abstract：:A cell surface protein (3B11) is differentially expressed in the embryonic labial segment of Manduca as two circular monolayers of epithelial cells invaginate and segregate from surrounding epithelial cells. The cells that invaginate and preferentially express 3B11 represent the presumptive prothoracic glands. These c...

journal_title：Developmental biology

authors： Chen CL,Lampe DJ,Robertson HM,Nardi JB

更新日期：1997-01-01 00:00:00

abstract：:NK-2-class homeobox genes have been identified in a variety of metazoans, from sponges to arthropods and vertebrates, and have been shown to play roles in a variety of cell and tissue specifications. Here we describe the characterization of the NK-2 homolog CnNK-2 from Hydra vulgaris, a freshwater cnidarian. CnNK-2 ex...

journal_title：Developmental biology

authors： Grens A,Gee L,Fisher DA,Bode HR

更新日期：1996-12-15 00:00:00

abstract：:Results of numerous experiments indicate that the transient rise in intracellular Ca2+ following sperm-egg fusion is essential for the subsequent events that constitute egg activation. Some events of egg activation, e.g., cortical granule exocytosis, however, appear more sensitive to intracellular Ca2+ than other even...

journal_title：Developmental biology

authors： Xu Z,Lefevre L,Ducibella T,Schultz RM,Kopf GS

更新日期：1996-12-15 00:00:00

abstract：:The Drosophila homeobox gene tinman and its vertebrate homologs Nkx-2.5 and Nkx-2.3 are critical determinants of cardiac development. We report here the identification of a new tinman-related gene, nkx2.7, as well as orthologs of Nkx-2.5 and Nkx-2.3 in the zebrafish. Analysis of their expression in the developing zebr...

journal_title：Developmental biology

authors： Lee KH,Xu Q,Breitbart RE

更新日期：1996-12-15 00:00:00

abstract：:Sonic hedgehog is a secreted factor regulating patterning of the anterior-posterior axis in the developing limb. The signaling pathway mediating the transduction of the signal is still poorly understood. In Drosophila several genes are known to act downstream of hedgehog, the fly homolog of Sonic hedgehog. An importan...

journal_title：Developmental biology

authors： Marigo V,Johnson RL,Vortkamp A,Tabin CJ

更新日期：1996-11-25 00:00:00

abstract：:DSL (Delta, Serrate, Lag-2) ligands activate Notch signaling and thereby regulate the differentiation of many different cell types during development. We have isolated a novel Serrate-like gene, Jagged2, whose amino acid sequence and expression pattern during rat embryogenesis suggest that it functions as a ligand for...

journal_title：Developmental biology

authors： Shawber C,Boulter J,Lindsell CE,Weinmaster G

更新日期：1996-11-25 00:00:00

abstract：:We have been studying oligodendrocyte generation in vitro to obtain insights into how the timely generation of these cells might be regulated. Our studies suggest the existence of timing mechanisms quite different from those of existing models, wherein it is proposed that timely oligodendrocyte generation is associate...

journal_title：Developmental biology

authors： Ibarrola N,Mayer-Pröschel M,Rodriguez-Peña A,Noble M

更新日期：1996-11-25 00:00:00

abstract：:Homeotic genes in the Antennapedia Complex of Drosophila specify identity of the posterior head segments; the labial segment requires Sex combs reduced (Scr) for proper development, Deformed (Dfd) specifies maxillary and mandibular identity, and labial is necessary for intercalary segment identity. Although mutations ...

journal_title：Developmental biology

authors： Pederson JD,Kiehart DP,Mahaffey JW

更新日期：1996-11-25 00:00:00

abstract：:Limb buds in the limbless chick begin to form normally but fail to form an AER and ultimately degenerate. Wnt7a and LMX-1, which are restricted to the dorsal half of a normal limb bud, are expressed throughout the ectoderm and mesenchyme of the mutant buds, respectively. Engrailed-1, normally expressed in ventral limb...

journal_title：Developmental biology

authors： Noramly S,Pisenti J,Abbott U,Morgan B

更新日期：1996-11-01 00:00:00

abstract：:Retinoic acid (RA) affects the response of many cells to growth factors, including the bone morphogenetic proteins (BMPs). The BMPs are members of the TGF-beta, family of growth factors, originally identified by their bone-inducing activities. Their widespread expression suggests many roles other than that in osteogen...

journal_title：Developmental biology

authors： Glozak MA,Rogers MB

更新日期：1996-11-01 00:00:00

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...

journal_title：Developmental biology

authors： Frenzel EM,Johnson RG

更新日期：1996-10-10 00:00:00

abstract：:The Endo16 gene codes for an RGD-containing calcium-binding protein that is found on the basal surfaces and in the extracellular matrix of cells of the invaginating archenteron during sea urchin gastrulation. Previously, we have shown that Endo16 is a single copy gene and we have determined the coding sequence and ana...

journal_title：Developmental biology

authors： Godin RE,Urry LA,Ernst SG

更新日期：1996-10-10 00:00:00

abstract：:Primary sensory olfactory neurons reside in a neuroepithelium lining the nasal cavity and project topographically onto the surface of the olfactory bulb, a rostral extension of the telencephalon. Galectin-1, a bivalent galactose-binding vertebrate lectin, is expressed in the developing rodent olfactory system. In the ...

journal_title：Developmental biology

authors： Puche AC,Poirier F,Hair M,Bartlett PF,Key B

更新日期：1996-10-10 00:00:00

abstract：:We have cloned a member of the fork head/HNF-3 family of transcription factors from the nematode Caenorhabditis elegans. Within the predicted DNA binding domain, this gene, called Ce-fkh-1, is 75-78% identical to the Drosophila fork head and rat liver HNF-3 alpha, beta, and gamma genes. Ce-fkh-1 mRNA is highly enriche...

journal_title：Developmental biology

authors： Azzaria M,Goszczynski B,Chung MA,Kalb JM,McGhee JD

更新日期：1996-09-15 00:00:00

abstract：:Lineage analysis studies in the avian embryo have identified two types of smooth muscle cells (SMCs) in the tunica media of large elastic arteries; one that originates within the cardiac neural crest and is ectoderm in origin (Ect) and another that arises from local mesenchyme of mesodermal origin (Mes). To determine ...

journal_title：Developmental biology

authors： Topouzis S,Majesky MW

更新日期：1996-09-15 00:00:00

abstract：:HB-GAM (heparin-binding growth-associated molecule) is a secretory, extracellular matrix-associated protein that was isolated by screening for proteins that enhance neurite outgrowth in perinatal rat brain neurons. In the present study we have investigated the possible role of HB-GAM in cell proliferation in the devel...

journal_title：Developmental biology

authors： Szabat E,Rauvala H

更新日期：1996-08-25 00:00:00

abstract：:The zebrafish hedgehog (hh) family members tiggy-winkle hedgehog (twhh) and sonic hedgehog (shh) are involved in patterning the ventral CNS and proximal eye. Using a dominant negative protein kinase A regulatory subunit mutant, we show that these hh activities are mediated by protein kinase A. The effects of dominant ...

journal_title：Developmental biology

authors： Ungar AR,Moon RT

更新日期：1996-08-25 00:00:00

abstract：:The role of fibronectin in mesoderm cell migration and and the importance of mesoderm migration for gastrulation in Xenopus are examined. To allow for migration, a stable interface must exist between migrating mesoderm cells and the cells of the substrate layer, the blastocoel roof. We show that maintenance of this in...

journal_title：Developmental biology

authors： Winklbauer R,Keller RE

更新日期：1996-08-01 00:00:00

abstract：:The Drosophila abnormal wing discs (awd) gene encodes the subunit of a protein that has nucleoside diphosphate kinase (NDP kinase) activity. Null mutations of the awd gene cause lethality after puparium formation. Larvae homozygous for such mutations have small imaginal discs, lymph glands, and brain lobes. Neither th...

journal_title：Developmental biology

authors： Xu J,Liu LZ,Deng XF,Timmons L,Hersperger E,Steeg PS,Veron M,Shearn A

更新日期：1996-08-01 00:00:00

abstract：:The left-right body axis is coordinately aligned with the orthogonal dorsoventral and anterioposterior body axes. The developmental mechanisms that regulate axis coordination are unknown. Here it is shown that the cardiac left-right orientation in zebrafish (Danio rerio) is randomized in notochord-defective no tail an...

journal_title：Developmental biology

authors： Danos MC,Yost HJ

更新日期：1996-07-10 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

authors： Vize PD

更新日期：1996-07-10 00:00:00

abstract：:The murine homeobox genes Msx-1 and Msx-2 are related to the Drosophila msh gene and are expressed in a variety of tissues during mouse embryogenesis. We now report the developmentally regulated expression of Msx-1 and Msx-2 in the mouse mammary gland and show that their expression patterns point toward significant fu...

journal_title：Developmental biology

authors： Friedmann Y,Daniel CW

更新日期：1996-07-10 00:00:00

abstract：:This study reports a morphological, skeletal, and molecular characterization of the supernumerary limbs induced by systemic administration of all-trans retinoic acid to egg-cylinder stage mouse embryos. As initially described by Rutledge et al. (Proc. Natl. Acad. Sci. USA 91, 5436, 1994), we have found that oral admin...

journal_title：Developmental biology

authors： Niederreither K,Ward SJ,Dollé P,Chambon P

更新日期：1996-06-15 00:00:00

abstract：:Hoxa-11 and Hoxd-11 are paralogous genes required for proper development of the vertebral column, the limbs, and the urogenital system. To further explore the functional relationship between these genes, as well as the potential rescue of one function by the other, we have introduced a Hoxd-11-expressing transgene int...

journal_title：Developmental biology

authors： Zákány J,Gérard M,Favier B,Potter SS,Duboule D

更新日期：1996-06-15 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

authors： Ranganayakulu G,Schulz RA,Olson EN

更新日期：1996-05-25 00:00:00

abstract：:The shoot meristem generates all of the aerial structures of an adult plant. It is organized in three layers which produce the epidermis (L1 layer) and the subepidermal layers (L2 and L3). The origin of adult structures has previously been fate mapped to the primary meristem for L2 and L3 tissues. In this work we cons...

journal_title：Developmental biology

authors： Schnittger A,Grini PE,Folkers U,Hülskamp M

更新日期：1996-05-01 00:00:00

abstract：:In order to further our understanding of the biological role of desmin, the muscle-specific intermediate filament protein, a null mutation in the desmin gene was introduced into the germ line of mice. Despite the complete lack of desmin, these mice developed and reproduced. Since we show that skeletal, cardiac, and sm...

journal_title：Developmental biology

authors： Li Z,Colucci-Guyon E,Pinçon-Raymond M,Mericskay M,Pournin S,Paulin D,Babinet C

更新日期：1996-05-01 00:00:00

abstract：:Calcium influx is known to be prerequisite for membrane fusion of myoblasts. However, little is known about the channels that are responsible for the entry of calcium into the cells. Here we show that K(Ca) channels and stretch-activated channels are involved in the calcium influx. Upon analysis of single-channel reco...

journal_title：Developmental biology

authors： Shin KS,Park JY,Ha DB,Chung CH,Kang MS

更新日期：1996-04-10 00:00:00

abstract：:The formation of endocardial endothelium in quail embryos was investigated using in vivo and in vitro systems. Based on the expression of an quail endothelial marker, QH-1, the initial emergence of endothelial precursor cells in the embryo occurs at stage 7+ (two somites) in the posterior parts of the bilateral heart ...

journal_title：Developmental biology

authors： Sugi Y,Markwald RR

更新日期：1996-04-10 00:00:00

abstract：:Fertilization results in the tyrosine phosphorylation of several egg proteins within minutes of sperm-egg binding and inhibitor studies have shown that tyrosine kinase activity is required for many aspects of egg activation. The present study demonstrates the presence of p59c-fyn kinase in the sea urchin egg and exami...

journal_title：Developmental biology

authors： Kinsey WH

更新日期：1996-03-15 00:00:00

abstract：:We utilized a strain of mice, derived from a radiation mutagenesis experiment and carrying an activity-attenuated allele of the X-linked enzyme glucose-6-phosphate dehydrogenase (G6PD), to analyze the development of the cell lineage leading to cerebellar Purkinje neurons. Due to random X inactivation during early embr...

journal_title：Developmental biology

authors： Baader SL,Schilling ML,Rosengarten B,Pretsch W,Teutsch HF,Oberdick J,Schilling K

更新日期：1996-03-15 00:00:00

abstract：:We have isolated Xbr-1, a novel Xenopus homeobox gene that defines a new class of homeobox genes, distantly related to the Drosophila BarH1 and BarH2 genes. Xbr-1 is predominantly expressed in the developing Xenopus eye, starting as early as the neural plate stage. At early stages of eye development XBR-1 is expressed...

journal_title：Developmental biology

authors： Papalopulu N,Kintner C

更新日期：1996-02-25 00:00:00

abstract：:In this paper we present a structural and functional characterization of a new sea urchin embryo transcription factor, SpRunt-1. This factor was isolated by means of its specific interaction with a cis-regulatory target site of the CyIIIa gene. Here we show that this target site, the P7I site, is required for normal e...

journal_title：Developmental biology

authors： Coffman JA,Kirchhamer CV,Harrington MG,Davidson EH

更新日期：1996-02-25 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

authors： Sommer RJ,Sternberg PW

更新日期：1996-02-01 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

authors： Shepherd I,Luo Y,Raper JA,Chang S

更新日期：1996-01-10 00:00:00

abstract：:During meiotic maturation or after fertilization of invertebrate and vertebrate oocytes, many of the quiescent stored mRNAs are recruited into polysomes. In the clam, Spisula solidissima, such masked messages include the abundant mRNAs encoding cyclin A and the small subunit of ribonucleotide reductase. We have previo...

journal_title：Developmental biology

authors： Walker J,Dale M,Standart N

更新日期：1996-01-10 00:00:00

abstract：:We investigated the potential role of rostral-caudal and dorsal-ventral subdivisions of the early rostral brain by relating these subdivisions to the early patterning of neuron cell bodies and their axon projections. The earliest neurons were mapped using the lipophilic axon tracers diI and diO on embryos fixed on emb...

journal_title：Developmental biology

authors： Mastick GS,Easter SS Jr

更新日期：1996-01-10 00:00:00

abstract：:There has been a resurgence of interest in comparative embryology. It is now important to be able to compare gene expression in different species at similar developmental stages. One phenomenon which may make it difficult to compare embryos in this way is heterochrony--a change in developmental timing during evolution...

journal_title：Developmental biology

authors： Richardson MK

更新日期：1995-12-01 00:00:00

abstract：:Growth factors and the extracellular matrix have been shown to fulfill vital developmental roles in many embryonic systems. Our hypothesis is that a developmental role played by the extracellular matrix in sea urchins may be the binding of a PDGF-like growth factor to promote signaling activity. We report here that an...

journal_title：Developmental biology

authors： Govindarajan V,Ramachandran RK,George JM,Shakes DC,Tomlinson CR

更新日期：1995-12-01 00:00:00

abstract：:Dictyostelium discoideum is a simple eukaryote that lives as an amoeba until starvation triggers aggregation. The aggregate forms a slug which then develops into a fruiting body with two main cell types, stalk and spore cells. Two mechanisms have been proposed to explain cell-type differentiation. Studies using expres...

journal_title：Developmental biology

authors： Clay JL,Ammann RR,Gomer RH

更新日期：1995-12-01 00:00:00