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Apoptosis in cancer cells

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https://www.readbyqxmd.com/read/28738542/protective-effects-of-tannic-acid-on-acute-doxorubicin-induced-cardiotoxicity-involvement-of-suppression-in-oxidative-stress-inflammation-and-apoptosis
#1
Jianping Zhang, Lijing Cui, Xue Han, Yuanyuan Zhang, Xuan Zhang, Xi Chu, Fenghua Zhang, Ying Zhang, Li Chu
Doxorubicin (DOX) is a highly effective drug, but its cardiotoxicity restricts its therapeutic index. Oxidative stress is the major etiopathological factor in DOX-induced cardiotoxicity. Tannic acid (TA) has various anti-cancer, antioxidant, and anti-inflammatory activities. The purpose of the study was to survey the possible effects of TA against acute DOX-induced cardiotoxicity. Male Sprague-Dawleyrats were randomly divided into five groups: control, DOX (10mg/kg) alone, DOX with TA (20 and 40mg/kg), or DOX withcaptopril (30mg/kg) treatments...
July 20, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28738539/lncrna-ab073614-regulates-proliferation-and-metastasis-of-colorectal-cancer-cells-via-the-pi3k-akt-signaling-pathway
#2
Yanan Wang, Haoyu Kuang, Jinfang Xue, Liya Liao, Fang Yin, Xiaojun Zhou
The expression profiles of long noncoding RNAs (lncRNAs) in colorectal cancer (CRC) have remained unclear. LncRNA AB073614 is known to be upregulated in ovarian cancer and glioma tissues, and is associated with the occurrence and progression of those cancers. In the present study, we investigated the lncRNA AB073614 gene expression patterns in CRC cell lines and tissue samples from CRC patients, and then analyzed them for possible associations with various clinicopathological characteristics. Furthermore, the roles played by lncRNA AB073614 in CRC cell proliferation, apoptosis, cell cycle progression, migration, and invasion were examined in vitro by using gene knockdown and overexpression techniques...
July 20, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28738532/genipin-attenuates-cisplatin-induced-nephrotoxicity-by-counteracting-oxidative-stress-inflammation-and-apoptosis
#3
Eglal Mahgoub, Shanmugam Muthu Kumaraswamy, Kamal Hassan Kader, Balaji Venkataraman, Shreesh Ojha, Ernest Adeghate, Mohanraj Rajesh
Cisplatin (CP) is a potent and widely used chemotherapeutic agent. However, the clinical benefits of CP are compromised because it elicits nephrotoxicity and ototoxicity. In this study, we investigated the nephroprotective effects of the phytochemical genipin (GP) isolated from the gardenia (Gardenia jasminoides) fruit, using a murine model of CP-induced nephropathy. GP pretreatment attenuated the CP-induced renal tissue injury by diminishing the serum blood urea nitrogen, creatinine, and cystatin C levels, as well as those of kidney injury molecule-1...
July 20, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28738425/preparation-and-characterization-of-pegylated-iron-oxide-gold-nanoparticles-for-delivery-of-sulforaphane-and-curcumin
#4
Hossein Danafar, Ali Sharafi, Sonia Askarlou, Hamidreza Kheiri Manjili
Natural products have been used for the treatment of various diseases such as cancer. Curcumin (CUR) and sulforaphane (SF) have anti-cancer effects, but their application is restricted because of their low water solubility and poor oral bioavailability. To improve the bioavailability and solubility of SF and CUR, we performed an advanced delivery of SF and CUR with PEGylated gold coated Fe3O4 magnetic nanoparticles (PEGylated Fe3O4@Au NPs) to endorse SF and CUR maintenance as an effective and promising antitumor drugs...
July 24, 2017: Drug Research
https://www.readbyqxmd.com/read/28738360/targeting-developmental-pathways-the-achilles-heel-of-cancer
#5
Wolfram C M Dempke, Klaus Fenchel, Peter Uciechowski, Timothy Chevassut
Developmental pathways (e.g., Notch, Hippo, Hedgehog, Wnt, and TGF-β/BMP/FGF) are networks of genes that act co-ordinately to establish the body plan, and disruptions of genes in one pathway can have effects in related pathways and may result in serious dysmorphogenesis or cancer. Interestingly, all developmental pathways are highly conserved cell signalling systems present in almost all multicellular organisms. In addition, they have a crucial role in cell proliferation, apoptosis, differentiation, and finally in organ development...
July 22, 2017: Oncology
https://www.readbyqxmd.com/read/28738328/a-novel-role-for-mir-520a-3p-in-regulating-egfr-expression-in-colorectal-cancer
#6
Rui Zhang, Rui Liu, Chang Liu, Yahan Niu, Jianguo Zhang, Baoliang Guo, Chen-Yu Zhang, Jing Li, Jie Yang, Xi Chen
BACKGROUND/AIMS: MicroRNAs (miRNAs) have been consistently demonstrated to be involved in colorectal cancer as either tumour oncogenes or tumour suppressors. However, the detailed role of miR-520a-3p in colorectal cancer remains poorly understood. METHODS: Quantitative RT-PCR and western blotting assays were used to measure miR-520a-3p and EGFR expression levels in colorectal cancer tissues, respectively. Luciferase reporter assay was employed to validate the direct targeting of EGFR by miR-520a-3p...
July 24, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28738012/evaluation-of-protein-kinase-ck2-as-a-therapeutic-target-for-squamous-cell-carcinoma-of-cats
#7
Claire M Cannon, Janeen H Trembley, Betsy T Kren, Gretchen M Unger, M Gerard O'Sullivan, Ingrid Cornax, Jaime F Modiano, Khalil Ahmed
OBJECTIVE To investigate protein kinase CK2 (CK2) expression in squamous cell carcinoma (SCC) of cats and to examine effects of CK2 downregulation on in vitro apoptosis and viability in SCC. SAMPLE Biopsy specimens of oral mucosa and testis and blood samples from clinically normal cats, biopsy specimens of oral SCC from cats, and feline SCC (SCCF1) and mammary gland carcinoma (K12) cell lines. PROCEDURES Immunohistochemical labeling for CK2α was performed on biopsy specimens. Sequences of the CK2α subunit gene and CK2α' subunit gene in feline blood and feline cancer cell lines were determined by use of PCR and reverse-transcription PCR assays followed by direct Sanger sequencing...
August 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28737830/role-of-triosephosphate-isomerase-and-downstream-functional-genes-on-gastric-cancer
#8
Tingting Chen, Zhigang Huang, Yunxiao Tian, Haiwei Wang, Ping Ouyang, Haoqin Chen, Lili Wu, Bode Lin, Rongwei He
Triosephosphate isomerase (TPI) is highly expressed in many types of human tumors and is involved in migration and invasion of cancer cells. However, TPI clinicopathological significance and malignant function in gastric cancer (GC) have not been well defined. The present study aimed to examine TPI expression in GC tissue and its biological functions. Furthermore, we investigated its downstream genes by gene chip technology. Our results showed that TPI expression was higher in gastric cancer tissues than adjacent tissues, although no statistical differences were found between TPI expression and clinicopathological factors...
July 24, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28737828/taz-inhibition-restores-sensitivity-of-cisplatin-via-akt-mtor-signaling-in-lung-adenocarcinoma
#9
Wei Xu, Yunyan Wei, Yue Li, Yuan Yin, Weiwei Yuan, Yan Yang, Weihong Zhao, Jianqing Wu
The cisplatin-based doublet remains the foundation of treatment for the majority of patients with advanced non-small cell lung cancer (NSCLC), however, many patients exhibit acquired drug resistance. Transcriptional co-activator with PDZ binding motif (TAZ) is an oncogene in lung cancer, important for lung tumorigenesis and metastasis. Recently, it was revealed that TAZ upregulation confers resistance against a diverse range of cytotoxic agents. The present study aimed to investigate whether TAZ is involved in cisplatin sensitivity in lung adenocarcinoma...
July 24, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28737827/cytotoxic-and-chemosensitization-effects-of-scutellarin-from-traditional-chinese-herb-scutellaria%C3%A2-altissima%C3%A2-l-in-human-prostate-cancer-cells
#10
Chen Gao, Yinglu Zhou, Zhongling Jiang, Yuan Zhao, Dongjun Zhang, Xia Cong, Rongfeng Cao, Huatao Li, Wenru Tian
Scutellaria altissima L. is a common traditional Chinese medicine used to treat inflammation in some countries. Scutellarin, an active major flavone glycoside isolated from the traditional Chinese medicine Scutellaria altissima L., has been shown to offer various beneficial biochemical effects on cerebrovascular diseases and inflammation. However, the antiproliferative effects of Scutellarin in prostate cancer and the underlying mechanism are not fully elucidated. In the present study, we aimed to ascertain whether Scutellarin inhibits cancer cell growth and to further explore the molecular mechanism...
July 24, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28737825/combination-of-rapamycin-and-garlic-derived-s-allylmercaptocysteine-induces-colon-cancer-cell-apoptosis-and-suppresses-tumor-growth-in-xenograft-nude-mice-through-autophagy-p62-nrf2-pathway
#11
Siying Li, Guang Yang, Xiaosong Zhu, Lin Cheng, Yueyue Sun, Zhongxi Zhao
The natural plant-derived product S-allylmercapto-cysteine (SAMC) has been studied in cancer therapy as a single and combination chemotherapeutic agent. The present study was employed to verify the combination use of SAMC and rapamycin that is the mTOR inhibitor with anticancer ability but has limited efficacy due to drug resistance, and to explore the underlying mechanisms. We combined rapamycin and SAMC for colorectal cancer treatment in the HCT‑116 cancer cells and a xenograft murine model. The in vivo study was established by xenografting HCT‑116 cells in BALB/c nude mice...
July 24, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28737823/overexpression-of-non%C3%A2-smc-condensin%C3%A2-i-complex-subunit%C3%A2-g-serves-as-a-promising-prognostic-marker-and-therapeutic-target-for-hepatocellular-carcinoma
#12
Wanwei Liu, Bo Liang, Hongliang Liu, Yong Huang, Xiangbao Yin, Fan Zhou, Xin Yu, Qian Feng, Enliang Li, Zhenhong Zou, Linquan Wu
The non‑SMC condensin I complex subunit G (NCAPG) that organizes the coiling topology of individual chromatids, represents an overexpressed antigen in various types of cancer, and also contributes to restructuring chromatin into rod‑shaped mitotic chromosomes and ensuring the segregation of sister chromatid during cell division. In this study, we investigated the association between NCAPG expression and the biological behavior of hepatocellular carcinoma (HCC) to further explore the potential of NCAPG as a therapeutic target...
July 24, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28737768/arid1a-mutated-ovarian-cancers-depend-on-hdac6%C3%A2-activity
#13
Benjamin G Bitler, Shuai Wu, Pyoung Hwa Park, Yang Hai, Katherine M Aird, Yemin Wang, Yali Zhai, Andrew V Kossenkov, Ana Vara-Ailor, Frank J Rauscher Iii, Weiping Zou, David W Speicher, David G Huntsman, Jose R Conejo-Garcia, Kathleen R Cho, David W Christianson, Rugang Zhang
ARID1A, encoding a subunit of the SWI/SNF chromatin-remodelling complex, is the most frequently mutated epigenetic regulator across all human cancers. ARID1A and TP53 mutations are typically mutually exclusive. Therapeutic approaches that correlate with this genetic characteristic remain to be explored. Here, we show that HDAC6 activity is essential in ARID1A-mutated ovarian cancers. Inhibition of HDAC6 activity using a clinically applicable small-molecule inhibitor significantly improved the survival of mice bearing ARID1A-mutated tumours...
July 24, 2017: Nature Cell Biology
https://www.readbyqxmd.com/read/28737386/telomerase-inhibition-and-human-telomeric-g-quadruplex-dna-stabilization-by-a-%C3%AE-carboline-benzimidazole-derivative-at-low-concentration
#14
Kranthikumar Yadav, Penchala Narasimha Rao Meka, Sudeshna Sadhu, Sravanthi Devi Guggilapu, Jeshma Kovvuri, Ahmed Kamal, Ragampeta Srinivas, Panuganti Devayani, Bathini Nagendra Babu, Narayana Nagesh
Guanine rich regions in DNA, which can form highly stable secondary structures, namely, G-quadruplex or G4 DNA structures, affects DNA replication and transcription. Molecules that stabilize G4 DNA have attained importance in recent years. In the present study, G4 DNA stabilization, inhibition of telomerase and anticancer activity of synthetic β-carboline-benzimidazoles (5a, 5d, 5h and 5r), were studied. Among them, derivatives containing a 4-methoxyphenyl ring at C1 and 6-methoxy substituted benzimidazole at C3 (5a) was found to stabilize telomeric G-quadruplex DNA efficiently...
July 24, 2017: Biochemistry
https://www.readbyqxmd.com/read/28737263/lidocaine-inhibits-the-proliferation-of-lung-cancer-by-regulating-the-expression-of-golt1a
#15
Lei Zhang, Rong Hu, Yanyong Cheng, Xiaoyang Wu, Siwei Xi, Yu Sun, Hong Jiang
OBJECTIVES: Lidocaine is the most commonly used local anaesthetic in clinical and can inhibit proliferation, suppress invasion and migration and induce apoptosis in human lung adenocarcinoma (LAD) cells. However, its specific downstream molecular mechanism is unclear. MATERIALS AND METHODS: LAD cell lines, A549 and H1299 cells, were treated with lidocaine. The proliferation was evaluated by the methylthiazolyldiphenyl-tetrazolium bromide (MTT) and bromodeoxyuridine (BrdU) assay...
July 24, 2017: Cell Proliferation
https://www.readbyqxmd.com/read/28736522/gliotoxin-targets-nuclear-notch2-in-human-solid-tumor-derived-cell-lines-in-vitro-and-inhibits-melanoma-growth-in-xenograft-mouse-model
#16
Rainer Hubmann, Wolfgang Sieghart, Susanne Schnabl, Mohammad Araghi, Martin Hilgarth, Marlies Reiter, Dita Demirtas, Peter Valent, Christoph Zielinski, Ulrich Jäger, Medhat Shehata
Deregulation of NOTCH2 signaling is implicated in a wide variety of human neoplasias. The current concept of targeting NOTCH is based on using gamma secretase inhibitors (GSI) to regulate the release of the active NOTCH intracellular domain. However, the clinical outcome of GSI remains unsatisfactory. Therefore we analyzed human solid tumor derived cell lines for their nuclear NOTCH activity and evaluated the therapeutic potential of the NOTCH2 transactivation inhibitor gliotoxin in comparison to the representative GSI DAPT...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28736298/calcitriol-mediated-reduction-in-ifn-%C3%AE-output-in-t-cell-large-granular-lymphocytic-leukemia-requires-vitamin-d-receptor-upregulation
#17
M Paige Kulling, C Kristine Olson, L Thomas Olson, E Cait Hamele, N Kathryn Carter, J David Feith, P Thomas Loughran
Constitutively activated STAT1 and elevated IFN-γ are both characteristic of T cell large granular lymphocytic leukemia (T-LGLL), a rare incurable leukemia with clonal expansion of cytotoxic T cells due to defective apoptosis. Interferon gamma (IFN-γ) is an inflammatory cytokine that correlates with worse progression and symptomology in multiple autoimmune diseases and cancers. In canonical IFN-γ-STAT1 signaling, IFN-γ activates STAT1, a transcription factor, via phosphorylation of tyrosine residue 701 (p-STAT1)...
July 20, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28735042/improved-selectivity-and-cytotoxic-effects-of-irinotecan-via-liposomal-delivery-a-comparative-study-on-hs68-and-hela-cells
#18
Ana Casadó, Margarita Mora, M Lluïsa Sagristá, Santi Rello-Varona, Pilar Acedo, Juan Carlos Stockert, Magdalena Cañete, Angeles Villanueva
Irinotecan (CPT-11) is an effective chemotherapeutic agent widely used to treat different cancers. Otherwise, the liposomal delivery of anti-tumor agents has been shown to be a promising strategy. The aim of this study has been to analyze the effect of liposomal CPT-11 (CPT-11lip) on two human cell lines (Hs68 and HeLa) to establish the suitability of this CPT-11 nanocarrier. We have demonstrated the highest uptake of CPT-11lip in comparison with that of CPT-11sol, in lactate buffer, and that CPT-11lip was internalized in the cells through an endocytic process whereas CPT-11sol does so by passive diffusion...
July 19, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28734841/potential-involvement-of-mi-rna-574-3p-in-progression-of-prostate-cancer-a-bioinformatic-study
#19
Naeem M Ashraf, Komal Imran, David W Kastner, Khadija Ikram, Ayesha Mushtaq, Aadil Hussain, Nadia Zeeshan
Aberrant gene expression is a hallmark of prostate cancer (PCa), the second deadliest disease affecting males worldwide. Dysregulation of miRNA has been associated with the progression of PCa, and in recent studies, miRNA 574-3p was found to be upregulated in cancerous prostate tissue. In this study, we characterize the effects of up-regulated miRNA 574-3p on gene expression in the tumor microenvironment through different bioinformatic tools such as Diana-Tools, KEGG Pathway database, and the Reactome Database...
July 19, 2017: Molecular and Cellular Probes
https://www.readbyqxmd.com/read/28734226/inhibition-of-prb-pathway-differentially-modulates-apoptosis-in-esophageal-cancer-cells
#20
Rossana C Soletti, Deborah Biasoli, Nathassya A L V Rodrigues, João M A Delou, Renata Maciel, Vera L A Chagas, Rodrigo A P Martins, Stevens K Rehen, Helena L Borges
Esophageal cancer is the sixth most common cause of cancer-related death worldwide. Current chemotherapy regimens include a combination of 5-fluorouracil (5-FU) and cisplatin, but more efficient therapy strategies are needed to increase 5-year survival. Alterations in the signaling pathway of the tumor suppressor gene Rb-1, which encodes a phosphoprotein (pRB) that negatively regulates the G1/S transition of the cell cycle, are present in 70% of all tumors, but its role in esophageal cancer is still unclear...
July 19, 2017: Translational Oncology
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