Abstract:
:Cell polarity is thought to be required for the efficient production of nascent blastocoele fluid, which begins at the 16-cell stage of mouse preimplantation development. In this study the 4-cell/16-cell blastomere heterokaryon was used to test the hypothesis that solute transport across the apical membrane domain induces the apical-basal axis of organelle distribution across polar 16-cell-stage blastomeres. Fusion of 4-cell/16-cell blastomere pairs resulted in a population of heterokaryons of which 65% were polar (contain an apical plasma membrane domain from a polar 16-cell-stage plasma membrane insert) and 30% were apolar (contain an apolar 16-cell-stage plasma membrane insert). Polar heterokaryons were distinguished from apolar ones by labeling their apical domains with fluorescent succinylated concanavalin A. In polar heterokaryons, both nuclei (labeled with Hoeschst 33242) were immediately subjacent to the apical plasma membrane domain, while in apolar heterokaryons both nuclei were located centrally. Two inhibitors of apical transmembrane solute transport--phlorizin, which inhibits brush border (apical) Na+/glucose symporters, and ouabain, which inhibits Na+/K+-ATPase, thereby modifying the transmembrane Na+ gradient--were examined for their effect on nuclear position in polar and apolar heterokaryons after a 4-hr incubation in either inhibitor. Both ouabain (L.M. Wiley, 1984, Dev. Biol. 105, 330-342) and phlorizin (this study) had a biphasic effect on the rate of nascent blastocoele fluid accumulation such that at lower concentrations (ouabain, 10(-5) M; phlorizin, 10(-6) M) fluid accumulation was accelerated and at higher concentrations (both inhibitors, 10(-4) M) fluid accumulation was delayed. In polar heterokaryons, both concentrations of each inhibitor caused the nuclei to become displaced basally from their normal location against the apical plasma membrane domain. Both nuclei, however, remained on the axis of polarity passing through the apical domain. The magnitude of displacement was greater at higher concentrations of either inhibitor. Neither inhibitor affected nuclear position in apolar heterokaryons. These observations agree with the hypothesis that apical plasma membrane solute transport maintains the asymmetric organelle distribution across the apical-basal axis of polar 16-cell-stage blastomeres.
journal_name
Dev Bioljournal_title
Developmental biologyauthors
Wiley LM,Obasaju MFdoi
10.1016/0012-1606(89)90041-9subject
Has Abstractpub_date
1989-06-01 00:00:00pages
375-84issue
2eissn
0012-1606issn
1095-564Xpii
0012-1606(89)90041-9journal_volume
133pub_type
杂志文章abstract::This study evaluated Na/K-ATPase alpha 1- and alpha 3-subunit isoform polypeptide expression and localization during bovine preattachment development. Na/K-ATPase cation transport activity from the one-cell to blastocyst stage was also determined by measuring ouabain-sensitive 86Rb+ uptake. Both alpha1- and alpha 3-su...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1006/dbio.1998.8874
更新日期:1998-05-01 00:00:00
abstract::Trichosia pubescens larvae were ligated at different prepupal developmental stages in order to investigate whether ecdysterone acts just as a trigger or whether its presence in the hemolymph is constantly necessary for the induction of the late puffs, in particular the DNA puffs. The larvae were ligated in the middle ...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/0012-1606(84)90170-2
更新日期:1984-03-01 00:00:00
abstract::This study describes the temporal pattern of posterior positional identity in mouse limb bud cells. To do this wedges of tissue from the posterior edge of mouse limb buds at various stages (limb stages: Wanek et al., 1989b. J. Exp. Zool. 249, 41-49) were grafted to the anterior edge of a host chick embryo wing bud. Gr...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/0012-1606(91)90306-n
更新日期:1991-10-01 00:00:00
abstract::Regulation of gene expression during early embryonic development in the rabbit was investigated by quantitative assay of firefly luciferase activity obtained by microinjection of three plasmid constructs using the regulatory region of polyomavirus promoter (PrPyV) with two different enhancer sequences (wild type or mu...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1006/dbio.1994.1188
更新日期:1994-07-01 00:00:00
abstract::The expression of heat shock genes is induced in all living cells by a series of proteotoxic treatments. Heat shock genes are also activated spontaneously during different phases of embryonic development. HSP89 alpha and HSC70 are expressed at a high level in the mouse blastocyst. A family of factors, called HSFs, are...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1006/dbio.1994.1361
更新日期:1994-12-01 00:00:00
abstract::A fundamental issue during nervous system development is how individual cells are formed from the undefined precursors. Differentiated neurons and glia, two major cell types mediating neuronal function, are acquired from immature precursors via a series of explicit controls exerted by transcription factors such as pro...
journal_title:Developmental biology
pub_type: 杂志文章,评审
doi:10.1016/j.ydbio.2012.07.018
更新日期:2012-10-01 00:00:00
abstract::The nuclear lamina is an extensive protein network that underlies the inner nuclear envelope. This network includes the LAP2-emerin-MAN1-domain (LEM-D) protein family, proteins that share an association with the chromatin binding protein Barrier-to-autointegration factor (BAF). Loss of individual LEM-D proteins causes...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/j.ydbio.2016.05.001
更新日期:2016-07-01 00:00:00
abstract::Cardiac troponin T (cTnT) is a component of the troponin (Tn) complex in cardiac myocytes, and plays a regulatory role in cardiac muscle contraction by anchoring two other Tn components, troponin I (TnI) and troponin C, to tropomyosin (Tm) on the thin filaments. In order to determine the in vivo function of cTnT, we c...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/j.ydbio.2008.07.007
更新日期:2008-10-01 00:00:00
abstract::Skeletal muscles of the avian limb are derived from mononucleated myogenic precursor cells (myoblasts) that migrate into the somatopleural mesoderm of the developing limb bud from the ventrolateral dermomyotome of limb adjacent somites. In the present study, we utilized replication-deficient lacZ-encoding retroviruses...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/s0012-1606(02)00028-3
更新日期:2003-01-15 00:00:00
abstract::Peptide growth factors can initiate changes in cell fate in Xenopus ectodermal explants and induce the formation of mesoderm. Marker genes expressed in mesoderm allow the analysis of whether, or how much, induction has occurred, but do not tell us what molecules are involved in carrying out the response. In this repor...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1006/dbio.1996.0158
更新日期:1996-07-10 00:00:00
abstract::We have examined the roles of cell lineage and interactions in the determination of individual identified neurons in the grasshopper embryo by selective ablations of individual cells and/or their neighbors at successive stages following their birth. The neurons in the grasshopper central nervous system (CNS) are produ...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/0012-1606(85)90069-7
更新日期:1985-07-01 00:00:00
abstract::MicroRNAs (miRNAs) are post-transcriptional regulators of growth and development in both plants and animals. Flowering is critical for the reproduction of angiosperms. Flower development entails the transition from vegetative growth to reproductive growth, floral organ initiation, and the development of floral organs....
journal_title:Developmental biology
pub_type: 杂志文章,评审
doi:10.1016/j.ydbio.2013.05.009
更新日期:2013-08-15 00:00:00
abstract::The direct flight muscles (DFMs) of Drosophila allow for the fine control of wing position necessary for flight. In DWnt-2 mutant flies, certain DFMs are either missing or fail to attach to the correct epithelial sites. Using a temperature-sensitive allele, we show that DWnt-2 activity is required only during pupation...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1006/dbio.2002.0572
更新日期:2002-03-15 00:00:00
abstract::We examined the development of epithelial Na+ conductance in 6- and 7-day post coitus (p.c.) preimplantation rabbit embryos using the whole-cell patch-clamp technique on dissociated rabbit trophectodermal cells and by immunocytochemical localization using a polyclonal antibody directed against subunits of an apical ep...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/0012-1606(91)90289-f
更新日期:1991-10-01 00:00:00
abstract::The nervous system development of the sea cucumber Stichopus japonicus was investigated to explore the development of the bilateral larval nervous system into the pentaradial adult form typical of echinoderms. The first nerve cells were detected in the apical region of epidermis in the late gastrula. In the auriculari...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/j.ydbio.2005.12.038
更新日期:2006-04-01 00:00:00
abstract::The enteric nervous system (ENS) forms from the neural crest-derived precursors that colonize the bowel before differentiating into a network of neurons and glia that control intestinal function. Retinoids are essential for normal ENS development, but the role of retinoic acid (RA) metabolism in development remains in...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/j.ydbio.2013.06.021
更新日期:2013-09-01 00:00:00
abstract::Previous studies from this laboratory have identified a novel alpha-D-mannosidase on the sperm plasma membranes of several species, including man, which may have a role in fertilization. The polyclonal antibody raised against an isoform of the enzyme purified from rat epididymal fluid was found to cross-react with the...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1006/dbio.1995.1050
更新日期:1995-02-01 00:00:00
abstract::Nematodes provide a useful experimental system with which to investigate the evolution of development at the cellular, genetic, and molecular levels. Building on an understanding of vulval development in Caenorhabditis elegans, analysis of vulval development has been extended to a number of other species in three fami...
journal_title:Developmental biology
pub_type: 杂志文章,评审
doi:10.1006/dbio.1996.0035
更新日期:1996-02-01 00:00:00
abstract::The term "transdifferentiation" has been used to describe the apparent phenotypic conversion of chick embryo neural retina Müller glial cells into lens-like cells in vitro. This phenotypic conversion is characterized by expression of such lens-specific proteins as delta crystallin and has been viewed as an example of ...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/0012-1606(87)90186-2
更新日期:1987-06-01 00:00:00
abstract::Expression of constitutively active Src protein tyrosine kinase in Xenopus oocytes has been shown to accelerate oocyte maturation suggesting that Src may be involved in meiotic progression. However, meiotic regulation of endogenous Src kinase in oocytes has not been investigated in detail. To address this problem, we ...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/j.ydbio.2004.10.018
更新日期:2005-02-15 00:00:00
abstract::Neuronal circuit development and function require proper synapse formation and maintenance. Genetic screens are one powerful method to identify the mechanisms shaping synaptic development and stability. However, genes with essential roles in non-neural tissues may be missed in traditional loss-of-function screens. In ...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/j.ydbio.2012.04.008
更新日期:2012-06-15 00:00:00
abstract::The HCO3(-) anion activates sperm motility, an important early step in capacitation, by increasing flagellar beat frequency through a pathway that requires the atypical adenylyl cyclase SACY and the sperm-specific C alpha2 catalytic subunit of PKA. Here we show that the accelerating action of HCO3(-) also requires the...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/j.ydbio.2007.09.017
更新日期:2007-12-01 00:00:00
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::Plakoglobin and beta-catenin are cytoplasmic proteins associated with the intracellular plaques of cell adhesive junctions. While plakoglobin is present in both adherens junctions and desmosomes, beta-catenin is associated with the cadherins that accumulate only in adherens junctions. Both beta-catenin and plakoglobin...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/0012-1606(92)90118-z
更新日期:1992-10-01 00:00:00
abstract::An anterior-posterior concentration difference of fibronectin associated with the endoderm in early chick embryos has been implicated in the directional migration of precardiac mesoderm cells. We have examined the effect of increasing concentrations of an antibody to fibronectin (FN) to test the essentiality of FN to ...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/0012-1606(88)90378-8
更新日期:1988-10-01 00:00:00
abstract::Oocyte maturation in mouse is associated with a dramatic reorganisation of the endoplasmic reticulum (ER) from a network of cytoplasmic accumulations in the germinal vesicle-stage oocyte (GV) to a network of distinctive cortical clusters in the metaphase II egg (MII). Multiple lines of evidence suggest that this redis...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/j.ydbio.2007.02.006
更新日期:2007-05-01 00:00:00
abstract::The propagation of pluripotential mouse embryonic stem (ES) cells is sustained by leukemia inhibitory factor (LIF) or related cytokines that act through a common receptor complex comprising the LIF receptor subunit (LIF-R) and the signal transducer gp130. However, the findings that embryos lacking LIF-R or gp130 can d...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1006/dbio.1998.9026
更新日期:1998-11-01 00:00:00
abstract::Previous studies have established that embryonal carcinoma (EC) cells produce several different growth factors, but express few, if any, receptors for epidermal growth factor, platelet-derived growth factor, or transforming growth factor type-beta. In this study, the production and utilization of fibroblast growth fac...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/0012-1606(88)90161-3
更新日期:1988-09-01 00:00:00
abstract::Artificial extracellular matrices composed of collagen, glycosaminoglycans (GAG), proteoglycans (PG), plasma fibronectin (FN), and a hyaluronate-binding protein (HABP) have been prepared that morphologically resemble embryonic extracellular matrices in vivo at the light and electron microscope level. The effect of eac...
journal_title:Developmental biology
pub_type: 杂志文章,评审
doi:10.1016/0012-1606(85)90461-0
更新日期:1985-06-01 00:00:00
abstract::The hox genes play a central role in organogenesis and are implicated in the formation of hematopoietic stem cells (HSCs). The cdx genes encode homeodomain transcription factors that act as master regulators of the hox genes. In zebrafish, mutations in cdx4 cause a severe, but not complete, deficit in embryonic blood ...
journal_title:Developmental biology
pub_type: 杂志文章
doi:10.1016/j.ydbio.2006.01.003
更新日期:2006-04-15 00:00:00