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https://www.readbyqxmd.com/read/28730785/pdcd1-strengthens-the-sensitivity-of-ovarian-cancer-to-cisplatin-chemotherapy-by-promoting-apoptosis
#1
Qian Li, Jie-Fan Gao, Bing-Li Qi
PURPOSE: The primary purpose of this study was to make clear the role of PDCD1 in the occurrence and progression of ovarian cancer, and explain its mechanism. METHODS: RT-PCR, westem blot, MTT and immunohistochemistry were used to detect the expression levels of PDCD1 mRNA and protein in human ovarian cancer cell lines (SKOV3, 3AO, CAOV3 and OVCAR3), human normal ovary, serous cystadenoma, and serous cystadenocarcinoma tissue. SKOV3, SKOV3-MOCK, and SKOV3-PDCD1 cells were subcutaneously injected into the armpit of nude mice to observe the effect of PDCD1 expression on tumorigenic ability...
May 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/28725636/epithelial-to-mesenchymal-transition-in-the-female-reproductive-tract-from-normal-functioning-to-disease-pathology
#2
REVIEW
Olena Bilyk, Mackenzie Coatham, Michael Jewer, Lynne-Marie Postovit
Epithelial-to-mesenchymal transition (EMT) is a physiological process that is vital throughout the human lifespan. In addition to contributing to the development of various tissues within the growing embryo, EMT is also responsible for wound healing and tissue regeneration later in adulthood. In this review, we highlight the importance of EMT in the development and normal functioning of the female reproductive organs (the ovaries and the uterus) and describe how dysregulation of EMT can lead to pathological conditions, such as endometriosis, adenomyosis, and carcinogenesis...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28722325/polymer-mediated-flocculation-of-transient-cho-cultures-as-a-simple-high-throughput-method-to-facilitate-antibody-discovery
#3
Matthew G Schmitt, Yashas Rajendra, Maria D Hougland, Jeffrey S Boyles, Gavin C Barnard
Most biopharmaceutical drugs, especially monoclonal antibodies (mAbs), bispecific antibodies (BsAbs) and Fc-fusion proteins, are expressed using Chinese Hamster Ovary (CHO) cell lines. CHO cells typically yield high product titers and high product quality. Unfortunately, CHO cell lines also generate high molecular weight (HMW) aggregates of the desired product during cell culture along with CHO host cell protein (HCP) and CHO DNA. These immunogenic species, co-purified during Protein A purification, must be removed in a multi-step purification process...
July 19, 2017: Biotechnology Progress
https://www.readbyqxmd.com/read/28719288/evaluation-of-the-protective-effect-of-deoxyribonucleic-acid-vaccines-encoding-granule-antigen-2-and-5-against-acute-toxoplasmosis-in-balb-c-mice
#4
Xiao Teng Ching, Mun Yik Fong, Yee Ling Lau
AbstractToxoplasma gondii infects a broad range of warm-blooded hosts, including humans. Important clinical manifestations include encephalitis in immunocompromised patients as well as miscarriage and fetal damage during early pregnancy. Toxoplasma gondii dense granule antigen 2 and 5 (GRA2 and GRA5) are essential for parasitophorous vacuole development of the parasite. To evaluate the potential of GRA2 and GRA5 as recombinant DNA vaccine candidates, these antigens were cloned into eukaryotic expression vector (pcDNA 3...
June 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28717100/inhibitory-modulation-of-human-estrogen-receptor-%C3%AE-and-%C3%AE-activities-by-dicyclohexyl-phthalate-in-human-breast-cancer-cell-lines
#5
Hiroyuki Okazaki, Shuso Takeda, Saki Matsuo, Masaya Matsumoto, Erika Furuta, Eriko Kohro-Ikeda, Hironori Aramaki
Phthalate esters (PAEs) are man-made compounds that are used widely in industry, and the ubiquitous exposure of humans to PAEs has been reported. Although some PAEs have been suggested to function as xenoestrogens in in vitro systems, such as human estrogen receptors (ERs) expressed in Chinese hamster ovary (CHO)-K1 cells, few studies have attempted to elucidate whether PAEs affect human ERα/ERβ-mediated signaling in human breast cancer cells (i.e., combination between human ERs and human cells). Thus, further experiments are needed in order to clarify the activities of PAEs...
2017: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/28716446/dose-dependent-effect-of-resveratrol-in-preventing-cisplatin-induced-ovarian-damage-in-rats-an-experimental-study
#6
Mine Atli, Yaprak Engin-Ustun, Aytekin Tokmak, Muzaffer Caydere, Sema Hucumenoglu, Canan Topcuoglu
This study aimed to evaluate the effect of resveratrol in preventing cisplatin (CP) induced ovarian damage in rats. Twenty-eight female Wistar albino rats were separated into four groups. No medication was given to group 1. Over the 21-day study period, low-dose resveratrol was given to group 2, high-dose resveratrol was given to group 3, and saline was administered to group 4. On the 15th day of medication, all groups except for group 1 were treated with a single dose of CP. Serum levels of anti-Mullerian hormone (AMH) were tested at baseline and on the 15th and 21st days...
July 14, 2017: Reproductive Biology
https://www.readbyqxmd.com/read/28713914/systematic-identification-of-human-housekeeping-genes-possibly-useful-as-references-in-gene-expression-studies
#7
Maria Caracausi, Allison Piovesan, Francesca Antonaros, Pierluigi Strippoli, Lorenza Vitale, Maria Chiara Pelleri
The ideal reference, or control, gene for the study of gene expression in a given organism should be expressed at a medium‑high level for easy detection, should be expressed at a constant/stable level throughout different cell types and within the same cell type undergoing different treatments, and should maintain these features through as many different tissues of the organism. From a biological point of view, these theoretical requirements of an ideal reference gene appear to be best suited to housekeeping (HK) genes...
July 6, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28710511/cerebellar-degeneration-related-proteins-2-and-2-like-are-present-in-ovarian-cancer-in-patients-with-and-without-yo-antibodies
#8
Margrethe Raspotnig, Mette Haugen, Maria Thorsteinsdottir, Ingunn Stefansson, Helga B Salvesen, Anette Storstein, Christian A Vedeler
BACKGROUND: Cerebellar degeneration-related protein 2 (CDR2) has been presumed to be the main antigen for the onconeural antibody Yo, which is strongly associated with ovarian cancer and paraneoplastic cerebellar degeneration (PCD). Recent data show that Yo antibodies also target the CDR2-like protein (CDR2L). We, therefore, examined the expression of CDR2 and CDR2L in ovarian cancer tissue from patients with and without Yo antibodies and from various other cancerous and normal human tissues...
July 14, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28710265/francisella-like-endosymbionts-and-rickettsia-species-in-local-and-imported-hyalomma-ticks
#9
Tal Azagi, Eyal Klement, Gidon Perlman, Yaniv Lustig, Kosta Y Mumcuoglu, Dmitry Apanaskevich, Yuval Gottlieb
Hyalomma ticks (Acari: Ixodidae) are hosts for Francisella like endosymbionts (FLE) and may serve as vectors of zoonotic disease agents. This study was aimed to provide initial characterization of the interaction between Hyalomma and FLE and to determine the prevalence of pathogenic Rickettsia in these ticks. Hyalomma marginatum, H. rufipes, H. dromedarii, H. aegyptium and H. excavatum ticks, identified morphologically and molecularly, were collected from different hosts and locations, representing the genus distribution in Israel, as well as from migratory birds...
July 14, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28709956/activation-of-human-gonadotropin-releasing-hormone-receptor-promotes-down-regulation-of-arhgap18-and-regulates-the-cell-invasion-of-mda-mb-231%C3%A2-cells
#10
Arturo Aguilar-Rojas, Guadalupe Maya-Núñez, Maira Huerta-Reyes, Marco Allán Pérez-Solis, Raúl Silva-García, Nancy Guillén, Jean-Christophe Olivo-Marin
The Gonadotropin-Releasing Hormone Receptor (GnRHR) is expressed mainly in the gonadotrope membrane of the adenohypophysis and its natural ligand, the Gonadotropin-Releasing Hormone (GnRH), is produced in anterior hypothalamus. Furthermore, both molecules are also present in the membrane of cells derived from other reproductive tissues such as the breast, endometrium, ovary, and prostate, as well as in tumors derived from these tissues. The functions of GnRH receptor and its hormone in malignant cells have been related with the decrease of proliferation and the invasiveness of those tumors however, little is known about the molecules associated with the signaling pathways regulated by both molecules in malignant cells...
July 11, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28709873/deregulation-of-wnt2-fzd3-%C3%AE-catenin-pathway-compromises-the-estrogen-synthesis-in-cumulus-cells-from-patients-with-polycystic-ovary-syndrome
#11
Gu-Yuan Qiao, Bing-Wei Dong, Chao-Juan Zhu, Chang-You Yan, Bi-Liang Chen
Mechanistic insight into estrogen deficiency by polycystic ovary syndrome (PCOS) remains a longstanding challenge in reproductive medicine. Recent advance suggest that Wingless-type MMTV integration site family members (WNTs), in concert with its Frizzled (FZD) receptors, regulate normal folliculogenesis, luteogenesis and ovarian steroidogenesis. However, no studies have so far investigated any causality between WNT-FZDs interactions and disrupted estrogen synthesis under certain pathological conditions. Here, we show that (i) FZD3 expression was significantly up-regulated in the cumulus cells (CCs) from PCOS patients...
July 11, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28701684/expression-of-aldo-keto-reductase-family-1-member-c14-during-ovulation-in-the-rat
#12
Phuong T M Dam, You-Jee Jang, Ja-Yeon Kim, Seul-Gee Choi, Jae-Il Park, Young-Woo Seo, Sang-Young Chun
The potent androgen 5α-dihydrotestosterone is metabolized to the weak androgen 5α-androstane-3α, 17β-diol (3α-diol) by the enzyme aldo-keto reductase family 1, member C14 (Akr1c14) in rodents. The purpose of the present study was to investigate the regulation of Akr1c14 expression during the ovulatory process in rat ovaries. Northern blot analysis revealed that treatment of immature rats with equine chorionic gonadotropin resulted in lowered Akr1c14 expression, whereas subsequent treatment with human chorionic gonadotropin (hCG) increased ovarian Akr1c14 expression within 3 h...
July 11, 2017: Endocrine Journal
https://www.readbyqxmd.com/read/28699174/inherited-variation-in-circadian-rhythm-genes-and-risks-of-prostate-cancer-and-three-other-cancer-sites-in-combined-cancer-consortia
#13
Fangyi Gu, Han Zhang, Paula L Hyland, Sonja Berndt, Susan M Gapstur, William Wheeler, Christopher I Amos, Stephane Bezieau, Heike Bickeböller, Hermann Brenner, Paul Brennan, Jenny Chang-Claude, David V Conti, Jennifer Ann Doherty, Stephen B Gruber, Tabitha A Harrison, Richard B Hayes, Michael Hoffmeister, Richard S Houlston, Rayjean J Hung, Mark A Jenkins, Peter Kraft, Kate Lawrenson, James McKay, Sarah Markt, Lorelei Mucci, Catherine M Phelan, Conghui Qu, Angela Risch, Mary Anne Rossing, H-Erich Wichmann, Jianxin Shi, Eva Schernhammer, Kai Yu, Maria Teresa Landi, Neil E Caporaso
Circadian disruption has been linked to carcinogenesis in animal models, but the evidence in humans is inconclusive. Genetic variation in circadian rhythm genes provides a tool to investigate such associations. We examined associations of genetic variation in nine core circadian rhythm genes and six melatonin pathway genes with risk of colorectal, lung, ovarian and prostate cancers using data from the Genetic Associations and Mechanisms in Oncology (GAME-ON) network. The major results for prostate cancer were replicated in the Prostate, Lung, Colorectal and Ovarian (PLCO) cancer screening trial, and for colorectal cancer in the Genetics and Epidemiology of Colorectal Cancer Consortium (GECCO)...
July 12, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28693629/resveratrol-has-dose-dependent-effects-on-dna-fragmentation-and-mitochondrial-activity-of-ovine-secondary-follicles-cultured-in-vitro
#14
T J S Macedo, V R P Barros, A P O Monte, B B Gouveia, M É S Bezerra, A Y P Cavalcante, R S Barberino, V G Menezes, M H T Matos
The worldwide consumption of red wine, nuts and grapes has resulted in increased human exposure to resveratrol, which could affect reproductive function. However, the effect of resveratrol on in vitro culture of early-stage ovarian follicles has never been investigated. The aims of the present study were to evaluate the effect of resveratrol on sheep secondary follicle morphology, growth, DNA fragmentation, intracellular levels of glutathione (GSH) and active mitochondria. Secondary follicles were isolated from the ovaries and cultured for 18 days in supplemented α-MEM+ (control medium) or in control medium containing resveratrol (2, 10 or 30 µM)...
July 11, 2017: Zygote: the Biology of Gametes and Early Embryos
https://www.readbyqxmd.com/read/28690098/m%C3%A3-llerian-adenosarcoma-of-the-urinary-bladder-clinicopathologic-and-immunohistochemical-features-with-novel-genetic-aberrations
#15
Joseph Sanfrancesco, Sean R Williamson, Jennifer B Kum, Shaobo Zhang, Mingsheng Wang, Antonio Lopez-Beltran, Rodolfo Montironi, Thomas A Gardner, Liang Cheng
BACKGROUND: Müllerian adenosarcoma is a biphasic neoplasm most commonly occurring in the uterus and less frequently of the ovary. It has been rarely described to occur in other sites such as peritoneum and liver. PATIENTS AND METHODS: In this study, we report the clinicopathologic, immunohistochemical and molecular features of a primary Müllerian adenosarcoma of the urinary bladder in a 62-year-old woman. To our knowledge, this is the first report of detailed pathologic characterization of Müllerian adenosarcoma primary to the urinary bladder in the literature...
May 25, 2017: Clinical Genitourinary Cancer
https://www.readbyqxmd.com/read/28689806/cigarette-smoke-impaired-maturation-of-ovarian-follicles-and-normal-growth-of-uterus-inner-wall-of-female-wild-type-and-hypertensive-rats
#16
Hae-Miru Lee, Cho-Won Kim, Kyung-A Hwang, Jae-Hyuck Sung, Jin-Kyu Lee, Kyung-Chul Choi
Cigarette smoke (CS) is well known to be very harmful to human body functions such as fertility, reproduction, and development. CS is considered to more affect patients with hypertension (HT). To estimate the effect of CS associated with female rat's fertility, we examined the histopathological characteristics of the uterus and ovary which were obtained from the female rats exposed to smoke of the standard cigarette (3R4F) for 4 weeks (10h a week) according to the OECD guidelines. The female wild-type Wistar Kyoto (WK) rats (WTR) and spontaneously hypertensive WK rats (SHR) were used to compare the effect of CS on healthy and hypertensive rats...
July 6, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28689458/marmoset-pulmonary-cytochrome-p450-2f1-oxidizes-biphenyl-and-7-ethoxycoumarin-and-hepatic-human-p450-substrates
#17
Shotaro Uehara, Yasuhiro Uno, Toru Oshio, Takashi Inoue, Erika Sasaki, Hiroshi Yamazaki
1. A potentially useful animal model for preclinical studies is the common marmoset (Callithrix jacchus). In this study, using reverse-transcription polymerase chain reaction from marmoset livers, we identified a novel cytochrome P450 (P450) 2F1 cDNA with an open reading frame of 1473 bp. 2. High sequence identities of 92-94% with primate P450 2F amino acid sequences were indicated by deduced amino acid sequences of P450 2F1 cDNA. Phylogenetic analysis indicates that marmoset P450 2F1 is more congruent with primate P450 2F forms than those of other species such as rodents...
July 8, 2017: Xenobiotica; the Fate of Foreign Compounds in Biological Systems
https://www.readbyqxmd.com/read/28688281/novel-celastrol-derivatives-with-improved-selectivity-and-enhanced-antitumour-activity-design-synthesis-and-biological-evaluation
#18
Sandra A C Figueiredo, Jorge A R Salvador, Roldán Cortés, Marta Cascante
Celastrol is one of the most active antitumour compounds among the natural triterpenoids. It has been reported to be highly active against a wide variety of tumours and to affect multiple cellular pathways. A series of new celastrol derivatives, including compounds bearing a urea group, have been synthesised and analysed for their biological activity against human cancer cell lines. Several compounds presented a stronger growth inhibition effect than celastrol on the cell lines studied. Among them, compound 24 was the most promising derivative, as it exhibited both a remarkable antiproliferative activity and an improved selectivity in tumour versus non-tumour cells...
June 16, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28687618/huwe1-sustains-normal-ovarian-epithelial-cell-transformation-and-tumor-growth-through-the-histone-h1-3-h19-cascade
#19
Dong Yang, Bin Sun, Xiaohong Zhang, Daomei Cheng, Xiaoping Yu, Lanzhen Yan, Lei Li, Sanqi An, Hua Jiang, Anna Lasorella, Antonio Iavarone, Shu Zhang, Fangdong Zou, Xudong Zhao
Ubiquitination-directed protein degradation is important in many cancers for tumor initiation and maintenance, and E3 ligases containing HECT domains are emerging as new therapeutic targets. In contrast to many other E3 ligases, the role of HUWE1 in ovarian cancer where HUWE1 is dysregulated has been unclear. Here we report that genetic deletion of Huwe1 in the mouse inhibits transformation of ovary surface epithelium cells without significantly affecting cell survival and apoptosis, and that Huwe1 deletion after tumors have been initiated inhibits tumor growth...
July 7, 2017: Cancer Research
https://www.readbyqxmd.com/read/28687450/role-of-androgens-in-the-ovary
#20
REVIEW
K A Walters, D J Handelsman
It has been well established for decades that androgens, namely testosterone (T) plays an important role in female reproductive physiology as the precursor for oestradiol (E2). However, in the last decade a direct role for androgens, acting via the androgen receptor (AR), in female reproductive function has been confirmed. Deciphering the specific roles of androgens in ovarian function has been hindered as complete androgen resistant females cannot be generated by natural breeding. In addition, androgens can be converted into estrogens which has caused confusion when interpreting findings from pharmacological studies, as observed effects could have been mediated via the AR or estrogen receptor...
July 4, 2017: Molecular and Cellular Endocrinology
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