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https://www.readbyqxmd.com/read/29221447/disruption-of-postnatal-folliculogenesis-and-development-of-ovarian-tumor-in-a-mouse-model-with-aberrant-transforming-growth-factor-beta-signaling
#1
Yang Gao, Xin Fang, David F Vincent, David W Threadgill, Laurent Bartholin, Qinglei Li
BACKGROUND: Transforming growth factor beta (TGFB) superfamily signaling is implicated in the development of sex cord-stromal tumors, a category of poorly defined gonadal tumors. The aim of this study was to determine potential effects of dysregulated TGFB signaling in the ovary using Cre recombinase driven by growth differentiation factor 9 (Gdf9) promoter known to be expressed in oocytes. METHODS: A mouse model containing constitutively active TGFBR1 (TGFBR1CA) using Gdf9-iCre (termed TGFBR1-CAG9Cre) was generated...
December 8, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/29184216/graphene-oxide-enhances-the-specificity-of-the-polymerase-chain-reaction-by-modifying-primer-template-matching
#2
Yuanyuan Wang, Fengbang Wang, Hailin Wang, Maoyong Song
Aiming at improved specificity, nanoparticle assisted polymerase chain reaction (PCR) has been widely studied and shown to improve PCR. However, the reliability and mechanism of this method are still controversial. Here, we demonstrated that 1 μg/mL of graphene oxide (GO) effectively enhances the specificity of the error-prone multi-round PCR. Mismatched primers were designed as interference to produce nonspecific products when the same amounts of matched and mismatched primers were added into semi-multiplex PCR...
November 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29180105/sex-hormone-binding-globulin-b-expression-in-the-rainbow-trout-ovary-prior-to-sex-differentiation
#3
Claudio Pérez, Cristian Araneda, Francisco Estay, Nelson F Díaz, Denise Vizziano-Cantonnet
Salmonids have two sex hormone-binding globulin (Shbg) paralogs. Shbga is mainly expressed in the liver, while Shbgb is secreted by the granulosa cells of the rainbow trout ovary. Coexpression of shbgb and the gonadal aromatase cyp19a1a mRNAs been observed in granulosa cells, suggesting a physiological coordination between Shbgb expression and estrogen synthesis. As estrogens are essential for female sex determination in the fish ovary, we propose that Shbgb participates in early ovarian differentiation, either by binding with estrogen or through another mechanism that remains to be discovered...
November 24, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29164452/identification-of-suh-gene-and-evidence-for-involvement-of-notch-signaling-pathway-on-gonadal-differentiation-of-yellow-river-carp-cyprinus-carpio
#4
Yongfang Jia, Fang Wang, Ruihua Zhang, Tingting Liang, WanWan Zhang, Xiaolin Ji, Qiyan Du, Zhongjie Chang
The suh gene is crucial in Notch pathway and regulates mammalian gonad development. In this study, the sequences of suh1 and suh2 genes in Yellow River carp (Cyprinus carpio) were verified. The partial 5'-flanking regions of suh1 and suh2 were analyzed and several potential transcription factor-binding sites were identified. Phylogenetic, gene structure, and chromosome synteny analyses revealed that carp suh1 and suh2 were orthologs and homologous to vertebrate suh. Investigation of the expression profiles of suh1 and suh2 with qPCR showed that these genes were abundant in the brain and gonad of carp, with suh1 exhibiting sexual dimorphism expression pattern in gonad...
November 21, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/29162857/temporal-expression-pattern-of-genes-during-the-period-of-sex-differentiation-in-human-embryonic-gonads
#5
Linn S Mamsen, Emil H Ernst, Rehannah Borup, Agnete Larsen, Rasmus H Olesen, Erik Ernst, Richard A Anderson, Stine G Kristensen, Claus Y Andersen
The precise timing and sequence of changes in expression of key genes and proteins during human sex-differentiation and onset of steroidogenesis was evaluated by whole-genome expression in 67 first trimester human embryonic and fetal ovaries and testis and confirmed by qPCR and immunohistochemistry (IHC). SRY/SOX9 expression initiated in testis around day 40 pc, followed by initiation of AMH and steroidogenic genes required for androgen production at day 53 pc. In ovaries, gene expression of RSPO1, LIN28, FOXL2, WNT2B, and ETV5, were significantly higher than in testis, whereas GLI1 was significantly higher in testis than ovaries...
November 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29131109/histological-assessment-of-gonads-in-dsd-relevance-for-clinical-management
#6
Johannes A Spoor, J Wolter Oosterhuis, Remko Hersmus, Katharina Biermann, Katja P Wolffenbuttel, Martine Cools, Zainab Kazmi, Syed F Ahmed, Leendert H J Looijenga
Malignant gonadal germ cell tumors, referred to as germ cell cancers (GCC), occur with increased frequency in individuals who have specific types of differences (disorders) of sex development (DSD). Recent population-based studies have identified new environmental and genetic risk factors that have led to a 'genvironment' hypothesis, which may potentially be helpful in risk assessment in DSD-related GCC. In DSD, the malignancy risk is highly heterogeneous, but recent studies allow now to discriminate between high- and low-risk conditions...
November 3, 2017: Sexual Development: Genetics, Molecular Biology, Evolution, Endocrinology, Embryology, and Pathology of Sex Determination and Differentiation
https://www.readbyqxmd.com/read/29060929/microrna-937-inhibits-cell-proliferation-and-metastasis-in-gastric-cancer-cells-by-downregulating-foxl2
#7
Liang Yu, Jun Chen, Yu Liu, Zengfeng Zhang, Shaobin Duan
BACKGROUND: Despite advancement in the treatment, the mortality of gastric cancer remains high. MicroRNAs (miRNAs) are involved in tumor development and progression by regulating signaling pathways. In this study, we investigated the role of miR-937 in gastric cancer cells. METHODS: MiR-937 expression was determined in gastric cancer and matched normal tissues, and human gastric cancer cell lines by quantitative real-time PCR (qRT-PCR). Effects of miR-937 on cell proliferation, migration and invasion were analyzed by MTT and Transwell assays, respectively...
October 13, 2017: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/29044994/characterization-and-expression-pattern-of-r-spondin1-in-cynoglossus-semilaevis
#8
Hailong Li, Wenteng Xu, Ying Zhu, Ning Zhang, Jialu Ma, Ai Sun, Zhongkai Cui, Fengtao Gao, Na Wang, Changwei Shao, Zhongdian Dong, Yangzhen Li
r-spondin1 (rspo1) encodes a secreted protein that is involved in the determination and differentiation of the mammalian ovary. However, little information is yet available for teleosts. Here, we identified a homologue of rspo1 in Cynoglossus semilaevis. The full-length cDNA of rspo1 had a length of 2,703 bp with an open reading frame of 834 bp, encoding a protein with a length of 277 amino-acids. rspo1 expression was detected via qRT-PCR in various tissues, and significant sexually dimorphic expression was observed in the gonads...
October 17, 2017: Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution
https://www.readbyqxmd.com/read/28963671/dimorphic-expression-of-sex-related-genes-in-different-gonadal-development-stages-of-sterlet-acipenser-ruthenus-a-primitive-fish-species
#9
Wei Wang, Hua Zhu, Ying Dong, ZhaoHui Tian, Tian Dong, HongXia Hu, CuiJuan Niu
Molecular mechanism of sex determination and differentiation of sturgeon, a primitive fish species, is extraordinarily important due to the valuable caviar; however, it is still poorly known. The present work aimed to identify the major genes involved in regulating gonadal development of sterlet, a small species of sturgeon, from 13 candidate genes which have been shown to relate to gonadal differentiation and development in other teleost fish. The sex and gonadal development of sterlets were determined by histological observation and levels of sex steroids testosterone (T), 11-ketotestosterone (11-KT), and 17β-estradiol (E2) in serum...
December 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28962924/comparative-transcriptome-analysis-of-ovary-and-testis-reveals-potential-sex-related-genes-and-pathways-in-spotted-knifejaw-oplegnathus-punctatus
#10
Xinxin Du, Bo Wang, Xiumei Liu, Xiaobing Liu, Yan He, Quanqi Zhang, Xubo Wang
The spotted knifejaw (Oplegnathus punctatus) is a newly emerging fishery species inhabiting the Pacific Ocean around Hawaii, China, Japan and Korean Peninsula. Little information on the mechanism of gonadal development and gametogenesis in this species could be used for research and breeding work. In this study, RNA-seq technology was applied to generate a deep-coverage sequencing data of spotted knifejaw testis and ovary. A total of 262,392,754 reads (ovary 133,403,270, testis 128,989,484) were generated from the cDNA library...
December 30, 2017: Gene
https://www.readbyqxmd.com/read/28938467/testis-determination-requires-a-specific-fgfr2-isoform-to-repress-foxl2
#11
Stefan Bagheri-Fam, Anthony D Bird, Liang Zhao, Janelle M Ryan, Meiyun Yong, Dagmar Wilhelm, Peter Koopman, Veraragavan P Eswarakumar, Vincent R Harley
Male sex determination in mammals relies on sex determining region Y-mediated upregulation of sex determining region-box 9 (SOX9) expression in XY gonads, whereas Wnt family member (WNT)/R-spondin 1 signaling and forkhead box L2 (FOXL2) drive female sex determination in XX gonads. Fibroblast growth factor (FGF) 9 signaling ensures sustained SOX9 expression through repression of one of the ovarian pathways (WNT signaling), whereas the significance of FGF-mediated repression of the FOXL2 pathway has not been studied...
November 1, 2017: Endocrinology
https://www.readbyqxmd.com/read/28934256/transcriptome-analysis-of-sex-related-genes-in-the-blood-clam-tegillarca-granosa
#12
COMPARATIVE STUDY
Heng Chen, Guoqiang Xiao, Xueliang Chai, Xingguan Lin, Jun Fang, Shuangshuang Teng
BACKGROUND: Blood clams (Tegillarca granosa) are one of the most commercial shellfish in China and South Asia with wide distribution in Indo-Pacific tropical to temperate estuaries. However, recent data indicate a decline in the germplasm of this species. Furthermore, the molecular mechanisms underpinning reproductive regulation remain unclear and information regarding genetic diversity is limited. Understanding the reproductive biology of shellfish is important in interpreting their embryology development, reproduction and population structure...
2017: PloS One
https://www.readbyqxmd.com/read/28924383/functional-analysis-of-a-novel-foxl2-indel-mutation-in-chinese-families-with-blepharophimosis-ptosis-epicanthus-inversus-syndrome-type-i
#13
Peiwei Chai, Fang Li, Jiayan Fan, Ruobin Jia, He Zhang, Xianqun Fan
Background: Blepharophimosis-ptosis-epicanthus inversus syndrome (BPES) is an autosomal dominant disease with a low incidence rate. Indel mutations in the forkhead box L2 (FOXL2) gene cause two types of BPES that are distinguished by the presence (type I) or absence (type II) of premature ovarian failure (POF). The purpose of this study was to identify a possible deletion in FOXL2 in Chinese families with BPES and to clarify its relationship with POF. Methods: An autosomal dominant Chinese BPES family with four generations was enrolled in this study...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/28923703/transcriptome-analysis-of-three-critical-periods-of-ovarian-development-in-yellow-river-carp-cyprinus-carpio
#14
Yongfang Jia, Ping Nan, Wanwan Zhang, Fang Wang, Ruihua Zhang, Tingting Liang, Xiaolin Ji, Qiyan Du, Zhongjie Chang
Ovary development is a complex process involving numerous genes; the molecular mechanism underlying the ovary development of carp is still unknown. Here we used Illumina HiSeq™ 2500 to explore the transcriptome of undifferentiated gland (PG), juvenile ovary (OJ) and adult ovary (OA) of Yellow River carp (Cyprinus carpio). A total of 58,749 unigenes were obtained, comprising 45,707 known genes and 13,042 new genes. We identified differentially-expressed genes (DEGs) during development and characterized the functional properties of DEGs by comparison with the gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes databases...
January 1, 2018: Theriogenology
https://www.readbyqxmd.com/read/28900034/%C3%AE-catenin-directs-the-transformation-of-testis-sertoli-cells-to-ovarian-granulosa-like-cells-by-inducing-foxl2-expression
#15
Yaqiong Li, Lianjun Zhang, Yuqiong Hu, Min Chen, Feng Han, Yan Qin, Min Chen, Xiuhong Cui, Shuguang Duo, Fuchou Tang, Fei Gao
Sertoli and granulosa cells are two major types of somatic cells in male and female gonads, respectively. Previous studies have shown that Sertoli and granulosa cells are derived from common progenitor cells and that differentiation of these two cell types is regulated by sex differentiation genes. The signaling pathway including the adhesion and transcription factor Ctnnb1 (cadherin-associated protein, β1, also known as β-catenin) regulates differentiation of granulosa cells in the absence of the transcription factor Sry, and overactivation of β-catenin in the presence of Sry leads to granulosa prior to sex determination...
October 27, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28866280/estrogen-alters-gonadal-soma-derived-factor-gsdf-foxl2-expression-levels-in-the-testes-associated-with-testis-ova-differentiation-in-adult-medaka-oryzias-latipes
#16
Tohru Kobayashi, Ayaka Chiba, Tadashi Sato, Taijun Myosho, Jun Yamamoto, Tetsuro Okamura, Yuta Onishi, Mitsuru Sakaizumi, Satoshi Hamaguchi, Taisen Iguchi, Yoshifumi Horie
Testis-ova differentiation in sexually mature male medaka (Oryzias latipes) is easily induced by estrogenic chemicals, indicating that spermatogonia persist in sexual bipotentiality, even in mature testes in medaka. By contrast, the effects of estrogen on testicular somatic cells associated with testis-ova differentiation in medaka remain unclear. In this study, we focused on the dynamics of sex-related genes (Gsdf, Dmrt1, and Foxl2) expressed in Sertoli cells in the mature testes of adult medaka during estrogen-induced testis-ova differentiation...
August 22, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28858381/-microcystic-pattern-should-be-recognized-as-part-of-the-morphologic-spectrum-of-solid-pseudopapillary-neoplasm-of-the-pancreas
#17
Atsushi Abe, Yoshihiro Ohishi, Tetsuyuki Miyazaki, Keigo Ozono, Naoki Mochidome, Kiyoshi Saeki, Masafumi Nakamura, Yoshinao Oda
AIM: Solid pseudopapillary neoplasm (SPN) is an uncommon pancreatic tumor characterized by solid and pseudopapillary growth patterns. We have observed SPNs can show a microcystic pattern (microcystic SPN), which has been poorly described and may be confused with microcystic neoplasms. We conducted the present study to clarify the clinicopathological and immunohistochemical features of microcystic SPNs. METHOD: We examined a consecutive series of 44 SPNs and 10 SCAs, and we classified them into 13 microcystic SPNs (29...
August 31, 2017: Histopathology
https://www.readbyqxmd.com/read/28854867/an-embryonic-and-induced-pluripotent-stem-cell-model-for-ovarian-granulosa-cell-development-and-steroidogenesis
#18
Shane Lipskind, Jennifer S Lindsey, Behzad Gerami-Naini, Jennifer L Eaton, Daniel O'Connell, Adam Kiezun, Joshua W K Ho, Nicholas Ng, Parveen Parasar, Michelle Ng, Michael Nickerson, Utkan Demirci, Richard Maas, Raymond M Anchan
Embryoid bodies (EBs) can serve as a system for evaluating pluripotency, cellular differentiation, and tissue morphogenesis. In this study, we use EBs derived from mouse embryonic stem cells (mESCs) and human amniocyte-derived induced pluripotent stem cells (hAdiPSCs) as a model for ovarian granulosa cell (GC) development and steroidogenic cell commitment. We demonstrated that spontaneously differentiated murine EBs (mEBs) and human EBs (hEBs) displayed ovarian GC markers, such as aromatase (CYP19A1), FOXL2, AMHR2, FSHR, and GJA1...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28852190/mutational-heterogeneity-in-non-serous-ovarian-cancers
#19
Jamie K Teer, Sean Yoder, Anxhela Gjyshi, Santo V Nicosia, Chaomei Zhang, Alvaro N A Monteiro
Epithelial ovarian cancer is a leading cause of death in gynecological cancers. While several systematic studies have revealed the mutation landscape of serous epithelial ovarian cancer, other non-serous subtypes of the disease have not been explored as extensively. Here we conduct exome sequencing of nine non-serous epithelial ovarian tumors (six endometrioid and three mucinous) and their corresponding normal DNA as well as a tumor-only granulosa cell sample. We integrated the exome data with targeted gene sequencing for 1,321 genes selected for their involvement in cancer from additional 28 non-serous ovarian tumors and compared our results to TCGA ovarian serous cystadenocarcinoma and uterine corpus endometrial carcinomas...
August 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28841705/single-nucleotide-polymorphisms-at-mir-146a-196a2-and-their-primary-ovarian-insufficiency-related-target-gene-regulation-in-granulosa-cells
#20
Sung Hwan Cho, Hui Jeong An, Kyung Ah Kim, Jung Jae Ko, Ji Hyang Kim, Young Ran Kim, Eun Hee Ahn, HyungChul Rah, Woo Sik Lee, Nam Keun Kim
MicroRNAs post-transcriptionally regulate gene expression in animals and plants. The aim of this study was to identify new target genes for microRNA polymorphisms (miR-146aC>G and miR-196a2T>C) in primary ovarian insufficiency (POI). We cloned and transfected miR-146aC>G and miR-196a2T>C into human granulosa cells and used microarrays and qPCR-arrays to examine the changes in the messenger RNA expression profile. We show miR-146aC>G and miR-196a2T>C change the mRNA expression patterns in granulosa cell...
2017: PloS One
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