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https://www.readbyqxmd.com/read/28928950/using-sheep-genomes-from-diverse-u-s-breeds-to-identify-missense-variants-in-genes-affecting-fecundity
#1
Michael P Heaton, Timothy P L Smith, Bradley A Freking, Aspen M Workman, Gary L Bennett, Jacky K Carnahan, Theodore S Kalbfleisch
Background:  Access to sheep genome sequences significantly improves the chances of identifying genes that may influence the health, welfare, and productivity of these animals.   Methods:  A public, searchable DNA sequence resource for U.S. sheep was created with whole genome sequence (WGS) of 96 rams.  The animals shared minimal pedigree relationships and represent nine popular U.S. breeds and a composite line.  The genomes are viewable online with the user-friendly Integrated Genome Viewer environment, and may be used to identify and decode gene variants present in U...
2017: F1000Research
https://www.readbyqxmd.com/read/28903889/gdf9-and-bmp15-expressions-and-fine-structure-changes-during-folliculogenesis-in-polycystic-ovary-syndrome
#2
Meryem İlkay Karagül, Savaş Aktaş, Banu Coşkun Yılmaz, Mustafa Yılmaz, Gülhan Örekiçi Temel
BACKGROUND: Polycystic Ovary Syndrome (PCOS) is the most frequently seen endocrine disorder in women of the reproductive age with the prevalence of about 10%. AIMS: To investigate the efficiency of the growth differentiation factor 9 (GDF9) and bone morphogenetic protein 15 (BMP15) during folliculogenesis in a dehydroepiandrosterone (DHEA)-induced mouse PCOS model. STUDY DESIGN: Animal experimentation. METHODS: Mice were divided into three groups; control, vehicle and PCOS group...
September 13, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/28882328/refining-insulin-concentrations-in-culture-medium-containing-growth-factors-bmp15-and-gdf9-an-in-vitro-study-of-the-effects-on-follicle-development-of-goats
#3
D J Dipaz-Berrocal, N A R Sá, D D Guerreiro, J J H Celestino, J Leiva-Revilla, B G Alves, K A Alves, R R Santos, F W S Cibin, A P R Rodrigues, J R Figueiredo
The aim of the present study was to investigate the influence of two insulin concentrations (10ng/mL and 10μg/mL) combined or in the absence of BMP15 and/or GDF9, on the in vitro survival and development of preantral follicles of goat ovarian tissue. Ovarian slices from the same goat ovary pair were randomly assigned to a non-cultured control treatment or to be in vitro cultured for 1 or 7days in α-MEM containing 10ng/mL (Low) or 10μg/mL (High) of insulin in the absence or presence of BMP15 and/or GDF9. With the low insulin treatment, there was a greater percentage of normal follicles than with the high insulin treatment...
October 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28874516/regulation-of-amh-by-oocyte-specific-growth-factors-in-human-primary-cumulus-cells
#4
Scott Convissar, Marah Armouti, Michelle Fierro, Nicola Winston, Humberto Scoccia, A Musa Zamah, Carlos Stocco
The regulation of AMH production by follicular cells is poorly understood. The purpose of this study was to determine the role of the oocyte-secreted factors, growth differentiation factor 9 (GDF9) and bone morphogenetic protein 15 (BMP15), on AMH production in primary human cumulus cells. Cumulus cells from IVF patients were cultured with a combination of GDF9, BMP15, recombinant FSH, and specific signaling inhibitors. Stimulation with GDF9 or BMP15 separately had no significant effect on AMH mRNA levels. In contrast, simultaneous stimulation with GDF9 and BMP15 (G+B) resulted in a significant increase in AMH mRNA expression...
September 5, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28860512/regulation-of-androgen-receptor-signaling-by-ubiquitination-during-folliculogenesis-and-its-possible-dysregulation-in-polycystic-ovarian-syndrome
#5
Jung Jin Lim, Patricia D A Lima, Reza Salehi, Dong Ryul Lee, Benjamin K Tsang
Although chronic hyperandrogenism suppresses antral follicular development, a phenomenon often observed in polycystic ovarian syndrome (PCOS), whether and how deregulation of androgen receptor (AR) signaling is involved, is not well understood. In the present study, we examined the role of ring finger protein 6 (RNF6) in AR ubiquitination and the possible dysregulation in the expression and actions of growth differentiation factor 9 (GDF9) and kit-ligand (Kitlg) in a chronic androgenized PCOS rat model. 5α-dihydrotestosterone (DHT) treatment in vivo inhibited antral follicle growth, a response mediated through increased RNF6 content, suppressed K63- but increased K48-linked AR ubiquitination as well as the mRNA expression and content of soluble KIT-L (sKitlg) and content of GDF9...
August 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28856758/the-gonadal-soma-controls-ovarian-follicle-proliferation-through-gsdf-in-zebrafish
#6
Yi-Lin Yan, Thomas Desvignes, Ruth BreMiller, Catherine Wilson, Danielle Dillon, Samantha High, Bruce Draper, Charles Loren Buck, John Postlethwait
BACKGROUND: Aberrant signaling between germ cells and somatic cells can lead to reproductive disease and depends on diffusible signals, including TGFB-family proteins. The TGFB-family protein Gsdf (gonadal soma derived factor) controls sex determination in some fish and is a candidate for mediating germ cell/soma signaling. RESULTS: Zebrafish expressed gsdf in somatic cells of bipotential gonads and expression continued in ovarian granulosa cells and testicular Sertoli cells...
August 30, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28837789/repertoire-of-bone-morphogenetic-proteins-and-growth-differentiation-factors-in-ovary-of-the-indian-wall-lizard-hemidactylus-flaviviridis-with-emphasis-on-differential-expression-and-gonadotropic-regulation-of-bmp15-and-gdf9
#7
Mamta Tripathy, Manisha Priyam, Umesh Rai
Analysis of ovarian transcriptome of Indian wall lizard demonstrates the existence of several bone morphogenetic proteins (bmp1, 2, 3, 3b, 7, 8, 15) and growth/differentiation factors (gdf5, 9) for the first time in reptilian ovary. The characterization of putative full-length/partial protein sequences of BMPs (BMP2, 3, 3b, 7, 15) and GDF9 showed high homology of their TGF-β domain with that of other vertebrates while BMP1 bore homology to zinc-dependent metalloprotease. Phylogenetic analyses showed clustering of BMPs and GDF9 from wall lizards with that of squamates lying in close proximity to chelonia, crocodilia and aves...
August 21, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28762037/genetic-polymorphism-of-growth-differentiation-factor-9-gdf9-gene-related-to-fecundity-in-two-egyptian-sheep-breeds
#8
Zaki A El Fiky, Gamal M Hassan, Mohamed I Nassar
PURPOSE: This study explores polymorphisms in the growth differentiation factor 9 (GDF9) gene (exon 1) with respect to fertility in Egyptian sheep. METHODS: Blood samples were collected, and genomic DNA was extracted from 24 Saidi and 13 Ossimi ewes. A 710 bp portion of the GDF9 gene, was amplified using specific primers, and the sequence was analyzed to clarify the phylogenetic relationship of Egyptian breed sheep. In addition, the PCR-RFLP method using Pst1 or Msp1 restriction enzymes was used to mask polymorphisms of partial exon 1 of GDF9 gene to establish molecular markers for twinning...
July 31, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28738802/histological-and-transcriptomic-effects-of-17%C3%AE-methyltestosterone-on-zebrafish-gonad-development
#9
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/28738285/molecular-assessment-characterization-and-differentiation-of-theca-stem-cells-imply-the-presence-of-mesenchymal-and-pluripotent-stem-cells-in-sheep-ovarian-theca-layer
#10
Samane Adib, Mojtaba Rezazadeh Valojerdi
The ability of ovarian theca stem cells to differentiate into oocyte and theca cells may lead to a major advancement in reproductive biology and infertility treatments. However, there is little information about function, growth and differentiation potential of these immature cells. In this study adult sheep theca stem cells (TSCs) characteristics, and differentiation potential into osteocyte-like cells (OSLCs), adipocyte-like cells (ALCs), theca progenitor-like cells (TPCs), and oocyte-like cells (OLCs) were investigated...
July 8, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28736154/retinoic-acid-induces-differentiation-of-buffalo-bubalus-bubalis-embryonic-stem-cells-into-germ-cells
#11
Syed Mohmad Shah, Suresh Kumar Singla, Prabhat Palta, Radhey Sham Manik, Manmohan Singh Chauhan
Development of precise and reproducible culture system for in vitro differentiation of embryonic stem (ES) cells into germ cells counts as a major leap forward for understanding not only the remarkable process of gametogenesis, otherwise obscured by limited availability of precursor primordial germ cells (PGCs), but in finally treating the catastrophic infertility. Taking into account the significant role of retinoic acid (RA) during in vivo gametogenesis, we designed the present study to investigate the effects of its stimulation on directing the differentiation of ES cells into germ cells...
August 16, 2017: Gene
https://www.readbyqxmd.com/read/28733348/molecular-forms-of-ruminant-bmp15-and-gdf9-and-putative-interactions-with-receptors
#12
Derek A Heath, Janet Pitman, Kenneth P McNatty
Bone morphogenetic factor 15 (BMP15) and growth differentiation factor 9 (GDF9) are oocyte-secreted factors with demonstrable effects on ovarian follicular development and ovulation-rate. However, the molecular forms of BMP15 and GDF9 produced by oocytes remains unclear. The aims herein, using Western blotting (WB) procedures with specific monoclonal antibodies (mabs), were to identify the molecular forms of BMP15 and GDF9 synthesised and secreted by isolated ovine (o) and bovine (b) oocytes in vitro. The mabs were known to recognise the biological forms of BMP15 or GDF9 since they had previously been shown to inhibit their bioactivities in vitro and in vivo...
July 21, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28693630/developmental-competence-of-dromedary-camel-camelus-dromedarius-oocytes-selected-using-brilliant-cresyl-blue-staining
#13
Mohamed Fathi, Mohamed Ashry, Ali Salama, Magdy R Badr
The objectives of the present studies were to investigate the developmental capacity of dromedary camel oocytes selected by brilliant cresyl blue (BCB) staining and to investigate the expression of select transcripts in germinal vesicle (GV) stage oocytes. These transcripts included BMP15 and GDF9 as important transcripts for folliculogenesis and oocyte development, Zar1 and Mater as maternal transcripts required for embryonic development, Cyclin B1 and CDK1 as cell cycle regulators and Oct4 and STAT3 as transcription factors...
July 11, 2017: Zygote: the Biology of Gametes and Early Embryos
https://www.readbyqxmd.com/read/28692815/efficient-generation-of-goats-with-defined-point-mutation-i397v-in-gdf9-through-crispr-cas9
#14
Yiyuan Niu, Xiaoe Zhao, Jiankui Zhou, Yan Li, Yu Huang, Bei Cai, Yutai Liu, Qiang Ding, Shiwei Zhou, Jin Zhao, Guangxian Zhou, Baohua Ma, Xingxu Huang, Xiaolong Wang, Yulin Chen
The recent emergence of the clustered regularly interspaced short palindromic repeat (CRISPR)/CRISPR-associated (Cas) 9 system has attracted significant attention for its potential to improve traits of agricultural importance. However, most applications in livestock species to date have depended on aberrant DNA repair to generate frameshifting indels. Whether this genomic engineering technique involving homology-dependent repair (HDR) can be used to introduce defined point mutations has been less explored. Previously, we reported a G→A point mutation (g...
July 11, 2017: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/28674231/molecular-characterization-and-expression-of-the-gdf9-gene-in-new-zealand-white-rabbits
#15
Caixia Sun, Shuyu Xie, Tao Huang, Wei Zhang, Ansi Wang, Dan Wang, Ming Li, Guirong Sun
Growth differentiation factor 9 (GDF9) has been shown to be involved in regulating follicular development and reproduction in many mammalian species. However, related information about the effect of the GDF9 gene on reproductive traits of New Zealand white rabbits was rarely reported. In this study, rabbits were distributed into two groups (poor and prolific offspring productions) and cloning and quantitative real-time PCR (qPCR) were employed to characterize the rabbit GDF9 gene. By cloning, 2515-bp genomic DNA and 1359-bp cDNA sequences were obtained...
June 2017: Journal of Genetics
https://www.readbyqxmd.com/read/28669364/expression-of-markers-for-germ-cells-and-oocytes-in-cow-dermal-fibroblast-treated-with-5-azacytidine-and-cultured-in-differentiation-medium-containing-bmp2-bmp4-or-follicular-fluid
#16
José Jackson do Nascimento Costa, Glaucinete Borges de Souza, Joyla Maria Pires Bernardo, Regislane Pinto Ribeiro, José Renato de Souza Passos, Francisco Taiã Gomes Bezerra, Márcia Viviane Alves Saraiva, José Roberto Viana Silva
This study aims to investigate the effect 5-azacytidine (5-Aza) during induction of pluripotency in bovine fibroblasts and to evaluate the effects of BMP2, BMP4 or follicular fluid in the differentiation of reprogrammed fibroblasts in primordial germ cells and oocytes. It also analysis the mRNA levels for OCT4, NANOG, REX, SOX2, VASA, DAZL, cKIT, SCP3, ZPA and GDF9 after culturing 5-Aza treated fibroblasts in the different tested medium. Dermal fibroblasts were cultured and exposed to 0.5, 1.0 or 2.0 μM of 5-Aza for 18 h, 36 h or 72 h...
June 2017: Zygote: the Biology of Gametes and Early Embryos
https://www.readbyqxmd.com/read/28667646/qpcr-and-hrm-based-diagnosis-of-snps-on-growth-differentiation-factor-9-gdf9-a-gene-associated-with-sheep-ovis-aries-prolificacy
#17
Raquel Anahí Escobar-Chaparro, Gabriel Guillén, Luis Uribe Espejo-Galicia, Víctor Manuel Meza-Villalvazo, Julián Mario Peña-Castro, José Abad-Zavaleta
Prolificacy is a desirable trait for genetic improvement of sheep flocks, since it holds the potential to improve productivity. Animals carrying single-nucleotide polymorphisms (SNPs) in genes associated with this trait can be identified and employed to increase prolificacy in flocks. In this study, we report a diagnostic method based on quantitative PCR and high-resolution melting curves to detect different SNPs in the prolificacy-associated gene growth differentiation factor 9 (GDF9). The diagnostic method was validated using artificial sequences representing known SNPs in GDF9, then applied to a real flock comprising four breeds and admixed animals (n = 306)...
July 2017: 3 Biotech
https://www.readbyqxmd.com/read/28619824/setd1b-encoding-a-histone-3-lysine-4-methyltransferase-is-a-maternal-effect-gene-required-for-the-oogenic-gene-expression-program
#18
David Brici, Qinyu Zhang, Susanne Reinhardt, Andreas Dahl, Hella Hartmann, Kerstin Schmidt, Neha Goveas, Jiahao Huang, Lenka Gahurova, Gavin Kelsey, Konstantinos Anastassiadis, A Francis Stewart, Andrea Kranz
Germ cell development involves major reprogramming of the epigenome to prime the zygote for totipotency. Histone 3 lysine 4 (H3K4) methylations are universal epigenetic marks mediated in mammals by six H3K4 methyltransferases related to fly Trithorax, including two yeast Set1 orthologs: Setd1a and Setd1b. Whereas Setd1a plays no role in oogenesis, we report that Setd1b deficiency causes female sterility in mice. Oocyte-specific Gdf9-iCre conditional knockout (Setd1b(Gdf9) cKO) ovaries develop through all stages; however, follicular loss accumulated with age and unfertilized metaphase II (MII) oocytes exhibited irregularities of the zona pellucida and meiotic spindle...
July 15, 2017: Development
https://www.readbyqxmd.com/read/28604658/in-vitro-differentiation-of-human-embryonic-stem-cells-into-ovarian-follicle-like-cells
#19
Dajung Jung, Jie Xiong, Min Ye, Xunsi Qin, Lin Li, Shunfeng Cheng, Mengyuan Luo, Jia Peng, Ji Dong, Fuchou Tang, Wei Shen, Martin M Matzuk, Kehkooi Kee
Understanding the unique mechanisms of human oogenesis necessitates the development of an in vitro system of stem cell differentiation into oocytes. Specialized cell types and organoids have been derived from human pluripotent stem cells in vitro, but generating a human ovarian follicle remains a challenge. Here we report that human embryonic stem cells can be induced to differentiate into ovarian follicle-like cells (FLCs) in vitro. First, we find that two RNA-binding proteins specifically expressed in germ cells, DAZL and BOULE, regulate the exit from pluripotency and entry into meiosis...
June 12, 2017: Nature Communications
https://www.readbyqxmd.com/read/28601148/leptin-supplementation-in%C3%A2-vitro-improved-developmental-competence-of-buffalo-oocytes-and-embryos
#20
Bibhudatta S K Panda, Sriti Pandey, Anjali Somal, Mehtab S Parmar, Irfan A Bhat, Indu Baiju, Mukesh K Bharti, G Sai Kumar, Vikash Chandra, G Taru Sharma
The aim of the present study was to determine potential role of leptin on in vitro developmental competence of buffalo oocytes and embryos. Slaughterhouse derived culture grade buffalo cumulus oocyte complexes (COCs) were matured in vitro (IVM) with leptin (10 ng/ml) or without leptin (control). In each experiment, a pool of matured COCs was used for further in vitro embryo production and another pool of COCs was used for cumulus cells and mature oocytes isolation to study the relative mRNA expression of developmentally important genes...
August 2017: Theriogenology
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