Abstract：
:Ammonium transporter C (AmtC) is one of three transporters in Dictyostelium that have been proposed to regulate entry and exit of ammonia in a cell type dependent manner and to mediate ammonia signaling. Previous work demonstrated that disruption of the amtC gene results in a slugger phenotype in which the cells remain as migrating slugs when they should form fruiting bodies. More detailed studies on the null strain revealed that differentiation of prestalk cell types was delayed and maintenance of prestalk cell gene expression was defective. There was little or no expression of ecmB, a marker for the initiation of culmination. Normal expression of CudA, a nuclear protein required for culmination, was absent in the anterior prestalk zone. The absence of CudA within the tip region was attributable to the lack of nuclear localization of the transcription factor STATa, despite expression of adenylyl cyclase A mRNA in the slug tips. Disruption of the histidine kinase gene dhkC in the amtC null strain restored STATa and CudA expression and the ability to culminate. The results suggest that the lack of nuclear translocation of STATa results from low cAMP due to a misregulated and overactive DhkC phosphorelay in the amtC null strain.
journal_name
Dev Bioljournal_title
Developmental biologyauthors
Kirsten JH,Xiong Y,Dunbar AJ,Rai M,Singleton CKdoi
10.1016/j.ydbio.2005.08.043subject
Has Abstractpub_date
2005-11-01 00:00:00pages
146-56issue
1eissn
0012-1606issn
1095-564Xpii
S0012-1606(05)00570-1journal_volume
287pub_type
杂志文章abstract：:Cdc42, a member of the Rho family of GTP binding proteins, functions in the formation of polarized actin structures, in elongation of cell shape, and in cell signaling. Although genetic mutations previously have not been available in multicellular organisms, studies have attempted to discern Cdc42 functions in organis...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.2000.9671
更新日期：2000-05-01 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：:In neural plate stage Xenopus embryos, XlHbox 8 expression marks anterior endodermal cells fated to develop into pancreas/duodenum, and expression continues in adult pancreas in exocrine duct, acinar, and islet cells. Here, XlHbox 8 is used as a marker in experiments addressing the mechanisms of early endodermal patte...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1995.1275
更新日期：1995-09-01 00:00:00
abstract：:We show that the intermediate filament protein nestin is expressed in myogenic cells and that multiple mechanisms regulate nestin expression at different stages of myogenesis. Cultured embryonic, fetal, and neonatal mouse limb myoblasts initially expressed nestin in the absence of the four muscle regulatory factors (M...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1994.1248
更新日期：1994-09-01 00:00:00
abstract：:A gene regulatory network subcircuit comprising the otx, wnt8, and blimp1 genes accounts for a moving torus of gene expression that sweeps concentrically across the vegetal domain of the sea urchin embryo. Here we confirm by mutation the inputs into the blimp1cis-regulatory module predicted by network analysis. Its es...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2007.10.042
更新日期：2008-01-15 00:00:00
abstract：:Retinoic acid (RA) signaling is required for normal development of multiple organs. However, little is known about how RA influences the initial stages of lung development. Here, we used a combination of genetic, pharmacological and explant culture approaches to address this issue, and to investigate how signaling by ...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2005.10.045
更新日期：2006-03-01 00:00:00
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journal_title：Developmental biology
pub_type： 杂志文章,评审
doi：10.1016/j.ydbio.2018.12.004
更新日期：2019-07-01 00:00:00
abstract：:Cyclic protein-2 (CP-2) is secreted in vitro in substantial amounts by mature rat Sertoli cells in intact Stage VI and Stage VII seminiferous tubules. This stage-dependent secretion has led us to postulate that the biosynthesis of this molecule is stimulated by germ cells at a specific state of development. In order t...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(88)90412-5
更新日期：1988-11-01 00:00:00
abstract：:Mouse mammary ductal cells cultured in type I collagen gels give rise to three-dimensional multicellular outgrowths consisting of thin spikes which are often branched, and which may have pointed or blunt ends. The significance of these spikes to normal ductal morphogenesis has been unclear, since identical structures ...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(84)90036-8
更新日期：1984-07-01 00:00:00
abstract：:Notch pathway is crucial for stem/progenitor cell maintenance, growth and differentiation in a variety of tissues. Using a transgenic cell ablation approach, we found in our previous study that cells expressing Notch1 are crucial for prostate early development and re-growth. Here, we further define the role of Notch s...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2005.11.009
更新日期：2006-02-01 00:00:00
abstract：:VegT is an essential maternal regulator of germ layer specification in Xenopus. The localization of VegT mRNA to the vegetal cortex of the oocyte during oogenesis ensures its inheritance by vegetal and not animal cells, and directs the differentiation of vegetal cells into endoderm. Similarly localized mRNAs, Vg1 and ...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.2001.0495
更新日期：2001-12-15 00:00:00
abstract：:During metamorphosis, the steroid hormone 20-hydroxyecdysone induces morphogenesis of imaginal discs, including the formation of appendages. IMP-E2 is an ecdysone-dependent, single-copy Drosophila gene, whose transcripts accumulate rapidly in imaginal discs in response to the hormone. The IMP-E2 product is secreted at...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(90)90084-v
更新日期：1990-08-01 00:00:00
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journal_title：Developmental biology
pub_type： 杂志文章,评审
doi：10.1016/0012-1606(92)90067-q
更新日期：1992-12-01 00:00:00
abstract：:Sea urchin eggs secrete a serine protease activity, CGSP1, at fertilization that is essential for the block to polyspermy. Several targets of this proteolytic activity on the plasma membrane were identified here using a cell surface biotinylation approach. Amino acid microsequencing of one of these proteins led to the...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2004.03.043
更新日期：2004-08-01 00:00:00
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journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1995.1262
更新日期：1995-09-01 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
pub_type： 杂志文章
doi：10.1006/dbio.1996.0310
更新日期：1996-11-25 00:00:00
abstract：:Initial studies suggested that spatial organization of the putative polar body contractile ring was determined by the peripheral aster in Spisula [Biol. Bull. 205 (2003) 192]. Here we report detailed supporting observations, including testing of aster and ring function with inhibitors. The metaphase peripheral aster w...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2004.01.033
更新日期：2004-05-15 00:00:00
abstract：:Pancreatic organogenesis relies on a complex interplay of cell-autonomous and extracellular signals. We demonstrate that the morphogen sonic hedgehog (Shh) is required for pancreatic development in zebrafish. Genetic mutants of Shh and its signaling pathway establish this dependence as specific to endocrine, but not e...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.2002.0573
更新日期：2002-04-01 00:00:00
abstract：:The distribution and ontogeny of four neuropeptides in developing chick lumbosacral sensory and sympathetic ganglia were studied using immunohistochemical techniques. Antibodies to two of these peptides, substance P (SP) and calcitonin gene-related peptide (CGRP), stained small neurons in the medial part of the dorsal...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(86)90137-5
更新日期：1986-08-01 00:00:00
abstract：:Gastrulation is the first major morphogenetic movement in development and requires dynamic regulation of cell adhesion and the cytoskeleton. Caenorhabditis elegans gastrulation begins with the migration of the two endodermal precursors, Ea and Ep, from the surface of the embryo into the interior. Ea/Ep migration provi...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2010.05.507
更新日期：2010-08-15 00:00:00
abstract：:The embryonic dorsal vessel in Drosophila possesses anteroposterior polarity and is subdivided into two chamber-like portions, the aorta in the anterior and the heart in the posterior. The heart portion features a wider bore as compared with the aorta and develops inflow valves (ostia) that allow the pumping of hemoly...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.2002.0839
更新日期：2002-11-15 00:00:00
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journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2018.01.001
更新日期：2018-02-15 00:00:00
abstract：:In mammalian and amphibian oocytes, the meiotic arrest at the G2/M transition is dependent on cAMP regulation. Because genetic inactivation of a phosphodiesterase expressed in oocytes prevents reentry into the cell cycle, suggesting autonomous cAMP synthesis, we investigated the presence and properties of the G-protei...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2005.08.019
更新日期：2005-11-15 00:00:00
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journal_title：Developmental biology
pub_type： 杂志文章
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更新日期：2011-06-01 00:00:00
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journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2007.11.007
更新日期：2008-01-15 00:00:00
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journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2009.03.015
更新日期：2009-06-15 00:00:00
abstract：:The respective role of Pax2 and Pax8 in early kidney development in vertebrates is poorly understood. In this report, we have studied the roles of Pax8 and Pax2 in Xenopus pronephros development using a loss-of-function approach. Our results highlight a differential requirement of these two transcription factors for p...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2014.10.022
更新日期：2015-01-15 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：:We describe the characterization and a functional analysis in Xenopus development of RalB, a small G protein. RalB RNA and protein are detectable during oogenesis and early development, but the gene is expressed only weakly in adult tissues. The RalB transcripts are processed by poly(A) extension during oocyte maturat...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1999.9254
更新日期：1999-05-15 00:00:00
abstract：:The differentiation of three anterior pituitary cell types is regulated by the tissue-specific POU domain factor Pit-1, which is initially expressed on Embryonic Day 13.5-14 in mice. The Pit-1 gene remains continuously, highly expressed in the somatotrope, thyrotrope, and lactotrope cells of the adult. Using the Pit-1...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1996.8472
更新日期：1997-02-01 00:00:00
