. Crow and William F. Dove A Century of Homeosis, A Decade of Homeoboxes William McGinnis Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut 06520-8114 NE hundred years ago, while the science of genet- ing mammals, and were proposed to encode DNA- 0 ics still existed only in the yellowing reprints of a binding homeodomainsbecause of a faint resemblance recently deceased Moravian abbot, WILLIAMBATESON to mating-type transcriptional regulatory proteins of (1894) coined the term homeosis to define a class of budding yeast and an even fainter resemblance to bac- biological variations in whichone elementof a segmen- terial helix-turn-helix transcriptional regulators. tally repeated array of organismal structures is trans- The initial stream of papers was a prelude to a flood formed toward the identity of another. After the redis- concerning homeobox genes and homeodomain pro- coveryof MENDEL’Sgenetic principles, BATESONand teins, a flood that has channeled into a steady river of others (reviewed in BATESON1909) realized that some homeo-publications, fed by many tributaries. A major examples of homeosis in floral organs and animal skel- reason for the continuing flow of studies is that many etons could be attributed to variation in genes. Soon groups, working on disparate lines of research, have thereafter, as the discipline of Drosophila genetics was found themselves swept up in the currents when they born and was evolving into a formidable intellectual found that their favorite protein contained one of the force enriching many biologicalsubjects, it gradually be- many subtypes of homeodomain. -
Views of the NIH
CLINICAL EPIDEMIOLOGY www.jasn.org Genetic Variants Associated with Circulating Fibroblast Growth Factor 23 Cassianne Robinson-Cohen ,1 Traci M. Bartz,2 Dongbing Lai,3 T. Alp Ikizler,1 Munro Peacock,4 Erik A. Imel,4 Erin D. Michos,5 Tatiana M. Foroud,3 Kristina Akesson,6,7 Kent D. Taylor,8 Linnea Malmgren,6,7 Kunihiro Matsushita,5,9,10 Maria Nethander,11 Joel Eriksson,12 Claes Ohlsson,12 Daniel Mellström,12 Myles Wolf,13 Osten Ljunggren,14 Fiona McGuigan,6,7 Jerome I. Rotter,8 Magnus Karlsson,6,7 Michael J. Econs,3,4 Joachim H. Ix,15,16 Pamela L. Lutsey,17 Bruce M. Psaty,18,19 Ian H. de Boer ,20 and Bryan R. Kestenbaum 20 Due to the number of contributing authors, the affiliations are listed at the end of this article. ABSTRACT Background Fibroblast growth factor 23 (FGF23), a bone-derived hormone that regulates phosphorus and vitamin D metabolism, contributes to the pathogenesis of mineral and bone disorders in CKD and is an emerging cardiovascular risk factor. Central elements of FGF23 regulation remain incompletely under- stood; genetic variation may help explain interindividual differences. Methods We performed a meta-analysis of genome-wide association studies of circulating FGF23 con- centrations among 16,624 participants of European ancestry from seven cohort studies, excluding par- ticipants with eGFR,30 ml/min per 1.73 m2 to focus on FGF23 under normal conditions. We evaluated the association of single-nucleotide polymorphisms (SNPs) with natural log–transformed FGF23 concentra- tion, adjusted for age, sex, study site, and principal components of ancestry. -
A Screen for Modifiers of Dejin-Med Function in Drosophila
Copyright Q 1995 by the Genetics Society of America A Screen for Modifiers of Dejin-med Function in Drosophila Katherine W. Hardjng,* Gabriel Gellon? Nadine McGinnis* and William M~Ginnis*~~ *Departwnt of Molecular Biophysics and Biochemistry and iDepartment of Biology, Yak University, New Haven Connecticut 06520-8114 Manuscript received February 16, 1995 Accepted for publication May 13, 1995 ABSTRACT Proteins produced by the homeotic genes of the Hox family assign different identities to cells on the anterior/posterior axis. Relatively little is known about the signalling pathways that modulate their activities or the factors with which they interact to assign specific segmental identities. To identify genes that might encode such functions, we performed a screen for second site mutations that reduce the viability of animals carrying hypomorphic mutant alleles of the Drosophila homeotic locus, Deformed. Genes mapping to six complementation groups on the third chromosome were isolatedas modifiers of Defolmd function. Productsof two of these genes, sallimus and moira, have been previously proposed as homeotic activators since they suppress the dominant adult phenotype of Polycomb mutants. Mutations in hedgehog, which encodes secreted signalling proteins, were also isolated as Deformed loss-of-function enhancers. Hedgehog mutant alleles also suppress the Polycomb phenotype. Mutations were also isolated in a few genes that interact with Deformed but not with Polycomb, indicating that the screen identified genes that are not general homeotic activators. Twoof these genes, cap ‘n’collarand defaced, have defects in embryonic head development that are similar to defects seen in loss of functionDefmed mutants. OMEOTIC proteinsencoded in the Anten- in embryos, and some evidence exists to support this H napedia and bithorax complexes of Drosophila, view. -
The Evolution of Function in the Rab Family of Small Gtpases
The Evolution of Function in the Rab Family of small GTPases Yoan Diekmann Dissertation presented to obtain the Ph.D. degree in Computational Biology Instituto de Tecnologia Química e Biológica | Universidade Nova de Lisboa Research work coordinated by: Oeiras, April, 2014 Cover: “The Rab Universe”. A circular version of Figure 2.5. The Evolution of Function in the Rab Family of small GTPases Yoan Diekmann, Computational Genomics Laboratory, Instituto Gulben- kian de Ciˆencia Declara¸c˜ao: Esta disserta¸c˜ao´eo resultado do meu pr´opriodesenvolvido entre Outubro de 2009 e Outubro de 2013 no laborat´oriodo Jos´eB. Pereira-Leal, PhD, Instituto Gulbenkian de Ciˆeciaem Oeiras, Portugal, no ˆambito do Programa de Doutoramento em Biologia Computacional (edi¸c˜ao2008-2009). Apoio financeiro: Apoio financeiro da FCT e do FSE no ˆambito do Quadro Comunit´ariode Apoio, bolsa de doutoramento SFRH/BD/33860/2009 e projectos HMSP-CT/SAU-ICT/0075/2009 e PCDC/EBB-BIO/119006/2010. Acknowledgements “Alors que vous achevez la lecture de mon expos´e,il est n´ecessaire de souligner le fait que ce que j’en ai retir´eest bien plus cons´equent.” Mit diesen Worten, die ich meinem Freund Axel schulde, begann was in der vorliegenden Arbeit seinen vorl¨aufigenH¨ohepunktfindet. So wahr wie damals ist der Satz auch heute, und das verdanke ich einer Reihe von Men- schen welche unerw¨ahnt zu lassen unm¨oglich ist. Obwohl das Schreiben die folgenden Namen notwendigerweise in eine Reihenfolge zw¨angt,so geb¨uhrt doch allen ihr g¨anzlich eigener Dank. Ich lasse der M¨udigkeit freien Lauf und schreibe einfach drauf los. -
Distinct Gene Expression Patterns in a Tamoxifen-Sensitive Human Mammary Carcinoma Xenograft and Its Tamoxifen-Resistant Subline Maca 3366/TAM
Molecular Cancer Therapeutics 151 Distinct gene expression patterns in a tamoxifen-sensitive human mammary carcinoma xenograft and its tamoxifen-resistant subline MaCa 3366/TAM Michael Becker,1 Anette Sommer,2 of acquired tamoxifen resistance. Finally, genes whose Jo¨rn R. Kra¨tzschmar,2 Henrik Seidel,2 expression profiles are distinctly changed between the Hans-Dieter Pohlenz,2 and Iduna Fichtner1 two xenograft lines will be further evaluated as potential targets for diagnostic or therapeutic approaches of 1 Max-Delbrueck-Center for Molecular Medicine, Experimental tamoxifen-resistant breast cancer. [Mol Cancer Ther Pharmacology, and 2Research Laboratories, Schering AG, Berlin, Germany 2005;4(1):151–68] Abstract Introduction The reasons why human mammary tumors become Breast cancer is the most common type of cancer in women resistant to tamoxifen therapy are mainly unknown. of the Western world. Due to advances in early detection Changes in gene expression may occur as cells acquire and treatment, breast cancer survival rates have increased resistance to antiestrogens. We therefore undertook a com- markedly over the past decades. After surgery, estrogen parative gene expression analysis of tamoxifen-sensitive receptor a (ERa)–positive breast cancer is usually treated and tamoxifen-resistant human breast cancer in vivo with endocrine therapy. Tamoxifen, a nonsteroidal anti- models using Affymetrix oligonucleotide arrays to analyze estrogen, also termed selective estrogen receptor modula- differential gene expression. Total RNAs from the tamox- tor, is the first-line therapy for premenopausal and, until ifen-sensitive patient-derived mammary carcinoma xeno- recently, also for postmenopausal hormone receptor– graft MaCa 3366 and the tamoxifen-resistant model MaCa positive women (1). -
Scientific American Paper
The Molecular Architects of Body Design Putting a human gene into a fly may sound like the basis for a science fiction film, but it demonstrates that nearly identical molecular mechanisms define body shapes in all animals by William McGinnis and Michael Kuziora ll animals develop from a single tems that mold our form, we humans Antennapedia adults are rare excep- fertilized egg cell that goes may be much more similar to our far tions, because most mutations in ho- A through many rounds of divi- distant worm and insect relatives than meotic genes cause fatal birth defects sion, often yielding millions of embry- we might like to think. So similar, in in Drosophila. Nevertheless, even those onic cells. In a dazzling and still myste- fact, thatÑas our work has shownÑcu- dying embryos can be quite instructive. rious feat of self-organization, these rious experimenters can use some hu- For instance, Ernesto Sanchez-Herrero cells arrange themselves into a com- man and mouse Hox genes to guide the and Gines Morata of the Independent plete organism, in which bone, muscle, development of fruit-ßy embryos. University of Madrid found that elimi- brain and skin integrate into a harmo- The story of these universal molecu- nation of three genes in the bithorax nious whole. The fundamental process lar architects actually begins with the complexÑUltrabithorax, abdominal-A is constant, but the results are not: hu- pioneering genetic studies of Edward and Abdominal-BÑis lethal. Yet such mans, mice, ßies and worms represent B. Lewis of the California Institute of mutant embryos survive long enough a wide range of body designs. -
Research2007herschkowitzetvolume Al
Open Access Research2007HerschkowitzetVolume al. 8, Issue 5, Article R76 Identification of conserved gene expression features between comment murine mammary carcinoma models and human breast tumors Jason I Herschkowitz¤*†, Karl Simin¤‡, Victor J Weigman§, Igor Mikaelian¶, Jerry Usary*¥, Zhiyuan Hu*¥, Karen E Rasmussen*¥, Laundette P Jones#, Shahin Assefnia#, Subhashini Chandrasekharan¥, Michael G Backlund†, Yuzhi Yin#, Andrey I Khramtsov**, Roy Bastein††, John Quackenbush††, Robert I Glazer#, Powel H Brown‡‡, Jeffrey E Green§§, Levy Kopelovich, reviews Priscilla A Furth#, Juan P Palazzo, Olufunmilayo I Olopade, Philip S Bernard††, Gary A Churchill¶, Terry Van Dyke*¥ and Charles M Perou*¥ Addresses: *Lineberger Comprehensive Cancer Center. †Curriculum in Genetics and Molecular Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA. ‡Department of Cancer Biology, University of Massachusetts Medical School, Worcester, MA 01605, USA. reports §Department of Biology and Program in Bioinformatics and Computational Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA. ¶The Jackson Laboratory, Bar Harbor, ME 04609, USA. ¥Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA. #Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC 20057, USA. **Department of Pathology, University of Chicago, Chicago, IL 60637, USA. ††Department of Pathology, University of Utah School of Medicine, Salt Lake City, UT 84132, USA. ‡‡Baylor College of Medicine, Houston, TX 77030, USA. §§Transgenic Oncogenesis Group, Laboratory of Cancer Biology and Genetics. Chemoprevention Agent Development Research Group, National Cancer Institute, Bethesda, MD 20892, USA. Department of Pathology, Thomas Jefferson University, Philadelphia, PA 19107, USA. Section of Hematology/Oncology, Department of Medicine, Committees on Genetics and Cancer Biology, University of Chicago, Chicago, IL 60637, USA. -
Repurposing of Modified Alpidem and Propoxyphene to Cure AURKA, BCAS1, GNAS and MLH1 Gene Mutations in Colorectal Cancer
ing: Op gn en si A e c D c g e Munir et al., Drug Des 2017, 6:1 s u r s D Drug Designing: Open Access DOI: 10.4172/2169-0138.1000141 ISSN: 2169-0138 Research Article Open Access Repurposing of Modified Alpidem and Propoxyphene to Cure AURKA, BCAS1, GNAS and MLH1 Gene Mutations in Colorectal Cancer Anum Munir1-3*, Shumaila Azam1-3, Sartaj Ali3, Azhar Mehmood1,3, Abbas Hussain Shah5, M Saad Khan2, Rabbiah Manzoor2,4, Maria Sana2, Shakeel Ahmed Mufti2 and Sahar Fazal2 1Bioinformatics International Research Club, Abbottabad, Pakistan 2Department of Bioinformatics and Biosciences, Capital University of Science and Technology, Islamabad, Pakistan 3Department of Bioinformatics, Government Post Graduate College Mandian, Abbottabad, Pakistan 4Department of Medical Sciences, Wah Medical College, Wah Cantt, Pakistan 5Department of Botany, Government Post Graduate College Mansehra, Pakistan Abstract Background: Colorectal cancer is a varied illness with an expected heritability of 25–30%. Many CRC disorders occur because of solid family history, a high penetrance of the infection, and developing various tumors at an early age. A few novel genes are recognized that shows associations with CRC, such as AURKA, BCAS1, GNAS and MLH1. Material and methods: In this research work FDA rejected Alpidem and Propoxyphene were selected. Drugs were changed on the basis of side effects; modified drugs were docked with AURKA, BCAS1, GNAS and MLH1 proteins and QSAR analysis was performed. Results: Docked and QSAR results demonstrated the better interaction of both modified Alpidem and Propoxyphene along with proteins of CRC causing genes. The toxicity value and side-effects of modified Alpidem and modified Propoxyphene are less than original drugs. -
Information Processing in Biology: a Study on Signaling and Emergent
Information processing in biology A study on signaling and emergent computation Tiago Ramalho M¨unchen2015 Information processing in biology A study on signaling and emergent computation Tiago Ramalho Dissertation an der Fakult¨atf¨urPhysik der Ludwig{Maximilians{Universit¨at M¨unchen vorgelegt von Tiago Ramalho aus Lissabon M¨unchen, den 10. Juni Erstgutachter: Prof. Dr. Ulrich Gerland Zweitgutachter: Prof. Dr. Erwin Frey Datum der müdlichen Prüfung: 23.10.2015 Zusammenfassung Erfolgreiche Organismen mussen¨ auf eine Vielzahl von Herausforderungen einer dynami- schen und unsicheren Umgebung angemessen reagieren. Die Grundmechanismen eines sol- chen Verhalten k¨onnen im Allgemeinen als Ein-/Ausgabeeinheiten beschrieben werden. Diese Einheiten bilden die Umweltbedingungen (Eing¨ange) auf assoziierte Reaktionen (Ausg¨ange) ab. Vor diesem Hintergrund ist es interessant zu versuchen diese Systeme mit Informationstheorie { eine Theorie entwickelt um mathematisch Ein-/Ausgabesysteme zu beschreiben { zu modellieren. Aus der Informationstheoretischen Sicht ist das Verhalten eines Organismus vom seinem Repertoire an m¨glichen Reaktionen unter verschiedenen Umgebungsbedingungen vollst¨andig charakterisiert. Unter dem Gesichtspunkt der naturlichen¨ Auslese ist es berechtigt anzu- nehmen, dass diese Ein-/Ausgabeabbildung zur Optimierung der Fitness des Organismus optimiert worden ist. Unter dieser Annahme, sollte es m¨oglich sein die mechanistischen De- tails der Implementierung zu abstrahieren und die zu Fitness fuhrenden¨ Grundprinzipien unter bestimmten Umweltbedingungen zu verstehen. Diese k¨onnen dann benutzt werden um Hypothesen uber¨ die zugrunde liegende Implementierung des Systems zu formulieren sowie um neuartige Reaktionen unter ¨außeren St¨orungen vorherzusagen. In dieser Arbeit wende ich Informationstheorie auf die Frage an, wie biologische Systeme komplexe Ausgaben mit relativ einfachen Mechanismen in einer robusten Weise erzeugen. -
The DNA Sequence and Comparative Analysis of Human Chromosome 20
articles The DNA sequence and comparative analysis of human chromosome 20 P. Deloukas, L. H. Matthews, J. Ashurst, J. Burton, J. G. R. Gilbert, M. Jones, G. Stavrides, J. P. Almeida, A. K. Babbage, C. L. Bagguley, J. Bailey, K. F. Barlow, K. N. Bates, L. M. Beard, D. M. Beare, O. P. Beasley, C. P. Bird, S. E. Blakey, A. M. Bridgeman, A. J. Brown, D. Buck, W. Burrill, A. P. Butler, C. Carder, N. P. Carter, J. C. Chapman, M. Clamp, G. Clark, L. N. Clark, S. Y. Clark, C. M. Clee, S. Clegg, V. E. Cobley, R. E. Collier, R. Connor, N. R. Corby, A. Coulson, G. J. Coville, R. Deadman, P. Dhami, M. Dunn, A. G. Ellington, J. A. Frankland, A. Fraser, L. French, P. Garner, D. V. Grafham, C. Grif®ths, M. N. D. Grif®ths, R. Gwilliam, R. E. Hall, S. Hammond, J. L. Harley, P. D. Heath, S. Ho, J. L. Holden, P. J. Howden, E. Huckle, A. R. Hunt, S. E. Hunt, K. Jekosch, C. M. Johnson, D. Johnson, M. P. Kay, A. M. Kimberley, A. King, A. Knights, G. K. Laird, S. Lawlor, M. H. Lehvaslaiho, M. Leversha, C. Lloyd, D. M. Lloyd, J. D. Lovell, V. L. Marsh, S. L. Martin, L. J. McConnachie, K. McLay, A. A. McMurray, S. Milne, D. Mistry, M. J. F. Moore, J. C. Mullikin, T. Nickerson, K. Oliver, A. Parker, R. Patel, T. A. V. Pearce, A. I. Peck, B. J. C. T. Phillimore, S. R. Prathalingam, R. W. Plumb, H. Ramsay, C. M.