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Survivin, apoptosis

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https://www.readbyqxmd.com/read/27909997/saururus-chinensis-baill-inhibits-proliferation-and-invasion-of-human-renal-cell-carcinoma-cells-through-inhibition-of-inhibitor-of-apoptosis-protein
#1
Yong Hyun Park, Jung-In Kim, Su Yeon Seo, Eunhye Lee, Hyeon Hoe Kim
OBJECTIVE: To investigate the inhibitory effect of Saururus chinensis Baill on cell viability, apoptosis, invasion capacity and the mechanism involved in human renal cell carcinoma (RCC) cells. METHODS: After treating A498 and ACHN cells with Saururus chinensis Baill extract (0, 25, 50 μg/mL), inhibitory effect of Saururus chinensis Baill were evaluated using tetrazolium salt-based colorimetric assay, flfl ow cytometry analysis, and in vitro Matrigel invasion assay, respectively...
December 1, 2016: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/27901471/esculetin-exerts-anti-proliferative-effects-against-non-small-cell-lung-carcinoma-by-suppressing-specificity-protein-1-in-vitro
#2
Ra H Lee, Young-Joo Jeon, Jin H Cho, Jeong-Yun Jang, Il-Keun Kong, Seok-Ho Kim, MinSeok S Kim, Hak-Jae Chung, Keon B Oh, Seon-Min Park, Jae-Cheon Shin, Jae-Min Seo, Sungho Ko, Jung-Hyun Shim, Jung-Il Chae
Esculetin, a coumarin derivative, is a phenolic compound isolated from Artemisia capillaris, Citrus limonia, and Euphorbia lathyris. Although it has been reported to have anti-inflammatory, anti-oxidant, and anti-proliferative activities in several human cancers, its anti-proliferative activity against non-small-cell lung carcinoma (NSCLC) and the molecular mechanisms involved have not been adequately elucidated. In this study, we used two NSCLC cell lines (NCI-H358 and NCI-H1299) to investigate the anti-proliferative activity and apoptotic effect of esculetin...
November 30, 2016: General Physiology and Biophysics
https://www.readbyqxmd.com/read/27900041/immunohistochemical-expression-and-serum-level-of-survivin-protein-in-colorectal-cancer-patients
#3
Katarzyna Jakubowska, Anna Pryczynicz, Violetta Dymicka-Piekarska, Waldemar Famulski, Katarzyna Guzińska-Ustymowicz
Survivin is one of the apoptosis-related inhibitors that is associated with a more aggressive behavior and a poor prognosis in numerous types of malignancies, including colorectal cancer (CRC). The objective of the present study was to perform immunohistochemical tissue analysis of survivin expression and serum analysis of survivin levels in CRC patients. The study group consisted of 55 CRC patients. Survivin expression was assessed by immunohistochemistry in 38 patients using monoclonal antibodies. Color reactions were observed in the nucleus and cytoplasm of the cancer cells...
November 2016: Oncology Letters
https://www.readbyqxmd.com/read/27895730/osthole-induces-lung-cancer-cell-apoptosis-through-inhibition-of-inhibitor-of-apoptosis-family-proteins
#4
Xiao-Man Xu, Man-Li Zhang, Yi Zhang, Li Zhao
In the present study, we investigated the effects and mechanisms of Osthole on the apoptosis of non-small cell lung cancer (NSCLC) cells and its synergistic effect with Embelin. Our results revealed that treatment with both Osthole and Embelin inhibited cell proliferation. Notably, combination treatment of Osthole and Embelin inhibited cell proliferation more significantly compared with monotherapy. In addition, morphological analysis and Annexin V/propidium iodide analysis revealed that the combination of Osthole and Embelin enhanced their effect on cell apoptosis...
November 2016: Oncology Letters
https://www.readbyqxmd.com/read/27887917/microrna-136-inhibits-cancer-stem-cell-activity-and-enhances-the-anti-tumor-effect-of-paclitaxel-against-chemoresistant-ovarian-cancer-cells-by-targeting-notch3
#5
Ju-Yeon Jeong, Hae-Youn Kang, Tae-Heon Kim, Gwang-Il Kim, Jin-Hyung Huh, Ah-Young Kwon, Se-Wha Kim, Sang-Geun Jung, Hee-Jung An
To identify microRNAs (miRNAs) regulating Notch3 expression in association with paclitaxel resistance, candidate miRNAs targeting Notch3 were predicted using TargetScan. We found that miR-136 directly targets Notch3, and miR-136 was significantly downregulated in OSC tissues relative to normal control tissues, and low expression of miR-136 correlated with poor overall in ovarian cancer patients. Artificial miR-136 overexpression significantly reduced cell viability, proliferation, CSC spheroid formation, and angiogenesis, and increased apoptosis in paclitaxel-resistant SKpac cells compared with the effects of paclitaxel alone...
November 22, 2016: Cancer Letters
https://www.readbyqxmd.com/read/27881007/egcg-sensitizes-human-nasopharyngeal-carcinoma-cells-to-trail-mediated-apoptosis-by-activation-nf-%C3%AE%C2%BAb
#6
P Li, S Li, D Yin, J Li, L Wang, C Huang, X Yang
Aim of presented study was to investigate whether EGCG could sensitize TRAIL resistant NPC cells to TRAIL-mediated apoptosis. Three human NPC cell-lines CNE-1, CNE-2, C666-1 and a non-transformed nasopharyngeal epithelium cell-line NP-69 were treated with EGCG or/and TRAIL. The apoptosis and TRAIL receptors were determined by flow cytometric analysis. The protein expression was determined by western blotting. Mitochondrial transmembrane potential was dertemined by DiOC6 (3). C666-1 cell-line was the only one that resistant to TRAIL and selected to be treated with EGCG...
November 24, 2016: Neoplasma
https://www.readbyqxmd.com/read/27880058/fish-oil-derived-dha-mediated-enhancement-of-apoptosis-in-acute-lymphoblastic-leukemia-cells-is-associated-with-accumulation-of-p53-downregulation-of-survivin-and-caspase-3-activation
#7
Mohammad Reza Sam, Mohammad Esmaeillou, Mohammad Ali Shokrgozar
In acute lymphoblastic leukemia (ALL), resistance to chemotherapy is associated with inactivation of p53 and upregulation of survivin. Thus, targeting the p53 and survivin expression may provide an attractive strategy for ALL treatment. It has been shown that fish-oil-derived docosahexaenoic acid (DHA) activates several antitumorigenic mechanisms in tumor cells, but little is known regarding the role of DHA on modulating p53 and survivin expression in ALL cells. In this study, we investigated the alterations of the p53 and survivin expression and induction of apoptosis in DHA-treated Molt-4 cells that serve as a model for ALL cells...
November 23, 2016: Nutrition and Cancer
https://www.readbyqxmd.com/read/27878237/inhibition-of-the-growth-of-human-melanoma-cells-by-methionine-enkephalin
#8
Dong-Mei Wang, Guang-Chuan Wang, Jing Yang, Nicolas P Plotnikoff, Noreen Griffin, Yu-Man Han, Rui-Qun Qi, Xing-Hua Gao, Feng-Ping Shan
Melanoma is an aggressive cancer, the incidence of which is increasing worldwide. Limited therapies are currently available, particularly following metastasis. The aim of the present study was to investigate the inhibiting effect of methionine enkephalin (MENK) on human melanoma via opioid receptors. The results of the present study revealed that MENK markedly regulates the proliferation of A375 cells, causing cell cycle arrest in G0/G1 phase and a decrease in the percentage of cells in S and G2/M phases. Reverse transcription‑quantitative polymerase chain reaction demonstrated that MENK treatment increased opioid receptor expression in A375 cells...
November 14, 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27868407/-effect-of-dj-1-silencing-by-rna-interference-on-growth-of-xenografted-human-laryngeal-squamous-cell-carcinoma-hep-2-cells-in-nude-mice
#9
Zhisen Shen, Hongxia Deng, Dong Ye, Jian Zhang, Shijie Qiu, Qun Li, Xiang Cui
Objective: To investigate the effect of silencing DJ-1 on xenografted human laryngeal squamous cell carcinoma (LSCC) Hep-2 cells in nude mice. Methods: Xenograft model of human LSCC was established by subcutaneous transplantation of Hep-2 cells in 24 nude mice. The LSCC-bearing nude mice were randomly divided into 3 groups (n=8 in each):DJ-1 siRNA low dose group and DJ-1 siRNA high dose group were injected in tumors with 20 μg of DJ-1 siRNA or 40 μg of DJ-1 siRNA in 50 μL, respectively; control group was injected with 5% glucose solution in 50 μL, twice a week for 3 weeks...
May 25, 2016: Zhejiang da Xue Xue Bao. Yi Xue Ban, Journal of Zhejiang University. Medical Sciences
https://www.readbyqxmd.com/read/27865841/survivin-does-not-influence-the-anti-apoptotic-action-of-xiap-on-caspase-9
#10
Franziska K Zumbrägel, Dominik A Machtens, Ute Curth, Carsten G K Lüder, Thomas F Reubold, Susanne Eschenburg
Survivin inhibits apoptosis in numerous tumor cell lines and has emerged as promising target for cancer therapy. The anti-apoptotic effect of survivin was attributed to a direct interaction with XIAP (X-linked inhibitor of apoptosis) and to an indirect effect, where survivin antagonizes the anti-XIAP action of Smac. The direct interaction is thought to lead to synergistic inhibition of caspase-9 and, at the same time, to enhanced stability of XIAP by reducing its auto-ubiquitination. Using recombinantproteins, we have investigated the influence of survivin on the inhibition of caspase-9 by XIAP in vitro...
November 16, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27864821/effect-of-alterations-in-apoptotic-pathway-on-development-of-metabolic-syndrome-in-patients-with-psoriasis-vulgaris
#11
S Korkmaz, H Korkmaz
OBJECTIVES: The purpose of this study is to evaluate the role of changes in gene expression of apoptosis activators (BAX, cytocrome-c [cyt-c], and caspase-3) and apoptosis inhibitors (BCL2, survivin, cyclin D1 [CCND1], SOD, catalase 3 [CAT], glutathione synthetase [GS], heat shock protein [HSP]27, HSP60, HSP70, and HSP90) on the development of metabolic syndrome (MetS) in patients with psoriasis vulgarins. METHODS: Fifty patients with psoriasis were enrolled in the study, 25 of whom had MetS...
November 18, 2016: British Journal of Dermatology
https://www.readbyqxmd.com/read/27853365/gene-silencing-effects-of-anti-survivin-sirna-delivered-by-rgdv-functionalized-nanodiamond-carrier-in-the-breast-carcinoma-cell-line-mcf-7
#12
Yanzhao Bi, Yifan Zhang, Chunying Cui, Lulu Ren, Xueyun Jiang
Nanodiamond (ND) is a renowned material in nonviral small interfering RNA (siRNA) carrier field due to its unique physical, chemical, and biological properties. In our previous work, it was proven that ND could deliver siRNA into cells efficiently and downregulate the expression of desired protein. However, synthesizing a high-efficient tumor-targeting carrier using ND is still a challenge. In this study, a novel carrier, NDCONH(CH2)2NH-VDGR, was synthesized for siRNA delivery, and its properties were characterized with methods including Fourier transform infrared spectrometry, transmission electron microscopy, scanning electron microscopy, gel retardation assay, differential scanning calorimetry, confocal microscopy, releasing test, real-time polymerase chain reaction (PCR) assay, enzyme-linked immunosorbent assay (ELISA), flow cytometry, cytotoxicity assay, and gene-silencing efficacy assay in vitro and in vivo...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27832139/a-subpopulation-of-the-k562-cells-are-killed-by-curcumin-treatment-after-g2-m-arrest-and-mitotic-catastrophe
#13
Macario Martinez-Castillo, Raul Bonilla-Moreno, Leticia Aleman-Lazarini, Marco Antonio Meraz-Rios, Lorena Orozco, Leticia Cedillo-Barron, Emilio J Cordova, Nicolas Villegas-Sepulveda
Curcumin is extensively investigated as a good chemo-preventive agent in the development of many cancers and particularly in leukemia, including treatment of chronic myelogenous leukemia and it has been proposed as an adjuvant for leukemia therapies. Human chronic myeloid leukemia cells (K562), were treated with 20 μM of curcumin, and we found that a subpopulation of these cells were arrested and accumulate in the G2/M phase of the cell cycle. Characterization of this cell subpopulation showed that the arrested cells presented nuclear morphology changes resembling those described for mitotic catastrophe...
2016: PloS One
https://www.readbyqxmd.com/read/27827395/death-receptor-5-dr5-and-a-5-gene-apoptotic-biomarker-panel-with-significant-differential-diagnostic-potential-in-colorectal-cancer
#14
Marina Devetzi, Vivian Kosmidou, Margarita Vlassi, Iraklis Perysinakis, Chrysanthi Aggeli, Theodosia Choreftaki, Georgios N Zografos, Alexander Pintzas
High expression of Inhibitor of apoptosis proteins (IAPs) has been related to colorectal cancer (CRC) progression, resistance to treatment and poor prognosis. TRAIL (TNF-related apoptosis-inducing ligand) through its receptors DR4 (TRAIL-R1) and DR5 (TRAIL-R2) can selectively induce cancer cell apoptosis. The mRNA expression of DR4, DR5, c-IAP1, c-IAP2, XIAP and BIRC5/Survivin genes was examined in 100 paired (cancerous-normal) colorectal tissue specimens by real-time PCR, 50 of which were KRAS wild-type and 50 KRAS-mutant...
November 9, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27826624/mesenchymal-stem-cells-derived-from-normal-gingival-tissue-inhibit-the-proliferation-of-oral-cancer-cells-in-vitro-and-in-vivo
#15
Xiaoli Ji, Zhihui Zhang, Ying Han, Jiangyuan Song, Xiangliang Xu, Jianqiu Jin, Sha Su, Dongdong Mu, Xiaodan Liu, Si Xu, Hongwei Cui, Zhongfang Zhao, Yixiang Wang, Hongwei Liu
The interplay between tumor cells and mesenchymal stem cells (MSCs) within tumor microenvironment plays a significant role in tumor development, and thus might be exploited for therapeutic intervention. In this study, we isolated MSCs from normal gingival tissue (GMSCs), and detected the effect of GMSCs on oral cancer cells via direct co-culture and indirect co-culture systems. The cell proliferation assay of direct co-culture showed that GMSCs could inhibit the growth of oral cancer cells. Conditioned medium derived from GMSCs (GMSCs-CM) also exerted an anticancer effect, which indicates that soluble factors in GMSCs-CM played a dominant role in GMSCs-induced cancer cell growth inhibition...
November 2016: International Journal of Oncology
https://www.readbyqxmd.com/read/27816606/surr9c84a-protects-and-recovers-human-cardiomyocytes-from-hypoxia-induced-apoptosis
#16
Ajay Ashok, Jagat Rakesh Kanwar, Uma Maheswari Krishnan, Rupinder Kaur Kanwar
Survivin, as an anti-apoptotic protein and a cell cycle regulator, is recently gaining importance for its regenerative potential in salvaging injured hypoxic cells of vital organs such as heart. Different strategies are being employed to upregulate survivin expression in dying hypoxic cardiomyocytes. We investigated the cardioprotective potential of a cell permeable survivin mutant protein SurR9C84A, for the management of hypoxia mediated cardiomyocyte apoptosis, in a novel and clinically relevant model employing primary human cardiomyocytes (HCM)...
November 2, 2016: Experimental Cell Research
https://www.readbyqxmd.com/read/27812566/betacyanins-enhance-vitexin-2-o-xyloside-mediated-inhibition-of-proliferation-of-t24-bladder-cancer-cells
#17
E S Scarpa, M Emanuelli, A Frati, V Pozzi, E Antonini, G Diamantini, G Di Ruscio, D Sartini, T Armeni, F Palma, P Ninfali
Betacyanins (BC) were purified from beetroot (Beta vulgaris var. rubra L.) and tested, alone or in combination with vitexin-2-O-xyloside (XVX) from Beta vulgaris var. cicla L., for their ability to reduce the proliferation rate in T24 bladder cancer cells. Combination of BC and XVX exhibited a synergistic effect concerning the inhibition of proliferation in T24 cancer cells at 24 and 48 h but not after 72 h of incubation. The induction of apoptosis was evidenced by means of fluorescence activated cell sorting (FACS) analysis, as well as through the increase in caspase 3 and 8 activities...
November 4, 2016: Food & Function
https://www.readbyqxmd.com/read/27805285/survivin-inhibitor-ym155-induces-mitochondrial-dysfunction-autophagy-dna-damage-and-apoptosis-in-bcl-xl-silenced-glioma-cell-lines
#18
Esther P Jane, Daniel R Premkumar, Philip A Sutera, Jonathon M Cavaleri, Ian F Pollack
Because the anti-apoptotic protein Bcl-xL is overexpressed in glioma, one might expect that inhibiting or silencing this gene would promote tumor cell killing. However, our studies have shown that this approach has limited independent activity, but may tip the balance in favor of apoptosis induction in response to other therapeutic interventions. To address this issue, we performed a pharmacological screen using a panel of signaling inhibitors and chemotherapeutic agents in Bcl-xL silenced cells. Although limited apoptosis induction was observed with a series of inhibitors for receptor tyrosine kinases, PKC inhibitors, Src family members, JAK/STAT, histone deacetylase, the PI3K/Akt/mTOR pathway, MAP kinase, CDK, heat shock proteins, proteasomal processing, and various conventional chemotherapeutic agents, we observed a dramatic potentiation of apoptosis in Bcl-xL silenced cells with the survivin inhibitor, YM155...
November 2, 2016: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/27803511/survivin-as-a-novel-biomarker-in-the-pathogenesis-of-acne-vulgaris-and-its-correlation-to-insulin-like-growth-factor-i
#19
Hanan A Assaf, Wafaa M Abdel-Maged, Bakheet E M Elsadek, Mohammed H Hassan, Mohamed A Adly, Soher A Ali
Survivin, a member of the inhibitor of apoptosis protein family, has an important role in cell cycle regulation. Insulin-like growth factor-I (IGF-I) is a polypeptide hormone with wide range of biologic effects including stimulation of lipogenesis in sebaceous glands. Their overexpression in some fibrotic disorders suggests a possible implication of both IGF-I and survivin in the pathogenesis of acne and/or acne scars. The current study aimed to assess and correlate serum levels of IGF-I and survivin in patients with active acne vulgaris and postinflammatory acne scars and to evaluate their lesional expressions in comparison to healthy controls...
2016: Disease Markers
https://www.readbyqxmd.com/read/27799034/multifunctional-superparamagnetic-nanoparticles-from-synthesis-to-sirna-delivery
#20
Sanam Arami, Majid Mahdavi, Mohammad Reza Rashidi, Marziyeh Fathi, Mohammad Saeid Hejazi, Nasser Samadi
Targeted delivery of small interfering RNA (siRNA) to specific tumor tissues and cells remains as one of the key challenges in the development of RNA interference as a therapeutic application. To target breast cancer, we developed a cationic nanoparticle as a therapeutic delivery system. The successful synthesis of the magnetic nanoparticles modified by polyaspartate (PAA) and polyethyleneimine (PEI) was confirmed using fourier transform infrared (FT-IR) measurements. The designed nanoparticle has been characterized evaluating its size and charge before and after nanoplex formation with siRNA...
October 31, 2016: Current Pharmaceutical Design
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