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prostate cancer progression

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https://www.readbyqxmd.com/read/28718092/no-significant-impact-of-prior-treatment-profile-with-docetaxel-on-the-efficacy-of-cabazitaxel-in-japanese-patients-with-metastatic-castration-resistant-prostate-cancer
#1
Hideaki Miyake, Takayuki Sugiyama, Ryota Aki, Yuto Matsushita, Keita Tamura, Daisuke Motoyama, Toshiki Ito, Atsushi Otsuka
The objective of this study was to retrospectively analyze the oncological outcomes of Japanese patients with metastatic castration-resistant prostate cancer (mCRPC) who received cabazitaxel. This study included a total of 63 consecutive Japanese mCRPC patients treated with cabazitaxel following the failure of docetaxel, and assessed the prognostic significance of cabazitaxel therapy in these patients focusing on the association of efficacies between two taxane agents. After treatment with cabazitaxel (median 5 cycles), prostate-specific antigen (PSA) decline was observed in 39 patients (61...
August 2017: Medical Oncology
https://www.readbyqxmd.com/read/28717171/the-aspirin-metabolite-salicylate-inhibits-lysine-acetyltransferases-and-muc1-induced-epithelial-to-mesenchymal-transition
#2
Harvey R Fernandez, Sara K Lindén
MUC1 is a transmembrane mucin that can promote cancer progression, and its upregulation correlates with a worse prognosis in colon cancer. We examined the effects of overexpression of MUC1 in colon cancer cells, finding that it induced epithelial to mesenchymal transition (EMT), including enhanced migration and invasion, and increased Akt phosphorylation. When the clones were treated with the aspirin metabolite salicylate, Akt phosphorylation was decreased and EMT inhibited. As the salicylate motif is necessary for the activity of the lysine acetyltransferase (KAT) inhibitor anacardic acid, we hypothesized these effects were associated with the inhibition of KAT activity...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28714959/o-glcnacylation-modulates-bmi-1-protein-stability-and-potential-oncogenic-function-in-prostate-cancer
#3
Y Li, L Wang, J Liu, P Zhang, M An, C Han, Y Li, X Guan, K Zhang
The Polycomb group transcriptional repressor Bmi-1 often overexpressed and participated in stem cells self-renewal and tumorigenesis initiating of prostate cancer. In this progression, Bmi-1 protein was regulated by transcription and post-translational modifications (PTMs). Nobly, the underlying PTMs regulation of Bmi-1 is poorly known. Here we use co-immunoprecipitation show that in C4-2 cell line, Bmi-1 directly interacted with OGT which is the only known enzyme catalyzed the O-GlcNAcylation in human. Furthermore, we identified that Ser255 is the site for Bmi-1 O-GlcNAcylation, and O-GlcNAcylation promoted Bmi-1 protein stability and its oncogenic activity...
July 17, 2017: Oncogene
https://www.readbyqxmd.com/read/28714919/overcoming-oncogenic-mediated-tumor-immunity-in-prostate-cancer
#4
REVIEW
Geoffrey Bryant, Lin Wang, David J Mulholland
Immunotherapy is being tested intensively in clinical trials for prostate cancer; it includes immune checkpoint inhibition, prostate specific antigen (PSA) vaccines and dendritic cell-based strategies. Despite increasing evidence for clinical responses, the consensus of multiple trials is that prostate cancers are poorly responsive to immunotherapy. Prostate cancer has a high degree of pathological and genetic heterogeneity compared to other cancer types, which may account for immunotherapeutic resistance. This hypothesis also implies that select types of prostate tumors may be differentially responsive to immune-based strategies and that the clinical stage, pathological grade and underlying genetic landscape may be important criteria in identifying tumors that respond to immune therapies...
July 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28714371/high-expression-of-nucleobindin-2-is-associated-with-poor-prognosis-in-gastric-cancer
#5
Bolag Altan, Kyoichi Kaira, Shuichi Okada, Tsugumichi Saito, Eijiro Yamada, Halin Bao, Pinjie Bao, Kengo Takahashi, Takehiko Yokobori, Oyama Tetsunari, Masahiko Nishiyama, Masanobu Yamada
Nucleobindin 2 has been reported that its high expression is associated with poor outcome and promotes cell migration and lymph node metastasis in breast cancer, colon cancer, and prostate cancer. However, we aimed to investigate the nucleobindin 2 expression in gastric cancer tissues and adjacent non-tumor tissues and its potential relevance to clinicopathological factors and prognosis using immunohistochemical analysis. In our study, nucleobindin 2 level in gastric cancer tissues was higher than in non-tumor tissues...
July 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28713997/the-biological-functions-and-mechanism-of-mir%C3%A2-212-in-prostate-cancer-proliferation-migration-and-invasion-via-targeting-engrailed-2
#6
Yi Zhou, Zhigang Ji, Weigang Yan, Zhien Zhou, Hanzhong Li
Accumulating evidence indicates that Engrailed-2 (EN-2), which is a homeobox-containing transcription factor, act as a candidate oncogene in prostate cancer (PCa). Even though there are some treatments targeting EN-2, however, it is limited because the mechanism of EN-2 upregulation in PCa cells is still unknown. In this study, we investigate the role of miR‑212 on EN-2 expression and explored the mechanism of prostate cancer survival and metastasis. The relative expression levels of miR‑212 and EN-2 in PCa samples and adjacent normal tissues as well as in PCa cell lines were detected by using quantitative real-time PCR...
July 12, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28712484/relevance-of-dna-damage-repair-in-the-management-of-prostate-cancer
#7
Patricia Banks, Wen Xu, Declan Murphy, Paul James, Shahneen Sandhu
Recent insights into the genomic aberrations that underlie and drive prostate cancer have redoubled efforts to molecularly stratify treatments based on predictive markers. Approximately 23% of patients with metastatic castration-resistant prostate cancer exhibit somatic or germline aberrations in genes implicated in DNA repair, such as BRCA2, BRCA1, ATM, CHEK2, and PALB2, as well as mismatch repair genes. At least 10% of men with advanced disease have germline mutations in DNA-repair genes (DRG). The enrichment of DRG defects in metastatic disease compared with localized, primary tumors suggests a possible role in carcinogenesis, disease progression, and potentially accounts for a more aggressive phenotype...
June 27, 2017: Current Problems in Cancer
https://www.readbyqxmd.com/read/28712283/stereotactic-radiotherapy-of-the-prostate-fractionation-and-utilization-in-the-united-states
#8
Joseph P Weiner, David Schwartz, Meng Shao, Virginia Osborn, Kwang Choi, David Schreiber
PURPOSE: To analyze the utilization and fractionation of extreme hypofractionation via stereotactic body radiotherapy (SBRT) in the treatment of prostate cancer. MATERIALS AND METHODS: Data was analyzed on men diagnosed with localized prostate cancer between 2004-2012 and treated with definitive-intent radiation therapy, as captured in the National Cancer Database. This database is a hospital-based registry that collects an estimated 70% of all diagnosed malignancies in the United States...
June 2017: Radiation Oncology Journal
https://www.readbyqxmd.com/read/28711921/mir-30e-is-overexpressed-in-prostate-cancer-and-promotes-nf-%C3%AE%C2%BAb-mediated-proliferation-and-tumor-growth
#9
Shawn M Egan, Ellen Karasik, Leigh Ellis, Sandra O Gollnick
According to the CDC prostate cancer (CaP) has the highest incidence and second highest mortality rate amongst cancers in American men. Constitutive NF-κB activation is a hallmark of CaP and this pathway drives many pro-tumorigenic characteristics of CaP cells, including cell proliferation and survival. An activated NF-κB gene signature is predictive of CaP progression and biochemical recurrence following therapeutic intervention. However, the mechanisms that perpetuate NF-κB activation are incompletely understood...
June 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28711565/new-aspects-of-molecular-imaging-in-prostate-cancer
#10
Francesco Ceci, Paolo Castellucci, Juliano J Cerci, Stefano Fanti
Nowadays several new imaging modalities are available for investigating prostate cancer (PCa) such as magnet resonance imaging (MRI) in the form of whole body MRI and pelvic multiparametric MRI and positron emission tomography (PET) using choline as radiotracers. Nevertheless, these modalities proved sub-optimal accuracy for detecting PCa metastases, particularly in the recurrence setting. A new molecular probe targeting the prostate specific membrane antigen (PSMA) has been recently developed for PET imaging...
July 12, 2017: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/28711382/recreational-physical-activity-in-relation-to-prostate-cancer-specific-mortality-among-men-with-nonmetastatic-prostate-cancer
#11
Ying Wang, Eric J Jacobs, Susan M Gapstur, Maret L Maliniak, Ted Gansler, Marjorie L McCullough, Victoria L Stevens, Alpa V Patel
BACKGROUND: Large prospective cohort studies need to confirm the associations between recreational physical activity (PA), including the most common type-walking, and prostate cancer-specific mortality (PCSM) among prostate cancer patients. OBJECTIVE: To investigate the associations of recreational PA, reported before and after diagnosis, with PCSM, overall and by tumor risk category. DESIGN, SETTING, AND PARTICIPANTS: In a prospective cohort study conducted in the USA, men diagnosed with nonmetastatic prostate cancer between 1992/1993 and June 2011 were followed for mortality until 2012...
July 12, 2017: European Urology
https://www.readbyqxmd.com/read/28710322/retraction-grm1-is-an-androgen-regulated-gene-and-its-expression-correlates-with-prostate-cancer-progression-in-pre-clinical-models
#12
(no author information available yet)
No abstract text is available yet for this article.
July 15, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28710256/anatomic-and-molecular-imaging-in-prostate-cancer
#13
Eric T Miller, Amirali Salmasi, Robert E Reiter
Prostate cancer is characterized by a complex set of heterogeneous disease states. This review aims to describe how imaging has been studied within each specific state. As physicians transition into an era of precision medicine, multiparametric magnetic resonance imaging (mpMRI) is proving to be a powerful tool leading the way for a paradigm shift in the diagnosis and management of localized prostate cancer. With further research and development, molecular imaging modalities will likely change the way we approach recurrent and metastatic disease...
July 14, 2017: Cold Spring Harbor Perspectives in Medicine
https://www.readbyqxmd.com/read/28709945/punicalagin-a-polyphenol-from-pomegranate-fruit-induces-growth-inhibition-and-apoptosis-in-human-pc-3-and-lncap-cells
#14
Oluwatosin Adaramoye, Bettina Erguen, Bianca Nitzsche, Michael Höpfner, Klaus Jung, Anja Rabien
Prostate cancer (PCa) is an international health problem and search for its effective treatment is in progress. Punicalagin (PN), polyphenol from pomegranate fruit, is known to exhibit potent anticancer activity in lung, breast and cervical cells. However, there is paucity of information on its effect in PCa. This study evaluated anti-proliferative effects of PN and its effects on extrinsic pathway of apoptosis in PCa cells, and angiogenesis in chicken chorioallantoic membrane (CAM). Antioxidant activities of PN were determined by 2,2-diphenyl-1-picryhydrazyl (DPPH) radical scavenging and inhibition of lipid peroxidation (LPO) methods...
July 11, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28709888/biopsy-detected-gleason-pattern-5-is-associated-with-recurrence-metastasis-and-mortality-in-a-cohort-of-men-with-high-risk-prostate-cancer
#15
Sean P Stroup, Daniel M Moreira, Zinan Chen, Lauren Howard, Jonathan H Berger, Martha K Terris, William J Aronson, Matthew R Cooperberg, Christopher L Amling, Christopher J Kane, Stephen J Freedland
PURPOSE: To evaluate the relative risk of biochemical recurrence (BCR), metastasis, and death from prostate cancer contributed by biopsy Gleason pattern 5 among high-risk men with Gleason 8-10 disease in the Shared Equal Access Regional Cancer Hospital (SEARCH) cohort. PATIENTS AND METHODS: Men with biopsy Gleason sum 8-10 prostate cancer treated with radical prostatectomy were evaluated. The cohort was divided: Gleason 4+4 vs. those with any pattern 5 (i.e., Gleason 3+5, 5+3, 4+5, 5+4, and 5+5)...
July 11, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28708672/artemisinin-disrupts-androgen-responsiveness-of-human-prostate-cancer-cells-by-stimulating-the-26s-proteasome-mediated-degradation-of-the-androgen-receptor-protein
#16
Andrea M Steely, Jamin A Willoughby, Shyam N Sundar, Vasiliki I Aivaliotis, Gary L Firestone
Androgen receptor (AR) expression and activity is highly linked to the development and progression of prostate cancer and is a target of therapeutic strategies for this disease. We investigated whether the antimalarial drug artemisinin, which is a sesquiterpene lactone isolated from the sweet wormwood plant Artemisia annua, could alter AR expression and responsiveness in cultured human prostate cancer cell lines. Artemisinin treatment induced the 26S proteasome-mediated degradation of the receptor protein, without altering AR transcript levels, in androgen-responsive LNCaP prostate cancer cells or PC-3 prostate cancer cells expressing exogenous wild-type AR...
July 13, 2017: Anti-cancer Drugs
https://www.readbyqxmd.com/read/28707808/cytotoxic-necrotizing-factor-1-promotes-prostate-cancer-progression-through-activating-the-cdc42-pak1-axis
#17
Yaxiu Guo, Zhisong Zhang, Huiting Wei, Jingyu Wang, Junqiang Lv, Kai Zhang, Evan T Keller, Zhi Yao, Quan Wang
Uropathogenic Escherichia coli (UPEC) is the leading cause of urinary tract infections and plays a role in prostatic carcinogenesis and prostate cancer (PCa) progression. However, the mechanisms through which UPEC promotes PCa development and progression are unclear. Cytotoxic necrotizing factor 1 (CNF1) is one of the most important UPEC toxins and its role in PCa progression has never been studied. We found that UPEC-secreted CNF1 promoted the migration and invasion of PCa cells and PCa metastasis. In vitro studies showed that CNF1 promotes pro-migratory and pro-invasive activity through entering PCa cells and activating Cdc42, which subsequently induced PAK1 phosphorylation and upregulation of MMP-9 expression...
July 14, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28706133/serine-arginine-protein-kinase-1-srpk1-is-elevated-in-gastric-cancer-and-plays-oncogenic-functions
#18
Xiaotao Xu, Yuehua Wei, Shidong Wang, Man Luo, Heng Zeng
Serine-arginine protein kinase 1 (SRPK1) phosphorylates proteins involved in the regulation of several mRNA processing pathways including alternative splicing. SRPK1 has been reported to be over-expressed in multiple cancers including prostate, breast, lung and glioma. Several studies further identified that inhibition of SRPK1 showed tumor-suppressive effects, thus raising SRPK1 as a novel candidate chemotherapy target. Interestingly, SRPK1 plays tumor suppressing role in mouse embryonic fibroblasts, on that SRPK1-silencing induces cell transformation...
June 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28705714/aristeromycin-and-dznep-cause-growth-inhibition-of-prostate-cancer-via-induction-of-mir-26a
#19
Noriko Uchiyama, Yukiya Tanaka, Tomohiro Kawamoto
Most prostate cancers initially respond to androgen deprivation therapy, but then progress from androgen-dependent to androgen-independent prostate cancers. In the present study, a differential cytotoxicity screen of hormone-resistant prostate cancer LNCaP-hr cells and the parental LNCaP-FGC cells against normal MRC5 fibroblast cells, identified a small molecule compound, Aristeromycin (a derivative of 3-deazaneplanocin A (DZNeP)). The molecular target was shown to be S-adenosylhomocysteine hydrolase (AHCY), which catalyzes reversible hydrolysis of S-adenosylhomocysteine (SAH) to adenosine and L-homocysteine...
July 10, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28702693/-ultrasonography-of-the-prostate-gland-from-b%C3%A2-image-through-multiparametric-ultrasound-to-targeted-biopsy
#20
REVIEW
F Steinkohl, A Luger, J Bektic, F Aigner
BACKGROUND: Prostate cancer is the most frequent cancer in men. The diagnosis is normally achieved by a systematic prostate biopsy; however, this is a randomized approach by which a substantial number of significant carcinomas go undetected. For this reason, in recent years imaging techniques have been continuously developed, which enable visualization and therefore targeted biopsies. STANDARD PROCEDURE: The use of systematic biopsies is a standard procedure for the detection of prostate cancer...
July 12, 2017: Der Radiologe
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