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 of the VC is the deposition of a fine fibrillar material between the microvilli which emerge from the oocyte surface. External to this, a more loosely organized material becomes the precursor of the JC. At this time both layers are periodic acid-Schiff (PAS)-positive. In a later stage, the material between the microvilli acquires a more compact organization, looses its PAS-positivity while acquiring fucose binding protein (FBP) affinity. On the contrary, the JC remains PAS-positive and FBP-negative. In the full grown oocytes the VC is made up of densely packed fibrils oriented tangentially to the oocyte surface and is tightly bound to the microvilli. The observations are discussed in connection with the problem of the role of the egg envelopes in sperm-egg recognition and in the induction of the acrosome reaction.
journal_name
Dev Bioljournal_title
Developmental biologyauthors
Santella L,Monroy A,Rosati Fdoi
10.1016/0012-1606(83)90296-8subject
Has Abstractpub_date
1983-10-01 00:00:00pages
473-81issue
2eissn
0012-1606issn
1095-564Xpii
0012-1606(83)90296-8journal_volume
99pub_type
杂志文章abstract：:Connective tissue outgrowths of neonatal muscle onto a substratum of bone matrix differentiate into cartilage in response to a bone morphogenetic protein (BMP). The BMP can be separated from bone matrix by extraction with 4 M guanidine hydrochloride (GuHCl) or degraded in situ by endogenous proteolytic enzymes to deac...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(88)90339-9
更新日期：1988-12-01 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：:This study tested the proposition that Na/K-ATPase activity could be involved in the morphogenetic aspects of mouse blastocyst formation by facilitating the localization of certain organelles to apposed borders, the production of nascent blastocoele fluid, and cavitation. It was assumed that such Na/K-ATPase activity ...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(84)90290-2
更新日期：1984-10-01 00:00:00
abstract：:A fundamental feature of cartilage differentiation in the developing limb is the formation of a prechondrogenic cell condensation. An apparently similar process of prechondrogenic cell aggregation occurs in micromass cultures of limb bud mesenchyme with the formation of cellular aggregates which often differentiate in...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(87)90314-9
更新日期：1987-08-01 00:00:00
abstract：:During anuran metamorphosis, larval-type myotubes in both trunk and tail are removed by apoptosis, and only trunk muscles are replaced by newly formed adult-type myotubes. In the present study, we clarified the regulatory mechanisms for specific developmental fates of adult and larval muscles. Two distinct (adult and ...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.2002.0800
更新日期：2002-11-01 00:00:00
abstract：:The mammillary body, a ventral specialization of the caudal hypothalamus, lies close to the transition between epichordal and prechordal parts of the forebrain (Puelles and Rubenstein, 2003). This report examines its presumed causal connection with either prechordal or notochordal mesodermal induction, as well as the ...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2008.05.545
更新日期：2008-08-15 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
pub_type： 杂志文章
doi：10.1006/dbio.1996.0184
更新日期：1996-08-01 00:00:00
abstract：:We describe the identification, biochemical characterisation, and mutation of a novel mouse gene: Sp5. Sp5 encodes a protein having a C-terminal C(2)H(2) zinc finger domain closely related to that of the transcription factor Sp1. In vitro, DNA binding studies show that it binds to the GC box, a DNA motif present in th...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.2000.9878
更新日期：2000-11-15 00:00:00
abstract：:The early mouse embryo undertakes two types of cell division: symmetric that gives rise to the trophectoderm and then placenta or asymmetric that gives rise to inner cells that generate the embryo proper. Although cell division orientation is important, the mechanism regulating it has remained unclear. Here, we identi...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2014.05.009
更新日期：2014-08-15 00:00:00
abstract：:The individual blastomeres of the preimplantation mouse embryo become polarized during the 8-cell stage. Microvilli become restricted to the free surface of the embryo and this region of the membrane shows increased labeling with FITC-Con A and trinitrobenzenesulfonate (TNBS). Previous studies have shown that this pol...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(86)90204-6
更新日期：1986-04-01 00:00:00
abstract：:Cytotrophoblasts are specialized epithelial cells of the human placenta that differentiate to acquire tumor-like properties that allow them to invade the uterus. Concurrently, they develop endothelial-like characteristics. This transformation allows cytotrophoblasts to replace the maternal cells that line uterine vess...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/s0012-1606(03)00449-4
更新日期：2003-11-01 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
pub_type： 杂志文章
doi：10.1006/dbio.1996.0275
更新日期：1996-11-01 00:00:00
abstract：:Malpighian tubules are the osmoregulatory and detoxifying organs of Drosophila and its proper development is critical for the survival of the organism. They are made up of two major cell types, the ectodermal principal cells and mesodermal stellate cells. The principal and stellate cells are structurally and physiolog...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2014.11.003
更新日期：2015-02-15 00:00:00
abstract：:Much progress has been made in elucidating the molecular networks required for specifying retinal cells, including photoreceptors, but the downstream mechanisms that maintain identity and regulate differentiation remain poorly understood. Here, we report that the transcription factor Glass has a dual role in establish...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2016.04.012
更新日期：2016-06-01 00:00:00
abstract：:The t haplotypes are variant forms of the proximal portion of chromosome 17 in the mouse. The t haplotypes alter spermatogenesis and many also contain lethal factors. Although the lethal factors vary between t haplotypes, all t haplotypes have the same effect on sperm, that of altering sperm function in fertilization....
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1993.1002
更新日期：1993-01-01 00:00:00
abstract：:The mouse prostate gland develops by branching morphogenesis from the urogenital epithelium and mesenchyme. Androgens and developmental factors, including FGF10 and SHH, promote prostate growth (Berman, D.M., Desai, N., Wang, X., Karhadkar, S.S., Reynon, M., Abate-Shen, C., Beachy, P.A., Shen, M.M., 2004. Roles for He...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2005.08.018
更新日期：2005-12-15 00:00:00
abstract：:The relationship between ascorbic acid concentration and cellular transport mechanisms was studied in chicken embryos (Gallus gallus domesticus). Unincubated (Day 0) fertile eggs did not contain detectable levels of ascorbic acid as assayed by high performance liquid chromatography with electrochemical detection. Howe...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(90)90298-w
更新日期：1990-06-01 00:00:00
abstract：:During organogenesis, Sonic hedgehog (Shh) possesses dual functions: Shh emanating from midline structures regulates the positioning of bilateral structures at early stages, whereas organ-specific Shh locally regulates organ morphogenesis at later stages. The mesonephros is a transient embryonic kidney in amniote, whe...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2013.12.026
更新日期：2014-02-01 00:00:00
abstract：:Cadherin-11 (cad-11) is a novel member of the cadherin family of cell adhesion molecules, having recently been identified by means of the polymerase chain reaction. To study the function and expression of this molecule, we cloned mouse, cad-11 cDNA. Transfection of L cells with cDNA led them to acquire a typical cadhe...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1995.1149
更新日期：1995-05-01 00:00:00
abstract：:Spermatogenesis is initiated by the interaction of germ cells and somatic cells in seminiferous tubules. We used cDNA microarrays and representational difference analysis to identify genes that are expressed in the testis of the jsd/jsd mutant mouse, which contains only type A spermatogonial germ cells and Sertoli cel...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.2002.0671
更新日期：2002-06-15 00:00:00
abstract：:To investigate the spatiotemporal dynamics of skin pattern formation, we developed a simple method for artificially disarranging the placement of all three pigment cell types in the body trunk of zebrafish (Danio rerio). We generated transgenic fish with melanophores that ectopically expressed a variant of channelrhod...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2018.12.019
更新日期：2020-04-01 00:00:00
abstract：:Because the formation of a mature nerve terminal requires the accumulation of large quantities of synaptic vesicles, the expression of synaptic vesicle proteins would be expected to correlate with synaptogenesis. However, previous studies have provided conflicting evidence on this point. We have examined the developme...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1993.1244
更新日期：1993-09-01 00:00:00
abstract：:In the retinotectal projection, the Eph receptor tyrosine kinase ligands ephrinA2 and ephrinA5 are differentially expressed not only in the tectum, but also in a high-nasal-to-low-temporal pattern in the retina. Recently, we have shown that retrovirally driven overexpression of ephrinA2 on retinal axons leads to topog...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1999.9489
更新日期：1999-12-01 00:00:00
abstract：:Activation and role of mitogen-activated protein (MAP) kinase (MAPK) during mitosis are still matters of controversy in early embryos. We report here that an ERK-like protein is present and highly phosphorylated in unfertilized sea urchin eggs. This MAPK becomes dephosphorylated after fertilization and a small pool of...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2005.03.008
更新日期：2005-06-01 00:00:00
abstract：:Autoradiography has been used to confirm and to extend previous microspectrophotometric studies (Doerder and DeBault, 1975) on the timing of DNA synthesis during conjugation in Tetrahymena thermophila. The majority of DNA synthesis occurs at the expected periods preceding gamete formation and the two postzygotic divis...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(87)90500-8
更新日期：1987-12-01 00:00:00
abstract：:We have previously reported the detection of cAMP waves within monolayers of aggregating Dictyostelium discoideum cells (K. J. Tomchik and P.N. Devreotes, 1981, Science 212, 443-446). The computer-assisted analysis presented here of the fluorographic images of the cAMP waves reveals (1) all the waves have a consistent...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(83)90178-1
更新日期：1983-04-01 00:00:00
abstract：:Unlike adult mammals, adult frogs regrow their optic nerve following a crush injury, making Xenopus laevis a compelling model for studying the molecular mechanisms that underlie neuronal regeneration. Using Translational Ribosome Affinity Purification (TRAP), a method to isolate ribosome-associated mRNAs from a target...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2016.06.003
更新日期：2017-06-15 00:00:00
abstract：:Skeletal muscle fibers express members of the myosin heavy chain (MyHC) gene family in a fiber-type-specific manner. In avian skeletal muscle it is the expression of the slow MyHC isoforms that most clearly distinguishes slow- from fast-contracting fiber types. Two hypotheses have been proposed to explain fiber-type-s...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1997.8619
更新日期：1997-08-01 00:00:00
abstract：:To analyse cell migration and the differentiation potential of migratory stem cells in Hydractinia, we generated animals with an eGFP reporter gene stably expressed and transmitted via the germline. The transgene was placed under the control of two different actin promoters and the promoter of elongation factor-1α. On...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2010.08.017
更新日期：2010-12-01 00:00:00
abstract：:In this investigation, we characterize the embryonic and adult actins and describe the embryonic expression of a muscle actin in the ascidian Styela. Two-dimensional polyacrylamide gel electrophoresis showed that embryos, tadpole larvae, and adult organs contain three major and two minor isoforms of actin. Two of the ...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(87)90404-0
更新日期：1987-10-01 00:00:00
