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Apoptosis survivin

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https://www.readbyqxmd.com/read/28901517/cx32-inhibits-tnf%C3%AE-induced-extrinsic-apoptosis-with-and-without-egfr-suppression
#1
Yongchang Lai, Liang Tao, Yifan Zhao, Xiaomin Zhang, Xingjuan Sun, Qin Wang, Chengfang Xu
Tumor necrosis factor α (TNFα) and TNF-related apoptosis-inducing ligand (TRAIL) can trigger the extrinsic apoptosis pathway. Our previous study indicated that connexin32 (Cx32) inhibited streptonigrin-induced intrinsic apoptosis via the epidermal growth factor receptor (EGFR) pathway. However, whether Cx32 can exert effects on the extrinsic apoptosis pathway through EGFR signaling remains unclear. In the present study, we investigated the role of Cx32 in extrinsic apoptosis induced by treatment with TNFα + cycloheximide (CHX) or afatinib in human cervical cancer (CaCx) cells...
September 7, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28901509/ct45a1-sirna-silencing-suppresses-the-proliferation-metastasis-and-invasion-of-lung-cancer-cells-by-downregulating-the-erk-creb-signaling-pathway
#2
Feng Tang, Shengjun Tang, Xiaolong Guo, Chao Yang, Ke Jia
The aim of the present study was to investigate the role of the cancer‑testis antigen family 45 member A1 (CT45A1) in the proliferation, apoptosis, invasion and metastasis of lung cancer cells, and the associated molecular mechanisms. Western blotting determined that the expression of CT45A1 in normal lung cells was far lower than that observed in lung cancer cells. Following the transfection of CT45A1 small (or short) interfering (si)RNA and its negative control into A549 cells using Lipofectamine 2000, the CT45A1 protein and mRNA levels were determined further by western blotting and reverse transcription‑polymerase chain reaction...
September 12, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28901499/transfection-with-livin-and-survivin-shrna-inhibits-the-growth-and-proliferation-of-non%C3%A2-small-cell-lung-cancer-cells
#3
Qinmiao Huang, Yiming Zeng, Huihuang Lin, Huaping Zhang, Dongyong Yang
Lung cancer is reported to be a major public health issue worldwide and the overall prognosis of patients remains poor. The expression levels of Livin and Survivin, of the inhibitors of apoptosis (IAP) family, are associated with prognostic significance in the majority of solid tumors. Therefore, in the presents study, short hairpin (sh)RNA expression vectors inhibiting the Livin and Survivin genes were constructed to examine the effects of the transfection of Livin shRNA and/or Survivin shRNA on the biological functions of tumor cells...
September 13, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28900506/combination-of-aav-trail-with-mir-221-zip-therapeutic-strategy-overcomes-the-resistance-to-trail-induced-apoptosis-in-liver-cancer
#4
Sisi Ma, Jiazeng Sun, Yabin Guo, Peng Zhang, Yanxin Liu, Dexian Zheng, Juan Shi
TNF-related apoptosis-inducing ligand (TRAIL) possesses the capacity to induce apoptosis in a wide variety of tumor cells without affecting most normal cells. However, it has now emerged that many primary cancer cells are resistant to TRAIL monotherapy. Overcoming the intrinsic or acquired TRAIL resistance is desirable for TRAIL-mediated cancer therapy. In this study, we found that the miR-221/222 cluster was up-regulated in TRAIL-resistant liver cancer cells. Specific inhibitors of miR-221 and/or miR-222, called sponge, TuD and miR-Zip were constructed, and their ability to overcome TRAIL resistance was compared...
2017: Theranostics
https://www.readbyqxmd.com/read/28900184/survivin-and-xiap-two-potential-biological-targets-in-follicular-thyroid-carcinoma
#5
Thomas A Werner, Levent Dizdar, Inga Nolten, Jasmin C Riemer, Sabrina Mersch, Sina C Schütte, Christiane Driemel, Pablo E Verde, Katharina Raba, Stefan A Topp, Matthias Schott, Wolfram T Knoefel, Andreas Krieg
Follicular thyroid carcinoma's (FTC) overall good prognosis deteriorates if the tumour fails to retain radioactive iodine. Therefore, new druggable targets are in high demand for this subset of patients. Here, we investigated the prognostic and biological role of survivin and XIAP in FTC. Survivin and XIAP expression was investigated in 44 FTC and corresponding non-neoplastic thyroid specimens using tissue microarrays. Inhibition of both inhibitor of apoptosis proteins (IAP) was induced by shRNAs or specific small molecule antagonists and functional changes were investigated in vitro and in vivo...
September 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28894378/initial-experience-of-correlating-diffusion-spectral-parameters-with-histopathologic-indexes-in-murine-colorectal-tumor-homografts
#6
Xiao-Yan Zhang, Xiao-Ting Li, Jia Sun, Ying-Shi Sun
PURPOSE: To determine the correlation between continuously distributed diffusion-weighted image (DWI)-derived parameters and histopathologic indexes. METHODS: Fifty-four mice bearing HCT-116 colorectal tumors were included for analysis; 12 mice were used for continuous observation, and the other 42 mice were used for break-point observation. All mice were randomly divided into radiotherapy and non-radiotherapy groups. Optical imaging and MRI were performed at different time points according to radiotherapy regimen (baseline, 24 h, 48 h, 72 h, 7 d, 14 d, and 28 d)...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28892098/correlation-between-e-cadherin-interactions-survivin-expression-and-apoptosis-in-mdck-and-ts-src-mdck-cell-culture-models
#7
Janne Capra, Sinikka Eskelinen
Survivin, a member of inhibitor of apoptosis (IAP) protein family, is a multifunctional protein expressed in most cancers. In addition to inhibition of apoptosis, it regulates proliferation and promotes migration. Its presence and function in cells is strongly regulated via transcription factors, intracellular localization, and degradation. We analyzed the presence of survivin at protein level in various culture environments and under activation of Src tyrosine kinase in epithelial canine kidney MDCK cells in order to elucidate factors controlling survivin 'lifespan'...
September 11, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28887754/lichen-derived-caperatic-acid-and-physodic-acid-inhibit-wnt-signaling-in-colorectal-cancer-cells
#8
Jarosław Paluszczak, Robert Kleszcz, Elżbieta Studzińska-Sroka, Violetta Krajka-Kuźniak
Lichens are a source of secondary metabolites which possess important biological activities, including antioxidant, antibacterial, anti-inflammatory, and cytotoxic effects. The anticancer activity of lichens was shown in many types of tumors, including colorectal cancers (CRC). Several studies revealed that the application of lichen extracts diminished the proliferation of CRC cells and induced apoptosis. Colon carcinogenesis is associated with aberrations in Wnt signaling. Elevated transcriptional activity of β-catenin induces cell survival, proliferation, and migration...
September 8, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28886972/benzene-metabolite-hydroquinone-induces-apoptosis-of-bone-marrow-mononuclear-cells-through-inhibition-of-%C3%AE-catenin-signaling
#9
Jiaqi Li, Songfu Jiang, Yi Chen, Ruye Ma, Jingjing Chen, Shanhu Qian, Yifen Shi, Yixiang Han, Shenghui Zhang, Kang Yu
The Akt/glycogen synthase kinase-3β (GSK-3β)/β-catenin signaling pathway has been shown to play an important role in hematopoiesis, and hematopoietic cells are sensitive targets for benzene-induced hematotoxicity. We therefore hypothesized that dysregulation of the Akt/GSK-3β/β-catenin signaling was associated with benzene-induced hematotoxicity. Here, we showed that hydroquinone (HQ), a major metabolite of benzene in humans, significantly inhibited cell viability and colony formation while inducing apoptosis of human bone marrow mononuclear cells in vitro...
September 5, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28883406/mir-338-5p-enhances-the-radiosensitivity-of-esophageal-squamous-cell-carcinoma-by-inducing-apoptosis-through-targeting-survivin
#10
Misun Park, Hyeon-Joon Yoon, Moon Chul Kang, Junhye Kwon, Hae Won Lee
Radioresistance is a challenge in the treatment of esophageal squamous cell carcinoma (ESCC). MicroRNAs (miRNAs) are known to play an important role in the functional modification of cancer cells and recent studies have reported miRNA-mediated radiotherapy resistance. However, further research is necessary to reveal the regulation mechanisms, and treatment strategies using miRNA are yet to be established for ESCC. We compared the miRNA expression profiles of ESCC parental (TE-4) and acquired radioresistance (TE-4R) cell lines using a miRNA microarray and qRT-PCR...
September 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28881589/decreased-calpain-activity-in-chronic-myeloid-leukemia-impairs-apoptosis-by-increasing-survivin-in-myeloid-progenitors-and-xiap1-in-differentiating-granulocytes
#11
Weiqi Huang, Ling Bei, Elizabeth E Hjort, Elizabeth A Eklund
Chronic Myeloid Leukemia (CML) is characterized by translocations between chromosomes 9 and 22, resulting in expression of Bcr-abl oncogenes. Although the clinical course of CML was revolutionized by development of Bcr-abl-directed tyrosine kinase inhibitors (TKIs), CML is not cured by these agents. Specifically, the majority of subjects relapsed in clinical trials attempting TKI discontinuation, suggesting persistence of leukemia stem cells (LSCs) even in molecular remission. Identifying mechanisms of CML-LSC persistence may suggest rationale therapeutic targets to augment TKI efficacy and lead to cure...
August 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/28875330/liposomes-co-loaded-with-6-phosphofructo-2-kinase-fructose-2-6-biphosphatase-3-pfkfb3-shrna-plasmid-and-docetaxel-for-the-treatment-of-non-small-cell-lung-cancer
#12
Nusrat Chowdhury, Imran Vhora, Ketan Patel, Ravi Doddapaneni, Arindam Mondal, Mandip Singh
PURPOSE: Non-small cell lung cancer is the leading cause of cancer related deaths globally. Considering the side effects and diminishing chemosensitivity to chemotherapy, novel treatment approaches are sought. Hence, we aim to develop a liposomal co-delivery system of pDNA expressing shRNA against PFKFB3 (pshPFKFB3) and docetaxel (DTX). METHODS: Cationic DTX liposomes complexed with pshPFKFB3 (PSH-DL) were developed. In vitro cell line studies were performed to evaluate transfection, PFKFB3 mRNA silencing, cytotoxicity, pGP inhibition, and protein markers expression...
September 5, 2017: Pharmaceutical Research
https://www.readbyqxmd.com/read/28873083/sklb188-inhibits-the-growth-of-head-and-neck-squamous-cell-carcinoma-by-suppressing-egfr-signalling
#13
Mansoureh Barzegar, Shuang Ma, Chao Zhang, Xin Chen, Ying Gu, Chaowei Shang, Xiaojuan Jiang, Jiao Yang, Cherie-Ann Nathan, Shengyong Yang, Shile Huang
BACKGROUND: Overexpression of epidermal growth factor receptor (EGFR) occurs in approximately 90% of head and neck squamous cell carcinoma (HNSCC), and is correlated with poor prognosis. Thus, targeting EGFR is a promising strategy for treatment of HNSCC. Several small molecule EGFR inhibitors have been tested in clinical trials for treatment of HNSCC, but none of them are more effective than the current chemotherapeutic drugs. Thus, it is urgently needed to develop novel EGFR inhibitors for HNSCC treatment...
September 5, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28870346/effect-of-taoren-quyu-decoction-on-human-endometrial-cells-and-its-anti-endometriosis-activity-in-rats
#14
Hai-Zhi Liu, Xiao-Xue Han, Jia Liu, Feng-Cheng Zhu, Rui-Man Li
OBJECTIVE: To study the effect of Taoren Quyu Decoction (TQD) on endometrial cells in patients with endometriosis (EMs) and EMs in rats. METHODS: A total of 60 female Wistar rats were randomly divided into 4 groups, namely, normal group, model group, positive group and TQD group, each group having 15 rats. Except the normal group, EMs model was established in the other three groups by transplanting the rat autologous endometrium. After 4 weeks of intragastric administration, blood, eutopic and ectopic endometrial tissues of rats in each group were collected to detect the serum levels of estrogen (E2), cancer antigen 125 (CA125), endometrial antibody (EMAb), and expressions of microvessel density (MVD), vascular endothelial growth factor (VEGF) and angiopoietin (Ang-2)...
July 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28865358/fabrication-of-all-trans-retinoic-acid-loaded-biocompatible-precirol-a-strategy-for-escaping-dose-dependent-side-effects-of-doxorubicin
#15
Mehdi Sabzichi, Jamal Mohammadian, Marjan Ghorbani, Somaiyeh Saghaei, Hadi Chavoshi, Fatemeh Ramezani, Hamed Hamishehkar
BACKGROUND: Drug delivery-based nanoparticles have been emerged to be an alternative and efficient approach to cancer therapy compared to conventional systems. Here, we investigated the role of all-trans retinoic acid (ATRA) formulated with precirol in increasing doxorubicin (Dox) induced apoptosis and cell cycle arrest in MDA-MB-231 breast cancer cells. METHODS: ATRA-loaded Nano structured lipid carriers (NLCs) were evaluated in terms of particle size, zeta potential, Fourier transforms infrared spectroscopy (FTIR), cell internalization, and scanning electron microscope (SEM)...
August 25, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28858737/ginkgo-biloba-l-leaf-extract-offers-multiple-mechanisms-in-bridling-n-methylnitrosourea-mediated-experimental-colorectal-cancer
#16
Hanaa H Ahmed, Hanan S El-Abhar, Elsayed Abdul Khalik Hassanin, Noha F Abdelkader, Mohamed B Shalaby
In Egypt, colorectal cancer (CRC) is the 6th cancer in both gender and CRC rates are high in subjects under 40 years of age. This study goaled to determine the development of CRC using relevant biochemical markers and to elucidate the potent mechanism of Ginkgo biloba L. leaf extract in retrogression of experimental CRC. Adult male Sprague-Dawley rats were administered N-methylnitrosourea (N-MNU; 2mg in 0.5ml water/rat) intrarectally thrice a week for five weeks to induce CRC, followed by treatment with either 5-fluorouracil (5-FU; 12...
August 28, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28858735/linarin-suppresses-glioma-through-inhibition-of-nf-%C3%AE%C2%BAb-p65-and-up-regulating-p53-expression-in-vitro-and-in-vivo
#17
Zi-Gang Zhen, Shao-Hua Ren, Hong-Ming Ji, Jiu-Hong Ma, Xin-Min Ding, Fu-Qiang Feng, Shing-Li Chen, Peng Zou, Jin-Rui Ren, Lu Jia
Glioma is the most common form of malignant brain cancer with high mortality rate in human. Therefore, finding effective therapeutic strategy and revealing the underlying molecular mechanism is necessary. Plant-extracted flavonoid glycosides have been suggested to be bioactive compounds with pleiotropic functions, such as anti-cancer, anti-inflammatory, antioxidant and effects. Our study was attempted to explore the anti-cancer role of linarin (acacetin-7-O-β-d-rutinoside) in glioma in vitro and in vivo. Nuclear factor kappa-B (NF-κB) activity is a common phenomenon in various cancers, resulting in abnormal cell proliferation, malignant transformation, or resistance to cell death...
August 28, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28833597/artepillin-c-as-a-targeting-survivin-molecule-in-oral-squamous-cell-carcinoma-cells-in-vitro-a-preliminary-study
#18
Seokjoon Pang, Michael Yee, Yasmin Saba, Takahiro Chino
BACKGROUND: Survivin, a member of the inhibitor of apoptosis family, is overexpressed in most human tumors, but undetectable in normal adult tissues. It is a promising target molecule in cancer treatment, since interference in its function promotes apoptosis. Artepillin C, a major, biologically active ingredient of Brazilian propolis, possesses anticancer activity against several cancer cells with different tissue origins. However, little is known about its bioactivity on oral squamous cell carcinoma cells or its effect on survivin expression...
August 20, 2017: Journal of Oral Pathology & Medicine
https://www.readbyqxmd.com/read/28829489/down-regulation-of-survivin-enhances-paclitaxel-induced-hela-cell-apoptosis
#19
F Gu, L Li, Q-F Yuan, C Li, Z-H Li
OBJECTIVE: Paclitaxel is one of the common anticancer drugs in the treatment of cervical cancer, while the mechanism of restraining and killing cancer cells is still unclear. This study aimed to investigate the molecular mechanism of paclitaxel in regulating proliferation and apoptosis of cervical cancer Hela cells. MATERIALS AND METHODS: Paclitaxel at 2 μmol/L was used to treat Hela cells for 48 h. MTT assay and flow cytometry were applied to test Hela cells proliferation and apoptosis respectively...
August 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28821555/p53-non-genotoxic-activation-and-mtorc1-inhibition-lead-to-effective-combination-for-neuroblastoma-therapy
#20
Myrthala Moreno-Smith, Anna Lakoma, Zaowen Chen, Ling Tao, Kathleen A Scorsone, Linda Schild, Kevin Aviles-Padilla, Rana Nikzad, Yankai Zhang, Rikhia Chakraborty, Jan J Molenaar, Sanjeev Vasudevan, Vivien Sheehan, Eugene S Kim, Silke Paust, Jason M Shohet, Eveline Barbieri
mTORC1 inhibitors are promising agents for neuroblastoma therapy, however they have shown limited clinical activity as monotherapy, thus rational drug combinations need to be explored to improve efficacy. Importantly, neuroblastoma maintains both an active p53 and an aberrant mTOR signaling. <br /><br />Experimental Design: Using an orthotopic xenograft model and modulating p53 levels, we investigated the anti-tumor effects of the mTORC1 inhibitor temsirolimus in neuroblastoma expressing normal, decreased, or mutant p53, both as single agent and in combination with first and second generation MDM2 inhibitors to reactivate p53...
August 18, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
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