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https://www.readbyqxmd.com/read/28454475/oridonin-induces-g2-m-cell-cycle-arrest-and-apoptosis-via-the-pi3k-akt-signaling-pathway-in-hormone-independent-prostate-cancer-cells
#1
Jianlei Lu, Xiang Chen, Shuang Qu, Bing Yao, Yuexin Xu, Jiahui Wu, Yucui Jin, Changyan Ma
Oridonin is an active constituent isolated from the traditional Chinese herb Rabdosia rubescens, which exerts antitumor effects in experimental and clinical settings. However, its antitumor effects and underlying mechanisms on prostate cancer cells have not yet been clearly identified. In the present study, the androgen-independent prostate cancer PC3 and DU145 cell lines were used as models to investigate the effects and possible mechanisms of oridonin on cellular proliferation and apoptosis. Results demonstrated that oridonin inhibited cellular proliferation, and was able to significantly induce G2/M cell cycle arrest and apoptosis...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454436/satb1-promotes-epithelial-mesenchymal-transition-and-metastasis-in-prostate-cancer
#2
Honggang Qi, Xinyang Fu, Yeping Li, Xiang Pang, Sansan Chen, Xiaojun Zhu, Fei Li, Wanlong Tan
Special AT-rich sequence-binding protein-1 (SATB1) is associated with cancer progression and poor clinical outcome. The present study aims to evaluate whether SATB1 affects the biological behaviors of prostate cancer (PCa), and furthermore, to elucidate whether this effect works through the epithelial-mesenchymal transition (EMT) pathway. Firstly, the expression of SATB1 was investigated in a series of PCa tissues as well as in a panel of PCa cell lines. Cell proliferation, migration and invasion were evaluated in SATB1 knockdown and overexpressed PCa cell lines by MTT and Transwell assays...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454424/association-between-polymorphisms-in-tp53-and-mdm2-genes-and-susceptibility-to-prostate-cancer
#3
Mohammad Hashemi, Shadi Amininia, Mahboubeh Ebrahimi, Nasser Simforoosh, Abbas Basiri, Seyed Amir Mohsen Ziaee, Behzad Narouie, Mehdi Sotoudeh, Mohammad Javad Mollakouchekian, Esmaeil Rezghi Maleki, Hamideh Hanafi-Bojd, Maryam Rezaei, Gholamreza Bahari, Mohsen Taheri, Saeid Ghavami
Tumor protein 53 (TP53), a tumor suppressor gene, is a vital cellular cancer suppressor in multicellular organisms. Murine double minute-2 (MDM2) is an oncoprotein that inhibits TP53 activity. A number of studies have examined the association of TP53 and MDM2 polymorphisms with the risk of common forms of cancer, but the findings remain inconclusive. The present study aimed to evaluate the impact of the 40-bp insertion/deletion (I/D) polymorphism (rs3730485) in the MDM2 promoter region and the 16-bp I/D polymorphism (rs17878362) in TP53 on the susceptibility of prostate cancer (PCa) in a sample of the Iranian population...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454349/low-serum-testosterone-is-associated-with-tumor-aggressiveness-and-poor-prognosis-in-prostate-cancer
#4
Huakang Tu, Jian Gu, Qing H Meng, Jeri Kim, Sara Strom, John W Davis, Yonggang He, Elizabeth A Wagar, Timothy C Thompson, Christopher J Logothetis, Xifeng Wu
Serum testosterone is a potential marker to distinguish between indolent and aggressive prostate cancer (PCa). The present study aimed to investigate whether low levels of total serum testosterone at diagnosis were associated with aggressive PCa and poor clinical outcomes. In total, 762 non-Hispanic Caucasian men with previously untreated PCa were recruited from The University of Texas MD Anderson Cancer Center (Houston, TX, USA). Patients were categorized into three groups based on their total serum testosterone levels according to clinical guidelines [low (<230 ng/dl), intermediate (230-350 ng/dl) and normal (>350 ng/dl)]...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454339/puma-decreases-the-growth-of-prostate-cancer-pc-3-cells-independent-of-p53
#5
Zhengfei Shan, Qingzuo Liu, Yuling Li, Jitao Wu, Dekang Sun, Zhenli Gao
PUMA (p53 upregulated modulator of apoptosis), a member of the B-cell lymphoma 2 (Bcl-2) protein family, is a pro-apoptotic protein. PUMA expression is modulated by the tumor suppressor p53. PUMA has a role in rapid cell death via p53-dependent and -independent mechanisms. To evaluate whether p53 is required for PUMA-mediated apoptosis in prostate cancer cells, p53 protein was silenced in human prostate cancer PC-3 cells by using p53 small interfering RNA (siRNA). The interference efficiency of p53 on RNA and protein levels was detected by reverse transcription-quantitative polymerase chain reaction and western blotting...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454301/immunohistochemical-profile-of-ing3-protein-in-normal-and-cancerous-tissues
#6
Wen-Feng Gou, Xue-Feng Yang, Dao-Fu Shen, Shuang Zhao, Hong-Zhi Sun, Jun-Sheng Luo, Hua-Chuan Zheng
The inhibitor of growth family, member 3 (ING3) protein may be capable of blocking the cell cycle via activating p53-transactivated promoters of p21 and Bcl2-associated X protein, and may induce apoptosis via a Fas/caspase-8-dependent signaling pathway. In the present study, immunohistochemistry was performed in order to characterize the expression profile of ING3 protein in tissue microarrays containing mouse and human normal tissue, human hepatocellular (n=62), renal clear cell (n=62), pancreatic (n=62), esophageal squamous cell (n=45), cervical squamous cell (n=31), breast (n=144), gastric (n=196), colorectal (n=96), ovarian (n=208), endometrial (n=96) and lung carcinoma (n=192)...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454286/suspected-tumor-to-meningioma-metastasis-a-case-report
#7
Iuri Santana Neville, Davi Fontoura Solla, Arthur Maynart Oliveira, Cesar Casarolli, Manoel Jacobsen Teixeira, Wellingson Silva Paiva
Tumor-to-meningioma metastasis (TMM) is a fairly uncommon phenomenon. Only 7 cases of prostate cancer with TMM have previously been described in the literature. The present study aimed to report a case of prostate cancer TMM, and to discuss the relevant clinical and neuroimaging aspects of this condition. A 68-year-old patient presented with headaches, poor visual acuity in the left eye and ipsilateral eyelid droop 3 years after a Simpson II resection of a left sphenoid wing meningioma. Computed tomography revealed a hyperdense area suggestive of a recurrent left sphenoid wing meningioma...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454225/js-k-promotes-apoptosis-by-inducing-ros-production-in-human-prostate-cancer-cells
#8
Mingning Qiu, Lieqian Chen, Guobin Tan, Longzhi Ke, Sai Zhang, Hege Chen, Jianjun Liu
Reactive oxygen species (ROS) are chemical species that alter redox status, and are responsible for inducing carcinogenesis. The purpose of the present study was to assess the effects of the glutathione S transferase-activated nitric oxide donor prodrug, JS-K, on ROS accumulation and on proliferation and apoptosis in human prostate cancer cells. Cell proliferation and apoptosis, ROS accumulation and the activation of the mitochondrial signaling pathway were measured. The results demonstrated that JS-K may inhibit prostate cancer cell growth in a dose- and time-dependent manner, and induce ROS accumulation and apoptosis in a dose-dependent manner...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454221/expression-of-inositol-requiring-enzyme-1%C3%AE-is-downregulated-in-colorectal-cancer
#9
Yalin Jiang, Yunfeng Zhou, Yufeng Zheng, Hong Guo, Lei Gao, Pan Chen, Dandan Feng, Ran Qi, Xiaozhen Li, Yongchao Chang, Fong-Fong Chu, Qiang Gao
The endoplasmic reticulum stress inositol-requiring enzyme (IRE) 1α/X-box binding protein (XBP) 1 signaling pathway is involved in the tumorigenesis of breast and prostate cancer. Mucin 2 (MUC2) protects colon tissues from the formation of tumors. In human colorectal cancer (CRC) the role of IRE1α, and its analogue, IRE1β, has yet to be elucidated. In the present study, the expression levels of IRE1α, IRE1β, un-spliced XBP1u, spliced XBP1s and MUC2 in surgically resected cancerous and adjacent non-cancerous tissues from patients with CRC were investigated...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454190/evaluation-of-the-effect-of-epilobium-angustifolium-aqueous-extract-on-lncap-cell-proliferation-in-in-vitro-and-in-vivo-models
#10
Jakub P Piwowarski, Barbara Bobrowska-Korczak, Iwona Stanisławska, Wojciech Bielecki, Robert Wrzesien, Sebastian Granica, Katarzyna Krupa, Anna K Kiss
Epilobium sp. are commonly used in traditional medicine in the treatment of early stages of benign prostatic hyperplasia and inflammation. It is suggested that a dominating constituent, oenothein B, is responsible for the extracts therapeutic effects. Several bioactivities were established for extracts and oenothein B in various in vitro models, but due to the questionable bioavailability of this dimeric macrocyclic ellagitannin, their significance in the in vivo effects remains unresolved. We have thus focused our attention on a complex comparative investigation of the in vitro and in vivo activities of phytochemically characterized Epilobium angustifolium aqueous extract and oenothein B on prostate cancer cells proliferation...
April 28, 2017: Planta Medica
https://www.readbyqxmd.com/read/28453706/somatic-brca2-bi-allelic-loss-in-the-primary-prostate-cancer-was-associated-to-objective-response-to-parpi-in-a-sporadic-crpc-patient
#11
N Romero-Laorden, E Piñeiro-Yañez, A Gutierrez-Pecharroman, M I Pacheco, E Calvo, F Al-Shahrour, E Castro, D Olmos
No abstract text is available yet for this article.
May 1, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28453701/an-exploratory-analysis-of-alkaline-phosphatase-lactate-dehydrogenase-and-prostate-specific-antigen-dynamics-in-the-phase-3-alsympca-trial-with-radium-223
#12
O Sartor, R E Coleman, S Nilsson, D Heinrich, S I Helle, J M O'Sullivan, N J Vogelzang, Ø Bruland, S Kobina, S Wilhelm, L Xu, M Shan, M W Kattan, C Parker
Background: Baseline clinical variables are prognostic for overall survival (OS) in patients with castration-resistant prostate cancer (CRPC). Their prognostic and predictive value with agents targeting bone metastases, such as radium-223, is not established. Patients and methods: The radium-223 ALSYMPCA trial enrolled patients with CRPC and symptomatic bone metastases. Prognostic potential of baseline variables was assessed using Cox models. Percentage changes in biomarker levels from baseline were evaluated during the trial period; changes from baseline to week 12 were evaluated for association with OS and surrogacy...
May 1, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28453693/racial-disparities-in-prostate-cancer-outcome-among-prostate-specific-antigen-screening-eligible-populations-in-the-united-states
#13
B A Mahal, Y-W Chen, V Muralidhar, A R Mahal, T K Choueiri, K E Hoffman, J C Hu, C J Sweeney, J B Yu, F Y Feng, S P Kim, C J Beard, N E Martin, Q-D Trinh, P L Nguyen
Background: In 2012, the United States Preventive Services Task Force (USPSTF) recommended against prostate-specific antigen (PSA) screening, despite evidence that Black men are at a higher risk of prostate cancer-specific mortality (PCSM). We evaluated whether Black men of potentially screening-eligible age (55-69 years) are at a disproportionally high risk of poor outcomes. Patients and methods: The SEER database was used to study 390 259 men diagnosed with prostate cancer in the United States between 2004 and 2011...
May 1, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28453464/ppargc1a-and-adipoq-polymorphisms-are-associated-with-aggressive-prostate-cancer-in-mexican-mestizo-men-with-overweight-or-obesity
#14
Patricia Canto, Jesús Benítez Granados, Guillermo Feria-Bernal, Ramón Mauricio Coral-Vázquez, Eduardo García-García, María Elena Tejeda, André Tapia, David Rojano-Mejía, Juan Pablo Méndez
BACKGROUND: Obesity constitutes a risk factor for the development of aggressive forms of prostate cancer. It has been proposed, that prostate cancer has a genetic predisposition and that PPARGC1A and ADIPOQ polymorphisms play a role in the development of this condition. OBJECTIVE: To analyse the association of two PPARGC1A and ADIPOQ polymorphisms as well as their haplotypes, with the development of aggressive prostate cancer in Mexican-Mestizo men with overweight or obesity...
April 19, 2017: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/28453432/multiregional-radiogenomic-assessment-of-prostate-microenvironments-with-multiparametric-mr-imaging-and-dna-whole-exome-sequencing-of-prostate-glands-with-adenocarcinoma
#15
Neema Jamshidi, Daniel J Margolis, Steven Raman, Jiaoti Huang, Robert E Reiter, Michael D Kuo
Purpose To assess the underlying genomic variation of prostate gland microenvironments of patients with prostate adenocarcinoma in the context of colocalized multiparametric magnetic resonance (MR) imaging and histopathologic assessment of normal and abnormal regions by using whole-exome sequencing. Materials and Methods Six patients with prostate adenocarcinoma who underwent robotic prostatectomy with whole-mount preservation of the prostate were identified, which enabled spatial mapping between preoperative multiparametric MR imaging and the gland...
April 28, 2017: Radiology
https://www.readbyqxmd.com/read/28449574/the-clinical-utilization-of-radiation-therapy-in-korea-between-2011-and-2015
#16
Young-Seok Seo, Mi-Sook Kim, Jin-Kyu Kang, Won-Il Jang, Hee Jin Kim, Chul Koo Cho, Hyung Jun Yoo, Eun Kyung Paik, Yu Jin Cha, Jae Sun Yoon
Purpose: The purpose of this study was to estimate the clinical utilization of radiation therapy (RT) in Korea between 2011 and 2015. Materials and Methods: We analyzed the claims data from the Health Insurance Review and Assessment Service (HIRA) to estimate the clinical utilization of RT. The source population consisted of all patients who had any of the International Classification of Diseases 10 (ICD-10) cancer diagnoses (C00-C97) and those with diagnostic codes D00-D48, who were also associated with at least one of the procedure codes related to RT...
April 25, 2017: Cancer Research and Treatment: Official Journal of Korean Cancer Association
https://www.readbyqxmd.com/read/28449236/discovery-of-lhrh-and-development-of-lhrh-analogs-for-prostate-cancer-treatment
#17
Andrew V Schally, Norman L Block, Ferenc G Rick
The discovery, isolation, elucidation of structure, synthesis, and initial testing of the neuropeptide hypothalamic luteinizing hormone-releasing hormone (LHRH), which regulates reproduction, is briefly described. The design, synthesis, and experimental and clinical testing of agonistic analogs of LHRH is extensively reviewed focusing on the development of new methods for the treatment of prostate cancer. Subsequent development of antagonistic analogs of LHRH is then faithfully recounted with special emphasis on therapy of prostate cancer and BPH...
April 27, 2017: Prostate
https://www.readbyqxmd.com/read/28449007/efficacy-of-stereotactic-body-radiotherapy-in-oligorecurrent-and-in-oligoprogressive-prostate-cancer-new-evidence-from-a-multicentric-study
#18
Luca Triggiani, Filippo Alongi, Michela Buglione, Beatrice Detti, Riccardo Santoni, Alessio Bruni, Ernesto Maranzano, Frank Lohr, Rolando D'Angelillo, Alessandro Magli, Alberto Bonetta, Rosario Mazzola, Nadia Pasinetti, Giulio Francolini, Gianluca Ingrosso, Fabio Trippa, Sergio Fersino, Paolo Borghetti, Paolo Ghirardelli, Stefano Maria Magrini
BACKGROUND: The aim of the present study is to evaluate the impact of metastases-directed stereotactic body radiotherapy in two groups of oligometastatic prostate cancer (PC) patients: oligorecurrent PC and oligoprogressive castration-resistant PC (oligo-CRPC). METHODS: Inclusion criteria of the present multicentre retrospective analysis were: (1) oligorecurrent PC, defined as the presence of 1-3 lesions (bone or nodes) detected with choline positron emission tomography or CT plus bone scan following biochemical recurrence; (2) oligo-CRPC, defined as metastases (bone or nodes) detected after a prostatic-specific antigen rise during androgen deprivation therapy (ADT)...
April 27, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28448495/dysregulation-of-inf2-mediated-mitochondrial-fission-in-spop-mutated-prostate-cancer
#19
Xiaofeng Jin, Jie Wang, Kun Gao, Pingzhao Zhang, Longfang Yao, Yan Tang, Lisha Tang, Jian Ma, Jiantao Xiao, Enceng Zhang, Jie Zhu, Bin Zhang, Shi-Min Zhao, Yao Li, Shancheng Ren, Haojie Huang, Long Yu, Chenji Wang
Next-generation sequencing of the exome and genome of prostate cancers has identified numerous genetic alternations. SPOP (Speckle-type POZ Protein) was one of the most frequently mutated genes in primary prostate cancer, suggesting SPOP is a potential driver of prostate cancer development and progression. However, how SPOP mutations contribute to prostate cancer pathogenesis remains poorly understood. SPOP acts as an adaptor protein of the CUL3-RBX1 E3 ubiquitin ligase complex that generally recruits substrates for ubiquitination and subsequent degradation...
April 27, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28448269/circulating-cell-free-micrornas-as-clinical-cancer-biomarkers
#20
REVIEW
Virginie Armand-Labit, Anne Pradines
MicroRNAs (miRNAs) are non-coding small RNAs that are master regulators of genic expression and consequently of many cellular processes. But their expression is often deregulated in human tumors leading to cancer development. Recently miRNAs were discovered in body fluids (serum, plasma and others) and their levels have often been reported to be altered in patients. Circulating miRNAs became one of the most promising biomarkers in oncology for early diagnosis, prognosis and therapeutic response prediction. Here we describe the origins and roles of miRNAs, and summarize the most recent studies focusing on their usefulness as cancer biomarkers in lung, breast, colon, prostate, ovary cancers and melanoma...
April 27, 2017: Biomolecular Concepts
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