Abstract：
:The maintenance of pluripotential embryonic stem (ES) cells is dependent on the cytokine LIF. This report documents the mRNA expression profiles of LIF and the two components of the LIF-receptor complex, LIF-R and gp130, during early mouse embryogenesis. These mRNAs were undetectable in 1- or 2-cell embryos, but all were present by the blastocyst stage. LIF transcripts were localised in the differentiated trophectoderm, and were absent from the pluripotential inner cell mass. In contrast, LIF-R mRNA was found in the inner cell mass but not in the trophectoderm. This complementary pattern of expression is suggestive of a paracrine coupling between stem cells and differentiated progeny at the earliest stage of mammalian development. After implantation, transcripts for all components were down-regulated in the embryo. High levels of LIF-R and gp130 mRNAs were observed in the deciduum, however. These dynamic, tissue-specific expression patterns are consistent with regulatory roles for LIF or related cytokines, both in the maintenance of pluripotency in the mouse embryo, and in development of the foeto-maternal interface.
journal_name
Mech Devjournal_title
Mechanisms of developmentauthors
Nichols J,Davidson D,Taga T,Yoshida K,Chambers I,Smith Adoi
10.1016/0925-4773(96)00531-xsubject
Has Abstractpub_date
1996-07-01 00:00:00pages
123-31issue
2eissn
0925-4773issn
1872-6356pii
092547739600531Xjournal_volume
57pub_type
杂志文章abstract：:The availability of the draft sequence of the chicken genome will undoubtedly propel an already important vertebrate research model, the domestic chicken, to a new level. This review describes aspects of chicken natural history and cross-disciplinary biological value. The diversity of extant genetic variants available...
journal_title：Mechanisms of development
pub_type： 杂志文章,评审
doi：10.1016/j.mod.2004.05.018
更新日期：2004-09-01 00:00:00
abstract：:We have identified ramshackle (ram) as a dominant suppressor of hedgehog loss-of-function in the developing Drosophila eye. We have characterized the gene and it encodes a double bromodomain protein with eight WD40 repeats. The Ram protein is localized predominantly to polytene chromosome interbands and is required fo...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/j.mod.2006.06.007
更新日期：2006-08-01 00:00:00
abstract：:We have sequenced and defined the expression during rat embryogenesis of the protocadherin fat, the murine homologue of a Drosophila tumour suppressor gene. As previously described for human fat, the sequence encodes a large protocadherin with 34 cadherin repeats, five epidermal growth factor (EGF)-like repeats contai...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/s0925-4773(98)00217-2
更新日期：1999-02-01 00:00:00
abstract：:The homeobox gene superfamily is highly conserved during evolution. These genes act as transcription factors during several important developmental processes through their 60 amino acid homeodomains that recognize and bind to the regulatory region of their target genes. We isolated a novel homeobox gene designated Tex...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/s0925-4773(02)00026-6
更新日期：2002-05-01 00:00:00
abstract：:Commissureless (Comm) is a novel transmembrane molecule necessary both for commissural axons to cross the midline of the Drosophila central nervous system and normal synaptogenesis. Comm is able to reduce cell surface levels of Roundabout (Robo), a receptor for the midline repellent Slit, on commissural axons and unkn...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/s0925-4773(03)00179-5
更新日期：2003-09-01 00:00:00
abstract：:DCC (deleted in colon cancer), Neogenin and UNC-5 are all members of the immunoglobulin superfamily of transmembrane receptors which are believed to play a role in axon guidance by binding to their ligands, the Netrin/UNC-40 family of secreted molecules (Cell. Mol. Life Sci. 56 (1999) 62; Curr. Opin. Genet. Dev. 7 (19...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/s0925-4773(01)00513-5
更新日期：2001-11-01 00:00:00
abstract：:This study compares by immunogold labeling the ultrastructural localization of a hexameric 22S glycoprotein, called toposome, with that of hyalin in unfertilized eggs and cells of hatched sea urchin blastulae. Nearly all hyalin is present in the electron translucent compartment of the cortical granules and in the tran...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/0925-4773(91)90079-l
更新日期：1991-02-01 00:00:00
abstract：:We have used whole mount in situ hybridization to analyze the pattern of expression of the gene Endo 16 in S. purpuratus embryos. The mRNA is first detectable at 18 h post-fertilization in the cytoplasm of blastomeres derived from the Veg2 6th cleavage tier. The number of Endo 16 positive cells increases gradually thr...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/0925-4773(93)90001-e
更新日期：1993-08-01 00:00:00
abstract：:The actin cytoskeleton is implicated in many cellular processes, such as cell adhesion, locomotion, contraction and cytokinesis, which are central to any development. The extent of polymerization, cross-linking, and bundling of actin is regulated by several actin-binding proteins. Knock-out mutations in these proteins...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/s0925-4773(99)00292-0
更新日期：2000-03-01 00:00:00
abstract：:Transcription of the human interphotoreceptor retinoid binding protein (IRBP) gene is strictly tissue specific, being restricted to retinal photoreceptors and pinealocytes. We have previously demonstrated that a sequence named A element, in the IRBP promoter is essential for IRBP gene transcription in vivo. Here we de...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/s0925-4773(98)00162-2
更新日期：1999-04-01 00:00:00
abstract：:We present a complete staging table of normal development for the lungless salamander, Hemidactylium scutatum (Caudata: Plethodontidae). Terrestrial egg clutches from naturally ovipositing females were collected and maintained at 15 °C in the laboratory. Observations, photographs, and time-lapse movies of embryos were...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/j.mod.2014.12.007
更新日期：2015-05-01 00:00:00
abstract：:Msg1 and Mrg1 are founding members of a gene family which exhibit distinct patterns of gene expression during mouse embryogenesis. Sequence analysis reveals that these genes are unlike any other gene identified to date, but they share two near-identical sequence domains. The Msg1 and Mrg1 expression profiles during ea...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/s0925-4773(98)00011-2
更新日期：1998-03-01 00:00:00
abstract：:Cell-cell interactions during embryogenesis have been shown to be important for establishing developmental fates in a number of organisms such as Drosophila and Caenorhabditis. One class of genes shown to mediate this process are receptor-protein tyrosine kinases (R-PTKs). To examine whether R-PTKs might participate i...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/0925-4773(94)90078-7
更新日期：1994-05-01 00:00:00
abstract：:Xenopus embryos in solutions containing suramin show a dose-dependent decrease in the formation of dorsoanterior structures. Continuous treatment with 1 mM suramin produces embryos without mesodermal derivatives but with mesenchymal cells. Brief immersions of 20 min were used to determine the most sensitive stages and...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/0925-4773(94)90054-x
更新日期：1994-01-01 00:00:00
abstract：:We have characterised the transdifferentiation of human HepG2 (hepatoma) cells to pancreatic cells following introduction of an activated version of the pancreatic transcription factor Pdx1 (XlHbox8-VP16). The following questions are addressed: (1) are all types of pancreatic cells produced? (2) is the requirement for...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/j.mod.2005.01.001
更新日期：2005-06-01 00:00:00
abstract：:In the process of cloning murine proteins capable of binding to a regulatory module of the Ncam promoter, we isolated a novel homeobox gene, Barx1, the first vertebrate member of the structural subclass defined by Drosophila BarH1. Here we report its sequence, chromosomal localisation and embryonic expression pattern....
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/0925-4773(94)00343-l
更新日期：1995-05-01 00:00:00
abstract：:The mouse and human Hox complex consists of 39 genes in four linkage groups (A-D). Although the structure and expression patterns of most of these genes have been reported, the 5' members of the Hox C linkage group have been only partially characterized. Herein we report the primary and genomic structure of the mouse ...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/s0925-4773(97)00182-2
更新日期：1998-01-01 00:00:00
abstract：:The chick dermis is known to control the formation of feathers and interfeathery skin in a hexagonal pattern. The evidence that the segregation of two types of fibroblasts involves Delta/Notch signalling is based on three facts. Rings of C-Delta-1-expressing fibroblasts precede and delimit the forming feather primordi...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/s0925-4773(98)00027-6
更新日期：1998-03-01 00:00:00
abstract：:The process of gastrulation is a pivotal step in the formation of the vertebrate body plan. The primary function of gastrulation is the correct placement of precursor tissues for subsequent morphogenesis. There is now mounting evidence that the body plan is established through inductive interactions between germ layer...
journal_title：Mechanisms of development
pub_type： 杂志文章,评审
doi：10.1016/s0925-4773(97)00123-8
更新日期：1997-11-01 00:00:00
abstract：:Splotch mice, which harbour mutations in the Pax3 gene, exhibit neural crest-related abnormalities including pigmentation defects, reduced or absent dorsal root ganglia and failure of cardiac outflow tract septation in homozygotes. Although splotch neural crest cells fail to colonise target tissues, they initiate migr...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/s0925-4773(97)00151-2
更新日期：1997-12-01 00:00:00
abstract：:The germ cell nuclear factor (GCNF, NR6A1) is a nuclear orphan receptor that functions as a transcriptional repressor and is transiently expressed in mammalian carcinoma cells during retinoic acid (RA) induced neuronal differentiation. During Xenopus laevis development, the spatiotemporal expression pattern of embryon...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/s0925-4773(03)00018-2
更新日期：2003-04-01 00:00:00
abstract：:Hsp47 is a heat-shock protein which interacts with newly synthesize procollagen chains in the endoplasmic reticulum (ER) of collagen-secreting cells and is thought to assist in procollagen triple helix assembly and subsequent transport to the cis-Golgi. This is supported by studies which have reported that genes encod...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/s0925-4773(96)00626-0
更新日期：1997-01-01 00:00:00
abstract：:The Ras protein activates at least three different pathways during early development. Two of them regulate mesodermal gene expression and the third is thought to participate in the control of actin cytoskeleton dynamics via the Ral protein. From a yeast two-hybrid screen of a Xenopus maternal cDNA library, we identifi...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/j.mod.2004.07.008
更新日期：2004-12-01 00:00:00
abstract：:Myogenin and CMD1, the chicken homologue of MyoD, transactivate the promoter of the alpha-subunit of the acetylcholine receptor (AChR) in chicken fibroblasts. The expression of these three genes was followed by in situ hybridization. In two-day-old embryos the CMD1 gene is expressed shortly before the AChR alpha-subun...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/0925-4773(92)90018-f
更新日期：1992-03-01 00:00:00
abstract：:In a large-scale gene expression screen 1765 randomly picked cDNAs were analyzed by whole-mount in situ hybridization in Xenopus embryos. Two hundred and seventy three unique, differentially expressed genes were identified, 204 of which are novel in Xenopus. Partial DNA sequences and expression patterns were documente...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/s0925-4773(98)00115-4
更新日期：1998-10-01 00:00:00
abstract：:The homeotic gene abdominal-A (abd-A) is normally expressed in parasegments 7 to 13. We find that the initial distribution of the product is approximately uniform within this domain, but the subsequent elaboration of the expression pattern results in differences between, as well as within, parasegments. We have invest...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/0925-4773(94)90034-5
更新日期：1994-04-01 00:00:00
abstract：:We describe the sequence and expression pattern of Sp5, a novel member of the vertebrate Sp1 transcription factor gene family which consists of at least five members. This gene family is characterized by a highly conserved domain which is formed by three Zn fingers, which bind to the GC box or the GT/CACC box in the p...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/s0925-4773(00)00544-x
更新日期：2001-03-01 00:00:00
abstract：:In multicellular organisms, very little is known about the role of mRNA stability in development, and few proteins involved in degradation pathways have been characterized. We have identified the Drosophila homologue of XRN1, which is the major cytoplasmic 5'-3' exoribonuclease in Saccharomyces cerevisiae. The protein...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/s0925-4773(98)00173-7
更新日期：1998-12-01 00:00:00
abstract：:Transforming growth factor beta 2 (TGF-beta2) plays a critical role in growth, differentiation and cell death, but its function in the developing cerebellum is still uncertain. In this study we analyzed the effects of TGF-beta2 on ex vivo developing cerebellar slice cultures. Proliferation of granule cell precursors p...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/j.mod.2004.10.012
更新日期：2005-04-01 00:00:00
abstract：:During the third larval instar, the steroid moulting hormone ecdysone activates three temporally distinct puff sets on the D. melanogaster salivary gland polytene chromosome: the so-called intermoult, early and late puffs. Hormonal regulation of intermoult puffs is quite complex and, so far, largely not understood. In...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/0925-4773(94)00313-c
更新日期：1995-02-01 00:00:00
