Abstract：
:We have cloned a Caenorhabditis elegans homologue of the Drosophila gap gene hunchback (hb) and have designated it hbl-1 (hunchback-like). hbl-1 encodes a predicted 982-amino-acid protein, containing two putative zinc-finger domains similar to those of Drosophila Hunchback. The gene is transcribed embryonically, but unlike the maternally expressed Drosophila hb, its mRNA is not detected in C. elegans oocytes. A hbl-1::gfp reporter is expressed primarily in ectodermal cells during embryonic and larval development. Double-stranded RNA-interference (RNAi) was used to indicate hbl-1 loss-of-function phenotypes. Progeny of hbl-1(RNAi) hermaphrodites exhibit a range of defects; the most severely affected progeny arrest as partially elongated embryos or as hatching, misshapen L1 larvae. Animals that survive to adulthood exhibit variably dumpy (Dpy), uncoordinated (Unc), and egg-laying defective (Egl) phenotypes, as well as defects in vulval morphology (Pvl). Abnormal organization of hypodermal cells and expression of a hypodermal marker in hbl-1(RNAi) animals suggests that most of the phenotypes observed could be due to improper specification of hypodermal cells. The pattern of hbl-1 expression is similar to that reported for the leech hunchback homologue Lzf-2, suggesting that these proteins may have similar biological functions in diverse species with cellular embryos.
journal_name
Dev Bioljournal_title
Developmental biologyauthors
Fay DS,Stanley HM,Han M,Wood WBdoi
10.1006/dbio.1998.9096subject
Has Abstractpub_date
1999-01-15 00:00:00pages
240-53issue
2eissn
0012-1606issn
1095-564Xpii
S0012-1606(98)99096-0journal_volume
205pub_type
杂志文章abstract：:nautilus (nau), one member of the myogenic regulatory family of bHLH-encoding genes, is expressed in a subset of muscle precursors and differentiated fibers in the Drosophila embryo. To elucidate the role of nautilus in myogenesis, we have misexpressed it using the GAL4-targeted system. We find that ectopic expression...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1996.8434
更新日期：1997-01-15 00:00:00
abstract：:The extracellular matrix of Xenopus laevis oocytes was analyzed before and after meiotic maturation using quick-freeze, deep-etch, rotary-shadow electron microscopy. The perivitelline space (PS) of the meiotically immature oocyte contains a filamentous network which connects microvilli (MV) and follicle cell macrovill...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/s0012-1606(89)80044-2
更新日期：1989-01-01 00:00:00
abstract：:Bullous pemphigoid antisera and monoclonal antibodies to type VII collagen were used to localize hemidesmosomes and anchoring fibrils, respectively, in tissues of developing eyes and healing corneal wounds of New Zealand white rabbits. In the 17-day fetal rabbit eye, both antibodies colocalize to the epithelial-stroma...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(88)90136-4
更新日期：1988-04-01 00:00:00
abstract：:Clotting is critical in limiting hemolymph loss and initiating wound healing in insects as in vertebrates. It is also an important immune defense, quickly forming a secondary barrier to infection, immobilizing bacteria and thereby promoting their killing. However, hemolymph clotting is one of the least understood immu...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2006.03.019
更新日期：2006-07-01 00:00:00
abstract：:The oblique muscle layer in the leech body wall is built upon the processes of a unique identified embryonic cell, the Comb- or C-cell. Each C-cell is composed of a spindle-shaped soma that projects approximately 70 parallel processes through the developing body wall at an angle oblique to the long axis. The morphogen...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(91)90342-z
更新日期：1991-11-01 00:00:00
abstract：:Newts regenerate lost limbs through a complex process involving dedifferentiation, migration, proliferation, and redifferentiation of cells proximal to the amputation plane. To identify the genes controlling these cellular events, we performed a differential display analysis between regenerating and nonregenerating li...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2004.12.003
更新日期：2005-03-01 00:00:00
abstract：:The specification of the five individual hormone-secreting cell types in the anterior pituitary requires a series of sequential cell fate decisions. We have immortalized cells at several stages along this pathway of pituitary differentiation. Here, we present analysis of differences in gene expression between an anter...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.2002.0608
更新日期：2002-04-15 00:00:00
abstract：:BMPRIA is a receptor for bone morphogenetic proteins with high affinity for BMP2 and BMP4. Mouse embryos lacking Bmpr1a fail to gastrulate, complicating studies on the requirements for BMP signaling in germ layer development. Recent work shows that BMP4 produced in extraembryonic tissues initiates gastrulation. Here w...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2004.01.048
更新日期：2004-06-01 00:00:00
abstract：:The msh/Msx family is a subclass of homeobox-containing genes suggested to perform a conserved function in the patterning of the early embryo. We had already isolated a member of this gene family (Ci-msxb) in Ciona intestinalis, which has a very complex expression pattern during embryogenesis. To identify the regulato...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2003.11.005
更新日期：2004-03-15 00:00:00
abstract：:Defects in heart development are the most common congenital abnormalities in humans, providing a strong incentive to learn more about the underlying causes. Previous studies have implicated the metalloprotease-disintegrins ADAMs (a disintegrin and metalloprotease) 17 and 19 as well as heparin binding EGF-like growth f...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2005.05.004
更新日期：2005-07-15 00:00:00
abstract：:HP1 proteins are essential components of heterochromatin and contribute to the transcriptional repression of euchromatic genes. Although most species contain more than one HP1 family member which differ in their chromosomal distribution, it is not known to what extent the activity of these different family members is ...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2006.06.039
更新日期：2006-10-01 00:00:00
abstract：:To investigate the mechanism by which the hormone 17 alpha,20 beta-dihydroxy-4-pregnen-3-one(17 alpha,20 beta-DP) acts on a receptor on the external surface of rainbow trout oocytes to induce maturation, the interaction between 17 alpha,20 beta-DP receptors and G-proteins was examined. Pertussis toxin (PT) catalyzed t...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1994.1341
更新日期：1994-12-01 00:00:00
abstract：:Prophase-arrested oocytes of Ruditapes philippinarum are triggered to undergo germinal vesicle breakdown under the influence of the neurohormone serotonin (5HT) and then arrest in metaphase 1. Our data show that these oocytes possess a single class of original 5HT receptors. Their binding parameters have been determin...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1994.1222
更新日期：1994-08-01 00:00:00
abstract：:Alveologenesis is the final step of lung maturation, which subdivides the alveolar region of the lung into smaller units called alveoli. Each of the nascent dividers serves as a new gas-exchange surface, and collectively they drastically increase the surface area for breathing. Disruption of alveologenesis results in ...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2015.11.017
更新日期：2016-01-15 00:00:00
abstract：:Adhesive extracellular matrix (ECM) molecules appear to play roles in the migration of neural crest cells, and may also provide cues for differentiation of these cells into a variety of phenotypes. We are studying the influences of specific ECM components on crest differentiation at the levels of both individual cells...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(90)90112-v
更新日期：1990-09-01 00:00:00
abstract：:Replication-dependent histone genes in the mouse and Xenopus share a common regulatory element within the protein-encoding sequence called the CRAS alpha element (coding region activating sequence alpha) which has been shown to mediate normal expression in vivo and to interact with nuclear factors in vitro in a cell c...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1996.8459
更新日期：1997-02-01 00:00:00
abstract：:Expression of cardiac troponin I (TnIcardiac) and slow skeletal troponin I (TnIslow) genes was analyzed at the mRNA and protein level in the developing rat heart. TnIslow mRNA was detectable by in situ hybridization in the embryonic cardiac tube as early as the 13-somite stage (Embryonic Day 10). In contrast, TnIcardi...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1993.1074
更新日期：1993-03-01 00:00:00
abstract：:We have used in situ hybridization and RNA blotting analysis to compare the timing of accumulation of poly(A) and alpha-subtype histone mRNA during oogenesis in the sea urchin Strongylocentrotus purpuratus. In situ hybridization with 3H-poly(U) shows that the content of poly(A) in the developing oocyte increases four-...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(84)90161-1
更新日期：1984-02-01 00:00:00
abstract：:The Smcp mRNA encoding the sperm mitochondria-associated cysteine-rich protein is translationally repressed in round spermatids and translationally active in elongated spermatids. The patterns of transcription and translation of fusions of the Smcp promoter, the green fluorescent protein coding region (Gfp) and variou...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2006.04.468
更新日期：2006-09-01 00:00:00
abstract：:Initiation of the development of the anterior-posterior axis in the mouse embryo has been thought to take place only when the anterior visceral endoderm (AVE) emerges and starts its asymmetric migration. However, expression of Lefty1, a marker of the AVE, was recently found to initiate before embryo implantation. This...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2007.06.020
更新日期：2007-09-01 00:00:00
abstract：:Heparan sulfate proteoglycans (HSPGs) regulate a number of major developmental processes, but their roles in synovial joint formation remain unknown. Here we created conditional mouse embryo mutants lacking Ext1 in developing joints by mating Ext1(f/f) and Gdf5-Cre mice. Ext1 encodes a subunit of the Ext1/Ext2 Golgi-a...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2010.12.022
更新日期：2011-03-01 00:00:00
abstract：:Tbx18 has been shown to be essential for ureteral development. However, it remains unclear whether it plays a direct role in kidney development. Here we addressed this by focusing on examining the pattern and contribution of Tbx18+ cells in the kidney and its role in kidney vascular development. Expression studies and...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2014.04.006
更新日期：2014-07-01 00:00:00
abstract：:Temporally-regulated maternal RNA translation is essential for embryonic development, with defective degradation resulting in stalled 2-cell embryos. We show that DDX1, a DEAD box protein implicated in RNA transport, may be a key regulator of maternal RNA utilization. DDX1 protein localizes exclusively to cytoplasmic ...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2019.07.014
更新日期：2019-11-15 00:00:00
abstract：:We present a genetic map for Xenopus tropicalis, consisting of 2886 Simple Sequence Length Polymorphism (SSLP) markers. Using a bioinformatics-based strategy, we identified unique SSLPs within the X. tropicalis genome. Scaffolds from X. tropicalis genome assembly 2.0 (JGI) were scanned for Simple Sequence Repeats (SSR...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2011.03.022
更新日期：2011-06-01 00:00:00
abstract：:Gene network analysis requires computationally based models which represent the functional architecture of regulatory interactions, and which provide directly testable predictions. The type of model that is useful is constrained by the particular features of developmentally active cis-regulatory systems. These systems...
journal_title：Developmental biology
pub_type： 杂志文章,评审
doi：10.1006/dbio.2002.0617
更新日期：2002-06-01 00:00:00
abstract：:The cytoplasmic factor responsible for chromosome condensation was introduced into mouse zygotes at different times after fertilization by fusion of the zygotes with metaphase I oocytes. In 72% of heterokaryons obtained after fusion of early zygotes (14-18 hr post-human chorionic gonadotrophin (HCG) with oocytes, the ...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(86)90352-0
更新日期：1986-09-01 00:00:00
abstract：:Many insects undergo katatrepsis, essential reorganization by the extraembryonic membranes that repositions the embryo. Knockdown of the zen gene by RNA interference (RNAi) prevents katatrepsis in the milkweed bug Oncopeltus fasciatus. However, the precise morphogenetic defect has been uncertain, and katatrepsis itsel...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2009.06.036
更新日期：2009-09-15 00:00:00
abstract：:The uterus undergoes a series of dramatic changes in response to an implanting conceptus that, in some mammalian species, includes differentiation of the endometrial stroma into decidual tissue. This process, called decidualization, can be induced artificially in rodents indicating that the conceptus may not be essent...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2006.03.006
更新日期：2006-06-15 00:00:00
abstract：:The corepressor SMRT acts on a range of transcription factors, including the retinoid and thyroid hormone nuclear receptors. The carboxy-terminal region of SMRT contains CoRNR box motifs that mediate these interactions. We have shown, in Xenopus, that SMRT can exist as isoforms containing either two or three CoRNR box...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2006.01.007
更新日期：2006-04-15 00:00:00
abstract：:Changes in the intracellular free calcium levels in the cortical region of cleaving Xenopus eggs were examined using semi-synthetic aequorin. We detected periodic oscillations in the free calcium levels accompanying the cleavage cycle as early as the first cleavage onward. The calcium levels began to increase at early...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1993.1325
更新日期：1993-12-01 00:00:00
