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https://www.readbyqxmd.com/read/27920552/the-relationship-between-the-expression-of-usp22-bmi1-and-ezh2-in-hepatocellular-carcinoma-and-their-impacts-on-prognosis
#1
Run Zhai, Fang Tang, Jianhua Gong, Jing Zhang, Biao Lei, Bo Li, Yangchao Wei, Xingsi Liang, Bo Tang, Songqing He
Recent studies have shown that deubiquitination plays a key role in tumor progression, metastasis, resistance to chemotherapy drugs, and prognosis. In this study, we investigated the effects of the deubiquitinating enzyme USP22 on the expression of the drug-resistance genes BMI1 and EZH2 in hepatocellular carcinoma (HCC) and on prognosis. Downregulation of USP22 expression with interference ribonucleic acid in resistant HCC cell lines with high USP22 expression resulted in decreased BMI1 expression, but had no effect on EZH2 expression...
2016: OncoTargets and Therapy
https://www.readbyqxmd.com/read/27920520/ligand-based-targeted-therapy-a-novel-strategy-for-hepatocellular-carcinoma
#2
REVIEW
Min Li, Weiyue Zhang, Birong Wang, Yang Gao, Zifang Song, Qi Chang Zheng
Hepatocellular carcinoma (HCC) is the most common primary liver cancer with high morbidity and mortality worldwide. Chemotherapy is recommended to patients with intermediate or advanced stage cancer. However, the conventional chemotherapy yields low desired response rates due to multidrug resistance, fast clearance rate, nonspecific delivery, severe side effects, low drug concentration in cancer cells, and so on. Nanoparticle-mediated targeted drug delivery system can surmount the aforementioned obstacles through enhanced permeability and retention effect and active targeting as a novel approach of therapeutics for HCC in recent years...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27919980/intraperitoneal-chemotherapy-in-patients-pretreated-for-ovarian-cancer-matched-with-patients-treated-with-parenteral-chemotherapy
#3
Maria Ornella Nicoletto, Alessandra Casarin, Alessandra Baldoni, Eliana Rulli, Giulia Tasca, Zora Baretta, Grazia Artioli, Giuseppe Lombardi, Alessandro Cappetta, Irene Floriani, Giovanni Randon, Sara Valpione, Piero Litta, Pierfranco Conte, Simone Mocellin, Camillo Aliberti
BACKGROUND: Our aim was to analyze the impact of intraperitoneal chemotherapy (IPC), administered with direct peritoneal puncture, on the survival of patients with pretreated ovarian cancer in a real-life setting. PATIENTS AND METHODS: This was a retrospective study comparing patients with advanced ovarian cancer treated with IPC (N=33) and patients treated with standard intravenous (i.v.) chemotherapy matching cases for known prognostic factors (age, platinum sensitivity, histological subgroup and grade)...
December 2016: Anticancer Research
https://www.readbyqxmd.com/read/27919747/h19-mediates-methotrexate-resistance-in-colorectal-cancer-through-activating-wnt-%C3%AE-catenin-pathway
#4
Ke-Feng Wu, Wei-Cheng Liang, Lu Feng, Jian-Xin Pang, Mary Miu-Yee Waye, Jin-Fang Zhang, Wei-Ming Fu
Colorectal cancer (CRC) is a common malignancy, most of which remain unresponsive to chemotherapy. As one of the earliest cytotoxic drugs, methotrexate (MTX) serves as an anti-metabolite and anti-folate chemotherapy for various cancers. Unfortunately, MTX resistance prevents its clinical application in cancer therapy. Thereby, overcoming the drug resistance is an alternative strategy to maximize the therapeutic efficacy of MTX in clinics. Long noncoding RNAs (lncRNAs) have gained widespread attention in recent years...
December 2, 2016: Experimental Cell Research
https://www.readbyqxmd.com/read/27919680/aldh1a1-induces-resistance-to-chop-in-diffuse-large-b-cell-lymphoma-through-activation-of-the-jak2-stat3-pathway
#5
Jinqiong Jiang, Yiping Liu, Youhong Tang, Li Li, Ruolan Zeng, Shan Zeng, Meizuo Zhong
Although the majority of patients with diffuse large B-cell lymphoma (DLBCL) can be cured with CHOP (cyclophosphamide, doxorubicin, vincristine, and prednisone), chemoresistance is a common cause of treatment failure. This study aims to investigate the significance of aldehyde dehydrogenase (ALDH) 1A1 expression and the mechanism by which ALDH1A1 is involved in chemoresistance of DLBCL cells. ALDH1A1 expression levels were upregulated in patients with stable or progressive disease after CHOP treatment and positively correlated with expression of STAT3 and p-STAT3...
December 2, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27919596/chimeric-anterolateral-thigh-free-flap-for-reconstruction-of-complex-cranio-orbito-facial-defects-after-skull-base-cancers-resection
#6
Mario Cherubino, Mario Turri-Zanoni, Paolo Battaglia, Marco Giudice, Igor Pellegatta, Federico Tamborini, Francesca Maggiulli, Luca Guzzetti, Danilo Di Giovanna, Maurizio Bignami, Carolina Calati, Paolo Castelnuovo, Luigi Valdatta
Complex cranio-orbito-facial defects after skull base cancers resection entail a functional and esthetic reconstruction. The introduction of endoscopic assisted techniques for excision surgery with the advances in reconstructive surgery and anesthesiology allowed to improve the management of such critical patients. We report a series of chimeric anterolateral thigh (ALT) flaps used to reconstruct complex cranio-orbital-facial defects after skull base surgery. A retrospective review of patients that underwent cranio-orbito-facial reconstruction using a chimeric ALT flap from March 2013 to October 2015 at a single tertiary care referral Institute was performed...
November 2, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/27918554/asic1a-mediates-the-drug-resistance-of-human-hepatocellular-carcinoma-via-the-ca-2-pi3-kinase-akt-signaling-pathway
#7
Yihao Zhang, Ting Zhang, Chao Wu, Quan Xia, Dujuan Xu
Chemotherapy is the main treatment method of patients with advanced liver cancer. However, drug resistance is a serious problem in the treatment of hepatocellular carcinoma (HCC). Acid sensing ion channel 1a (ASIC1a) is a H(+)-gated cation channel; it mediates tumor cell migration and invasion, which suggests that it is involved in the development of malignant tumors. Therefore, we studied the relationship between ASIC1a and drug resistance in human hepatocellular carcinoma. In our study, we found that ASIC1a is highly expressed in human HCC tissue, and that its levels were significantly increased in resistant HCC cells Bel7402/FU and HepG2/ADM...
December 5, 2016: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/27918136/development-of-cell-permeable-non-helical-constrained-peptides-to-target-a-key-protein-protein-interaction-in-ovarian-cancer
#8
Mareike M Wiedmann, Yaw Sing Tan, Yuteng Wu, Shintaro Aibara, Wenshu Xu, Hannah F Sore, Chandra S Verma, Laura Itzhaki, Murray Stewart, James D Brenton, David R Spring
There is a lack of current treatment options for ovarian clear cell carcinoma (CCC) and the cancer is often resistant to platinum-based chemotherapy. Hence there is an urgent need for novel therapeutics. The transcription factor hepatocyte nuclear factor 1β (HNF1β) is ubiquitously overexpressed in CCC and is seen as an attractive therapeutic target. This was validated through shRNA-mediated knockdown of the target protein, HNF1β, in five high- and low-HNF1β-expressing CCC lines. To inhibit the protein function, cell-permeable, non-helical constrained proteomimetics to target the HNF1β-importin α protein-protein interaction were designed, guided by X-ray crystallographic data and molecular dynamics simulations...
December 5, 2016: Angewandte Chemie
https://www.readbyqxmd.com/read/27917797/investigation-of-macc1-gene-expression-in-head-and-neck-cancer-and-cancer-stem-cells
#9
Ebu Evran, Hilal Şahin, Kübra Akbaş, Sadik Çiğdem, Esra Gündüz
PURPOSE: By investigating the MACC1 gene (metastasis-associated in colon cancer 1) in cancer stem cells (CSC) resistant to chemotherapy and in cancer stem cells (CSC) resistant to chemotherapy and in cancer cells (CS) sensitive to chemotherapy we determineda steady expression in both types of cells in head and neck cancer. In conformity with the result we examined if this gene could be a competitor gene for chemotherapy. According to literature, the MACC1 gene shows a clear expression in head and neck cancer cells [1]...
December 1, 2016: Clinical and Investigative Medicine. Médecine Clinique et Experimentale
https://www.readbyqxmd.com/read/27917791/investigation-of-the-expression-of-rif1-gene-on-head-and-neck-pancreatic-and-brain-cancer-and-cancer-stem-cells
#10
Hacer E GursesCila, Muradiye Acar, Furkan B Barut, Mehmet Gunduz, Reidar Grenman, Esra Gunduz
PURPOSE: Recent studies have shown that cancer stem cells are resistant to chemotherapy. The aim of this study was to compare RIF1 gene expression in head and neck, pancreatic cancer and glioma cell lines and the cancer stem cells isolated from these cell lines. METHODS: UT-SCC-74 from Turku University and UT-SCC-74B primary tumor metastasis and neck cancer cell lines, YKG-1 glioma cancer cell line from RIKEN, pancreatic cancer cell lines and ASPC-1 cells from ATCC were grown in cell culture...
December 1, 2016: Clinical and Investigative Medicine. Médecine Clinique et Experimentale
https://www.readbyqxmd.com/read/27917682/the-preclinical-discovery-and-development-of-bortezomib-for-the-treatment-of-mantle-cell-lymphoma
#11
Richard Arkwright, Tri Minh Pham, Jeffrey A Zonder, Q Ping Dou
Introduction- Mantle cell lymphoma (MCL) is an incurable, often aggressive B-cell malignancy. Bortezomib (BTZ), the 20S proteasome inhibitor was originally developed and approved for treatment of relapsed refractory multiple myeloma, and subsequently approved for treatment of MCL. BTZ's single-agent activity induces clinical responses in approximately one-third of relapsed MCL patients. BTZ-containing combination therapies have further improved the quality and duration of clinical responses compared to standard chemotherapies in previously untreated MCL patients...
December 3, 2016: Expert Opinion on Drug Discovery
https://www.readbyqxmd.com/read/27917404/the-emerging-role-of-cdk5-in-cancer
#12
Karine Pozo, James A Bibb
Cdk5 is an atypical cyclin-dependent kinase that is well characterized for its role in the central nervous system rather than in the cell cycle. However Cdk5 has been recently implicated in the development and progression of a variety of cancers including breast, lung, colon, pancreatic, melanoma, thyroid and brain tumors. This broad pro-tumorigenic role makes Cdk5 a promising drug target for the development of new cancer therapies. Here we review the contribution of Cdk5 to molecular mechanisms that confer upon tumors the ability to grow, proliferate and disseminate to secondary organs, as well as resistance to chemotherapies...
October 2016: Trends in Cancer
https://www.readbyqxmd.com/read/27917296/stat1-associated-intratumoural-th1-immunity-predicts-chemotherapy-resistance-in-high-grade-serous-ovarian-cancer
#13
Katrina K Au, Cécile Le Page, Runhan Ren, Liliane Meunier, Isabelle Clément, Kathrin Tyrishkin, Nichole Peterson, Jennifer Kendall-Dupont, Timothy Childs, Julie-Ann Francis, Charles H Graham, Andrew W Craig, Jeremy A Squire, Anne-Marie Mes-Masson, Madhuri Koti
High-grade serous ovarian carcinoma (HGSC) accounts for 70% of all epithelial ovarian cancers but clinical management is challenged by a lack of accurate prognostic and predictive biomarkers of chemotherapy response. This study evaluated the role of Signal Transducer and Activator of Transcription 1 (STAT1) as an independent prognostic and predictive biomarker and its correlation with intratumoural CD8(+) T cells in a second independent biomarker validation study. Tumour STAT1 expression and intratumoural CD8(+) T cell infiltration were assessed by immunohistochemistry as a multicentre validation study conducted on 734 chemotherapy-naïve HGSCs...
October 2016: Journal of Pathology. Clinical Research
https://www.readbyqxmd.com/read/27916908/epidermal-growth-factor-receptor-status-in-circulating-tumor-cells-as-a-predictive-biomarker-of-sensitivity-in-castration-resistant-prostate-cancer-patients-treated-with-docetaxel-chemotherapy
#14
Takatsugu Okegawa, Naoshi Itaya, Hidehiko Hara, Mitsuhiro Tambo, Kikuo Nutahara
OBJECTIVE: We examined whether epidermal growth factor receptor (EGFR) expression in circulating tumor cells (CTCs) can be used to predict survival in a population of bone-metastatic castration-resistant prostate cancer (mCRPC) patients treated with docetaxel chemotherapy. METHODS: All patients with mCRPC who had experienced treatment failure with androgen-deprivation therapy and had received docetaxel chemotherapy were eligible. CTCs and EGFR expression in CTCs were enumerated with the CellSearch System in whole blood...
November 30, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27916824/graphene-oxide-nanoribbons-induce-autophagic-vacuoles-in-neuroblastoma-cell-lines
#15
Emanuela Mari, Stefania Mardente, Emanuela Morgante, Marco Tafani, Emanuela Lococo, Flavia Fico, Federica Valentini, Alessandra Zicari
Since graphene nanoparticles are attracting increasing interest in relation to medical applications, it is important to understand their potential effects on humans. In the present study, we prepared graphene oxide (GO) nanoribbons by oxidative unzipping of single-wall carbon nanotubes (SWCNTs) and analyzed their toxicity in two human neuroblastoma cell lines. Neuroblastoma is the most common solid neoplasia in children. The hallmark of these tumors is the high number of different clinical variables, ranging from highly metastatic, rapid progression and resistance to therapy to spontaneous regression or change into benign ganglioneuromas...
November 29, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27916800/lead-discovery-strategies-for-identification-of-chlamydia-pneumoniae-inhibitors
#16
REVIEW
Leena Hanski, Pia Vuorela
Throughout its known history, the gram-negative bacterium Chlamydia pneumoniae has remained a challenging target for antibacterial chemotherapy and drug discovery. Owing to its well-known propensity for persistence and recent reports on antimicrobial resistence within closely related species, new approaches for targeting this ubiquitous human pathogen are urgently needed. In this review, we describe the strategies that have been successfully applied for the identification of nonconventional antichlamydial agents, including target-based and ligand-based virtual screening, ethnopharmacological approach and pharmacophore-based design of antimicrobial peptide-mimicking compounds...
November 28, 2016: Microorganisms
https://www.readbyqxmd.com/read/27916607/current-status-of-biomarker-and-targeted-nanoparticle-development-the-precision-oncology-approach-for-pancreatic-cancer-therapy
#17
Lei Zhu, Charles Staley, David Kooby, Bassel El-Rays, Hui Mao, Lily Yang
Pancreatic cancer remains one of the major causes of cancer-related mortality. The majority of pancreatic cancer patients are diagnosed at the advanced stage with unresectable and drug resistant tumors. The new treatments with the combination of chemotherapy, molecular targeted therapy, and immunotherapy have shown modest effects on therapeutic efficacy and survival of the patients. Therefore, there is an urgent need to develop effective therapeutic approaches targeting highly heterogeneous pancreatic cancer cells and tumor microenvironments...
December 1, 2016: Cancer Letters
https://www.readbyqxmd.com/read/27915973/engaging-cell-death-pathways-for-the-treatment-of-rhabdomyosarcoma
#18
Christine C Dobson, Stephanie Langlois, David Grynspan, Kyle N Cowan, Martin Holcik
Rhabdomyosarcoma (RMS), a malignant neoplasm of presumed mesenchymal origin, is the most common soft tissue cancer of childhood. Despite aggressive treatment, resistance to current therapies remains a challenge. The success of most cytotoxic chemotherapies requires intact programmed cell death (apoptosis) pathways. Defects in the cellular apoptotic program play a key role in the pathogenesis of RMS and contribute to chemotherapeutic resistance to current treatments. Targeting and engaging apoptotic pathways using small-molecule IAP antagonists, death-inducing ligands, reestablishing pannexin channel expression and activity, immunotherapies, or a combination of these approaches is expected to improve outcomes in RMS patients...
2016: Critical Reviews in Oncogenesis
https://www.readbyqxmd.com/read/27915972/resistance-to-cell-death-and-its-modulation-in-cancer-stem-cells
#19
Ahmad R Safa
Accumulating evidence has demonstrated that human cancers arise from various tissues of origin that initiate from cancer stem cells (CSCs) or cancer-initiating cells. The extrinsic and intrinsic apoptotic pathways are dysregulated in CSCs, and these cells play crucial roles in tumor initiation, progression, cell death resistance, chemo- and radiotherapy resistance, and tumor recurrence. Understanding CSC-specific signaling proteins and pathways is necessary to identify specific therapeutic targets that may lead to the development of more efficient therapies selectively targeting CSCs...
2016: Critical Reviews in Oncogenesis
https://www.readbyqxmd.com/read/27915475/how-precisely-can-prostate-cancer-be-managed
#20
REVIEW
Liyan Zhuang, Matthew T Johnson
Progress has been made in applying genetic information to disease management in the postgenomic era, and precision medicine is emerging in prostate cancer management. The prostate health index, the 4-kallikrein (4K) score, and the PCA3, TMPRSS2- ERG, and Prostarix tests have potential for refining prostate cancer screening in conjunction with traditional prostate-specific antigen testing. The Confirm MDx and PCA3 tests have shown promise in identifying men who need be rebiopsied after a primary negative biopsy...
November 2016: International Neurourology Journal
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