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https://www.readbyqxmd.com/read/28646810/synergistic-anti-breast-cancer-effects-of-combined-treatment-with-oleuropein-and-doxorubicin-in-vivo
#1
Maha H Elamin, Abdelsalam B Elmahi, Maha H Daghestani, Ebtesam M Al-Olayan, Reem A Al-Ajmi, Afrah F Alkhuriji, Sherifa S Hamed, Manal F Elkhadragy
Context • Breast cancer is a leading cause of cancer fatalities among women worldwide. Of the more than 80% of patients who receive adjuvant chemotherapy, approximately 40% relapse. The majority of these patients die of disseminated metastatic disease, which emphasizes the need for new therapeutic strategies Objective • The study intended to investigate the anticancer effects of oleuropein (OL) and doxorubicin (DOX) individually and in combination on breast tumor xenografts and also to evaluate the molecular pathways involved...
June 23, 2017: Alternative Therapies in Health and Medicine
https://www.readbyqxmd.com/read/28646512/wmj-8-b-a-novel-hydroxamate-derivative-induces-mda-mb-231-breast-cancer-cell-death-via-shp-1-stat3-survivin-cascade
#2
Yu-Fan Chuang, Shiu-Wen Huang, Ya-Fen Hsu, Meng-Chieh Yu, George Ou, Wei-Jan Huang, Ming-Jen Hsu
BACKGROUND AND PURPOSE: Histone deacetylase (HDAC) inhibitors with broad-spectrum anti-tumor properties has been described and attracted lots of attention in the field of drug discovery. However, the underlying anti-tumor mechanisms of HDAC inhibitors remain incompletely understood. In this study, we aimed to characterize the underlying mechanisms of a novel hydroxamate-based HDAC inhibitor, WMJ-8-B, in inducing MDA-MB-231 breast cancer cell death. EXPERIMENTAL APPROACH: WMJ-8-B's effects on cell viability, cell cycle distribution, apoptosis, as well as signaling molecules modification and activation were analyzed by MTT assay, flowcytometric analysis, immunoblotting, reporter assay, ChIP analysis and siRNA strategy...
June 23, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28646172/dacomitinib-a-pan-inhibitor-of-erbb-receptors-suppresses-growth-and-invasive-capacity-of-chemoresistant-ovarian-carcinoma-cells
#3
Majid Momeny, Ghazaleh Zarrinrad, Farima Moghaddaskho, Arash Poursheikhani, Ghazaleh Sankanian, Azam Zaghal, Shahab Mirshahvaladi, Fatemeh Esmaeili, Haniyeh Eyvani, Farinaz Barghi, Zahra Sabourinejad, Zivar Alishahi, Hassan Yousefi, Reza Ghasemi, Leila Dardaei, Davood Bashash, Bahram Chahardouli, Ahmad R Dehpour, Javad Tavakkoly-Bazzaz, Kamran Alimoghaddam, Ardeshir Ghavamzadeh, Seyed H Ghaffari
Epithelial ovarian cancer (EOC) is the most lethal gynaecological malignancy worldwide. Development of chemoresistance and peritoneal dissemination of EOC cells are the major reasons for low survival rate. Targeting signal transduction pathways which promote therapy resistance and metastatic dissemination is the key to successful treatment. Members of the ErbB family of receptors are over-expressed in EOC and play key roles in chemoresistance and invasiveness. Despite this, single-targeted ErbB inhibitors have demonstrated limited activity in chemoresistant EOC...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28643442/the-effect-of-collagen-coating-on-titanium-with-nanotopography-on-in-vitro-osteogenesis
#4
Daniel G Costa, Emanuela P Ferraz, Rodrigo P F Abuna, Paulo T de Oliveira, Marco Morra, Marcio M Beloti, Adalberto L Rosa
Several studies have shown the positive effects of Ti either with nanotopography or coated with collagen on osteoblast differentiation. Thus, we hypothesized that the association of nanotopography with collagen may increase the in vitro osteogenesis on Ti surface. Ti discs with nanotopography with or without collagen coating were characterized by scanning electron microscopy and atomic force microscopy. Rat calvaria-derived osteoblastic cells were cultured on both Ti surfaces for up to 14 days and the following parameters were evaluated: cell proliferation, alkaline phosphatase (ALP) activity, extracellular matrix mineralization, protein expression of bone sialoprotein (BSP) and osteopontin (OPN), and gene expression of collagen type 1a (Coll1a), runt related transcription factor 2 (Runx2), osterix (OSX), osteocalcin (OC), Ki67, Survivin and Bcl2 associated X protein (BAX)...
June 23, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28642204/co-delivery-of-paclitaxel-and-anti-survivin-sirna-via-redox-sensitive-oligopeptide-liposomes-for-the-synergistic-treatment-of-breast-cancer-and-metastasis
#5
Xinyan Chen, Yidi Zhang, Chunming Tang, Chunli Tian, Qiong Sun, Zhigui Su, Lingjing Xue, YifanYin, Caoyun Ju, Can Zhang
The overexpression of survivin in breast cancer cells is an important factor of paclitaxel (PTX) resistance in breast cancer. To overcome PTX resistance and improve the antitumor effect of PTX, we developed a novel liposome-based nanosystem (PTX/siRNA/SS-L), composed of a redox-sensitive cationic oligopeptide lipid (LHSSG2C14) with a proton sponge effect, natural soybean phosphatidylcholine (SPC), and cholesterol for co-delivery of PTX and anti-survivin siRNA, which could specifically downregulate survivin overexpression...
June 19, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28639913/novel-roles-of-folic-acid-as-redox-regulator-modulation-of-reactive-oxygen-species-sinker-protein-expression-and-maintenance-of-mitochondrial-redox-homeostasis-on-hepatocellular-carcinoma
#6
Kun-Goung Lai, Chi-Fen Chen, Chun-Te Ho, Jun-Jen Liu, Tsan-Zon Liu, Chi-Liang Chern
We provide herein several lines of evidence to substantiate that folic acid (or folate) is a micronutrient capable of functioning as a novel redox regulator on hepatocellular carcinoma. First, we uncovered that folate deficiency could profoundly downregulate two prominent anti-apoptotic effectors including survivin and glucose-regulated protein-78. Silencing of either survivin or glucose-regulated protein-78 via small interfering RNA interfering technique established that both effectors could serve as reactive oxygen species sinker proteins...
June 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28639112/kuguacin-j-isolated-from-bitter-melon-leaves-modulates-paclitaxel-sensitivity-in-drug-resistant-human-ovarian-cancer-cells
#7
Pornsiri Pitchakarn, Sonthaya Umsumarng, Sariya Mapoung, Pisamai Ting, Piya Temviriyanukul, Wanisa Punfa, Wilart Pompimon, Pornngarm Limtrakul
We previously reported the multidrug resistance-reversing ability of kuguacin J (KJ) in cervical cancer cells via the inhibition of P-glycoprotein (P-gp) function. This study investigated whether KJ could promote cisplatin- and paclitaxel (PTX)-induced cancer cell death in drug-resistance human ovarian cancer cells (SKOV3). Cytotoxicity testing showed that SKOV3 was more resistant to cisplatin and PTX compared to drug-sensitive human ovarian cancer cells (A2780). The cytotoxicity of PTX was significantly increased in SKOV3 cells when co-treated with KJ...
June 21, 2017: Journal of Natural Medicines
https://www.readbyqxmd.com/read/28638457/upregulation-of-coxsackie-adenovirus-receptor-sensitizes-cisplatin-resistant-lung-cancer-cells-to-crad-induced-inhibition
#8
Ali Sakhawat, Yanan Liu, Ling Ma, Tahir Muhammad, Shensen Wang, Lina Zhang, Xianling Cong, Yinghui Huang
Objective. Conditionally replicating adenoviruses (CRAds) have been proven potent oncolytic viruses in previous studies. They selectively replicate in the tumor cells because of incorporated survivin promoter and ultimately lead to their killing with minimal side effects on normal tissue. Chemotherapy with cisplatin is commonly employed for treating tumors, but its cytotoxic effects and development of resistance remained major concerns to be dealt with. The aim of this study was to explore the anticancer potential of survivin regulated CRAd alone or in combination with cisplatin in the A549 lung cancer cell line and cisplatin-resistant lung cancer cell line, A549-DDPR...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28630399/dietary-mastic-oil-extracted-from-pistacia-lentiscus-var-chia-suppresses-tumor-growth-in-experimental-colon-cancer-models
#9
Katerina Spyridopoulou, Angeliki Tiptiri-Kourpeti, Evangeli Lampri, Eleni Fitsiou, Stavros Vasileiadis, Manolis Vamvakias, Haido Bardouki, Anna Goussia, Vasiliki Malamou-Mitsi, Mihalis I Panayiotidis, Alex Galanis, Aglaia Pappa, Katerina Chlichlia
Plant-derived bioactive compounds attract considerable interest as potential chemopreventive anticancer agents. We analyzed the volatile dietary phytochemicals (terpenes) present in mastic oil extracted from the resin of Pistacia lentiscus var. chia and comparatively investigated their effects on colon carcinoma proliferation, a) in vitro against colon cancer cell lines and b) in vivo on tumor growth in mice following oral administration. Mastic oil inhibited - more effectively than its major constituents- proliferation of colon cancer cells in vitro, attenuated migration and downregulated transcriptional expression of survivin (BIRC5a)...
June 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28629825/ict1-predicts-a-poor-survival-and-correlated-with-cell-proliferation-in-diffuse-large-b-cell-lymphoma
#10
Wenjun Xie, Meijuan Wu, Tianhong Fu, Xiaohong Li, Zhaoming Wang, Yongxian Hu, Liyan Zhu, Gu Zhang
Immature colon carcinoma transcript-1 (ICT1) is a crucial member of the large mitoribosomal subunit in mitochondrial ribosome, which has been shown to be closely related to tumorigenesis. Its expression and function in human diffuse large B-cell lymphoma (DLBCL), however, remained elusive. In this study, analysis of public available Oncomine database suggested that the expression levels of ICT1 mRNA was significantly upregulated in DLBCL tissues. Consistently, we described ICT1 was remarkably upregulated in fresh DLBCL samples compared with the corresponding normal tissues using quantitative reverse-transcription polymerase chain reaction (qRT-PCR) and Western blotting...
June 16, 2017: Gene
https://www.readbyqxmd.com/read/28627702/lentivirus%C3%A2-mediated-knockdown-of-chondroitin-polymerizing-factor-inhibits-glioma-cell-growth-in%C3%A2-vitro
#11
Yang-Hua Fan, Bing Xiao, Shi-Gang Lv, Min-Hua Ye, Xin-Gen Zhu, Miao-Jing Wu
Glioma is the most common primary tumor in the central nervous system, characterized by rapid progression, aggressive behavior, frequent recurrence and poor prognosis. In the present study we demonstrated that chondroitin polymerizing factor (CHPF) is highly expressed in human glioma tissues and 4 glioma cell lines. To explore the role of CHPF in glioma, a lentiviral vector expressing CHPF shRNA was constructed and transfected into the glioma U251 cells, which stably downregulated the expression levels of the CHPF gene in U251 cells in vitro...
June 19, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28624529/cyclopamine-sensitizes-trail-resistant-gastric-cancer-cells-to-trail-induced-apoptosis-via-endoplasmic-reticulum-stress-mediated-increase-of-death-receptor-5-and-survivin-degradation
#12
Yoo Jin Na, Dae-Hee Lee, Jung Lim Kim, Bo Ram Kim, Seong Hye Park, Min Jee Jo, Soyeon Jeong, Hong Jun Kim, Suk-Young Lee, Yoon A Jeong, Sang Cheul Oh
Tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL) is one of the most effective cancer treatments owing to its ability to selectively kill cancer cells, without affecting normal cells. However, it has been reported that several gastric cancer cells show resistance to TRAIL because of a scarcity of death receptor 5 (DR5) expressed on the cell surface. In this study, we show that cyclopamine sensitizes gastric cancer cells to TRAIL-induced apoptosis by elevating the expression of DR5. Interestingly, survivin hampers the existence of DR5 protein under normal conditions and cyclopamine decreases the expression of survivin, thus acting as a TRAIL sensitizer...
June 15, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/28623129/increased-expression-of-microrna-31-5p-inhibits-cell-proliferation-migration-and-invasion-via-regulating-sp1-transcription-factor-in-hepg2-hepatocellular-carcinoma-cell-line
#13
Guoliang Zhao, Chuangye Han, Zhi Zhang, Lei Wang, Jing Xu
Accumulating evidence has suggested that microRNA-31-5p (miR-31-5p) is dysfunctional in hepatocellular carcinoma (HCC). However, the molecular mechanism of HCC remains unclear. In this study, we investigated the role of miR-31-5p in tumor formation and development of HCC. The expression of miR-31-5p was detected in HCC tissues, corresponding adjacent tissues, normal liver tissues, and HCC cell lines. miR-31-5p mimics and an inhibitor were transfected into HepG2 cells to assess the effects of miR-31-5p on cell proliferation, apoptosis, cell cycle, migration, and invasion assays...
June 13, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28620146/mitochondrial-asncmtrna-1-and-asncmtrna-2-as-potent-targets-to-inhibit-tumor-growth-and-metastasis-in-the-renca-murine-renal-adenocarcinoma-model
#14
Vincenzo Borgna, Jaime Villegas, Verónica A Burzio, Sebastián Belmar, Mariela Araya, Emanuel Jeldes, Lorena Lobos-González, Verónica Silva, Claudio Villota, Luciana Oliveira-Cruz, Constanza Lopez, Teresa Socias, Octavio Castillo, Luis O Burzio
Knockdown of antisense noncoding mitochondrial RNAs (ASncmtRNAs) induces apoptosis in several human and mouse tumor cell lines, but not normal cells, suggesting this approach for a selective therapy against different types of cancer. Here we show that in vitro knockdown of murine ASncmtRNAs induces apoptotic death of mouse renal adenocarcinoma RenCa cells, but not normal murine kidney epithelial cells. In a syngeneic subcutaneous RenCa model, treatment delayed and even reversed tumor growth. Since the subcutaneous model does not reflect the natural microenviroment of renal cancer, we used an orthotopic model of RenCa cells inoculated under the renal capsule...
June 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/28618939/rapamycin-enhances-the-anti-angiogenesis-and-anti-proliferation-ability-of-ym155-in-oral-squamous-cell-carcinoma
#15
Kong-Liang Li, Yu-Fan Wang, Jia-Ruo Qin, Feng Wang, Yong-Tao Yang, Li-Wu Zheng, Ming-Hua Li, Jie Kong, Wei Zhang, Hong-Yu Yang
YM155, a small molecule inhibitor of survivin, has been studied in many tumors. It has been shown that YM155 inhibited oral squamous cell carcinoma through promoting apoptosis and autophagy and inhibiting proliferation. It was found that YM155 also inhibited the oral squamous cell carcinoma-mediated angiogenesis through the inactivation of the mammalian target of rapamycin pathway. Rapamycin, a mammalian target of rapamycin inhibitor, played an important role in the proliferation and angiogenesis of oral squamous cell carcinoma cell lines...
June 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28615071/survivin-expression-pattern-in-the-intestine-of-normoxic-and-ischemic-rats
#16
Alexandra Scheer, Shirley K Knauer, Rabea Verhaegh
BACKGROUND: Survivin, a member of the inhibitor of apoptosis protein (IAP) family, regulates mitosis and chromosome segregation. The expression of survivin proceeds during embryonic development and in addition has already been demonstrated in cancer cells. However, there is also evidence of survivin expression in differentiated tissues, including the gastro-intestinal tract of adult rats. A study with human colon specimens exhibited survivin in most basal crypt epithelial cells of normal mucosa...
June 14, 2017: BMC Gastroenterology
https://www.readbyqxmd.com/read/28611154/cytoresistance-after-acute-kidney-injury-is-limited-to-the-recovery-period-of-proximal-tubule-integrity-and-possibly-involves-hippo-yap-signaling
#17
Takamasa Iwakura, Yoshihide Fujigaki, Tomoyuki Fujikura, Takayuki Tsuji, Naro Ohashi, Akihiko Kato, Hideo Yasuda
Rat proximal tubule (PT) cells that have recovered from severe acute kidney injury induced by uranyl acetate (UA) develop cytoresistance to subsequent UA treatments. We reported that enhanced G1 arrest might contribute to cytoresistance. Herein, we examined these mechanisms by investigating Yes-associated protein (YAP), a regulator of cell number, and survivin, a downstream mediator of YAP that inhibits apoptosis. Rats pretreated with saline (vehicle group) or UA (AKI group) were injected with UA 2 weeks, 2 months, or 6 months after treatment...
June 2017: Physiological Reports
https://www.readbyqxmd.com/read/28610775/cytotoxic-effect-of-a-novel-naphthylchalcone-against-multiple-cancer-cells-focusing-on-hematologic-malignancies
#18
Mariana Franzoni Maioral, Camila do Nascimento Bodack, Natália Marceli Stefanes, Álisson Bigolin, Alessandra Mascarello, Louise Domeneghini Chiaradia-Delatorre, Rosendo Augusto Yunes, Ricardo José Nunes, Maria Cláudia Santos-Silva
Chalcones are natural compounds described in the literature by its several properties including cytotoxic activity against several tumor types. Considering that the search for new chemotherapeutic agents is still necessary, the aim of this study was to investigate the cytotoxic mechanisms involved in cell death induced by a synthetic chalcone (A23) on different tumor cells. Chalcone A23 reduced the cell viability of twelve tumor cell lines in a concentration and time dependent manner and it was more cytotoxic against acute leukemia cells...
June 10, 2017: Biochimie
https://www.readbyqxmd.com/read/28601088/sirt1-activation-mediates-heat-induced-survival-of-uvb-damaged-keratinocytes
#19
Leslie Calapre, Elin S Gray, Sandrine Kurdykowski, Anthony David, Pascal Descargues, Mel Ziman
BACKGROUND: Exposure to heat stress after UVB irradiation induces a reduction of apoptosis, resulting in survival of DNA damaged human keratinocytes. This heat-mediated evasion of apoptosis appears to be mediated by activation of SIRT1 and inactivation of p53 signalling. In this study, we assessed the role of SIRT1 in the inactivation of p53 signalling and impairment of DNA damage response in UVB plus heat exposed keratinocytes. RESULTS: Activation of SIRT1 after multiple UVB plus heat exposures resulted in increased p53 deacetylation at K382, which is known to affect its binding to specific target genes...
June 10, 2017: BMC Dermatology
https://www.readbyqxmd.com/read/28600475/dual-inhibition-of-hdac-and-tyrosine-kinase-signaling-pathways-with-cudc-907-inhibits-thyroid-cancer-growth-and-metastases
#20
Shweta Kotian, Lisa Zhang, Myriem Boufraqech, Kelli Gaskins, Sudheer Kumar Gara, Martha M Quezado, Naris Nilubol, Electron Kebebew
PURPOSE: There is currently no standard therapy for anaplastic thyroid cancer (ATC) and poorly differentiated thyroid cancer (PDTC), which account for two-thirds of thyroid cancer deaths. Driver mutations in the PI3K/AKT and RAF/RAS/MEK/ERK pathways are common in ATC and PDTC. Histone deacetylases (HDACs) regulate cancer initiation and progression. Our aim was to determine the therapeutic efficacy of simultaneously targeting these pathways in thyroid cancer with a single agent, and to evaluate biomarkers of treatment response...
June 9, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
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