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https://www.readbyqxmd.com/read/28549350/an-anti-cancer-wxxxe-containing-azurin-polypeptide-inhibits-rac1-dependent-stat3-and-erk-gsk-3%C3%AE-signaling-in-breast-cancer-cells
#1
Zhe Zhang, Zhiyong Luo, Wenpu Min, Lin Zhang, Yaqun Wu, Xiaopeng Hu
In our previous study, we characterized a mycoplasmal small GTPase-like polypeptide of 240 amino acids that possesses an N-terminal WVLGE sequence. The N-terminal WVLGE sequence promotes activation of Rac1 and subsequent host cancer cell proliferation. To investigate the function of the WxxxE motif in the interaction with Rac1 and host tumor progression, we synthesized a 35-amino acid WVLGE-containing polypeptide derived from a cell-penetrating peptide derived from the azurin protein. We verified that the WVLGE-containing polypeptide targeted MCF-7 cells rather than MCF-10A cells...
May 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28549347/the-roles-of-ing5-in-gliomas-a-good-marker-for-tumorigenesis-and-a-potential-target-for-gene-therapy
#2
Shuang Zhao, Zhi-Juan Zhao, Hao-Yu He, Ji-Cheng Wu, Xiao-Qing Ding, Lei Yang, Ning Jia, Zhi-Jie Li, Hua-Chuan Zheng
To elucidate the anti-tumor effects and molecular mechanisms of ING5 on glioma cells, we overexpressed it in U87 cells, and examined the phenotypes and their relevant molecules. It was found that ING5 overexpression suppressed proliferation, energy metabolism, migration, invasion, and induced G2/M arrest, apoptosis, dedifferentiation, senescence, mesenchymal- epithelial transition and chemoresistance to cisplatin, MG132, paclitaxel and SAHA in U87 cells. There appeared a lower expression of N-cadherin, Twist, Slug, Zeb1, Zeb2, Snail, Ac-H3, Ac-H4, Cdc2, Cdk4 and XIAP, but a higher expression of Claudin 1, Histones 3 and 4, p21, p53, Bax, β-catenin, PI3K, Akt, and p-Akt in ING5 transfectants...
May 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28549307/thymoquinone-protects-against-the-sepsis-induced-mortality-mesenteric-hypoperfusion-aortic-dysfunction-and-multiple-organ-damage-in-rats
#3
Erdem Kamil Ozer, Mustafa Tugrul Goktas, Aysun Toker, Sultan Pehlivan, Hulagu Bariskaner, Ceyhan Ugurluoglu, Alper Bektas Iskit
BACKGROUND: Thymoquinone (TQ) is a potent cytoprotective, antioxidant and anti-inflammatory agent. We aimed to investigate the possible protective effects of TQ on survival, mesenteric artery blood flow (MABF), vascular reactivity, oxidative and inflammatory injuries in a murine sepsis model induced by cecal ligation and puncture (CLP). METHODS: Wistar rats were divided into the following four groups: Sham, CLP, Sham+TQ and CLP+TQ. TQ (1mg/kg/day) or vehicle (dimethyl sulfoxide, 1mL/kg/day) was intraperitoneally injected for 3 days...
March 24, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28549065/c-elegans-daf-16-foxo-interacts-with-tgf-%C3%A3-bmp-signaling-to-induce-germline-tumor-formation-via-mtorc1-activation
#4
Wenjing Qi, Yijian Yan, Dietmar Pfeifer, Erika Donner V Gromoff, Yimin Wang, Wolfgang Maier, Ralf Baumeister
Activation of the FOXO transcription factor DAF-16 by reduced insulin/IGF signaling (IIS) is considered to be beneficial in C. elegans due to its ability to extend lifespan and to enhance stress resistance. In the germline, cell-autonomous DAF-16 activity prevents stem cell proliferation, thus acting tumor-suppressive. In contrast, hypodermal DAF-16 causes a tumorous germline phenotype characterized by hyperproliferation of the germline stem cells and rupture of the adjacent basement membrane. Here we show that cross-talk between DAF-16 and the transforming growth factor ß (TGFß)/bone morphogenic protein (BMP) signaling pathway causes germline hyperplasia and results in disruption of the basement membrane...
May 26, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28549039/paired-comparison-of-pd-l1-expression-on-cytologic-and-histologic-specimens-from-malignancies-in-the-lung-assessed-with-pd-l1-ihc-28-8pharmdx-and-pd-l1-ihc-22c3pharmdx
#5
Birgit G Skov, Torsten Skov
BACKGROUND: Programmed cell death ligand-1 (PD-L1) expression is a predictive biomarker for anti-PD-1 immunotherapy in non-small cell lung cancer. Different immunohistochemistry (IHC) assays have been developed on histologic material with different cutoffs for positivity. More than one third of the patients are diagnosed on cytology alone. We hypothesized that cytologic cell block material is suitable for PD-L1 analysis. MATERIALS AND METHODS: Eighty-six paired samples of malignancies from the lung where cytologic cell block and histologic material were available from the same lesion were stained with PD-L1 IHC 28-8pharmDx and PD-L1 IHC 22C3pharmDx...
May 25, 2017: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/28548956/dalbinol-a-rotenoid-from-amorpha-fruticosa-l-exerts-anti-proliferative-activity-by-facilitating-%C3%AE-catenin-degradation-in-hepatocellular-carcinoma-cells
#6
Xiaohui Zhu, Xin Wu, Jing Cheng, Hongbo Liao, Xiaoqing Di, Lili Li, Rong Li, Yanfang Zhou, Xiangning Zhang
Hepatocellular carcinoma (HCC) is a highly malignant tumor, and the main cause of treatment failure is malignant proliferation. Aberrations in Wnt/β-catenin signaling are associated with HCC development. Despite the improvements in overall survival made over the past decade from the advent of molecularly targeted therapies, these treatments do not have efficacy in all patients with different pathogeneses. Therefore, there is a demand for novel chemotherapeutic agents for HCC. To this end, we built a natural compound library and screened out a rotenoid named dalbinol from the seeds of Amorpha fruticosa L...
May 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28548955/exploring-brusatol-as-a-new-anti-pancreatic-cancer-adjuvant-biological-evaluation-and-mechanistic-studies
#7
Zheng Lu, Zheng-Quan Lai, Albert W N Leung, Po Sing Leung, Zhao-Shen Li, Zhi-Xiu Lin
Pancreatic cancer is highly resistant to chemotherapeutic agents and is known to have a poor prognosis. The development of new therapeutic entities is badly needed for this deadly malignancy. In this study, we demonstrated for the first time that brusatol, a natural quassinoid isolated from a Chinese herbal medicine named Bruceae Fructus, possessed potent cytotoxic effect against different pancreatic adenocarcinoma cell lines. Its anti-pancreatic cancer effect was comparable to that of the first-line chemotherapeutic agents such as gemcitabine and 5-fluorouracil, with a more favorable safety profile...
May 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28548929/brd4-facilitates-dna-damage-response-and-represses-cbx5-heterochromatin-protein-1-hp1
#8
Georgios Pongas, Marianne K Kim, Dong J Min, Carrie D House, Elizabeth Jordan, Natasha Caplen, Sirisha Chakka, Joyce Ohiri, Michael J Kruhlak, Christina M Annunziata
Ovarian cancer (OC) is a heterogeneous disease characterized by defective DNA repair. Very few targets are universally expressed in the high grade serous (HGS) subtype. We previously identified that CHK1 was overexpressed in most of HGSOC. Here, we sought to understand the DNA damage response (DDR) to CHK1 inhibition and increase the anti-tumor activity of this pathway. We found BRD4 suppression either by siRNA or BRD4 inhibitor JQ1 enhanced the cytotoxicity of CHK1 inhibition. Interestingly, BRD4 was amplified and/or upregulated in a subset of HGSOC with statistical correlation to overall survival...
May 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28548926/preclinical-study-of-cc223-as-a-potential-anti-ovarian-cancer-agent
#9
Zhenzhen Jin, Huanfu Niu, Xuenan Wang, Lei Zhang, Qin Wang, Aijun Yang
Aberrant activation of mTOR contributes to ovarian cancer progression. CC223 is a novel and potent mTOR kinase inhibitor. The current study tested its activity against human ovarian cancer cells. We showed that CC223, at nM concentrations, inhibited survival and proliferation of established/primary human ovarian cancer cells. Further, significant apoptosis activation was observed in CC223-treated ovarian cancer cells. CC223 disrupted assembly of mTOR complex 1 (mTORC1) and mTORC2 in SKOV3 cells. Meanwhile, activation of mTORC1 and mTORC2 was almost completely blocked by CC223...
May 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28548903/microenvironment-of-a-tumor-organoid-system-enhances-hepatocellular-carcinoma-malignancy-related-hallmarks
#10
Yang Wang, Kazuki Takeishi, Zhao Li, Eduardo Cervantes-Alvarez, Alexandra Collin de l'Hortet, Jorge Guzman-Lepe, Xiao Cui, Jiye Zhu
Organ-like microenviroment and 3-dimensional (3D) cell culture conformations have been suggested as promising approaches to mimic in a micro-scale a whole organ cellular functions and interactions present in vivo. We have used this approach to examine biologic features of hepatocellular carcinoma (HCC) cells. In this study, we demonstrate that hepatocellular carcinoma (HCC) cells, fibroblasts, endothelial cells and extracellular matrix can generate organoid-like spheroids that enhanced numerous features of human HCC observed in vivo...
May 26, 2017: Organogenesis
https://www.readbyqxmd.com/read/28548889/therapy-of-advanced-non-small-cell-lung-cancer-with-an-sn-38-anti-trop-2-drug-conjugate-sacituzumab-govitecan
#11
Rebecca Suk Heist, Michael J Guarino, Gregory Masters, W Thomas Purcell, Alexander N Starodub, Leora Horn, Ronald J Scheff, Aditya Bardia, Wells A Messersmith, Jordan Berlin, Allyson J Ocean, Serengulam V Govindan, Pius Maliakal, Boyd Mudenda, William A Wegener, Robert M Sharkey, David M Goldenberg, D Ross Camidge
Purpose Trop-2, expressed in most solid cancers, may be a target for antibody-drug conjugates (ADCs) in non-small-cell lung cancer (NSCLC). We studied sacituzumab govitecan (IMMU-132), a Trop-2 ADC, for the targeting of SN-38. Patients and Methods We evaluated IMMU-132 in a single-arm multicenter trial in patients with pretreated metastatic NSCLC who received either 8 or 10 mg/kg on days 1 and 8 of 21-day cycles. The primary end points were safety and objective response rate (ORR). Progression-free survival and overall survival were secondary end points...
May 26, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28548885/metformin-inhibits-p-gingivalis-lipopolysaccharide-lps-influenced-inflammatory-response-in-human-gingival-fibroblasts-via-regulating-activating-transcription-factor-3-atf3-expression
#12
Wenyan Kang, Ting Wang, Zhekai Hu, Feng Liu, Yundong Sun, Shaohua Ge
BACKGROUND: Chronic periodontitis is one of the most prevalent oral diseases, which is associated with Porphyromonas gingivalis (P. gingivalis) Lipopolysaccharide (LPS) infection, and has profound effects on type 2 diabetes mellitus (DM2). Metformin, a well-known antidiabetic agent, has been reported to exert anti-inflammatory effects on various cells. This study aimed to investigate the role of metformin on LPS-influenced inflammatory response in human gingival fibroblasts (HGFs). METHODS: Dose-dependent additive effects of metformin on LPS-influenced HGFs were detected...
May 26, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28548480/d-retro-enantiomer-of-quorum-sensing-peptides-modified-polymeric-micelles-for-brain-tumor-targeted-drug-delivery
#13
Danni Ran, Jiani Mao, Changyou Zhan, Cao Xie, Huitong Ruan, Man Ying, Jianfen Zhou, Wan-Liang Lu, Weiyue Lu
In comparison to other tumors, various barriers such as the blood-brain barrier (BBB), enzymatic barriers and the blood-brain tumor barrier (BBTB) severely impede the successful treatment of glioma. Peptide ligands were frequently used as targeting moieties to mediate brain tumor targeted drug delivery. LWSW (SYPGWSW) is a recently reported quorum sensing peptide which is able to efficiently cross the BBB. Even though the linear LWSW traverses the BBB in vitro, its' in vivo targeting ability has been greatly impaired due to proteolysis...
May 26, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28548103/an-aavp-based-solid-phase-transducing-matrix-for-transgene-delivery-potential-for-translational-applications
#14
T L Smith, G R Souza, R L Sidman, W Arap, R Pasqualini
A hybrid vector of adeno-associated virus and phage (termed AAVP) has been introduced as a platform for systemic ligand-directed delivery of transgenes to tumors over the past decade. A series of studies have evaluated the AAVP platform for potential theranostic or purely therapeutic applications in several tumor models. Sufficient ligand-directed tumor targeting consistently resulted in specific molecular-genetic imaging and/or anti-tumor responses to 'suicide' transgene delivery. However, efforts to optimize transduction efficiency are still ongoing...
May 26, 2017: Cancer Gene Therapy
https://www.readbyqxmd.com/read/28548025/reprogramming-the-oncogenic-response-set-protein-as-a-potential-therapeutic-target-in-cancer
#15
Man-Hsin Hung, Kuen-Feng Chen
SET is a multitask oncoprotein that promotes the initiation and progression of cancer. Overexpression of SET has been characterized as being tumor-specific and is associated with adverse clinical outcomes in many different human malignant diseases. Notably, SET has been shown to promote the development of therapeutic resistance in cancer cells. Area covered: In this review, we summarized the currently available evidence relating to the oncogenic roles, biological functions and clinical relevance of SET protein in cancer...
May 26, 2017: Expert Opinion on Therapeutic Targets
https://www.readbyqxmd.com/read/28547976/prevalence-of-biological-types-of-breast-cancer-and-their-influence-on-disease-staging-and-therapeutic-management-a-single-center-study
#16
Tomasz Nowikiewicz, Ewa Chmielowska, Hanna Andrusewicz, Joanna Łysik-Miśkurka, Iwona Głowacka, Magdalena Sowa, Wojciech Zegarski
According to the St. Gallen 2011 consensus, proper qualification of breast cancer patients for treatment requires taking into consideration the division into biological types of neoplasms. The goal of this work was to assess the prevalence of all biological types of breast cancer in the population of Kuyavian-Pomeranian province. We determined the influence of particular types of neoplasms on the degree of disease progression and the choice of therapeutic management. The study was conducted on a group of 2653 patients treated surgically due to malignant breast tumors in the Oncology Centre in Bydgoszcz...
2017: Polish Journal of Pathology: Official Journal of the Polish Society of Pathologists
https://www.readbyqxmd.com/read/28547946/ccr7-and-cxcr4-expression-in-primary-head-and-neck-squamous-cell-carcinomas-and-nodal-metastases-%C3%A2-a-clinical-and-immunohistochemical-study
#17
Maya Al-Jokhadar, Ahmad Al-Mandily, Khaled Zaid, Elie Azar Maalouf
Background: Squamous cell carcinomas (SCCs) are common head and neck malignancies demonstrating lymph node LN involvement. Recently chemokine receptor overxpression has been reported in many cancers. Of particular interest, CCR7 appears to be a strong mediator of LN metastases, while CXCR4 may mediate distant metastases. Any relations between their expression in primary HNSCCs and metastatic lymph nodes need to be clarified. Aims: To investigate CCR7 andCXCR4 expression in primary HNSCCs of all tumor sizes, clinical stages and histological grades, as well as involved lymph nodes, then make comparisons, also with control normal oral epithelium...
April 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28547540/investigation-of-anti-neuronal-antibodies-in-status-epilepticus-of-unknown-etiology-a-prospective-study
#18
Murat Mert Atmaca, Erdem Tuzun, Ece Erdag, Nerses Bebek, Betul Baykan, Candan Gurses
There have been recent reports of antibody-mediated status epilepticus. The objective of our study was to investigate the prevalence of neuronal autoantibodies in patients with status epilepticus (SE) with unresolved etiology. The presence of neuronal autoantibodies was investigated prospectively in adult patients with SE who presented to our clinic between February 2012 and December 2013 with unresolved etiology. Clinical and electrophysiologic features of seropositive patients were recorded. Also, seronegative and seropositive patient groups were compared in terms of demographic and clinical features, treatment responses, and outcomes...
May 25, 2017: Acta Neurologica Belgica
https://www.readbyqxmd.com/read/28547389/anti-inflammation-compounds-from-the-seedpods-of-pongamia-pinnata-l-pierre-guided-by-the-bioactivity-and-uplc-hresims
#19
Hong Guo, Zisong Bai, Yangyang Xu, Xueqin Wu, Ning Li, Yan Zhu, Xiaoming Wang, Peng Zhang
Pongamia pinnata (Linn.) Pierre has anti-inflammatory activity and could significantly decrease serum tumor necrosis factor-α and IL-10 in arthritic rats. Previous research indicated the typical chemical constituent in P. pinnata is furanoflavone. Guided by anti-inflammatory active assay and UPLC-HRESIMS chromatography, 22 compounds were isolated from the ethanol extract of P. pinnata seedpods. One novel furanoflavone, 4'-hydroxypinnatin, was elucidated by HRESIMS, 1D- and 2D-NMR spectra. The 21 known compounds, including 9 furanoflavone, were identified by comparing their NMR data with the previous data in reference...
May 25, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/28547002/oncolytic-herpes-simplex-virus-inhibits-pediatric-brain-tumor-migration-and-invasion
#20
Julia V Cockle, Anke Brüning-Richardson, Karen J Scott, Jill Thompson, Timothy Kottke, Ewan Morrison, Azam Ismail, Angel M Carcaboso, Ailsa Rose, Peter Selby, Joe Conner, Susan Picton, Susan Short, Richard Vile, Alan Melcher, Elizabeth Ilett
Pediatric high-grade glioma (pHGG) and diffuse intrinsic pontine glioma (DIPG) are invasive tumors with poor survival. Oncolytic virotherapy, initially devised as a direct cytotoxic treatment, is now also known to act via immune-mediated mechanisms. Here we investigate a previously unreported mechanism of action: the inhibition of migration and invasion in pediatric brain tumors. We evaluated the effect of oncolytic herpes simplex virus 1716 (HSV1716) on the migration and invasion of pHGG and DIPG both in vitro using 2D (scratch assay, live cell imaging) and 3D (spheroid invasion in collagen) assays and in vivo using an orthotopic xenograft model of DIPG invasion...
June 16, 2017: Molecular Therapy Oncolytics
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