Abstract：
:Intercellular communication mediated by gap junctions is important for tissue homeostasis in the avascular lens, and extensive areas of gap junctions form between fiber cells during fiber cell differentiation and lens development. We examined the role of the calcium-dependent cell adhesion molecule, N-cadherin, in the process of gap junction formation between fiber cells. Lentoids, multicellular structures with characteristics of differentiated fiber cells, were isolated from embryonic chick lens cultures and subsequently paired to provide an in vitro model of fiber cell interactions. Gap junction formation between cells of paired lentoids was monitored by observing the lentoid-to-lentoid transfer of fluorescent dyes, either calcein or Lucifer yellow, over a time course of up to 48 hr. Dye transfer between lentoids was inhibited upon the addition to the medium of Fab fragments (100-622 microgram/ml) of a monoclonal antibody specific for N-cadherin, and also by the reduction of extracellular calcium in the incubation medium. However, the addition of Fab fragments (100-1500 microgram/ml) of an antibody to a fiber-cell-specific integral membrane protein, MIP, did not change the time course nor extent of dye transfer between lentoids. Our results, using cultured embryonic cells, extend those from previous studies with cell lines and transfected cells. We conclude that cadherin interactions facilitate the formation of gap junctions between embryonic lens fiber cells, by the stabilization of membrane appositions and/or by the generation of an intracellular signal(s).
journal_name
Dev Bioljournal_title
Developmental biologyauthors
Frenzel EM,Johnson RGdoi
10.1006/dbio.1996.0237subject
Has Abstractpub_date
1996-10-10 00:00:00pages
1-16issue
1eissn
0012-1606issn
1095-564Xpii
S0012-1606(96)90237-7journal_volume
179pub_type
杂志文章abstract：:Endogenous patterns of retinoic acid (RA) signaling in avian cardiac morphogenesis were characterized by localized expression of a key RA-synthetic enzyme, RALDH2, which displayed a biphasic pattern during heart development. RALDH2 immunoreactivity was initially apparent posterior to Hensen's node of stage 5-6 embryos...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1999.9588
更新日期：2000-03-01 00:00:00
abstract：:The endoderm of C. elegans arises entirely from a single progenitor cell, the E blastomere, whose identity is specified by GATA type transcription factors, including END-1. In response to an inductive interaction mediated through Wnt/MAP kinase signaling pathways, POP-1, a Lef/Tcf-type transcription factor, restricts ...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2008.11.015
更新日期：2009-03-01 00:00:00
abstract：:The Drosophila boule gene is expressed exclusively in the male germline and encodes an RNA binding protein closely related to the mammalian fertility factors encoded by the DAZ (Deleted in Azoospermia) and DAZL (DAZ-like) genes. Mutation of boule blocks both meiotic divisions. Differentiation nonetheless continues, re...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1998.9098
更新日期：1998-12-15 00:00:00
abstract：:We have studied the differentiation of the oocyte vitelline coat (VC) and jelly coat (JC) of the starfish, Astropecten aurantiacus. The precursor material of both envelopes is secreted by the oocyte while the follicle cells do not appear to participate in the secretory process. The first indication of differentiation ...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(83)90296-8
更新日期：1983-10-01 00:00:00
abstract：:The segregation of founder cells from the somatic mesoderm is a prerequisite for the formation of body wall muscles in the Drosophila embryo. The myogenic basic helix-loop-helix protein, Nautilus (Nau), is expressed in a subset of these founder cells in medial and lateral positions in the somatic mesoderm. Mutations i...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1996.9987
更新日期：1996-05-25 00:00:00
abstract：:The trkA gene encodes the tyrosine kinase receptor that transduces the NGF signal. We have used a defective herpes simplex virus-1 (HSV-1) vector containing a full-length rat trkA sequence (pHSVtrkA) to express NGF receptors in primary cultures of neonatal nodose neurons and embryonic spinal motor neurons which are no...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1994.1131
更新日期：1994-05-01 00:00:00
abstract：:Alkaline phosphatase (AP) activity is expressed by endodermal cells of ascidian larvae. It was reported previously that the expression of AP activity is resistant to treatment with actinomycin D, a transcription inhibitor that inhibits the appearance of several other tissue-specific molecules and morphological markers...
journal_title：Developmental biology
pub_type： 杂志文章
doi：
更新日期：1998-06-15 00:00:00
abstract：:Leaf primordia, first visible as small bumps, are produced in a cyclical pattern at the edges of the shoot apex, a smooth region at the top of the stem. Their formation is a biomechanical process. This review first considers hypothetical construction mechanisms and then summarizes research that provides information ab...
journal_title：Developmental biology
pub_type： 杂志文章,评审
doi：10.1016/0012-1606(92)90089-y
更新日期：1992-09-01 00:00:00
abstract：:Myogenesis in the embryo and the adult mammal consists of a highly organized and regulated sequence of cellular processes to form or repair muscle tissue that include cell proliferation, migration, and differentiation. Data from cell culture and in vivo experiments implicate both FGFs and HGF as critical regulators of...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.2001.0416
更新日期：2001-11-01 00:00:00
abstract：:The 3' penultimate exon (exon 18) of transcripts from the muscle myosin heavy chain (MHC) gene of Drosophila melanogaster is excluded from mRNAs of embryonic and larval muscle, while it is included in mRNAs of adult thoracic muscles. By transforming organisms with the MHC gene 5' end, linked in-frame to the MHC gene 3...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(91)90235-u
更新日期：1991-08-01 00:00:00
abstract：:Mammalian sperm-egg adhesion occurs when sperm bind to the zona pellucida of the egg. In this study with guinea pig gametes, we have asked if sperm can initiate binding to the zona before and after the acrosome reaction and if the sperm surface protein PH-20 is involved in the binding at these two stages. Sperm bindin...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(87)90191-6
更新日期：1987-06-01 00:00:00
abstract：:We investigated the influence of the growth surface on the direction of Xenopus spinal neurite growth in the presence of a dc electric field of physiological magnitude. The direction of galvanotropism was determined by the substratum; neurites grew toward the negative electrode (cathode) on untreated Falcon tissue cul...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1998.9039
更新日期：1998-11-15 00:00:00
abstract：:These studies were designed to test the hypothesis that sperm nuclear decondensation and male pronuclear formation during hamster fertilization depend upon the ability of the fertilized oocyte to reduce sperm nuclear disulfide bonds. In a first series of experiments, treatment of mature oocytes with the sulfhydryl blo...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(84)90126-x
更新日期：1984-01-01 00:00:00
abstract：:Regulated changes in the cell cycle underlie many aspects of growth and differentiation. Prior to meiosis, germ cell cycles in many organisms become accelerated, synchronized, and modified to lack cytokinesis. These changes cause cysts of interconnected germ cells to form that typically contain 2(n) cells. In Drosophi...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1999.9570
更新日期：2000-02-01 00:00:00
abstract：:Antenna structure varies widely among insects, in contrast to the well-conserved structure of legs. The adult capitate antenna of the red flour beetle, Tribolium castaneum, is composed of eleven articles, organized into four distinct morphological regions (scape, pedicel, funicle and club). Here, we report the use of ...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2008.10.047
更新日期：2009-03-01 00:00:00
abstract：:A simple assay has been developed to measure cGMP-specific phosphodiesterase (cGPD) activity in crude soluble extracts of amoebae of Dictyostelium discoideum. When amoebae of different wild-type strains were starved on buffered agar, all strains exhibited an 8- to 12-fold increase in cGMP-specific hydrolyzing activity...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(84)90026-5
更新日期：1984-05-01 00:00:00
abstract：:All metazoan genomes encode multiple RAS GTPase activating proteins (RasGAPs) that negatively regulate the conserved RAS/MAPK signaling pathway. In mammals, several RasGAPs exhibit tumor suppressor activity by preventing excess RAS signal transduction. We have identified gap-3 as the to date missing Caenorhabditiseleg...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2008.08.026
更新日期：2008-11-15 00:00:00
abstract：:Fibronectin (Fn) plays an important part in the branching morphogenesis of salivary gland, lung, and kidney. Here, we examine the effect of the conditional knockout of Fn in the mammary epithelium [Fn(MEp-/-)] on postnatal mammary gland development, using Cre-loxP-mediated gene knockout technology. Our data show that ...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2010.07.001
更新日期：2010-10-01 00:00:00
abstract：:A population of hematopoietic progenitors becomes committed within the embryo proper in the floor of the aorta (P-Sp/AGM in the mouse). In birds, this first aspect of intraembryonic hematopoiesis is prominent during embryonic day 3 (E3) as endothelium-associated "intra-aortic clusters." Between E6 and E8, diffuse hema...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.2000.9799
更新日期：2000-08-15 00:00:00
abstract：:The thyroid gland synthesizes thyroxine (T4), which passes through the larval tadpole's circulatory system. The enzyme type II iodothyronine deiodinase (D2) converts thyroxine (T4) to the active hormone 3,5,3'-triiodothyronine (T3) in peripheral tissues. An early response to thyroid hormone (TH) in the Xenopus laevis ...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2003.10.005
更新日期：2004-02-01 00:00:00
abstract：:COUP-TFII (also known as Nr2f2), a member of the nuclear orphan receptor superfamily, is expressed in several regions of the central nervous system (CNS), including the ventral thalamus, hypothalamus, midbrain, pons, and spinal cord. To address the function of COUP-TFII in the CNS, we generated conditional COUP-TFII k...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2008.11.001
更新日期：2009-02-15 00:00:00
abstract：:Mouse embryo limb cells carrying either the brachypodism (bpH/bpH) mutation or its wild-type (+/+) allele were tested for their ability to accumulate cyclic AMP in response to prostaglandin E2 (PGE2) between Embryonic Days E12 and E14. Mutant cells exhibited a precocious increase in cyclic AMP. In the absence of PGE2 ...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(90)90372-p
更新日期：1990-12-01 00:00:00
abstract：:The GATA family of transcription factors are known to play multiple critical roles in vertebrate developmental processes, including erythropoiesis, endoderm formation and cardiogenesis. There have been no previous demonstrations of a functional role for any GATA family member being associated with musculoskeletal deve...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2007.12.001
更新日期：2008-02-15 00:00:00
abstract：:A monoclonal antibody, Mab 8A2, that recognizes a novel set of gangliosides was produced by immunizing a mouse with Embryonic Day 14 chick optic nerve. Immunohistochemical studies of the developing chick retina revealed a complex pattern of Mab 8A2 immunoreactivity. Initially, staining is concentrated in the optic fib...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(91)90221-n
更新日期：1991-05-01 00:00:00
abstract：:CHARGE syndrome is caused by spontaneous loss-of-function mutations to the ATP-dependant chromatin remodeller chromodomain-helicase-DNA-binding protein 7 (CHD7). It is characterised by a distinct pattern of congenital anomalies, including cardiovascular malformations. Disruption to the neural crest lineage has previou...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2015.06.017
更新日期：2015-09-01 00:00:00
abstract：:We have analyzed several aspects of the development of flies carrying mutations at the Glued locus. Optic lobe abnormalities in individuals heterozygous for the original Glued allele were previously shown to result from an action of this mutation in the retinula cells. We have estimated when the functioning of this ge...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(83)90256-7
更新日期：1983-09-01 00:00:00
abstract：:Full-grown Xenopus oocytes, Stage VI (1200-1300 microns), undergo meiotic maturation when exposed to progesterone. Smaller stage IV (800 microns) and stage V (1000 microns) oocytes remain in prophase arrest when exposed to this steroid. The larger stage VI oocytes undergo an intracellular alkalization from 7.2 to 7.6,...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(84)90288-4
更新日期：1984-10-01 00:00:00
abstract：:Nociceptive neurons innervate the skin with complex dendritic arbors that respond to pain-evoking stimuli such as harsh mechanical force or extreme temperatures. Here we describe the structure and development of a model nociceptor, the PVD neuron of C. elegans, and identify transcription factors that control morphogen...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2010.05.502
更新日期：2010-09-01 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 molting cycle in insects is regulated by the fluctuating levels of ecdysteroids. Twenty-four hours prior to the pupal molt in Manduca sexta steroid titers are relatively high and they fall to very low levels at 4 hr before the molt. Several physiological events accompanying molts have been shown to require the ris...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1994.1115
更新日期：1994-04-01 00:00:00
