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Relevant bibliographies by topics / Polycomb complex

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Academic literature on the topic 'Polycomb complex'

Author: Grafiati

Published: 31 August 2024

Last updated: 31 July 2025

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Journal articles on the topic "Polycomb complex"

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Strutt, H., and R. Paro. "The polycomb group protein complex of Drosophila melanogaster has different compositions at different target genes." Molecular and Cellular Biology 17, no. 12 (1997): 6773–83. http://dx.doi.org/10.1128/mcb.17.12.6773.

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In Drosophila the Polycomb group genes are required for the long-term maintenance of the repressed state of many developmental regulatory genes. Their gene products are thought to function in a common multimeric complex that associates with Polycomb group response elements (PREs) in target genes and regulates higher-order chromatin structure. We show that the chromodomain of Polycomb is necessary for protein-protein interactions within a Polycomb-Polyhomeotic complex. In addition, Posterior Sex Combs protein coimmunoprecipitates Polycomb and Polyhomeotic, indicating that they are members of a

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Chiang, A., M. B. O'Connor, R. Paro, J. Simon, and W. Bender. "Discrete Polycomb-binding sites in each parasegmental domain of the bithorax complex." Development 121, no. 6 (1995): 1681–89. http://dx.doi.org/10.1242/dev.121.6.1681.

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The Polycomb protein of Drosophila melanogaster maintains the segmental expression limits of the homeotic genes in the bithorax complex. Polycomb-binding sites within the bithorax complex were mapped by immunostaining of salivary gland polytene chromosomes. Polycomb bound to four DNA fragments, one in each of four successive parasegmental regulatory regions. These fragments correspond exactly to the ones that can maintain segmentally limited expression of a lacZ reporter gene. Thus, Polycomb acts directly on discrete multiple sites in bithorax regulatory DNA. Constructs combining fragments fro

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De, Sandip, Natalie D. Gehred, Miki Fujioka, Fountane W. Chan, James B. Jaynes, and Judith A. Kassis. "Defining the Boundaries of Polycomb Domains in Drosophila." Genetics 216, no. 3 (2020): 689–700. http://dx.doi.org/10.1534/genetics.120.303642.

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Polycomb group (PcG) proteins are an important group of transcriptional repressors that act by modifying chromatin. PcG target genes are covered by the repressive chromatin mark H3K27me3. Polycomb repressive complex 2 (PRC2) is a multiprotein complex that is responsible for generating H3K27me3. In Drosophila, PRC2 is recruited by Polycomb Response Elements (PREs) and then trimethylates flanking nucleosomes, spreading the H3K27me3 mark over large regions of the genome, the “Polycomb domains.” What defines the boundary of a Polycomb domain? There is experimental evidence that insulators, PolII,

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Ali, Janann Y., and Welcome Bender. "Cross-Regulation among the Polycomb Group Genes in Drosophila melanogaster." Molecular and Cellular Biology 24, no. 17 (2004): 7737–47. http://dx.doi.org/10.1128/mcb.24.17.7737-7747.2004.

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ABSTRACT Genes of the Polycomb group in Drosophila melanogaster function as long-term transcriptional repressors. A few members of the group encode proteins found in two evolutionarily conserved chromatin complexes, Polycomb repressive complex 1 (PRC1) and the ESC-E(Z) complex. The majority of the group, lacking clear biochemical functions, might be indirect regulators. The transcript levels of seven Polycomb group genes were assayed in embryos mutant for various other genes in the family. Three Polycomb group genes were identified as upstream positive regulators of the core components of PRC1

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Seong, Ihn Sik, Juliana M. Woda, Ji-Joon Song, et al. "Huntingtin facilitates polycomb repressive complex 2." Human Molecular Genetics 19, no. 4 (2009): 573–83. http://dx.doi.org/10.1093/hmg/ddp524.

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Mohd-Sarip, Adone, Jan A. van der Knaap, Claire Wyman, Roland Kanaar, Paul Schedl, and C. Peter Verrijzer. "Architecture of a Polycomb Nucleoprotein Complex." Molecular Cell 24, no. 1 (2006): 91–100. http://dx.doi.org/10.1016/j.molcel.2006.08.007.

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Iragavarapu, Akhil Gargey, Liqi Yao, and Vignesh Kasinath. "Structural insights into the interactions of Polycomb Repressive Complex 2 with chromatin." Biochemical Society Transactions 49, no. 6 (2021): 2639–53. http://dx.doi.org/10.1042/bst20210450.

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Polycomb repressive complexes are a family of chromatin modifier enzymes which are critical for regulating gene expression and maintaining cell-type identity. The reversible chemical modifications of histone H3 and H2A by the Polycomb proteins are central to its ability to function as a gene silencer. PRC2 is both a reader and writer of the tri-methylation of histone H3 lysine 27 (H3K27me3) which serves as a marker for transcription repression, and heterochromatin boundaries. Over the last few years, several studies have provided key insights into the mechanisms regulating the recruitment and

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Iwata, Shintaro, Hisanori Takenobu, Hajime Kageyama, et al. "Polycomb group molecule PHC3 regulates polycomb complex composition and prognosis of osteosarcoma." Cancer Science 101, no. 7 (2010): 1646–52. http://dx.doi.org/10.1111/j.1349-7006.2010.01586.x.

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Lo, Stanley M., Nitin K. Ahuja, and Nicole J. Francis. "Polycomb Group Protein Suppressor 2 of Zeste Is a Functional Homolog of Posterior Sex Combs." Molecular and Cellular Biology 29, no. 2 (2008): 515–25. http://dx.doi.org/10.1128/mcb.01044-08.

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ABSTRACT The Drosophila melanogaster Polycomb group protein Posterior Sex Combs is a component of Polycomb repressive complex 1 and is central to Polycomb group-mediated silencing. A related Polycomb group gene, Suppressor 2 of zeste, is thought to be partially redundant in function. The two proteins share a small region of homology but also contain regions of unconserved sequences. Here we report a biochemical characterization of Suppressor 2 of zeste. Like Posterior Sex Combs, Suppressor 2 of zeste binds DNA, compacts chromatin, and inhibits chromatin remodeling. Interestingly, the regions o

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LaJeunesse, D., and A. Shearn. "E(z): a polycomb group gene or a trithorax group gene?" Development 122, no. 7 (1996): 2189–97. http://dx.doi.org/10.1242/dev.122.7.2189.

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The products of the Polycomb group of genes are cooperatively involved in repressing expression of homeotic selector genes outside of their appropriate anterior/posterior boundaries. Loss of maternal and/or zygotic function of Polycomb group genes results in the ectopic expression of both Antennapedia Complex and Bithorax Complex genes. The products of the trithorax group of genes are cooperatively involved in maintaining active expression of homeotic selector genes within their appropriate anterior/posterior boundaries. Loss of maternal and/or zygotic function of trithorax group genes results

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Dissertations / Theses on the topic "Polycomb complex"

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Preissner, Tanja Stephanie. "The Polycomb-repressive complex 2 in X-inactivation." Thesis, Imperial College London, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.445872.

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Courel, María F. (María Federica). "The function of E2F6 in the Polycomb complex." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/86281.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Biology, 2005.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>The E2F family of transcription factors are known cell cycle regulators that function at the G1/S transition. Unlike other E2Fs, E2F6 does not activate transcription and is not regulated by pocket protein binding. Instead, this protein appears to repress transcription through the recruitment of the Polycomb Group (PcG) complex. This complex is responsible for the maintenance of Hox gene expression patterns during development and

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Grijzenhout, Anne Elizabeth. "Characterisation of AEBP2 : a polycomb repressive complex 2 component." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:159716a1-a03c-44f3-9fd1-0e88328caef6.

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Palau, de Miguel Anna. "Polycomb Repressive Complex 1 functions in differentiation and myelodysplastic syndromes." Doctoral thesis, Universitat de Barcelona, 2016. http://hdl.handle.net/10803/400293.

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Polycomb proteins are important epigenetic regulators involved in the maintenance of stemness and differentiation. In this thesis, I focused on the role of some Polycomb Repressive Complex 1 (PRC1) components. On the one hand, I studied the role of Cbx8 PRC1 component protein in the differentiation of mouse embryonic stem cells (mESCs). On the other hand, I analyzed the role of PRC1 components in a hematological disease-related context which implies a defect in differentiation, the myelodysplastic syndrome (MDS). Specifically, I focused on RING1A PRC1-component function in this disease.

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Cedrone, L. "THE ROLE OF ENHANCED POLYCOMB REPRESSIVE COMPLEX 2 ACTIVITY IN TUMORIGENESIS." Doctoral thesis, Università degli Studi di Milano, 2017. http://hdl.handle.net/2434/468289.

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Polycomb Group of proteins are essential factors present in cells’ nuclei. These multiprotein complexes are key repressive chromatin factors that regulate cellular differentiation during development, contributing to the correct establishment of lineage-specific transcriptional programs. Moreover, they represent key factors of proliferation and deregulation of their levels and activity have been linked to the onset and development of several human cancers. Recently, gain of function heterozygous EZH2 mutations have been discovered in non-Hodgkin lymphomas and melanomas. These mutations cause a

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Ragazzini, Roberta. "Identification of a tissue-specific cofactor of polycomb repressive complex 2." Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066196/document.

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Répression des genes par le dépôt de la marque H3K27me3. Divers cofacteurs contrôlent sa fonction dans des cellules de différentes origines, comme les gametes. Au cours de ma thèse, j'ai utilisé des modèles murins ou un tag a été introduit dans les gènes Ezh2 et Ezh1, j'ai isolé des extraits nucléaires de testicules adultes entiers et identifié un nouveau polypeptide interagissant avec PRC2. Ce dernier est spécifiquement exprimé dans les gonades et sa fonction est inconnue. J'ai confirmé son interaction avec PRC2 et montré qu'il pourrait recruter PRC2 à la chromatine. Grâce à un modèle de sour

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Ragazzini, Roberta. "Identification of a tissue-specific cofactor of polycomb repressive complex 2." Electronic Thesis or Diss., Paris 6, 2017. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2017PA066196.pdf.

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Répression des genes par le dépôt de la marque H3K27me3. Divers cofacteurs contrôlent sa fonction dans des cellules de différentes origines, comme les gametes. Au cours de ma thèse, j'ai utilisé des modèles murins ou un tag a été introduit dans les gènes Ezh2 et Ezh1, j'ai isolé des extraits nucléaires de testicules adultes entiers et identifié un nouveau polypeptide interagissant avec PRC2. Ce dernier est spécifiquement exprimé dans les gonades et sa fonction est inconnue. J'ai confirmé son interaction avec PRC2 et montré qu'il pourrait recruter PRC2 à la chromatine. Grâce à un modèle de sour

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Sanulli, Serena. "Polycomb repressive complex 2 and jarid2 in the establishment of repressive chromatin state." Paris 6, 2013. http://www.theses.fr/2013PA066429.

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RC2 contribue au maintien de la répression transcriptionnelle au cours du développement par la di- et tri- méthylation de H3K27. PRC2 est nécessaire à de nombreux processus biologiques tels que le renouvellement et différenciation des cellules souches et le maintien de l’identité cellulaire. Malgré de nombreuses recherches, les mécanismes qui régulent la dynamique du recrutement de PRC2 à la chromatine sont peu compris. Des études récentes ont montré que Jarid2 est un cofacteur de PRC2 qui régulerait son ciblage à la chromatine. Pendant ma thèse, je me suis concentrée sur l’étude des mécanisme

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Asamaowei, Inemo E. "The Role of Polycomb Repressive Complex 2 in Epidermal Homeostasis and Hair Growth." Thesis, University of Bradford, 2017. http://hdl.handle.net/10454/16844.

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Polycomb repressive complex 2 (PRC2) catalyses the methylation of ‘Lys-27’ of histone H3, leading to transcriptional repression of target genes through its catalytic subunit Enhancer of zeste homolog 1/2 (EZH1/2). PRC2 functions as a critical regulator of stem cells in mouse embryonic and adult tissues. However, the role of PRC2 in human skin remains largely unknown. This study investigated the role of PRC2 in human epidermal homeostasis and hair growth. The expression of EZH2 was elevated in differentiating suprabasal layers of the human epidermis. Consistently, EZH1/2 expression and enzymat

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Sharif, Azar. "Structural characterization of the polycomb repressor complex 1 binding partner ubiquitin specific protease 11." Thesis, Imperial College London, 2013. http://hdl.handle.net/10044/1/39355.

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Ubiquitin Specific Protease 11 (USP11), USP4 and USP15 are highly conserved and are characterised by an N-terminal 'domain present in ubiquitin specific proteases' (DUSP) and 'ubiquitin-like' (UBL) domains. This DUSP-UBL (DU) domain is thought to be involved in substrate recognition. It was shown that USP11 co-purifies with human Polycomb Repressive Complex type 1 (PRC1) and regulates the stability of the E3 ligase component of PRC1 (Maertens et al, 2010). PRC1 repress transcription from the INK4a tumour suppressor locus. Hence knockdown of USP11 in primary human fibroblasts causes de-repressi

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Book chapters on the topic "Polycomb complex"

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Guo, Yiran, Yao Yu, and Gang Greg Wang. "Polycomb Repressive Complex 2 in Oncology." In Cancer Treatment and Research. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-45654-1_9.

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Liu, Xin. "A Structural Perspective on Gene Repression by Polycomb Repressive Complex 2." In Subcellular Biochemistry. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-58971-4_17.

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Shirai, Manabu, Yoshihiro Takihara, and Takayuki Morisaki. "Pcgf5 Contributes to PRC1 (Polycomb Repressive Complex 1) in Developing Cardiac Cells." In Etiology and Morphogenesis of Congenital Heart Disease. Springer Japan, 2016. http://dx.doi.org/10.1007/978-4-431-54628-3_43.

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Brahmachari, Vani, and Shruti Jain. "Polycomb Complexes." In Encyclopedia of Systems Biology. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4419-9863-7_854.

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Luo, Ming, Mingzhu Luo, Fred Berger, E. S. Dennis, Jim W. Peacock, and Abed Chaudhury. "DNA-METHYLTRANSFERASE 1 is a Member of FIS Polycomb Complex and is Involved in Seed Development in Arabidopsis." In Biotechnology and Sustainable Agriculture 2006 and Beyond. Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-6635-1_16.

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Palacios, Daniela. "The Dynamics of Polycomb Complexes." In Methods in Molecular Biology. Springer New York, 2016. http://dx.doi.org/10.1007/978-1-4939-6380-5_12.

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Duarte-Aké, Fátima, Geovanny Nic-Can, and Clelia De-la-Peña. "Somatic Embryogenesis: Polycomb Complexes Control Cell-to-Embryo Transition." In Epigenetics in Plants of Agronomic Importance: Fundamentals and Applications. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-14760-0_13.

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Vidal, Miguel. "Polycomb Complexes: Chromatin Regulators Required for Cell Diversity and Tissue Homeostasis." In Transcriptional and Epigenetic Mechanisms Regulating Normal and Aberrant Blood Cell Development. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-45198-0_5.

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Paro, Renato, Ueli Grossniklaus, Raffaella Santoro, and Anton Wutz. "Cellular Memory." In Introduction to Epigenetics. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-68670-3_3.

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AbstractThe identity of cells in an organism is largely defined by their specific transcriptional profile. During cell division, these profiles need to be faithfully inherited to the daughter cells to ensure the maintenance of cell structure and function in a cell lineage. Here, you will learn how two groups of chromatin regulators, the Polycomb group (PcG) and the Trithorax group (TrxG), act in an antagonistic manner to maintain differential gene expression states. Members of the PcG cooperate in large multiprotein complexes to modify histones with repressive marks, resulting in condensed chr

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Holoch, D., and R. Margueron. "Polycomb Repressive Complex 2 Structure and Function." In Polycomb Group Proteins. Elsevier, 2017. http://dx.doi.org/10.1016/b978-0-12-809737-3.00009-x.

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Conference papers on the topic "Polycomb complex"

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Iwata, Shintaro. "Abstract 4898: Polycomb group molecule PHC3 regulates polycomb complex composition and prognosis of osteosarcoma." In Proceedings: AACR 101st Annual Meeting 2010‐‐ Apr 17‐21, 2010; Washington, DC. American Association for Cancer Research, 2010. http://dx.doi.org/10.1158/1538-7445.am10-4898.

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Cao, Qi, Ram Mani, Bushra Ateeq, et al. "Abstract 2795: An onco-protein axis linking polycomb repressive complex 2 and polycomb repressive complex 1 through miRNAs in cancer." In Proceedings: AACR 102nd Annual Meeting 2011‐‐ Apr 2‐6, 2011; Orlando, FL. American Association for Cancer Research, 2011. http://dx.doi.org/10.1158/1538-7445.am2011-2795.

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ZHU, Junyu, Lili Li, Connie W. Hui, et al. "Abstract 2923: Targeting the polycomb repressive complex-2 related proteins in nasopharyngeal carcinoma." In Proceedings: AACR Annual Meeting 2020; April 27-28, 2020 and June 22-24, 2020; Philadelphia, PA. American Association for Cancer Research, 2020. http://dx.doi.org/10.1158/1538-7445.am2020-2923.

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Chen, Fan, and Christine F. Brainson. "Abstract 5189: Activity of polycomb repressive complex 2 determines sensitivity to epigenetic therapy." In Proceedings: AACR Annual Meeting 2019; March 29-April 3, 2019; Atlanta, GA. American Association for Cancer Research, 2019. http://dx.doi.org/10.1158/1538-7445.sabcs18-5189.

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Chen, Fan, and Christine F. Brainson. "Abstract 5189: Activity of polycomb repressive complex 2 determines sensitivity to epigenetic therapy." In Proceedings: AACR Annual Meeting 2019; March 29-April 3, 2019; Atlanta, GA. American Association for Cancer Research, 2019. http://dx.doi.org/10.1158/1538-7445.am2019-5189.

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Bakhtiari, Mojtaba, Aria L. Byrd, Fan Chen, Alexsandr Lukyanchuk, Tanner J. DuCote, and Christine Fillmore Brainson. "Abstract PR03: Metabolic control of Polycomb Repressive Complex 2 in Lung Disease and Lung Cancer." In Abstracts: AACR Special Virtual Conference on Epigenetics and Metabolism; October 15-16, 2020. American Association for Cancer Research, 2020. http://dx.doi.org/10.1158/1538-7445.epimetab20-pr03.

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Bentrop, M., C. Vokuhl, D. von Schweinitz, and R. Kappler. "Inhibition of the polycomb repressive complex 1 (PRC1) as a therapeutic option in childhood liver tumors." In 32. Jahrestagung der Kind-Philipp-Stiftung für pädiatrisch onkologische Forschung. Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-1687161.

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Crosby, Lynn M., and Christopher Waters. "A Role For The Polycomb Repressor Complex 2 Protein EZH2 In Rat Alveolar Type II Cell Wound Healing." In American Thoracic Society 2011 International Conference, May 13-18, 2011 • Denver Colorado. American Thoracic Society, 2011. http://dx.doi.org/10.1164/ajrccm-conference.2011.183.1_meetingabstracts.a5108.

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Hamaidia, Malik, Clotilde Hoyos, and Luc L. Willems. "Abstract 3800: Inhibition of Polycomb Repressive Complex 2 EZH2 lysine methyltransferase improves tumoricidal activity of macrophages towards mesothelioma cells." In Proceedings: AACR Annual Meeting 2018; April 14-18, 2018; Chicago, IL. American Association for Cancer Research, 2018. http://dx.doi.org/10.1158/1538-7445.am2018-3800.

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Qian, Tingting, Jeong-Yeon Lee, Hyun-Jun Kim, and Gu Kong. "Abstract LB-96: Id1 enhances RING1b E3 ubiquitin ligase activity through the Mel-18/Bmi-1 polycomb group complex." In Proceedings: AACR 101st Annual Meeting 2010‐‐ Apr 17‐21, 2010; Washington, DC. American Association for Cancer Research, 2010. http://dx.doi.org/10.1158/1538-7445.am10-lb-96.

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Reports on the topic "Polycomb complex"

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Ohad, Nir, and Robert Fischer. Regulation of plant development by polycomb group proteins. United States Department of Agriculture, 2008. http://dx.doi.org/10.32747/2008.7695858.bard.

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Our genetic and molecular studies have indicated that FIE a WD-repeat Polycomb group (PcG) protein takes part in multi-component protein complexes. We have shown that FIE PcG protein represses inappropriate programs of development during the reproductive and vegetative phases of the Arabidopsis life cycle. Moreover, we have shown that FIE represses the expression of key regulatory genes that promote flowering (AG and LFY), embryogenesis (LEC1), and shoot formation (KNAT1). These results suggest that the FIE PcG protein participates in the formation of distinct PcG complexes that repress inappr

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Ohad, Nir, and Robert Fischer. Regulation of Fertilization-Independent Endosperm Development by Polycomb Proteins. United States Department of Agriculture, 2004. http://dx.doi.org/10.32747/2004.7695869.bard.

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Arabidopsis mutants that we have isolated, encode for fertilization-independent endosperm (fie), fertilization-independent seed2 (fis2) and medea (mea) genes, act in the female gametophyte and allow endosperm to develop without fertilization when mutated. We cloned the FIE and MEA genes and showed that they encode WD and SET domain polycomb (Pc G) proteins, respectively. Homologous proteins of FIE and MEA in other organisms are known to regulate gene transcription by modulating chromatin structure. Based on our results, we proposed a model whereby both FIE and MEA interact to suppress transcri

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Ohad, Nir, and Robert Fischer. Control of Fertilization-Independent Development by the FIE1 Gene. United States Department of Agriculture, 2000. http://dx.doi.org/10.32747/2000.7575290.bard.

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A fundamental problem in biology is to understand how fertilization initiates reproductive development. During plant reproduction, one sperm cell fuses with the egg to form an embryo, whereas a second sperm cell fuses with the adjacent central cell nucleus to form the endosperm tissue that supports embryo and/or seedling development. To understand the mechanisms that initiate reproduction, we have isolated mutants of Arabidopsis that allow for replication of the central cell and subsequent endosperm development without fertilization. In this project we have cloned the MEA gene and showed that

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Ori, Naomi, and Mark Estelle. Specific mediators of auxin activity during tomato leaf and fruit development. United States Department of Agriculture, 2012. http://dx.doi.org/10.32747/2012.7597921.bard.

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The plant hormone auxin is involved in numerous developmental processes, including leaf and fruit development. The tomato (Solanumlycopersicum) gene ENTIRE (E) encodes an auxin-response inhibitor from the Aux/IAA family. While most loss-offunction mutations in Aux/IAA genes are similar to the wild type due to genetic redundancy, entire (e) mutants show specific effects on leaf and fruit development. e mutants have simple leaves, in contrast to the compound leaves of wild type tomatoes. In addition, e plants produce parthenocarpic fruits, in which fruit set occurs independently of fertilization

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