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https://www.readbyqxmd.com/read/29156828/the-%C3%AE-glucan-from-lentinus-edodes-suppresses-cell-proliferation-and-promotes-apoptosis-in-estrogen-receptor-positive-breast-cancers
#1
Hui Xu, Siwei Zou, Xiaojuan Xu
Breast cancer is now the most common cancer in worldwide women, and novel interventions are needed to overcome the resistance occurring in the estrogen-targeted endocrine therapy. Herein, we demonstrate that the β-glucan from Lentinus edodes (LNT) exhibited a profound inhibition ratio of ∼53% against estrogen receptor positive (ER+) MCF-7 tumor growth in nude mice similar to the positive control of cisplatin. Immunohistochemistry images showed that LNT evidently suppressed cell proliferation and promoted apoptosis in MCF-7 tumor tissues...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156827/hepatitis-c-virus-core-protein-potentiates-proangiogenic-activity-of-hepatocellular-carcinoma-cells
#2
Yu-Yun Shao, Min-Shu Hsieh, Han-Yu Wang, Yong-Shi Li, Hang Lin, Hung-Wei Hsu, Chung-Yi Huang, Chih-Hung Hsu, Ann-Lii Cheng
Increased angiogenic activity has been demonstrated in hepatitis C virus (HCV)-related hepatocellular carcinoma (HCC), but the mechanism was unclear. To study the role of HCV core protein, we used tube formation and Matrigel plug assays to assess the proangiogenic activity of an HCC cell line, HuH7, and 2 of its stable clones-HuH7-core-high and HuH7-core-low, with high and low HCV core protein expression, respectively. In both assays, HuH7-core-high and HuH7-core-low cells dose-dependently induced stronger angiogenesis than control cells...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156810/psc-derived-galectin-1-inducing-epithelial-mesenchymal-transition-of-pancreatic-ductal-adenocarcinoma-cells-by-activating-the-nf-%C3%AE%C2%BAb-pathway
#3
Dong Tang, Jingqiu Zhang, Zhongxu Yuan, Hongpeng Zhang, Yang Chong, Yuqin Huang, Jie Wang, Qingquan Xiong, Sen Wang, Qi Wu, Ying Tian, Yongdie Lu, Xiao Ge, Wenjing Shen, Daorong Wang
Galectin-1 has previously been shown to be strongly expressed in activated pancreatic stellate cells (PSCs) and promote the development and metastasis of pancreatic ductal adenocarcinoma (PDAC). However, the molecular mechanisms by which Galectin-1 promotes the malignant behavior of pancreatic cancer cells remain unclear. In this study, we examined the effects of Galectin-1 knockdown or overexpression in PSCs co-cultured with pancreatic cancer (PANC-1) cells. Immunohistochemical analysis showed expression of epithelial-mesenchymal transition (EMT) markers and MMP9 were positively associated with the expression of Galectin-1 in 66 human PDAC tissues...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156774/micrornas-as-predictors-for-cns-relapse-of-systemic-diffuse-large-b-cell-lymphoma
#4
Nir Pillar, Osnat Bairey, Neta Goldschmidt, Yakov Fellig, Yevgenia Rosenblat, Itchak Shehtman, Danielle Haguel, Pia Raanani, Noam Shomron, Tali Siegal
Systemic diffuse large B-cell lymphoma (DLBCL) is a potentially curable disease using current regimen of immunochemotherapy. Central nervous system (CNS) relapse is a complication that occurs in approximately 5% of DLBCL patients and is associated with a high fatality rate. Early identification of molecular markers for CNS involvement may serve for the highly needed accurate stratification of patients into risk groups regarding CNS relapse. MicroRNAs (miRNAs) are small non-coding RNA molecules that regulate gene expression at the post-transcriptional level and are known to be involved in DLBCL pathophysiology...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156772/stat3-and-stat5a-are-potential-therapeutic-targets-in-castration-resistant-prostate-cancer
#5
Sambit K Mohanty, Kader Yagiz, Dinesh Pradhan, Daniel J Luthringer, Mahul B Amin, Serhan Alkan, Bekir Cinar
Mechanisms of castration-resistant prostate cancer (CRPC) are not well understood, thus hindering rational-based drug design. Activation of STAT3/5A, key components of the JAK/STAT pathway, is implicated in aggressive PC, yet their clinical relevance in CRPC remains elusive. Here, we evaluated the possible role of STAT3/5A in CRPC using immunological, quantitative mRNA expression profiling, and pharmacological methods. We observed a strong nuclear immunoreactivity for STAT3 and STAT5A in 93% (n=14/15) and 80% (n=12/15) of CRPC cases, respectively, compared with benign prostatic hyperplasia (BPH)...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156764/the-neil1-g83d-germline-dna-glycosylase-variant-induces-genomic-instability-and-cellular-transformation
#6
Heather A Galick, Carolyn G Marsden, Scott Kathe, Julie A Dragon, Lindsay Volk, Antonia A Nemec, Susan S Wallace, Aishwarya Prakash, Sylvie Doublié, Joann B Sweasy
Base excision repair (BER) is a key genome maintenance pathway. The NEIL1 DNA glycosylase recognizes oxidized bases, and likely removes damage in advance of the replication fork. The rs5745906 SNP of the NEIL1 gene is a rare human germline variant that encodes the NEIL1 G83D protein, which is devoid of DNA glycosylase activity. Here we show that expression of G83D NEIL1 in MCF10A immortalized but non-transformed mammary epithelial cells leads to replication fork stress. Upon treatment with hydrogen peroxide, we observe increased levels of stalled replication forks in cells expressing G83D NEIL1 versus cells expressing the wild-type (WT) protein...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156760/microrna-29a-increased-the-intestinal-membrane-permeability-of-colonic-epithelial-cells-in-irritable-bowel-syndrome-rats
#7
Guanqun Chao, Yingying Wang, Shuo Zhang, Weilin Yang, Zheying Ni, Xuliang Zheng
Background: The whole pathogenesis of diarrhea-predominant irritable bowel syndrome(IBS-D) is poorly understood. Our goal was to evaluate the expression change of microRNA-29a(miR-29a) in colonic epithelial cells in IBS rats and clarify the mechanism of miR-29a increasing the intestinal membrane permeability through aquaporins(AQPs). Methods: The IBS-D rats models were induced by rectal distention pressure combining with extremities constraint. The colonic epithelial cells were divided into four groups...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156726/adiponectin-receptor-agonists-inhibit-leptin-induced-pstat3-and-in-vivo-pancreatic-tumor-growth
#8
Fanuel Messaggio, Alisha M Mendonsa, Jason Castellanos, Nagaraj S Nagathihalli, Lee Gorden, Nipun B Merchant, Michael N VanSaun
Obesity is a significant risk factor for pancreatic cancer, harboring a chronic inflammatory condition characterized by dysregulation of the adipokines, leptin and adiponectin, that in turn alter oncogenic signaling pathways. We and others have shown that leptin promotes the proliferation and an invasive potential of pancreatic cancer cells through STAT3 mediated signaling. However, the role of adiponectin on the tumorigenicity of pancreatic cancer has not been elucidated. Adiponectin represents an important negative regulator of cytokines, which acts through two receptors, ADIPOR1 and ADIPOR2, to elicit pro-apoptotic, anti-inflammatory, and anti-angiogenic responses...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156718/interleukin-31-and-thymic-stromal-lymphopoietin-expression-in-plasma-and-lymph-node-from-hodgkin-lymphoma-patients
#9
Elisa Ferretti, Stefan Hohaus, Arianna Di Napoli, Beatrice Belmonte, Annarosa Cuccaro, Elisa Cupelli, Eugenio Galli, Vittoria Rufini, Gino Tripodi, Giulio Fraternali-Orcioni, Vito Pistoia, Anna Corcione
Hodgkin Lymphoma (HL) is a tumor of B-cell origin characterized by Hodgkin and Reed-Stenberg (H/RS) cells embedded in an inflammatory tissue where numerous cytokines/chemokines contribute to shape the microenvironment, leading to the typical clinical symptoms. We investigated: i) the expression of Interleukin-IL-31 (IL-31) and Thymic Stromal Lymphopoietin (TSLP), two Th2-related cytokines with tumor-promoting and pruritogenic functions, and of the respective receptors in HL invaded lymph nodes by flow cytometry, and ii) the potential association of IL-31/TSLP plasma concentrations with clinical characteristics by ELISA...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156704/ackr3-expression-on-diffuse-large-b-cell-lymphoma-is-required-for-tumor-spreading-and-tissue-infiltration
#10
Viola Puddinu, Sabrina Casella, Egle Radice, Sylvia Thelen, Stefan Dirnhofer, Francesco Bertoni, Marcus Thelen
Diffuse large B cell lymphoma (DLBCL) is the most frequent lymphoma accounting for more than the 30% of the cases. Involvement of extranodal sites, such as bone marrow and central nervous system, is associated with poor prognosis. A contribution of the chemokine system in these processes is assumed as it is known as a critical regulator of the metastatic process in cancer. The atypical chemokine receptor 3 (ACKR3), which does not couple to G-proteins and does not mediate cell migration, acts as a scavenger for CXCL11 and CXCL12, interfering with the tumor homing CXCL12/CXCR4 axis...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156646/inhibition-of-bcl-2-and-cox-2-protein-expression-after-local-application-of-a-new-carmustine-loaded-clinoptilolite-based-delivery-system-in-a-chemically-induced-skin-cancer-model-in-mice
#11
Cristina Mihaela Ghiciuc, Aurel Lulu Strat, Lacramioara Ochiuz, Catalina Elena Lupusoru, Maria Ignat, Aurelia Vasile, Alexandru Grigorovici, Iulian Stoleriu, Carmen Solcan
Our research has focused on in vitro and in vivo evaluations of a new Carmustine (BCNU)-loaded clinoptilolite-based delivery system. Two clinoptilolite ionic forms-hydrogen form (HCLI) and sodium form (NaCLI)-were prepared, allowing a loading degree of about 5-6 mg BCNU/g of zeolite matrix due to the dual porous feature of clinoptilolite. Clinoptilolite-based delivery systems released 35.23% of the load in 12 h for the BCNU@HCLI system and only 10.82% for the BCNU@NaCLI system. The BCNU@HCLI system was chosen to develop gel and cream semisolid dosage forms...
November 20, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29156567/the-role-of-infected-cell-proliferation-in-the-clearance-of-acute-hbv-infection-in-humans
#12
Ashish Goyal, Ruy M Ribeiro, Alan S Perelson
Around 90-95% of hepatitis B virus (HBV) infected adults do not progress to the chronic phase and, instead, recover naturally. The strengths of the cytolytic and non-cytolytic immune responses are key players that decide the fate of acute HBV infection. In addition, it has been hypothesized that proliferation of infected cells resulting in uninfected progeny and/or cytokine-mediated degradation of covalently closed circular DNA (cccDNA) leading to the cure of infected cells are two major mechanisms assisting the adaptive immune response in the clearance of acute HBV infection in humans...
November 18, 2017: Viruses
https://www.readbyqxmd.com/read/29156549/new-tripentone-analogs-with-antiproliferative-activity
#13
Barbara Parrino, Salviana Ullo, Alessandro Attanzio, Virginia Spanò, Stella Cascioferro, Alessandra Montalbano, Paola Barraja, Luisa Tesoriere, Girolamo Cirrincione, Patrizia Diana
Tripentones represent an interesting class of compounds due to their significant cytotoxicity against different human tumor cells in the submicro-nanomolar range. New tripentone analogs, in which a pyridine moiety replaces the thiophene ring originating the fused azaindole system endowed with anticancer activity viz 8H-thieno[2,3-b]pyrrolizinones, were efficiently synthesized in four steps with fair overall yields (34-57%). All tripentone derivatives were tested in the range of 0.1-100 μM for cytotoxicity against two human tumor cell lines, HCT-116 (human colorectal carcinoma) and MCF-7 (human breast cancer)...
November 18, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29156544/endogenous-sphingolipid-signaling-pathway-implicated-in-the-action-of-croton-membranaceus-on-the-prostate-gland-in-bph-patients
#14
George Awuku Asare, Yvonne Anang, Daniel K Afriyie, Brodrick Yeboah Amoah, Bernice Asiedu, Derek Doku, Hannah Serwah Ocansey, Nana Yaw Odei Danso, Prince Tekpor, Sarah Osam
Background: Croton membranaceus extract has apoptotic effects on BPH-1 cells. This study determined if the apoptotic effects were created through the ceramide pathway. Methods: The study was a follow-up to a previous observational study of 30 histologically confirmed patients with benign prostatic hyperplasia (BPH) who were on C. membranaceus ethanolic extract at 20 mg t.i.d orally for 3 mo. Thereafter, total and free prostate-specific antigen (PSA), lipid profile plus Apo lipoprotein A and B, ceramide/Sphingophospho-kinase 1 (SphK1) and 2 (SphK2), sphingosine lyase (SPL), the cytotoxic adducts of oxidative stress 4-hydroxy-2-nonenal (4HNE) and malondialdehyde (MDA), were determined...
November 18, 2017: Medicines (Basel, Switzerland)
https://www.readbyqxmd.com/read/29156531/heated-naringin-mitigate-the-genotoxicity-effect-of-mitomycin-c-in-balb-c-mice-through-enhancing-the-antioxidant-status
#15
Mouna Maatouk, Nadia Mustapha, Imen Mokdad-Bzeouich, Hind Chaaban, Irina Ioannou, Kamel Ghedira, Mohamed Ghoul, Leila Chekir-Ghedira
A major problem with cancer chemotherapy is its severe toxic effects on non-target tissues. Assessment of natural products for their protective effect against anticancer drugs induced toxicity is gaining importance in cancer biology. The aim of the present study was to evaluate the effect of native and thermal treated naringin on the protective effect against mitomycin C (MMC) induced genotoxicity. The genotoxicity in liver kidney and brain cells isolated from Balb/C mice were evaluated by performing the comet assay...
November 15, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29156529/alpinetin-improved-high-fat-diet-induced-non-alcoholic-fatty-liver-disease-nafld-through-improving-oxidative-stress-inflammatory-response-and-lipid-metabolism
#16
Yong Zhou, Yin-Lu Ding, Jian-Liang Zhang, Peng Zhang, Jin-Qing Wang, Zhao-Hua Li
The non-alcoholic fatty liver disease (NAFLD) has become a serious medical problem and an increasing threat to public health. It is characterized by the abnormal fat accumulation in liver without excessive alcohol intake. The concurrent NAFLD might up-regulate the risk of chronic kidney disease as well as the mortality rate. Though various drugs have been investigated to attenuate NAFLD, further study is still necessary to find new therapeutic strategy and to reveal the underlying molecular mechanism. In the present study, NAFLD animal models were induced by feeding with high fat (HF) diet for 8 weeks...
November 15, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29156422/syndecan-1-in-mechanosensing-of-nanotopological-cues-in-engineered-materials
#17
Victoria Le, Jason Lee, Somali Chaterji, Adrianne Spencer, Yen-Liang Liu, Peter Kim, Hsin-Chih Yeh, Deok-Ho Kim, Aaron B Baker
The cells of the vascular system are highly sensitive to biophysical cues from their local cellular microenvironment. To engineer improved materials for vascular devices and delivery of cell therapies, a key challenge is to understand the mechanisms that cells use to sense biophysical cues from their environment. Syndecans are heparan sulfate proteoglycans (HSPGs) that consist of a protein core modified with heparan sulfate glycosaminoglycan chains. Due to their presence on the cell surface and their interaction with cytoskeletal and focal adhesion associated molecules, cell surface proteoglycans are well poised to serve as mechanosensors of the cellular microenvironment...
November 9, 2017: Biomaterials
https://www.readbyqxmd.com/read/29156375/downregulation-of-the-protein-synthesis-machinery-is-a-major-regulatory-event-during-early-adipogenic-differentiation-of-human-adipose-derived-stromal-cells
#18
Bruna H Marcon, Fabíola B Holetz, Guillermo Eastman, Ana Carolina Origa-Alves, Mariana Andrea Amorós, Alessandra Melo de Aguiar, Carmen K Rebelatto, Paulo R S Brofman, Jose Sotelo-Silveira, Bruno Dallagiovanna
Commitment of adult stem cells involves the activation of specific gene networks regulated from transcription to protein synthesis. Here, we used ribosome profiling to identify mRNAs regulated at the translational level, through both differential association to polysomes and modulation of their translational rates. We observed that translational regulation during the differentiation of human adipose-derived stromal cells (hASCs, also known as adipose-derived mesenchymal stem cells), a subset of which are stem cells, to adipocytes was a major regulatory event...
November 1, 2017: Stem Cell Research
https://www.readbyqxmd.com/read/29156351/benzamide-porphyrins-with-directly-conjugated-and-distal-pyridyl-or-pyridinium-groups-substituted-to-the-porphyrin-macrocycles-study-of-the-photosensitising-abilities-as-inducers-of-apoptosis-in-cancer-cells-under-photodynamic-conditions
#19
Devashish Sengupta, Zeaul Hoque Mazumdar, Avinaba Mukherjee, Debdulal Sharma, Amit Kumar Halder, Samita Basu, Tarun Jha
Amphiphilic porphyrin photosensitisers (PSs) having combinations of directly substituted pyridyl group(s) at the meso-position of a porphyrin macrocycle, and/or indirectly linked pyridyl groups as benzamide derivatives are reported. The compounds 5,10,15,20-tetrakis-(4-pyridylbenzamide)porphyrin (A.2), 5,10,15,20-tetra[N-(pyridine-4-yl)benzamidium] porphyrin (A.3), 5-mono-(4-pyridyl)-10,15,20-tris-(4-pyridylbenzamide)porphyrin (B.2) and 5-mono-(4-methylpyridinium)-10,15,20-tris-(4-pyridiniumbenzamide)porphyrin (B...
November 13, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29156345/the-extended-production-of-uv-induced-reactive-oxygen-species-in-l929-fibroblasts-is-attenuated-by-posttreatment-with-arrabidaea-chica-through-scavenging-mechanisms
#20
Fabianne Martins Ribeiro, Hélito Volpato, Danielle Lazarin-Bidóia, Vânia Cristina Desoti, Rebeca Oliveira de Souza, Maria José Vieira Fonseca, Tânia Ueda-Nakamura, Celso Vataru Nakamura, Sueli de Oliveira Silva
Ultraviolet radiation (UVR) exposure causes various injurious effects to human skin by generating reactive oxygen species (ROS). Excessive ROS production can lead to oxidative stress which may damage cellular components like lipids and proteins and causing photoaging. The use of natural photochemopreventive agents with antioxidant properties is an important alternative to improve the effectiveness of sunscreens and reduce skin photodamage. A crude extract (CE) from the leaves of Arrabidaea chica underwent partition by a liquid-liquid method...
November 17, 2017: Journal of Photochemistry and Photobiology. B, Biology
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