种植窗口期人子宫内膜组织中ER、PR及HOXA-11的表达

目的:探讨雌孕激素受体(ER、PR)及同源框基因-11(HOXA-11)在人子宫内膜种植窗口期的表达。方法:采用免疫组化和RT-PCR方法检测ER、PR及HOXA-11在拟行IVF-ET患者排卵后子宫内膜种植窗口期的表达。按IVF-ET后是否妊娠将153例因输卵管因素不孕的患者分为未妊娠组(n=86)和妊娠组(n=67)。结果:免疫组化结果显示PR和HOXA-11在妊娠组腺上皮细胞中的表达均低于未妊娠组(P均<0.001),在间质细胞中的表达均高于未妊娠组(P均<0.001)。RT-PCR结果显示妊娠组子宫内膜ER、PR及HOXA-11 mRNA的相对表达量均高于未妊娠组(P均<0.05)。P水平与腺上皮、间质PR及腺上皮HOXA-11蛋白表达有关(P均<0.05)。结论:种植窗口期内膜腺上皮PR、HOXA-11表达下调和间质细胞PR、HOXA-11表达上调的失败可能是导致子宫内膜容受性下降的原因之一。

HOXA-11基因与不孕及妊娠失败关系的研究

目的 :研究HOXA 11基因与不孕及妊娠失败的关系。方法 :选择 4 1例不明原因不孕症患者及 30例难免流产患者 ,同时选择 2 8例正常未孕者及 18例正常早期妊娠者分别作为对照组 ,留取子宫内膜或蜕膜组织。子宫内膜标本通过组织学检查分为增生期或分泌期。难免流产及正常妊娠组均妊娠 6～ 9周。采用原位杂交方法检测所有子宫内膜或蜕膜组织中的HOXA 11基因mRNA的表达。结果 :整个月经周期子宫内膜腺上皮细胞及间质细胞中均有HOXA 11基因mRNA表达 ,并因月经周期不同而有所波动。HOXA 11基因mRNA在分泌中晚期子宫内膜间质细胞中阳性表达率为 10 0 % ,在增生期子宫内膜间质细胞中的阳性表达率为 6 3.6 % ,差异有显著性 (P <0 .0 5 ) ;在不明原因不孕症患者中HOXA 11基因失去了它在正常子宫内膜表达的周期性变化 ,而且基因表达缺失明显。HOX A 11基因在正常增生期及分泌期子宫内膜腺上皮细胞或间质细胞中的阳性表达率分别为90 .9%、82 .4 %和 6 3.6 %、10 0 % ,在不孕症增生期及分泌期子宫内膜两种细胞的阳性表达率分别为 38.9%、4 7.8%和 2 2 .2 %、39.1% ,两组分别比较 ,差异均有显著性 (P <0 .0 5 ) ;HOXA 11基因在正常早期妊娠蜕膜细胞中持续表达 ,其阳性表达率均为 10 0 % 。

HOXA-10、HOXA-11、Esr2、Pgr在控制性超排卵小鼠围着床期子宫内膜表达的研究

目的:检测同源框基因HOXA-10、HOXA-11以及雌激素受体Esr2、孕激素受体Pgr在控制性超排卵(COH)小鼠围着床期子宫内膜中的表达,探讨COH对子宫内膜容受性的影响。方法:将30只SPF级雌性昆明小鼠随机分为模型组(GnRH-a+HMG+HCG)和对照组(生理盐水),每组15只,造模成功后,计算子宫脏器指数,光学显微镜观察子宫内膜组织学变化;应用RT-PCR和Real-time PCR方法检测小鼠子宫内膜中HOXA-10、HOXA-11、Esr2、Pgr mRNA的表达。结果:模型组围着床期小鼠子宫脏器指数较对照组显著降低(P<0.05),子宫内膜发育延迟,子宫内膜成熟度及厚度降低;模型组小鼠HOXA-10、HOXA-11、Pgr mRNA表达较对照组显著下降(P<0.05),而Esr2 mRNA表达显著升高(P<0.05)。结论:COH引起HOXA-10、HOXA-11、Pgr mRNA表达下降,Esr2mRNA表达升高,致使围着床期内膜准备不足,子宫内膜容受性下降。

HOXA-11基因与女性生殖调节的研究

检测41例不明原因不孕患者(不孕组)及28例正常未孕者(对照组)子宫内膜组织中HOXA-11基因mRNA及雌激素受体(ER)、孕激素受体(PR)蛋白的表达,并通过组织学区分子宫内膜标本期别。结果不孕组中晚分泌期子宫内膜间质细胞中HOXA-11基因阳性表达率明显高于增生期,P<0.05;HOXA-11基因在增生期及分泌期上皮细胞、间质细胞中表达率均明显高于不孕组,P均<0.05。对照组分泌期子宫内膜腺上皮细胞中ER、PR阳性表达率明显低于间质细胞,P<0.05;ER、PR在正常增生期子宫内膜腺上皮细胞中阳性表达率明显高于分泌期,P<0.05。ER、PR在不孕组增生期子宫内膜上皮细胞及间质细胞中阳性表达率明显高于正常组,P均<0.05;分泌期不孕组子宫内膜间质细胞ER、PR阳性表达率明显低于对照组,P均<0.05。提示HOXA-11基因在子宫内膜的表达呈周期性变化,且与子宫内膜“着床窗”期一致,其在子宫内膜表达异常可能是女性不孕原因之一;HOXA-11基因对子宫内膜的作用通过ER、PR调节。

斑马鱼Hoxa-11a基因克隆及序列分析

用PCR法从斑马鱼基因组DNA中扩增了Hoxa-11a基因的完整编码序列,并将其克隆到PCR-TOPO载体.该基因包括两个外显子,长度分别为622bp和233bp,其间的内含子为726bp,共编码284个氨基酸.它与人、鼠、鸡、爪蟾和矛尾鱼Hoxa-11基因氨基酸序列的同源性分别为50.0%、51.3%、53.3%、56.7%和59.7%.除同源异型盒外,外显子 区和内含子中也存在保守序列.外显子 中丙氨酸同聚物与其两侧富含甘氨酸和丝氨酸亚区的积累是不同动物Hoxa-11基因长度变化的主要因素.

矛尾鱼Hoxa-11基因克隆及5'端序列分析(英文)

Ｈｏｘａ－１１基因调节鱼类鳍和四足动物肢的发育，在脊椎动物进化过程中起着重要的作用。利用人和鼠的Ｈｏｘａ－１１基因保守序列设计了两个兼并引物，通过ＰＣＲ扩增到了矛尾鱼的Ｈｏｘａ－１１基因。经克隆和ＤＮＡ序列分析，该片段为２０６５ｂｐ，包括绝大部分外显子 Ⅰ，内含子和部分外显子Ⅱ，编码２０４个氨基酸。其氨基酸序列与人、鼠、鸡、蛙和斑马鱼的同源性分别为６６．０％、６７．６％、７４．４％、７２．８％和５９．７％。外显子Ⅰ的长度从矛尾鱼到蛙、鸡、鼠和人呈现逐步上升趋势，人比矛尾鱼增长了１６％。进一步分析，外显子Ⅰ可分为４个区域：两个高度保守区域，１个中度保守区域和１个可变区域。外显子Ⅰ的长度变化主要是由于可变区域内丙氨酸同聚物以及两侧富含甘氨酸和丝氨酸序列的累积。矛尾鱼只有１个由两个丙氨酸组成的同聚物，蛙有１个由５个连续丙氨酸组成的同聚物，而鸡、鼠和人有３个丙氨酸同聚物，其中最大的同聚物由７个连续丙氨酸组成，而且在同聚物两侧出现了富含甘氨酸和丝氨酸序列。这表明可变区域可能与脊椎动物进化和鳍－肢转换过程中新功能的获得有关。同源异型盒所在的外显子Ⅱ区和剪接位点是高度保守的。内含子的长度变化较大。

两种鱼类Hoxa-11基因片段克隆及5'端序列分析

为了分析脊椎动物从鳍到肢转变过程中基因的系统进化,采用PCR法克隆了斑马鱼和矛尾鱼的Hoxa-11基因片段,测序并进行序列分析.结果显示同源异型盒所在的外显子 区和剪接位点是高度保守的,外显子 区又可分为四个亚区:中度保守区、可变区和两个高度保守区.从鱼到四足动物,Hoxa-11基因的主要变化是可变区的长度梯增且出现富含丙氨酸的区域.此外,在内含子中也发现了两个高度保守的DNA序列,其长度分别为35bp和16bp.

Clinical features, endoscopic polypectomy and STK11 gene mutation in a nine-month-old Peutz-Jeghers syndrome Chinese infant

AIM: To investigate multiple polyps in a Chinese PeutzJeghers syndrome(PJS) infant. METHODS: A nine-month-old PJS infant was admitted to our hospital for recurrent prolapsed rectal polyps for one month. The clinical characteristics, a colonoscopic image, the pathological characteristics of the polyps and X-ray images of the intestinal perforation were obtained. Serine threonine-protein kinase 11(STK11) gene analysis was also performed using a DNA sample from this infant.RESULTS: Here we describe the youngest known Chinese infant with PJS. Five polyps, including a giant polyp of approximately 4 cm × 2 cm in size, were removed from the infant's intestine. Laparotomy was performed to repair a perforation caused by pneumoperitoneum. The pathological results showed that this child had PJS. Molecular analysis of the STK11 gene further revealed a novel frameshift mutation(c.64_65het_del AT) in exon 1 in this PJS infant.CONCLUSION: The appropriate treatment method for multiple polyps in an infant must be carefully considered. Our results also show that the STK11 gene mutation is the primary cause of PJS.

Role of the Pentanucleotide (tttta)_n Polymorphisms of CYP11αGene in the Pathogenesis of Hyperandrogenism in Chinese Women with PolycysticOvary Syndrome

Summary: To determine the (tttta) n repeat polymorphisms at the promoter region of CYP11α gene, and study its linkage to hyperandrogenism of polycystic ovary syndrome (PCOS) in Chinese women, a case-control study was conducted in the Reproductive Medical Center of the Second Affiliated Hospital of Zhengzhou University (Zhengzhou, China). 96 PCOS patients and 78 healthy control women were included. CYP11α (tttta) n repeat-polymorphism genotyping analysis was performed by using polymerase chain reaction (PCR). Serum pituitary hormone and total testosterone levels were measured by ELISA. 4 different CYP11α (tttta) n allelles were identified, corresponding to 4-, 6-, 8-, and 9-repeat-unit alleles. The frequency and distribution of these alleles are 0.16, 0.33, 0.38, and 0.13 respectively in PCOS patients, as compared with 0.20, 0.34, 0.35, and 0.11 respectively in healthy controls. There were no significant differences between these two groups. Moreover, no correlation between the polymorphism of CYP11α gene and serum testosterone level of patients with PCOS and controls was observed. It is concluded that microsatellite polymorphism (tttta) n of gene CYP11α exists in Chinese women and the polymorphism of CYP11α gene does not play an important role in the pathogenesis of Chinese patients with PCOS, especially in patients with hyperandrogenism.

Molecular cloning and expression patterns of the cholesterol side chain cleavage enzyme(CYP11A1) gene during the reproductive cycle in goose(Anas cygnoides)

Background： CYP11A1, a gene belonging to the family 11 of cytochrome P450, encodes a crucial steroidogenic enzyme that catalyzes the initial step in the production of all classes of steroids. Many studies show that CYP11A1 plays a role in ovary function. However, the role of CYP11A1 in goose reproductive cycle remains largely unknown.Results： In this study, full-length CYP11A1 c DNA of Zhedong goose was obtained using reverse transcription polymerase chain reaction（RT-PCR） and rapid amplification of c DNA ends（RACE）. The c DNA consisted of a 96-base pair（bp） 5′untranslated region（UTR）, a 179-bp 3′UTR and a 1509-bp open reading frame. The open reading frame encodes a putative 503 amino acid protein that shares high homology with CYP11A1 of other birds. The amino acid sequence possesses conserved domains of the P450 superfamily, which include the steroid-binding domain and the heme-binding region. Real-time quantitative polymerase chain reaction（q PCR） analysis revealed CYP11A1 mR NA was expressed ubiquitously in every Zhedong goose tissue analyzed, including the heart, liver, glandular stomach,lung, spleen, kidney, intestinum tenue, intestinum crassum, cerebrum, cerebellum, muscle, oviduct, pituitary,hypothalamus and ovary.. The relatively low levels of CYP11A1 m RNA were detected in pituitary, ovary and oviduct tissues at ovulation when compared with levels at oviposition. Interestingly, higher expression was observed in ovary and oviduct tissues during brooding. Lastly, higher m RNA expression of Yangzhou geese was detected during the ovulation period than that of Zhedong geese.Conclusions： Our findings reveal the sequence characterization and expression patterns of the CYP11A1 gene during the goose reproductive cycle, which may provides correlative evidence that CYP11A1 expression is important in reproduction activity.

结直肠癌患者的血清长链非编码RNASNHG5和SNHG11表达及临床意义

目的探究结直肠癌(CRC)患者的血清长链非编码RNA小核仁RNA宿主基因5(lncRNASNHG5,下文简称SNHG5)、SNHG11表达水平及其对CRC的诊断价值。方法选择2015年1月至2018年3月于秦皇岛市第一医院接受CRC根治术治疗的72例CRC患者作为研究对象(设为CRC组),另选择同期于该院就诊的61例结直肠息肉患者设为结直肠息肉组,以及同期于该院体检的59名健康志愿者设为健康对照组。采用实时荧光定量PCR法检测血清SNHG5、SNHG11表达水平,并分析其与CRC患者临床病理特征的关系。采用ROC曲线评估血清SNHG5、SNHG11诊断CRC的效能。采用Kaplan-Meier法分析血清SNHG5、SNHG11表达水平与CRC患者术后无病生存期的关系。结果与健康对照组相比,结直肠息肉组和CRC组的血清SNHG5、SNHG11相对表达量均较高,且CRC组的血清SNHG5、SNHG11相对表达量均高于结直肠息肉组,差异均有统计学意义(P均<0.05)。低分化、TNM分期为Ⅲ期、有浆膜浸润、有淋巴结转移的CRC患者的血清SNHG5、SNHG11相对表达量分别高于中高分化、TNM分期为Ⅱ期、无浆膜浸润、无淋巴结转移的患者,差异均有统计学意义(P均<0.05)。ROC曲线分析结果显示,血清SNHG5和SNHG11联合检测诊断CRC的AUC均大于单项检测,其敏感度和特异度也均高于单项检测。SNHG5低表达组和SNHG11低表达组的无病生存率分别高于SNHG5高表达组和SNHG11高表达组,差异均有统计学意义(P均<0.05)。结论CRC患者的血清SNHG5、SNHG11表达均上调,且均与患者术后无病生存密切相关,两者联合检测诊断CRC的效能较高。

Identification and characterization drought tolerance of gene <i>LEA-D</i>11 soybean (<i>glycine max</i>L. Merr) based on PCR-sequencing

Drought is one of the most damaging abiotic stress. Different plants response differently to drought stress. Abiotic stresses such as drought induced diverse physicological and molecular responses in plants. These responses include changes in gene expression. One of drought tolerance gene is a gene encoding dehydrin which is belongs to the group II or D-11 LEA protein family. LEA-D11 gene produce dehydrin protein which has a role in stabilization of membrane structures and protection of macromolecules in the presence of drought. The aims of the study was to identify and to characterize the LEA-D11 gene in various soybean varieties. This research used seven varieties of soybean: Tanggamus, Nanti, Seulawah, Tidar (drought tolerant), Wilis and Burangrang (drought moderate) and Detam-1 (drought susceptible). DNA genome of those varieties was isolated using the methods from Doyle & Doyle [1]. DNA amplification was conducted using Polymerase Chain Reaction (PCR) with specific primers designed based on GmLEA-D11 gene sequence database from the NCBI. The DNA targets were sequenced using automatic sequencing machine, ABI 3130xl Genetic Analyzer, in Eijkman Institution. The result of this study showed that the sequences of Gm-LEA-D11 gene possessed by drought tolerance varieties (Tanggamus, Nanti, Seulawah and Tidar) and moderately tolerance (Wilis and Burangrang) were similar. However, the sequence of GmLEA-D11 gene detected in the drought susceptible variety Detam-1 was different from the two groups. Similarity between drought tolerance and moderately tolerance indicate that there is not only LEA-D11 gene responsible to drought tolerance but also others. The primer and sequences GmLEA-D11 gene can be used as molecular marker and capable of differentiating between drought susceptible and drought moderate to drought tolerant.

Mutation of the KIT Gene, excluding Exon 11, in Gastrointestinal Stromal Tumors

Gastrointestinal stromal tumors(GISTs)are derived from the interstitial cells of Cajal,and are the most common mesenchymal tumors of the gastrointestinal tract[1].KIT proto-oncogene,receptor tyrosine kinase(KIT),and platelet-derived growth factor receptor alpha(PDGFRA)gene mutations are found in approximately 85%–90% cases of GIST.

New mutation detection system of repackaged λ gt11 DNA containing LacZ gene

Objective: To establish a reformative detection system which has sound ability of providing information on molecular mutagenesis spectrum and the specificity of detection system of repackaged λ phage. Methods: LacZ gene, as mutational target gene and reporter gene, was applied into the detection system. The λ gt11 DNA treated with ENU (1-ethyl-1-nitrosourea) and 9-AA (9-aminoacridine) was repackaged in vitro. The packaged λ phage was then grown in E. coli Y1090 on a selective plate containing X-gel and IPTG. The survival and mutation frequencies were determined by counting the clear-plaque and blue-plaque, and the molecular mutation mechanism was studied by extracting and sequencing the LacZ gene of mutants. Results: The survival of repackaged λ phages treated with 9-AA and ENU apparently decreased in consistent dose-dependence. The mutation frequency of clear-plaque mutants showed a linear dose-related increase. The predominant mutations induced by 9-AA were ± 1 frameshift mutation, and 9-AA induced - 1 frameshift was much more effective than induced +1 frameshift. 9-AA also induced substitutions with transversions more common. ENU-induced mutations were chiefly occurred at G: C sites. Substitutions induced by ENU were mainly G: C→A: T, G: C→C: G and A: T→T: A transversion. Conclusion: Mutation detection system of λgt11 DNA containing LacZ gene is proven better than that of λDNA without LacZ gene. The combination of survival, mutant frequency and sequence spectrum can not only increase the sensitivity and specificity of the new method, but also provide a better understanding of the molecular mechanism of mutation for ultimate extrapolation to risk assessment.

斑马鱼Hoxa-11a基因克隆及序列分析的研究

浙江大学生物技术系薛良义和林凯先对斑马鱼基因组DNA进行研究。他们用PCR法从斑马鱼基因组DNA中扩增了HoXa-11a基因的完整编码序列，并将其克隆到PCR—ToPo载体，该基因包括两个外显子，其长度分别为622bp和233bp，其间的内含子为726bp，可共编码为284个氨基酸，它与人、鼠、鸡、爪蟾和矛尾鱼HoXa-11基因氨基酸序列的同源性分别为50．0％、51．3％、53．3％、56．7％和59．7％除同源异型盒外，

Submicroscopic 11p13 deletion including the elongator acetyltransferase complex subunit 4 gene in a girl with language failure, intellectual disability and congenital malformations: A case report

BACKGROUND We described the main features of an infant diagnosed with facial dysmorphic,language failure,intellectual disability and congenital malformations to strengthen our understanding of the disease.Currently,treatment is only rehabilitation and surgery for cleft lip and palate.CASE SUMMARY The proband was a 2-years-8-months-old girl.Familial history was negative for congenital malformations or intellectual disability.The patient had microcephaly,upward-slanting palpebral fissures,depressed nasal bridge,bulbous nose and bilateral cleft lip and palate.Brain magnetic resonance imaging showed cortical atrophy and band heterotopia.Her motor and intellectual development is delayed.A submicroscopic deletion in 11p13 involving the elongator acetyltransferase complex subunit 4 gene(ELP4)and a loss of heterozygosity in Xq25-q26.3 were detected.CONCLUSION There is no treatment for the ELP4 deletion caused by a submicroscopic 11p3 deletion.We describe a second case of deletion of the ELP4 gene without aniridia,which confirms the association between ELP4 gene with several defects and absence of this ocular defect.Additional clinical data in the deletion of the ELP4 gene as cleft palate,facial dysmorphism,and changes at level brain could be associated to this gene or be part of the effect of the recessives genes involved in the loss of heterozygosity region of Xq25-26.3.

Cloning and Sequence Analysis of SLC11A1 Gene Promoter of Three Cattle Breeds in Xinjiang

[Objective]Solute carrier family 11 member 1（SLC11A1）is a major natural resistance candidate gene,which contributes to defense mechanisms of a variety of intracellular bacteria.The SLC11A1 gene promoter sequence of Xinjiang Brown Cattle,Holstein and Simmental were cloned in the test,and promoter sequence difference was analyzed,in order to provide genetic marker-assisted selection for disease-resistant breeding of dairy cattle.[Method]The Genomic DNA was extracted from whole blood collected from three cattle breeds in Xinjiang,and the 5’ flanking region of SLC11A1 gene was amplified by PCR and sequenced.The sequence was analyzed by bioinformatics software CpGplot,RepeatMasker,TFSEARCH,WWW Signal Scan and dual luciferase assay system.[Result]The SLC11A1 gene promoter sequence of 1 463 bp was confirmed,which had promoter activity.No CpG islands were found on promoter sequence.There were four different sites in SLC11A1 gene promoter sequences between Angus from America and three cattle breeds in Xinjiang.Sequence analysis revealed 12 transcription factor binding sites including Sp1,NF1,RelA-p65,GKLF,and CPBP.In promoter region there was an enhancer region（-734- -740）and two short scattered repetitive elements BOV-tA2,MIR3,as well as repeated DNA element Charlie8.[Conclusion]The SLC11A1 gene promoter sequences of three breeds were obtained,which were different from that of Angus.The paper provided a theoretical basis for further studying the influence of SLC11A1 gene polymorphisms on resistance against intracellular bacteria infection.

基于报告基因法检测白细胞介素-11生物学活性

白细胞介素-11(interleukin-11,IL-11)是一种多功能细胞因子,具有促进造血、免疫调节和组织修复等多种功能,在医学研究和临床治疗中具有重要的应用价值,因此,IL-11生物学活性的准确检测和评估至关重要。现采用的细胞增殖抑制法操作繁琐、耗时较长和易受到白细胞介素-6影响。本研究首先根据IL-11的作用机制(JAK-STAT信号通路),构建可稳定响应IL-11的萤光素酶报告基因表达单克隆细胞株,然后对IL-11的预稀释浓度及稀释梯度、接种细胞量和IL-11孵育时间进行优化,进一步对方法的准确性、精密度、特异性、稳定性以及和药典方法一致性进行全面验证,建立了基于报告基因法检测IL-11生物学活性的新方法。该方法可有效提高检测准确性和灵敏度,并且缩短检测时间,具有一定的应用前景。

Trappc11诱导型基因敲除小鼠模型的构建及鉴定

目的建立转运蛋白颗粒复合物亚基11(Trappc11)诱导型基因敲除小鼠模型。方法和结果在Trappc11基因外显子3~5的两侧分别引入loxP位点,利用CRISPR/Cas9技术获得F0代C57BL/6J小鼠;将通过PCR扩增及测序鉴定阳性的F0代C57BL/6J小鼠与C57BL/6J野生型小鼠交配、繁殖,获得F1代Trappc11flox/+小鼠;再将Trappc11flox/+小鼠与UBC-CreERT2小鼠交配,经过2代繁殖,最终获得Trappc11诱导型全身性基因敲除小鼠模型。结论通过CRISPR/Cas9和Cre-loxP技术成功建立了Trappc11诱导型基因敲除小鼠模型,为揭示Trappc11在多器官系统疾病中的病理生理学作用提供了重要工具。