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https://www.readbyqxmd.com/read/29044994/characterization-and-expression-pattern-of-r-spondin1-in-cynoglossus-semilaevis
#1
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
#2
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
#3
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...
September 26, 2017: Gene
https://www.readbyqxmd.com/read/28938467/testis-determination-requires-a-specific-fgfr2-isoform-to-repress-foxl2
#4
Stefan Bagheri-Fam, Anthony D Bird, Liang Zhao, Janelle M Ryan, Meiyun Yong, Dagmar Wilhelm, Peter Koopman, Jacob V Eswarakumar, Vincent R Harley
Male sex determination in mammals relies on SRY-mediated up-regulation of SOX9 expression in XY gonads, whereas WNT/RSPO signalling and FOXL2 drive female sex determination in XX gonads. FGF9-signalling ensures sustained SOX9 expression through repression of one of the ovarian pathways (WNT signalling), while the significance of FGF-mediated repression of the FOXL2 pathway has not been studied. Previously, we demonstrated that FGFR2 is the receptor for FGF9 in the XY gonad. Whether a specific isoform (FGFR2b or FGFR2c) is required was puzzling...
September 11, 2017: Endocrinology
https://www.readbyqxmd.com/read/28934256/transcriptome-analysis-of-sex-related-genes-in-the-blood-clam-tegillarca-granosa
#5
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
#6
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
#7
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...
September 9, 2017: Theriogenology
https://www.readbyqxmd.com/read/28900034/beta-catenin-directs-the-transformation-of-testis-sertoli-cells-to-ovarian-granulosa-like-cells-by-inducing-foxl2-expression
#8
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 the 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, beta 1, also known as β-catenin) regulates differentiation of granulosa cells in the absence of the transcription factor Sry, and over-activation of β-catenin in the presence of Sry leads to granulosa prior to sex determination...
September 12, 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
#9
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
#10
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
#11
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
#12
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
#13
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
https://www.readbyqxmd.com/read/28838139/mutation-of-foxl2-or-cyp19a1a-results-in-female-to-male-sex-reversal-in-xx-nile-tilapia
#14
Xianbo Zhang, Mengru Li, He Ma, Xingyong Liu, Hongjuan Shi, Minghui Li, Deshou Wang
It is well accepted that Forkhead box protein L2 (Foxl2) and aromatase (Cyp19a1; the enzyme responsible for estrogen synthesis) are critical for ovarian development in vertebrates. Knockouts of Foxl2 and Cyp19a1 in goat, mouse, and zebrafish have revealed similar but not identical functions across species. Functional analyses of these two genes in other animals are needed to elucidate their conserved roles in vertebrate sexual development. In this study, we established foxl2 and cyp19a1a mutant lines in Nile tilapia...
August 1, 2017: Endocrinology
https://www.readbyqxmd.com/read/28783897/gonadal-intersex-in-smallmouth-bass-micropterus-dolomieu-from-northern-indiana-with-correlations-to-molecular-biomarkers-and-anthropogenic-chemicals
#15
Ahmed Abdel-Moneim, Daragh Deegan, Jiejun Gao, Chloe De Perre, Jarrod S Doucette, Byron Jenkinson, Linda Lee, Maria S Sepúlveda
Over the past decade, studies have shown that exposure to endocrine disrupting chemicals (EDCs) can cause gonadal intersex in fish. Smallmouth bass (Micropterus dolomieu) males appear to be highly susceptible to developing testicular oocytes (TO), the most prevalent form of gonadal intersex, as observed in various areas across the U.S. In this study, prevalence and severity of TO was quantified for smallmouth bass sampled from the St. Joseph River in northern Indiana, intersex biomarkers were developed, and association between TO prevalence and organic contaminants were explored...
November 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28750654/different-therapeutic-effects-of-cells-derived-from-human-amniotic-membrane-on-premature-ovarian-aging-depend-on-distinct-cellular-biological-characteristics
#16
Chenyue Ding, Hong Li, Yun Wang, Fuxin Wang, Huihua Wu, Rulei Chen, Jinghuan Lv, Wei Wang, Boxian Huang
BACKGROUND: Many reports have shown that various kinds of stem cells have the ability to recover premature ovarian aging (POA) function. Transplantation of human amniotic epithelial cells (hAECs) improves ovarian function damaged by chemotherapy in a mice model. Understanding of how to evaluate the distinct effects of adult stem cells in curing POA and how to choose stem cells in clinical application is lacking. METHODS: To build a different degrees of POA model, mice were administered different doses of cyclophosphamide: light dose (70 mg/kg, 2 weeks), medium dose (70 mg/kg, 1 week; 120 mg/kg, 1 week), and high dose (120 mg/kg, 2 weeks)...
July 27, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28747195/oleic-acid-induces-down-regulation-of-the-granulosa-cell-identity-marker-foxl2-and-up-regulation-of-the-sertoli-cell-marker-sox9-in-bovine-granulosa-cells
#17
Vengala Rao Yenuganti, Jens Vanselow
During negative energy balance, the concentration of different fatty acids, especially of oleic acid (OA) increases in the follicular fluid of cattle. Previously, we showed that OA induced morphological, physiological and molecular changes in cultured bovine granulosa cells. In our present study we analyzed effects of OA on the expression of markers for granulosa and Sertoli cell identity, FOXL2 and SOX9, respectively, in addition to effects on the FOXL2 regulated genes ESR2, FST, PTGS2 and PPARG. The results showed that OA down-regulated FOXL2, ESR2, FST and PPARG but up-regulated PTGS2 and SOX9...
July 26, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28738802/histological-and-transcriptomic-effects-of-17%C3%AE-methyltestosterone-on-zebrafish-gonad-development
#18
Stephanie Ling Jie Lee, Julia A Horsfield, Michael A Black, Kim Rutherford, Amanda Fisher, Neil J Gemmell
BACKGROUND: Sex hormones play important roles in teleost ovarian and testicular development. In zebrafish, ovarian differentiation appears to be dictated by an oocyte-derived signal via Cyp19a1a aromatase-mediated estrogen production. Androgens and aromatase inhibitors can induce female-to-male sex reversal, however, the mechanisms underlying gonadal masculinisation are poorly understood. We used histological analyses together with RNA sequencing to characterise zebrafish gonadal transcriptomes and investigate the effects of 17α-methyltestosterone on gonadal differentiation...
July 24, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28736583/microrna-profiling-of-ovarian-granulosa-cell-tumours-reveals-novel-diagnostic-and-prognostic-markers
#19
Wei-Tzu Cheng, Roseanne Rosario, Anita Muthukaruppan, Michelle K Wilson, Kathryn Payne, Peter C Fong, Andrew N Shelling, Cherie Blenkiron
BACKGROUND: The aim of this study was to explore the clinical utility of microRNAs (miRNAs) as improved markers of ovarian granulosa cell tumours (GCTs) for cancer diagnosis and prognosis prediction. Current histopathological and genetic markers, such as the presence of a FOXL2 gene mutation to distinguish between the two major subtypes are not wholly accurate and as such novel biomarkers are warranted. METHODS: The miRNA expression profiles of five formalin-fixed, paraffin-embedded (FFPE) adult-GCTs and five juvenile-GCTs were assessed using Affymetrix miRNA 3...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/28711355/characterization-of-the-foxl2-proximal-promoter-and-coding-sequence-from-the-common-snapping-turtle-chelydra-serpentina
#20
Lei Guo, Turk Rhen
Sex is determined by temperature during embryogenesis in snapping turtles, Chelydra serpentina. Previous studies in this species show that dihydrotestosterone (DHT) induces ovarian development at temperatures that normally produce males or mixed sex ratios. The feminizing effect of DHT is associated with increased expression of FoxL2, suggesting that androgens regulate transcription of FoxL2. To test this hypothesis, we cloned the proximal promoter (1.6kb) and coding sequence for snapping turtle FoxL2 (tFoxL2) in frame with mCherry to produce a fluorescent reporter...
July 12, 2017: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
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