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Nandakumar V, Stehling-Sun S, Kerwin W, Funnell A, Stamatoyannopoulos J. Abstract PO-048: Visual nucleotyping identifies chromatin phenotypes triggered by genome editing. Clin Cancer Res 2021. [DOI: 10.1158/1557-3265.adi21-po-048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Optical microscopy has the potential to provide rapid phenotypic readout of cellular states. Here we show that automated optical phenotyping of nuclei is capable of rapidly and reliably discriminating the effects of targeted mutations to chromatin remodelers, which are major players in oncogenesis and targets for therapeutic intervention. Smarca4 is a chromatin remodeler frequently mutated in cancer. We investigated whether nuclear morphometry and concomitant supervised machine learning approaches on standard optical microscopy images of nuclear-DNA stained cells could reliably discern Smarca4-/- lung cancer cells from isogenic Smarca4+/+ clones that were derived by precision genome editing. We used TALEN-based editing on A549 lung cancer cells to generate isogenic Smarca4+/+ clones, performed conventional 2D 40x optical imaging of DAPI-stained cell nuclei from parental (Smarca4-/-) and edited (Smarca4+/+) cells, quantified a set of numerical parameters (features) that reflected various intuitive attributes of nuclear morphology and chromatin texture of the cell nuclei, and finally tested the efficacy of supervised machine learning algorithms containing these features to distinguish between the two cell categories. We found that the parental and edited A549 cells exhibited similar nuclear size and shape attributes but showed measurable differences in subtle chromatin texture. Additionally, classifiers based on these chromatin texture features were able to accurately distinguish the smarca4-rescued cells from the smarca4-mutant cells. Our results thus demonstrate the promise of quantitative chromatin phenotyping for genome editing applications in oncology.
Citation Format: Vivek Nandakumar, Sandra Stehling-Sun, William Kerwin, Alister Funnell, John Stamatoyannopoulos. Visual nucleotyping identifies chromatin phenotypes triggered by genome editing [abstract]. In: Proceedings of the AACR Virtual Special Conference on Artificial Intelligence, Diagnosis, and Imaging; 2021 Jan 13-14. Philadelphia (PA): AACR; Clin Cancer Res 2021;27(5_Suppl):Abstract nr PO-048.
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Lazar JE, Stehling-Sun S, Nandakumar V, Wang H, Chee DR, Howard NP, Acosta R, Dunn D, Diegel M, Neri F, Castillo A, Ibarrientos S, Lee K, Lescano N, Van Biber B, Nelson J, Halow J, Sandstrom R, Bates D, Urnov FD, Stamatoyannopoulos JA, Funnell APW. Global Regulatory DNA Potentiation by SMARCA4 Propagates to Selective Gene Expression Programs via Domain-Level Remodeling. Cell Rep 2020; 31:107788. [PMID: 32579918 DOI: 10.1016/j.celrep.2020.107788] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Lazar JE, Stehling-Sun S, Nandakumar V, Wang H, Chee DR, Howard NP, Acosta R, Dunn D, Diegel M, Neri F, Castillo A, Ibarrientos S, Lee K, Lescano N, Van Biber B, Nelson J, Halow J, Sandstrom R, Bates D, Urnov FD, Stamatoyannopoulos JA, Funnell APW. Global Regulatory DNA Potentiation by SMARCA4 Propagates to Selective Gene Expression Programs via Domain-Level Remodeling. Cell Rep 2020; 31:107676. [PMID: 32460018 DOI: 10.1016/j.celrep.2020.107676] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 12/23/2019] [Accepted: 04/30/2020] [Indexed: 01/02/2023] Open
Abstract
The human genome encodes millions of regulatory elements, of which only a small fraction are active within a given cell type. Little is known about the global impact of chromatin remodelers on regulatory DNA landscapes and how this translates to gene expression. We use precision genome engineering to reawaken homozygously inactivated SMARCA4, a central ATPase of the human SWI/SNF chromatin remodeling complex, in lung adenocarcinoma cells. Here, we combine DNase I hypersensitivity, histone modification, and transcriptional profiling to show that SMARCA4 dramatically increases both the number and magnitude of accessible chromatin sites genome-wide, chiefly by unmasking sites of low regulatory factor occupancy. By contrast, transcriptional changes are concentrated within well-demarcated remodeling domains wherein expression of specific genes is gated by both distal element activation and promoter chromatin configuration. Our results provide a perspective on how global chromatin remodeling activity is translated to gene expression via regulatory DNA.
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Affiliation(s)
- John E Lazar
- Departments of Genome Sciences and Medicine, University of Washington School of Medicine, Seattle, WA 98195, USA; Altius Institute for Biomedical Sciences, Seattle, WA 98121, USA
| | | | - Vivek Nandakumar
- Altius Institute for Biomedical Sciences, Seattle, WA 98121, USA
| | - Hao Wang
- Altius Institute for Biomedical Sciences, Seattle, WA 98121, USA
| | - Daniel R Chee
- Departments of Genome Sciences and Medicine, University of Washington School of Medicine, Seattle, WA 98195, USA; Altius Institute for Biomedical Sciences, Seattle, WA 98121, USA
| | | | - Reyes Acosta
- Altius Institute for Biomedical Sciences, Seattle, WA 98121, USA
| | - Douglass Dunn
- Altius Institute for Biomedical Sciences, Seattle, WA 98121, USA
| | - Morgan Diegel
- Altius Institute for Biomedical Sciences, Seattle, WA 98121, USA
| | - Fidencio Neri
- Altius Institute for Biomedical Sciences, Seattle, WA 98121, USA
| | - Andres Castillo
- Altius Institute for Biomedical Sciences, Seattle, WA 98121, USA
| | - Sean Ibarrientos
- Altius Institute for Biomedical Sciences, Seattle, WA 98121, USA
| | - Kristen Lee
- Altius Institute for Biomedical Sciences, Seattle, WA 98121, USA
| | - Ninnia Lescano
- Altius Institute for Biomedical Sciences, Seattle, WA 98121, USA
| | - Ben Van Biber
- Altius Institute for Biomedical Sciences, Seattle, WA 98121, USA
| | - Jemma Nelson
- Altius Institute for Biomedical Sciences, Seattle, WA 98121, USA
| | - Jessica Halow
- Altius Institute for Biomedical Sciences, Seattle, WA 98121, USA
| | | | - Daniel Bates
- Altius Institute for Biomedical Sciences, Seattle, WA 98121, USA
| | - Fyodor D Urnov
- Altius Institute for Biomedical Sciences, Seattle, WA 98121, USA
| | - John A Stamatoyannopoulos
- Departments of Genome Sciences and Medicine, University of Washington School of Medicine, Seattle, WA 98195, USA; Altius Institute for Biomedical Sciences, Seattle, WA 98121, USA.
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Vierstra J, Reik A, Chang KH, Stehling-Sun S, Zhou Y, Hinkley SJ, Paschon DE, Zhang L, Psatha N, Bendana YR, O'Neil CM, Song AH, Mich AK, Liu PQ, Lee G, Bauer DE, Holmes MC, Orkin SH, Papayannopoulou T, Stamatoyannopoulos G, Rebar EJ, Gregory PD, Urnov FD, Stamatoyannopoulos JA. Functional footprinting of regulatory DNA. Nat Methods 2015; 12:927-30. [PMID: 26322838 PMCID: PMC5381659 DOI: 10.1038/nmeth.3554] [Citation(s) in RCA: 106] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Accepted: 07/30/2015] [Indexed: 12/19/2022]
Abstract
Regulatory regions harbor multiple transcription factor recognition sites; however, the contribution of individual sites to regulatory function remains challenging to define. We describe a facile approach that exploits the error-prone nature of genome editing-induced double-strand break repair to map functional elements within regulatory DNA at nucleotide resolution. We demonstrate the approach on a human erythroid enhancer, revealing single TF recognition sites that gate the majority of downstream regulatory function.
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Affiliation(s)
- Jeff Vierstra
- Department of Genome Sciences, University of Washington, Seattle, Washington, USA
| | - Andreas Reik
- Sangamo BioSciences, Pt. Richmond, California, USA
| | - Kai-Hsin Chang
- Department of Medicine, Division of Hematology, University of Washington, Seattle, Washington, USA
| | - Sandra Stehling-Sun
- Department of Genome Sciences, University of Washington, Seattle, Washington, USA
| | - Yuanyue Zhou
- Sangamo BioSciences, Pt. Richmond, California, USA
| | | | | | - Lei Zhang
- Sangamo BioSciences, Pt. Richmond, California, USA
| | - Nikoletta Psatha
- Department of Medicine, Division of Hematology, University of Washington, Seattle, Washington, USA
| | | | | | | | | | - Pei-Qi Liu
- Sangamo BioSciences, Pt. Richmond, California, USA
| | - Gary Lee
- Sangamo BioSciences, Pt. Richmond, California, USA
| | - Daniel E Bauer
- Boston Children's Hospital, Division of Hematology/Oncology, Boston, Massachusetts, USA
| | | | - Stuart H Orkin
- Boston Children's Hospital, Division of Hematology/Oncology, Boston, Massachusetts, USA
| | - Thalia Papayannopoulou
- Department of Medicine, Division of Hematology, University of Washington, Seattle, Washington, USA
| | - George Stamatoyannopoulos
- Department of Medicine, Division of Medical Genetics, University of Washington, Seattle, Washington, USA
| | | | | | | | - John A Stamatoyannopoulos
- Department of Genome Sciences, University of Washington, Seattle, Washington, USA.,Department of Medicine, Division of Oncology, University of Washington, Seattle, Washington, USA
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Reik A, Chang KH, Vierstra J, Psatha N, Stehling-Sun S, Zhou Y, O'Neil CM, Mich A, Miller JC, Lee G, Tan S, Jiang H, Stamatoyannopoulos G, Papayannopoulou T, Rebar EJ, Gregory PD, Stamatoyannopoulos JA, Urnov FD. 53. From GWAS To the Clinic: Genome-Editing the Human BCL11A Erythroid Enhancer for Fetal Globin Elevation in the Hemoglobinopathies. Mol Ther 2015. [DOI: 10.1016/s1525-0016(16)33658-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Vierstra J, Rynes E, Sandstrom R, Zhang M, Canfield T, Hansen RS, Stehling-Sun S, Sabo PJ, Byron R, Humbert R, Thurman RE, Johnson AK, Vong S, Lee K, Bates D, Neri F, Diegel M, Giste E, Haugen E, Dunn D, Wilken MS, Josefowicz S, Samstein R, Chang KH, Eichler EE, De Bruijn M, Reh TA, Skoultchi A, Rudensky A, Orkin SH, Papayannopoulou T, Treuting PM, Selleri L, Kaul R, Groudine M, Bender MA, Stamatoyannopoulos JA. Mouse regulatory DNA landscapes reveal global principles of cis-regulatory evolution. Science 2014; 346:1007-12. [PMID: 25411453 PMCID: PMC4337786 DOI: 10.1126/science.1246426] [Citation(s) in RCA: 186] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
To study the evolutionary dynamics of regulatory DNA, we mapped >1.3 million deoxyribonuclease I-hypersensitive sites (DHSs) in 45 mouse cell and tissue types, and systematically compared these with human DHS maps from orthologous compartments. We found that the mouse and human genomes have undergone extensive cis-regulatory rewiring that combines branch-specific evolutionary innovation and loss with widespread repurposing of conserved DHSs to alternative cell fates, and that this process is mediated by turnover of transcription factor (TF) recognition elements. Despite pervasive evolutionary remodeling of the location and content of individual cis-regulatory regions, within orthologous mouse and human cell types the global fraction of regulatory DNA bases encoding recognition sites for each TF has been strictly conserved. Our findings provide new insights into the evolutionary forces shaping mammalian regulatory DNA landscapes.
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Affiliation(s)
- Jeff Vierstra
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
| | - Eric Rynes
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
| | - Richard Sandstrom
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
| | - Miaohua Zhang
- Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Theresa Canfield
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
| | - R Scott Hansen
- Division of Medical Genetics, Department of Medicine, University of Washington, Seattle, WA 98195, USA
| | - Sandra Stehling-Sun
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
| | - Peter J Sabo
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
| | - Rachel Byron
- Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Richard Humbert
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
| | - Robert E Thurman
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
| | - Audra K Johnson
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
| | - Shinny Vong
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
| | - Kristen Lee
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
| | - Daniel Bates
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
| | - Fidencio Neri
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
| | - Morgan Diegel
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
| | - Erika Giste
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
| | - Eric Haugen
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
| | - Douglas Dunn
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
| | - Matthew S Wilken
- Department of Biological Structure, University of Washington, Seattle, WA 98195, USA
| | - Steven Josefowicz
- Immunology Program, Memorial Sloan-Kettering Cancer Center, New York, NY 10065, USA. Howard Hughes Medical Institute
| | - Robert Samstein
- Immunology Program, Memorial Sloan-Kettering Cancer Center, New York, NY 10065, USA. Howard Hughes Medical Institute
| | - Kai-Hsin Chang
- Division of Hematology, Department of Medicine, University of Washington, Seattle, WA 98195, USA
| | - Evan E Eichler
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA. Howard Hughes Medical Institute
| | - Marella De Bruijn
- Medical Research Council (MRC) Molecular Haematology Unit, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, Oxford OX3 9DS, UK
| | - Thomas A Reh
- Department of Biological Structure, University of Washington, Seattle, WA 98195, USA
| | - Arthur Skoultchi
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Alexander Rudensky
- Immunology Program, Memorial Sloan-Kettering Cancer Center, New York, NY 10065, USA. Howard Hughes Medical Institute
| | - Stuart H Orkin
- Howard Hughes Medical Institute. Division of Hematology/Oncology, Children's Hospital Boston and Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Stem Cell Institute, Harvard Medical School, Boston, MA 02115, USA
| | - Thalia Papayannopoulou
- Division of Hematology, Department of Medicine, University of Washington, Seattle, WA 98195, USA
| | - Piper M Treuting
- Department of Comparative Medicine, University of Washington, Seattle, WA 98195, USA
| | - Licia Selleri
- Department of Cell and Developmental Biology, Weill Medical College of Cornell University, New York, NY 10065, USA
| | - Rajinder Kaul
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA. Division of Medical Genetics, Department of Medicine, University of Washington, Seattle, WA 98195, USA
| | - Mark Groudine
- Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA. Department of Radiation Oncology, University of Washington, Seattle, WA 98109, USA
| | - M A Bender
- Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA. Department of Pediatrics, University of Washington, Seattle, WA 98195, USA
| | - John A Stamatoyannopoulos
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA. Division of Oncology, Department of Medicine, University of Washington, Seattle, WA 98195, USA.
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Maurano MT, Humbert R, Rynes E, Thurman RE, Haugen E, Wang H, Reynolds AP, Sandstrom R, Qu H, Brody J, Shafer A, Neri F, Lee K, Kutyavin T, Stehling-Sun S, Johnson AK, Canfield TK, Giste E, Diegel M, Bates D, Hansen RS, Neph S, Sabo PJ, Heimfeld S, Raubitschek A, Ziegler S, Cotsapas C, Sotoodehnia N, Glass I, Sunyaev SR, Kaul R, Stamatoyannopoulos JA. Systematic localization of common disease-associated variation in regulatory DNA. Science 2012; 337:1190-5. [PMID: 22955828 DOI: 10.1126/science.1222794] [Citation(s) in RCA: 2409] [Impact Index Per Article: 200.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Genome-wide association studies have identified many noncoding variants associated with common diseases and traits. We show that these variants are concentrated in regulatory DNA marked by deoxyribonuclease I (DNase I) hypersensitive sites (DHSs). Eighty-eight percent of such DHSs are active during fetal development and are enriched in variants associated with gestational exposure-related phenotypes. We identified distant gene targets for hundreds of variant-containing DHSs that may explain phenotype associations. Disease-associated variants systematically perturb transcription factor recognition sequences, frequently alter allelic chromatin states, and form regulatory networks. We also demonstrated tissue-selective enrichment of more weakly disease-associated variants within DHSs and the de novo identification of pathogenic cell types for Crohn's disease, multiple sclerosis, and an electrocardiogram trait, without prior knowledge of physiological mechanisms. Our results suggest pervasive involvement of regulatory DNA variation in common human disease and provide pathogenic insights into diverse disorders.
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Affiliation(s)
- Matthew T Maurano
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
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Maier AT, Stehling-Sun S, Offenburger SL, Lohmann JU. The bZIP Transcription Factor PERIANTHIA: A Multifunctional Hub for Meristem Control. Front Plant Sci 2011; 2:79. [PMID: 22645551 PMCID: PMC3355747 DOI: 10.3389/fpls.2011.00079] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2011] [Accepted: 10/26/2011] [Indexed: 05/19/2023]
Abstract
As sessile organisms, plants are exposed to extreme variations in environmental conditions over the course of their lives. Since plants grow and initiate new organs continuously, they have to modulate the underlying developmental program accordingly to cope with this challenge. At the heart of this extraordinary developmental plasticity are pluripotent stem cells, which are maintained during the entire life-cycle of the plant and that are embedded within dynamic stem cell niches. While the complex regulatory principles of plant stem cell control under artificial constant growth conditions begin to emerge, virtually nothing is known about how this circuit adapts to variations in the environment. In addition to the local feedback system constituted by the homeodomain transcription factor WUSCHEL (WUS) and the CLAVATA signaling cascade in the center of the shoot apical meristem (SAM), the bZIP transcription factor PERIANTHIA (PAN) not only has a broader expression domain in SAM and flowers, but also carries out more diverse functions in meristem maintenance: pan mutants show alterations in environmental response, shoot meristem size, floral organ number, and exhibit severe defects in termination of floral stem cells in an environment dependent fashion. Genetic and genomic analyses indicate that PAN interacts with a plethora of developmental pathways including light, plant hormone, and meristem control systems, suggesting that PAN is as an important regulatory node in the network of plant stem cell control.
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Affiliation(s)
- Annette T. Maier
- Department of Stem Cell Biology, Centre for Organismal Studies Heidelberg, Heidelberg UniversityHeidelberg, Germany
- Max Planck Institute for Developmental BiologyTübingen, Germany
| | | | | | - Jan U. Lohmann
- Department of Stem Cell Biology, Centre for Organismal Studies Heidelberg, Heidelberg UniversityHeidelberg, Germany
- *Correspondence: Jan U. Lohmann, Department of Stem Cell Biology, Centre for Organismal Studies, University of Heidelberg, Im Neuenheimer Feld 230, D-69120 Heidelberg, Germany. e-mail:
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Maier AT, Stehling-Sun S, Wollmann H, Demar M, Hong RL, Haubeiss S, Weigel D, Lohmann JU. Dual roles of the bZIP transcription factor PERIANTHIA in the control of floral architecture and homeotic gene expression. Development 2009; 136:1613-20. [PMID: 19395639 DOI: 10.1242/dev.033647] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Flowers develop from floral meristems, which harbor stem cells that support the growth of floral organs. The MADS domain transcription factor AGAMOUS (AG) plays a central role in floral patterning and is required not only for the specification of the two reproductive organ types, but also for termination of stem cell fate. Using a highly conserved cis-regulatory motif as bait, we identified the bZIP transcription factor PERIANTHIA (PAN) as a direct regulator of AG in Arabidopsis. PAN and AG expression domains overlap, and mutations in either the PAN-binding site or PAN itself abolish the activity of a reporter devoid of redundant elements. Whereas under long-day conditions pan mutants have merely altered floral organ number, they display in addition typical AG loss-of-function phenotypes when grown under short days. Consistently, we found reduced AG RNA levels in these flowers. Finally, we show that PAN expression persists in ag mutant flowers, suggesting that PAN and AG are engaged in a negative-feedback loop, which might be mediated by the stem-cell-inducing transcription factor WUSCHEL (WUS).
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Affiliation(s)
- Annette T Maier
- Max-Planck Institute for Developmental Biology, D-72076 Tübingen, Germany
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Stehling-Sun S, Dade J, Nutt SL, DeKoter RP, Camargo FD. Regulation of lymphoid versus myeloid fate 'choice' by the transcription factor Mef2c. Nat Immunol 2009; 10:289-96. [DOI: 10.1038/ni.1694] [Citation(s) in RCA: 99] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2008] [Accepted: 12/02/2008] [Indexed: 12/22/2022]
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