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Journal of Reproduction and Development

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https://www.readbyqxmd.com/read/29780056/potential-roles-of-the-poly-a-binding-proteins-in-translational-regulation-during-spermatogenesis
#1
Saffet Ozturk, Fatma Uysal
Spermatogenesis is briefly defined as the production of mature spermatozoa from spermatogonial stem cells at the end of a strictly regulated process. It is well known that, to a large extent, transcriptional activity ceases at mid-spermiogenesis. Several mRNAs transcribed during early stages of spermatogenesis are stored as ribonucleoproteins (RNPs). During the later stages, translational control of these mRNAs is mainly carried out in a time dependent-manner by poly(A)-binding proteins (PABPs) in cooperation with other RNA-binding proteins and translation-related factors...
May 18, 2018: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/29731480/glutathione-treatment-of-japanese-black-bull-sperm-prior-to-intracytoplasmic-sperm-injection-promotes-embryo-development
#2
Toshinori Oikawa, Tomoko Itahashi, Risa Yajima, Takashi Numabe
Intracytoplasmic sperm injection (ICSI) was expected to enable more efficient use of sperm from sires with preferable genetic traits and result in a generation containing a larger number of offspring with superior genetic characteristics in livestock. However, the efficiency of the early development of embryos produced by ICSI is still far from satisfactory in cattle. The present study aimed to investigate the effects of the treatment of cryopreserved sperm with glutathione (GSH) on the early development of embryos produced by ICSI in Japanese Black cattle...
May 7, 2018: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/29731504/application-of-auxin-inducible-degron-technology-to-mouse-oocyte-activation-with-plc%C3%AE
#3
Kento Miura, Shogo Matoba, Narumi Ogonuki, Takafumi Namiki, Junya Ito, Naomi Kashiwazaki, Atsuo Ogura
In mammals, spermatozoa activate oocytes by triggering a series of intracellular Ca2+ oscillations with phospholipase C zeta (PLCζ), a sperm-borne oocyte-activating factor. Because the introduction of PLCζ alone can induce oocyte activation, it might be a promising reagent for assisted reproductive technologies. To test this possibility, we injected human PLCζ (hPLCζ) mRNA into mouse oocytes at different concentrations. We observed the oocyte activation and subsequent embryonic development. Efficient oocyte activation and embryonic development to the blastocyst stage was achieved only with a limited range of mRNA concentrations (0...
May 5, 2018: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/29731491/oocyte-specific-gene-oog1-suppresses-the-expression-of-spermatogenesis-specific-genes-in-oocytes
#4
Shinnosuke Honda, Yuka Miki, Yuya Miyamoto, Yu Kawahara, Satoshi Tsukamoto, Hiroshi Imai, Naojiro Minami
Oog1, an oocyte-specific gene that encodes a protein of 425 amino acids, is present in five copies on mouse chromosomes 4 and 12. In mouse oocytes, Oog1 mRNA expression begins at embryonic day 15.5 and almost disappears by the late two-cell stage. Meanwhile, OOG1 protein is detectable in oocytes in ovarian cysts and disappears by the four-cell stage; the protein is transported to the nucleus in late one-cell to early two-cell stage embryos. In this study, we examined the role of Oog1 during oogenesis in mice...
May 3, 2018: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/29710018/heat-stress-affects-prostaglandin-synthesis-in-bovine-endometrial-cells
#5
Shunsuke Sakai, Natsumi Hagihara, Mariko Kuse, Koji Kimura, Kiyoshi Okuda
Heat stress (HS) negatively affects reproduction in cattle; however, its effect on endocrine function in bovine endometrial cells remains unclear. In this study, we examined the effects of HS on the production of prostaglandin (PG)E2 and PGF2α in the cultured bovine endometrial epithelial and stromal cells separately. To evaluate the effect of HS on endocrine function, the cells were cultured at 38.5°C (control) or 40.5°C (HS). After treatment, PGE2 and PGF2α levels were measured via enzyme immunoassay (EIA) and mRNA expressions of enzymes involved in PG synthesis were examined via quantitative reverse transcription polymerase chain reaction (RT-PCR)...
April 30, 2018: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/29695651/degradation-of-maternal-factors-during-preimplantation-embryonic-development
#6
Satoshi Tsukamoto, Takayuki Tatsumi
During oogenesis, oocytes accumulate a large set of proteins derived from the maternal genome. These proteins, known as maternal proteins, are not only required for oocyte maturation and fertilization, but also implicated in subsequent embryonic development. However, most maternal proteins are degraded and their amino acid components are utilized for newly synthesized proteins from the embryonic genome. This process is known as the oocyte-to-embryo transition; because it occurs over a short period, mechanisms involving massive degradation of maternal proteins have been proposed...
April 26, 2018: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/29695650/suberoylanilide-hydroxamic-acid-during-in-vitro-culture-improves-development-of-dog-pig-interspecies-cloned-embryos-but-not-dog-cloned-embryos
#7
Min Jung Kim, Hyun Ju Oh, Yoo Bin Choi, Sanghoon Lee, Erif Maha Nugraha Setyawan, Seok Hee Lee, Seung Hoon Lee, Tai Young Hur, Byeong Chun Lee
This study was conducted to investigate whether the treatment of dog to pig interspecies somatic cell nuclear transfer (iSCNT) embryos with a histone deacetylase inhibitor, to improve nuclear reprogramming, can be applied to dog SCNT embryos. The dog to pig iSCNT embryos were cultured in fresh porcine zygote medium-5 (PZM-5) with 0, 1, or 10 µM suberoylanilide hydroxamic acid (SAHA) for 6 h, then transferred to PZM-5 without SAHA. Although there were no significant differences in cleavage rates, the rates of 5-8-cell stage embryo development were significantly higher in the 10 µM group (19...
April 26, 2018: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/29657241/expression-dynamics-of-self-renewal-factors-for-spermatogonial-stem-cells-in-the-mouse-testis
#8
Mizuki Sakai, Kaito Masaki, Shota Aiba, Masaaki Tone, Seiji Takashima
Glial cell line-derived neurotrophic factor (GDNF) and fibroblast growth factor 2 (FGF2) are bona fide self-renewal factors for spermatogonial stem cells (SSCs). Although GDNF is indispensable for the maintenance of SSCs, the role of FGF2 in the testis remains to be elucidated. To clarify this, the expression dynamics and regulatory mechanisms of Fgf2 and Gdnf in the mouse testes were analyzed. It is well known that Sertoli cells express Gdnf, and its receptor is expressed in a subset of undifferentiated spermatogonia, including SSCs...
April 16, 2018: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/29657233/reproductive-technologies-for-the-generation-and-maintenance-of-valuable-animal-strains
#9
Takehito Kaneko
Many types of mutant and genetically engineered strains have been produced in various animal species. Their numbers have dramatically increased in recent years, with new strains being rapidly produced using genome editing techniques. In the rat, it has been difficult to produce knockout and knock-in strains because the establishment of stem cells has been insufficient. However, a large number of knockout and knock-in strains can currently be produced using genome editing techniques, including zinc-finger nuclease (ZFN), transcription activator-like effector nuclease (TALEN), and the clustered regularly interspaced short palindromic repeats (CRISPR) and CRISPR-associated protein 9 (Cas9) system...
April 14, 2018: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/29657232/crispr-cas9-mediated-knock-in-of-the-murine-y-chromosomal-sry-gene
#10
Kenya Imaimatsu, Wataru Fujii, Ryuji Hiramatsu, Kento Miura, Masamichi Kurohmaru, Yoshiakira Kanai
Mammalian zygote-mediated genome editing via the clustered regularly interspaced short palindromic repeats/CRISPR-associated endonuclease 9 (CRISPR/Cas9) system is widely used to generate genome-modified animals. This system allows for the production of loss-of-function mutations in various Y chromosome genes, including Sry, in mice. Here, we report the establishment of a CRISPR-Cas9-mediated knock-in line of Flag-tag sequences into the Sry locus at the C-terminal coding end of the Y chromosome (YSry-flag )...
April 14, 2018: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/29618676/mitochondrial-dysfunction-in-cumulus-oocyte-complexes-increases-cell-free-mitochondrial-dna
#11
Kazuki Kansaku, Yasuhisa Munakata, Nobuhiko Itami, Koumei Shirasuna, Takehito Kuwayama, Hisataka Iwata
This study examined the concentration of cell-free mitochondrial DNA (cf-mtDNA) in porcine follicular fluid (FF) and explored whether the cfDNA level in the culture medium could reflect mitochondrial dysfunction in cumulus cell-oocyte complexes (COCs). cfDNA concentration was higher in the fluid of small-sized follicles, compared to that in larger follicles. The length of cfDNA ranged from short (152 bp) to long (1,914 bp) mtDNA in FF, detected by polymerase chain reaction (PCR). cfDNA concentration in FF significantly correlated with the mtDNA copy number in FF but not with the number of one-copy gene (nuclear DNA) in FF...
April 3, 2018: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/29576589/contributions-of-ube2c-and-ube2s-to-meiotic-progression-of-porcine-oocytes
#12
Yoshie A Fujioka, Asuka Onuma, Wataru Fujii, Koji Sugiura, Kunihiko Naito
Vertebrate oocytes arrested at the first meiotic prophase must proceed to the second meiotic metaphase (MII) before fertilization. This meiotic process requires the precise control of protein degradation. Part of the protein degradation in oocytes is controlled by members of the ubiquitin-conjugating enzyme family, UBE2C and UBE2S, which are known to participate in mono-ubiquitination and poly-ubiquitination, respectively. Although UBE2 enzymes have been well studied in mitosis, their contribution to mammalian oocyte meiosis is relatively unknown and has been studied only in mice...
March 23, 2018: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/29553057/mitochondrial-related-consequences-of-heat-stress-exposure-during-bovine-oocyte-maturation-persist-in-early-embryo-development
#13
Rebecca R Payton, Louisa A Rispoli, Kimberly A Nagle, Cedric Gondro, Arnold M Saxton, Brynn H Voy, J Lannett Edwards
Hyperthermia during estrus has direct consequences on the maturing oocyte that carries over to the resultant embryo to compromise its ability to continue in development. Because early embryonic development is reliant upon maternal transcripts and other ooplasmic components, we examined impact of heat stress on bovine oocyte transcripts using microarray. Oocytes were matured at 38.5ºC for 24 h or 41.0ºC for the first 12 h of in vitro maturation; 38.5ºC thereafter. Transcriptome profile was performed on total (adenylated + deadenylated) RNA and polyadenylated mRNA populations...
March 18, 2018: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/29515057/reconsidering-the-roles-of-endogenous-estrogens-and-xenoestrogens-the-membrane-estradiol-receptor-g-protein-coupled-receptor-30-gpr30-mediates-the-effects-of-various-estrogens
#14
Hiroya Kadokawa, Kiran Pandey, Kereilwe Onalenna, Asrafun Nahar
Estrone (E1) and estriol (E3) are considered "weak" estrogens, which exert suppressive effects through estrogen receptors α and β. However, recent studies have demonstrated that E1 and E3, as well as estradiol (E2), suppress gonadotropin-releasing hormone-induced luteinizing hormone secretion from bovine gonadotrophs via G-protein-coupled receptor 30, which is expressed in various reproductive organs. Currently, there is a lack of fundamental knowledge regarding E1 and E3, including their blood levels...
March 6, 2018: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/29515056/influence-of-fetal-leydig-cells-on-the-development-of-adult-leydig-cell-population-in-rats
#15
Dong-Mei Su, Ying Feng, Lin Wang, Yi-Lun Wu, Ren-Shan Ge, Xue Ma
Leydig cells are the main endogenous testosterone synthesis cells in the body. Testosterone is an essential hormone in males that affects metabolism, emotion, and pubertal development. However, little is known about the development of Leydig cells and relationship between fetal Leydig cells (FLCs) and adult Leydig cells (ALCs). The aims of this study were to investigate the effect of (FLCs) on ALC development. Our study showed that FLCs in neonatal rat testis can be eliminated by 100 mg/kg ethane dimethane sulfonate (EDS) treatment without affecting the health of newborn rats...
March 6, 2018: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/29503399/effect-of-pre-in-vitro-maturation-with-camp-modulators-on-the-acquisition-of-oocyte-developmental-competence-in-cattle
#16
Satoshi Sugimura, Tadayuki Yamanouchi, Maria Grazia Palmerini, Yutaka Hashiyada, Kei Imai, Robert B Gilchrist
The administration of follicle-stimulating hormone (FSH) prior to oocyte retrieval improves oocyte developmental competence. During bovine embryo production in vitro, however, oocytes are typically derived from FSH-unprimed animals. In the current study, we examined the effect of pre-in vitro maturation (IVM) with cAMP modulators, also known as the second messengers of FSH, on the developmental competence of oocytes derived from small antral follicles (2-4 mm) of FSH-unprimed animals. Pre-IVM with N6,2'-O-dibutyryladenosine 3',5'-cyclicmonophosphate (dbcAMP) and 3-isobutyl-1-methylxanthine (IBMX) for 2 h improved the blastocyst formation in oocytes stimulated by FSH or amphiregulin (AREG)...
March 2, 2018: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/29503398/peroxiredoxin-as-a-functional-endogenous-antioxidant-enzyme-in-pronuclei-of-mouse-zygotes
#17
Kohtaro Morita, Mikiko Tokoro, Yuki Hatanaka, Chika Higuchi, Haruka Ikegami, Kouhei Nagai, Masayuki Anzai, Hiromi Kato, Tasuku Mitani, Yoshitomo Taguchi, Kazuo Yamagata, Yoshihiko Hosoi, Kei Miyamoto, Kazuya Matsumoto
Antioxidant mechanisms to adequately moderate levels of endogenous reactive oxygen species (ROS) are important for oocytes and embryos to obtain and maintain developmental competence, respectively. Immediately after fertilization, ROS levels in zygotes are elevated but the antioxidant mechanisms during the maternal-to-zygotic transition (MZT) are not well understood. First, we identified peroxiredoxin 1 (PRDX1) and PRDX2 by proteomics analysis as two of the most abundant endogenous antioxidant enzymes eliminating hydrogen peroxide (H2 O2 )...
April 13, 2018: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/29459533/macromolecular-crowded-conditions-strengthen-contacts-between-mouse-oocytes-and-companion-granulosa-cells-during-in-vitro-growth
#18
Shizuka Mizumachi, Taiki Aritomi, Kuniaki Sasaki, Kazuei Matsubara, Yuji Hirao
Macromolecular crowded culture medium formed by addition of polyvinylpyrrolidone (PVP; molecular weight = 360 000), positively influences the viability, growth, and development of bovine oocytes. Owing to its apparently various effects, uncovering the specific mechanisms of crowding responsible for these outcomes is important. The present study was conducted to determine the effects of crowding on oocytes with a particular focus on the intimacy of contacts between oocyte and cumulus/granulosa cells. Growing mouse oocyte-granulosa cell complexes were cultured for 10 days in a modified α-minimum essential medium, supplemented with PVP at a concentration of 0%, 1%, 2%, or 3% (w/v)...
April 13, 2018: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/29445070/development-to-term-of-sheep-embryos-reconstructed-after-inner-cell-mass-trophoblast-exchange
#19
Pasqualino Loi, Cesare Galli, Giovanna Lazzari, Kazutsugu Matsukawa, Josef Fulka, Frank Goeritz, Thomas B Hildebrandt
Here we report in vitro and term development of sheep embryos after the inner cell mass (ICM) from one set of sheep blastocysts were injected into the trophoblast vesicles of another set. We also observed successful in vitro development of chimeric blastocysts made from sheep trophoblast vesicles injected with bovine ICM. First, we dissected ICMs from 35 sheep blastocysts using a stainless steel microblade and injected them into 29 re-expanded sheep trophoblastic vesicles. Of the 25 successfully micromanipulated trophoblastic vesicles, 15 (51...
April 13, 2018: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/29445069/expression-and-distribution-of-the-zinc-finger-protein-snai3-in-mouse-ovaries-and-pre-implantation-embryos
#20
Shujuan Guo, Xingyu Yan, Feifei Shi, Ke Ma, Zi-Jiang Chen, Cong Zhang
The Snail gene family includes Snai1, Snai2, and Snai3 that encode zinc finger-containing transcriptional repressors in mammals. The expression and localization of SNAI1 and SNAI2 have been studied extensively during folliculogenesis, ovulation, luteinization, and embryogenesis in mice. However, the role of SNAI3 is unknown. In this study, we investigated the expression of SNAI3 during these processes. Our immunohistochemistry data showed that SNAI3 first appeared in oocytes by postnatal day (PD) 9. Following this, SNAI3 was found to be expressed consistently in theca and interstitial cells, along with oocytes...
April 13, 2018: Journal of Reproduction and Development
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