CN111621522A - 一种培育肠道特异性表达红色荧光转基因斑马鱼的方法 - Google Patents
一种培育肠道特异性表达红色荧光转基因斑马鱼的方法 Download PDFInfo
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Abstract
本发明涉及转基因斑马鱼的培育方法,旨在提供一种培育肠道特异性表达红色荧光转基因斑马鱼的方法。通过观察胚胎红色荧光蛋白基因的表达情况,挑选出肠道有特异性荧光的斑马鱼胚胎,以采用人工饲养方法获得杂交子代。通过杂交子代自交获得稳定遗传的肠道表达红色荧光蛋白斑马鱼,再将其与野生型斑马鱼测交,筛出100%肠道表达红色荧光蛋白胚胎对应的亲本斑马鱼作为双整合纯系留种保存。本发明方法实施过程简单易控,能够获得肠道特异性表达的启动子和红色荧光蛋白在肠道高效表达的斑马鱼品系;所得斑马鱼品系用于斑马鱼肠道功能的研究,可以随时观察在任何时期的肠道红色荧光蛋白表达特征,满足对斑马鱼肠道功能研究的整体性与完整性要求。
Description
技术领域
本发明涉及转基因斑马鱼的培育方法,特别是涉及一种获得肠道表达红色荧光蛋白斑马鱼的培育方法,和一个用于该培育方法的专用启动子。
背景技术
斑马鱼(Denio Rerio)为鲤科短担尼尔属,饲养简易且繁殖能力较强,鱼卵在体外受精并发育,受精卵发育迅速,胚胎时期各器官原基基本形成,生长周期短,可以进行大规模的基因突变与筛选,且斑马鱼胚胎通体透明,可利用光学仪器对体内生理过程进行可视化分析,这些特点使其成为重要的脊椎动物模型之一。
迄今为止,斑马鱼仅有少数消化道特异性表达的启动子被发现,其中包括ifabp基因的启动子。斑马鱼ifabp基因编码肠道脂肪酸结合蛋白,在斑马鱼肠道上皮细胞中特异性表达。斑马鱼ifabp基因长度为3295bp,其启动子位于该基因上游192-5000bp,在胚胎发育时期即可发挥作用。Guor Mour Her等验证了该基因的启动子可驱动绿色荧光蛋白在斑马鱼胚胎肠道中短暂表达,并获得了稳定肠道表达绿色荧光蛋白GFP及红色荧光蛋白RFP的转基因斑马鱼。
DsRed基因编码的蛋白质(以下简称DsRed)由225个氨基酸组成,相对分子质量27.6kDa,激发光554nm,荧光波长586nm。与其他荧光蛋白如GFP和RFP等相比,DsRed的激发和发射波长较长,其发射峰位于培养基、组织培养器材及细胞成分等产生的荧光背景范围之外,具有较高的信噪比,而且在细胞内荧光转换效率高,更易检测。DsRed对pH值不敏感,pH值为4.5~12时仍保持稳定,这使其使用范围更加广泛。但目前尚无可在肠道稳定表达Dsred红色荧光蛋白的转基因斑马鱼品系。
斑马鱼胚胎发育过程中,肠道发育位置与卵黄十分接近,转基因斑马鱼的肠道特异性荧光极易被卵黄强烈的自发荧光所影响,因而在转基因斑马鱼的培育过程中降低了筛选与育种的效率。构建肠道稳定表达Dsred红色荧光蛋白的转基因斑马鱼品系,能够使肠道特异性荧光的更易检测与观察,能够在培育过程中,获得较高的筛选效率和荧光蛋白表达效率。因此,培育肠道特异性表达红色荧光转基因斑马鱼由其现实需要。
发明内容
本发明要解决的技术问题是,克服现有技术中的不足,提供一种培育肠道特异性表达红色荧光转基因斑马鱼的方法。
为解决技术问题,本发明的解决方案是:
提供一种培育肠道特异性表达红色荧光转基因斑马鱼的方法,是以Tol2转座酶系统为工具,构建以肠道脂肪酸结合蛋白启动子带动DsRed红色荧光蛋白在肠道特异表达的转基因斑马鱼;该方法具体包括以下步骤:
(1)从斑马鱼肠道组织基因组扩增获得肠道特异性启动子Pifabp,其序列如SEQID NO:1所示;
(2)从商品化质粒中扩增获得dsred片段,其序列如SEQ ID NO:2所示;
(3)以mini Tol2质粒为骨架,构建基于肠道特异性启动子Pifabp表达红色荧光蛋白dsred的重组表达载体;
(4)将步骤(3)中的重组表达载体显微注射至斑马鱼受精卵,筛选出存在红色荧光信号的胚胎,并按常规方法饲养,得到F0代;
(5)将F0代斑马鱼与野生型斑马鱼杂交获得F1代,筛选获得杂合的肠道特异性表达红色荧光转基因斑马鱼;
(6)将F1代斑马鱼进行自交获得F2代,筛选得到纯合及杂合的肠道特异性表达红色荧光转基因斑马鱼;
(7)将F2代斑马鱼与野生型斑马鱼测交,筛选出后代100%肠道表达红色荧光蛋白对应的F2代亲本斑马鱼,作为纯品系留种保存。
本发明中,所述步骤(1)中,启动子Pifabp的扩增过程包括:
(1.1)从成年斑马鱼的肠道组织中获取基因组DNA;
(1.2)设计并合成巢式PCR引物,其序列如SEQ ID NO:3-SEQ ID NO:6所示;
(1.3)以步骤(1.1)中提取的斑马鱼基因组为模板,利用步骤(1.2)所述引物进行两轮巢式PCR扩增,PCR产物经分离鉴定后进行回收纯化。
本发明中,所述步骤(2)中,dsred片段的扩增过程包括:
(2.1)根据dsred商品化质粒的图谱,设计并合成特异性引物,其序列如SEQ IDNO:7-SEQ ID NO:8所示;在所述引物上加悬挂序列,用于与ifabp启动子及pTol2质粒融合;
(2.2)以dsred商品化质粒为模板,利用步骤(2.1)所述引物进行PCR扩增,PCR产物经分离鉴定后进行回收纯化。
本发明中,所述步骤(3)中,构建重组表达载体的过程包括:
(3.1)以纯化的启动子Pifabp和dsred片段为模板进行融合PCR,PCR产物经分离鉴定后进行回收纯化;
(3.2)根据miniTol2质粒图谱,设计并合成特异性引物,其序列如SEQ ID NO:9-SEQ ID NO:10所示;在所述引物上加悬挂序列,用于PCR扩增获得用于克隆的线性化质粒;
(3.3)以miniTol2质粒为模板,利用步骤(3.2)所述引物进行PCR扩增,获得用于克隆的线性化质粒,PCR产物经分离鉴定后进行回收纯化;纯化产物用DpnI酶切,去除质粒模板,并将酶切产物纯化回收;
(3.4)利用步骤(3.1)所得Pifabp-dsred融合片段和步骤(3.3)所得线性化质粒进行一步克隆,然后将克隆质粒转化入大肠杆菌DH5α感受态中;
(3.5)挑取单菌落进行培养,以Pifabp-dsred融合片段为阳性对照,取菌液进行PCR鉴定;对PCR产物鉴定为阳性克隆的进行测序比对,保存测序完全正确的阳性克隆对应的菌液。
本发明中,所述步骤(4)中,在斑马鱼受精卵产下后1小时内,将步骤(3)获得的重组表达载体通过显微注射导入斑马鱼单细胞阶段受精卵中;按常规方法饲养,将其定为F0代;
本发明中,所述步骤(5)中,待F0代发育至性成熟后,将其与WB野生型斑马鱼进行测交;获取3dpf及5dpf的胚胎,观察并筛选肠道中有红色荧光特异性表达的胚胎;按常规方法饲养,并将其定为F1代。
本发明中,所述步骤(6)中,待F1代发育至性成熟后进行自交;获取3dpf及5dpf的胚胎,观察并筛选出肠道红色荧光特异性表达的胚胎;按常规方法饲养3-4个月至性成熟,与WB野生型斑马鱼进行测交,筛选出后代100%胚胎有荧光信号的定为F2代纯合子,作为纯品系留种保存。
本发明进一步提供了用于培育肠道特异性表达红色荧光转基因斑马鱼的专用质粒,是以mini Tol2质粒为骨架,包含肠道特异性表达启动子Pifabp及红色荧光蛋白dsred序列,还含有Poly A序列及Tol2转座酶序列;该质粒的序列如SEQ ID NO:11所示。
与现有技术相比,本发明的有益效果是:
(1)本发明方法实施过程简单易控,能够获得肠道特异性表达的启动子和红色荧光蛋白在肠道高效表达的斑马鱼品系;
(2)所得斑马鱼品系用于斑马鱼肠道功能的研究,利用红色荧光蛋白在活体鱼中的表达可以随时观察在任何时期的肠道红色荧光蛋白表达特征。使用该方法获得的转基因斑马鱼品系可用于斑马鱼肠道发育机制、食源性病原菌通过消化道感染的致病机制及肠道微生物菌群作用等研究,可以满足对斑马鱼肠道功能研究的整体性与完整性要求。
附图说明
图1为肠道特异性启动子Pifabp(4500bp)、红色荧光蛋白基因dsred(744bp)及二者融合片段(5244bp)扩增的电泳验证结果。
图2为肠道特异性启动子Pifabp活性验证结果。将Tol2-Pifabp-dsred注射至斑马鱼受精卵中,取胚胎进行dsred基因PCR鉴定,1#-8#为待检胚胎,9#为阴性对照,10#为阳性对照。电泳图中可见,5#、6#和8#胚胎中,dsred基因表达较低或不表达,其余胚胎成功表达dsred基因。
图3为F0代幼鱼dsred表达情况。图中可见Pifabp启动子驱动下,3dpf鱼中dsred表达在卵黄囊部位,5dpf鱼中,dsred在肠道特异性表达。
图4为F1代幼鱼dsred表达情况。图中可见,5dpf幼鱼及8dpf幼鱼dsred均可在肠道前、中、后段表达。
图5为F2代幼鱼dsred表达情况。图中可见,5dpf幼鱼及8dpf幼鱼dsred均可在全肠道中高效表达。
图6为转基因斑马鱼幼鱼肠道冰冻切片红色荧光蛋白表达情况。红色荧光通道中可见荧光蛋白表达,且表达部位与明场中肠道细胞位置一致。
图7为本发明中转基因斑马鱼与巨噬细胞表达绿色荧光蛋白品系斑马鱼杂交后荧光表达情况。如在彩色图片中,可见杂交所获幼鱼全身巨噬细胞表达绿色荧光,且肠道表达红色荧光。
图8为表达GFP的单增李斯特菌感染本发明中转基因斑马鱼幼鱼。如在彩色图片中,可见绿色荧光通道中的细菌分布位置位于与红色荧光通道中肠道的位置。
具体实施方式
本发明根据常规的杂交育种操作方法,依照杂交亲本选育、配组繁殖、杂交性状筛选、杂交子代培育、杂交性状固定几个步骤加以实施。在亲本选育中,挑选具有良好红色荧光蛋白表达性状的斑马鱼作为亲本斑马鱼,培养至性成熟。在配组繁殖中,采用常规配组繁殖方法获得斑马鱼受精卵。在杂交性状筛选中,在体式荧光显微镜下观察胚胎红色荧光蛋白基因的表达情况,挑选出肠道有特异性荧光的斑马鱼胚胎,采取进一步的杂交子代培育。在杂交子代培育中,采用人工饲养方法获得杂交子代。在杂交性状固定与保留中,通过杂交子代自交获得稳定遗传的肠道表达红色荧光蛋白斑马鱼,再将其与野生型斑马鱼测交,筛出100%肠道表达红色荧光蛋白胚胎对应的亲本斑马鱼作为双整合纯系留种保存。
具体实施例如下:
一、从斑马鱼肠道组织基因组中扩增获得Pifabp启动子
1、斑马鱼基因组获取
(1)取刚刚死亡的成年斑马鱼1尾,利用手术器械解剖获取肠道组织,并剪碎放入研钵,倒入液氮研磨;
(2)加入1mL PBS混匀转移至1.5mL EP管中;
(3)加入100μL 10%SDS和5mg蛋白酶K,37℃孵育1小时;
(4)12000rpm离心1min后将上清转移至新的1.5mL EP管中,加入等体积酚:氯仿(1:1)静置5min;
(5)12000rpm离心10min,将上清转移至新的1.5mL EP管中,加入两倍体积的冰上预冷的75%的乙醇和3M醋酸钠(9:1)混合液,冰上放置5min,待沉淀析出;
(6)12000rpm 4℃离心10min,加入1mL预冷的75%的乙醇洗涤沉淀,此步骤重复两次;
(7)12000rpm 4℃离心10min弃上清,室温干燥30min;
(8)加入100μL双蒸水溶解沉淀,-20℃保存基因组DNA。
2、ifabp启动子扩增
(1)利用Vector NTI软件,设计巢式PCR引物,并由北京擎科生物科技有限公司进行合成。使用引物序列如SEQ ID NO:3-SEQ ID NO:6所示;
(2)以提取的斑马鱼基因组为模板,进行巢式PCR第一轮扩增,反应体系如下:基因组DNA 2μL,引物(SEQ ID NO:3&4,10mM)各2.5μL,KOD Plus-Neo 25μL,ddH2O 18μL。反应条件如下:94℃预变性3min,98℃变性5min、55℃退火30s、72℃延伸3min共循环25次,72℃最后延伸10min;第一轮PCR产物利用DNA回收试剂盒进行回收;
(3)以第一轮PCR回收产物为模板,进行巢式PCR第二轮扩增,反应体系如下:第一轮PCR回收产物2μL,引物(SEQ ID NO:5&6,10mM)各2.5μL,KOD Plus-Neo25μL,ddH2O 18μL。反应条件如下:94℃预变性3min,98℃变性5min、55℃退火30s、72℃延伸3min共循环30次,72℃最后延伸10min;
(4)第二轮PCR产物利用1%琼脂糖凝胶进行分离鉴定,获得4500bp大小条带,并用割胶回收试剂盒进行回收纯化;
(5)纯化产物在-20℃保存。
二、从包含dsred荧光蛋白基因的商品化质粒中扩增获得dsred片段
1.Dsred片段扩增
(1)dsred商品化质粒购自武汉淼灵生物科技有限公司,根据该质粒图谱,利用Vector NTI软件设计特异性引物,并在引物上加悬挂序列,以便与ifabp启动子及pTol2质粒融合,引物序列如SEQ ID NO:7-SEQ ID NO:8所示;
SEQ ID NO 7:acagtctgtc atcatcatgg cctcctccga ggacgt
SEQ ID NO 8:atctagatcc ggtggatccc tagactcgag cggccgcc
上述两个引物序列中包含了悬挂序列,分别以下划线示出。
(2)以dsred商品化质粒为模板,进行PCR扩增,反应体系如下:质粒2μL,引物(SEQID NO:7&8,10mM)各2.5μL,KOD Plus-Neo 25μL,ddH2O 18μL。反应条件如下:94℃预变性3min,98℃变性5min、55℃退火30s、72℃延伸30s共循环30次,72℃最后延伸10min;
(3)PCR产物利用1%琼脂糖凝胶进行分离鉴定,获得约750bp大小条带,并用割胶回收试剂盒进行回收纯化;
(4)纯化产物在-20℃保存。
三、构建基于肠道特异性启动子Pifabp表达红色荧光蛋白dsred的重组表达载体的操作内容;
1.Pifabp-dsred融合片段获得
(1)以纯化的Pifabp和dsred片段为模板,进行融合PCR,反应体系如下:纯化片段各1μL,引物(SEQ ID NO:5&8,10mM)各2.5μL,KOD Plus-Neo 25μL,ddH2O 18μL。反应条件如下:94℃预变性3min,98℃变性5min、55℃退火30s、72℃延伸30s共循环30次,72℃最后延伸10min;
(2)PCR产物利用1%琼脂糖凝胶进行分离鉴定,获得约5300bp大小条带,并用割胶回收试剂盒进行回收纯化;
(3)纯化产物在-20℃保存。
2.重组质粒构建
(1)根据miniTol2质粒图谱,利用Vector NTI软件设计特异性引物,并在引物上加悬挂序列,用于PCR扩增获得可用于一步克隆的线性化质粒,引物序列如SEQ ID NO:9-SEQID NO:10所示;
SEQ ID NO 9:ggatccaccg gatctagata actgatcata at
SEQ ID NO 10:gttgaaagag aagcttaaac aagaatctct agttttcttt cttgc
上述两个引物序列中,SEQ ID NO:9不需要悬挂序列,在SEQ ID NO:10中以下划线示出了悬挂序列。
(2)以miniTol2质粒为模板,PCR扩增获得可用于一步克隆的线性化质粒,反应体系如下:纯化片段各1μL,引物(SEQ ID NO:9&10,10mM)各2.5μL,KOD Plus-Neo 25μL,ddH2O18μL。反应条件如下:94℃预变性3min,98℃变性5min、55℃退火30s、72℃延伸30s共循环30次,72℃最后延伸10min;
(3)PCR产物利用1%琼脂糖凝胶进行分离鉴定,获得约4700bp大小条带,并用割胶回收试剂盒进行回收纯化;
(4)将纯化产物用DpnI酶切,去除质粒模板,并将酶切产物纯化回收;
(5)将线性化质粒与Pifabp-dsred融合片段利用ClonExpress MultiS One StepCloning Kit试剂盒(南京诺唯赞生物科技有限公司)进行一步克隆,具体方法如下,1.5mLEP管中加入线性化质粒100ng,片段200ng,加ddH2O补齐体积至10μL,室温放置1h;
(6)将克隆质粒转化入大肠杆菌DH5α感受态中,具体步骤如下:取大肠杆菌DH5α感受态100μL,加入至一步克隆产物中,冰浴30min,42℃热激90s,再迅速放置冰上3min,加入1mL LB培养基,至摇床37℃振荡培养45min,4000rpm离心5min,弃去850μL培养基,用余下的150μL重悬菌体,并涂布于含有羧苄青霉素10μg/mL的LB固体培养基上,37℃静置培养过夜;
3.重组质粒鉴定及保存
(1)挑取单菌落至含有羧苄青霉素10μg/mL的LB液体培养基中,37℃振荡培养过夜;
(2)在超净工作台中每管取5μL菌液,进行PCR鉴定,反应体系如下:菌液5μL,引物(SEQ ID NO:7&8,10mM)各2.5μL,PCR Mix 15μL,ddH2O 5μL。反应条件如下:94℃预变性3min,98℃变性5min、55℃退火30s、72℃延伸30s共循环30次,72℃最后延伸10min;以Pifabp-dsred融合片段为阳性对照;
(3)PCR产物利用1%琼脂糖凝胶进行分离鉴定,与阳性对照一样获得约750bp大小条带的鉴定为阳性克隆,将阳性克隆送北京擎科生物科技有限公司进行测序比对,将测序完全正确的阳性克隆对应菌液用含20%甘油的LB培养基保存于-80℃。
四、培育肠道特异性表达红色荧光转基因斑马鱼
1.Tol2系统显微注射斑马鱼胚胎
(1)体外转录获取Tol2转座酶mRNA,具体步骤如下:用NotI内切酶将pCS-TP重组质粒酶切过夜,并回收得到纯化的pCS-TP线性化质粒,以该线性化质粒为模板,加入Sp6 RNA聚合酶在体外转录获得Tol2转座酶mRNA,经纯化回收后测定浓度,保存于-80℃;
(2)利用生工生物工程(上海)股份有限公司的质粒抽提试剂盒,提取pTol2-Pifabp-dsred质粒,并做去除内毒素处理,测定浓度,保存于-20℃;
(3)选取发育正常的野生型斑马鱼若干对,放入交配缸,换新鲜水刺激,次日抽掉隔板获取单细胞期胚胎,用egg water清洗胚胎数次后待用;
(4)将Tol2转座酶mRNA和pTol2-Pifabp-dsred质粒按比例混合,并加入酚红指示剂。具体注射体系如下:质粒10ng,mRNA 0.5μL,指示剂2μL,DEPC水补齐至10μL,每个受精卵注射1nL。
(5)在斑马鱼受精卵产下后1小时内,选取正常发育的斑马鱼单细胞期胚胎,置于琼脂糖凝胶注射板上并摆放整齐,利用显微注射仪向每个胚胎细胞中注射1nL注射混合液,注射完成后将斑马鱼胚胎放入28℃恒温培养箱孵化;
2.转基因斑马鱼筛选及功能鉴定
(1)显微注射后,取3dpf及5dpf的斑马鱼胚胎,在荧光体视显微镜下观察,并筛选出存在红色荧光信号的胚胎,并按常规方法饲养待用,并将其定为F0代;
(2)待F0代发育3-4个月至性成熟后,将其与WB野生型斑马鱼进行测交,获取斑马鱼胚胎,取3dpf及5dpf的斑马鱼胚胎,在荧光体视显微镜下观察,并筛选出存在红色荧光信号的胚胎,并按常规方法饲养待用,并将其定为F1代;
(3)待F1代发育3-4个月至性成熟后,将其进行自交,获得斑马鱼胚胎,取3dpf及5dpf的斑马鱼胚胎,在荧光体视显微镜下观察,并筛选出存在红色荧光信号的胚胎;按常规方法饲养3-4个月至性成熟,并与WB野生型斑马鱼进行测交,将后代全部胚胎有荧光信号的定为F2代纯合子,将后代部分胚胎有荧光信号的定为F2代杂合子。
五、本发明所获转基因斑马鱼的实际效果验证
转基因斑马鱼幼鱼可用MS-222麻醉后放置在细胞培养皿上。利用荧光体式显微镜,在5倍镜下用明场观察找到肠道所在位置,并切换至红色荧光通道,鉴定转基因斑马鱼肠道红色荧光蛋白表达效果。
转基因斑马鱼成鱼可解剖获取肠道,加入4%多聚甲醛固定,用冰冻切片包埋剂包埋,制作肠道冰冻切片后利用荧光显微镜观察鉴定肠道荧光蛋白表达效果。
六、本发明所获转基因斑马鱼的用途和具体使用方法示例。
1、转基因斑马鱼肠道切片荧光检测
取5dpf的转基因斑马鱼经4%多聚甲醛室温固定过夜,用PBS洗去多聚甲醛,将鱼转移至1.5mL EP管盖上,吸去多余水分;加入预热好的低熔点琼脂(含5%蔗糖),在体视显微镜下调整斑马鱼的位置,在垂直鱼尾向下的情况下让琼脂凝固进行包埋,将包埋块用镊子小心取出,并用手术刀片修整成立方体小块;将小块放入5%蔗糖溶液中脱水过夜;将小块放入冰冻切片包埋模具(Leica),鱼尾朝上,加O.C.T.包埋剂,将模具放入-80℃预冷的无水乙醇中使包埋剂迅速凝固,用镊子小心取出,放入50mL离心管中,置于干冰上待切片或置于-80℃保存;用Shandon Cryotome FE冰冻切片仪对全鱼进行连续切片,并利用荧光显微镜对肠道荧光表达进行观察。
2、与巨噬细胞表达绿色荧光的转基因斑马鱼品系杂交
选取巨噬细胞表达绿色荧光的转基因斑马鱼品系Tg(Lyz:GFP)公鱼若干,分别和本发明中的转基因鱼品系Tg(ifabp:dsred)母鱼进行杂交,收获鱼卵,孵化后5天观察荧光表达,可获得同时表达巨噬细胞绿色荧光和肠上皮细胞红色荧光的斑马鱼。
3、肠道感染GFP标记细菌
单增李斯特菌为消化道感染的食源性致病,过夜培养表达GFP的单增李斯特菌EGDe-GFP,细菌培养液经离心(1500×g,4℃,5min)后弃上清,用无菌egg water重悬后再次离心弃上清,用无菌egg water调菌液OD600nm至0.2左右(约108CFU/mL)。取5dpf本发明中的转基因斑马鱼幼鱼,用一次性吸管转移至96孔板中,每孔一条。用移液器将孔内无菌eggwater吸干,每孔分别加入100μL细菌液(菌液浓度为108CFU/mL),浸泡24h后弃去菌液,用无菌egg water冲洗三遍,观察斑马鱼体内细菌感染情况。
序列表
<110> 浙江大学
<120> 一种培育肠道特异性表达红色荧光转基因斑马鱼的方法
<160> 11
<170> SIPOSequenceListing 1.0
<210> 1
<211> 4500
<212> DNA
<213> 斑马鱼(Danio rerio)
<400> 1
ctctttcaac aattgcaaaa agagactgaa agggcagaag cacaggttca tctggtagag 60
gaacaactga ccttgaccaa actgcagcaa accaagacca atgacttgag atctgcctcc 120
taaagactac gctcagacaa gctgctctct ccacatcaga tgaggaagtc tgaacttatt 180
gtggagtttt tgacattaag tctttttatt atttacatct ttttattatt gaaacttatt 240
ataaatatcc tcaatctaca gtgttgtagg tctcagatga gcggactgct ggaagaggat 300
ggggtgttgt ttttcttgtt tttattatta tttattatta ttattatttt aattattata 360
attttttttc ttagttttca tttcaaataa aaataaagtt atattgaccc catgctattc 420
tactctttac atatctatag ttctacattg tgatgtccta tgctgtttga gcactggtta 480
tccagattta gtgatcctga aaagttccta tccagatcag attgatccaa tccgaagttg 540
ctttgaaaaa ctggctcaaa aaatgagctg gattacgtga tcacggatcg caaaaacagg 600
attactaaat ctggatcaat tttatccgga ttaaaccttt tgaaaaaccg ggcccaggtt 660
gttaatgttg ttatccactc tgcagatctc tccagattta aaaaatttaa tggtgaagat 720
tatgaagatg cgcagtgggt agcatgattg cctcacagca agaaggtcac tgtttgagcc 780
tcggctgggt cagttggcat ttctgtgtag agtttgcatg ttctccctgg gttgtcgtgg 840
gttgcctctg gatgctctgg tttatcccag aagttcaaag acatgcgctg taggtgaatt 900
gggtaagcta aaaatgtctg ttgtgaatgt gtgtgggaga ttcccagtga tggattgcag 960
ctggaagggc atgcactgcg taaaacattg gcggttcatt ccgctctggc gaccccatta 1020
attaacggac taagccgaaa agaaaatgaa tgaatgaatg attataaaga tgaagtgttt 1080
ataaatagtt agcattttgt gatctccact gtattgtttt gaaagttact tcaggacatt 1140
cttcatctat cactgtcgat agtcagtggt aagatggtgt aggtgtagat agaggtaaaa 1200
actctgtttt tttttttttt ttcatattta gaacagtaaa tcagatctgt atcgttgtct 1260
tgatcatgat tggtgtgtag gcacctttat ttaaaaaaaa atgctggctt tacagccaga 1320
ctttaataac ccctaaagca atagcctact acttgtacat gactggaatc actccagcca 1380
aacttgacca gcctgatatt actgcaaata cctccgtctt gtggtacaaa taagtaagta 1440
cattctttta aaaatagctc tgaagtgttg caatgaaaac caatggctaa aatcgttctg 1500
aagcactatg accccaatat tttcaatatt tccacttcca cagagaagta gataatagat 1560
agttagttaa tcattgcctt ttaatagtta atcattacct tctgaacaaa ttgtgctagc 1620
agttactact cctctgtagt aaaatacata accatgccaa gcgcataagg caattgatta 1680
tgtaagatta aagcatcata aaaacaaatt gttttggatt gtgtctaaac tctgagtaca 1740
tcagagaact gtttatttcc cagtgatagt gtgcaaatgc aaattgtagg attattggac 1800
tagagcaacc atgcatgact ttacaaacct gattaataaa caacctttta tgtttcacag 1860
aagaactgtg ctggaaaatt gcagattagc acgcatataa atcccaaatg cttcagggga 1920
acatactgga tttgtaaaac cacatgttat gtctataagc actatttttc ttttaagaag 1980
ctaatacttt taccaaataa gatgagttag gttatgataa aaaataaatg ttgttgtttt 2040
tttccattca taaaaaataa tgatcaaatg ttttactcac acatgttaag caaataatat 2100
ttcattttca ttcattttct ttttggctta gtccctttat tgatctagta ttgtcacagc 2160
agaatgaacc accaacttac ccagcatatg ttttacgcag cagatgccct tccagctgca 2220
acccatcact gggaaacacc catacactca cagtcacaca gtttagccta cgcaattcac 2280
ctatatattc atcacatatc tttggacttg tgggggaaac cggaaactcc acacagaaat 2340
gccaactgac ccagctgagg ttcaaaccag cccttcttac tgtgaggtga cagcgctagc 2400
cattgcgcca ccgctccacc ctttatttta atttatttaa ttgaatttat tttattgtat 2460
ttgtcctaaa ttgccagtac aatcagtaca atcattagaa tggtttctga aggttcatgc 2520
ctgtaataac tgctttatat ttaaatttgt ctatagcaat aagatttagt aataatatta 2580
ataattttat attctattct attattatat tatatataca ttttcacact aaaccgaaaa 2640
gagacttctt attaacgacc tcaaaaaaat aactaaatct gaaaaagatc actgttacgc 2700
agattctgca aattctacaa aatgtttgta gtaaatatag tataaaagat gtttttagct 2760
tactttttac attattttat acatttaaac atgcatgaaa tcaattatta tcagcttgga 2820
ccttttcttg tccctactct tagtgggacg atgccaaagg tcttacaatg ggacgatacc 2880
aaaggtcttc agaggtctta tttaattgca ctgttaagag attaaggata aggtaatgat 2940
gagataaacc atcatcagag attatcatgt ctcagtttga tatctcgtct ctttatcttg 3000
tcatggagcc tccagataaa acttccacac tgcatgttgc ttaatttgaa tcatttgcag 3060
gctttgtaca ctattcatca ttacagataa tgctgaagct gttctttcac agccttgcat 3120
caatatttac aacattttca aacaatacaa ggggataatt cagtaataca atttaaaata 3180
aggttccaat aactatatta ctaataacta acaatgagca aaatacataa tgctgttatt 3240
ttagtataac tggatgagta ctgcagattt taaataaaat attcatggaa ttattgtcgt 3300
tactgtataa tgttggtgaa tgtatggtct gtttttgaca tttgtgtgca tttattttta 3360
tatctaaagt gttttataga tttgcatttt aatattagta gtaaatgcaa atgataaata 3420
ctttatcttt aaattaaaaa tattattatg cattacttat ctgtgataaa tatatcgtat 3480
gtgttatgtt actgataaaa tgttacaata ataatggttc ggttagggtt aaggttttag 3540
gacaaaacac aactgttcat tagtattcag atcagatcta tgaaataata ttggcaggtg 3600
caaattttca ttttaataat gtactagtac tgtaaatatt tgagttagct ttagaactgg 3660
ctttgaagta tattcactgg tagctgtctg ttaagtagaa ctgcacaaaa aaaaggtacg 3720
aggaagaacg aagcattgcc atatactgta ttctcaattt tagctgcaat agctgcactt 3780
ttgtagtaaa aagttcttca aagacccttt ttatatagtg tgaagaactt ttcaataatc 3840
ttaaaacatt tttctacata aataaaattt ttgtgcaatg aaatatttca aaaagtactt 3900
tataaaacca accattcatg tcaacacaga gccttaaaat aattgttacc agtatttctc 3960
aatagccaat gaggcatgca gcaagattgt aaactaattt aactgtaacc attaaatcta 4020
aagttttgac ctttgacctt tcaccacaat tgtttaaaaa tcaatacatg tggctagaat 4080
tcatagcttt caaacactct tcatagtccc tcagtagtta ctgcaacaca aggcacttac 4140
tagtataaca gacacaccct acacagttta aacagcaaac aattcaaaca aaagcaggac 4200
tttgttatga gaacaacaga gcgtgtatgt ttgaccatcg cagtacaagt gagtgcttgt 4260
tctcaggact tgaaatctcc gctctttgca caatcaatga ataagcaagg catgctggga 4320
tgtgtgtaac atatagcctg ttgggcgggt gagatttata cttggtgagc tttactcggc 4380
cacatcagca tgaagataat actcagataa ggcaacgctt cgccactcgc acaggtataa 4440
aagagtggct cggggtaaag ttaggccact gtcaggatca cacaacagtc tgtcatcatc 4500
<210> 2
<211> 744
<212> DNA
<213> 珊瑚(Discosoma sp.)
<400> 2
atggcctcct ccgaggacgt catcaaggag ttcatgcgct tcaaggtgcg catggagggc 60
tccgtgaacg gccacgagtt cgagatcgag ggcgagggcg agggccgccc ctacgagggc 120
acccagaccg ccaagctgaa ggtgaccaag ggcggccccc tgcccttcgc ctgggacatc 180
ctgtcccccc agttccagta cggctccaag gtgtacgtga agcaccccgc cgacatcccc 240
gactacaaga agctgtcctt ccccgagggc ttcaagtggg agcgcgtgat gaacttcgag 300
gacggcggcg tggtgaccgt gacccaggac tcctccctgc aggacggctc cttcatctac 360
aaggtgaagt tcatcggcgt gaacttcccc tccgacggcc ccgtaatgca gaagaagact 420
atgggctggg aggcctccac cgagcgcctg tacccccgcg acggcgtgct gaagggcgag 480
atccacaagg ccctgaagct gaaggacggc ggccactacc tggtggagtt aaagtccatc 540
tacatggcca agaagcccgt gcagctgccc ggctactact acgtggactc caagctggac 600
atcacctccc acaacgagga ctacaccatc gtggagcagt acgagcgcgc cgagggccgc 660
caccacctgt tcctgatgga tccactagtc cagtgtggtg gaattctgca gatatccagc 720
acagtggcgg ccgctcgagt ctag 744
<210> 3
<211> 32
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 3
tttcagtata ggcctacagc aaagtagaac ga 32
<210> 4
<211> 30
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 4
ccatttgttc catgaacttc tcgtagttct 30
<210> 5
<211> 31
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 5
ctctttcaac aattgcaaaa agagactgaa a 31
<210> 6
<211> 29
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 6
gatgatgaca gactgttgtg tgatcctga 29
<210> 7
<211> 36
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 7
acagtctgtc atcatcatgg cctcctccga ggacgt 36
<210> 8
<211> 38
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 8
atctagatcc ggtggatccc tagactcgag cggccgcc 38
<210> 9
<211> 32
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 9
ggatccaccg gatctagata actgatcata at 32
<210> 10
<211> 45
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 10
gttgaaagag aagcttaaac aagaatctct agttttcttt cttgc 45
<210> 11
<211> 9948
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 11
tatagtgagt cgtattacaa ttcactggcc gtcgttttac aacgtcgtga ctgggaaaac 60
cctggcgtta cccaacttaa tcgccttgca gcacatcccc ctttcgccag ctggcgtaat 120
agcgaagagg cccgcaccga tcgcccttcc caacagttgc gcagcctgaa tggcgaatgg 180
acgcgccctg tagcggcgca ttaagcgcgg cgggtgtggt ggttacgcgc agcgtgaccg 240
ctacacttgc cagcgcccta gcgcccgctc ctttcgcttt cttcccttcc tttctcgcca 300
cgttcgccgg ctttccccgt caagctctaa atcgggggct ccctttaggg ttccgattta 360
gtgctttacg gcacctcgac cccaaaaaac ttgattaggg tgatggttca cgtagtgggc 420
catcgccctg atagacggtt tttcgccctt tgacgttgga gtccacgttc tttaatagtg 480
gactcttgtt ccaaactgga acaacactca accctatctc ggtctattct tttgatttat 540
aagggatttt gccgatttcg gcctattggt taaaaaatga gctgatttaa caaaaattta 600
acgcgaattt taacaaaata ttaacgctta caatttcctg atgcggtatt ttctccttac 660
gcatctgtgc ggtatttcac accgcatcag gtggcacttt tcggggaaat gtgcgcggaa 720
cccctatttg tttatttttc taaatacatt caaatatgta tccgctcatg agacaataac 780
cctgataaat gcttcaataa tattgaaaaa ggaagagtat gagtattcaa catttccgtg 840
tcgcccttat tccctttttt gcggcatttt gccttcctgt ttttgctcac ccagaaacgc 900
tggtgaaagt aaaagatgct gaagatcagt tgggtgcacg agtgggttac atcgaactgg 960
atctcaacag cggtaagatc cttgagagtt ttcgccccga agaacgtttt ccaatgatga 1020
gcacttttaa agttctgcta tgtggcgcgg tattatcccg tattgacgcc gggcaagagc 1080
aactcggtcg ccgcatacac tattctcaga atgacttggt tgagtactca ccagtcacag 1140
aaaagcatct tacggatggc atgacagtaa gagaattatg cagtgctgcc ataaccatga 1200
gtgataacac tgcggccaac ttacttctga caacgatcgg aggaccgaag gagctaaccg 1260
cttttttgca caacatgggg gatcatgtaa ctcgccttga tcgttgggaa ccggagctga 1320
atgaagccat accaaacgac gagcgtgaca ccacgatgcc tgtagcaatg gcaacaacgt 1380
tgcgcaaact attaactggc gaactactta ctctagcttc ccggcaacaa ttaatagact 1440
ggatggaggc ggataaagtt gcaggaccac ttctgcgctc ggcccttccg gctggctggt 1500
ttattgctga taaatctgga gccggtgagc gtgggtctcg cggtatcatt gcagcactgg 1560
ggccagatgg taagccctcc cgtatcgtag ttatctacac gacggggagt caggcaacta 1620
tggatgaacg aaatagacag atcgctgaga taggtgcctc actgattaag cattggtaac 1680
tgtcagacca agtttactca tatatacttt agattgattt aaaacttcat ttttaattta 1740
aaaggatcta ggtgaagatc ctttttgata atctcatgac caaaatccct taacgtgagt 1800
tttcgttcca ctgagcgtca gaccccgtag aaaagatcaa aggatcttct tgagatcctt 1860
tttttctgcg cgtaatctgc tgcttgcaaa caaaaaaacc accgctacca gcggtggttt 1920
gtttgccgga tcaagagcta ccaactcttt ttccgaaggt aactggcttc agcagagcgc 1980
agataccaaa tactgttctt ctagtgtagc cgtagttagg ccaccacttc aagaactctg 2040
tagcaccgcc tacatacctc gctctgctaa tcctgttacc agtggctgct gccagtggcg 2100
ataagtcgtg tcttaccggg ttggactcaa gacgatagtt accggataag gcgcagcggt 2160
cgggctgaac ggggggttcg tgcacacagc ccagcttgga gcgaacgacc tacaccgaac 2220
tgagatacct acagcgtgag ctatgagaaa gcgccacgct tcccgaaggg agaaaggcgg 2280
acaggtatcc ggtaagcggc agggtcggaa caggagagcg cacgagggag cttccagggg 2340
gaaacgcctg gtatctttat agtcctgtcg ggtttcgcca cctctgactt gagcgtcgat 2400
ttttgtgatg ctcgtcaggg gggcggagcc tatggaaaaa cgccagcaac gcggcctttt 2460
tacggttcct ggccttttgc tggccttttg ctcacatgtt ctttcctgcg ttatcccctg 2520
attctgtgga taaccgtatt accgcctttg agtgagctga taccgctcgc cgcagccgaa 2580
cgaccgagcg cagcgagtca gtgagcgagg aagcggaaga gcgcccaata cgcaaaccgc 2640
ctctccccgc gcgttggccg attcattaat gcagctggca cgacaggttt cccgactgga 2700
aagcgggcag tgagcgcaac gcaattaatg tgagttagct cactcattag gcaccccagg 2760
ctttacactt tatgcttccg gctcgtatgt tgtgtggaat tgtgagcgga taacaatttc 2820
acacaggaaa cagctatgac catgattacg ccaagctatt taggtgacac tatagaatac 2880
tcaagctatg catccaacgc gttgggagct ctcccatatg gtcgagcaga ggtgtaaaaa 2940
gtactcaaaa attttactca agtgaaagta caagtactta gggaaaattt tactcaatta 3000
aaagtaaaag tatctggcta gaatcttact tgagtaaaag taaaaaagta ctccattaaa 3060
attgtacttg agtattaagg aagtaaaagt aaaagcaaga aagaaaacta gagattcttg 3120
tttaagcttc tctttcaaca attgcaaaaa gagactgaaa gggcagaagc acaggttcat 3180
ctggtagagg aacaactgac cttgaccaaa ctgcagcaaa ccaagaccaa tgacttgaga 3240
tctgcctcct aaagactacg ctcagacaag ctgctctctc cacatcagat gaggaagtct 3300
gaacttattg tggagttttt gacattaagt ctttttatta tttacatctt tttattattg 3360
aaacttatta taaatatcct caatctacag tgttgtaggt ctcagatgag cggactgctg 3420
gaagaggatg gggtgttgtt tttcttgttt ttattattat ttattattat tattatttta 3480
attattataa ttttttttct tagttttcat ttcaaataaa aataaagtta tattgacccc 3540
atgctattct actctttaca tatctatagt tctacattgt gatgtcctat gctgtttgag 3600
cactggttat ccagatttag tgatcctgaa aagttcctat ccagatcaga ttgatccaat 3660
ccgaagttgc tttgaaaaac tggctcaaaa aatgagctgg attacgtgat cacggatcgc 3720
aaaaacagga ttactaaatc tggatcaatt ttatccggat taaacctttt gaaaaaccgg 3780
gcccaggttg ttaatgttgt tatccactct gcagatctct ccagatttaa aaaatttaat 3840
ggtgaagatt atgaagatgc gcagtgggta gcatgattgc ctcacagcaa gaaggtcact 3900
gtttgagcct cggctgggtc agttggcatt tctgtgtaga gtttgcatgt tctccctggg 3960
ttgtcgtggg ttgcctctgg atgctctggt ttatcccaga agttcaaaga catgcgctgt 4020
aggtgaattg ggtaagctaa aaatgtctgt tgtgaatgtg tgtgggagat tcccagtgat 4080
ggattgcagc tggaagggca tgcactgcgt aaaacattgg cggttcattc cgctctggcg 4140
accccattaa ttaacggact aagccgaaaa gaaaatgaat gaatgaatga ttataaagat 4200
gaagtgttta taaatagtta gcattttgtg atctccactg tattgttttg aaagttactt 4260
caggacattc ttcatctatc actgtcgata gtcagtggta agatggtgta ggtgtagata 4320
gaggtaaaaa ctctgttttt tttttttttt tcatatttag aacagtaaat cagatctgta 4380
tcgttgtctt gatcatgatt ggtgtgtagg cacctttatt taaaaaaaaa tgctggcttt 4440
acagccagac tttaataacc cctaaagcaa tagcctacta cttgtacatg actggaatca 4500
ctccagccaa acttgaccag cctgatatta ctgcaaatac ctccgtcttg tggtacaaat 4560
aagtaagtac attcttttaa aaatagctct gaagtgttgc aatgaaaacc aatggctaaa 4620
atcgttctga agcactatga ccccaatatt ttcaatattt ccacttccac agagaagtag 4680
ataatagata gttagttaat cattgccttt taatagttaa tcattacctt ctgaacaaat 4740
tgtgctagca gttactactc ctctgtagta aaatacataa ccatgccaag cgcataaggc 4800
aattgattat gtaagattaa agcatcataa aaacaaattg ttttggattg tgtctaaact 4860
ctgagtacat cagagaactg tttatttccc agtgatagtg tgcaaatgca aattgtagga 4920
ttattggact agagcaacca tgcatgactt tacaaacctg attaataaac aaccttttat 4980
gtttcacaga agaactgtgc tggaaaattg cagattagca cgcatataaa tcccaaatgc 5040
ttcaggggaa catactggat ttgtaaaacc acatgttatg tctataagca ctatttttct 5100
tttaagaagc taatactttt accaaataag atgagttagg ttatgataaa aaataaatgt 5160
tgttgttttt ttccattcat aaaaaataat gatcaaatgt tttactcaca catgttaagc 5220
aaataatatt tcattttcat tcattttctt tttggcttag tccctttatt gatctagtat 5280
tgtcacagca gaatgaacca ccaacttacc cagcatatgt tttacgcagc agatgccctt 5340
ccagctgcaa cccatcactg ggaaacaccc atacactcac agtcacacag tttagcctac 5400
gcaattcacc tatatattca tcacatatct ttggacttgt gggggaaacc ggaaactcca 5460
cacagaaatg ccaactgacc cagctgaggt tcaaaccagc ccttcttact gtgaggtgac 5520
agcgctagcc attgcgccac cgctccaccc tttattttaa tttatttaat tgaatttatt 5580
ttattgtatt tgtcctaaat tgccagtaca atcagtacaa tcattagaat ggtttctgaa 5640
ggttcatgcc tgtaataact gctttatatt taaatttgtc tatagcaata agatttagta 5700
ataatattaa taattttata ttctattcta ttattatatt atatatacat tttcacacta 5760
aaccgaaaag agacttctta ttaacgacct caaaaaaata actaaatctg aaaaagatca 5820
ctgttacgca gattctgcaa attctacaaa atgtttgtag taaatatagt ataaaagatg 5880
tttttagctt actttttaca ttattttata catttaaaca tgcatgaaat caattattat 5940
cagcttggac cttttcttgt ccctactctt agtgggacga tgccaaaggt cttacaatgg 6000
gacgatacca aaggtcttca gaggtcttat ttaattgcac tgttaagaga ttaaggataa 6060
ggtaatgatg agataaacca tcatcagaga ttatcatgtc tcagtttgat atctcgtctc 6120
tttatcttgt catggagcct ccagataaaa cttccacact gcatgttgct taatttgaat 6180
catttgcagg ctttgtacac tattcatcat tacagataat gctgaagctg ttctttcaca 6240
gccttgcatc aatatttaca acattttcaa acaatacaag gggataattc agtaatacaa 6300
tttaaaataa ggttccaata actatattac taataactaa caatgagcaa aatacataat 6360
gctgttattt tagtataact ggatgagtac tgcagatttt aaataaaata ttcatggaat 6420
tattgtcgtt actgtataat gttggtgaat gtatggtctg tttttgacat ttgtgtgcat 6480
ttatttttat atctaaagtg ttttatagat ttgcatttta atattagtag taaatgcaaa 6540
tgataaatac tttatcttta aattaaaaat attattatgc attacttatc tgtgataaat 6600
atatcgtatg tgttatgtta ctgataaaat gttacaataa taatggttcg gttagggtta 6660
aggttttagg acaaaacaca actgttcatt agtattcaga tcagatctat gaaataatat 6720
tggcaggtgc aaattttcat tttaataatg tactagtact gtaaatattt gagttagctt 6780
tagaactggc tttgaagtat attcactggt agctgtctgt taagtagaac tgcacaaaaa 6840
aaaggtacga ggaagaacga agcattgcca tatactgtat tctcaatttt agctgcaata 6900
gctgcacttt tgtagtaaaa agttcttcaa agaccctttt tatatagtgt gaagaacttt 6960
tcaataatct taaaacattt ttctacataa ataaaatttt tgtgcaatga aatatttcaa 7020
aaagtacttt ataaaaccaa ccattcatgt caacacagag ccttaaaata attgttacca 7080
gtatttctca atagccaatg aggcatgcag caagattgta aactaattta actgtaacca 7140
ttaaatctaa agttttgacc tttgaccttt caccacaatt gtttaaaaat caatacatgt 7200
ggctagaatt catagctttc aaacactctt catagtccct cagtagttac tgcaacacaa 7260
ggcacttact agtataacag acacacccta cacagtttaa acagcaaaca attcaaacaa 7320
aagcaggact ttgttatgag aacaacagag cgtgtatgtt tgaccatcgc agtacaagtg 7380
agtgcttgtt ctcaggactt gaaatctccg ctctttgcac aatcaatgaa taagcaaggc 7440
atgctgggat gtgtgtaaca tatagcctgt tgggcgggtg agatttatac ttggtgagct 7500
ttactcggcc acatcagcat gaagataata ctcagataag gcaacgcttc gccactcgca 7560
caggtataaa agagtggctc ggggtaaagt taggccactg tcaggatcac acaacagtct 7620
gtcatcatca tggcctcctc cgaggacgtc atcaaggagt tcatgcgctt caaggtgcgc 7680
atggagggct ccgtgaacgg ccacgagttc gagatcgagg gcgagggcga gggccgcccc 7740
tacgagggca cccagaccgc caagctgaag gtgaccaagg gcggccccct gcccttcgcc 7800
tgggacatcc tgtcccccca gttccagtac ggctccaagg tgtacgtgaa gcaccccgcc 7860
gacatccccg actacaagaa gctgtccttc cccgagggct tcaagtggga gcgcgtgatg 7920
aacttcgagg acggcggcgt ggtgaccgtg acccaggact cctccctgca ggacggctcc 7980
ttcatctaca aggtgaagtt catcggcgtg aacttcccct ccgacggccc cgtaatgcag 8040
aagaagacta tgggctggga ggcctccacc gagcgcctgt acccccgcga cggcgtgctg 8100
aagggcgaga tccacaaggc cctgaagctg aaggacggcg gccactacct ggtggagtta 8160
aagtccatct acatggccaa gaagcccgtg cagctgcccg gctactacta cgtggactcc 8220
aagctggaca tcacctccca caacgaggac tacaccatcg tggagcagta cgagcgcgcc 8280
gagggccgcc accacctgtt cctgatggat ccactagtcc agtgtggtgg aattctgcag 8340
atatccagca cagtggcggc cgctcgagtc tagggatcca ccggatctag ataactgatc 8400
ataatcagcc ataccacatt tgtagaggtt ttacttgctt taaaaaacct cccacacctc 8460
cccctgaacc tgaaacataa aatgaatgca attgttgttg ttaacttgtt tattgcagct 8520
tataatggtt acaaataaag caatagcatc acaaatttca caaataaagc atttttttca 8580
ctgcattcta gttgtggttt gtccaaactc atcaatgtat cttaacgcgt aaattgtaag 8640
cgttaagatt ttgtgatgag tctggtcaaa tttttgctag attggcgcat tttttatgca 8700
ataggccgaa atcggcaaaa tcccttataa atcaaaagaa tagaccgaga tagggttgag 8760
tgttgttcca gtttggaaca agagtccact attaaagaac gtggactcca acgtcaaagg 8820
gcgaaaaacc gtctatcagg gcgatggcca ctacgtgaac ccatcaccct aatcaagttt 8880
tttggggtcg aggtgccgta aagcactaaa tcggaaccct aaagggagcc ccccgattta 8940
gagcttgacg gggaaagccg gcgaacgtgg cgagaaagga agggaagaaa gcgaaaggag 9000
cgggcgctag ggcgctggca agtgtagcgg tcacgctgcg cgtaaccacc acacccgccg 9060
cgcttaatgc gccgctacag ggcgcgtcag gtggcacttt tcggggaaat gtgcgcggaa 9120
cccctatttg tttatttttc taaatacatt caaatatgta tccgctcatg agacaataac 9180
cctgataaat gcttcaataa tattgaaaaa ggaagagtcc tgaggcggaa agaaccagct 9240
gtggaatgtg tgtcagttag ggtgtggaaa gtccccaggc tccccagcag gcagaagtat 9300
gcaaagcatg catctcaatt agtcagcaac caggtgtgga aagtccccag gctccccagc 9360
aggcagaagt atgcaaagca tgcatctcaa ttagtcagca accatagtcc cgcccctaac 9420
tccgcccatc ccgcccctaa ctccgcccag ttccgcccat tctccgcccc atggctgact 9480
aatttttttt atttatgcag aggccgaggc cgcctcggcc tctgagctat tccagaagta 9540
gtgaggaggc ttttttggag gcctaggctt ttgcaaagat cgatcaagag acaggatgag 9600
gatcgtttcg catgattgaa caagatggat tgcacgcagg ttctccggcc gctctagatg 9660
gccagatcta tttaaattaa actgggcatc agcgcaattc aattggtttg gtaatagcaa 9720
gggaaaatag aatgaagtga tctccaaaaa ataagtactt tttgactgta aataaaattg 9780
taaggagtaa aaagtacttt tttttctaaa aaaatgtaat taagtaaaag taaaagtatt 9840
gatttttaat tgtactcaag taaagtaaaa atccccaaaa ataatactta agtacagtaa 9900
tcaagtaaaa ttactcaagt actttacacc tctgggccca attcgccc 9948
Claims (8)
1.一种培育肠道特异性表达红色荧光转基因斑马鱼的方法,其特征在于,是以Tol2转座酶系统为工具,构建以肠道脂肪酸结合蛋白启动子带动DsRed红色荧光蛋白在肠道特异表达的转基因斑马鱼;该方法具体包括以下步骤:
(1)从斑马鱼肠道组织基因组扩增获得肠道特异性启动子Pifabp,其序列如SEQ IDNO:1所示;
(2)从商品化质粒中扩增获得dsred片段,其序列如SEQ ID NO:2所示;
(3)以mini Tol2质粒为骨架,构建基于肠道特异性启动子Pifabp表达红色荧光蛋白dsred的重组表达载体;
(4)将步骤(3)中的重组表达载体显微注射至斑马鱼受精卵,筛选出存在红色荧光信号的胚胎,并按常规方法饲养,得到F0代;
(5)将F0代斑马鱼与野生型斑马鱼杂交获得F1代,筛选获得杂合的肠道特异性表达红色荧光转基因斑马鱼;
(6)将F1代斑马鱼进行自交获得F2代,筛选得到纯合及杂合的肠道特异性表达红色荧光转基因斑马鱼;
(7)将F2代斑马鱼与野生型斑马鱼测交,筛选出后代100%肠道表达红色荧光蛋白对应的F2代亲本斑马鱼,作为纯品系留种保存。
2.根据权利要求1所述的方法,其特征在于,所述步骤(1)中,启动子Pifabp的扩增过程包括:
(1.1)从成年斑马鱼的肠道组织中获取基因组DNA;
(1.2)设计并合成巢式PCR引物,其序列如SEQ ID NO:3-SEQ ID NO:6所示;
(1.3)以步骤(1.1)中提取的斑马鱼基因组为模板,利用步骤(1.2)所述引物进行两轮巢式PCR扩增,PCR产物经分离鉴定后进行回收纯化。
3.根据权利要求1所述的方法,其特征在于,所述步骤(2)中,dsred片段的扩增过程包括:
(2.1)根据dsred商品化质粒的图谱,设计并合成特异性引物,其序列如SEQ ID NO:7-SEQ ID NO:8所示;在所述引物上加悬挂序列,用于与ifabp启动子及pTol2质粒融合;
(2.2)以dsred商品化质粒为模板,利用步骤(2.1)所述引物进行PCR扩增,PCR产物经分离鉴定后进行回收纯化。
4.根据权利要求1所述的方法,其特征在于,所述步骤(3)中,构建重组表达载体的过程包括:
(3.1)以纯化的启动子Pifabp和dsred片段为模板进行融合PCR,PCR产物经分离鉴定后进行回收纯化;
(3.2)根据miniTol2质粒图谱,设计并合成特异性引物,其序列如SEQ ID NO:9-SEQ IDNO:10所示;在所述引物上加悬挂序列,用于PCR扩增获得用于克隆的线性化质粒;
(3.3)以miniTol2质粒为模板,利用步骤(3.2)所述引物进行PCR扩增,获得用于克隆的线性化质粒,PCR产物经分离鉴定后进行回收纯化;纯化产物用DpnI酶切,去除质粒模板,并将酶切产物纯化回收;
(3.4)利用步骤(3.1)所得Pifabp-dsred融合片段和步骤(3.3)所得线性化质粒进行一步克隆,然后将克隆质粒转化入大肠杆菌DH5α感受态中;
(3.5)挑取单菌落进行培养,以Pifabp-dsred融合片段为阳性对照,取菌液进行PCR鉴定;对PCR产物鉴定为阳性克隆的进行测序比对,保存测序完全正确的阳性克隆对应的菌液。
5.根据权利要求1所述的方法,其特征在于,所述步骤(4)中,在斑马鱼受精卵产下后1小时内,将步骤(3)获得的重组表达载体通过显微注射导入斑马鱼单细胞阶段受精卵中;按常规方法饲养,将其定为F0代。
6.根据权利要求1所述的方法,其特征在于,所述步骤(5)中,待F0代发育至性成熟后,将其与WB野生型斑马鱼进行测交;获取3dpf及5dpf的胚胎,观察并筛选肠道中有红色荧光特异性表达的胚胎;按常规方法饲养,并将其定为F1代。
7.根据权利要求1所述的方法,其特征在于,所述步骤(6)中,待F1代发育至性成熟后进行自交;获取3dpf及5dpf的胚胎,观察并筛选出肠道红色荧光特异性表达的胚胎;按常规方法饲养3-4个月至性成熟,与WB野生型斑马鱼进行测交,筛选出后代100%胚胎有荧光信号的定为F2代纯合子,作为纯品系留种保存。
8.用于培育肠道特异性表达红色荧光转基因斑马鱼的专用质粒,其特征在于,是以mini Tol2质粒为骨架,包含肠道特异性表达启动子Pifabp及红色荧光蛋白dsred序列,还含有Poly A序列及Tol2转座酶序列;该质粒的序列如SEQ ID NO:11所示。
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108642082A (zh) * | 2018-03-29 | 2018-10-12 | 苏州木芮生物科技有限公司 | 一种全身糖皮质激素受体基因过量表达转基因斑马鱼的构建方法 |
CN108642081A (zh) * | 2018-03-29 | 2018-10-12 | 苏州木芮生物科技有限公司 | 一种糖皮质激素应答原件驱动的荧光素酶转基因斑马鱼的构建方法 |
CN112430624A (zh) * | 2020-11-25 | 2021-03-02 | 汕头大学 | 一种斑马鱼肌肉特异诱导型表达载体及应用 |
CN116162652A (zh) * | 2023-03-03 | 2023-05-26 | 中国海洋大学 | 一种缺氧响应的转基因斑马鱼模型的构建方法及应用 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105274140A (zh) * | 2015-10-28 | 2016-01-27 | 厦门大学 | 肌细胞特异表达mCherry荧光蛋白斑马鱼家系构建方法 |
-
2020
- 2020-06-08 CN CN202010511231.4A patent/CN111621522A/zh active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105274140A (zh) * | 2015-10-28 | 2016-01-27 | 厦门大学 | 肌细胞特异表达mCherry荧光蛋白斑马鱼家系构建方法 |
Non-Patent Citations (2)
Title |
---|
GUOR MOUR HER等: "Functional Conserved Elements Mediate Intestinal-Type Fatty Acid Binding Protein (I-FABP) Expression in the Gut Epithelia of Zebrafish Larvae", 《DEVELOPMENTAL DYNAMICS》 * |
GUOR MOUR HER等: "Zebrafish Intestinal Fatty Acid Binding Protein (I-FABP) Gene Promoter Drives Gut-Specific Expression in Stable Transgenic Fish", 《GENESIS》 * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108642082A (zh) * | 2018-03-29 | 2018-10-12 | 苏州木芮生物科技有限公司 | 一种全身糖皮质激素受体基因过量表达转基因斑马鱼的构建方法 |
CN108642081A (zh) * | 2018-03-29 | 2018-10-12 | 苏州木芮生物科技有限公司 | 一种糖皮质激素应答原件驱动的荧光素酶转基因斑马鱼的构建方法 |
CN108642082B (zh) * | 2018-03-29 | 2022-05-13 | 苏州木芮生物科技有限公司 | 一种全身糖皮质激素受体基因过量表达转基因斑马鱼的构建方法 |
CN108642081B (zh) * | 2018-03-29 | 2022-05-13 | 苏州木芮生物科技有限公司 | 一种糖皮质激素应答原件驱动的荧光素酶转基因斑马鱼的构建方法 |
CN112430624A (zh) * | 2020-11-25 | 2021-03-02 | 汕头大学 | 一种斑马鱼肌肉特异诱导型表达载体及应用 |
CN112430624B (zh) * | 2020-11-25 | 2023-08-18 | 汕头大学 | 一种斑马鱼肌肉特异诱导型表达载体及应用 |
CN116162652A (zh) * | 2023-03-03 | 2023-05-26 | 中国海洋大学 | 一种缺氧响应的转基因斑马鱼模型的构建方法及应用 |
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