Abstract:
:Transcription factors (TFs) can regulate different sets of genes to determine specific cell types by means of combinatorial codes. We previously identified closely-spaced TF binding motifs located 8.2-8.5 kb 5' to the ATG of the murine Pou4f3 gene, a gene required for late hair cell (HC) differentiation and survival. These motifs, 100% conserved among four mammalian species, include a cluster of E-boxes preferred by TCF3/ATOH1 heterodimers as well as motifs for GATA factors and SP1. We hypothesized that these factors might interact to regulate the Pou4f3 gene and possibly induce a HC phenotype in non-sensory cells of the cochlea. Cochlear sensory epithelium explants were prepared from postnatal day 1.5 transgenic mice in which expression of GFP is driven by 8.5 kb of Pou4f3 5' genomic DNA (Pou4f3/GFP). Electroporation was used to transfect cells of the greater epithelial ridge with multiple plasmids encoding human ATOH1 (hATOH1), hTCF3 (also known as E2A or TEF2), hGATA3, and hSP1. hATOH1 or hTCF3 alone induced Pou4f3/GFP cells but hGATA3 and hSP1 did not. hATOH1 but not hTCF3 induced conversion of greater epithelial ridge cells into Pou4f3/GFP and myosin VIIa double-positive cells. Transfection of hATOH1 in combination with hTCF3 or hGATA3 induced 2-3X more Pou4f3/GFP cells, and similarly enhanced Pou4f3/GFP and myosin VIIa double-positive cells, when compared to hATOH1 alone. Triple or quadruple TF combinations were generally not more effective than double TF combinations except in the middle turn, where co-transfection of hATOH1, hE2A, and hGATA3 was more effective than hATOH1 plus either hTCF3 or hGATA3. The results demonstrate that TFs can cooperate in regulation of the Pou4f3 gene and in the induction of at least one other element of a HC phenotype. Our data further indicate that combinations of TFs can be more effective than individual TFs in the inner ear.
journal_name
Dev Bioljournal_title
Developmental biologyauthors
Masuda M,Pak K,Chavez E,Ryan AFdoi
10.1016/j.ydbio.2012.09.002subject
Has Abstractpub_date
2012-12-01 00:00:00pages
68-80issue
1eissn
0012-1606issn
1095-564Xpii
S0012-1606(12)00506-4journal_volume
372pub_type
杂志文章abstract::It has been posited that animal development evolved from pre-existing mechanisms for regulating cell differentiation in the single celled and colonial ancestors of animals. Although the progenitors of animals cannot be studied directly, insights into their cell biology may be gleaned from comparisons between animals a...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/j.ydbio.2011.06.003
更新日期:2011-09-01 00:00:00
abstract::Morphogenesis of the Drosophila tracheal system relies on different signalling pathways that have distinct roles in specifying both the migration of the tracheal cells and the particular morphological features of the primary branches. The current view is that the tracheal cells are initially specified as an equivalent...
journal_title:Developmental biology
pub_type: 杂志文章
doi:
更新日期:2002-10-15 00:00:00
abstract::The MEI-1/MEI-2 microtubule-severing complex, katanin, is required for oocyte meiotic spindle formation and function in C. elegans, but the microtubule-severing activity must be quickly downregulated so that it does not interfere with formation of the first mitotic spindle. Post-meiotic MEI-1 inactivation is accomplis...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/j.ydbio.2009.04.004
更新日期:2009-06-15 00:00:00
abstract::Proper spatial expression of the wingless (wg) gene in the Drosophila embryonic epidermis is crucial to intrasegmental patterning. Single cell wide wg expression is initiated at the blastoderm stage in response to combinatorial regulation by the pair rule genes. Later, during gastrulation, when the epidermal expressio...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1006/dbio.1995.1243
更新日期:1995-08-01 00:00:00
abstract::Cell proliferation, growth and survival are three different basic processes which converge at determining a fundamental property -the size of an organism. Scalloped (Sd) is the first characterised transcriptional partner to Yorkie (Yki), the downstream effector of the Hippo pathway which is a highly potential and evol...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/j.ydbio.2017.10.016
更新日期:2017-12-15 00:00:00
abstract::A cDNA of the sea urchin Strongylocentrotus purpuratus was identified as encoding polyubiquitin and used to detect a single gene with transcripts containing multiple ubiquitin coding units. Polyubiquitin transcripts exist as a 3.2-kb RNA in polyribosomes and as three higher molecular weight RNAs in purified nuclei. Th...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/0012-1606(91)90124-l
更新日期:1991-06-01 00:00:00
abstract::Neuropilin (previously known as the A5 protein) is a membrane protein identified in Xenopus and is presumed to be involved in the target recognition of the optic nerve fibers. We have isolated cDNAs encoding the chick homologue of neuropilin, using the Xenopus neuropilin cDNA as a hybridization probe. The predicted am...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1006/dbio.1995.1208
更新日期:1995-07-01 00:00:00
abstract::Pancreatic development depends on the transcription factor Pax6, which controls islet cell differentiation and hormone production. To understand the regulation of Pax6 pancreatic expression, we have identified a minimal Pax6 pancreatic enhancer and show that it contains a composite binding site for Meis and Pbx homeop...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/j.ydbio.2006.06.030
更新日期:2006-12-15 00:00:00
abstract::Trypsin-like activity is secreted from eggs of many species at fertilization, and this activity is believed to be critical for the block to polyspermy. Here we show that a cortical granule serine protease of sea urchins is the major and perhaps only protease family member important for fertilization. Zymography assays...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1006/dbio.1999.9299
更新日期:1999-07-01 00:00:00
abstract::During Drosophila oogenesis, activation of Notch signaling in the follicular epithelium (FE) around stage 6 of oogenesis is essential for entry into the endocycle and a series of other changes such as cell differentiation and migration of subsets of the follicle cells. Notch induces the expression of zinc finger prote...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/j.ydbio.2014.04.024
更新日期:2014-08-01 00:00:00
abstract::Collapsin-1 is a secreted glycoprotein that inhibits the extension of specific growth cones in vitro. It has been hypothesized to serve as a repulsive guidance cue for extending growth cones in vivo. Here we report the distribution of collapsin-1 message as demonstrated by in situ hybridization using digoxigenin-label...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1006/dbio.1996.0016
更新日期:1996-01-10 00:00:00
abstract::Development of the Drosophila embryonic midgut is dependent on a number of genes, including tinman and bagpipe, which are required for formation of the visceral mesoderm, and the homeotic genes and their targets, which act locally in the visceral mesoderm to direct formation of specific midgut constrictions. Here we r...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1006/dbio.1995.1171
更新日期:1995-06-01 00:00:00
abstract::Spermatogenesis is a complex process that requires coordinated proliferation and differentiation of male germ cells. The molecular events that dictate this process are largely unknown, but are likely to involve highly regulated transcriptional control. In this study, we investigate the contribution of chromatin associ...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/j.ydbio.2012.07.006
更新日期:2012-09-15 00:00:00
abstract::External genital development begins with formation of paired genital swellings, which develop into the genital tubercle. Proximodistal outgrowth and axial patterning of the genital tubercle are coordinated to give rise to the penis or clitoris. The genital tubercle consists of lateral plate mesoderm, surface ectoderm,...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1006/dbio.2002.0668
更新日期:2002-07-01 00:00:00
abstract::A new method is presented for preparation of highly purified plasma membranes from fertilized sea urchin eggs. The purified plasma membranes are in vesicle form and are highly enriched in ouabain inhibitable, Na+/K+ ATPase activity. Analysis of membrane proteins by sodium dodecyl sulfate-gel electrophoresis indicates ...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/0012-1606(83)90106-9
更新日期:1983-06-01 00:00:00
abstract::The Foxl1 gene, which encodes a winged helix transcriptional regulator, is expressed in the mesenchymal layer of developing and mature gastrointestinal tract. Foxl1-deficient mice exhibit various defects not only in the epithelial layer of the gastrointestinal tract but also in gut-associated lymphoid tissues. In the ...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/s0012-1606(02)00088-x
更新日期:2003-03-15 00:00:00
abstract::The survival effects of brain-derived neurotrophic factor (BDNF) on the ganglion cells of the chick retina were studied in vitro at different embryonic ages. We found these effects to be strongly age-dependent: at E5, when the first ganglion cell axons have crossed the optic chiasm, but not yet reached the tectum, gan...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/0012-1606(89)90256-x
更新日期:1989-12-01 00:00:00
abstract::Hedgehog (Hh) proteins and cAMP-dependent protein kinase A (PKA) generally play opposing roles in developmental patterning events. Humans and mice heterozygous for mutations in the sonic hedgehog (Shh) receptor gene patched-1 (ptc1) have an increased incidence of certain types of cancer, including medulloblastoma (MB)...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/j.ydbio.2007.10.031
更新日期:2008-01-01 00:00:00
abstract::Analysis of 262 transgenic mouse pedigrees suggests that about 30% of the mice produced by microinjection of plasmids into pronuclei are mosaic in the germline. This implies that in these lines integration of the foreign DNA occurred after the first round of chromosomal DNA replication. In mosaics resulting from delay...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/0012-1606(86)90068-0
更新日期:1986-11-01 00:00:00
abstract::Enhancers are flexible in terms of their location and orientation relative to the genes they regulate. However, little is known about whether the flexibility can be applied in every combination of enhancers and genes. Enhancer detection with transposable elements is a powerful method to identify enhancers in the genom...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/j.ydbio.2012.12.012
更新日期:2013-03-01 00:00:00
abstract::Retinoic acid (RA) plays a critical role in neural patterning and organogenesis in the vertebrate embryo. Here we characterize a mutant of the zebrafish named giraffe (gir) in which the gene for the RA-degrading enzyme Cyp26a1 is mutated. The gir mutant displayed patterning defects in multiple organs including the com...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/j.ydbio.2004.11.023
更新日期:2005-02-15 00:00:00
abstract::Primary cultures of cardiac myocytes from newborn normal and genetically cardiomyopathic (strain UM-X7.1) hamsters were analyzed by electron microscopy and immunofluorescent staining for myosin, actin, tropomyosin, and alpha-actinin. Antibody staining of these contractile proteins demonstrates that both normal and car...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/0012-1606(83)90091-x
更新日期:1983-06-01 00:00:00
abstract::Fetomodulin (FM) was previously shown to be a surface marker protein of parietal endoderm by in vitro differentiation of F9 embryonal carcinoma cells and by immunohistochemistry of in vivo embryos. BALB/3T3 and sarcoma S180 cells of the mouse were also shown to possess a protein which was indistinguishable from FM by ...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/0012-1606(90)90058-q
更新日期:1990-07-01 00:00:00
abstract::Connexin 43 (Cx43) knockout mice and transgenic mice (CMV43) overexpressing the Cx43 gap junction gene exhibit heart defects involving the conotruncus and right ventricle. Based on the heart phenotype and Cx43 gene and transgene expression pattern, we previously proposed that the heart defects may reflect a role for g...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1006/dbio.1998.8891
更新日期:1998-06-01 00:00:00
abstract::Dictyostelium discoideum amoebas display colonial multicellularity where starving amoebas aggregate to form migrating slugs and fruiting bodies consisting of spores and three supporting cell types. To resolve the cell signalling mechanism that control sporulation, we use insertional mutagenesis of amoebas transformed ...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/j.ydbio.2019.04.017
更新日期:2019-08-15 00:00:00
abstract::The mechanisms involved in the formation and the differentiation of the liver remain unclear despite extensive studies. To investigate these events in mouse hepatic development, we have taken advantage of the N-myc mutant mouse line which exhibits abnormal liver development. N-myc mutant embryos die between 11.5 and 1...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1006/dbio.1997.8823
更新日期:1998-03-01 00:00:00
abstract::Integrin α5-null embryos die in mid-gestation from severe defects in cardiovascular morphogenesis, which stem from defective development of the neural crest, heart and vasculature. To investigate the role of integrin α5β1 in cardiovascular development, we used the Mesp1(Cre) knock-in strain of mice to ablate integrin ...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/j.ydbio.2014.09.014
更新日期:2014-11-15 00:00:00
abstract::We demonstrate that interspecific sequence conservation can provide a systematic guide to the identification of functional cis-regulatory elements within a large expanse of genomic DNA. The test was carried out on the otx gene of Strongylocentrotus purpuratus. This gene plays a major role in the gene regulatory networ...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1006/dbio.2002.0618
更新日期:2002-06-01 00:00:00
abstract::Monoclonal antibodies against the surface of embryonic osteogenic cells (SB-1, SB-2, SB-3, and SB-5) have been used to characterize the sequence of transitions involved in the osteogenic cell lineage. In the present study, immunohistochemical analyses of the expression of osteogenic cell surface antigens in organ cult...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/0012-1606(90)90388-y
更新日期:1990-10-01 00:00:00
abstract::In the vertebrate head, crucial parts of the sense organs and sensory ganglia develop from special regions, the cranial placodes. Despite their cellular and functional diversity, they arise from a common field of multipotent progenitors and acquire distinct identity later under the influence of local signalling. Here ...
journal_title:Developmental biology
pub_type: 杂志文章,评审
doi:10.1016/j.ydbio.2012.06.028
更新日期:2012-10-01 00:00:00