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McCoy AM, Lakhdari O, Shome S, Caoili K, Hernandez GE, Aghaeepour N, Butcher LD, Fisch K, Prince LS. Sp3 is essential for normal lung morphogenesis and cell cycle progression during mouse embryonic development. Development 2023; 150:dev200839. [PMID: 36762637 PMCID: PMC10110423 DOI: 10.1242/dev.200839] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 01/18/2023] [Indexed: 02/11/2023]
Abstract
Members of the Sp family of transcription factors regulate gene expression via binding GC boxes within promoter regions. Unlike Sp1, which stimulates transcription, the closely related Sp3 can either repress or activate gene expression and is required for perinatal survival in mice. Here, we use RNA-seq and cellular phenotyping to show how Sp3 regulates murine fetal cell differentiation and proliferation. Homozygous Sp3-/- mice were smaller than wild-type and Sp+/- littermates, died soon after birth and had abnormal lung morphogenesis. RNA-seq of Sp3-/- fetal lung mesenchymal cells identified alterations in extracellular matrix production, developmental signaling pathways and myofibroblast/lipofibroblast differentiation. The lungs of Sp3-/- mice contained multiple structural defects, with abnormal endothelial cell morphology, lack of elastic fiber formation, and accumulation of lipid droplets within mesenchymal lipofibroblasts. Sp3-/- cells and mice also displayed cell cycle arrest, with accumulation in G0/G1 and reduced expression of numerous cell cycle regulators including Ccne1. These data detail the global impact of Sp3 on in vivo mouse gene expression and development.
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Affiliation(s)
- Alyssa M. McCoy
- Department of Pediatrics, University of California, San Diego, La Jolla, CA 92093, USA
- Department of Pharmacology, Meharry Medical College, Nashville, TN 37208, USA
| | - Omar Lakhdari
- Department of Pediatrics, University of California, San Diego, La Jolla, CA 92093, USA
| | - Sayane Shome
- Department of Pediatrics, Stanford University, Palo Alto, CA 94304, USA
- Department of Anesthesiology, Perioperative and Pain Management, Stanford University, Palo Alto, CA 94305, USA
| | - Kaitlin Caoili
- Department of Pediatrics, Stanford University, Palo Alto, CA 94304, USA
| | - Gilberto E. Hernandez
- Department of Pediatrics, University of California, San Diego, La Jolla, CA 92093, USA
| | - Nima Aghaeepour
- Department of Pediatrics, Stanford University, Palo Alto, CA 94304, USA
- Department of Anesthesiology, Perioperative and Pain Management, Stanford University, Palo Alto, CA 94305, USA
| | | | - Kathleen Fisch
- Department of Obstetrics, Gynecology, and Reproductive Services, University of California, San Diego, La Jolla, CA 92093, USA
- Center for Computational Biology & Bioinformatics, University of California, San Diego, La Jolla, CA 92093, USA
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Friocourt F, Chédotal A. The Robo3 receptor, a key player in the development, evolution, and function of commissural systems. Dev Neurobiol 2017; 77:876-890. [DOI: 10.1002/dneu.22478] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 12/04/2016] [Accepted: 12/06/2016] [Indexed: 12/15/2022]
Affiliation(s)
- François Friocourt
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS, Institut de la Vision; 17 Rue Moreau Paris 75012 France
| | - Alain Chédotal
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS, Institut de la Vision; 17 Rue Moreau Paris 75012 France
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3
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Duval E, Bouyoucef M, Leclercq S, Baugé C, Boumédiene K. Hypoxia inducible factor 1 alpha down-regulates type i collagen through Sp3 transcription factor in human chondrocytes. IUBMB Life 2016; 68:756-63. [PMID: 27521280 DOI: 10.1002/iub.1539] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 07/14/2016] [Indexed: 11/05/2022]
Abstract
Cartilage engineering is one challenging issue in regenerative medicine. Low oxygen tension or hypoxia inducible factor-1 (HIF-1α) gene therapy are promising strategies in the field of cartilage repair. Previously, we showed that hypoxia and its mediator HIF-1 regulate matrix genes expression (collagens and aggrecan). Here, we investigated the molecular mechanism involved in the regulation of type I collagen (COL1A1) by HIF-1 in human articular chondrocytes. We show that HIF-1α reduces COL1A1 transcription, through a distal promoter (-2300 to -1816 bp upstream transcription initiation site), containing two GC boxes that bind Sp transcription factors (Sp1/Sp3). Sp1 acts as a positive regulator but is not induced by HIF-1. COL1A1 inhibition caused by HIF-1 implies only Sp3, which accumulates and competes Sp1 binding on COL1A1 promoter. Additionally, Sp3 ectopic expression inhibits COL1A1, while Sp3 knockdown counteracts the downregulation of COL1A1 induced by HIF-1. In conclusion, we established a new regulatory model of COL1A1 regulation by HIF-1, and bring out its relationship with Sp3 transcription factor. In a fundamental level, these findings give insights in the mechanisms controlling COL1A1 gene expression. This may be helpful to improve strategies to impair type I collagen expression during chondrocyte differentiation for cartilage engineering. © 2016 IUBMB Life, 68(9):756-763, 2016.
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Affiliation(s)
- Elise Duval
- EA4652, Equipe BioConnecT, UNICAEN, Caen, CS, 14032, France.,Normandie University, UFR de médecine, Caen, France
| | - Mouloud Bouyoucef
- EA4652, Equipe BioConnecT, UNICAEN, Caen, CS, 14032, France.,Normandie University, UFR de médecine, Caen, France
| | - Sylvain Leclercq
- EA4652, Equipe BioConnecT, UNICAEN, Caen, CS, 14032, France.,Normandie University, UFR de médecine, Caen, France.,Département De Chirurgie Orthopédique, Clinique Saint-Martin, Caen, 14000, France
| | - Catherine Baugé
- EA4652, Equipe BioConnecT, UNICAEN, Caen, CS, 14032, France.,Normandie University, UFR de médecine, Caen, France.,Fédération Hospitalo Universitaire SURFACE, Amiens, Rouen, Caen, France
| | - Karim Boumédiene
- EA4652, Equipe BioConnecT, UNICAEN, Caen, CS, 14032, France.,Normandie University, UFR de médecine, Caen, France.,Fédération Hospitalo Universitaire SURFACE, Amiens, Rouen, Caen, France
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