Abstract：
:Cardiomyocyte differentiation overall has been analyzed in vivo and in vitro at the molecular level by homologous recombination, gene mutation studies, and by transgenics; however, the roles of many signal transduction mechanisms that drive this differentiation process are still not fully understood. One set of signal transduction components that has been studied in detail in mature, differentiated cardiomyocytes is the PKC isotype superfamily. However, while the function of each isotype is slowly being uncovered in adult cardiomyocytes, limited information persists concerning their function in the differentiation process of cardiomyocytes. To begin analyzing the function of specific PKC isotypes in the differentiation process, we employed an established model for differentiating ES cells into cardiomyocyte-positive embryoid bodies (EBs) in vitro. RT-PCR, Western analyses, and confocal microscopy all showed that the expression of specific PKC isotypes was significantly changed as ES cells differentiated into cardiomyocytes. More importantly, by using antagonists specific for each isotype we found that this change was a final step in the differentiation process. PKC beta and zeta downregulation served to promote differentiation (beating), while upregulation of PKC epsilon appeared to amplify differentiation (beating). Finally, melding classical tools (i.e., ionic exchange glass beads) with recently developed methods for differentiating ES cells creates a possible novel technique for investigating differentiation of ES cells into cardiomyocytes as well as other cell types.
journal_name
Dev Bioljournal_title
Developmental biologyauthors
Zhou X,Quann E,Gallicano GIdoi
10.1016/s0012-1606(02)00080-5subject
Has Abstractpub_date
2003-03-15 00:00:00pages
407-22issue
2eissn
0012-1606issn
1095-564Xpii
S0012160602000805journal_volume
255pub_type
杂志文章abstract：:Two 80- to 100-kb chromosomal replicons containing clustered chorion genes amplify in the ovarian follicle cells during the final 22 hr of Drosophila oogenesis. We have studied the relationship between amplification and transcription within one of these domains, located at 7E10-7F3,4 on the X chromosome. A tandem clus...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(86)90372-6
更新日期：1986-09-01 00:00:00
abstract：:We have performed a detailed analysis of the expression pattern of the three gnathostome Otx classes in order to gain new insights into their functional evolution. Expression patterns were examined in the developing eye of a chondrichthyan, the dogfish, and an amniote, the chick, and compared with the capacity of para...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2004.11.019
更新日期：2005-02-15 00:00:00
abstract：:During development and maturation, mammalian oocytes are surrounded by the zona pellucida which in the mouse is comprised of three sulfated glycoproteins, ZP-1, ZP-2, and ZP-3. Previously, monoclonal antibodies to ZP-2 have been isolated. The isolation and characterization of monoclonal antibodies specific for ZP-3, t...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(85)90454-3
更新日期：1985-06-01 00:00:00
abstract：:Segmentation is a key step in embryonic development. Acting in all germ layers, it is responsible for the generation of antero-posterior asymmetries. Hox genes, with their diverse expression in individual segments, are fundamental players in the determination of different segmental fates. In vertebrates, Hox gene prod...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2010.04.016
更新日期：2010-07-01 00:00:00
abstract：:In tetrapods, the anteroposterior (AP) patterning of the limb is under the control of the antagonistic activities of the secreted factor Sonic hedgehog (Shh) and Gli3R, the truncated repressor form of the transcription factor Gli3. In this report, we show that Msx1 and Msx2 are targets and downstream effectors of Gli3...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2009.04.038
更新日期：2009-07-15 00:00:00
abstract：:NK genes are related pan-metazoan homeobox genes. In the fruitfly, NK genes are clustered and involved in patterning various mesodermal derivatives during embryogenesis. It was therefore suggested that the NK cluster emerged in evolution as an ancestral mesodermal patterning cluster. To test this hypothesis, we cloned...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2008.02.013
更新日期：2008-05-15 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
abstract：:The zebrafish T-box transcription factors spadetail (spt) and the brachyury ortholog no tail (ntl) are together essential for posterior mesoderm formation. In addition to being functionally redundant, spt and ntl also genetically interact with zygotic mutant alleles of one-eyed pinhead (Zoep), leading to synergistic m...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2003.09.008
更新日期：2003-12-15 00:00:00
abstract：:lilliputian (lilli), the sole Drosophila member of the FMR2/AF4 (Fragile X Mental Retardation/Acute Lymphoblastic Leukemia) family of transcription factors, is widely expressed with roles in segmentation, cellularization, and gastrulation during early embryogenesis with additional distinct roles at later stages of emb...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2006.10.027
更新日期：2007-01-15 00:00:00
abstract：:Evolutionary comparisons between Caenorhabditis elegans and the satellite organism Pristionchus pacificus revealed major differences in the regulation of nematode vulva development. For example, Wnt signaling is part of a negative signaling system that prevents vulva formation in P. pacificus, whereas it plays a posit...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2006.01.034
更新日期：2006-05-01 00:00:00
abstract：:Primordial germ cells (PGCs) are the embryonic precursors of the adult gametes. Although restricted in developmental potency, PGCs express many of the same molecular markers as pluripotent embryonic stem (ES) cells and can give rise to embryonal carcinoma (EC) cells, the stem cells of testicular tumors, in vivo. Likew...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2007.08.029
更新日期：2007-11-15 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
pub_type： 杂志文章
doi：10.1006/dbio.1996.0050
更新日期：1996-02-25 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：:Quantification of GFP reporter gene expression at single cell level in living sea urchin embryos can now be accomplished by a new method of confocal laser scanning microscopy (CLSM). Eggs injected with a tissue-specific GFP reporter DNA construct were grown to gastrula stage and their fluorescence recorded as a series...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2006.06.016
更新日期：2006-11-15 00:00:00
abstract：:Complex intrinsic and extrinsic mechanisms determine neural cell fate during development of the nervous system. Using Id4 deficient mice, we show that Id4 is required for normal development of the central nervous system (CNS), timing neural differentiation in the developing forebrain. In the absence of Id4, the ventri...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2005.02.001
更新日期：2005-04-15 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
pub_type： 杂志文章
doi：10.1006/dbio.1995.8045
更新日期：1995-12-01 00:00:00
abstract：:We report periodic movements during erection of Dictyostelium discoideum (Dd) sorocarps. Our observations lead to the working hypothesis that Dd sorocarp erection occurs by two superimposed processes: one periodic, with a modal period of 6 1/2 min, and one continuous. We tentatively identify the periodic process with ...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(76)90237-2
更新日期：1976-09-01 00:00:00
abstract：:Spermatogonial stem cells are required for the initiation of spermatogenesis and the continuous production of sperm. In addition, they can acquire pluripotency and differentiate into derivatives of the three embryonic germ layers when cultured in the appropriate conditions. Therefore, understanding the signaling pathw...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2006.12.013
更新日期：2007-04-01 00:00:00
abstract：:Primary mesenchyme cell migration in the sea urchin embryo is inhibited by sulfate deprivation and exposure to exogenous beta-D-xylosides, two treatments known to disrupt proteoglycan synthesis. We show that in the developing sea urchin, exogenous xyloside affects the synthesis by the primary mesenchyme cells of a ver...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(91)90089-l
更新日期：1991-02-01 00:00:00
abstract：:The segmentation of somites from the paraxial mesoderm is a crucial event in vertebrate embryonic development; however, the mechanisms underlying this process are not well understood. In a yeast two-hybrid screen we have identified the novel basic-helix-loop-helix (bHLH) protein cMeso-1 which is expressed in the preso...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1998.8919
更新日期：1998-07-15 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：:To determine whether spontaneous release of transmitter from the growth cones of neurons exhibits properties similar to the spontaneous release which occurs from the neurons at the neuromuscular junction, release of transmitter from the growth cones of Xenopus neurons in culture was monitored in salines containing var...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(86)90172-7
更新日期：1986-02-01 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
abstract：:We report here the identification and characterization of a novel gene, T1 alpha, expressed in high abundance in adult rat lung, fetal lung, and early fetal brain. T1 alpha was identified by a monoclonal antibody previously shown to be specific for an antigen expressed by alveolar epithelial type I cells. The cDNA for...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1995.1024
更新日期：1995-01-01 00:00:00
abstract：:We previously demonstrated that male mice deficient in the soluble adenylyl cyclase (sAC) are sterile and produce spermatozoa with deficits in progressive motility and are unable to fertilize zona-intact eggs. Here, analyses of sAC(-/-) spermatozoa provide additional insights into the functions linked to cAMP signalin...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2006.05.038
更新日期：2006-08-15 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
pub_type： 杂志文章
doi：10.1006/dbio.1996.0219
更新日期：1996-09-15 00:00:00
abstract：:A cDNA of the sea urchin Strongylocentrotus purpuratus was identified as encoding polyubiquitin and used to detect a single gene with transcripts containing multiple ubiquitin coding units. Polyubiquitin transcripts exist as a 3.2-kb RNA in polyribosomes and as three higher molecular weight RNAs in purified nuclei. Th...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(91)90124-l
更新日期：1991-06-01 00:00:00
abstract：:Electroporation-based assays were used to test whether the myogenic regulatory factor (MRF) of Ciona intestinalis (CiMRF) interferes with endogenous developmental programs, and to evaluate the importance of its unusual N-terminus for muscle development. We found that CiMRF suppresses both notochord and endoderm develo...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2018.10.010
更新日期：2019-04-15 00:00:00
abstract：:In the full grown oocyte of Xenopus laevis, a sodium permeability can be induced by depolarization to positive potential with current injection. Voltage-clamp analysis has shown that depolarization causes a long-lasting modification of the membrane during which voltage-gated sodium channels become functional. In the p...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(83)90302-0
更新日期：1983-10-01 00:00:00
abstract：:Hox genes can function as key drivers of segment identity, with Hox mutations in Drosophila often resulting in dramatic homeotic transformations. In addition, however, they can serve other essential functions. In mammals, the study of Hox gene roles in development is complicated by the presence of four Hox clusters wi...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2018.03.020
更新日期：2018-06-15 00:00:00
