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https://www.readbyqxmd.com/read/29785746/systematic-in-depth-proteomic-analysis-of-mitochondria-associated-endoplasmic-reticulum-membranes-mam-in-mouse-and-human-testes
#1
Xiaoli Wang, Yujiao Wen, Juan Dong, Congcong Cao, Shuiqiao Yuan
Mitochondria-associated endoplasmic reticulum membranes (MAMs) regulate important cellular functions including calcium signaling, bioenergetics, and apoptosis during neurodevelopment and carcinogenesis, but its function in male reproduction and spermatogenesis remains enigmatic because the field lacks a complete understanding of the proteome within testis MAMs. To better understand the biological processes and molecular functions of MAM in testes, here, we report a global mass spectrometry-based proteomic evaluation of the MAM obtained from human testes, mouse testes and brains, respectively...
May 21, 2018: Proteomics
https://www.readbyqxmd.com/read/29777910/differentially-expressed-novel-alternatively-spliced-transcript-variant-of-tumor-suppressor-stk11-gene-in-mouse
#2
Hassan Mubarak Ishqi, Tarique Sarwar, Mohammed Amir Husain, Sayeed Ur Rehman, Mohammad Tabish
Serine/threonine kinase 11 (STK11) is a protein kinase that is encoded by Stk11 gene located on chromosome 19 and 10 in humans and mouse respectively. It acts as a master kinase of adenine monophosphate-activated protein kinase (AMPK) pathway that coordinates the regulation of cellular energy metabolism and cell division. STK11 exerts effect by activating more than 14 kinases including AMPK and AMPK-related kinases. It is also known to regulate cell polarity and acts as tumor suppressor. Alternative splicing of pre-mRNA is a mechanism which results in multiple transcript variants of a single gene...
May 16, 2018: Gene
https://www.readbyqxmd.com/read/29776850/what-is-the-best-protocol-to-cryopreserve-immature-mouse-testicular-cell-suspensions
#3
Jaime Onofre, Katrien Faes, Prashant Kadam, Elena Vicini, Ans M M van Pelt, Ellen Goossens
RESEARCH QUESTION: From a clinical perspective, which parameters grant optimal cryopreservation of mouse testicular cell suspensions? DESIGN: We studied the effect of different cryopreservation rates, the addition of sugars, different vessels and the addition of an apoptotic inhibitor on the efficiency of testicular cell suspension cryopreservation. After thawing and warming, testicular cell suspensions were transplanted to recipient mice for further functional assay...
April 27, 2018: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/29771299/at-the-crossroads-of-fate-somatic-cell-lineage-specification-in-the-fetal-gonad
#4
Emmi Rotgers, Anne Jørgensen, Humphrey Hung-Chang Yao
The reproductive endocrine systems are vastly different between male and female. This sexual dimorphism of endocrine milieu originates from sex-specific differentiation of the somatic cells in the gonads during fetal life. The majority of gonadal somatic cells arise from the adrenogonadal primordium. After separation of the adrenal and gonadal primordia, the gonadal somatic cells initiate sex-specific differentiation during gonadal sex determination with the specification of the supporting cell lineages: Sertoli cells in the testis vs...
May 15, 2018: Endocrine Reviews
https://www.readbyqxmd.com/read/29768980/enhanced-steroidogenic-and-altered-antioxidant-response-by-zno-nanoparticles-in-mouse-testis-leydig-cells
#5
Nisha Bara, Gautam Kaul
Zinc oxide nanoparticles (ZnO NPs) are important nanomaterials with myriad applications and in widespread use. The main aim of this study was to evaluate the direct effect of ZnO NPs on steroidogenesis by considering mouse testicular Leydig cells (TM3) as an in vitro model system. The uptake, intracellular behaviour, cytotoxicity and morphological changes induced by ZnO NPs (0-200 µg/ml) in a time-dependent manner in the TM3 were assessed. A significant ( p < 0.05) decrease in TM3 viability was observed at 2 µg/ml ZnO NP after a 1-h incubation time period...
January 1, 2018: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/29749435/spag6-silencing-induces-apoptosis-in-the-myelodysplastic-syndrome-cell-line-skm%C3%A2-1-via-the-pten-pi3k-akt-signaling-pathway-in-vitro-and-in-vivo
#6
Jiaxiu Yin, Xinxin Li, Zaili Zhang, Xiaohua Luo, Li Wang, Lin Liu
Apoptosis is a multi-step mechanism of cell self‑destruction for maintaining cellular homeostatic balance. Accumulating evidence indicates that abnormal apoptosis promotes the evolution and progression of myelodysplastic syndromes (MDS). As a novel cancer-testis antigen, sperm‑associated antigen 6 (SPAG6) has been reported to regulate apoptosis through the tumor necrosis factor-related apoptosis-inducing ligand signaling pathway in the MDS cell line SKM‑1. However, the mechanism of the intrinsic cell death pathway for apoptosis induction by SPAG6 silencing is unclear...
May 2, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29748603/tspy1-suppresses-usp7-mediated-p53-function-and-promotes-spermatogonial-proliferation
#7
Ying Shen, Wenling Tu, Yunqiang Liu, Xiling Yang, Qiang Dong, Bo Yang, Jinyan Xu, Yuanlong Yan, Xue Pei, Mohan Liu, Wenming Xu, Yuan Yang
Testis-specific protein Y-linked 1 (TSPY1) is expressed predominantly in adult human spermatogonia and functions in the process of spermatogenesis; however, our understanding of the underlying mechanism is limited. Here we observed that TSPY1, as an interacting partner of TSPY-like 5 (TSPYL5), enhanced the competitive binding of TSPYL5 to ubiquitin-specific peptidase 7 (USP7) in conjunction with p53. This activity, together with its promotion of TSPYL5 expression by acting as a transcription factor, resulted in increased p53 ubiquitylation...
May 10, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29744867/p-glycoprotein-mdr1-abcb1-restricts-brain-accumulation-and-cytochrome-p450-3a-cyp3a-limits-oral-availability-of-the-novel-alk-ros1-inhibitor-lorlatinib
#8
Wenlong Li, Rolf W Sparidans, Yaogeng Wang, Maria C Lebre, Els Wagenaar, Jos H Beijnen, Alfred H Schinkel
Lorlatinib (PF-06463922) is a promising oral anaplastic lymphoma kinase (ALK) and ROS1 inhibitor currently in Phase III clinical trials for treatment of non-small cell lung cancer (NSCLC) containing an ALK rearrangement. With therapy-resistant brain metastases a major concern in NSCLC, lorlatinib was designed to have high membrane and blood-brain barrier permeability. We investigated the roles of the multidrug efflux transporters ABCB1 and ABCG2, and the multispecific drug-metabolizing enzyme CYP3A in plasma pharmacokinetics and tissue distribution of lorlatinib using genetically modified mouse strains...
May 9, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29743438/improved-boronate-affinity-electrophoresis-by-optimization-of-the-running-buffer-for-a-single-step-separation-of-pirna-from-mouse-testis-total-rna
#9
Yusuke Sato, Daijiro Iwasawa, Kuo Ping Hui, Rena Nakagomi, Seiichi Nishizawa
Here we examined optimization of the running buffer in boronate affinity electrophoresis for improved separation of PIWI-interacting RNA (piRNA) with 2'-O-methylated ribose in 3'-terminal nucleotide. The use of Good's buffer, such as HEPES, significantly increased the separation efficiency for piRNA over normal RNA with free 3'-terminal ribose, and retained an ability to resolve the difference by at least 4-nucleotide lengths in the target piRNAs. We also demonstrated a single-step separation of piRNA from mouse testis total RNA...
2018: Analytical Sciences: the International Journal of the Japan Society for Analytical Chemistry
https://www.readbyqxmd.com/read/29743260/cellular-nucleic-acid-binding-protein-is-vital-to-testis-development-and-spermatogenesis-in-mice
#10
Bo Zheng, Tingting Gao, Jun Yu, Yueshuai Guo, Cong Shen, Xi Zhang, Hong Li, Xiaoyan Huang
The cellular nucleic acid-binding protein (CNBP), also known as zinc finger protein 9 (ZNF9), is a highly conserved zinc finger protein that is strikingly conserved among vertebrates. Data collected from low vertebrates showed that CNBP is expressed at high levels and distributed in the testes during spermatogenesis. However, the location and function of CNBP in mammalian testes is not well known. Here, by neonatal mouse testis culture and SSC culture methods, we studied the effect of CNBP knockdown on neonatal testicular development...
May 9, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29738159/-expression-characteristics-of-the-usp24-gene-in-the-mouse-testis-during-spermatogenesis
#11
Qi-Yi Hu, Qiong Deng, Jian-Wen Zhang, Fan Zhi, Rui Sun, Hui Liang
Objective: To investigate the expression characteristics of the USP24 gene in the mouse testis and its role in spermatogenesis. METHODS: We examined the expression characteristics of USP24 in the testis tissues of wild-type mice at different postnatal weeks (PNW) and androgen receptor (AR)-knockout (ARKO) adult mice using real-time quantitative PCR and immunofluorescence, and detected the transcriptional activity of the USP24 promoter by dual-luciferase reporter gene assay...
November 2017: Zhonghua Nan Ke Xue, National Journal of Andrology
https://www.readbyqxmd.com/read/29737459/safety-of-intra-articular-transplantation-of-lentivirally-transduced-mesenchymal-stromal-cells-for-haemophilic-arthropathy-in-a-non-human-primate
#12
Tsukasa Ohmori, Hiroaki Mizukami, Yuko Katakai, Sho Kawai, Hitoyasu Nakamura, Makoto Inoue, Tsugumine Shu, Hideharu Sugimoto, Yoichi Sakata
Joint bleeding and resultant arthropathy are major determinants of quality of life in haemophilia patients. We previously developed a mesenchymal stromal cell (MSC)-based treatment approach for haemophilic arthropathy in a mouse model of haemophilia A. Here, we evaluated the long-term safety of intra-articular injection of lentivirally transduced autologous MSCs in non-human primates. Autologous bone-marrow-derived MSCs transduced with a lentiviral vector expressing coagulation factor VIII (FVIII) were injected into the left knee joint of cynomolgus monkeys...
May 8, 2018: International Journal of Hematology
https://www.readbyqxmd.com/read/29733332/ccdc87-is-critical-for-sperm-function-and-male-fertility
#13
Tongtong Wang, Qianqian Yin, Xuehao Ma, Ming-Han Tong, Yuchuan Zhou
Male infertility has become an increasingly common health concern in recent years. Apart from environmental factors, nutrition, lifestyle, and sexually transmitted diseases, genetic defects are important causes of male infertility. Many genes have been demonstrated to be associated with male infertility. However, the roles of some functional genes in infertility, especially those that are specifically expressed in the reproductive system, remain to be elucidated. Here, we demonstrated that the testis-specific gene coiled-coil domain-containing 87 (Ccdc87) is critical for male fertility...
May 3, 2018: Biology of Reproduction
https://www.readbyqxmd.com/read/29729907/technical-note-p40-antibody-as-a-replacement-for-p63-antibody-in-bovine-mammary-immunohistochemistry
#14
C L M Parsons, H L M Tucker, R M Akers, K M Daniels
Tumor protein 63 (p63) is a nuclear antigen found in basal epithelial cells. To date, 10 isoforms of p63 have been identified, falling into 2 major groups identified by presence or absence of an N-terminal transactivation domain (TAp63 and ΔNp63, respectively). Literature suggests that ΔNp63 is the predominant form expressed in basal epithelial cells and myoepithelial cells (MYEC). The mouse anti-p63 antibody, clone 4B1E12, has been used as a specific nuclear marker for bovine MYEC. Unfortunately, this antibody is no longer commercially available...
May 2, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29729005/can-the-positive-association-of-osteocalcin-with-testosterone-be-unmasked-when-the-preeminent-hypothalamic-pituitary-regulation-of-testosterone-production-is-impaired-the-model-of-spinal-cord-injury
#15
A Barbonetti, S D'Andrea, J Samavat, A Martorella, G Felzani, S Francavilla, M Luconi, F Francavilla
PURPOSE: Osteocalcin (OCN), released from the bone matrix during the resorption phase, in its undercarboxylated form, stimulates testosterone (T) biosynthesis in mouse and a loss-of-function mutation of its receptor was associated with hypergonadotropic hypogonadism in humans. Nevertheless, when population-based studies have explored the OCN-T association, conflicting results have been reported. Hypothesizing that the evidence of a positive association between OCN and T could have been hindered by the preeminent role of a well-functioning hypothalamus-pituitary axis in promoting T biosynthesis, we explored this association in men with chronic spinal cord injury (SCI), exhibiting high prevalence of non-hypergonadotropic androgen deficiency...
May 4, 2018: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/29727534/-dynamic-changes-of-ph2ax-expression-in-the-reversibility-of-mouse-testicular-reproductive-function-impaired-by-single-heat-stress
#16
Hong-Cheng Tian, Ying-Qiao Xu, He Ma, Hui-Jun Wang, Xue-Feng Li, Xin-Hua Wang, Liang-Hong Ma, Qing-Chun Li, Dong-Mei Zhang, Yan-Lin Wang
Objective: To investigate the role of pH2AX in the reversibility of mouse testicular reproductive function impaired by single heat stress. METHODS: Twenty-four C57 male mice were randomly divided into heat stress and control groups and immersed in water at 43℃ and 25℃, respectively, for 15 minutes. At 1, 7, and 14 days of heat exposure, all the mice were sacrificed and their testis tissues collected for determining the apoptosis of the germ cells by TUNEL and measuring the expression level of the pH2AX protein by immunohistochemistry and Western blot...
October 2017: Zhonghua Nan Ke Xue, National Journal of Andrology
https://www.readbyqxmd.com/read/29726657/-excessive-fluoride-increases-the-expression-of-osteocalcin-in-the-mouse-testis
#17
Jian-Hua Qin, Aierken Dilinuer, Shataer Saimire, Aierken Kalibinuer, Mahemuti Yusufu, Aili Yirizhati, Sai-Sai Cui, Maimaitiming Nuersimanguli, Wu-Jin Chen, Sheng-Bin Bai
Objective: To observe the influence of excessive fluoride on the levels of osteocalcin and testosterone in the testis of the male mouse. METHODS: Twenty-four C57BL/6J male mice were equally randomized into a normal control and a fluorosis model group, the former fed on distilled water while the latter on a solution of sodium fluoride (100 mg/L) in distilled water, both for 12 weeks. Then, the level of osteocalcin in the testis tissue was measured with the immunohistochemical streptavidin-peroxidase (SP) method and those of osteocalcin and testosterone in the serum determined by ELISA...
September 2017: Zhonghua Nan Ke Xue, National Journal of Andrology
https://www.readbyqxmd.com/read/29713369/extrahepatic-cytochrome-p450s-play-an-insignificant-role-in-triptolide-induced-toxicity
#18
Yuan Wei, Dujun Wang, Meng Chen, Zhen Ouyang, Shuo Wang, Jun Gu
Background: Triptolide, an active ingredient of Chinese medicine plant Tripterygium wilfordii Hook.f., has been shown to exert anti-tumor, immunosuppressive, anti-inflammatory, and anti-fertility pharmacological effects. However, triptolide also causes severe side effects, which are manifested as toxicities in multiple organs. The aim of this study was to analyze the role of extrahepatic cytochrome P450 enzymes in triptolide-induced toxicity. Methods: Xh-CL mouse model with normal liver, but low extrahepatic P450 expression levels was used in this study...
2018: Chinese Medicine
https://www.readbyqxmd.com/read/29707685/differential-expression-of-cyclic-amp-response-element-binding-protein-zhangfei-crebzf-in-the-mouse-testis-during-postnatal-development
#19
Hoon Jang
Cyclic AMP-response element binding protein zhangfei (CREBZF), a member of ATF/CREB (activating transcription factor/ cAMP response element binding protein) family, regulates numerous cellular functions and development of cells by interacting transcription factors. This study discovered the expression pattern of CREBZF in seminiferous tubule of testes during the postnatal development of mice. In testis, CREBZF mRNA expression was the highest among other organs. Immunofluorescence analyses showed that the CREBZF was specifically expressed on spermatocyte but not in spermatogonia and Sertoli cells in seminiferous epithelium of mouse testis...
March 2018: Balsaeng'gwa Saengsig
https://www.readbyqxmd.com/read/29705697/a-monolayer-microfluidic-device-supporting-mouse-spermatogenesis-with-improved-visibility
#20
Hiroyuki Yamanaka, Mitsuru Komeya, Hiroko Nakamura, Hiroyuki Sanjo, Takuya Sato, Masahiro Yao, Hiroshi Kimura, Teruo Fujii, Takehiko Ogawa
In our previous study, we produced a microfluidic device (MFD) which successfully maintained spermatogenesis for over 6 months in mouse testis tissues loaded in the device. In the present study, we developed a new MFD, a monolayer device (ML-D) with a barrier structure consisting of pillars and slits, which is simpler in design and easier to make. This ML-D was also effective for inducing mouse spermatogenesis and maintained it for a longer period than the conventional culture method. In addition, we devised a way of introducing sample tissue into the device during its production, just before bonding the upper layer of polydimethylsiloxane (PDMS) and bottom glass slide...
April 26, 2018: Biochemical and Biophysical Research Communications
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