江西农业大学学报
江西農業大學學報
강서농업대학학보
ACTA AGRICULTURAE UNIVERSITATIS JIANGXIENSIS
2014年
3期
639-643
,共5页
姬改革%陶志云%朱春红%刘宏祥%李慧芳
姬改革%陶誌雲%硃春紅%劉宏祥%李慧芳
희개혁%도지운%주춘홍%류굉상%리혜방
鸭%胚胎期%成肌细胞%IGF-IR%mRNA表达
鴨%胚胎期%成肌細胞%IGF-IR%mRNA錶達
압%배태기%성기세포%IGF-IR%mRNA표체
duck%embryonic period%myoblast%IGF-IR%mRNA expression
类胰岛素生长因子(Insulin-like grow factor,IGFs)与动物生长发育呈强正相关,为了填补鸭胚胎期类胰岛素生长因子受体( Insulin-like growth factor-I receptors ,IGF-IR)在骨骼肌发育变化的研究空白,实验采用qRT-PCR研究生长速度差异较大的高邮鸭和金定鸭胚胎期(13、15、17、19、21和23胚龄)骨骼肌(胸肌和腿肌)成肌细胞IGF-IR基因发育性表达的差异。研究显示,成肌细胞IGF-IR mRNA在2个品种的各发育时间都表达,种间同一组织表达量变化趋势较一致,总体均呈现先升后降的趋势。胸肌中,基因表达量在17胚龄时达到最高峰,显著高于其他胚龄( P<0.05);腿肌中13胚龄与17胚龄都显著高于其他胚龄( P<0.05);品种间除了金定鸭17胚龄时胸肌IGF-IR mRNA的表达量极显著高于高邮鸭( P<0.01),其他各胚龄差异均不显著。不同肌肉组织的IGF-IR mRNA表达变化存在种间和空间差异性。不同肌肉组织成肌细胞中的IGF-IR基因表达具有显著差异,与对应组织中的表达不一致,揭示在研究转录分析时应从不同层次进行比较研究,以期获得比较系统的科学支撑。
類胰島素生長因子(Insulin-like grow factor,IGFs)與動物生長髮育呈彊正相關,為瞭填補鴨胚胎期類胰島素生長因子受體( Insulin-like growth factor-I receptors ,IGF-IR)在骨骼肌髮育變化的研究空白,實驗採用qRT-PCR研究生長速度差異較大的高郵鴨和金定鴨胚胎期(13、15、17、19、21和23胚齡)骨骼肌(胸肌和腿肌)成肌細胞IGF-IR基因髮育性錶達的差異。研究顯示,成肌細胞IGF-IR mRNA在2箇品種的各髮育時間都錶達,種間同一組織錶達量變化趨勢較一緻,總體均呈現先升後降的趨勢。胸肌中,基因錶達量在17胚齡時達到最高峰,顯著高于其他胚齡( P<0.05);腿肌中13胚齡與17胚齡都顯著高于其他胚齡( P<0.05);品種間除瞭金定鴨17胚齡時胸肌IGF-IR mRNA的錶達量極顯著高于高郵鴨( P<0.01),其他各胚齡差異均不顯著。不同肌肉組織的IGF-IR mRNA錶達變化存在種間和空間差異性。不同肌肉組織成肌細胞中的IGF-IR基因錶達具有顯著差異,與對應組織中的錶達不一緻,揭示在研究轉錄分析時應從不同層次進行比較研究,以期穫得比較繫統的科學支撐。
류이도소생장인자(Insulin-like grow factor,IGFs)여동물생장발육정강정상관,위료전보압배태기류이도소생장인자수체( Insulin-like growth factor-I receptors ,IGF-IR)재골격기발육변화적연구공백,실험채용qRT-PCR연구생장속도차이교대적고유압화금정압배태기(13、15、17、19、21화23배령)골격기(흉기화퇴기)성기세포IGF-IR기인발육성표체적차이。연구현시,성기세포IGF-IR mRNA재2개품충적각발육시간도표체,충간동일조직표체량변화추세교일치,총체균정현선승후강적추세。흉기중,기인표체량재17배령시체도최고봉,현저고우기타배령( P<0.05);퇴기중13배령여17배령도현저고우기타배령( P<0.05);품충간제료금정압17배령시흉기IGF-IR mRNA적표체량겁현저고우고유압( P<0.01),기타각배령차이균불현저。불동기육조직적IGF-IR mRNA표체변화존재충간화공간차이성。불동기육조직성기세포중적IGF-IR기인표체구유현저차이,여대응조직중적표체불일치,게시재연구전록분석시응종불동층차진행비교연구,이기획득비교계통적과학지탱。
Insulin-like growth factor has a strong positive correlation with animal growth and development . In order to fill the gap in the research on the changes of insulin-like growth factor-I receptors ( IGF-IR) dur-ing the development of the skeletal muscle of duck , the IGF-IR mRNA expressions on the skeletal myoblast during the embryonic stage of Gaoyou duck and Jinding duck i .e.on day 13,15,17,19,21 and 23 were detec-ted using quantitative RT-PCR method in this experiment .The result indicated that the profiles of duck IGF-IR gene on myoblast IGF-IR mRNA in the two duck breeds were relatively consistent during the early develop-ment.On the whole the expression level of IGF-IR gene increased first and decreased afterwards and showed an analogous curves between the varieties .The highest level of IGF-IR mRNA appeared at the 17 embryo age in pectorals and at the 13 and 17 embryo ages in leg of both the breeds ( P<0.05) .The expression levels of IGF-IR mRNA in pectorals of Jinding duck were significantly higher than that of Gaoyou duck at the 17 embryo age ( P<0.01) and others had no significant difference ( P>0.05) between varieties.Conclusion:there were differ-ences between varieties and spaces in the expression of IGF-IR mRNA in different muscle myoblast .There were significant difference between different skeletal myoblasts and inconsistent with the corresponding tissues in the expression level of IGF-IR gene.So the transcriptional analysis of gene expression should focus on differ-ent layers in order to obtain a more systematic scientific support .