Abstract：
:Myogenic regulatory factors (MRFs) are known to have essential roles in both the establishment and differentiation of the skeletal muscle cell lineage. MyoD is expressed early in the Xenopus mesoderm where it is present and active several hours before the activation of muscle differentiation genes. Previous studies in cultured cells and in Xenopus laevis have identified sets of genes that require MyoD prior to differentiation of skeletal muscle. Here we report results from experiments using CRISPR/Cas9 to target the MyoD gene in the diploid frog Xenopus tropicalis, that are analysed by RNA-seq at gastrula stages. We further investigate our data using cluster analysis to compare developmental expression profiles with that of MyoD and α-cardiac actin, reference genes for skeletal muscle determination and differentiation. Our findings provide an assessment of using founder (F0) Xenopus embryos from CRISPR/Cas9 protocols for transcriptomic analyses and we conclude that although targeted F0 embryos are genetically mosaic for MyoD, there is significant disruption in the expression of a specific set of genes. We discuss candidate target genes in context of their role in the sub-programs of MyoD regulated transcription.
journal_name
Mech Devjournal_title
Mechanisms of developmentauthors
McQueen C,Pownall MEdoi
10.1016/j.mod.2017.05.002subject
Has Abstractpub_date
2017-08-01 00:00:00pages
1-9eissn
0925-4773issn
1872-6356pii
S0925-4773(17)30062-Xjournal_volume
146pub_type
杂志文章abstract：:Mastermind, which is a Notch signal component, is a nuclear protein and is thought to contribute to the transactivation of target genes. Previously we showed that XMam1, Xenopus Mastermind1, was essential in the transactivation of a Notch target gene, XESR-1, and was involved in primary neurogenesis. To examine the fu...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/j.mod.2006.08.001
更新日期：2006-11-01 00:00:00
abstract：:We report the cloning and expression of a novel murine forkhead/winged helix family member--Foxn4--that is expressed during neural development in the retina, the ventral hindbrain and spinal cord and dorsal midbrain. Retinal Foxn4 expression is associated with the zone of proliferating progenitor cells. In the mouse m...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/s0925-4773(01)00465-8
更新日期：2001-09-01 00:00:00
abstract：:The homeobox gene Six4/AREC3 is a member of the vertebrate Six family of transcription factor genes. In this study we describe the cloning and expression of three zebrafish homologues of Six4/AREC3, six4.1, six4.2 and six4.3. These zebrafish Six4 proteins show high homology to the mammalian Six4/AREC3 proteins in the ...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/s0925-4773(00)00451-2
更新日期：2000-11-01 00:00:00
abstract：:The runt gene plays an important role in the genetic hierarchy that generates the segmented body pattern during the early stages of Drosophila embryogenesis. We studied mRNA expression in mutant embryos in order to investigate the regulation of runt transcription during these stages. We used sensitive whole-mount in s...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/0925-4773(93)90019-t
更新日期：1993-09-01 00:00:00
abstract：:We describe the identification and expression pattern of Xenopus frizzled 4 (Xfz4) gene during early development. Xfz4 protein presents characteristic features of a frizzled family member. The mature protein sequence of Xfz4 is 93% identical to murine Mfz4. Xfz4 is a maternal mRNA, its expression level remains constan...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/s0925-4773(00)00294-x
更新日期：2000-06-01 00:00:00
abstract：:Six/sine oculis (Six/so) class genes, with representatives in vertebrates and invertebrates, include members with key developmental roles in the anterior part of the central nervous system (CNS) and eye. Having characterized the role of the first planarian gene of the Six/so family in eye development, we attempted to ...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/s0925-4773(03)00111-4
更新日期：2002-12-01 00:00:00
abstract：:The spatial and temporal expression of seven Drosophila protein tyrosine phosphatase genes during oogenesis was examined by whole mount in-situ hybridization of antisense RNA probes to ovaries. Our observations indicate diverse expression patterns consistent with multiple roles for protein tyrosine phosphatases in the...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/0925-4773(95)00432-z
更新日期：1995-10-01 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：:Branching morphogenesis is a developmental process characteristic of many organ systems. Specifically, during renal branching morphogenesis, its been postulated that the final number of nephrons formed is one key clinical factor in the development of hypertension in adulthood. As it has been established that BMPs regu...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/j.mod.2009.02.005
更新日期：2009-05-01 00:00:00
abstract：:Cadherins are Ca(+2)-dependent cell surface proteins involved in the specification of the adhesive properties of cells. They are supposed to play a critical role in morphogenesis and pattern formation. In this paper we show that in the sea urchin embryo there are at least two different cadherins of relative molecular ...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/0925-4773(93)90054-2
更新日期：1993-04-01 00:00:00
abstract：:The cAMP signaling system has been postulated to be involved in embryogenesis of many animal species, however, little is known about its role in embryonic axis formation in vertebrates. In this study, the role of the cAMP signaling pathway in patterning the body plan of the Xenopus embryo was investigated by expressin...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/s0925-4773(99)00197-5
更新日期：1999-12-01 00:00:00
abstract：:The bHLH protein eHAND is a sensitive marker for cardiovascular precursors in the Xenopus embryo. The earliest site of expression is a broad domain within the lateral plate mesoderm of the tailbud embryo. This domain comprises precursors that contribute to the posterior cardinal veins in later stages. Surprisingly, ex...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/s0925-4773(98)00010-0
更新日期：1998-02-01 00:00:00
abstract：:Two cDNAs encoding Myb-related proteins have been cloned from Xenopus laevis and they have been termed Xmyb1 and Xmyb2. The Xmyb1 cDNA clone codes for an open reading frame of 733 amino acids and exhibits a high degree of similarity over the entire predicted protein sequence with the human B-Myb protein. Xmyb2 is a pa...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/0925-4773(92)90015-c
更新日期：1992-03-01 00:00:00
abstract：:Adhesion differences are the main driver of cell sorting and related processes such as boundary formation or tissue positioning. In the early amphibian embryo, graded variations in cadherin density and localized expression of adhesion-modulating factors are associated with regional differences in adhesive properties i...
journal_title：Mechanisms of development
pub_type： 杂志文章,评审
doi：10.1016/j.mod.2016.09.003
更新日期：2017-04-01 00:00:00
abstract：:The gene expression patterns of primordial germ cells (PGCs) and embryonic stem cells were analyzed by a modified serial analysis of gene expression. During the process, we cloned a novel gene, PGC7, which was preferentially expressed in PGCs. Immunohistochemical analysis revealed that PGC7 was specifically expressed ...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/s0925-4773(02)00002-3
更新日期：2002-04-01 00:00:00
abstract：:Three homeobox genes, one from Drosophila melanogaster (Drosophila Hmx gene) and two from mouse (murine Hmx2 and Hmx3) were isolated and the full-length cDNAs and corresponding genomic structures were characterized. The striking homeodomain similarity encoded by these three genes to previously identified genes in sea ...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/s0925-4773(00)00488-3
更新日期：2000-12-01 00:00:00
abstract：:The study of distal lung morphogenesis and vascular development would be greatly facilitated by an in vitro or ex vivo experimental model. In this study we show that the growth of mouse embryonic day 12.5 lung rudiments implanted underneath the kidney capsules of syngeneic or immunodeficient hosts follows closely lung...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/s0925-4773(02)00451-3
更新日期：2003-03-01 00:00:00
abstract：:The full length sequence of the Xenopus integrin alpha 5 subunit is reported. Analysis of cloned cDNA fragments reveals that alternative polyadenylation of alpha 5 mRNA occurs in the embryo. Furthermore, a variant form of the alpha 5 mRNA is expressed which encodes an integrin alpha 5 subunit with a truncated cytoplas...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/0925-4773(94)00335-k
更新日期：1995-04-01 00:00:00
abstract：:When an amphibian limb, cockroach leg or Drosophila imaginal disc is subjected to a surgical operation, it is capable of regenerating or duplicating certain parts. Although the structure of the regenerated tissue varies depending on the location and mass of the amputated or transplanted part, it can be predicted from ...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/0925-4773(92)90043-j
更新日期：1992-12-01 00:00:00
abstract：:The tumor-suppressor protein p53 belongs to a small gene family that includes p63 and p73. While p53 and p73 regulate cell cycle progression and apoptosis, the major role of p63 appears to be in promoting ectodermal proliferation and differentiation. In this report we describe the cloning of a Xenopus orthologue of ma...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/s0925-4773(01)00315-x
更新日期：2001-04-01 00:00:00
abstract：:extramacrochaetae (emc) functions during many developmental processes in Drosophila, such as sensory organ formation, sex determination, wing vein differentiation, regulation of eye photoreceptor differentiation, cell proliferation and development of the Malpighian tubules, trachea and muscles in the embryo. It encode...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/j.mod.2005.05.002
更新日期：2005-09-01 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：:We have isolated a new Wnt receptor frizzled family member from Xenopus laevis, Xenopus frizzled-5 (Xfz5), a likely ortholog of human frizzled-5. Based on Northern and whole-mount in situ hybridization data, Xfz5 is first detected at the late neurula stage in retinal primordia. Throughout the tailbud stage Xfz5 is exp...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/s0925-4773(01)00327-6
更新日期：2001-05-01 00:00:00
abstract：:Deflecting biomineralized crystals attached to vestibular hair cells are necessary for maintaining balance. Zebrafish (Danio rerio) are useful organisms to study these biomineralized crystals called otoliths, as many required genes are homologous to human otoconial development. We sought to identify and characterize t...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/j.mod.2019.04.001
更新日期：2019-06-01 00:00:00
abstract：:In the sea urchin embryo, Nodal is the earliest known signal to play a role in the specification of the oral ectodermal territory. Nodal, a TGF-beta ligand, is first expressed in the presumptive oral ectoderm at approximately 7 H of development. Nodal overexpression produces a distinctive bell-shaped phenotype with ex...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/j.mod.2009.01.005
更新日期：2009-05-01 00:00:00
abstract：:To analyse the possible roles of Drosophila tumour suppressor genes, 1(2)gl and 1(2)gd, in differentiation programmes of imaginal cells, we investigated their interactions with two segment polarity genes, viz., cubitus interruptus Dominant (ci-D) and engrailed (en), by examining their patterns of expression in tumouro...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/0925-4773(95)00367-3
更新日期：1995-06-01 00:00:00
abstract：:Mutations in the CFTR gene cause cystic fibrosis (CF) with myocardial dysfunction. However, it remains unknown whether CF-related heart disease is a secondary effect of pulmonary disease, or an intrinsic primary defect in the heart. Here, we used zebrafish, which lack lung tissue, to investigate the role of CFTR in ca...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/j.mod.2020.103627
更新日期：2020-09-01 00:00:00
abstract：:The growth and patterning of Drosophila wing and notum primordia depend on their subdivision into progressively smaller domains by secreted signals that emanate from localized sources termed organizers. While the mechanisms that organize the wing primordium have been studied extensively, those that organize the notum ...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/j.mod.2012.05.001
更新日期：2012-07-01 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：:The induction of sensory organ placodes, in particular the lens placode, represents the paradigm for induction. We show that medaka Sox3 is expressed in the neuroectoderm and in the placodes of all sensory organs prior to placode formation and subsequently in placode-derived tissues. Ectopic Sox3 expression leads to e...
journal_title：Mechanisms of development
pub_type： 杂志文章
doi：10.1016/s0925-4773(00)00356-7
更新日期：2000-07-01 00:00:00
