A thymosin beta15-like peptide promotes intersegmental myotome extension in the chicken embryo

A thymosin beta15-like peptide promotes intersegmental myotome extension in the chicken embryo
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胸腺素β15样肽促进鸡胚胎节间肌节延伸

DOI:
10.1007/s00418-013-1156-z
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发表时间:
2014
影响因子:
2.3
通讯作者:
Brand-Saberi B
Brand-Saberi B
中科院分区:
生物学3区
文献类型:
--
作者:
Chankiewitz V;Morosan-Puopolo G;Yusuf F;Rudloff S;Pröls F;Kleff V;Hofmann DK;Brand-Saberi B

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β-胸腺素是一类小的肌动蛋白螯合肽。这些高度保守的肽参与细胞骨架动力学,并且可以影响不同的细胞特性,例如运动性、底物粘附性、形状和趋化性。作为肿瘤转移的标志物,哺乳动物胸腺素β 15被认为在癌症预后中具有重要的诊断相关性,尽管对其生理功能知之甚少。为了研究胸腺素β 15在胚胎发生中的作用,我们克隆了鸡和鹌鹑胸腺素β 15的直向同源物,并将鸡作为脊椎动物发育的模型。禽胸腺素β 15是第一个已知的非哺乳动物胸腺素β 15样基因,其编码的肽段与哺乳动物胸腺素β 15相比,在甲硫氨酸后的第一个位置上有一个半胱氨酸,禽胸腺素β 15的表达始于发育的早期。表达模式随发育迅速变化,与相关胸腺素β 4基因的表达模式不同。最突出的表达域见于发育中的四肢和躯干肌肉。功能获得实验表明胸腺素β 15鸟苷酸在正常肌节发育中具有功能。胸腺素β 15 avian的异位过度表达导致肌节细胞过早伸长越过节段边界。我们的结论是胸腺素β 15鸟苷酸在促进心肌细胞伸长方面具有尚未描述的功能。
Beta-thymosins constitute a group of small actin-sequestering peptides. These highly conserved peptides are involved in cytoskeleton dynamics and can influence different cell properties such as motility, substrate adhesion, shape and chemotaxis. As a marker for tumour metastasis, the mammalian thymosin beta15 is believed to have an important diagnostic relevance in cancer prognosis, although little is known about its physiological function. In order to study the role ofthymosin beta15avianin embryogenesis, we cloned the chicken and quail orthologues ofthymosin beta15and used the chicken as a model for vertebrate development. Avianthymosin beta15, the first known non-mammalianthymosin beta15-like gene, encodes a peptide that possesses a cysteine at position one after the methionine which is a significant difference compared to its mammalian counterparts.Thymosin beta15avianexpression starts at an early stage of development. The expression pattern changes rapidly with development and differs from that of the relatedthymosin beta4gene. The most prominent expression domain is seen in developing muscles of limbs and trunk. Gain-of-function experiments revealed that thymosin beta15avianhas a function in normal myotome development. Ectopic over-expression ofthymosin beta15avianleads to premature elongation of myotome cells trespassing segment borders. We conclude thatthymosin beta15avianhas a still undescribed function in promoting myocyte elongation.
DOI: 10.1016/j.yexcr.2003.09.022
发表时间: 2004-02-01
影响因子: 3.7
作者:
Sosne, G;Xu, LH;Kurpakus-Wheater, M
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DOI: 10.1002/dvdy.10433
发表时间: 2004-03-01
影响因子: 2.5
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发表时间: 2001-11-01
期刊: ANATOMY AND EMBRYOLOGY
影响因子: --
作者:
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通讯作者: Wilting, J
DOI: 10.1074/jbc.m707539200
发表时间: 2008-01-18
影响因子: 4.8
作者:
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通讯作者: Cierniewski, Czeslaw S.
DOI: 10.1093/dnares/3.5.311
发表时间: 1996-10-31
期刊: DNA research : an international journal for rapid publication of reports on genes and genomes
影响因子: --
作者:
Yokoyama, M;Nishi, Y;Matsubara, K
通讯作者: Matsubara, K