A NLRR-1 gene is expressed in migrating slow muscle cells of the trout (Oncorhynchus mykiss) embryo

Dumont, Emmanuelle; Rallière, Cécile; Tabet, Kamila Canale; Rescan, Pierre‐Yves

doi:10.1007/s00427-007-0148-1

Cited by 4 publications

(2 citation statements)

References 24 publications

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“…In trout‐developing somite, N‐cadherin expression is clearly excluded from slow muscle cells as soon as they start their migration toward the most lateral surface of the myotome. On the other hand, we have previously shown that NLRR‐1, which also encodes an immunoglobulin‐like domain containing transmembrane protein, is specifically expressed in migrating slow cells suggestive of a role for NLRR‐1 in slow cell morphogenesis in trout (Dumont et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

N‐cadherin and M‐cadherin are sequentially expressed in myoblast populations contributing to the first and second waves of myogenesis in the trout (Oncorhynchus mykiss)

Rescan¹,

Rallière²,

Lebret³

2011

J Exp Zool Pt B

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The objective of this study was to investigate the expression of two promyogenic cell surface adhesion receptors, N- and M-cadherin, in developing trout (Oncorhynchus mykiss) somite, taking account of the recent identification of a dermomyotome-like epithelium in teleosts. In situ hybridization showed that N-cadherin was expressed throughout the paraxial mesoderm and nascent somite. As the somite matured, N-cadherin expression disappeared ventrally from the sclerotome, and then mediolaterally from the differentiating slow and fast muscle cells of the embryonic myotome, to become finally restricted to the undifferentiated myogenic precursors forming the dermomyotome-like epithelium that surrounds the embryonic myotome. By contrast, M-cadherin, which was transcribed in the differentiating embryonic myotome, was never expressed in the dermomyotome-like epithelium. In late-stage trout embryos, M-cadherin transcript was only detected at the periphery of the expanding myotome, where muscle cells stemming from the N-cadherin positive dermomyotome-like epithelium differentiate. Collectively, our results support the view that, in trout embryo, N-cadherin is associated with muscle cell immaturity while M-cadherin is associated with muscle cell maturation and differentiation and this during the two successive phases of myogenesis.

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Section: Discussionmentioning

confidence: 99%

N‐cadherin and M‐cadherin are sequentially expressed in myoblast populations contributing to the first and second waves of myogenesis in the trout (Oncorhynchus mykiss)

Rescan¹,

Rallière²,

Lebret³

2011

J Exp Zool Pt B

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“…À propos des progéniteurs cellulaires du myotome embryonnaire, il est intéressant de noter des traits qui sont communs aux cellules de la lèvre dorsomédiane du dermomyotome des amniotes et aux cellules adaxiales du poisson. En effet, les cellules adaxiales comme les cellules de la lèvre dorsomédiane sont les premières à exprimer les MRF et à se différencier ; elles expriment le gène NLRR-1 (neuronal leucine-rich repeat-1) qui code une molécule transmembranaire impliquée dans l'adhérence cellulaire [20], et enfin elles sont programmées pour former des fibres musculaires dont le phénotype est essentiellement lent [21].…”

Section: Croissance Du Myotome Embryonnaire à Partir De L'épithélium unclassified

Un dermomyotome chez les poissons ?

Rescan¹

2010

Med Sci (Paris)

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Advances in research on the prenatal development of skeletal muscle in animals in relation to the quality of muscle-based food. I. Regulation of myogenesis and environmental impact

Rehfeldt

Pas

Wimmers

et al. 2011

Animal

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Skeletal muscle development in vertebrates – also termed myogenesis – is a highly integrated process. Evidence to date indicates that the processes are very similar across mammals, poultry and fish, although the timings of the various steps differ considerably. Myogenesis is regulated by the myogenic regulatory factors and consists of two to three distinct phases when different fibre populations appear. The critical times when myogenesis is prone to hormonal or environmental influences depend largely on the developmental stage. One of the main mechanisms for both genetic and environmental effects on muscle fibre development is via the direct action of the growth hormone–insulin-like growth factor (GH–IGF) axis. In mammals and poultry, postnatal growth and function of muscles relate mainly to the hypertrophy of the fibres formed during myogenesis and to their fibre-type composition in terms of metabolic and contractile properties, whereas in fish hyperplasia still plays a major role. Candidate genes that are important in skeletal muscle development, for instance, encode for IGFs and IGF-binding proteins, myosin heavy chain isoforms, troponin T, myosin light chain and others have been identified. In mammals, nutritional supply in utero affects myogenesis and the GH–IGF axis may have an indirect action through the partitioning of nutrients towards the gravid uterus. Impaired myogenesis resulting in low skeletal myofibre numbers is considered one of the main reasons for negative long-term consequences of intrauterine growth retardation. Severe undernutrition in utero due to natural variation in litter or twin-bearing species or insufficient maternal nutrient supply may impair myogenesis and adversely affect carcass quality later in terms of reduced lean and increased fat deposition in the progeny. On the other hand, increases in maternal feed intake above standard requirement seem to have no beneficial effects on the growth of the progeny with myogenesis not or only slightly affected. Initial studies on low and high maternal protein feeding are published. Although there are only a few studies, first results also reveal an influence of nutrition on skeletal muscle development in fish and poultry. Finally, environmental temperature has been identified as a critical factor for growth and development of skeletal muscle in both fish and poultry.

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A NLRR-1 gene is expressed in migrating slow muscle cells of the trout (Oncorhynchus mykiss) embryo

Cited by 4 publications

References 24 publications

N‐cadherin and M‐cadherin are sequentially expressed in myoblast populations contributing to the first and second waves of myogenesis in the trout (Oncorhynchus mykiss)

N‐cadherin and M‐cadherin are sequentially expressed in myoblast populations contributing to the first and second waves of myogenesis in the trout (Oncorhynchus mykiss)

Un dermomyotome chez les poissons ?

Advances in research on the prenatal development of skeletal muscle in animals in relation to the quality of muscle-based food. I. Regulation of myogenesis and environmental impact

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