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https://www.readbyqxmd.com/read/28814964/milk-disrupts-p53-and-dnmt1-the-guardians-of-the-genome-implications-for-acne-vulgaris-and-prostate-cancer
#1
Bodo C Melnik
There is accumulating evidence that milk shapes the postnatal metabolic environment of the newborn infant. Based on translational research, this perspective article provides a novel mechanistic link between milk intake and milk miRNA-regulated gene expression of the transcription factor p53 and DNA methyltransferase 1 (DNMT1), two guardians of the human genome, that control transcriptional activity, cell survival, and apoptosis. Major miRNAs of milk, especially miRNA-125b, directly target TP53 and complex p53-dependent gene regulatory networks...
2017: Nutrition & Metabolism
https://www.readbyqxmd.com/read/28808653/acyl-coa-synthetase-5-promotes-the-growth-and-invasion-of-colorectal-cancer-cells
#2
Shihua Ding, Shaohui Tang, Min Wang, Donghai Wu, Haijian Guo
BACKGROUND AND AIMS: Acyl-CoA synthetase 5 (ACS5) has been reported to be associated with the development of various cancers, but the role of it in colorectal cancer (CRC) is not well understood. The present study aimed to explore the potential role of ACS5 in the development and progression of CRC. METHODS: ACS5 expression in CRC tissues and CRC cell lines was examined, and its clinical significance was analyzed. The role of ACS5 in cell proliferation, apoptosis, and invasion was examined in vitro...
2017: Canadian Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28807689/effects-of-polysaccharides-from-abalone-viscera-haliotis-discus-hannai-ino-on-mgc-803cells-proliferation
#3
Rui-Juan Zhang, Yan Shi, Jing Zheng, Xiao-Mei Mao, Zhi-Yu Liu, Qing-Xi Chen, Qin Wang
The polysaccharides (AVP) was obtained from abalone (Haliotis discus hannai Ino) viscera, using the alkaline protease to enzymolysis, sevage method and repeated freezing and thawing method to remove protein and hydrogen peroxide method to depigment. The total sugar content was 46.27±1.5% and uronic acid, sulfate radical, hexosamine and protein contents were 17.44±0.22%, 16.98±0.15%, 0.65±0.02% and 1.64±0.13% in AVP respectively. The main monosaccharide compositions of AVP were D-galactose, D-xylose, D-mannose, D-glucose and D-glucuronic acid...
August 11, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28805713/polyaspartamide-based-nanoparticles-loaded-with-fluticasone-propionate-and-the-in-vitro-evaluation-towards-cigarette-smoke-effects
#4
Emanuela Fabiola Craparo, Maria Ferraro, Elisabetta Pace, Maria Luisa Bondì, Gaetano Giammona, Gennara Cavallaro
This paper describes the evaluation of polymeric nanoparticles (NPs) as a potential carrier for lung administration of fluticasone propionate (FP). The chosen polymeric material to produce NPs was a copolymer based on α,β-poly(N-2-hydroxyethyl)-d,l-aspartamide (PHEA) whose backbone was derivatised with different molecules, such as poly(lactic acid) (PLA) and polyethylenglycol (PEG). The chosen method to produce NPs from PHEA-PLA-PEG2000 was the method based on high-pressure homogenization and subsequent solvent evaporation by adding Pluronic F68 during the process and trehalose before lyophilisation...
August 13, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28803992/p-rex1-amplification-promotes-progression-of-cutaneous-melanoma-via-the-pak1-p38-mmp-2-pathway
#5
Jinhua Wang, Hajime Hirose, Guanhua Du, Kelly Chong, Eiji Kiyohara, Isaac P Witz, Dave S B Hoon
P-REX1 (PIP3-dependent Rac exchange factor-1) is a guanine nucleotide exchange factor that activates Rac by catalyzing exchange of GDP for GTP bound to Rac. Aberrant up-regulation of P-REX1 expression has a role in metastasis however, copy number (CN) and function of P-REX1 in cutaneous melanoma are unclear. To explore the role of P-REX1 in melanoma, SNP 6.0 and Exon 1.0 ST microarrays were assessed. There was a higher CN (2.82-fold change) of P-REX1 in melanoma cells than in melanocytes, and P-REX1 expression was significantly correlated with P-REX1 CN...
August 10, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28803837/silencing-of-glut1-induces-chemoresistance-via-modulation-of-akt-gsk-3%C3%AE-%C3%AE-catenin-survivin-signaling-pathway-in-breast-cancer-cells
#6
Sunhwa Oh, KeeSoo Nam, Hyungjoo Kim, Incheol Shin
Cancer cells require increased aerobic glycolysis to support rapid cell proliferation. For their increased energy demands, cancer cells express glucose transporter (Glut) proteins at a high level. Glut1 is associated with basal-like breast cancer and is considered a potential therapeutic target. To investigate the possibility of Glut1 as a therapeutic target in breast cancer cells, we downregulated Glut1 in triple-negative breast cancer (TNBC) cell lines using a short hairpin system. We determined whether Glut1 silencing might enhance anti-proliferative effect of chemotherapeutic agents...
August 10, 2017: Archives of Biochemistry and Biophysics
https://www.readbyqxmd.com/read/28800883/gene-expression-profiling-and-pathway-network-analysis-of-anti-tumor-activity-by-jaridon-6-in-esophageal-cancer
#7
Ling Fu, Yu-Qing Wang, Bing-Kai Han, Xiao-Rui Li, Xiao-Jing Shi, Fen Yin, Jun-Wei Wang, Pei-Rong Zhao, Yu Ke, Hong-Min Liu
Jaridon 6, a novel ent-kaurene diterpenoid derived from Rabdosia rubescens (Hemsl.) Hara, possesses strong anti-tumor activity in esophageal cancer cells. In this study, we explored the underlying molecular events of the anti-tumor activity of Jaridon 6. Cell viability and apoptosis results obtained by flow cytometry confirmed the tumor inhibitory effect of Jaridon 6 in esophageal cancer cells. A cDNA microarray was performed and the observations were validated using quantitative reverse transcription polymerase chain reaction...
August 8, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28797724/the-effect-of-newly-synthesized-progesterone-derivatives-on-apoptotic-and-angiogenic-pathway-in-mcf-7-breast-cancer-cells
#8
Shaymaa M M Yahya, Abdou O Abdelhamid, Mervat M Abd-Elhalim, Ghada H Elsayed, Emad F Eskander
Due to its high potency and selectivity, anticancer agents consisting of combined molecules have gained great interests. The current study introduces newly synthesized progesterone derivatives of promising anticancer effect. Moreover, the pro-apoptotic and anti-angiogenic effects of these compounds were studied extensively. Several thiazole, pyridine, pyrazole, thiazolopyridine and pyrazolopyridine progesterone derivatives were synthesized. The structure of the novel progesterone derivatives was elucidated and confirmed using the analytical and spectral data...
August 8, 2017: Steroids
https://www.readbyqxmd.com/read/28789700/two-different-protein-expression-profiles-of-oral-squamous-cell-carcinoma-analyzed-by-immunoprecipitation-high-performance-liquid-chromatography
#9
Soung Min Kim, Dasul Jeong, Min Keun Kim, Sang Shin Lee, Suk Keun Lee
BACKGROUND: Oral squamous cell carcinoma (OSCC) is one of the most dangerous cancers in the body, producing serious complications with individual behaviors. Many different pathogenetic factors are involved in the carcinogenesis of OSCC. Cancer cells derived from oral keratinocytes can produce different carcinogenic signaling pathways through differences in protein expression, but their protein expression profiles cannot be easily explored with ordinary detection methods. METHODS: The present study compared the protein expression profiles between two different types of OSCCs, which were analyzed through immunoprecipitation high-performance liquid chromatography (IP-HPLC)...
August 8, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28770966/inhibition-of-mir-221-influences-bladder-cancer-cell-proliferation-and-apoptosis
#10
H Liu, J-K Chang, J-Q Hou, Z-H Zhao, L-D Zhang
OBJECTIVE: Janus kinase (JAK) - signal transducer and activator of transcription (STAT) signaling pathway participate in cell proliferation and apoptosis. Suppressors of cytokine signaling 3 (SOCS3) are negative regulators of JAK-STAT3. SOCS3 was found significantly declined, while microRNA-221 (miR-221) obviously up-regulated in bladder cancer tissue. Bioinformatics analysis revealed the complementary binding site between miR-221 and 3'-UTR of SOCS3. This study investigated the role of miR-221 in regulating SOCS3/JAK-STAT3 signaling pathway and bladder cancer cell proliferation and apoptosis...
July 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28769006/mechanistic-study-of-inhibitory-effects-of-metformin-and-atorvastatin-in-combination-on-prostate-cancer-cells-in-vitro-and-in-vivo
#11
Zhen-Shi Wang, Hua-Rong Huang, Lan-Yue Zhang, Seungkee Kim, Yan He, Dong-Li Li, Chelsea Farischon, Kun Zhang, Xi Zheng, Zhi-Yun Du, Susan Goodin
Metformin is a commonly used drug for the treatment of type II diabetes and atorvastatin is the most prescribed cholesterol-lowering statin. The present study investigated the effects and mechanisms of metformin and atorvastatin in combination on human prostate cancer cells cultured in vitro and grown as xenograft tumor in vivo. Metformin in combination with atorvastatin had stronger effects on growth inhibition and apoptosis in PC-3 cells than either drug alone. The combination also potently inhibited cell migration and the formation of tumorspheres...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28756008/efficacy-of-the-cdk-inhibitor-dinaciclib-in%C3%A2-vitro-and-in%C3%A2-vivo-in-t-cell-acute-lymphoblastic-leukemia
#12
Sausan A Moharram, Kinjal Shah, Fatima Khanum, Alissa Marhäll, Mohiuddin Gazi, Julhash U Kazi
T-cell acute lymphoblastic leukemia (T-ALL) is a heterogeneous disease of the blood affecting children, adolescents and adults. Although current treatment protocols for T-ALL have improved overall survival, a portion of T-ALL patients still experiences treatment failure. Thus, the development of novel therapies is needed. In this study, we used several patient-derived T-ALL cell lines to screen for an effective drug for T-ALL. Using a panel of 378 inhibitors against different kinases, we identified the CDK inhibitor dinaciclib as a potential drug for T-ALL...
July 26, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28754437/inactivation-of-the-orphan-nuclear-receptor-nr4a1-contributes-to-apoptosis-induction-by-fangchinoline-in-pancreatic-cancer-cells
#13
Hyo-Seon Lee, Stephen Safe, Syng-Ook Lee
Previous studies have demonstrated that the orphan nuclear receptor NR4A1 is overexpressed in human pancreatic cancer and antagonizing this receptor promotes apoptosis and inhibits pancreatic cancer cells and tumor growth. In the present study, we identified fangchinoline, a bisbenzyltetrahydroisoquinoline alkaloid from Stephania tetrandra, as a new inactivator of nuclear NR4A1 and demonstrated that fangchinoline inhibits cell proliferation and induces apoptosis, in part, via the NR4A1-dependent pro-apoptotic pathways in human pancreatic cancer cells...
July 25, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28742387/vitamin-d-loaded-nanostructured-lipid-carrier-nlc-a-new-strategy-for-enhancing-efficacy-of-doxorubicin-in-breast-cancer-treatment
#14
Mehdi Sabzichi, Jamal Mohammadian, Maryam Mohammadi, Farhad Jahanfar, Ali Akbar Movassagh Pour, Hamed Hamishehkar, Alireza Ostad-Rahimi
The dangerous dose-dependent side effects of anticancer agents triggered the finding of new approaches for elevated chemotherapy efficacy. This study investigated the potential application of nanostructured lipid careers (NLCs) in increasing vitamin D3 (VitD) effectiveness in breast cancer cell (MCF-7) in concurrent administration with doxorubicin (Dox). VitD-loaded NLCs were characterized by particle size, zeta potential, Fourier transform infrared spectroscopy, and scanning electron microscope. Cytotoxicity and molecular effects of formulation were evaluated by MTT, DAPI staining, flow cytometry, and real-time quantitative PCR assays...
July 25, 2017: Nutrition and Cancer
https://www.readbyqxmd.com/read/28739697/z-360-suppresses-tumor-growth-in-mia-paca-2-bearing-mice-via-inhibition-of-gastrin-induced-anti-apoptotic-effects
#15
Yoshihiro Shiomi, Makoto Yoshimura, Kazumasa Kuki, Yuko Hori, Takao Tanaka
BACKGROUND/AIM: The aim of the study was to evaluate the anti-tumor mechanism of Z-360, a gastrin/cholecystokinin-2 receptor (CCK2R) antagonist, in MIA PaCa-2 cells and in a subcutaneous xenograft mice model. MATERIALS AND METHODS: The anti-tumor effects of Z-360 and/or gemcitabine were monitored using a MIA PaCa-2 xenograft model. The effect of Z-360 on apoptosis in the model was examined by TUNEL staining and real-time PCR analysis and the effect in MIA PaCa-2 cells stably expressing human CCK2R was also evaluated by caspase-3/7 activity...
August 2017: Anticancer Research
https://www.readbyqxmd.com/read/28729229/pharbitis-nil-pn-induces-apoptosis-and-autophagy-in-lung-cancer-cells-and-autophagy-inhibition-enhances-pn-induced-apoptosis
#16
Hyun Jin Jung, Ju-Hee Kang, Seungho Choi, Youn Kyoung Son, Kang Ro Lee, Je Kyung Seong, Sun Yeou Kim, Seung Hyun Oh
ETHNOPHARMACOLOGICAL RELEVANCE: Pharbitis Nil (PN) is used as a main component of the existing drug, DA-9701, which was developed to treat functional dyspepsia (FD) in Korea. PN extracts isolated from its seeds have been reported to have anticancer effects. AIM OF THE STUDY: The purpose of this study was to investigate the underlying mechanism of the chemotherapeutic effects of PN in lung cancer cells. MATERIALS AND METHODS: We performed MTT assays, colony formation assays, flow cytometry assays, Western blot analysis, reverse transcription-polymerase chain reaction (RT-PCR), immunofluorescence analysis, and cell counting assays to study the molecular mechanism of chemotherapeutic effects of PN in lung cancer cells...
July 18, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28724889/aptamer-mediated-survivin-rnai-enables-5-fluorouracil-to-eliminate-colorectal-cancer-stem-cells
#17
Hadi AlShamaileh, Tao Wang, Dongxi Xiang, Wang Yin, Phuong Ha-Lien Tran, Roberto A Barrero, Pei-Zhuo Zhang, Yong Li, Lingxue Kong, Ke Liu, Shu-Feng Zhou, Yingchun Hou, Sarah Shigdar, Wei Duan
The development of chemoresistance and inability in elimination of cancer stem cells are among the key limitations of cancer chemotherapy. Novel molecular therapeutic strategies able to overcome such limitations are urgently needed for future effective management of cancer. In this report, we show that EpCAM-aptamer-guided survivin RNAi effectively downregulated survivin both in colorectal cancer cells in vitro and in a mouse xenograft model for colorectal cancer. When combined with the conventional chemotherapeutic agents, the aptamer-guided survivin RNAi was able to enhance the sensitivity towards 5-FU or oxaliplatin in colorectal cancer stem cells, increase apoptosis, inhibit tumour growth and improve the overall survival of mice bearing xenograft colorectal cancer...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28718806/the-inhibitory-activity-of-luzonicosides-from-the-starfish-echinaster-luzonicus-against-human-melanoma-cells
#18
Olesya S Malyarenko, Sergey A Dyshlovoy, Alla A Kicha, Natalia V Ivanchina, Timofey V Malyarenko, Bokemeyer Carsten, von Amsberg Gunhild, Valentin A Stonik, Svetlana P Ermakova
Malignant melanoma is the most dangerous form of skin cancer, with a rapidly increasing incidence rate. Despite recent advances in melanoma research following the approval of several novel targeted and immuno-therapies, the majority of oncological patients will ultimately perish from the disease. Thus, new effective drugs are still required. Starfish steroid glycosides possess different biological activities, including antitumor activity. The current study focused on the determination of the in vitro inhibitory activity and the mechanism of action of cyclic steroid glycosides isolated from the starfish Echinaster luzonicus-luzonicoside A (LuzA) and luzonicoside D (LuzD)-in human melanoma RPMI-7951 and SK-Mel-28 cell lines...
July 18, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28713983/malformin%C3%A2-a1-treatment-alters-invasive-and-oncogenic-phenotypes-of-human-colorectal-cancer-cells-through-stimulation-of-the-p38-signaling-pathway
#19
Sun-Young Park, Hyung-Hoon Oh, Young-Lan Park, Hyung-Min Yu, Dae-Seong Myung, Sung-Bum Cho, Wan-Sik Lee, Daeho Park, Young-Eun Joo
Malformin A1 (MA1), a cyclic pentapeptide isolated from Aspergillus niger, has been found to possess a range of bioactive properties including antibacterial activity. However, it is unclear whether MA1 exerts an anticancer effect or not. In this study, we conducted in vitro experiments to investigate its anticancer properties in human colorectal cancer cells. The effect of MA1 on human colorectal cancer cells, SW480 and DKO1, was examined by the WST-1 cell viability assay, inverted microscopy, 5-bromo-2-deoxyuridine (BrdU) incorporation, flow cytometry, DNA fragmentation, wound healing, Transwell assays, and western blotting...
July 10, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28713892/trichostatin%C3%A2-a-induces-bladder-cancer-cell-death-via-intrinsic-apoptosis-at-the-early%C3%A2-phase-and-sp1%C3%A2-survivin-downregulation-at-the-late%C3%A2-phase-of-treatment
#20
Shou-Chieh Wang, Shou-Tsung Wang, Hung-Te Liu, Xiang-Yu Wang, She-Ching Wu, Lei-Chin Chen, Yi-Wen Liu
Histone deacetylase (HDAC) inhibitors have been widely shown to result in cancer cell death. The present study investigated the mechanisms underlying the antitumor effects of the phytochemical trichostatin A (TSA), a classic pan-HDAC inhibitor, in 5,637 urinary bladder cancer cells. It was found that TSA caused cell cycle arrest at the G2/M and G1 phase accompanied by reduced expression of cyclin D1 and upregulated induction of p21. In addition, TSA induced morphological changes, reduced cell viability and apoptotic cell death in 5,637 cells through caspase-3 activation followed by PARP cleavage...
July 6, 2017: Oncology Reports
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