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https://www.readbyqxmd.com/read/29332262/tumor-expression-of-survivin-p53-cyclin-d1-osteopontin-and-fibronectin-in-predicting-the-response-to-neo-adjuvant-chemotherapy-in-children-with-advanced-malignant-peripheral-nerve-sheath-tumor
#1
Gabrielle Karpinsky, Malgorzata A Krawczyk, Ewa Izycka-Swieszewska, Aleksandra Fatyga, Agnieszka Budka, Walentyna Balwierz, Grazyna Sobol, Beata Zalewska-Szewczyk, Magdalena Rychlowska-Pruszynska, Teresa Klepacka, Bozenna Dembowska-Baginska, Bernarda Kazanowska, Anna Gabrych, Ewa Bien
PURPOSE: Selected cell-cycle regulators and extracellular matrix proteins were found to play roles in malignant peripheral nerve sheath tumor (MPNST) biology. We aimed to analyze whether initial tumor tissue expressions of survivin, p53, cyclin D1, osteopontin (OPN) and fibronectin (FN) correlate with the response to neo-adjuvant CHT (naCHT) in children with advanced inoperable MPNST. METHODS: The study included 26 children with MPNST (M/F 14/12, median age 130 months) treated in Polish centers of pediatric oncology between 1992 and 2013...
January 13, 2018: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/29331104/inhibition-of-mircorna-34a-enhances-survival-of-human-bone-marrow-mesenchymal-stromal-stem-cells-under-oxidative-stress
#2
Yang Liu, Xiaohu Zhang, Jie Chen, Tingyu Li
BACKGROUND Mesenchymal stromal/stem cells (MSCs) are broadly used for many diseases, but the efficacy of MSC engraftment is very low due to low viability and high cell death rate under a stressful microenvironment. The present study aimed to investigate whether microRNA-34a (miR-34a), which is a downstream target of P53, is involved in H2O2-induced MSC cell death. MATERIAL AND METHODS Human bone marrow MSCs (hMSCs) were purchased from Lonza and were cultured as previously described. hMSCs were transfected with miR-34a inhibitor and exposed to H2O2...
January 13, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29328459/%C3%AE-solanine-enhances-the-chemosensitivity-of-esophageal-cancer-cells-by-inducing-microrna%C3%A2-138-expression
#3
Jianbo Wu, Li Wang, Xinhui Du, Qianqian Sun, Yuanyuan Wang, Min Li, Wenqiao Zang, Kangdong Liu, Guoqiang Zhao
Esophageal cancer is a common malignant tumor worldwide. Inherent and acquired drug resistance are the major challenges faced in anticancer chemotherapy. This study aimed to explore the effects of α-solanine in regards to the chemosensitivity of esophageal cancer cells. We found that α-solanine enhanced the sensitivity of EC9706 and KYSE30 cells to 5-flurouracil (5-FU) and cisplatin (Cis) by promoting drug-induced apoptosis. qRT-PCR and western blotting results showed that α-solanine treatment promoted miR-138 expression and decreased survivin expression in EC9706 and KYSE30 cells...
January 4, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29328427/mir-133b-reverses-cisplatin-resistance-by-targeting-gstp1-in-cisplatin-resistant-lung-cancer-cells
#4
Chen Lin, Liyi Xie, Yan Lu, Zhihuang Hu, Jianhua Chang
MicroRNAs play a critical role in chemoresistance and are implicated in various biological and pathological processes of cells. The objective of the present study was to explore the role of miR‑133b and its mechanism in the regulation of cisplatin resistance and tumor progression in cisplatin‑resistant non‑small cell lung cancer (NSCLC) cells. Reverse transcription‑quantitative polymerase chain reaction and western blot assays of the cisplatin‑resistant cell lines A549/DPP and H1299/DDP displayed the reduced expression of miR‑133b and increased expression of glutathione-S-transferase P1 (GSTP1) in the resistant cells compared with the respective parental cell lines A549 and H1299...
January 11, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29328387/rhus-verniciflua-stokes-extract-induces-inhibition-of-cell-growth-and-apoptosis-in-human-chronic-myelogenous-leukemia-k562-cells
#5
Kyung-Wook Lee, Eun-Sik Um, Bo-Bae Jung, Eun-Sol Choi, Eun-Young Kim, Seungbo Lee, Eungyeong Jang, Jang-Hoon Lee, Youngchul Kim
Rhus verniciflua Stokes has been widely used as a traditional medicinal plant with a variety of pharmacological activities. We investigated the mechanisms involved in mediating the effects of Rhus verniciflua Strokes (R. verniciflua) extract in human chronic myelogenous leukemia K562 cells, including caspase-dependent apoptotic pathways related to cell-cycle arrest, as well as the inhibition of nuclear factor NF-κB activation and upregulation of the mitogen-activated protein kinase (MAPK) signaling pathway...
January 3, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29328367/tumorigenic-proteins-upregulated-in-the-mycn-amplified-imr-32-human-neuroblastoma-cells-promote-proliferation-and-migration
#6
Hayat Zaatiti, Jad Abdallah, Zeina Nasr, George Khazen, Anthony Sandler, Tamara J Abou-Antoun
Childhood neuroblastoma is one of the most common types of extra-cranial cancer affecting children with a clinical spectrum ranging from spontaneous regression to malignant and fatal progression. In order to improve the clinical outcomes of children with high-risk neuroblastoma, it is crucial to understand the tumorigenic mechanisms that govern its malignant behaviors. MYCN proto-oncogene, bHLH transcription factor (MYCN) amplification has been implicated in the malignant, treatment-evasive nature of aggressive, high-risk neuroblastoma...
January 4, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29324722/evaluation-of-a-new-survivin-elisa-and-ubc%C3%A2-rapid-for-the-detection-of-bladder-cancer-in-urine
#7
Jan Gleichenhagen, Christian Arndt, Swaantje Casjens, Carmen Meinig, Holger Gerullis, Irina Raiko, Thomas Brüning, Thorsten Ecke, Georg Johnen
Urine-based biomarkers for non-invasive diagnosis of bladder cancer are urgently needed. No single marker with sufficient sensitivity and specificity has been described so far. Thus, a combination of markers appears to be a promising approach. The aim of this case-control study was to evaluate the performance of an in-house developed enzyme-linked immunosorbent assay (ELISA) for survivin, the UBC®Rapid test, and the combination of both assays. A total of 290 patients were recruited. Due to prior bladder cancer, 46 patients were excluded...
January 11, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29318497/epigenetic-mechanism-of-survivin-dysregulation-in-human-cancer
#8
REVIEW
Hui Lyu, Jingcao Huang, Zhimin He, Bolin Liu
Survivin (coding gene BIRC5) is a dual functional protein acting as a critical inhibitor of apoptosis (IAP) and key regulator of cell cycle progression. It is usually produced in embryonic tissues during development and undetectable in most adult tissues. Overexpression of Survivin frequently occurs in various human cancers and increased Survivin correlates with poor clinic outcome, tumor recurrence, and therapeutic resistance. Because of its selective expression in tumor, but not normal tissues, Survivin has been recognized as an attractive target for cancer treatment...
January 4, 2018: Science China. Life Sciences
https://www.readbyqxmd.com/read/29312577/nitric-oxide-is-cytoprotective-to-breast-cancer-spheroids-vulnerable-to-estrogen-induced-apoptosis
#9
Yana Shafran, Naomi Zurgil, Orit Ravid-Hermesh, Maria Sobolev, Elena Afrimzon, Yaron Hakuk, Asher Shainberg, Mordechai Deutsch
Estrogen-induced apoptosis has become a successful treatment for postmenopausal metastatic, estrogen receptor-positive breast cancer. Nitric oxide involvement in the response to this endocrine treatment and its influence upon estrogen receptor-positive breast cancer progression is still unclear. Nitric oxide impact on the MCF7 breast cancer line, before and after estrogen-induced apoptosis, was investigated in 3D culture systems using unique live-cell imaging methodologies. Spheroids were established from MCF7 cells vulnerable to estrogen-induced apoptosis, before and after exposure to estrogen...
December 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29312470/combined-inhibition-of-bet-proteins-and-class-i-hdacs-synergistically-induces-apoptosis-in-urothelial-carcinoma-cell-lines
#10
Alexander S Hölscher, Wolfgang A Schulz, Maria Pinkerneil, Günter Niegisch, Michèle J Hoffmann
Background: New efficient therapies for urothelial carcinoma (UC) are urgently required. Small-molecule drugs targeting chromatin regulators are reasonable candidates because these regulators are frequently mutated or deregulated in UC. Indeed, in previous work, Romidepsin, which targets class I histone deacetylases (HDAC), efficiently killed UC cells, but did not elicit canonical apoptosis and affected benign urothelial cells indiscriminately. Combinations of HDAC inhibitors with JQ1, an inhibitor of bromodomain-containing acetylation reader proteins like BRD4, which promote especially the transcription of pro-tumorigenic genes, have shown efficacy in several tumor types...
2018: Clinical Epigenetics
https://www.readbyqxmd.com/read/29311669/adipocyte-activated-oxidative-and-er-stress-pathways-promote-tumor-survival-in-bone-via-upregulation-of-heme-oxygenase-1-and-survivin
#11
Mackenzie K Herroon, Erandi Rajagurubandara, Jonathan D Diedrich, Elisabeth I Heath, Izabela Podgorski
Metastatic tumor cells engage the local tumor microenvironment and activate specific pro-survival mechanisms to thrive and progress in the harsh bone marrow niche. Here we show that the major contributors to the survival of carcinoma cells that have colonized the bone marrow are the adipocyte-induced oxidative stress and ER stress pathways. We demonstrate that upon exposure to adipocyte-rich environments in vitro or in vivo, bone-trophic prostate and breast tumor cells upregulate the oxidative stress enzyme, HO-1...
January 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29311118/therapeutic-challenge-with-a-cdk-4-6-inhibitor-induces-an-rb-dependent-smac-mediated-apoptotic-response-in-non-small-cell-lung-cancer
#12
Chellappagounder Thangavel, Ettickan Boopathi, Yi Liu, Christopher McNair, Alex Haber, Maryna Perepelyuk, Anshul Bhardwaj, Sankar Addya, Adam Ertel, Sunday Shoyele, Ruth Birbe, Joseph M Salvino, Adam P Dicker, Karen E Knudsen, Robert B Den
The retinoblastoma tumor suppressor (RB), a key regulator of cell cycle progression and proliferation, is functionally suppressed in up to 50% of non-small cell lung cancer (NSCLC).  RB function is exquisitely controlled by a series of proteins including the CyclinD-CDK4/6 complex. In the current study, we interrogated the capacity of a CDK4/6 inhibitor, palbociclib, to activate RB function.   Experimental Design and Results: We employed multiple isogenic RB proficient and deficient NSCLC lines to interrogate the cytostatic and cytotoxic capacity of CDK 4/6 inhibition in vitro and in vivo  We demonstrate that while short term exposure to palbociclib induces cellular senescence, prolonged exposure results in inhibition of tumor growth...
January 8, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29309895/reactive-oxygen-species-released-from-astrocytes-treated-with-amyloid-beta-oligomers-elicit-neuronal-calcium-signals-that-decrease-phospho-ser727-stat3-nuclear-content
#13
Yorka Muñoz, Andrea C Paula-Lima, Marco T Núñez
The transcription factor STAT3 has a crucial role in the development and maintenance of the nervous system. In this work, we treated astrocytes with oligomers of the amyloid beta peptide (AβOs), which display potent synaptotoxic activity, and studied the effects of mediators released by AβOs-treated astrocytes on the nuclear location of neuronal serine-727-phosphorylated STAT3 (pSerSTAT3). Treatment of mixed neuron-astrocyte cultures with 0.5µMAβOs induced in neurons a significant decrease of nuclear pSerSTAT3, but not of phosphotyrosine-705 STAT3, the other form of STAT3 phosphorylation...
January 5, 2018: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29305864/fenofibrate-inhibits-mtor-p70s6k-signaling-and-simultaneously-induces-cell-death-in-human-prostate-cancer-cells
#14
Xin Lian, Junlian Gu, Baoshan Gao, Yan Li, Chendil Damodaran, Wei Wei, Yaowen Fu, Lu Cai
Fenofibrate is the most widely used lipid-lowering drug, but it seems to have anti-tumor effects in several tumor cell lines. However, there are only a few reports on its effects on human prostate cancer cells. Thus, we investigated the anti-proliferative effects of fenofibrate on human prostate cancer cells and potential mechanisms. The methods used include cell viability analysis with an MTT assay, as well as apoptosis and related signaling pathway analyses with flow cytometry and Western blotting. Fenofibrate inhibited PC-3 cell growth in dose- and time-dependent manners...
January 3, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29305260/irigenin-sensitizes-trail-induced-apoptosis-via-enhancing-pro-apoptotic-molecules-in-gastric-cancer-cells
#15
Ying Xu, Cheng-Cheng Gao, Zhen-Guo Pan, Chuan-Wen Zhou
Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) holds promising value for cancer therapy due to its capacity to induce apoptosis in cancer cells. Nevertheless, TRAIL therapy is greatly hampered by its resistance. Irigenin (Iri), isoflavonoids, can be isolated from the rhizome of Belamcanda chinensis, and has been shown anti-cancer properties. In this study, we explored if Iri could enhance TRAIL-regulated apoptosis in TRAIL resistant gastric cancer cells. Iri significantly potentiated TRAIL-triggered cytotoxicity...
January 2, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29304559/synthesis-and-antitumor-activity-evaluation-of-asiatic-acid-derivatives-as-survivin-inhibitor
#16
Yan-Qiu Meng, Hua-Bo Cui, Lei Li, Wei-Chen Zhang, Hong-Shuang Pan, Ting-Ting Yu, Wei Li
A series of asiatic acid derivatives were synthesized and their cytotoxicities in vitro against two cancer cell lines (HepG2 and SGC7901) were evaluated by MTT assay. The results showed that compounds I2, I6, and II6 have more potent anticancer activity than that of the positive control drug paclitaxel. The interactions between the compounds I2, I6, and II6 and survivin were also studied by docking simulations.
January 5, 2018: Journal of Asian Natural Products Research
https://www.readbyqxmd.com/read/29298329/molecular-and-functional-analysis-of-anchorage-independent-treatment-evasive-neuroblastoma-tumorspheres-with-enhanced-malignant-properties-a-possible-explanation-for-radio-therapy-resistance
#17
Tamara J Abou-Antoun, Javad Nazarian, Anthony Ghanem, Stanislav Vukmanovic, Anthony D Sandler
Despite significant advances in cancer treatment and management, more than 60% of patients with neuroblastoma present with very poor prognosis in the form of metastatic and aggressive disease. Solid tumors including neuroblastoma are thought to be heterogeneous with a sub-population of stem-like cells that are treatment-evasive with highly malignant characteristics. We previously identified a phenomenon of reversible adaptive plasticity (RAP) between anchorage dependent (AD) cells and anchorage independent (AI) tumorspheres in neuroblastoma cell cultures...
2018: PloS One
https://www.readbyqxmd.com/read/29290980/up-regulation-of-5-lipoxygenase-by-inhibition-of-cathepsin-g-enhances-trail-induced-apoptosis-through-down-regulation-of-survivin
#18
Seon Min Woo, Kyoung-Jin Min, Seung Un Seo, Shin Kim, Jong-Wook Park, Dae Kyu Song, Hyun-Shik Lee, Sang Hyun Kim, Taeg Kyu Kwon
Cathepsin G is a serine protease secreted from activated neutrophils, it has important roles in inflammation and immune response. Moreover, cathepsin G promotes tumor cell-cell adhesion and migration in cancer cells. In this study, we investigated whether inhibition of cathepsin G could sensitize TRAIL-mediated apoptosis in cancer cells. An inhibitor of cathepsin G [Cathepsin G inhibitor I (Cat GI); CAS 429676-93-7] markedly induced TRAIL-mediated apoptosis in human renal carcinoma (Caki, ACHN, and A498), lung cancer (A549) and cervical cancer (Hela) cells...
December 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/29290971/tab3-upregulates-survivin-expression-to-promote-colorectal-cancer-invasion-and-metastasis-by-binding-to-the-tak1-traf6-complex
#19
Chen Luo, Rongfa Yuan, Leifeng Chen, Wei Zhou, Wei Shen, Yumin Qiu, Jun Shao, Jinlong Yan, Jianghua Shao
Transforming growth factor-β-activated kinase 1 (TAK1)-binding protein 3 (TAB3) is involved in cancer proliferation and metastasis, but its role in colorectal cancer remains unclear. In this study, we demonstrated that TAB3 is upregulated in colorectal cancer tissues and that high TAB3 levels correlated with tumor metastasis and a poor prognosis in colorectal cancer. In addition, TAB3 knockdown decreased Survivin expression and suppressed colorectal cancer cell migration and invasion in vitro, and reduced liver metastasis in vivo...
December 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/29290032/foxm1-promotes-pulmonary-artery-smooth-muscle-cell-expansion-in-pulmonary-arterial-hypertension
#20
Alice Bourgeois, Caroline Lambert, Karima Habbout, Benoit Ranchoux, Stéphanie Paquet-Marceau, Isabelle Trinh, Sandra Breuils-Bonnet, Renée Paradis, Valérie Nadeau, Roxane Paulin, Steeve Provencher, Sébastien Bonnet, Olivier Boucherat
Pulmonary arterial hypertension (PAH) is a progressive vascular remodeling disease characterized by a persistent elevation of pulmonary artery pressure, leading to right heart failure and premature death. Exaggerated proliferation and resistance to apoptosis of pulmonary artery smooth muscle cells (PASMCs) is a key component of vascular remodeling. Despite major advances in the field, current therapies for PAH remain poorly effective in reversing the disease or significantly improving long-term survival. Because the transcription factor FOXM1 is necessary for PASMC proliferation during lung morphogenesis and its overexpression stimulates proliferation and evasion of apoptosis in cancer cells, we thus hypothesized that upregulation of FOXM1 in PAH-PASMCs promotes cell expansion and vascular remodeling...
December 30, 2017: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
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