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https://www.readbyqxmd.com/read/28628188/silencing-of-bag3-promotes-the-sensitivity-of-ovarian-cancer-cells-to-cisplatin-via-inhibition-of-autophagy
#1
Shuang Qiu, Liang Sun, Ye Jin, Qi An, Changjiang Weng, Jianhua Zheng
Ovarian cancer is the most lethal disease among all gynecological malignancies. Interval cytoreductive surgery and cisplatin‑based chemotherapy are the recommended therapeutic strategies. However, acquired resistance to cisplatin remains a big challenge for the overall survival and prognosis in ovarian cancer. Complicated molecular mechanisms are involved in the process. At present, increasing evidence indicates that autophagy plays an important role in the prosurvival and resistance against chemotherapy...
July 2017: Oncology Reports
https://www.readbyqxmd.com/read/28628119/differential-expression-of-mir16-in-glioblastoma-and-glioblastoma-stem-cells-their-correlation-with-proliferation-differentiation-metastasis-and-prognosis
#2
R Tian, J Wang, H Yan, J Wu, Q Xu, X Zhan, Z Gui, M Ding, J He
The function of miR16 in multiforme glioblastoma multiforme (GBM) and its stem cells (GSCs) remains elusive. To this end, we investigated the patterns of miR16 expression in these cells and their correlation with malignant behaviors and clinical outcomes. The levels of miR16 and its targeted genes in tumor tissue of GBM and GBM SGH44, U87, U251 cells as well as their stem cell counterparts were measured by qRT-PCR or western blot or immunohistochemistry. Luciferase reporter assay was used to confirm the binding of miR16 to 3'-UTR of its target genes...
June 19, 2017: Oncogene
https://www.readbyqxmd.com/read/28617849/protective-effect-of-hdl-on-nadph-oxidase-derived-super-oxide-anion-mediates-hypoxia-induced-cardiomyocyte-apoptosis
#3
Su-Ying Wen, Shanmugam Tamilselvi, Chia-Yao Shen, Cecilia Hsuan Day, Li-Chin Chun, Li-Yi Cheng, Hsiu-Chung Ou, Ray-Jade Chen, Vijaya Padma Viswanadha, Wei-Wen Kuo, Chih-Yang Huang
Cardiovascular diseases are the leading cause of death of death in Taiwan. Atherosclerosis can lead to serious problems, including heart attack, stroke, or even death. Coronary heart disease (CHD) occurs when plaque builds up in the coronary arteries to cause the ischemic heart disease which will enhance myocardial remodeling and also induce myocardial hypoxia. High density lipoprotein (HDL) has been proposed to have cardio-protective effects. Under hypoxic conditions (1%O2 for 24hr), in H9c2 cells, reactive oxygen species (ROS) is induced which leads to cardiomyocyte apoptosis and cardiac dysfunction...
2017: PloS One
https://www.readbyqxmd.com/read/28601699/apoptotic-induction-mediated-p53-mechanism-and-caspase-3-activity-by-novel-promising-cyanoacrylamide-derivatives-in-breast-carcinoma
#4
Magda F Mohamed, Noha Samir, Aya Ali, Nawal Ahmed, Yassmen Ali, Sarah Aref, Omnia Hossam, Mervat S Mohamed, Amr M Abdelmoniem, Ismail A Abdelhamid
New cyanoacrylamide derivatives were theoretically examined for their binding abilities to a protein model of apoptosis inhibitor proteins x-IAP and c-IAP1 using molecular modeling. The two compounds 5a and 5b proved promising IAP antagonists, where they have good binding affinity toward the selected active domains. Anticancer activity of all derivatives was performed on different human cancer cell lines (HCT116, Caco2, and MCF7) as well as normal line (HBF4). Data revealed that breast carcinoma was more sensitive to the novel compounds than other lines especially compounds 5a and 5b, but all derivatives lost their cytotoxic effect in case of Caco2 cell line and they showed low cytotoxic effect toward HCT116 cells except compound 3...
June 1, 2017: Bioorganic Chemistry
https://www.readbyqxmd.com/read/28596506/by-up-regulating-%C3%AE-and-%C3%AE-opioid-receptors-neuron-restrictive-silencer-factor-knockdown-promotes-neurological-recovery-after-ischemia
#5
Hui-Min Liang, Li-Jiao Geng, Xiao-Yan Shi, Chao-Gang Zhang, Shu-Yan Wang, Guang-Ming Zhang
We investigated the effects of neuron-restrictive silencer factor (NRSF) on proliferation of endogenous nerve stem cells (NSCs) and on μ- and δ-opioid receptor (MOR/DOR) expression in rats after cerebral ischemia. Among 100 rats subjected to cerebral ischemia, 20 rats were transfected with NRSF shRNA, and the remaining 80 were randomly assigned to normal, sham, model, and negative control (NC) groups. On days 7, 14, and 28 after ischemia and reperfusion, neurological function scores were assigned and a step-down passive avoidance test was conducted...
May 23, 2017: Oncotarget
https://www.readbyqxmd.com/read/28589248/quercetin-and-tin-protoporphyrin-attenuate-hepatic-ischemia-reperfusion-injury-role-of-ho-1
#6
Yara Atef, Hassan M El-Fayoumi, Yousra Abdel-Mottaleb, Mona F Mahmoud
Ischemia reperfusion (IR) injury occurs in many clinical situations such as organ transplantation and hepatectomies resulting in oxidative stress and immune activation. Heme oxygenase-1(HO-1) is the rate-limiting step in the heme-degradation pathway and has a critical cytoprotective role. Induction of HO-1 improves liver I/R injury. Quercetin, a plant pigment (flavonoid), is an antioxidant and HO-1 inducer. Tin protoporphyrin (SnPP) is a HO-1 inhibitor. This study was designed to investigate the protective effect of quercetin in hepatic I/R injury and the role of HO-1...
June 6, 2017: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/28588318/inhibition-of-autophagy-prevents-cadmium-induced-prostate-carcinogenesis
#7
Deeksha Pal, Suman Suman, Venkatesh Kolluru, Sophia Sears, Trinath P Das, Houda Alatassi, Murali K Ankem, Jonathan H Freedman, Chendil Damodaran
BACKGROUND: Cadmium, an established carcinogen, is a risk factor for prostate cancer. Induction of autophagy is a prerequisite for cadmium-induced transformation and metastasis. The ability of Psoralidin (Pso), a non-toxic, orally bioavailable compound to inhibit cadmium-induced autophagy to prevent prostate cancer was investigated. METHODS: Psoralidin was studied using cadmium-transformed prostate epithelial cells (CTPE), which exhibit high proliferative, invasive and colony forming abilities...
June 6, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28581513/kif26b-a-novel-oncogene-promotes-proliferation-and-metastasis-by-activating-the-vegf-pathway-in-gastric-cancer
#8
H Zhang, R-R Ma, X-J Wang, Z-X Su, X Chen, D-B Shi, X-Y Guo, H-T Liu, P Gao
Tumor metastasis is the main reason of cancer-related death for gastric cancer (GC) patients and gene expression microarray data indicate that kinesin family member 26B (KIF26B) is one of the most upregulated genes in metastatic GC samples. Specifically, KIF26B expression was upregulated in a stepwise manner from non-tumorous gastric mucosa, primary GC tissues without metastasis, via primary GC tissues with metastasis, to secondary lymph node metastatic (LNM) foci. Increased expression of KIF26B was correlated with tumor size, positive LNM or distant metastases and poor prognosis...
June 5, 2017: Oncogene
https://www.readbyqxmd.com/read/28579554/stat3-gain-of-function-mutations-associated-with-autoimmune-lymphoproliferative-syndrome-like-disease-deregulate-lymphocyte-apoptosis-and-can-be-targeted-by-bh3-mimetic-compounds
#9
Schafiq Nabhani, Cyrill Schipp, Hagit Miskin, Carina Levin, Sergey Postovsky, Tal Dujovny, Ariel Koren, Dan Harlev, Anne-Marie Bis, Franziska Auer, Baerbel Keller, Klaus Warnatz, Michael Gombert, Sebastian Ginzel, Arndt Borkhardt, Polina Stepensky, Ute Fischer
Autoimmune lymphoproliferative syndrome (ALPS) is typically caused by mutations in genes of the extrinsic FAS mediated apoptotic pathway, but for about 30% of ALPS-like patients the genetic diagnosis is lacking. We analyzed 30 children with ALPS-like disease of unknown cause and identified two dominant gain-of-function mutations of the Signal Transducer And Activator Of Transcription 3 (STAT3, p.R278H, p.M394T) leading to increased transcriptional activity. Hyperactivity of STAT3, a known repressor of FAS, was associated with decreased FAS-mediated apoptosis, mimicking ALPS caused by FAS mutations...
June 1, 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/28569785/cytoprotective-effect-of-neuropeptides-on-cancer-stem-cells-vasoactive-intestinal-peptide-induced-antiapoptotic-signaling
#10
Konduru S Sastry, Aouatef Ismail Chouchane, Ena Wang, George Kulik, Francesco M Marincola, Lotfi Chouchane
Cancer stem cells (CSCs) are increasingly considered to be responsible for tumor initiation, metastasis and drug resistance. The drug resistance mechanisms activated in CSCs have not been thoroughly investigated. Although neuropeptides such as vasoactive intestinal peptide (VIP) can promote tumor growth and activate antiapoptotic signaling in differentiated cancer cells, it is not known whether they can activate antiapoptotic mechanisms in CSCs. The objectives of this study are to unravel the cytoprotective effects of neuropeptides and identify antiapoptotic mechanisms activated by neuropeptides in response to anticancer drug treatment in CSCs...
June 1, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28566733/a-benzothiazole-derivative-5g-induces-dna-damage-and-potent-g2-m-arrest-in-cancer-cells
#11
Mahesh Hegde, Supriya V Vartak, Chandagirikoppal V Kavitha, Hanumappa Ananda, Doddakunche S Prasanna, Vidya Gopalakrishnan, Bibha Choudhary, Kanchugarakoppal S Rangappa, Sathees C Raghavan
Chemically synthesized small molecules play important role in anticancer therapy. Several chemical compounds have been reported to damage the DNA, either directly or indirectly slowing down the cancer cell progression by causing a cell cycle arrest. Direct or indirect reactive oxygen species formation causes DNA damage leading to cell cycle arrest and subsequent cell death. Therefore, identification of chemically synthesized compounds with anticancer potential is important. Here we investigate the effect of benzothiazole derivative (5g) for its ability to inhibit cell proliferation in different cancer models...
May 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28560697/the-cardiotoxic-mechanism-of-doxorubicin-dox-and-pegylated-liposomal-dox-in-mice-bearing-c-26-colon-carcinoma-a-study-focused-on-microrna-role-for-toxicity-assessment-of-new-formulations
#12
Kamal Razavi-Azarkhiavi, Mahmoud Reza Jaafari, Khalil Abnous, Bibi Marjan Razavi, Amir Hossein Jafarian, Faezeh Vahdati Hassani, Kobra Shirani, Gholamreza Karimi
PURPOSE: MicroRNAs (miRs) are a group of small non-coding RNAs that regulate transcriptional or post-transcriptional gene expression. The aim of the present study was to investigate the role of miR -1, -21 and -145 and their targets in cardiotoxicity-induced by DOX and pegylated liposomal DOX. METHODS: BALB/c mice subjected to subcutaneous injection of C-26 tumor cells. Eight days after tumor inoculation, animals were divided into 6 groups: control, liposome, DOX (6 and 9 mg/kg) and PL-DOX (6 and 9 mg/kg)...
May 30, 2017: Pharmaceutical Research
https://www.readbyqxmd.com/read/28559996/microrna-199a-3p-inhibits-tumorigenesis-of-hepatocellular-carcinoma-cells-by-targeting-zhx1-puma-signal
#13
Jinping Guan, Zimin Liu, Menjing Xiao, Fengyun Hao, Chenghong Wang, Yan Chen, Yingying Lu, Jun Liang
BACKGROUND AND OBJECTIVE: MicroRNAs play an important role in cell proliferation, apoptosis, differentiation, and invasion by regulating the expression of various genes. For example, the downregulation of microRNA-199a-3p (miR-199a-3p) that is noted in numerous human malignancies, including hepatocellular carcinoma (HCC), results in a poor prognosis in patients with HCC. This finding suggests that miR-199a-3p overexpression in HCC could provide a new treatment approach. We explored this possibility by examining the effects of miR-199a-3p on the growth and apoptosis of HCC cells in vitro and vivo...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28553235/4-phenylbutyrate-mitigates-fluoride-induced-cytotoxicity-in-alc-cells
#14
Maiko Suzuki, Eric T Everett, Gary M Whitford, John D Bartlett
Chronic fluoride over-exposure during pre-eruptive enamel development can cause dental fluorosis. Severe dental fluorosis is characterized by porous, soft enamel that is vulnerable to erosion and decay. The prevalence of dental fluorosis among the population in the USA, India and China is increasing. Other than avoiding excessive intake, treatments to prevent dental fluorosis remain unknown. We previously reported that high-dose fluoride induces endoplasmic reticulum (ER) stress and oxidative stress in ameloblasts...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28551635/enhanced-susceptibility-to-5-fluorouracil-in-human-colon-cancer-cells-by-silencing-of-grp78
#15
Seungpil Yun, Yong-Seok Han, Jun Hee Lee, Sangmin Kim, Sang Hun Lee
BACKGROUND: Glucose-regulated protein (GRP78), also known as immunoglobulin heavy chain binding protein and as heat shock 70 kDa protein 5, is present in the endoplasmic reticulum (ER) membrane. GRP78 is generally expressed at low concentrations, but is increased by physiological stress. GRP78 is thought to protect against tissue or organ damage under pathological conditions, such as neurotoxic stress, myocardial infarction, or arteriosclerosis. In addition, in tumors, GRP78 expression is much higher than in normal tissues...
June 2017: Anticancer Research
https://www.readbyqxmd.com/read/28551013/citrus-nomilin-down-regulates-tnf-%C3%AE-induced-proliferation-of-aortic-smooth-muscle-cells-via-apoptosis-and-inhibition-of-i%C3%AE%C2%BAb
#16
Jinhee Kim, Sanjukta Chakraborty, G K Jayaprakasha, Mariappan Muthuchamy, Bhimanagouda S Patil
Nomilin is a bitter compound present in citrus and has been demonstrated as useful for various disease preventions through anti-proliferative, anti-inflammatory, and pro-apoptotic activities. Although in vitro disease models have shown that certain limonoids in the p38 mitogen-activated protein kinase signal cascade, the downstream signaling pathways remain unclear. In this study, the effects of nomilin on the proliferation and apoptotic pathways of human aortic smooth muscle cells (HASMCs) that forms the basis of progression of atherosclerotic diseases and restenosis was tested for the first time...
May 24, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28549559/the-novel-indole-3-formaldehyde-2-aitfei-3-f-is-involved-in-processes-of-apoptosis-induction
#17
Mojgan Noroozi Karimabad, Mehdi Mahmoodi, Abdollah Jafarzadeh, Ali Darehkordi, Mohammad Reza Hajizadeh, Hossein Khorramdelazad, Soudeh Khanamani Falahati-Pour, Gholamhossein Hassanshahi
AIM AND OBJECTIVES: Balancing between Bax and Bcl-2 plays critical roles in both proliferation and self-renewal activation of cancer cells. Indole-3-formaldehyde derivatives limit the growth and facilitate cell death in different cell systems. In this study, we introduced a novel indole derivative (2-AITFEI-3-F) with tendency to facilitate apoptosis in NB4 line in comparison to basal Indole-3-formaldehyde (I3F). METHODS: The NB4 cells were cultured in RPMI1640 medium contained 2-AITFEI-3-F and I3F (15...
May 23, 2017: Life Sciences
https://www.readbyqxmd.com/read/28544332/fibroblast-growth-factor-2-protects-against-renal-ischaemia-reperfusion-injury-by-attenuating-mitochondrial-damage-and-proinflammatory-signalling
#18
Xiao-Hua Tan, Xiao-Meng Zheng, Li-Xia Yu, Jian He, Hong-Mei Zhu, Xiu-Ping Ge, Xiao-Li Ren, Fa-Qing Ye, Saverio Bellusci, Jian Xiao, Xiao-Kun Li, Jin-San Zhang
Ischaemia-reperfusion injury (I/RI) is a common cause of acute kidney injury (AKI). The molecular basis underlying I/RI-induced renal pathogenesis and measures to prevent or reverse this pathologic process remains to be resolved. Basic fibroblast growth factor (FGF2) is reported to have protective roles of myocardial infarction as well as in several other I/R related disorders. Herein we present evidence that FGF2 exhibits robust protective effect against renal histological and functional damages in a rat I/RI model...
May 24, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28544240/cell-cycle-synchronization-and-analysis-of-apoptosis-related-gene-in-skin-fibroblasts-from-domestic-cat-felis-silvestris-catus-and-kodkod-leopardus-guigna
#19
D Veraguas, P F Gallegos, F O Castro, L Rodriguez-Alvarez
The kodkod population is in constant decrease and the somatic cell nuclear transfer (SCNT) might help to preserve the genetic pool of this species. The cell cycle synchronization of donor cells plays a crucial role in SCNT. The objective of this research was to evaluate two different methods for quiescence induction, serum starvation (SS) and contact inhibition (CI), both for 1, 3 and 5 days, on skin fibroblast from domestic cat and kodkod. Flow cytometry analysis revealed that in domestic cat, SS and CI, both at 3 and 5 days, increased the percentage of fibroblasts in G0/G1 compared to growing cells (GC) (p < ...
May 22, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28536949/exercise-and-doxorubicin-treatment-modulate-cardiac-mitochondrial-quality-control-signaling
#20
I Marques-Aleixo, E Santos-Alves, J R Torrella, P J Oliveira, J Magalhães, A Ascensão
The cross-tolerance effect of exercise against heart mitochondrial-mediated quality control, remodeling and death-related mechanisms associated with sub-chronic Doxorubicin (DOX) treatment is yet unknown. We therefore analyzed the effects of two distinct chronic exercise models (endurance treadmill training-TM and voluntary free wheel activity-FW) performed during the course of the sub-chronic DOX treatment on mitochondrial susceptibility to permeability transition pore (mPTP), apoptotic and autophagic signaling and mitochondrial dynamics...
May 23, 2017: Cardiovascular Toxicology
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