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Apoptosis survivin

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https://www.readbyqxmd.com/read/28533436/metformin-synergizes-with-bcl-xl-bcl-2-inhibitor-abt-263-to-induce-apoptosis-specifically-in-p53-defective-cancer-cells
#1
Xinzhe Li, Bo Li, Zhenhong Ni, Peng Zhou, Bin Wang, Jintao He, Haojun Xiong, Fan Yang, Yaran Wu, Xilin Lyu, Yan Zhang, Yijun Zeng, Jiqin Lian, Fengtian He
p53 deficiency, a frequent event in multiple kinds of malignancies, decreases the sensitivity of diverse targeted chemotherapeutics including the BCL-XL/BCL-2 inhibitor ABT-263. Loss of p53 function can activate mTOR complex 1 (mTORC1), which may make it a vulnerable target. Metformin has shown anti-neoplastic efficiency partially through suppressing mTORC1. However, it remains unknown whether mTORC1 activation confers ABT-263 resistance and whether metformin can overcome it in the p53-defective contexts. In this study, we for the first time demonstrated that metformin and ABT-263 synergistically elicited remarkable apoptosis through orchestrating the pro-apoptotic machineries in various p53-defective cancer cells...
May 22, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28531143/a-4-phenoxyphenol-derivative-exerts-inhibitory-effects-on-human-hepatocellular-carcinoma-cells-through-regulating-autophagy-and-apoptosis-accompanied-by-downregulating-%C3%AE-tubulin-expression
#2
Wen-Tsan Chang, Wangta Liu, Yi-Han Chiu, Bing-Hung Chen, Shih-Chang Chuang, Yen-Chun Chen, Yun-Tzh Hsu, Mei-Jei Lu, Shean-Jaw Chiou, Chon-Kit Chou, Chien-Chih Chiu
Hepatocellular carcinoma (HCC) is a leading cancer worldwide. Advanced HCCs are usually resistant to anticancer drugs, causing unsatisfactory chemotherapy outcomes. In this study, we showed that a 4-phenoxyphenol derivative, 4-[4-(4-hydroxyphenoxy)phenoxy]phenol (4-HPPP), exerts an inhibitory activity against two HCC cell lines, Huh7 and Ha22T. We further investigated the anti-HCC activities of 4-HPPP, including anti-proliferation and induction of apoptosis. Our results showed that higher dosage of 4-HPPP downregulates the expression of α-tubulin and causes nuclear enlargement in both the Huh-7 and Ha22T cell lines...
May 21, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28529625/tuberostemonine-reverses-multidrug-resistance-in-chronic-myelogenous-leukemia-cells-k562-adr
#3
Yu Jia Wang, Huan Dong Zhao, Cai Feng Zhu, Jian Li, Hong Juan Xie, Yu Xiang Chen
Objective: To investigate the reversal effect of tuberostemonine on MDR in myelogenous leukemia cells K562/ADR. Methods: Human myelogenous leukemia cells K562 and their adriamycin-resistance cells K562/ADR were used. The growth curve of cells treated by tuberostemonine and the Non-toxic concentration of tuberostemonine were determined by MTT, Cell apoptosis was determined by MTT and flow cytometry. The expression of MDR1, Survivin and Livin was detected by RT-PCR. The activity of P-gp was detected by flow cytometry...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28529566/tgf-%C3%AE-1-signaling-pathway-serves-a-role-in-hepg2-cell-regulation-by-affecting-the-protein-expression-of-pcna-gankyrin-p115-xiap-and-survivin
#4
Xin-Hong Wang, Zhi-Guo Chen, Rui-Ling Xu, Cheng-Qian Lv, Jing Liu, Bing Du
The transforming growth factor-β (TGF-β) signaling pathway serves a key role in the pathogenesis of liver cancer. To investigate the association between TGF-β1 and the following proteins: Proliferating cell nuclear antigen (PCNA), gankyrin, general vesicular transport factor p115 (p115), X-linked inhibitor of apoptosis protein (XIAP) and survivin, HepG2 liver cancer cells were transfected with small interfering RNA (siRNA) directed against TGF-β1, or were treated with exogenous TGF-β1. TGF-β1 protein expression levels were assessed at 72 and 96 h using western blotting, cell growth was evaluated using a Cell Counting kit-8 assay, and flow cytometry was used to examine cell cycle distribution and apoptosis...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28529560/ruanjian-sanjie-decoction-exhibits-antitumor-activity-by-inducing-cell-apoptosis-in-breast-cancer
#5
Xiumei Zhao, Jing Zhao, Renjie Hu, Qiang Yao, Guixian Zhang, Hongsheng Shen, Ernesto Yagüe, Yunhui Hu
Traditional Chinese medicine, based on theories developed and practiced for >2,000 years, is one of the most common complementary and alternative types of medicine currently used in the treatment of patients with breast cancer. Ruanjian Sanjie (RJSJ) decoction, is composed of four herbs, including Ban xia (Pinellia ternata), Xia ku cao (Prunella vulgaris), Shan ci gu (Cremastra appendiculata) and Hai zao (Sargassum pallidum), and has traditionally been used for softening hard lumps and resolving hard tissue masses...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28529481/topical-ophthalmic-formulation-of-trichostatin-a-and-surr9-c84a-for-quick-recovery-post-alkali-burn-of-corneal-haze
#6
Kislay Roy, Chun Hei Antonio Cheung, Rupinder K Kanwar, Rajat Sandhir, Jagat R Kanwar
Alkali burn injury is a true ocular emergency of the conjunctiva and cornea that requires immediate precision. Lack of an immediate therapy can lead to a substantial damage in the ocular surface and anterior segment further causing visual impairment and disfigurement. We explored the regenerative capability of dominant negative survivin protein (SurR9-C84A) and histone deacetylase inhibitor trichostatin-A (TSA) in vivo, in a rat alkali burn model. A topical insult in rat eyes with NaOH led to degradation of the conjunctival and corneal epithelium...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28525387/sestrin-2-suppresses-cells-proliferation-through-ampk-mtorc1-pathway-activation-in-colorectal-cancer
#7
Jin-Lai Wei, Min Fang, Zhong-Xue Fu, Shou-Ru Zhang, Jin-Bao Guo, Rong Wang, Zhen-Bing Lv, Yong-Fu Xiong
Sestrin 2 is a conserved antioxidant protein that reduces reactive oxygen species (ROS) and inhibits mammalian target of rapamycin complex 1 (mTORC1). We previously showed that sestrin 2 is abnormally decreased in colorectal cancer (CRC). To elucidate the molecular mechanism behind the potential contribution of sestrin 2 to CRC, we used a lentiviral expression vector system to determine the effects of sestrin 2 overexpression on human CRC cells. We found that sestrin 2 overexpression decreased ROS production, inhibited cell growth, and stimulated apoptosis in two CRC cell lines...
May 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28518147/survivin-a-key-player-in-cancer-progression-increases-in-obesity-and-protects-adipose-tissue-stem-cells-from-apoptosis
#8
Miriam Ejarque, Victòria Ceperuelo-Mallafré, Carolina Serena, Gisela Pachón, Yaiza Núñez-Álvarez, Margarida Terrón-Puig, Enrique Calvo, Catalina Núñez-Roa, Wilfredo Oliva-Olivera, Francisco J Tinahones, Miguel Angel Peinado, Joan Vendrell, Sonia Fernández-Veledo
Adipose tissue (AT) has a central role in obesity-related metabolic imbalance through the dysregulated production of cytokines and adipokines. In addition to its known risk for cardiovascular disease and diabetes, obesity is also a major risk for cancer. We investigated the impact of obesity for the expression of survivin, an antiapoptotic protein upregulated by adipokines and a diagnostic biomarker of tumor onset and recurrence. In a cross-sectional study of 111 subjects classified by body mass index, circulating levels of survivin and gene expression in subcutaneous AT were significantly higher in obese patients and positively correlated with leptin...
May 18, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28509321/evaluation-of-tissue-metalloproteinase-inhibitor-timp-1-and-survivin-levels-during-third-trimester-pregnancy-a-preliminary-report
#9
Agata Karowicz-Bilińska, Urszula Kowalska-Koprek, Dorota Estemberg, Anita Sikora-Szubert
OBJECTIVES: A proper implantation of trophoblastic cells and an appropriate metalloproteinases activity is required to cause disintegration of basal membranes of cells. The activity of tissue matrix metaloproteinases can be inhibited by their matrix inhibitors - TIMP-s. Survivin is a member of inhibitor of apoptosis proteins family (IAP), that suppresses caspase activation, influences VEGF expression and promotes proliferative action of endothelial cells. MATERIAL AND METHODS: The aim of the study was to assess concentrations of two independent anti-apoptotic factors...
2017: Ginekologia Polska
https://www.readbyqxmd.com/read/28508718/frondoside-a-induces-aif-associated-caspase-independent-apoptosis-in-burkitt-lymphoma-cells
#10
Sergey A Dyshlovoy, Stefanie Rast, Jessica Hauschild, Katharina Otte, Winfried H Alsdorf, Ramin Madanchi, Vladimir I Kalinin, Alexandra S Silchenko, Sergey A Avilov, Judith Dierlamm, Friedemann Honecker, Valentin A Stonik, Carsten Bokemeyer, Gunhild von Amsberg
For patients with refractory or relapsed Burkitt lymphoma (BL), no standard therapy is available for second-line treatment to date. Nonfunctional caspases-dependent apoptosis pathways, inactivating p53 mutations and pro-survival autophagy prevent activity of conventional chemotherapy. Thus, new drugs bypassing these mechanisms of resistance are required. Here, we investigated the efficacy of the marine natural compound frondoside A (FrA) in eight BL cell lines. FrA revealed cytotoxic effects in all cell lines tested including the multiresistant CA46 cells...
May 16, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28506699/cra-crosolic-acid-isolated-from-actinidia-valvata-dunn-radix-induces-apoptosis-of-human-gastric-cancer-cell-line-bgc823-in%C3%A2-vitro-via-down-regulation-of-the-nf-%C3%AE%C2%BAb-pathway
#11
Qi-Lai Cheng, Hong-Liang Li, Ying-Chen Li, Zhao-Wen Liu, Xiao-Hua Guo, Yi-Jian Cheng
A natural ursolic compound, 2α,3β-dihydroxy-urs-12-en-28-oic acid (corosolic acid, CRA) was isolated from the root of Actinidia valvata Dunn. (A. valvata Radix). Since a large number of triterpenoid compound has marked anticancer effects toward various types of cancer cell lines in vitro, this study was carried out to investigate the anticancer effect of CRA in human gastric cancer cell line BGC823 cells and the underlying apoptotic mechanism of CRA was examined in BGC823 cell lines. The results showed that CRA significantly suppressed the viability of BGC823 cells in a concentration- and time-dependent manner...
May 12, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28505590/apoptosis-induction-activity-and-molecular-docking-studies-of-survivin-sirna-carried-by-fe3o4-peg-lac-chitosan-pei-nanoparticles-in-mcf-7-human-breast-cancer-cells
#12
Sanam Arami, Majid Mahdavi, Mohammad-Reza Rashidi, Reza Yekta, Mohammad Rahnamay, Leila Molavi, Mohammad-Saeid Hejazi, Nasser Samadi
Delivery of small interfering RNAs (siRNAs) into cells still remains a challenge in gene delivery studies. Here, we investigated the ability of synthesized Fe3O4-PEG-LAC-chitosan-PEI nanoparticles for siRNA delivery of survivin as the model gene into cells. The cellular uptake of survivin siRNA carried by synthesized nanoparticles into MCF-7 breast cancer cell line was evaluated by florescent microscopy and flowcytometry, both proving the efficacy of nanoparticles in delivery of up to 64.7% in comparison with lipofectamine 2000...
May 6, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28494251/nitric-oxide-releasing-derivatives-of-brefeldin-a-as-potent-and-highly-selective-anticancer-agents
#13
Kangtao Tian, Fanxing Xu, Xiang Gao, Tong Han, Jia Li, Huaqi Pan, Linghe Zang, Dahong Li, Zhanlin Li, Takahiro Uchita, Ming Gao, Huiming Hua
A series of NO-donating mono- or diester derivatives of brefeldin A were designed, synthesized and biologically evaluated. Some derivatives exhibited potent antiproliferative activity with low IC50 values. The most potent NO-donating hybrid 13b exhibited stronger cytotoxicity against human prostate cancer PC-3 cells, human colon carcinoma HT-29 cells and human liver cancer HepG-2 cells than BFA with IC50 values of 25 nM, 160 nM and 180 nM, respectively. More importantly, compound 13b showed good selectivity between human normal and tumor liver cells with selectivity index of 33...
May 5, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28492491/magnetic-cationic-amylose-nanoparticles-used-to-deliver-survivin-small-interfering-rna-for-gene-therapy-of-hepatocellular-carcinoma-in-vitro
#14
Zhuo Wu, Xiao-Lin Xu, Jun-Zhao Zhang, Xu-Hong Mao, Ming-Wei Xie, Zi-Liang Cheng, Lie-Jing Lu, Xiao-Hui Duan, Li-Ming Zhang, Jun Shen
Amylose is a promising nanocarrier for gene delivery in terms of its good biocompatibility and high transfection efficiency. Small interfering RNA against survivin (survivin-siRNA) can cause tumor apoptosis by silencing a hepatocellular carcinoma (HCC)-specific gene at the messenger RNA level. In this study, we developed a new class of folate-functionalized, superparamagnetic iron oxide (SPIO)-loaded cationic amylose nanoparticles to deliver survivin-siRNA to HCC cells. The cellular uptake of nanocomplexes, cytotoxicity, cell apoptosis, and gene suppression mediated by siRNA-complexed nanoparticles were tested...
May 11, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28476028/hif-2%C3%AE-dictates-the-susceptibility-of-pancreatic-cancer-cells-to-trail-by-regulating-survivin-expression
#15
Nanae Harashima, Keizo Takenaga, Miho Akimoto, Mamoru Harada
Cancer cells develop resistance to therapy by adapting to hypoxic microenvironments, and hypoxia-inducible factors (HIFs) play crucial roles in this process. We investigated the roles of HIF-1α and HIF-2α in cancer cell death induced by tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL) using human pancreatic cancer cell lines. siRNA-mediated knockdown of HIF-2α, but not HIF-1α, increased susceptibility of two pancreatic cancer cell lines, Panc-1 and AsPC-1, to TRAIL in vitro under normoxic and hypoxic conditions...
April 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28475649/blocking-smad2-signalling-with-loganin-attenuates-sw10-cell-cycle-arrest-induced-by-tnf-%C3%AE
#16
Gao Chao, Xiaoning Tian, Wentao Zhang, Xuehai Ou, Fei Cong, Tao Song
The activity of Schwann cells (SWCs) is very important in trauma-induced nerve repair, and tumour necrosis factor-α (TNF-α) produced during tissue injury inhibits the viability of SWCs, which delays the repair of peripheral nerves. Loganin is an iridoid glycoside that has been shown to alleviate a variety of cytotoxic effects. In the current study, we evaluated the potential efficacy and the mechanism of action of loganin in TNF-α-induced cytotoxicity in SW10 cells. The experimental results indicated that loganin blocked TNF-α-mediated Smad2 activation, downregulated the expression of the G1 phase cell cycle inhibitor p15IN4KB, and upregulated the expression of the G1 phase cell cycle activator cyclin D1-CDK4/6, which upregulated E2F-1-dependent survivin expression and relieved TNF-α-induced apoptosis in SW10 cells...
2017: PloS One
https://www.readbyqxmd.com/read/28468627/the-omega-3-polyunsaturated-fatty-acid-docosahexaenoic-acid-inhibits-proliferation-and-progression-of-non-small-cell-lung-cancer-cells-through-the-reactive-oxygen-species-mediated-inactivation-of-the-pi3k-akt-pathway
#17
Yuanqin Yin, Chengguang Sui, Fandong Meng, Ping Ma, Youhong Jiang
BACKGROUND: Docosahexaenoic acid(DHA) inhibits tumor growth and progression in various cancers, including lung cancer. However, the mechanisms involved remain unclear. The aim of this study was to identify the mechanism of DHA in inhibiting progression of non-small cell lung cancer (NSCLC) in vitro. METHODS: The proliferation of A549 was tested by MTT, and cell apoptosis was analysed using flow cytometer. The migration and invasion were examined respectively by wound healing assay and Transwell invasion assay...
May 3, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28464236/neuroprotection-by-plumbagin-involves-bdnf-trkb-pi3k-akt-and-erk1-2-jnk-pathways-in-isoflurane-induced-neonatal-rats
#18
Jun-Hui Yuan, Feng Pan, Jie Chen, Cai-Er Chen, Deng-Pan Xie, Xing-Zhu Jiang, Su-Juan Guo, Jun Zhou
OBJECTIVES: This study was designed to assess the effects of plumbagin on isoflurane-induced neurotoxicity. METHODS: Neonatal Sprague Dawley rat pups were treated with plumbagin (50, 100 or 150 mg/kg body weight, orally) from postnatal day 2. The pups on postnatal day 7 were subjected to isoflurane (0.75%) exposure for 6 h. Neuronal apoptosis in the hippocampal tissues was detected by TUNEL assay and FluroJade B staining following isoflurane exposure. Protein expressions were analysed by immunoblotting...
May 2, 2017: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/28463235/perturbations-in-the-apoptotic-pathway-and-mitochondrial-network-dynamics-in-peripheral-blood-mononuclear-cells-from-bipolar-disorder-patients
#19
G Scaini, G R Fries, S S Valvassori, C P Zeni, G Zunta-Soares, M Berk, J C Soares, J Quevedo
Bipolar disorder (BD) is a severe psychiatric disorder characterized by phasic changes of mood and can be associated with progressive structural brain change and cognitive decline. The numbers and sizes of glia and neurons are reduced in several brain areas, suggesting the involvement of apoptosis in the pathophysiology of BD. Because the changes in mitochondrial dynamics are closely related with the early process of apoptosis and the specific processes of apoptosis and mitochondrial dynamics in BD have not been fully elucidated, we measured the apoptotic pathway and the expression of mitochondrial fission/fusion proteins from BD patients and healthy controls...
May 2, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28460470/a-novel-oncolytic-adenovirus-based-on-simian-adenovirus-serotype-24
#20
Tao Cheng, Yufeng Song, Yan Zhang, Chao Zhang, Jieyun Yin, Yudan Chi, Dongming Zhou
Among the oncolytic virotherapy, an emerging treatment for tumor, adenoviruses are widely used at present in preclinical and clinical trials. Traditionally, oncolytic adenoviruses were developed based on the human adenovirus serotype 5 (AdHu5). However, AdHu5 has the drawbacks of preexisting anti-AdHu5 immunity in most populations, and extensive sequestration of Adhu5 by the liver through hexon, blood coagulation factor X (FX), and FX receptor interactions. To tackle these problems, we explored a novel oncolytic adenovirus AdC7-SP/E1A-ΔE3 for cancer treatment...
April 18, 2017: Oncotarget
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