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https://www.readbyqxmd.com/read/28927095/high-expression-of-mage-a9-is-associated-with-unfavorable-survival-in-esophageal-squamous-cell-carcinoma
#1
Yu Qi, Ke Xin Cao, Fu Chen Xing, Chun Yang Zhang, Qi Huang, Kai Wu, Feng Biao Wen, Song Zhao, Xin Li
Melanoma-associated antigens (MAGEs) are a group of well-characterized members of the cancer/testis antigen family, which are expressed in a variety of malignant tumors. MAGE-A9, a subfamily of MAGE-As, has been studied in a number of types of cancer and have been associated with unfavorable survival outcome. However, the expression of MAGE-A9 in human esophageal squamous cell carcinoma (ESCC) and association of MAGE-A9 with the clinicopathological characteristics of ESCC, particularly prognostic characteristics, remains unknown...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28926357/first-in-human-treatment-with-a-dendritic-cell-targeting-lentiviral-vector-expressing-ny-eso-1-lv305-induces-deep-durable-response-in-refractory-metastatic-synovial-sarcoma-patient
#2
Seth M Pollack, Hailing Lu, Sacha Gnjatic, Neeta Somaiah, Ryan B O'Malley, Robin L Jones, Frank J Hsu, Jan Ter Meulen
Effective induction of antitumor T cells is a pivotal goal of cancer immunotherapy. To this end, lentiviral vectors (LV) are uniquely poised to directly prime CD8 T-cell responses via transduction of dendritic cells in vivo and have shown promise as active cancer therapeutics in preclinical tumor models. However, until now, significant barriers related to production and regulation have prevented their widespread use in the clinic. We developed LV305, a dendritic cell-targeting, integration-deficient, replication incompetent LV from the ZVex platform, encoding the full-length cancer-testis antigen NY-ESO-1...
September 18, 2017: Journal of Immunotherapy
https://www.readbyqxmd.com/read/28914051/chromosome-centric-human-proteome-project-allies-with-developmental-biology-a-case-study-of-the-role-of-y-chromosome-genes-in-organ-development
#3
Anna Meyfour, Paria Pooyan, Sara Pahlavan, Mostafa Rezaei-Tavirani, Hamid Gourabi, Hossein Baharvand, Ghasem Hosseini Salekdeh
One of the main goals of Chromosome-Centric Human Proteome Project is to identify protein evidence for missing proteins (MPs). Here, we present a case study of the role of Y chromosome genes in organ development and how to overcome the challenges facing MPs identification by employing human pluripotent stem cell differentiation into cells of different organs yielding unprecedented biological insight into adult silenced proteins. Y chromosome is a male-specific sex chromosome which escapes meiotic recombination...
September 15, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28911169/obesity-induced-infertility-in-male-mice-is-associated-with-disruption-of-crisp4-expression-and-sperm-fertilization-capacity
#4
Beatriz C Borges, David Garcia-Galiano, Sanseray da Silveira Cruz-Machado, Xingfa Han, Galina B Gavrilina, Thomas L Saunders, Richard J Auchus, Saher S Hammoud, Gary D Smith, Carol F Elias
Approximately 15% of human couples of reproductive age have impaired fertility, and the male component accounts for about half of these cases. The etiology is usually unknown, but high correlation with the increase in obesity rates is documented. In this study, we show that diet-induced and genetically obese mice display copulatory behavior comparable to controls, but the number of females impregnated by obese males is remarkably low. Screening for changes in gene expression in the male reproductive tract showed decreased Crisp4 expression in testis and epididymis of obese mice...
September 1, 2017: Endocrinology
https://www.readbyqxmd.com/read/28905369/tsga10-is-a-novel-candidate-gene-associated-with-acephalic-spermatozoa
#5
Yan-Wei Sha, Yan-Kun Sha, Zhi-Yong Ji, Li-Bin Mei, Lu Ding, Qing Zhang, Ping-Ping Qiu, Shao-Bin Lin, Xu Wang, Ping Li, Xiaohui Xu, Lin Li
Acephalic spermatozoa is a rare teratozoospermia associated with male infertility. However, the pathogenesis of this disorder remains unclear. Here, we report a 27-year-old infertile male from a consanguineous family, who presented with 99% headless sperm in his ejaculate. Electron microscopic and immunofluorescence analysis suggested breakage at the midpiece of the patient's sperm cells. Subsequent whole-exome sequencing (WES) analysis identified a homozygous deletion within TSGA10 (c.211delG; p.A71Hfs*12), which resulted in the production of truncated TSGA10 protein...
September 14, 2017: Clinical Genetics
https://www.readbyqxmd.com/read/28902924/molecular-analysis-of-cib4-gene-and-protein-in-kermani-sheep
#6
M R Mohammadabadi, A H D Jafari, F Bordbar
The human calcium- and integrin-binding protein (CIB) family is composed of CIB1, CIB2, CIB3, and CIB4 proteins and the CIB4 gene affects fertility. Kermani sheep is one of the most important breeds of Iranian sheep breeds. The aim of this study was to analyze for the first time molecular characteristics of the CIB4 gene and protein in Kermani sheep. Different tissues were collected from the Kermani sheep and real time PCR was performed. The PCR products were sequenced, comparative analyses of the nucleotide sequences were performed, a phylogenetic tree was constructed, and different characteristics of CIB4 proteins were predicted...
September 12, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28891906/first-in-human-treatment-with-a-dendritic-cell-targeting-lentiviral-vector-expressing-ny-eso-1-lv305-induces-deep-durable-response-in-refractory-metastatic-synovial-sarcoma-patient
#7
Seth M Pollack, Hailing Lu, Sacha Gnjatic, Neeta Somaiah, Ryan B O'Malley, Robin L Jones, Frank J Hsu, Jan Ter Meulen
Effective induction of antitumor T cells is a pivotal goal of cancer immunotherapy. To this end, lentiviral vectors (LV) are uniquely poised to directly prime CD8 T-cell responses via transduction of dendritic cells in vivo and have shown promise as active cancer therapeutics in preclinical tumor models. However, until now, significant barriers related to production and regulation have prevented their widespread use in the clinic. We developed LV305, a dendritic cell-targeting, integration-deficient, replication incompetent LV from the ZVex platform, encoding the full-length cancer-testis antigen NY-ESO-1...
October 2017: Journal of Immunotherapy
https://www.readbyqxmd.com/read/28887675/how-bad-is-aluminum-exposure-to-reproductive-parameters-in-rats
#8
Viviane G S Mouro, Tatiana P Menezes, Graziela D A Lima, Rafael R Domingues, Ana Cláudia F Souza, Juraci A Oliveira, Sérgio L P Matta, Mariana Machado-Neves
Aluminum (Al) is the most widely distributed metal in the environment and is extensively used in human daily life without any known biological function. It is known that exposure to high concentrations of Al impacts negatively on serum testosterone levels, testicular histomorphometry, and sperm parameters; however, no information is available about the effects of low exposure levels on reproduction. International organizations have established the Al concentration tolerated in drinking water as 3.35 × 10(-4) mg/kg...
September 8, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28878076/zika-virus-infects-human-sertoli-cells-and-modulates-the-integrity-of-the-in-vitro-blood-testis-barrier-model
#9
David N Siemann, Daniel P Strange, Payal N Maharaj, Pei-Yong Shi, Saguna Verma
Confirmed reports of ZIKV in human seminal fluid for months after the clearance of viremia suggest the ability of ZIKV to establish persistent infection in the seminiferous tubules, an immune privileged site in the testis protected by the blood-testis barrier, also called the Sertoli cell barrier (SCB). However, cellular targets of ZIKV in human testis and mechanisms by which the virus enters seminiferous tubules remain unclear. We demonstrate that primary human SCs were highly susceptible to ZIKV as compared to the closely related dengue virus and induced expression of IFN-α, key cytokines and cell-adhesion molecules (VCAM-1 and ICAM-1)...
September 6, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28871060/hydroxysteroid-dehydrogenase-hsd1l-is-localised-to-the-pituitary-gonadal-axis-of-primates
#10
A Daniel Bird, Spencer Greatorex, David Reser, Gareth G Lavery, Timothy J Cole
Steroid hormones play clinically important and specific regulatory roles in the development, growth, metabolism, reproduction and brain function in human. The type 1 and 2 11-beta hydroxysteroid dehydrogenase enzymes (11β-HSD1 and 2) have key roles in the pre-receptor modification of glucocorticoids allowing aldosterone regulation of blood pressure, control of systemic fluid and electrolyte homeostasis and modulation of integrated metabolism and brain function. Although the activity and function of 11β-HSDs is thought to be understood, there exists an open reading frame for a distinct 11βHSD-like gene; HSD11B1L, which is present in human, non-human primate, sheep, pig and many other higher organisms, whereas an orthologue is absent in the genomes of mouse, rat and rabbit...
October 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28868245/isolation-culture-and-characterization-of-human-sertoli-cells-by-flow-cytometry-development-of-procedure
#11
Mohammad Reza Lakpour, Samaneh Aghajanpour, Morteza Koruji, Abdolhossein Shahverdi, Mohammad Ali Sadighi-Gilani, Marjan Sabbaghian, Reza Aflatoonian, Majid Rajabian-Naghandar
BACKGROUND: The sertoli cells in the testis create unique and safe environment to protect seminiferous tubules from auto antigens and invading pathogens. These cells produce the survival factor of the blood-testis barrier and produce special materials such as androgen binding proteins and contribute to the coordinated action of spermatogenesis. Given that the sertoli cells play an essential role in spermatogenesis and the lack of these cells leads to the disruption of spermatogenesis, it is necessary to investigate the behavior and performance of these cells...
April 2017: Journal of Reproduction & Infertility
https://www.readbyqxmd.com/read/28855394/an-in-vivo-genetic-screen-in-drosophila-identifies-the-orthologue-of-human-cancer-testis-gene-spo11-among-a-network-of-targets-to-inhibit-lethal-3-malignant-brain-tumour-growth
#12
Fabrizio Rossi, Cristina Molnar, Kazuya Hashiyama, Jan P Heinen, Judit Pampalona, Salud Llamazares, José Reina, Tomomi Hashiyama, Madhulika Rai, Giulia Pollarolo, Ismael Fernández-Hernández, Cayetano Gonzalez
Using transgenic RNAi technology, we have screened over 4000 genes to identify targets to inhibit malignant growth caused by the loss of function of lethal(3)malignant brain tumour in Drosophila in vivo We have identified 131 targets, which belong to a wide range of gene ontologies. Most of these target genes are not significantly overexpressed in mbt tumours hence showing that, rather counterintuitively, tumour-linked overexpression is not a good predictor of functional requirement. Moreover, we have found that most of the genes upregulated in mbt tumours remain overexpressed in tumour-suppressed double-mutant conditions, hence revealing that most of the tumour transcriptome signature is not necessarily correlated with malignant growth...
August 2017: Open Biology
https://www.readbyqxmd.com/read/28842508/two-modes-of-targeting-transposable-elements-by-pirna-pathway-in-human-testis
#13
Ildar Gainetdinov, Yulia Skvortsova, Sofia Kondratieva, Sergey Funikov, Tatyana Azhikina
PIWI proteins and their partner small RNAs, termed piRNAs, are known to control transposable elements (TEs) in the germline. Here, we provide evidence that in humans this control is exerted in two different modes. On the one hand, production of piRNAs specifically targeting evolutionarily youngest TEs (L1HS, L1PA2-L1PA6, LTR12C, SVA) is present both at prenatal and postnatal stages of spermatogenesis and is performed without involvement of piRNA clusters. On the other hand, at postnatal stages, piRNAs deriving from pachytene clusters target "older" TEs and thus complement cluster-independent piRNA production to achieve relevant targeting of virtually all TEs expressed in postnatal testis...
August 25, 2017: RNA
https://www.readbyqxmd.com/read/28842431/testicular-cells-exhibit-similar-molecular-responses-to-cigarette-smoke-condensate-ex-vivo-and-in-vivo
#14
Prabagaran Esakky, Deborah A Hansen, Andrea M Drury, Paul Felder, Andrew Cusumano, Kelle H Moley
Male exposure to cigarette smoke is associated with seminal defects and with congenital anomalies and childhood cancers in offspring. In mice, paternal exposure to cigarette smoke condensate (CSC) causes molecular defects in germ cells and phenotypic effects in their offspring. Here we used an ex vivo testicular explant model and in vivo exposure to determine the concentration at which CSC impairs spermatogenesis and offspring development. We explanted testis tissue at postnatal day (P)5.5 and cultured it until P11...
August 24, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28838639/effect-of-acute-zika-virus-infection-on-sperm-and-virus-clearance-in-body-fluids-a-prospective-observational-study
#15
Guillaume Joguet, Jean-Michel Mansuy, Giulia Matusali, Safouane Hamdi, Marie Walschaerts, Lynda Pavili, Stefanie Guyomard, Nadia Prisant, Pierre Lamarre, Nathalie Dejucq-Rainsford, Christophe Pasquier, Louis Bujan
BACKGROUND: Evidence of human sexual transmission during Zika virus emergence is a matter of concern, particularly in procreation, but to date, kinetics of seminal shedding and the effects of infection on human reproductive function have not been described. To investigate the effects of Zika virus infection on semen and clearance of Zika virus from semen and body fluids, we aimed to study a cohort of Zika virus-infected men. METHODS: This prospective observational study recruited men presenting with acute Zika virus infection at Pointe-à-Pitre University Hospital in Guadeloupe, French Caribbean, where a Zika virus outbreak occurred between April and November, 2016...
August 21, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28837588/culture-induced-recurrent-epigenetic-aberrations-in-human-pluripotent-stem-cells
#16
Uri Weissbein, Omer Plotnik, Dan Vershkov, Nissim Benvenisty
Human pluripotent stem cells (hPSCs) are an important player in disease modeling and regenerative medicine. Nonetheless, multiple studies uncovered their inherent genetic instability upon prolonged culturing, where specific chromosomal aberrations provide cells with a growth advantage. These positively selected modifications have dramatic effects on multiple cellular characteristics. Epigenetic aberrations also possess the potential of changing gene expression and altering cellular functions. In the current study we assessed the landscape of DNA methylation aberrations during prolonged culturing of hPSCs, and defined a set of genes which are recurrently hypermethylated and silenced...
August 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28834550/osteocalcin-dependent-regulation-of-glucose-metabolism-and-fertility-skeletal-implications-for-the-development-of-insulin-resistance
#17
REVIEW
Pawanrat Tangseefa, Sally K Martin, Stephen Fitter, Paul A Baldock, Christopher G Proud, Andrew Cw Zannettino
The skeleton has recently emerged as a critical insulin target tissue that regulates whole body glucose metabolism and male reproductive function. While our understanding of these new regulatory axes remains in its infancy, the bone-specific protein, osteocalcin, has been shown to be centrally involved. Undercarboxylated osteocalcin acts as a secretagogue in a feed-forward loop to stimulate pancreatic β-cell proliferation and insulin secretion, improve insulin sensitivity and promote testosterone production...
August 23, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28832583/deciphering-hla-i-motifs-across-hla-peptidomes-improves-neo-antigen-predictions-and-identifies-allostery-regulating-hla-specificity
#18
Michal Bassani-Sternberg, Chloé Chong, Philippe Guillaume, Marthe Solleder, HuiSong Pak, Philippe O Gannon, Lana E Kandalaft, George Coukos, David Gfeller
The precise identification of Human Leukocyte Antigen class I (HLA-I) binding motifs plays a central role in our ability to understand and predict (neo-)antigen presentation in infectious diseases and cancer. Here, by exploiting co-occurrence of HLA-I alleles across ten newly generated as well as forty public HLA peptidomics datasets comprising more than 115,000 unique peptides, we show that we can rapidly and accurately identify many HLA-I binding motifs and map them to their corresponding alleles without any a priori knowledge of HLA-I binding specificity...
August 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28827392/spermatogonial-kinetics-in-the-human
#19
Sara Di Persio, Rossana Saracino, Stefania Fera, Barbara Muciaccia, Valentina Esposito, Carla Boitani, Bartolomeo P Berloco, Francesco Nudo, Gustavo Spadetta, Mario Stefanini, Dirk G de Rooij, Elena Vicini
The human spermatogonial compartment is essential for daily production of millions of sperm. Despite this crucial role, the molecular signature, kinetic behavior and regulation of human spermatogonia are poorly understood. Using human testis biopsies with normal spermatogenesis and studying marker protein expression, for the first time we identified different subpopulations of spermatogonia. MAGE-A4 marks all spermatogonia, KIT marks all B spermatogonia and UCLH1 all Apale-dark (Ap-d) spermatogonia. We suggest that at the start of the spermatogenic lineage there are Ap-d spermatogonia that are GFRA1(High) likely including the spermatogonial stem cells...
August 21, 2017: Development
https://www.readbyqxmd.com/read/28827310/isolation-and-characterization-of-string-forming-female-germline-stem-cells-from-ovaries-of-neonatal-mice
#20
Jing Liu, Dantong Shang, Yao Xiao, Pei Zhong, Hanhua Cheng, Rongjia Zhou
Germline stem cells are essential in the generation of both male and female gametes. In mammals, the male testis produces sperm throughout the entire lifetime, facilitated by testicular germline stem cells. Oocyte renewal ceases in postnatal or adult life in mammalian females, suggesting that germline stem cells are absent from the mammalian ovary. However, studies in mice, rats, and humans have recently provided evidence for ovarian female germline stem cells (FGSCs). A better understanding of the role of FGSCs in ovaries could help improve fertility treatments...
August 21, 2017: Journal of Biological Chemistry
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