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spermatogonial stem cell

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https://www.readbyqxmd.com/read/28726193/regenerative-potential-of-spermatogonial-stem-cells-endothelial-progenitor-cells-and-epithelial-progenitor-cells-of-c57bl-6-male-mice-with-metabolic-disorders
#1
E G Skurikhin, A V Pakhomova, O V Pershina, L A Ermolaeva, V A Krupin, N N Ermakova, E S Pan, A I Kudryashova, O Yu Rybalkina, T B Pavlovskaya, N V Litvyakov, V E Goldberg, A M Dygai
The properties of spermatogonial stem cells, endothelial progenitor cells, and the epithelial progenitors of C57Bl/6 mice under conditions of metabolic disorders were studied using the model of busulfan-induced suppression of spermatogenesis and in vitro culture technique. Spermatogonial stem cells CD117-CD90(+) and epithelial progenitors CD45-CD31-Sca-1(+)CD49f(+) derived from the testes of mice with metabolic disturbances demonstrated 17- and 28-fold increase in the respective cell mass and generated cell colonies in vitro...
June 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28708515/stage-specific-expression-of-sal-like-protein-4-in-boar-testicular-germ-cells
#2
Hyun-Jung Park, Ran Lee, Won-Young Lee, Jin-Hoi Kim, Jeong Tae Do, Chankyu Park, Hyuk Song
Spermatogenesis, the complex process of sperm cell development including mitotic cell division and meiosis, relies on spermatogonial stem cells (SSCs). While markers for developing germ cells have been well investigated in mice, developmental stage-specific markers of germ cells in domestic animals have not been identified. Sal-like protein 4 (SALL4) is known as a putative marker for undifferentiated spermatogonia in rodents; however, its expression in domestic animals has not been investigated. The objective of this study was to characterize the expression of SALL4 in the developmental stages of boar testes and SSCs...
June 16, 2017: Theriogenology
https://www.readbyqxmd.com/read/28703914/hsd3b2-associated-in-modulating-steroid-hormone-synthesis-pathway-regulates-the-differentiation-of-chicken-embryonic-stem-cells-into-spermatogonial-stem-cells
#3
Chen Zhang, Man Wang, Nana He, Mahmoud F Ahmed, Yilin Wang, Ruifeng Zhao, Xinjian Yu, Jing Jin, Jiuzhou Song, Qisheng Zuo, Yani Zhang, Bichun Li
Steroid hormones regulate differentiation of various types of cell during embryogenesis. Testosterone is one of the androgens that bind to receptors to regulate gene expression and promote spermatogenesis. Our results showed that testosterone, as a product of steroid hormones synthesis pathway, could facilitate the differentiation of embryonic stem cells (ESCs) into spermatogonial stem cells (SSCs). The analysis of the steroid hormones synthesis pathway demonstrated that 3beta-hydroxysteroid dehydrogenase2 (Hsd3b2) plays a major role in the synthesis of testosterone...
July 13, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28699140/effects-of-different-sertoli-cell-types-on-the-maintenance-of-adult-spermatogonial-stem-cells-in-vitro
#4
Maryam Baazm, Farideh Jalali Mashayekhi, Saeid Babaie, Parvindokht Bayat, Cordian Beyer, Adib Zendedel
Spermatongonial stem cells (SSCs) are unique testis cells that are able to proliferate, differentiate, and transmit genetic information to the next generation. However, the effect of different Sertoli cell types on the expression of specific SSC genes is not yet well understood. In this study, we compare the in vitro effect of adult Sertoli cells, embryonic Sertoli cells, and TM4 (a Sertoli cell line) as feeder layers on the expression of SSC genes. SSCs were isolated from the testis of adult male mice and purified by differential plating...
July 11, 2017: In Vitro Cellular & Developmental Biology. Animal
https://www.readbyqxmd.com/read/28691222/the-morphology-of-the-male-reproductive-system-spermatogenesis-and-the-spermatozoon-of-daphnia-magna-crustacea-branchiopoda
#5
Maggie Wuerz, Erwin Huebner, Judith Huebner
This study analyses the histological and cellular morphology of the testis and sperm development in the male Daphnia magna Straus 1820. Due to the rarity of males and predominately parthenogenetic lifecycle of Daphnia, there has been limited detailed information on males in contrast to the well-studied female. Using light and electron microscopy approaches, we describe the morphology of the testis during the progression from an immature to mature testis. The testis has an encasing muscular mesh sheath outside the basal lamina, beneath which is a thin somatic epithelial cell layer...
July 10, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28674937/scaffold-based-and-scaffold-free-testicular-organoids-from-primary-human-testicular-cells
#6
Yoni Baert, Charlotte Rombaut, Ellen Goossens
Organoid systems take advantage of the self-organizing capabilities of cells to create diverse multi-cellular tissue surrogates that constitute a powerful novel class of biological models. Clearly, the formation of a testicular organoid (TO) in which human spermatogenesis can proceed from a single-cell suspension would exert a tremendous impact on research and development, clinical treatment of infertility, and screening of potential drugs and toxic agents. Recently, we showed that primary adult and pubertal human testicular cells auto-assembled in TOs either with or without the support of a natural testis scaffold...
July 4, 2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28674816/crispr-cas9-mediated-gene-editing-in-mouse-spermatogonial-stem-cells
#7
Yinghua Wang, Yifu Ding, Jinsong Li
Precise genome editing is a powerful tool for analysis of gene function. However, in spermatogonial stem cells (SSCs), this still remains a big challenge mainly due to low efficiency and complexity of currently available gene editing techniques. The CRISPR-Cas9 system from bacteria has been applied to modifying genome in different species at a very high efficiency and specificity. Here we describe CRISPR-Cas9-mediated gene editing via nonhomologous end joining (NHEJ) or homology-directed repair (HDR) in SSCs...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28670516/generation-of-mouse-spermatogonial-stem-cell-colonies-in-a-non-adherent-culture
#8
Hossein Azizi, Thomas Skutella, Abdolhossein Shahverdi
OBJECTIVE: The properties of self-renewal and division in spermatogonial stem cells (SSCs) support spermatogenesis. There is a number of reported methods for in vitro SSC culture systems. The development of a culture system that effectively supports isolation and selfrenewal of germline stem cells (GSCs) is of tremendous benefit for clinical trials, experimental research, and as potential treatment for male infertility. The current study aims to consider the cultivation and behavior of GSCs in a non-adherent culture system...
July 2017: Cell Journal
https://www.readbyqxmd.com/read/28669602/the-bile-acid-nuclear-receptor-fxr%C3%AE-is-a-critical-regulator-of-mouse-germ-cell-fate
#9
Emmanuelle Martinot, Lauriane Sèdes, Marine Baptissart, Hélène Holota, Betty Rouaisnel, Christelle Damon-Soubeyrand, Angélique De Haze, Jean-Paul Saru, Christelle Thibault-Carpentier, Céline Keime, Jean-Marc A Lobaccaro, Silvère Baron, Gérard Benoit, Françoise Caira, Claude Beaudoin, David H Volle
Spermatogenesis is the process by which spermatozoa are generated from spermatogonia. This cell population is heterogeneous, with self-renewing spermatogonial stem cells (SSCs) and progenitor spermatogonia that will continue on a path of differentiation. Only SSCs have the ability to regenerate and sustain spermatogenesis. This makes the testis a good model to investigate stem cell biology. The Farnesoid X Receptor alpha (FXRα) was recently shown to be expressed in the testis. However, its global impact on germ cell homeostasis has not yet been studied...
July 11, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28661483/gene-knockout-of-zmym3-in-mice-arrests-spermatogenesis-at-meiotic-metaphase-with-defects-in-spindle-assembly-checkpoint
#10
Xiangjing Hu, Bin Shen, Shangying Liao, Yan Ning, Longfei Ma, Jian Chen, Xiwen Lin, Daoqin Zhang, Zhen Li, Chunwei Zheng, Yanmin Feng, Xingxu Huang, Chunsheng Han
ZMYM3, a member of the MYM-type zinc finger protein family and a component of a LSD1-containing transcription repressor complex, is predominantly expressed in the mouse brain and testis. Here, we show that ZMYM3 in the mouse testis is expressed in somatic cells and germ cells until pachytene spermatocytes. Knockout (KO) of Zmym3 in mice using the CRISPR-Cas9 system resulted in adult male infertility. Spermatogenesis of the KO mice was arrested at the metaphase of the first meiotic division (MI). ZMYM3 co-immunoprecipitated with LSD1 in spermatogonial stem cells, but its KO did not change the levels of LSD1 or H3K4me1/2 or H3K9me2...
June 29, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28641554/future-of-spermatogonial-stem-cell-culture-application-of-nanofiber-scaffolds
#11
Azar Shams, Neda Eslahi, Mansoureh Movahedin, Fariborz Izadyar, Hamidreza Asgari, Morteza Koruji
The spermatogonial stem cells (SSCs) are unique in mammals because they can transmit genetic information from generation to generation and it is of significant importance. In testes, Sertoli cells, peritubular myoid cells, Leydig cells and other interstitial cells contribute to the spermatogonial stem cell "niche". So, creation of niche in in vitro condition that mimics in vivo environment is essential to maintain functional characteristic of SSCs. Nanofiber matrices mimic the architecture and size scale of the natural extracellular matrix (ECM)...
June 22, 2017: Current Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28624768/a-revised-asingle-model-to-explain-stem-cell-dynamics-in-the-mouse-male-germline
#12
REVIEW
Tessa Lord, Jon M Oatley
Spermatogonial stem cells (SSCs) and progenitor spermatogonia encompass the undifferentiated spermatogonial pool in mammalian testes. In rodents, this population is comprised of Asingle, Apaired and chains of 4-16 Aaligned spermatogonia. Although traditional models propose that the entire Asingle pool represents SSCs, and formation of an Apaired syncytium symbolizes irreversible entry to a progenitor state destined for differentiation; recent models have emerged that suggest that the Asingle pool is heterogeneous, and Apaired/Aaligned can fragment to produce new SSCs...
August 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28608322/long-evans-rat-spermatogonial-lines-are-effective-germline-vectors-for-transgenic-rat-production
#13
F Kent Hamra, Christopher T Richie, Brandon K Harvey
Long Evans rat strains are applied as research models in a broad spectrum of biomedical fields (>15,800 citations, NCBI PubMed). Here, we report an approach to genetically modify the Long Evans rat germline in donor spermatogonial stem cells. Long Evans rat spermatogonial lines were derived from freshly isolated laminin-binding spermatogonia. Laminin-binding spermatogonia were cultured over multiple passages on fibroblast feeder layers in serum-free culture medium containing GDNF and FGF2. Long Evans rat spermatogonial lines were genetically modified by transposon transduction to express a germline, tdTomato reporter gene...
August 2017: Transgenic Research
https://www.readbyqxmd.com/read/28602961/progress-and-biotechnological-prospects-in-fish-transgenesis
#14
REVIEW
Fernanda M P Tonelli, Samyra M S N Lacerda, Flávia C P Tonelli, Guilherme M J Costa, Luiz Renato de França, Rodrigo R Resende
The history of transgenesis is marked by milestones such as the development of cellular transdifferentiation, recombinant DNA, genetic modification of target cells, and finally, the generation of simpler genetically modified organisms (e.g. bacteria and mice). The first transgenic fish was developed in 1984, and since then, continuing technological advancements to improve gene transfer have led to more rapid, accurate, and efficient generation of transgenic animals. Among the established methods are microinjection, electroporation, lipofection, viral vectors, and gene targeting...
June 8, 2017: Biotechnology Advances
https://www.readbyqxmd.com/read/28597334/jak-stat-signaling-regulation-of-chicken-embryonic-stem-cell-differentiation-into-male-germ-cells
#15
Yu Zhang, Lei Zhang, Qisheng Zuo, Yinjie Wang, Yani Zhang, Qi Xu, Bichun Li, Guohong Chen
The Janus kinase-signal transducer and activator of transcription (JAK-STAT) signaling is crucial in chicken germ stem cell differentiation, but its role in the regulation of germ cell differentiation is unknown. To address this, cucurbitacin I or interleukin 6 was used to inhibit or activate JAK-STAT signaling during embryonic stem cells (ESCs) differentiation. The expression of downstream JAK-STAT signaling molecules was assessed by Western blotting and quantitative real-time polymerase chain reaction (qRT-PCR)...
June 8, 2017: In Vitro Cellular & Developmental Biology. Animal
https://www.readbyqxmd.com/read/28585553/nedd4-controls-spermatogonial-stem-cell-homeostasis-and-stress-response-by-regulating-messenger-ribonucleoprotein-complexes
#16
Zhi Zhou, Hiroshi Kawabe, Atsushi Suzuki, Kaori Shinmyozu, Yumiko Saga
P bodies (PBs) and stress granules (SGs) are conserved cytoplasmic aggregates of cellular messenger ribonucleoprotein complexes (mRNPs) that are implicated in mRNA metabolism and play crucial roles in adult stem cell homeostasis and stress responses. However, the mechanisms underlying the dynamics of mRNP granules are poorly understood. Here, we report NEDD4, an E3 ubiquitin ligase, as a key regulator of mRNP dynamics that controls the size of the spermatogonial progenitor cell (SPC) pool. We find that NEDD4 targets an RNA-binding protein, NANOS2, in spermatogonia to destabilize it, leading to cell differentiation...
June 6, 2017: Nature Communications
https://www.readbyqxmd.com/read/28576919/trivial-role-for-nsmce2-during-in-vitro-proliferation-and-differentiation-of-gs-cells
#17
Yi Zheng, Aldo Jongejan, Callista L Mulder, Sebastiaan Mastenbroek, Sjoerd Repping, Yinghua Wang, Jinsong Li, Geert Hamer
Spermatogenesis, starting with spermatogonial differentiation, is characterized by ongoing and dramatic alterations in composition and function of chromatin. Failure to maintain proper chromatin dynamics during spermatogenesis may lead to mutations, chromosomal aberrations or aneuploidies. When transmitted to the offspring, these can cause infertility or congenital malformations. The structural maintenance of chromosomes (SMC) 5/6 protein complex has recently been described to function in chromatin modeling and genomic integrity maintenance during spermatogonial differentiation and meiosis...
June 2, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28575233/stem-cell-activity-of-type-a-spermatogonia-is-seasonally-regulated-in-rainbow-trout
#18
Mana Sato, Makoto Hayashi, Goro Yoshizaki
Spermatogonial stem cells (SSCs) support continuous production of sperm throughout the male's life. However, the biological characteristics of SSCs are poorly understood in animals exhibiting seasonal reproduction, even though most wild animals are seasonal breeders. During the spermiation season in rainbow trout, the lumen of the testes contain only spermatozoa and scattered type A spermatogonia (ASG) along the walls of the testicular lobules. These few remaining ASG, designated "residual ASG," are the only germ cells capable of supporting the next spermatogenesis, suggesting that the residual ASG are true SSCs...
May 30, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28569396/mir-100-promotes-the-proliferation-of-spermatogonial-stem-cells-via-regulating-stat3
#19
Yong-Li Huang, Guan-You Huang, Jing Lv, Li-Na Pan, Xi Luo, Jie Shen
Micro RNAs play important roles during mammalian spermatogenesis, but the function(s) of specific miRNAs remain largely unknown. Here, we report that miR-100 is predominantly expressed in undifferentiated murine spermatogonia, including spermatogonial stem cells (SSCs). We utilized a miRNA mimic and inhibitor to knock down and overexpress miR-100 in cultured SSCs, respectively, finding that the miR-100 promotes the proliferation of SSCs in vitro. Furthermore, signals promoting SSC maintenance induced, whereas retinoic acid repressed, expression of miR-100...
June 1, 2017: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/28552527/the-effects-of-igf-1-on-mouse-spermatogenesis-using-an-organ-culture-method
#20
Jianfei Yao, Haiyang Zuo, Jun Gao, Mingming Wang, Dong Wang, Xiangdong Li
Currently available organ culture methods can induce the differentiation of spermatogonial stem cells (SSCs) to spermatids in vitro, but the percentages of haploid cells and elongated spermatids are extremely low. The goal of this study was to test strategies to increase the differentiation rate of SSCs into elongated spermatids in vitro. RNA-seq was performed from forty round spermatids isolated by laser capture microdissection from cultured mouse testicular fragments (MTFs) or 27 days post-partum testes. Gene Ontology (GO) and KEGG analysis of the transcriptome revealed that many cell cycle and apoptosis-associated genes were among the differently expressed genes...
May 25, 2017: Biochemical and Biophysical Research Communications
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