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试验旨在筛选水牛HSD17B1基因启动子活性区域及影响因素,并预测其转录结合因子,为探究该基因在水牛繁殖性能中的调控机理提供理论依据。以水牛血液基因组DNA为模板,PCR扩增得到3个HSD17B1基因启动子活性区域序列,并定向克隆至pGL3-promoter载体;将重组质粒转染到水牛卵泡颗粒细胞,通过双荧光素酶检测系统测定相对荧光素酶活性,并探究其与促黄体素(luteinizing hormone,LH)和促卵泡素(follicle stimulating hormone,FSH)的关系;利用生物信息学方法对HSD17B1基因启动子区进行转录结合因子预测。结果显示,本试验成功克隆了3个不同长度的HSD17B1基因启动子片段,并成功构建了双荧光素酶报告载体。经不同长度启动子片段的活性检测发现,pGL-pro-HSD17B1-1500活性最强,证实-866/-1 500 bp为HSD17B1基因核心启动子区域,表明该区域对HSD17B1基因转录调控有重要作用。荧光素酶活性检测结果显示,添加LH可增强HSD17B1基因启动子活性。生物信息学分析发现,HSD17B1基因启动子区存在6个转录因子结合位点:Sp1(-2 327/-2 317 bp)、HOXA4(-2 162/-2 146 bp)、Sp1(-1 409/-1 395 bp)、Sp1(-1 391/-1 380 bp)、Sp1(-1 345/-1 319 bp)和GATA1(-812/-801 bp),但无CpG岛,有1个TATA-box和2个CAAT-box。本研究成功构建了HSD17B1基因启动子荧光素酶报告载体,确定了HSD17B1基因启动子核心区域,并证明LH可增强启动子活性。 相似文献
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选择HSD11B1和MyoG2个基因作为影响妊娠期长短的候选基因。在7个中外猪群体中采用PCR-RFLP技术研究了HSD11B1和MyoG2个基因多态性与妊娠期长短的关系。HSD11B1基因的PCR-Bsh1236Ⅰ-RFLP分析结果表明:清平猪、新清平猪母系、大白猪、长白猪、杜洛克猪、中国瘦肉猪新品系DIV1和DIV2系猪群中A等位基因的频率分别为0.538、0.752、0.522、0.941、1.000、0.889和0.594;除DIV2外,HSD11B1不同基因型与妊娠期长短无显著关系(P〉0.05)。MyoG基因的PCR-MspⅠ-RFLP分析结果表明:清平猪、新清平猪母系、大白猪、长白猪、杜洛克猪、中国瘦肉猪新品系DIV1和DIV2系猪群中M等位基因的频率分别为1.000、0.534、0.370、0.115、0.094、0.382和0.243;清平猪中只存在MM基因型,其他群体中3种基因型皆有分布;新清平猪母系MM比NN基因型母猪妊娠期要短,且在经产长白猪中差异极显著(P〈0.01)。 相似文献
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生殖激素控制卵泡细胞凋亡的研究进展 总被引:8,自引:0,他引:8
研究表明颗粒细胞凋亡是导致卵泡闭锁的重要原因,而颗粒细胞凋亡涉及许多因素,其中生殖激素,如GnRH、FSH、LH、P4、E、A、GH、Mel、inhibin、activin、follistatin等间接地和直接地对卵巢卵泡细胞凋亡发挥重要的综合控制作用,因此正确理解激素对体内、外卵泡及颗粒细胞发育和衰亡的调节网络具有很重要的理论和实践意义。 相似文献
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Shuna Zhang Ling Wang Lei Wang Yaru Chen Fenge Li 《Reproduction in domestic animals》2019,54(11):1459-1469
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为了阐明水牛17β-羟类固醇脱氢酶1 (17 beta-hydroxysteroid dehydrogenase 1,HSD17B1)基因对水牛繁殖性能的影响,本试验采用了3'-RACE克隆获得HSD17B1基因,并对其核苷酸序列和蛋白质序列进行了生物信息学分析,通过构建其真核表达载体并转染293T细胞验证所构建载体的准确性。结果表明,水牛HSD17B1基因编码区长954 bp,3'-UTR区长58 bp,编码317个氨基酸。BLAST分析显示水牛HSD17B1核苷酸序列与牛、绵羊、猪、马、犬、非洲象和人的相似性分别为100%、100%、92%、94%、87%、87%和87%,系统进化树分析结果表明,HSD17B1基因在不同物种及进化的过程中具有高度保守性。蛋白质分析结果表明HSD17B1蛋白呈弱酸性,无信号肽,亚定位于细胞质,存在type1_17beta-HSD-like_SDR_c、PRK05993、LPOR和FabG等结构域。试验成功构建了水牛HSD17B1基因真核表达载体pEGFPN1-HSD17B1,转染293T后,产生较强的绿色荧光信号,表明能够形成HSD17B1-EGFP融合蛋白。水牛HSD17B1基因的克隆及其真核表达载体的成功构建,为今后阐明HSD17B1基因在水牛卵泡及胚胎发生过程中的作用及分子机制奠定了理论基础。 相似文献
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ZHU Peng PANG Chun-ying DENG Ting-xian DUAN An-qin LU Xing-rong CHEN Ming-tang YANG Bing-zhuang LIANG Xian-wei 《中国畜牧兽医》2016,43(3):559-567
In order to clarify the effect of 17 beta-hydroxysteroid dehydrogenase 1 (HSD17B1) gene on the reproductive performance of buffalo,in this study,buffalo HSD17B1 gene was cloned by 3'-RACE,analyzed by bioinformatics,and studied with eukaryotic vector construction and cell transfection technology.The results showed that the coding region of buffalo HSD17B1 was 954 bp,3'-UTR was 58 bp,encoded 317 amino acids.The buffalo HSD17B1 gene shared 100%,100%,92%,94%,87%,87% and 87% of similar nucleotide sequence with that of Bos taurus,Ovis aries,Sus scrofa,Equusca ballus,Canis lupus,Loxodonta africana and Homo sapiens,respectively.Phylogenetic tree analysis showed that HSD17B1 gene was highly conserved in different species and evolution.HSD17B1 protein was weakly acidic,without signal peptide,located inthe cytoplasmic,and with the presence of type1_17beta-HSD-like_SDR_c,PRK05993,LPOR and FabG domains.The buffalo HSD17B1 eukaryotic expression vector was successfully constructed,after transfected into 293T cell lines,HSD17B1-EGFP fusion protein was detectable.In a word,the success cloning and construction of eukaryotic expression vector of buffalo HSD17B1 gene,provided an important reference for surveying the regulation mechanism of HSD17B1 gene during buffalo folliculogenesis and embryogenesis. 相似文献
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王莹;张姣姣;王鲜忠;权富生 《畜牧兽医学报》2025,56(4):1508-1517
卵巢颗粒细胞(granulosa cells, GCs)是雌性动物卵泡发育的基础保障。过去人们普遍认为GCs凋亡能调控卵泡发育。然而;近年来研究发现GCs自噬也能调控卵泡发育。在畜牧养殖行业中;卵泡发育的优劣与雌性动物繁殖率的高低息息相关;直接影响养殖场经济效益。目前;越来越多研究表明miRNAs是调控GCs自噬的因素之一。因此;本文将从GCs的来源、结构和功能、GCs自噬对卵巢的重要性、卵巢GCs自噬相关的miRNAs及其对卵泡发育的调控作用等方面的研究进展进行综述;以期为今后相关研究提供参考。 相似文献
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PEI Yaping ZHAO Jin SUN Na SUN Panpan SUN Yaogui FAN Kuohai YIN Wei LI Hongquan 《畜牧兽医学报》1956,51(12):3068-3075
Ovarian granulosa cells provide a special microenvironment for follicle formation and maturation through interaction with oocytes and their own secretion. A variety of harmful stimuli can cause granulosa cell apoptosis and metabolic disorders, reduce the quality of oocytes and have a negative impact on embryo formation. Zearalenone (ZEA) is a common cause of ovarian granulosa cells injury in the livestock industry, which is produced by mycotoxins, and lack of effective treatment drug. Therefore, in the current study zearalenone was used to induce ovarian granulosa cell injury and to explore the protective effect of caffeic acid on zearalenone-induced ovarian granulosa cell apoptosis in mice. Mouse ovarian granulosa cells were isolated by mechanical method, and indirect immunofluorescence was used to identify the isolated cells. MTT assay was used to determine the effect of caffeic acid on the activity of normal mouse ovarian granulosa cells.After granulosa cells were co-treated with caffeic acid (200, 100 and 50 μg·mL-1) and ZEA for 24 hours, and control and ZEA group were set up at the same time, cell morphology and adherence were observed under a microscope. MTT was also used to detect cell viability. Caspase-3 mRNA expression level was detected by qRT-PCR. Cleaved-caspase-3 and cleaved-PARP protein expre-ssion levels were determined by Western blot. The results showed that positive FSHR staining appeared in cell cytoplasm of the test group, which confirmed that the isolated cells were mouse ovarian granulosa cells. The cell viability was above 90% which showed that caffeic acid had no toxic effect on granulosa cells. Compared with control group, ZEA group had smaller cell size, poor adherence, increased cell gap, and significant reduction in cell viability (P<0.001). Furthermore, the relative expression of caspase-3 mRNA, and cleaved-caspase-3 and cleaved-PARP protein level were significantly increased (P<0.001) compared with the control group. After caffeic acid treatment, cell gap was reduced, adherence was tight, cell viability was significantly increased (P<0.001). Caffeic acid significantly reduced zearalenone-induced increase in caspase-3 mRNA, and cleaved-caspase-3 and cleaved-PARP protein expression level (P<0.001). This study indicated that caffeic acid can restore granulosa cell viability by inhibiting ZEA-induced apoptosis. 相似文献
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何雨;王翔宇;狄冉;储明星;梁琛 《畜牧兽医学报》2025,56(2):679-688
旨在探索骨形态发生蛋白4(bone morphogenetic protein 4, BMP4)对绵羊卵巢颗粒细胞中间隙连接蛋白基因(gap junction protein alpha 1, GJA1)表达的影响及其分子调控机制。本研究利用廊坊市屠宰场收集的2~4岁健康绵羊卵巢分离颗粒细胞;采用免疫荧光染色技术定位GJA1在颗粒细胞中的分布。将细胞随机分为4组;分别添加0、10、50和100 ng·mL-1浓度的重组BMP4蛋白;每组3个重复;培养24 h;利用CCK-8法评估细胞活性;RT-qPCR和Western blot研究BMP4对GJA1的mRNA和蛋白表达水平的影响。为探究BMP4调控GJA1表达的潜在机制;将细胞随机分为3组;每组3个重复;除对照组外分别添加10 μmol·L-1 BMP I型受体抑制剂(Dorsomorphin)和干扰小RNA敲除SMAD家族蛋白4(SMAD family member 4, SMAD4);均添加100 ng·mL-1的BMP4处理细胞24 h;RT-qPCR检测GJA1和SMAD4表达量;Western blot分析测定GJA1和SMAD4表达水平以及SMAD1/5/8的磷酸化水平;最后利用划痕染料示踪试验检测绵羊卵巢颗粒细胞之间的间隙连接活性。结果显示;BMP4显著抑制了绵羊卵巢颗粒细胞中GJA1表达和间隙连接活性(P < 0.05);此抑制效应在添加Dorsomorphin和敲除SMAD4后显著减弱(P < 0.05);同时;BMP4处理显著增加了SMAD1/5/8的磷酸化水平(P < 0.05)。综上;BMP4通过SMAD1/5/8-SMAD4信号转导调控GJA1表达进而影响颗粒细胞间隙连接活性;本结果增加了对绵羊BMP/SMAD通路调控颗粒细胞间隙连接活性的了解;为改进体外卵泡成熟方法和高繁母羊的分子育种提供了基础。 相似文献
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旨在验证SMAD1基因在转录组测序中单羔组对多羔组上调的结果,并探究SMAD1基因对黔北麻羊产羔性状的影响。本试验选取健康、体重45 kg、4岁左右的单、多羔黔北麻羊母羊为研究对象,采用qRT-PCR法检测SMAD1基因在单、多羔组黔北麻羊母羊子宫、输卵管、垂体、下丘脑及卵巢组织的表达水平,PCR扩增黔北麻羊SMAD1基因CDS区,构建pEGFP-N3-SAMD1重组质粒,利用脂质体转染法转染pEGFP-N3-SAMD1重组质粒进入卵巢颗粒细胞,分为超表达SMAD1试验组和pEGFP-N3空载体对照组,通过检测培养基中雌二醇和孕酮的浓度,利用CCK-8法和Annexin V-FITC法检测超表达SMAD1基因对卵巢颗粒细胞增殖、凋亡的影响,qRT-PCR检测超表达SMAD1基因对SAMD1、GnRHR、FSHR、BMP4、TIMP3基因mRNA表达的影响,来探究SMAD1基因对卵巢颗粒细胞的影响。结果表明,SMAD1基因在黔北麻羊各组织中均有表达。组间比较可知,卵巢和下丘脑组织单羔组极显著高表达于多羔组(P<0.01),输卵管组织中单羔组显著高表达于多羔组(P<0.05),其他组织未达到差异显著性(P>0.05)。本研究成功克隆了SMAD1基因CDS序列,未发现突变位点,并将pEGFP-N3-SAMD1重组质粒转染进入卵巢颗粒细胞,转染试验组培养基中E2含量在12、48 h显著高于对照组(P<0.05),P4含量在12 h显著高于对照组(P<0.05);超表达SMAD1基因对细胞增殖在24 h达到显著促进作用(P<0.05),48、72 h达到极显著促进作用(P<0.01),并且发现超表达SMAD1基因对卵巢颗粒细胞的凋亡具有抑制作用,与SMAD1基因对卵巢颗粒细胞增殖具有促进的结果是相符的。SMAD1基因超表达后繁殖相关基因GnRHR、FSHR、BMP4、TIMP3 mRNA的表达极显著降低(P<0.01)。综上表明,SMAD1基因超表达可提高E2、P4的生成,有助于黔北麻羊发情及妊娠的维持,促进细胞增殖,抑制细胞凋亡,也极显著抑制繁殖相关基因mRNA的表达,而这些繁殖相关基因都能够调控卵泡数、卵泡的发育与形成以及排卵。因此,SMAD1基因能够抑制这些基因的表达,致使黔北麻羊单羔组受胎率低,进而降低产羔数,这为产羔性状相关基因的研究提供了理论基础,初步认为SMAD1基因可作为探究影响山羊产羔性状的候选基因。 相似文献
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Dejun Xu Huanshan He Xiaohan Jiang Lulu Yang Dinbang Liu Li Yang Guoxia Geng Jianyong Cheng Huali Chen Rongmao Hua Jiaxin Duan Xiaoya Li Lin Wu Yuan Li Qingwang Li 《Reproduction in domestic animals》2019,54(5):741-749
Steroid hormones are required for normal reproductive function of female. The aim of this study was to investigate the role of Raf‐ERK1/2 on steroid hormone synthesis in bovine ovarian granulosa cells. Immunohistochemistry assay showed that both B‐Raf and C‐Raf were expressed in granulosa cells, theca cells and Sertoli cells. The protein expression of Raf or ERK1/2 was clearly decreased by Raf inhibitor GSK2118436 or ERK1/2 inhibitor SCH772984, respectively (p < 0.05). In addition, western blotting was performed for investigating the crosstalk between Raf and ERK1/2, the data showed that Raf positively regulated ERK1/2, whereas ERK1/2 had a negative feedback effect on Raf. The biosynthesis of oestradiol or testosterone was significantly decreased by treatment with GSK2118436 or SCH772984 (p < 0.05). Conversely, the progesterone biosynthesis was clearly increased by treatment with those inhibitors (p < 0.05). Furthermore, the mRNA expression of STAR, aromatase and CYP17 was blocked by Raf‐ERK1/2 signalling inhibition, which oppositely induced the mRNA expression of CYP11. Together, these findings suggested that Raf‐ERK1/2 signalling pathways mediate steroid hormone synthesis via affecting the expression of steroidogenic enzymes. 相似文献
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通过将小干扰-17β-羟基固醇脱氢酶Ⅳ(si-HSD17B4)基因转染水牛乳腺上皮细胞,检测酪蛋白、甘油三酯含量及脂肪酸相关基因的表达变化,从而揭示干扰HSD17B4基因对水牛乳腺上皮细胞中乳脂和酪蛋白的影响。采用实时荧光定量PCR检测HSD17B4 mRNA在水牛各个组织中的相对表达量。合成3条水牛HSD17B4小干扰RNA (siRNA)和1条对照si-HSD17B4-nc (si-nc),并筛选干扰效果最佳的片段和时间。si-HSD17B4转染水牛乳腺上皮细胞后,通过酪蛋白试剂盒检测酪蛋白的表达情况,通过甘油三酯测定和油红O染色检测甘油三酯含量,通过实时荧光定量PCR检测干扰HSD17B4基因对甘油三酯、脂肪酸合成以及氧化相关基因表达的影响。结果表明,HSD17B4基因在水牛心脏和卵巢中相对高表达,且显著高于其他组织(P<0.05)。3条HSD17B4 siRNA片段均能有效地抑制HSD17B4基因的表达,其中si-HSD17B4-1干扰效果最佳,HSD17B4 mRNA表达量极显著低于对照组(P<0.01);最佳干扰时间为24 h。酪蛋白检测结果显示,干扰HSD17B4基因对水牛乳腺上皮细胞中酪蛋白合成无影响。甘油三酯测定结果显示,干扰HSD17B4基因后细胞中甘油三酯含量上升,差异显著(P<0.05)。油红O染色结果显示,干扰HSD17B4基因后细胞中的脂滴明显增多。实时荧光定量PCR检测结果显示,干扰HSD17B4基因会使FABP3、ACSL1、DGAT1、DGAT2、PLIN2、BTN1A1基因表达量上调,分别上调9.28(P<0.01)、1.36(P<0.05)、1.17(P<0.05)、1.83(P<0.01)、1.60(P<0.01)和2.17(P<0.01)倍;同时使PPARA、SREBP1C、SCD、ACSS2、ACACA、AGPAT6、LPIN1、XDH、ABCD1、ACOX2、EHHADH、SCP2基因表达量下降,分别下调至50.55%(P>0.05)、61.15%(P<0.01)、84.91%(P<0.01)、89.34%(P<0.01)、21.88%(P<0.01)、86.48%(P<0.01)、25.35%(P<0.01)、27.24%(P<0.01)、41.74%(P<0.01)、22.17%(P<0.01)、62.70%(P<0.01)和70.33%(P<0.01)。结果表明,HSD17B4基因在水牛组织中广泛表达;si-HSD17B4高效抑制HSD17B4基因在水牛乳腺上皮细胞中的表达,未检测到干扰HSD17B4基因对乳腺上皮细胞酪蛋白的影响,干扰HSD17B4基因上调了FABP3、ACSL1、DGAT1、DGAT2基因的表达,从而促进甘油三酯的合成,同时降低ABCD1、ACOX2、EHHADH、SCP2基因的表达,减少脂肪酸β-氧化。 相似文献
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Bisphenol S (BPS) is an endocrine‐disrupting chemical with multiple potential mechanisms of action, including as an oestrogen receptor agonist. BPS is increasingly used in plastics and thermal receipts as a substitute for bisphenol A, which has been phased out due to concerns about human health implications. The ability of BPS to alter female reproductive function in mammals has not been widely studied, despite the importance of normal hormone signalling for female reproduction. The aim of this study was to investigate how BPS (in a wide range of doses, including very low doses) affects granulosa cell and theca cell steroid hormone production and cell viability in the bovine. Granulosa cell oestradiol production was stimulated when cells were exposed to 100 μM BPS under basal conditions, but there was no effect of BPS when cells were stimulated with follicle‐stimulating hormone (FSH). Additionally, there was no effect of BPS on granulosa cell progesterone production or cell viability under basal or FSH‐stimulated conditions. BPS did not affect theca cell androstenedione or progesterone production, or theca cell viability under basal or luteinizing hormone‐stimulated conditions. This study suggests for the first time that BPS may alter oestradiol production by bovine granulosa cells, albeit at a concentration that is unlikely to be physiologically relevant. Further studies are needed to determine the effects of BPS on the bovine oocyte and on other functions of follicular cells. 相似文献