scholarly journals Characterization of the cell polarity gene crumbs during the early development and maintenance of the squid–vibrio light organ symbiosis

2017 ◽  
Vol 227 (6) ◽  
pp. 375-387 ◽  
Author(s):  
Suzanne M. Peyer ◽  
Elizabeth A. C. Heath-Heckman ◽  
Margaret J. McFall-Ngai
2017 ◽  
Vol 29 (3-4) ◽  
pp. 229-244
Author(s):  
Abdul-Rahman El-Hassan ◽  
Vicki Leung ◽  
Fares Kharfallah ◽  
Marie-Claude Guyot ◽  
Redouane Allache ◽  
...  

2017 ◽  
Vol 234 (1) ◽  
pp. 106-119 ◽  
Author(s):  
D. Alessio Panzica ◽  
Amy S. Findlay ◽  
Rianne Ladesteijn ◽  
J. Martin Collinson

2014 ◽  
Vol 395 (1) ◽  
pp. 62-72 ◽  
Author(s):  
Chonnettia Jones ◽  
Dong Qian ◽  
Sun Myoung Kim ◽  
Shuangding Li ◽  
Dongdong Ren ◽  
...  

2002 ◽  
Vol 14 (5) ◽  
pp. 269-277 ◽  
Author(s):  
Giuseppe Testa ◽  
Riccardo Caccia ◽  
Francesca Tilesi ◽  
Gian Soressi ◽  
Andrea Mazzucato
Keyword(s):  

Development ◽  
1999 ◽  
Vol 126 (19) ◽  
pp. 4305-4315 ◽  
Author(s):  
Y. Cinnamon ◽  
N. Kahane ◽  
C. Kalcheim

We have previously found that the myotome is formed by a first wave of pioneer cells generated along the medial epithelial somite and a second wave emanating from the dorsomedial lip (DML), rostral and caudal edges of the dermomyotome (Kahane, N., Cinnamon, Y. and Kalcheim, C. (1998a) Mech. Dev. 74, 59–73; Kahane, N., Cinnamon, Y. and Kalcheim, C. (1998b) Development 125, 4259–4271). In this study, we have addressed the development and precise fate of the ventrolateral lip (VLL) in non-limb regions of the axis. To this end, fluorescent vital dyes were iontophoretically injected in the center of the VLL and the translocation of labeled cells was followed by confocal microscopy. VLL-derived cells colonized the ventrolateral portion of the myotome. This occurred following an early longitudinal cell translocation along the medial boundary until reaching the rostral or caudal dermomyotome lips from which fibers emerged into the myotome. Thus, the behavior of VLL cells parallels that of their DML counterparts which colonize the opposite, dorsomedial portion of the myotome. To precisely understand the way the myotome expands, we addressed the early generation of hypaxial intercostal muscles. We found that intercostal muscles were formed by VLL-derived fibers that intermingled with fibers emerging from the ventrolateral aspect of both rostral and caudal edges of the dermomyotome. Notably, hypaxial intercostal muscles also contained pioneer myofibers (first wave) showing for the first time that lateral myotome-derived muscles contain a fundamental component of fibers generated in the medial domain of the somite. In addition, we show that during myotome growth and evolution into muscle, second-wave myofibers progressively intercalate between the pioneer fibers, suggesting a constant mode of myotomal expansion in its dorsomedial to ventrolateral extent. This further suggests that specific hypaxial muscles develop following a consistent ventral expansion of a ‘compound myotome’ into the somatopleure.


2009 ◽  
Vol 7 (44) ◽  
pp. 549-560 ◽  
Author(s):  
Michi Izumi ◽  
Alison M. Sweeney ◽  
Daniel DeMartini ◽  
James C. Weaver ◽  
Meghan L. Powers ◽  
...  

Many cephalopods exhibit remarkable dermal iridescence, a component of their complex, dynamic camouflage and communication. In the species Euprymna scolopes , the light-organ iridescence is static and is due to reflectin protein-based platelets assembled into lamellar thin-film reflectors called iridosomes, contained within iridescent cells called iridocytes. Squid in the family Loliginidae appear to be unique in which the dermis possesses a dynamic iridescent component with reflective, coloured structures that are assembled and disassembled under the control of the muscarinic cholinergic system and the associated neurotransmitter acetylcholine (ACh). Here we present the sequences and characterization of three new members of the reflectin family associated with the dynamically changeable iridescence in Loligo and not found in static Euprymna iridophores. In addition, we show that application of genistein, a protein tyrosine kinase inhibitor, suppresses ACh- and calcium-induced iridescence in Loligo . We further demonstrate that two of these novel reflectins are extensively phosphorylated in concert with the activation of iridescence by exogenous ACh. This phosphorylation and the correlated iridescence can be blocked with genistein. Our results suggest that tyrosine phosphorylation of reflectin proteins is involved in the regulation of dynamic iridescence in Loligo .


1997 ◽  
Vol 1 (2) ◽  
pp. 198-226 ◽  
Author(s):  
Philip David Zelazo ◽  
Alice Carter ◽  
J. Steven Reznick ◽  
Douglas Frye

Executive function (EF) accounts have now been offered for several disorders with childhood onset (e.g., attention-deficit/hyperactivity disorder, autism, early-treated phenylketonuria), and EF has been linked to the development of numerous abilities (e.g., attention, rule use, theory of mind). However, efforts to explain behavior in terms of EF have been hampered by an inadequate characterization of EF itself. What is the function that is accomplished by EF? The present analysis attempts to ground the construct of EF in an account of problem solving and thereby to integrate temporally and functionally distinct aspects of EF within a coherent framework. According to this problem-solving framework, EF is a macroconstruct that spans 4 phases of problem solving (representation, planning, execution, and evaluation). When analyzed into subfunctions, macroconstructs such as EF permit the integration of findings from disparate content domains, which are often studied in isolation from the broader context of reasoning and action. A review of the literature on the early development of EF reveals converging evidence for domain-general changes in all aspects of EF.


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