Abstract：
:Patterning of the early neural tube is achieved in part by the inductive signals, which arise from neuroepithelial signaling centers. The zona limitans intrathalamica (ZLI) is a neuroepithelial domain in the alar plate of the diencephalon which separates the prethalamus from the thalamus. The ZLI has recently been considered to be a possible secondary organizer, effecting its inductions via sonic hedgehog (Shh), a signaling molecule which drives morphogenetic information for the thalamus. Using experimental embryological techniques involving the generation of chimeric embryos, we show that the formation of the ZLI in the diencephalic alar plate is due to an interaction between the prechordal and epichordal plate neuroepithelia. We also provide evidence that Shh expression in the ZLI underlies the morphogenetic activity of this putative diencephalic organizer. Ectopic Shh led to the auto-induction of its own gene expression in host cells, as well as to the expression of other genes involved in diencephalic regionalization and histogenesis. Analysis of long-term surviving embryos after Shh ectopic expression demonstrated that Shh was able to induce thalamic structures and local overgrowth. Overall, these results indicate that Shh expressed in the ZLI plays an important role in diencephalic growth and in the development of the thalamus.
journal_name
Dev Bioljournal_title
Developmental biologyauthors
Vieira C,Garda AL,Shimamura K,Martinez Sdoi
10.1016/j.ydbio.2005.05.031subject
Has Abstractpub_date
2005-08-15 00:00:00pages
351-63issue
2eissn
0012-1606issn
1095-564Xpii
S0012-1606(05)00357-Xjournal_volume
284pub_type
杂志文章abstract：:A follicular cDNA library from Bombyx mori (576 clones) was screened to obtain a representative sample of chorion sequences differentially expressed during the early period of choriogenesis. Ten selected sequences were characterized by Northern analysis and by dot blots of stage-specific RNA. Five of these sequences (...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(85)90408-7
更新日期：1985-12-01 00:00:00
abstract：:In studies initially focused on roles of nonmuscle myosin IIA (NMIIA) in the developing mouse epidermis, we have discovered that a previously described cytokeratin 5 (K5)-Cre gene construct is expressed in early embryo development. Mice carrying floxed alleles of the nonmuscle myosin II heavy chain gene (NMHC IIA(flox...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2013.07.017
更新日期：2013-10-01 00:00:00
abstract：:Cleft palate is one of the most common craniofacial congenital defects in humans. It is associated with multiple genetic and environmental risk factors, including mutations in the genes encoding signaling molecules in the sonic hedgehog (Shh) pathway, which are risk factors for cleft palate in both humans and mice. Ho...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2018.07.003
更新日期：2018-09-01 00:00:00
abstract：:The nuclear receptor SpCOUP-TF is the highly conserved sea urchin homologue of the COUP family of transcription factors. Previous results from our laboratory demonstrated that SpCOUP-TF transcripts are localized in the egg and asymmetrically distributed in the early embryonic blastomeres (A. Vlahou et al., 1996, Devel...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1999.9456
更新日期：2000-02-15 00:00:00
abstract：:Prestalk cells are found in the anterior 15% of slugs of Dictyostelium discoideum and prespore cells are found in the remaining posterior portions. Neutral red staining as well as immunostaining with antisera prepared against spores or a spore-coat protein has indicated that there are cells in the posterior region whi...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(85)90318-5
更新日期：1985-02-01 00:00:00
abstract：:Antibodies to nonerythroid alpha spectrin (p 230) were used to study the distribution of this polypeptide in mouse germ cells, zygote, and early embryonic cells. In the primordial germ cells, fetal oocytes, and spermatogonia, spectrin was found predominantly in the form of a narrow condensed subplasmalemmal band, as i...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(86)90389-1
更新日期：1986-03-01 00:00:00
abstract：:Suppression of wing fate and specification of haltere fate in Drosophila by the homeotic gene Ultrabithorax is a classical example of Hox regulation of serial homology (Lewis, E.B. 1978. Nature 276, 565-570) and has served as a paradigm for understanding homeotic gene function. We have used DNA microarray analyses to ...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2005.12.022
更新日期：2006-03-15 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
abstract：:Drosophila Polycomb Repressive Complex 2 (PRC2) is a lysine methyltransferase that trimethylates histone H3 lysine 27 (H3K27me3), a modification essential for Polycomb silencing. Mutations in its catalytic subunit, E(Z), that abolish its methyltransferase activity disrupt Polycomb silencing, causing derepression of Po...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2011.12.007
更新日期：2012-04-15 00:00:00
abstract：:beta-Catenin was originally identified biochemically as a protein that binds E-cadherin in cultured cells and that interaction was later shown to be essential for cadherin function. Independently, armadillo, the beta-catenin homolog in Drosophila melanogaster, was identified as a segment polarity gene necessary for th...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1997.8739
更新日期：1997-12-15 00:00:00
abstract：:Little is known about the biochemical changes underlying the morphological differentiation of the sea urchin egg during oogenesis. Because of this and the essential role of gamete recognition in fertilization, we studied the developmental expression of the recently identified egg surface receptor for sperm during ooge...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1994.1233
更新日期：1994-09-01 00:00:00
abstract：:Retinal ganglion cells (RGCs) are the first cell type to differentiate during retinal histogenesis. It has been postulated that specified RGCs subsequently influence the number and fate of the remaining progenitors to produce the rest of the retinal cell types. However, several genetic knockout models have argued agai...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2008.01.015
更新日期：2008-04-15 00:00:00
abstract：:Cells that overexpress PKA as a consequence of carrying multiple copies of the gene encoding the catalytic subunit can be induced to sporulate when developing as single cells. A peptide phosphorylated by PKA, termed SDF-1, has recently been shown to stimulate this process (Anjard et al., 1997). Several genes have been...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1997.8804
更新日期：1998-01-15 00:00:00
abstract：:Although local epithelial-mesenchymal tissue interactions which are presumably mediated by extracellular matrix molecules are important regulators of tooth morphogenesis and differentiation, our studies have indicated that these developmental processes also depend on circulating molecules. The iron-carrying serum prot...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(85)90437-3
更新日期：1985-09-01 00:00:00
abstract：:Early embryonic cells are capable of acquiring numerous developmental fates until they become irreversibly committed to specific lineages depending on intrinsic determinants and/or regional interactions. From fertilization to gastrulation, such pluripotent cells first increase in number and then turn to undergoing dif...
journal_title：Developmental biology
pub_type： 杂志文章,评审
doi：10.1016/j.ydbio.2019.04.014
更新日期：2019-08-15 00:00:00
abstract：:Differences are demonstrated in the chondrogenic potential of cells derived from the distal and proximal halves of chick wing buds from as early as stage 23, prior to the appearance of overt cartilage differentiation. In high cell density cultures, cells obtained from the distal portions of stage 23 or 24 limb buds ar...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(83)90063-5
更新日期：1983-05-01 00:00:00
abstract：:The unfertilized oocyte contains various granules which serve as storage sites for proteins, the majority which are yolk granules or platelets. Yolk granules are thought to provide the developing embryo with nutrients essential for its survival, while other granules contain proteins such as enzymes and extracellular m...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1995.1040
更新日期：1995-02-01 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
abstract：:The distribution of the extracellular matrix protein tenascin was studied in the developing chick visual system to determine its possible regulatory role in retinotectal development. Little tenascin was present in the retinal optic fiber layer, and the optic nerve and tract, but was abundant in the stratum opticum of ...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1993.1076
更新日期：1993-03-01 00:00:00
abstract：:We recently discovered that in rat spermatids, kinesin light chain KLC3 can associate with outer dense fibers, major sperm tail components, and accumulates in the sperm midpiece. Here, we show that mitochondria isolated from rat-elongating spermatids have bound KLC3. Immunoelectron microscopy indicates that the associ...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2004.07.014
更新日期：2004-11-01 00:00:00
abstract：:In most ascidians, metamorphosis of tadpole-like swimming larvae is accompanied by dynamic changes in their shape to form sessile adults. The mechanisms underlying ascidian metamorphosis have been debated for a long time. Although recent molecular studies have revealed the presence of various molecules involving in th...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2008.11.026
更新日期：2009-02-15 00:00:00
abstract：:The kidney of the Gpc3-/ mouse, a novel model of human renal dysplasia, is characterized by selective degeneration of medullary collecting ducts preceded by enhanced cell proliferation and overgrowth during branching morphogenesis. Here, we identify cellular and molecular mechanisms underlying this renal dysplasia. Gl...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.2000.0127
更新日期：2001-03-01 00:00:00
abstract：:In mouse chimeras with parthenogenetic cell contribution, the skeletal musculature appears to be largely devoid of parthenogenetically derived cells. To analyze the appearance and early distribution of myotomal cells in parthenotes, we determined the expression of the muscle-specific transcription factors myogenin, MY...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1994.1004
更新日期：1994-01-01 00:00:00
abstract：:During early vertebrate development, members of the transforming growth factor beta (TGFbeta) family play important roles in a variety of processes, including germ layer specification, patterning, cell differentiation, migration, and organogenesis. The activities of TGFbetas need to be tightly controlled to ensure the...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/s0012-1606(02)00075-1
更新日期：2003-03-01 00:00:00
abstract：:Previous studies in sea urchin embryos have demonstrated that nuclearization of beta-catenin is essential for initial steps in the specification of endoderm and mesenchyme, which are derived from vegetal blastomeres. This process begins at the 4th and extends through the 9th cleavage stage, an interval in which the Sp...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/s0012-1606(03)00331-2
更新日期：2003-09-15 00:00:00
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journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1998.9092
更新日期：1998-12-15 00:00:00
abstract：:Vertebrate hematopoiesis is characterized by two evolutionally conserved phases of development, i.e., primitive hematopoiesis, which is a transient phenomenon in the early embryo, and definitive hematopoiesis, which takes place in the later stages. Beni fuji (bef) was originally isolated as a medaka mutant that has an...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2010.06.031
更新日期：2010-09-15 00:00:00
abstract：:During somitogenesis, oscillatory expression of genes in the notch and wnt signaling pathways plays a key role in regulating segmentation. These oscillations in expression levels are elements of a species-specific developmental mechanism. To date, the periodicity and components of the human clock remain unstudied. Her...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2007.02.007
更新日期：2007-05-01 00:00:00
abstract：:During mammalian spermiogenesis transitional proteins and protamines replace histones on the DNA as the chromatin condenses. While previous studies suggested that histone genes are inactive postmeiotically, we have shown both by steady-state RNA analysis and nuclear run-off transcription assays that histone 2b (H2b) t...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(89)90299-6
更新日期：1989-05-01 00:00:00
abstract：:A functional ribosomal protein mRNA, encoding the 60 S subunit protein L1, has been synthesized in vitro using bacteriophage SP6 RNA polymerase. This mRNA directs the synthesis of a product indistinguishable from L1 protein purified from Xenopus ovarian ribosomes. Our results show that L1 synthesis in stage VI oocytes...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(88)90247-3
更新日期：1988-03-01 00:00:00
