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Journal articles on the topic 'Neurectoderm'

Author: Grafiati

Published: 4 June 2021

Last updated: 20 February 2023

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1

Rathjen, Joy, Bryan P. Haines, Kathryn M. Hudson, Antonietta Nesci, Stephanie Dunn, and Peter D. Rathjen. "Directed differentiation of pluripotent cells to neural lineages: homogeneous formation and differentiation of a neurectoderm population." Development 129, no. 11 (2002): 2649–61. http://dx.doi.org/10.1242/dev.129.11.2649.

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During embryogenesis the central and peripheral nervous systems arise from a neural precursor population, neurectoderm, formed during gastrulation. We demonstrate the differentiation of mouse embryonic stem cells to neurectoderm in culture, in a manner which recapitulates embryogenesis, with the sequential and homogeneous formation of primitive ectoderm, neural plate and neural tube. Formation of neurectoderm occurs in the absence of extraembryonic endoderm or mesoderm and results in a stratified epithelium of cells with morphology, gene expression and differentiation potential consistent with

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2

Morgan, R., and M. G. Sargent. "The role in neural patterning of translation initiation factor eIF4AII; induction of neural fold genes." Development 124, no. 14 (1997): 2751–60. http://dx.doi.org/10.1242/dev.124.14.2751.

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Expression of the RNA-helicase translation initiation factor, eIF4AII, in animal cap explants of Xenopus specifically upregulates genes expressed early in the neural plate border such as Xsna, Xslu, Pax-3 and XANF and also the cement gland marker XCG-1. eIF4AII is expressed specifically in the prospective neurectoderm from stage 11.5 and appears to have a significant role in mediating early patterning of the neurectoderm. It is induced by all known neural inducing regimes including secreted factors such as noggin, follistatin and chordin, transcription factors such as XlPou-2 and constructs th

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3

Ermakova, G. V., E. M. Alexandrova, O. V. Kazanskaya, O. L. Vasiliev, M. W. Smith, and A. G. Zaraisky. "The homeobox gene, Xanf-1, can control both neural differentiation and patterning in the presumptive anterior neurectoderm of the Xenopus laevis embryo." Development 126, no. 20 (1999): 4513–23. http://dx.doi.org/10.1242/dev.126.20.4513.

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From the onset of neurectoderm differentiation, homeobox genes of the Anf class are expressed within a region corresponding to the presumptive telencephalic and rostral diencephalic primordia. Here we investigate functions of the Xenopus member of Anf, Xanf-1, in the differentiation of the anterior neurectoderm. We demonstrate that ectopic Xanf-1 can expand the neural plate at expense of adjacent non-neural ectoderm. In tadpoles, the expanded regions of the plate developed into abnormal brain outgrowths. At the same time, Xanf-1 can inhibit terminal differentiation of primary neurones. We also

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4

Lu, Pengfei, Meredith Barad, and Peter D. Vize. "Xenopus p63 expression in early ectoderm and neurectoderm." Mechanisms of Development 102, no. 1-2 (2001): 275–78. http://dx.doi.org/10.1016/s0925-4773(01)00315-x.

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5

Rhinn, M., A. Dierich, M. Le Meur, and S. Ang. "Cell autonomous and non-cell autonomous functions of Otx2 in patterning the rostral brain." Development 126, no. 19 (1999): 4295–304. http://dx.doi.org/10.1242/dev.126.19.4295.

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Previous studies have shown that the homeobox gene Otx2 is required first in the visceral endoderm for induction of forebrain and midbrain, and subsequently in the neurectoderm for its regional specification. Here, we demonstrate that Otx2 functions both cell autonomously and non-cell autonomously in neurectoderm cells of the forebrain and midbrain to regulate expression of region-specific homeobox and cell adhesion genes. Using chimeras containing both Otx2 mutant and wild-type cells in the brain, we observe a reduction or loss of expression of Rpx/Hesx1, Wnt1, R-cadherin and ephrin-A2 in mut

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6

Cruz, YP, A. Yousef, and L. Selwood. "Fate-map analysis of the epiblast of the dasyurid marsupial Sminthopsis macroura (Gould)." Reproduction, Fertility and Development 8, no. 4 (1996): 779. http://dx.doi.org/10.1071/rd9960779.

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Allocation of cells in the marsupial epiblast to embryonic and extra-embryonic domains has to date been studied only histologically. An unresolved issue in marsupial embryology has been the existence of a medullary plate. We re-examined the hypotheses that the medullary plate, or neurectoderm, arises before notochord formation and that the integumentary ectoderm is segregated from the ectoderm after the formation of the medullary plate. By marking epiblast cells in 65 Day-8 embryos of the dasyurid marsupial Sminthopsis macroura, with the lipophilic cell-surface marker, DiI, we demonstrated tha

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7

Arkell, R., and R. S. Beddington. "BMP-7 influences pattern and growth of the developing hindbrain of mouse embryos." Development 124, no. 1 (1997): 1–12. http://dx.doi.org/10.1242/dev.124.1.1.

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The expression pattern of bone morphogenetic protein-7 (BMP-7) in the hindbrain region of the headfold and early somite stage developing mouse embryo suggests a role for BMP-7 in the patterning of this part of the cranial CNS. In chick embryos it is thought that BMP-7 is one of the secreted molecules which mediates the dorsalizing influence of surface ectoderm on the neural tube, and mouse surface ectoderm has been shown to have a similar dorsalizing effect. While we confirm that BMP-7 is expressed in the surface ectoderm of mouse embryos at the appropriate time to dorsalize the neural tube, w

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8

Gamse, Joshua T., and Hazel Sive. "Early anteroposterior division of the presumptive neurectoderm in Xenopus." Mechanisms of Development 104, no. 1-2 (2001): 21–36. http://dx.doi.org/10.1016/s0925-4773(01)00358-6.

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9

Gamse, Joshua, and Hazel Sive. "Vertebrate anteroposterior patterning: the Xenopus neurectoderm as a paradigm." BioEssays 22, no. 11 (2000): 976–86. http://dx.doi.org/10.1002/1521-1878(200011)22:11<976::aid-bies4>3.0.co;2-c.

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10

Cambray, Noemí, and Valerie Wilson. "Axial progenitors with extensive potency are localised to the mouse chordoneural hinge." Development 129, no. 20 (2002): 4855–66. http://dx.doi.org/10.1242/dev.129.20.4855.

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Elongation of the mouse anteroposterior axis depends on a small population of progenitors initially located in the primitive streak and later in the tail bud. Gene expression and lineage tracing have shown that there are many features common to these progenitor tissues throughout axial elongation. However, the identity and location of the progenitors is unclear. We show by lineage tracing that the descendants of 8.5 d.p.c. node and anterior primitive streak which remain in the tail bud are located in distinct territories: (1) ventral node descendants are located in the widened posterior end of

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11

GODIN, ISABELLE, and JEAN-DANIEL GIPOULOUX. "Notochordal Catecholamines in Exogastrulated Xenopus Embryos. (catecholamines/exogastrulae/neurectoderm/notochord/xenopus)." Development, Growth and Differentiation 28, no. 2 (1986): 137–42. http://dx.doi.org/10.1111/j.1440-169x.1986.00137.x.

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12

Sadler, T. W., Keith Burridge, and J. Yonker. "A potential role for spectrin during neurulation." Development 94, no. 1 (1986): 73–82. http://dx.doi.org/10.1242/dev.94.1.73.

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An actin—myosin complex located in apical regions of the neurectoderm has been postulated to play a role in neurulation. Numerous studies have documented the presence of microfilaments in this area and confirmed their composition as actin. By necessity, if such a contractile system is to exert a force, these filaments must be anchored in some way to the cell membrane. In this study, the presence of the actin-binding protein, spectrin (fodrin), is demonstrated in the neurectoderm of neurulating mouse embryos using antispectrin antibodies and indirect immunofluorescent techniques. The patterns o

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13

Bardine, Nabila, Gerda Lamers, Stephan Wacker, Cornelia Donow, Walter Knoechel, and Antony Durston. "Vertical Signalling Involves Transmission of Hox Information from Gastrula Mesoderm to Neurectoderm." PLoS ONE 9, no. 12 (2014): e115208. http://dx.doi.org/10.1371/journal.pone.0115208.

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14

Maye, Peter, Sandy Becker, Henrike Siemen, et al. "Hedgehog signaling is required for the differentiation of ES cells into neurectoderm." Developmental Biology 265, no. 1 (2004): 276–90. http://dx.doi.org/10.1016/j.ydbio.2003.09.027.

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15

Thisse, Christine, Bernard Thisse, Marnie E. Halpern, and John H. Postlethwait. "goosecoid Expression in neurectoderm and mesendoderm is disrupted in zebrafish cyclops gastrulas." Developmental Biology 164, no. 2 (1994): 420–29. http://dx.doi.org/10.1006/dbio.1994.1212.

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16

Woo, K., and S. E. Fraser. "Order and coherence in the fate map of the zebrafish nervous system." Development 121, no. 8 (1995): 2595–609. http://dx.doi.org/10.1242/dev.121.8.2595.

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The zebrafish is an excellent vertebrate model for the study of the cellular interactions underlying the patterning and the morphogenesis of the nervous system. Here, we report regional fate maps of the zebrafish anterior nervous system at two key stages of neural development: the beginning (6 hours) and the end (10 hours) of gastrulation. Early in gastrulation, we find that the presumptive neurectoderm displays a predictable organization that reflects the future anteroposterior and dorsoventral order of the central nervous system. The precursors of the major brain subdivisions (forebrain, mid

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17

Grinblat, Y., J. Gamse, M. Patel, and H. Sive. "Determination of the zebrafish forebrain: induction and patterning." Development 125, no. 22 (1998): 4403–16. http://dx.doi.org/10.1242/dev.125.22.4403.

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We report an analysis of forebrain determination and patterning in the zebrafish Danio rerio. In order to study these events, we isolated zebrafish homologs of two neural markers, odd-paired-like (opl), which encodes a zinc finger protein, and fkh5, which encodes a forkhead domain protein. At mid-gastrula, expression of these genes defines a very early pattern in the presumptive neurectoderm, with opl later expressed in the telencephalon, and fkh5 in the diencephalon and more posterior neurectoderm. Using in vitro explant assays, we show that forebrain induction has occurred even earlier, by t

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18

Levine, Joel M., Lora Beasley, and William B. Stallcup. "Localization of a neurectoderm-associated cell surface antigen in the developing and adult rat." Developmental Brain Research 27, no. 1 (1986): 211–22. http://dx.doi.org/10.1016/0165-3806(86)90247-6.

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19

Chitnis, Ajay B., and Motoyuki Itoh. "Exploring alternative models of rostral–caudal patterning in the zebrafish neurectoderm with computer simulations." Current Opinion in Genetics & Development 14, no. 4 (2004): 415–21. http://dx.doi.org/10.1016/j.gde.2004.06.002.

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20

Grinblat, Yevgenya, and Hazel Sive. "zic Gene expression marks anteroposterior pattern in the presumptive neurectoderm of the zebrafish gastrula." Developmental Dynamics 222, no. 4 (2001): 688–93. http://dx.doi.org/10.1002/dvdy.1221.

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21

Blitz, I. L., and K. W. Cho. "Anterior neurectoderm is progressively induced during gastrulation: the role of the Xenopus homeobox gene orthodenticle." Development 121, no. 4 (1995): 993–1004. http://dx.doi.org/10.1242/dev.121.4.993.

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In order to study the regional specification of neural tissue we isolated Xotx2, a Xenopus homolog of the Drosophila orthodenticle gene. Xotx2 is initially expressed in Spemann's organizer and its expression is absent in the ectoderm of early gastrulae. As gastrulation proceeds, Xotx2 expression is induced in the overlying ectoderm and this domain of expression moves anteriorly in register with underlying anterior mesoderm throughout the remainder of gastrulation. The expression pattern of Xotx2 suggests that a wave of Xotx2 expression (marking anterior neurectoderm) travels through the ectode

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22

Varga, Máté, Shingo Maegawa, and Eric S. Weinberg. "Correct anteroposterior patterning of the zebrafish neurectoderm in the absence of the early dorsal organizer." BMC Developmental Biology 11, no. 1 (2011): 26. http://dx.doi.org/10.1186/1471-213x-11-26.

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23

Sharpe, Colin, and Kim Goldstone. "The control of Xenopus embryonic primary neurogenesis is mediated by retinoid signalling in the neurectoderm." Mechanisms of Development 91, no. 1-2 (2000): 69–80. http://dx.doi.org/10.1016/s0925-4773(99)00273-7.

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24

Miura, Shigeto, and Yuji Mishina. "The DVE changes distal epiblast fate from definitive endoderm to neurectoderm by antagonizing nodal signaling." Developmental Dynamics 236, no. 6 (2007): 1602–10. http://dx.doi.org/10.1002/dvdy.21166.

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25

Watkins, B. A., S. Hames, F. Scaravilli, L. W. Duchen, and D. G. T. Thomas. "Comparison of the anti-glioma reactivity of monoclonal antibodies to cells derived from the neurectoderm." Journal of Neuroimmunology 10, no. 2 (1985): 178. http://dx.doi.org/10.1016/0165-5728(85)90019-0.

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26

Gutknecht, D. R., C. H. Koster, L. G. Tertoolen, S. W. de Laat, and A. J. Durston. "Intracellular acidification of gastrula ectoderm is important for posterior axial development in Xenopus." Development 121, no. 6 (1995): 1911–25. http://dx.doi.org/10.1242/dev.121.6.1911.

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There is evidence suggesting that pHi elevation can induce differentiation to cement gland, an extremely anterior structure, during the early development of Xenopus laevis (Picard, J. J. (1975) J. Embryol. exp. Morphol. 33, 957–967; Sive, H. L., Hattori, K. and Weintraub, H. (1989) Cell 58, 171–180). We wanted to investigate whether axial development or neural induction are mediated in Xenopus via regulation of pHi. Our interest was stimulated further because certain signal transduction pathways, which are thought to mediate anterior neural induction (Otte, A. P., Van Run, P., Heideveld, M., V

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27

Chang, Ting, Julie Mazotta, Karin Dumstrei, Andra Dumitrescu, and Volker Hartenstein. "Dpp and Hh signaling in the Drosophila embryonic eye field." Development 128, no. 23 (2001): 4691–704. http://dx.doi.org/10.1242/dev.128.23.4691.

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We have analyzed the function of the Decapentaplegic (Dpp) and Hedgehog (Hh) signaling pathways in partitioning the dorsal head neurectoderm of the Drosophila embryo. This region, referred to as the anterior brain/eye anlage, gives rise to both the visual system and the protocerebrum. The anlage splits up into three main domains: the head midline ectoderm, protocerebral neurectoderm and visual primordium. Similar to their vertebrate counterparts, Hh and Dpp play an important role in the partitioning of the anterior brain/eye anlage. Dpp is secreted in the dorsal midline of the head. Lowering D

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Couly, G., and N. M. Le Douarin. "Head morphogenesis in embryonic avian chimeras: evidence for a segmental pattern in the ectoderm corresponding to the neuromeres." Development 108, no. 4 (1990): 543–58. http://dx.doi.org/10.1242/dev.108.4.543.

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Areas of the superficial cephalic ectoderm, including or excluding the neural fold at the same level, were surgically removed from 3-somite chick embryos and replaced by their counterparts excised from a quail embryo at the same developmental stage. Strips of ectoderm corresponding to the presumptive branchial arches were delineated, thus defining anteroposterior ‘segments’ (designated here as ‘ectomeres’) that coincided with the spatial distribution of neural crest cells arising from the adjacent levels of the neural fold. This discrete ectodermal metamerisation parallels the segmentation of

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Green, Jeremy B., Jacqueline M. Tabler, Olga M. Ossipova, Hiroaki Yamanaka, and Eleni Panousopoulou. "Control of cell and tissue polarity in neurectoderm by the PAR-1 (MARK) proteins in Xenopus." Developmental Biology 331, no. 2 (2009): 507. http://dx.doi.org/10.1016/j.ydbio.2009.05.447.

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30

Bellipanni, G. "Essential and opposing roles of zebrafish -catenins in the formation of dorsal axial structures and neurectoderm." Development 133, no. 7 (2006): 1299–309. http://dx.doi.org/10.1242/dev.02295.

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31

Thisse, Bernard, Christine Thisse, and James A. Weston. "Novel FGF receptor (Z-FGFR4) is dynamically expressed in mesoderm and neurectoderm during early zebrafish embryogenesis." Developmental Dynamics 203, no. 3 (1995): 377–91. http://dx.doi.org/10.1002/aja.1002030309.

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32

Stemple, D. L., L. Solnica-Krezel, F. Zwartkruis, et al. "Mutations affecting development of the notochord in zebrafish." Development 123, no. 1 (1996): 117–28. http://dx.doi.org/10.1242/dev.123.1.117.

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The notochord is critical for the normal development of vertebrate embryos. It serves both as the major skeletal element of the embryo and as a signaling source for the establishment of pattern within the neurectoderm, the paraxial mesoderm and other tissues. In a large-scale systematic screen of mutations affecting embryogenesis in zebrafish we identified 65 mutations that fall into 29 complementation groups, each leading to a defect in the formation and/or maintenance of the notochord. These mutations produce phenotypic abnormalities at numerous stages of notochord development, thereby estab

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33

Bee, Jim, and Don Newgreen. "Cellular and molecular aspects of cephalic neural crest development: workshop report." Development 103, Supplement (1988): 95–99. http://dx.doi.org/10.1242/dev.103.supplement.95.

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The neural crest (NC) is derived from the ectoderm at the lateral borders of the neural plate and is first distinct during the later stages of neurulation when prospective NC cells segregate from the surrounding epidermal ectoderm and neurectoderm along the entire dorsolateral aspect of the forming and newly formed neural tube. From this origin, NC cells migrate extensive distances throughout the embryo to give rise to a large number of differentiated cell types and contribute to a diverse series of organ systems. This unique cell population therefore poses fundamental questions of the mechani

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34

Hume, C. R., and J. Dodd. "Cwnt-8C: a novel Wnt gene with a potential role in primitive streak formation and hindbrain organization." Development 119, no. 4 (1993): 1147–60. http://dx.doi.org/10.1242/dev.119.4.1147.

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To begin to examine the possibility that Wnt proteins act as cell signalling molecules during chick embryogenesis, PCR was used to identify Wnt genes expressed in Hensen's node. We have identified a novel member of the Wnt gene family, Cwnt-8C, which is expressed prior to gastrulation in the posterior marginal zone, the primitive streak and Hensen's node. Injection of Cwnt-8C mRNA into Xenopus embryos caused axis duplication and dorsalization of mesodermal tissues. During neurulation, Cwnt-8C is expressed transiently in a restricted domain of the prospective hindbrain neurectoderm that will gi

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35

Saint-Jeannet, J. P., F. Foulquier, C. Goridis, and A. M. Duprat. "Expression of N-CAM precedes neural induction in Pleurodeles waltl (urodele, amphibian)." Development 106, no. 4 (1989): 675–83. http://dx.doi.org/10.1242/dev.106.4.675.

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The appearance and localization of N-CAM during neural induction were studied in Pleurodeles waltl embryos and compared with recent contradictory results reported in Xenopus laevis. A monoclonal antibody raised against mouse N-CAM was used. In the nervous system of Pleurodeles, it recognized two glycoproteins of 180 and 140×10(3) M(r) which are the Pleurodeles equivalent of N-CAM-180 and -140. Using this probe for immunohistochemistry and immunocytochemistry, we showed that N-CAM was already expressed in presumptive ectoderm at the early gastrula stage. In late gastrula embryos, a slight incre

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36

Stewart, R. M., and J. C. Gerhart. "The anterior extent of dorsal development of the Xenopus embryonic axis depends on the quantity of organizer in the late blastula." Development 109, no. 2 (1990): 363–72. http://dx.doi.org/10.1242/dev.109.2.363.

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In amphibian gastrulae, the cell population of the organizer region of the marginal zone (MZ) establishes morphogenesis and patterning within itself and within surrounding regions of the MZ, presumptive neurectoderm, and archenteron roof. We have tested the effects on pattern of reducing the amount of organizer region by recombining halves of Xenopus laevis late blastulae cut at different angles from the bilateral plane. When regions within 30 degrees of the dorsal midline are excluded from recombinants, ventralized embryos develop lacking the entire anterior-posterior sequence of dorsal struc

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37

Conlon, R. A., and J. Rossant. "Exogenous retinoic acid rapidly induces anterior ectopic expression of murine Hox-2 genes in vivo." Development 116, no. 2 (1992): 357–68. http://dx.doi.org/10.1242/dev.116.2.357.

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Exogenous retinoic acid (RA) has teratogenic effects on vertebrate embryos and alters Hox-C gene expression in vivo and in vitro. We wish to examine whether RA has a role in the normal regulation of Hox-C genes, and whether altered Hox-C gene expression in response to RA leads to abnormal morphology. The expression of 3′ Hox-2 genes (Hox-2.9, Hox-2.8, Hox-2.6 and Hox-2.1) and a 5′ gene (Hox-2.5) were examined by whole-mount in situ hybridization on embryos 4 hours after maternal administration of teratogenic doses of RA on embryonic day 7 to 9. The expression of the 3′ Hox-2 genes was found to

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38

Tzouanacou, Elena, Amélie Wegener, Valerie Wilson, and Jean-François Nicolas. "03-P017 Common progenitors for neurectoderm and mesoderm are present from gastrulation to tail bud stage in mouse." Mechanisms of Development 126 (August 2009): S72. http://dx.doi.org/10.1016/j.mod.2009.06.070.

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39

Lekven, Arne C., Christopher J. Thorpe, Joshua S. Waxman, and Randall T. Moon. "Zebrafish wnt8 Encodes Two Wnt8 Proteins on a Bicistronic Transcript and Is Required for Mesoderm and Neurectoderm Patterning." Developmental Cell 1, no. 1 (2001): 103–14. http://dx.doi.org/10.1016/s1534-5807(01)00007-7.

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Sharpe, C. R., A. Pluck, and J. B. Gurdon. "XIF3, a Xenopus peripherin gene, requires an inductive signal for enhanced expression in anterior neural tissue." Development 107, no. 4 (1989): 701–14. http://dx.doi.org/10.1242/dev.107.4.701.

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A full-length cDNA clone for the Xenopus intermediate filament gene XIF3 has been isolated. It is very similar in sequence to the rat intermediate filament cDNA clone 73 that is thought to encode the neuronal intermediate filament protein ‘peripherin’. By analysing dissected embryos, we show that XIF3 is expressed predominantly in anterior and dorsal structures and most strongly in the brain of the tailbud (stage 26) embryo. In situ hybridization shows XIF3 transcripts to be localized in neural tissue and especially in regions that most probably correspond to the motor neurones of the neural t

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41

Hentges, K., K. Thompson, and A. Peterson. "The flat-top gene is required for the expansion and regionalization of the telencephalic primordium." Development 126, no. 8 (1999): 1601–9. http://dx.doi.org/10.1242/dev.126.8.1601.

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The telencephalic vesicles form in the mouse embryo by the expansion of precursor regions in the anterior neural tube. Once the vesicles have formed, discrete dorsal and ventral territories can be recognized that later give rise to cortical and subcortical structures, respectively. To investigate the mechanisms that regulate the expansion and regionalization of the telencephalon, we have carried out a screen to identify recessive mutations that disrupt these events. We isolated a mouse mutant in which an early and critical step in development of the telencephalic vesicles is disrupted. Telence

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42

Zhang, Feng, Heike Pöpperl, Alastair Morrison, et al. "Elements both 5′ and 3′ to the murine Hoxd4 gene establish anterior borders of expression in mesoderm and neurectoderm." Mechanisms of Development 67, no. 1 (1997): 49–58. http://dx.doi.org/10.1016/s0925-4773(97)00104-4.

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Tepass, U., E. Gruszynski-DeFeo, T. A. Haag, L. Omatyar, T. Torok, and V. Hartenstein. "shotgun encodes Drosophila E-cadherin and is preferentially required during cell rearrangement in the neurectoderm and other morphogenetically active epithelia." Genes & Development 10, no. 6 (1996): 672–85. http://dx.doi.org/10.1101/gad.10.6.672.

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44

Dang, Lan TH, and Vincent Tropepe. "FGF dependent regulation of Zfhx1b gene expression promotes the formation of definitive neural stem cells in the mouse anterior neurectoderm." Neural Development 5, no. 1 (2010): 13. http://dx.doi.org/10.1186/1749-8104-5-13.

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45

Desnitskiy, Alexey G. "Surface contraction waves or cell proliferation waves in the presumptive neurectoderm during amphibian gastrulation: Mexican axolotl versus African clawed frog." Biosystems 198 (December 2020): 104286. http://dx.doi.org/10.1016/j.biosystems.2020.104286.

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46

Hartenstein, Volker, Amelia Younossi-Hartenstein, and Arne Lekven. "Delamination and Division in the Drosophila Neurectoderm: Spatiotemporal Pattern, Cytoskeletal Dynamics, and Common Control by Neurogenic and Segment Polarity Genes." Developmental Biology 165, no. 2 (1994): 480–99. http://dx.doi.org/10.1006/dbio.1994.1269.

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47

Concordet, J. P., K. E. Lewis, J. W. Moore, et al. "Spatial regulation of a zebrafish patched homologue reflects the roles of sonic hedgehog and protein kinase A in neural tube and somite patterning." Development 122, no. 9 (1996): 2835–46. http://dx.doi.org/10.1242/dev.122.9.2835.

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Signalling by members of the Hedgehog family of secreted proteins plays a central role in the development of vertebrate and invertebrate embryos. In Drosophila, transduction of the Hedgehog signal is intimately associated with the activity of protein kinase A and the product of the segment polarity gene patched. We have cloned a homologue of patched from the zebrafish Danio rerio and analysed the spatiotemporal regulation of its transcription during embryonic development in both wild-type and mutant animals. We find a striking correlation between the accumulation of patched1 transcripts and ce

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Zaraisky, A. G., V. Ecochard, O. V. Kazanskaya, S. A. Lukyanov, I. V. Fesenko, and A. M. Duprat. "The homeobox-containing gene XANF-1 may control development of the Spemann organizer." Development 121, no. 11 (1995): 3839–47. http://dx.doi.org/10.1242/dev.121.11.3839.

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At the beginning of gastrulation the homeobox-containing gene, XANF-1, is expressed at a low level throughout the animal hemisphere of Xenopus laevis embryos, with a local maximum of expression in the region of the dorsal blastopore lip. By the end of gastrulation expression ceases everywhere except in the most anterior part of the neurectoderm. We have investigated the functions of this gene by microinjecting XANF-1 mRNA in the blastomeres of the 32-cell stage embryo and have observed the following effects. First, microinjections of the mRNA in the animal blastomeres and the blastomeres of th

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Brivanlou, A. H., and R. M. Harland. "Expression of an engrailed-related protein is induced in the anterior neural ectoderm of early Xenopus embryos." Development 106, no. 3 (1989): 611–17. http://dx.doi.org/10.1242/dev.106.3.611.

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We have used a monoclonal antibody directed against the C-terminus of the Drosophila invected homeodomain to detect a nuclear protein in brain cells of Xenopus laevis embryos. We refer to this antigen as the Xenopus EN protein. The EN protein is localized at midneurula stage to a band of cells in the anterior portion of the neural plate, on each side of the neural groove. Later in development, the expression coincides with the boundary of the midbrain and hindbrain, and persists at least to the swimming tadpole stage. These properties make the EN protein an excellent molecular marker for anter

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Kress, C., R. Vogels, W. De Graaff, et al. "Hox-2.3 upstream sequences mediate lacZ expression in intermediate mesoderm derivatives of transgenic mice." Development 109, no. 4 (1990): 775–86. http://dx.doi.org/10.1242/dev.109.4.775.

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Abstract:

The mouse Hox-2.3 gene contains an Antp-like homeobox sequence and is expressed in a spatially restricted anteroposterior domain during development. To study the molecular basis of this differential gene regulation, we set out to characterize the cis-regulatory elements mediating Hox-2.3 expression during embryogenesis. We show that a fragment extending 1316 base pairs (bp) upstream of the transcription start site, thus corresponding to the Hox-2.4/Hox-2.3 intergenic sequences is capable of mediating luciferase gene transcription in transfected cells in vitro and lacZ expression in transgenic

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