skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: A unique stylopod patterning mechanism by Shox2-controlled osteogenesis

Journal Article · · Development (Cambridge)
DOI:https://doi.org/10.1242/dev.138750· OSTI ID:1393061
 [1];  [2];  [2];  [3];  [4];  [5];  [4];  [4];  [2];  [1];  [1];  [6];  [6];  [7];  [8];  [4]; ORCiD logo [2]
  1. Tulane Univ., New Orleans, LA (United States)
  2. Tulane Univ., New Orleans, LA (United States); Fujian Normal Univ., Fujian (People's Republic of China)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  4. Univ. of Calgary, Calgary, AB (Canada)
  5. Tulane Univ., New Orleans, LA (United States); Sichuan Univ., Sichuan (People's Republic of China)
  6. Icahn School of Medicine at Mount Sinai, New York, NY (United States)
  7. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); USDOE Joint Genome Institute (JGI), Walnut Creek, CA (United States); Univ. of California, Merced, CA (United States)
  8. Fujian Normal Univ., Fujian (People's Republic of China)

Here, vertebrate appendage patterning is programmed by Hox-TALE factorbound regulatory elements. However, it remains unclear which cell lineages are commissioned by Hox-TALE factors to generate regional specific patterns and whether other Hox-TALE co-factors exist. In this study, we investigated the transcriptional mechanisms controlled by the Shox2 transcriptional regulator in limb patterning. Harnessing an osteogenic lineage-specific Shox2 inactivation approach we show that despite widespread Shox2 expression in multiple cell lineages, lack of the stylopod observed upon Shox2 deficiency is a specific result of Shox2 loss of function in the osteogenic lineage. ChIP-Seq revealed robust interaction of Shox2 with cis-regulatory enhancers clustering around skeletogenic genes that are also bound by Hox-TALE factors, supporting a lineage autonomous function of Shox2 in osteogenic lineage fate determination and skeleton patterning. Pbx ChIP-Seq further allowed the genome-wide identification of cis-regulatory modules exhibiting co-occupancy of Pbx, Meis and Shox2 transcriptional regulators. Integrative analysis of ChIP-Seq and RNA-Seq data and transgenic enhancer assays indicate that Shox2 patterns the stylopod as a repressor via interaction with enhancers active in the proximal limb mesenchyme and antagonizes the repressive function of TALE factors in osteogenesis.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
DOE Contract Number:
AC02-05CH11231
OSTI ID:
1393061
Journal Information:
Development (Cambridge), Vol. 143, Issue 14; ISSN 0950-1991
Publisher:
Company of Biologists
Country of Publication:
United States
Language:
English

References (54)

Hoxa2 Selectively Enhances Meis Binding to Change a Branchial Arch Ground State journal February 2015
Tissue-specific SMARCA4 binding at active and repressed regulatory elements during embryogenesis journal April 2014
Gli3 and Plzf cooperate in proximal limb patterning at early stages of limb development journal July 2005
Shox2 regulates progression through chondrogenesis in the mouse proximal limb journal October 2012
Pbx homeodomain proteins: TALEnted regulators of limb patterning and outgrowth journal March 2011
Meis Cofactors Control HDAC and CBP Accessibility at Hox-Regulated Promoters during Zebrafish Embryogenesis journal October 2009
A mouse model for human short-stature syndromes identifies Shox2 as an upstream regulator of Runx2 during long-bone development journal March 2006
Distinguishing the contributions of the perichondrium, cartilage, and vascular endothelium to skeletal development journal May 2004
Low Affinity Binding Site Clusters Confer Hox Specificity and Regulatory Robustness journal January 2015
Mechanisms of retinoic acid signalling and its roles in organ and limb development journal January 2015
Topological domains in mammalian genomes identified by analysis of chromatin interactions journal April 2012
Shox2 is essential for the differentiation of cardiac pacemaker cells by repressing Nkx2-5 journal March 2009
Pbx1 Represses Osteoblastogenesis by Blocking Hoxa10-Mediated Recruitment of Chromatin Remodeling Factors journal May 2010
Mice with an anterior cleft of the palate survive neonatal lethality journal January 2008
Identification and characterization of Hoxa9 binding sites in hematopoietic cells journal January 2012
Pitx1 broadly associates with limb enhancers and is enriched on hindlimb cis-regulatory elements journal February 2013
DNA-dependent formation of transcription factor pairs alters their binding specificity journal November 2015
Early developmental arrest of mammalian limbs lacking HoxA/HoxD gene function journal June 2005
Ribosome-Mediated Specificity in Hox mRNA Translation and Vertebrate Tissue Patterning journal April 2011
Expression and activity of osteoblast-targeted Cre recombinase transgenes in murine skeletal tissues journal January 2004
Development of the Endochondral Skeleton journal January 2013
Ectopic Meis1 expression in the mouse limb bud alters P-D patterning in a Pbx1-independent manner journal January 2009
Hox cofactors in vertebrate development journal March 2006
A Regulatory Archipelago Controls Hox Genes Transcription in Digits journal November 2011
Genetic Interactions Between Shox2 and Hox Genes During the Regional Growth and Development of the Mouse Limb journal September 2014
FGF18 is required for normal cell proliferation and differentiation during osteogenesis and chondrogenesis journal April 2002
HAND2 Targets Define a Network of Transcriptional Regulators that Compartmentalize the Early Limb Bud Mesenchyme journal November 2014
Col2a1-directed expression of Cre recombinase in differentiating chondrocytes in transgenic mice journal February 2000
Ancient Pbx-Hox signatures define hundreds of vertebrate developmental enhancers journal December 2011
Antibody-based therapies for malaria journal November 2005
Analysis of the DNA-Binding Profile and Function of TALE Homeoproteins Reveals Their Specialization and Specific Interactions with Hox Genes/Proteins journal April 2013
Key pathways regulated by HoxA9,10,11/HoxD9,10,11 during limb development journal July 2015
Comparative transgenic analysis of enhancers from the human SHOX and mouse Shox2 genomic regions journal April 2013
A map of the cis-regulatory sequences in the mouse genome journal July 2012
Cofactor Binding Evokes Latent Differences in DNA Binding Specificity between Hox Proteins journal December 2011
The Osteoblast to Osteocyte Transition: Epigenetic Changes and Response to the Vitamin D 3 Hormone journal July 2014
Generation of Shox2-Cre allele for tissue specific manipulation of genes in the developing heart, palate, and limb : Generation and Application of journal May 2013
Hox11 genes are required for regional patterning and integration of muscle, tendon and bone journal October 2013
Rethinking the proximodistal axis of the vertebrate limb in the molecular era journal June 2007
Genome-wide identification of signaling center enhancers in the developing limb journal October 2014
Shox2 function couples neural, muscular and skeletal development in the proximal forelimb journal February 2011
Homeobox genes d11–d13 and a13 control mouse autopod cortical bone and joint formation journal June 2010
VISTA Enhancer Browser--a database of tissue-specific human enhancers journal January 2007
ChIP-seq accurately predicts tissue-specific activity of enhancers journal February 2009
A genome-scale analysis of the cis-regulatory circuitry underlying sonic hedgehog-mediated patterning of the mammalian limb journal October 2008
Target analysis by integration of transcriptome and ChIP-seq data with BETA journal November 2013
Pitx2-microRNA pathway that delimits sinoatrial node development and inhibits predisposition to atrial fibrillation journal June 2014
Genomic occupancy of Runx2 with global expression profiling identifies a novel dimension to control of osteoblastogenesis journal January 2014
Genetic Regulation of Sinoatrial Node Development and Pacemaker Program in the Venous Pole journal November 2015
A common Shox2-Nkx2-5 antagonistic mechanism primes the pacemaker cell fate in the pulmonary vein myocardium and sinoatrial node journal July 2015
Shox2-deficient mice exhibit a rare type of incomplete clefting of the secondary palate journal October 2005
Shox2 is required for chondrocyte proliferation and maturation in proximal limb skeleton journal June 2007
A comparative encyclopedia of DNA elements in the mouse genome journal November 2014
The role of Hox genes during vertebrate limb development journal August 2007