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Androgen related genes

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https://www.readbyqxmd.com/read/28503943/transcriptional-profile-of-ethylene-glycol-monomethyl-ether-induced-testicular-toxicity-in-rats
#1
Takuya Matsuyama, Koichi Yabe, Chiharu Kuwata, Kazumi Ito, Yosuke Ando, Hiroshi Iida, Kazuhiko Mori
To clarify the molecular mechanism of ethylene glycol monomethyl ether (EGME)-induced testicular toxicity, the potential for EGME-related changes in transcript levels of genes including spermatocyte-specific genes was evaluated in the testis of rats given single dosing of EGME at 200, 600, or 2000 mg/kg. Furthermore, the contribution of decreased testicular testosterone on EGME-induced spermatocyte toxicity was investigated by comparing to transcriptional profile due to a testosterone synthesis inhibitor, ketoconazole (KET), at 30 or 300 mg/kg...
May 15, 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/28501025/effects-of-unintentional-pcbs-in-pigments-and-chemical-products-on-transcriptional-activity-via-aryl-hydrocarbon-and-nuclear-hormone-receptors
#2
Shinji Takeuchi, Katsunori Anezaki, Hiroyuki Kojima
In recent years, some pigments and chemical products have been reported to contain polychlorinated biphenyl (PCB) congeners as unintentional byproducts, and these have also been detected in residential environments from indoor air and house dust. In this study, using in vitro reporter gene assays, we characterized the agonistic and antagonistic activities of a total of 25 PCB congeners contained in pigments (PCB-1 to -16, -20, -35, -40, -52, -56, -77, -101, -126, and -153) against five nuclear hormone receptors, (estrogen receptor (ER) α/β, glucocorticoid receptor (GR), androgen receptor (AR), thyroid hormone receptor (TR) α1) and aryl hydrocarbon receptor (AhR)...
May 10, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28496006/gene-expression-signature-of-gleason-score-is-associated-with-prostate-cancer-outcomes-in-a-radical-prostatectomy-cohort
#3
Min A Jhun, Milan S Geybels, Jonathan L Wright, Suzanne Kolb, Craig April, Marina Bibikova, Elaine A Ostrander, Jian-Bing Fan, Ziding Feng, Janet L Stanford
Prostate cancer (PCa) is a leading cause of cancer-related mortality worldwide. Gleason score (GS) is one of the best predictors of PCa aggressiveness, but additional tumor biomarkers may improve its prognostic accuracy. We developed a gene expression signature of GS to enhance the prediction of PCa outcomes. Elastic net was used to construct a gene expression signature by contrasting GS 8-10 vs. ≤6 tumors in The Cancer Genome Atlas (TCGA) dataset. The constructed signature was then evaluated for its ability to predict recurrence and metastatic-lethal (ML) progression in a Fred Hutchinson (FH) patient cohort (N=408; NRecurrence=109; NMLprogression=27)...
April 26, 2017: Oncotarget
https://www.readbyqxmd.com/read/28489755/kennedy-disease-with-difficulty-in-differential-diagnosis-a-case-report
#4
Yating Chen, Peng Luo, Zhongli Li, Hengping Hu, Duobin Wu, Tingting Xu, Xingzuo Wang, Haiting Xie
RATIONALE: Kennedy disease (KD) is also known as spinal bulbar muscular dystrophy. As KD has similar symptoms with most neuromuscular diseases, so it is difficult to make a rapid diagnosis clinically. PATIENT CONCERNS: We report a case of a 43-year-old male with progressive limb proximal weakness without family history. Physical examination showed gynecomastia, erectile dysfunction, bilateral tendon reflex and quadriceps weakness, and tongue muscle atrophy. DIAGNOSES: Laboratory examination found increased creatine kinase, impaired glucose tolerance, and abnormal lactic acid values...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28488586/uridine-diphosphate-glucuronosyltransferase-2b15-d85y-gene-polymorphism-is-associated-with-lower-prostate-cancer-risk-a-systematic-review-and-meta-analysis
#5
Xiao Zhong, Jiayu Feng, Ya Xiao, Pingxian Wang, Qiming Fan, Ronghua Wu, Wengang Hu, Chibing Huang
UGT2B15 (uridine diphosphate-glucuronosyltransferase 2B15) catalyzes the conversion of lipophilic C19 steroid androgens such as dihydrotestosterone (DHT) into water-soluble metabolites that can be excreted. Studies of the association between the UGT2B15 gene D85Y polymorphism and prostate cancer have yielded contradictory results. We therefore systematically searched in the PubMed, EMBASE, Science Direct/Elsevier, CNKI, and Cochrane Library databases, and identified six relevant studies with which to perform a meta-analysis of the relation between UGT2B15 D85Y polymorphism and prostate cancer risk...
April 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/28487955/regulation-of-mrna-gene-expression-of-members-of-the-nf-%C3%AE%C2%BAb-transcription-factor-gene-family-by-angiotensin-ii-and-relaxin-2-in-normal-and-cancer-prostate-cell-lines
#6
Kamila Domińska, Karolina Kowalska, Zuzanna Elżbieta Matysiak, Elżbieta Płuciennik, Tomasz Ochędalski, Agnieszka Wanda Piastowska-Ciesielska
An increasing number of researchers are focusing on the influence of local peptide hormones such as angiotensin II (Ang II) and relaxin 2 (RLN2) in the regulation of inflammation and carcinogenesis. The interaction between the renin‑angiotensin system (RAS) and relaxin family peptide system (RFPS) is known to influence the proliferation, adhesion and migration of normal and cancer prostate cell lines. The aim of the present study was to evaluate changes in the expression of nuclear factor‑κB subunit 1 (NFKB1), nuclear factor‑κB subunit 2 (NFKB2), REL proto‑oncogene nuclear factor‑κB p65 subunit (REL), RELA proto‑oncogene nuclear factor‑κB subunit (RELA) and RELB proto‑oncogene nuclear factor‑κB subunit (RELB) mRNA caused by Ang II and RLN2...
June 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28487115/lncrna-hoxd-as1-regulates-proliferation-and-chemo-resistance-of-castration-resistant-prostate-cancer-via-recruiting-wdr5
#7
Peng Gu, Xu Chen, Ruihui Xie, Jinli Han, Weibin Xie, Bo Wang, Wen Dong, Changhao Chen, Meihua Yang, Junyi Jiang, Ziyue Chen, Jian Huang, Tianxin Lin
Castration-resistant prostate cancer (CRPC) that occurs after the failure of androgen deprivation therapy is the leading cause of deaths in prostate cancer patients. Thus, there is an obvious and urgent need to fully understand the mechanism of CRPC and discover novel therapeutic targets. Long noncoding RNAs (lncRNAs) are crucial regulators in many human cancers, yet their potential roles and molecular mechanisms in CRPC are poorly understood. In this study, we discovered that an lncRNA HOXD-AS1 is highly expressed in CRPC cells and correlated closely with Gleason score, T stage, lymph nodes metastasis, and progression-free survival...
May 6, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28485785/study-on-the-influence-of-metformin-on-castration-resistant-prostate-cancer-pc-3-cell-line-biological-behavior-by-its-inhibition-on-plc%C3%AE%C2%B5-gene-mediated-notch1-hes-and-androgen-receptor-signaling-pathway
#8
Y Yang, X-H Wu
OBJECTIVE: To study the regulation of metformin on the biological behaviors of the castration-resistant prostate cancer (CRPC) PC-3 cell such as proliferation, invasion, apoptosis through influencing Notch1/Hes and androgen receptor (AR) signaling pathway activity by its inhibition on the expression of PLCε gene. MATERIALS AND METHODS: Human prostate cancer-3 (PC-3) cell line was divided into PC-3 cell line (group A), PC-3 cell line + metformin (10 mM) (group B), PC-3 cell line + metformin (20 mM) (group C), PLCε gene knockout cell line (group D), PLCε knockout cell line + metformin (10 mM)_ (group E) and PLCε knockout cell line + metformin (20 mM) (group F), which were respectively tested at 24 h, 48 h and 72 h, and five duplicate wells were set at each time point in each group...
April 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28473532/novel-androgen-receptor-co-regulator-grhl2-exerts-both-oncogenic-and-anti-metastatic-functions-in-prostate-cancer
#9
Steve Paltoglou, Rajdeep Das, Scott L Townley, Theresa Hickey, Gerard Tarulli, Isabel Coutinho, Rayzel C Fernandes, Adrienne Hanson, Iza Denis, Jason Carroll, Scott M Dehm, Ganesh V Raj, Steve Plymate, Wayne D Tilley, Luke A Selth
Alterations to the expression and activity of androgen receptor (AR) co-regulators in prostate cancer is an important mechanism driving disease progression and therapy resistance. Using a novel proteomic technique, we identified a new AR co-regulator, the transcription factor Grainyhead-like 2 (GRHL2), and demonstrated its essential role in the oncogenic AR signaling axis. GRHL2 colocalized with AR in prostate tumors and was frequently amplified and upregulated in prostate cancer. Importantly, GRHL2 maintained AR expression in multiple prostate cancer model systems, was required for cell proliferation, enhanced AR's transcriptional activity, and co-located with AR at specific sites on chromatin to regulate genes relevant to disease progression...
May 4, 2017: Cancer Research
https://www.readbyqxmd.com/read/28473226/kennedy-disease-x-linked-recessive-bulbospinal-neuronopathy-a-comprehensive-review-from-pathophysiology-to-therapy
#10
REVIEW
G Querin, G Sorarù, P-F Pradat
Kennedy's disease, also known as spinal and bulbar muscular atrophy (SBMA), is a rare, adult-onset, X-linked recessive neuromuscular disease caused by expansion of a CAG repeat sequence in exon 1 of the androgen receptor gene (AR) encoding a polyglutamine (polyQ) tract. The polyQ-expanded AR accumulates in nuclei, and initiates degeneration and loss of motor neurons and dorsal root ganglia. While the disease has long been considered a pure lower motor neuron disease, recently, the presence of major hyper-creatine-kinase (CK)-emia and myopathic alterations on muscle biopsy has suggested the presence of a primary myopathy underlying a wide range of clinical manifestations...
May 1, 2017: Revue Neurologique
https://www.readbyqxmd.com/read/28467491/the-gene-expression-profile-of-a-drug-metabolism-system-and-signal-transduction-pathways-in-the-liver-of-mice-treated-with-tert-butylhydroquinone-or-3-3-tert-butyl-4-hydroxyphenyl-propylthiosulfonate-of-sodium
#11
Alexandra B Shintyapina, Valentin A Vavilin, Olga G Safronova, Vyacheslav V Lyakhovich
Tert-butylhydroquinone (tBHQ) is a highly effective phenolic antioxidant used in edible oils and fats in foods as well as in medicines and cosmetics. TBHQ has been shown to have both chemoprotective and carcinogenic effects. Furthermore, it has potential anti-inflammatory, antiatherogenic, and neuroprotective activities. TBHQ induces phase II detoxification enzymes via the Keap1/Nrf2/ARE mechanism, which contributes to its chemopreventive functions. Nonetheless, there is growing evidence that biological effects of tBHQ may be mediated by Nrf2-independent mechanisms related to various signaling cascades...
2017: PloS One
https://www.readbyqxmd.com/read/28465491/discovery-and-characterization-of-small-molecules-targeting-the-dna-binding-ets-domain-of-erg-in-prostate-cancer
#12
Miriam S Butler, Mani Roshan-Moniri, Michael Hsing, Desmond Lau, Ari Kim, Paul Yen, Marta Mroczek, Mannan Nouri, Scott Lien, Peter Axerio-Cilies, Kush Dalal, Clement Yau, Fariba Ghaidi, Yubin Guo, Takeshi Yamazaki, Sam Lawn, Martin E Gleave, Cheryl Y Gregory-Evans, Lawrence P McIntosh, Michael E Cox, Paul S Rennie, Artem Cherkasov
Genomic alterations involving translocations of the ETS-related gene ERG occur in approximately half of prostate cancer cases. These alterations result in aberrant, androgen-regulated production of ERG protein variants that directly contribute to disease development and progression. This study describes the discovery and characterization of a new class of small molecule ERG antagonists identified through rational in silico methods. These antagonists are designed to sterically block DNA binding by the ETS domain of ERG and thereby disrupt transcriptional activity...
April 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28455626/influences-of-flavones-on-cell-viability-and-camp-dependent-steroidogenic-gene-regulation-in-ma-10-leydig-cells
#13
Michelle Cormier, Firas Ghouili, Pauline Roumaud, William Bauer, Mohamed Touaibia, Luc J Martin
Testicular Leydig cells are major contributors of androgen synthesis and secretion, which play an important role in testis development, normal masculinization, maintenance of spermatogenesis, and general male fertility. The rate-limiting step in testosterone biosynthesis involves the transfer of cholesterol to the mitochondrial inner membrane by the steroidogenic acute regulatory (Star) protein, a critical factor in steroid hormone biosynthesis. Once inside the mitochondria, cholesterol is metabolized by the steroidogenic enzyme Cyp11a1 to pregnenolone, which is further converted to testosterone by the action of other steroidogenic enzymes...
April 28, 2017: Cell Biology and Toxicology
https://www.readbyqxmd.com/read/28443016/genetics-of-aggression-in-alzheimer-s-disease-ad
#14
Walter J Lukiw, Evgeny I Rogaev
Alzheimer's disease (AD) is a terminal, age-related neurological syndrome exhibiting progressive cognitive and memory decline, however AD patients in addition exhibit ancillary neuropsychiatric symptoms (NPSs) and these include aggression. In this communication we provide recent evidence for the mis-regulation of a small family of genes expressed in the human hippocampus that appear to be significantly involved in expression patterns common to both AD and aggression. DNA array- and mRNA transcriptome-based gene expression analysis and candidate gene association and/or genome-wide association studies (CGAS, GWAS) of aggressive attributes in humans have revealed a surprisingly small subset of six brain genes that are also strongly associated with altered gene expression patterns in AD...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28439080/ets-related-gene-mediated-androgen-receptor-aggregation-and-endoplasmic-reticulum-stress-in-prostate-cancer-development
#15
Taduru L Sreenath, Shiela S Macalindong, Natallia Mikhalkevich, Shashwat Sharad, Ahmed Mohamed, Denise Young, Talaibek Borbiev, Charles Xavier, Rishita Gupta, Muhammad Jamal, Kevin Babcock, Shyh-Han Tan, Marja T Nevalainen, Albert Dobi, Gyorgy Petrovics, Isabell A Sesterhenn, Inger L Rosner, Charles J Bieberich, Peter Nelson, Valeri Vasioukhin, Shiv Srivastava
Mechanistic studies of deregulated ERG in prostate cancer and other cancers continue to enhance its role in cancer biology and its utility as a biomarker and therapeutic target. Here, we show that ERG, through its physical interaction with androgen receptor, induces AR aggregation and endoplasmic reticulum stress in the prostate glands of ERG transgenic mice. Histomorphological alterations and the expression of ER stress sensors Atf6, Ire1α, Perk, their downstream effectors Grp78/BiP and eIF2α in ERG transgenic mouse prostate glands indicate the presence of chronic ER stress...
April 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28439009/estrogen-receptor-%C3%AE-a-regulator-of-androgen-receptor-signaling-in-the-mouse-ventral-prostate
#16
Wan-Fu Wu, Laure Maneix, Jose Insunza, Ivan Nalvarte, Per Antonson, Juha Kere, Nancy Yiu-Lin Yu, Virpi Tohonen, Shintaro Katayama, Elisabet Einarsdottir, Kaarel Krjutskov, Yu-Bing Dai, Bo Huang, Wen Su, Margaret Warner, Jan-Åke Gustafsson
As estrogen receptor β(-/-) (ERβ(-/-)) mice age, the ventral prostate (VP) develops increased numbers of hyperplastic, fibroplastic lesions and inflammatory cells. To identify genes involved in these changes, we used RNA sequencing and immunohistochemistry to compare gene expression profiles in the VP of young (2-mo-old) and aging (18-mo-old) ERβ(-/-) mice and their WT littermates. We also treated young and old WT mice with an ERβ-selective agonist and evaluated protein expression. The most significant findings were that ERβ down-regulates androgen receptor (AR) signaling and up-regulates the tumor suppressor phosphatase and tensin homolog (PTEN)...
April 24, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28415728/lipid-degradation-promotes-prostate-cancer-cell-survival
#17
Harri M Itkonen, Michael Brown, Alfonso Urbanucci, Gregory Tredwell, Chung Ho Lau, Stefan Barfeld, Claire Hart, Ingrid J Guldvik, Mandeep Takhar, Hannelore V Heemers, Nicholas Erho, Katarzyna Bloch, Elai Davicioni, Rita Derua, Etienne Waelkens, James L Mohler, Noel Clarke, Johan V Swinnen, Hector C Keun, Ole P Rekvig, Ian G Mills
Prostate cancer is the most common male cancer and androgen receptor (AR) is the major driver of the disease. Here we show that Enoyl-CoA delta isomerase 2 (ECI2) is a novel AR-target that promotes prostate cancer cell survival. Increased ECI2 expression predicts mortality in prostate cancer patients (p = 0.0086). ECI2 encodes for an enzyme involved in lipid metabolism, and we use multiple metabolite profiling platforms and RNA-seq to show that inhibition of ECI2 expression leads to decreased glucose utilization, accumulation of fatty acids and down-regulation of cell cycle related genes...
March 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28385422/compensatory-response-of-fathead-minnow-larvae-following-a-pulsed-in-situ-exposure-to-a-seasonal-agricultural-runoff-event
#18
Jonathan M Ali, Jodi L Sangster, Daniel D Snow, Shannon L Bartelt-Hunt, Alan S Kolok
Agriculturally-dominated waterways such as those found throughout the Midwestern United States often experience seasonal pulses of agrichemical contaminants which pose a potential hazard to aquatic organisms at varying life stages. The objective of this study was to characterize the developmental plasticity of fathead minnow larvae in a natural environment subject to a seasonal episodic perturbation in the form of a complex mixture of agricultural stressors. Fathead minnow larvae were maintained at the Elkhorn River Research Station for a 28-d in situ exposure to an agrichemical pulse event...
April 3, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28379958/il-15-regulates-migration-invasion-angiogenesis-and-genes-associated-with-lipid-metabolism-and-inflammation-in-prostate-cancer
#19
Krizia Rohena-Rivera, María M Sánchez-Vázquez, Diana A Aponte-Colón, Ingrid S Forestier-Román, Mario E Quintero-Aguiló, Magaly Martínez-Ferrer
Prostate cancer (PCa) is the most commonly diagnosed non-cutaneous cancer. In the United States it is second leading cause of cancer related deaths in men. PCa is often treated via radical prostatectomy (RP). However, 15-30% of the patients develop biochemical recurrence (i.e. increased serum prostate specific antigen (PSA) levels). Interleukin-15 (IL-15) is a secreted cytokine found over expressed in patients with recurrence-free survival after RP. In our study, we aim to determine the role of IL-15 in PCa using in vitro and in vivo models, and gene expression analysis...
2017: PloS One
https://www.readbyqxmd.com/read/28341248/abnormal-lipid-lipoprotein-metabolism-and-high-plasma-testosterone-levels-in-male-but-not-female-aromatase-knockout-mice
#20
Akiko Amano, Yoshitaka Kondo, Yoshihiro Noda, Mitsuhiro Ohta, Noriaki Kawanishi, Shuichi Machida, Kazuteru Mitsuhashi, Takafumi Senmaru, Michiaki Fukui, Osamu Takaoka, Taisuke Mori, Jo Kitawaki, Masafumi Ono, Toshiji Saibara, Hiroshi Obayashi, Akihito Ishigami
Sex steroid hormones, such as estrogen and testosterone, are believed to play important roles in lipid metabolism. To elucidate the effects of estrogen depletion on lipid metabolism in male and female mice, we used aromatase-knockout (ArKO) mice, in which Cyp19 gene disruption prevented estrogen synthesis in vivo. These mice were divided into the following 4 groups: male and female ArKO mice and male and female wild-type (WT) mice. These mice were fed a normal-fat diet (13.6% fat) ad libitum. At 159 days after birth, the mice were tested for liver and plasma lipid content and hepatic hormone receptor- and lipid/lipoprotein metabolism-related gene expression...
May 15, 2017: Archives of Biochemistry and Biophysics
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