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https://www.readbyqxmd.com/read/28110318/genetic-variation-of-the-psca-gene-rs2294008-is-not-associated-with-the-risk-of-prostate-cancer
#1
Lee Il-Seok, Pil Seo Sung, Sok Ha Yun, Jeong Pildu, Won Kang Ho, Tae Kim Won, Kim Yong-June, Joong Yun Seok, Cheol Lee Sang, Kim Wun-Jae
Prostate stem cell antigen (PSCA) is a cell-membrane glycoprotein consisting of 123 amino acids and highly expressed in the prostate, but there have been few reports on the relationship between rs2294008 of PSCA and prostate cancer in the literature. Therefore, we evaluated the association between rs2294008 and the risk of prostate cancer. A total of 240 prostate cancer patients and 306 controls (patients with benign prostatic hyperplasia) were enrolled. Genotype analysis of rs2294008 of PSCA was performed using PCR...
January 19, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28110188/p53-dependent-apoptosis-and-cell-cycle-delay-induced-by-heteroleptic-complexes-in-human-cervical-cancer-cells
#2
Gunjan Sharma, Nishant Kumar Rana, Priya Singh, Pradeep Dubey, Daya Shankar Pandey, Biplob Koch
We previously reported synthesis of novel arene ruthenium (Ru) complexes and evaluated their antitumor activity in murine lymphoma (DL) cells. In this present study we further investigated the mechanism of action of two ruthenium complexes [complex 1 (η6-arene)RuCl(2-pcdpm)] and complex 2 (η6-arene)RuCl(4-mtdpm)] in cervical cancer cell line (HeLa). Our studies demonstrate that anticancer property of these two complexes was due to induction of apoptosis through p53 mediated pathway as well as arrest of cells in G2/M phase of cell cycle...
January 19, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28109855/heterologous-expression-and-characterization-of-plant-taxadiene-5%C3%AE-hydroxylase-cyp725a4-in-escherichia-coli
#3
John Edward Rouck, Bradley Walters Biggs, Amogh Kambalyal, William R Arnold, Marjan De Mey, Parayil Kumaran Ajikumar, Aditi Das
Taxadiene-5α-Hydroxylase (CYP725A4) is a membrane-bound plant cytochrome P450 that catalyzes the oxidation of taxadiene to taxadiene-5α-ol. This oxidation is a key step in the production of the valuable cancer therapeutic and natural plant product, taxol. In this work, we report the bacterial expression and purification of six different constructs of CYP725A4. All six of these constructs are N-terminally modified and three of them are fused to cytochrome P450 reductase to form a chimera construct. The construct with the highest yield of CYP725A4 protein was then selected for substrate binding and kinetic analysis...
January 18, 2017: Protein Expression and Purification
https://www.readbyqxmd.com/read/28109100/-claudin-3-expression-in-colorectal-carcinoma-and-its-significance
#4
Jing-Yi Li, Fang Xie, Xiao-Ping Xu, Juan-Juan Ma, Dai-Chao Zhou, Yan Liao, Jing Tang, Qian Xie, Lan Bai, Qing-Zhen Nan
OBJECTIVE: To investigate the expression of claudin-3 in colorectal carcinoma and its association with the occurrence, progression and prognosis of colorectal cancer. METHODS: Forty surgical specimens of colorectal carcinoma and 22 adjacent normal tissues resected between October, 2010 and January, 2013 at Nanfang Hospital were examined for claudin-3 expression using immunohistochemistry, which was analyzed in association with the clinicopathological parameters and the survival of the patients...
January 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28109085/silencing-of-interferon-induced-transmembrane-protein-1-ifitm1-inhibits-proliferation-migration-and-invasion-in-lung-cancer-cells
#5
Bing Jin, Hua Jin, Jing Wang
Interferon-induced transmembrane protein 1 (IFITM1), a 17-kDa membrane protein, is largely known as a player in many cellular functions. Recently, there have been studies showing overexpression of IFITM1 in cancers and a positive correlation of IFITM1 overexpression with tumor progression. However, it is poorly understood what role IFITM1 plays in lung cancer. In this study, we presented evidence that IFITM1 was highly expressed in lung cancer tissues and cell lines. IFITM1 silencing inhibited lung cancer cell proliferation, migration and invasion <em>in vitro</em>...
January 20, 2017: Oncology Research
https://www.readbyqxmd.com/read/28108517/sdhd-promoter-mutations-ablate-gabp-transcription-factor-binding-in-melanoma
#6
Tongwu Zhang, Mai Xu, Matthew M Makowski, Christine Lee, Michael Kovacs, Jun Fang, Esther Willems, Jeffrey M Trent, Nicholas K Hayward, Michiel Vermeulen, Kevin M Brown
SDHD encodes subunit D of the succinate dehydrogenase complex, an integral membrane protein. Across cancer types, recurrent SDHD promoter mutations were reported to occur exclusively in melanomas, at a frequency of 4-5%. These mutations are predicted to disrupt consensus ETS-transcription factor binding sites and are correlated with both reduced SDHD gene expression and poor prognosis. However, the consequence of these mutations on SDHD expression in melanoma is still unclear. Here, we found that expression of SDHD in melanoma correlated with the expression of multiple ETS-transcription factors, particularly in SDHD promoter wild-type samples...
January 20, 2017: Cancer Research
https://www.readbyqxmd.com/read/28108259/appls-more-than-just-adiponectin-receptor-binding-proteins
#7
REVIEW
Zhuoying Liu, Ting Xiao, Xiaoyu Peng, Guangdi Li, Fang Hu
APPLs (adaptor proteins containing the pleckstrin homology domain, phosphotyrosine binding domain and leucine zipper motif) are multifunctional adaptor proteins that bind to various membrane receptors, nuclear factors and signaling proteins to regulate many biological activities and processes, such as cell proliferation, chromatin remodeling, endosomal trafficking, cell survival, cell metabolism and apoptosis. APPL1, one of the APPL isoforms, was the first identified protein and interacts directly with adiponectin receptors to mediate adiponectin signaling to enhance lipid oxidation and glucose uptake...
January 17, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28107959/use-of-quantum-dot-beads-labeled-monoclonal-antibody-to-improve-the-sensitivity-of-a-quantitative-and-simultaneous-immunochromatographic-assay-for-neuron-specific-enolase-and-carcinoembryonic-antigen
#8
Kun Xiao, Kan Wang, Weijian Qin, Yafei Hou, Wenting Lu, Hao Xu, Yan Wo, Daxiang Cui
Detection of multiplex tumor markers was of great importance for cancer diagnosis. Immunochromatographic test strip (ICTS) was the most frequently-used point-of-care detection means. Herein, a convenient and fast method for simultaneous quantitative detection of neuron specific enolase (NSE) and carcinoembryonic antigen (CEA) was developed based on ICTS using quantum dot beads (QBs) as marking material. Good monodispersity, high colloidal stability and carboxyl-modified (COOH-) QBs were used. For this method, two test lines were applied to the NC membrane for simultaneous analysis of CEA and NSE respectively...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28107520/pgrmc1-is-a-novel-potential-tumor-biomarker-of-human-renal-cell-carcinoma-based-on-quantitative-proteomic-and-integrative-biological-assessments
#9
Dan Zhang, Xiangying Xia, Xixi Wang, Peng Zhang, Weiliang Lu, Yamei Yu, Shi Deng, Hanshuo Yang, Hongxia Zhu, Ningzhi Xu, Shufang Liang
Progesterone receptor membrane component 1 (PGRMC1) is widely observed with an elevated level in multiple human cancers. However, the roles of PGRMC1 in renal cancer are not clear and merit further study. In this report, we made a systematic, integrative biological assessment for PGRMC1 in renal cell carcinoma (RCC) by a quantitative proteomic identification, immunohistochemical detection, and its clinic pathologic significance analysis. We found that PGRMC1 abundance is increased by 3.91-fold in RCC tissues compared with its autologous para-cancerous tissues by a quantitative proteome identification...
2017: PloS One
https://www.readbyqxmd.com/read/28107190/radiosynthesis-and-validation-of-%C3%A2-18f-3-fluoro-2-hydroxypropionate-18f-flac-as-a-pet-tracer-of-lactate-to-monitor-mct1-dependent-lactate-uptake-in-tumors
#10
Vincent F Van Hée, Daniel Labar, Gwenaël Dehon, Debora Grasso, Vincent Grégoire, Giulio G Muccioli, Raphaël Frédérick, Pierre Sonveaux
Cancers develop metabolic strategies to cope with their microenvironment often characterized by hypoxia, limited nutrient bioavailability and exposure to anticancer treatments. Among these strategies, the metabolic symbiosis based on the exchange of lactate between hypoxic/glycolytic cancer cells that convert glucose to lactate and oxidative cancer cells that preferentially use lactate as an oxidative fuel optimizes the bioavailability of glucose to hypoxic cancer cells. This metabolic cooperation has been described in various human cancers and can provide resistance to anti-angiogenic therapies...
January 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28107095/chibby1-knockdown-promotes-mesenchymal-to-epithelial-transition-like-changes
#11
Victoria Fischer, Michael Wong, Feng-Qian Li, Ken-Ichi Takemaru
Chibby1 (Cby1) was originally isolated as a binding partner for β-catenin, a dual function protein in cell-cell adhesion and in canonical Wnt signaling. The canonical Wnt/β-catenin pathway is dysregulated in various diseases including cancer, most notably of the gastrointestinal origin. To investigate the role of Cby1 in colorectal tumorigenesis, we generated stable Cby1-knockdown (KD) SW480 colon cancer cells. Unexpectedly, we found that Cby1 KD induces mesenchymal-to-epithelial transition (MET)-like changes in SW480 as well as in HEK293 cells...
January 20, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28107086/interaction-between-lipid-droplets-and-endoplasmic-reticulum-in-human-atherosclerotic-plaques
#12
Ida Perrotta
Lipid droplets (LDs) are intracellular organelles that are found in nearly all cell types, where they serve fundamental roles in lipid metabolism and energy homeostasis. Traditionally considered as simple lipid storage deposits, these dynamic and remarkable organelles have recently been implicated in a number of other cellular functions, ranging from protein storage and degradation to virus replication. Intracellular accumulation of LDs is also a hallmark feature of diverse human diseases including diabetes type II, obesity, hepatosteatosis, cancer, and atherosclerosis...
January 20, 2017: Ultrastructural Pathology
https://www.readbyqxmd.com/read/28106780/integrins-and-cell-metabolism-an-intimate-relationship-impacting-cancer
#13
REVIEW
Rehman Ata, Costin N Antonescu
Integrins are important regulators of cell survival, proliferation, adhesion and migration. Once activated, integrins establish a regulated link between the extracellular matrix and the cytoskeleton. Integrins have well-established functions in cancer, such as in controlling cell survival by engagement of many specific intracellular signaling pathways and in facilitating metastasis. Integrins and associated proteins are regulated by control of transcription, membrane traffic, and degradation, as well as by a number of post-translational modifications including glycosylation, allowing integrin function to be modulated to conform to various cellular needs and environmental conditions...
January 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28106549/the-multimerization-state-of%C3%A2-the%C3%A2-amyloid-%C3%AE-42-amyloid-peptide-governs-its-interaction-network-with%C3%A2-the%C3%A2-extracellular-matrix
#14
Romain Salza, Claire Lethias, Sylvie Ricard-Blum
The goals of this work were i) to identify the interactions of amyloid-β (Aβ)42 under monomeric, oligomeric, and fibrillar forms with the extracellular matrix (ECM) and receptors, ii) to determine the influence of Aβ42 supramolecular organization on these interactions, and iii) to identify the molecular functions, biological processes, and pathways targeted by Aβ42 in the ECM. The ECM and cell surface partners of Aβ42 and its supramolecular forms were identified with protein and glycosaminoglycan (GAG) arrays (81 molecules in triplicate) probed by surface plasmon resonance imaging...
January 18, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28106541/cell-membrane-and-intracellular-expression-of-toll-like-receptor-9-tlr9-in-colorectal-cancer-and-breast-cancer-cell-lines
#15
Shadab Shahriari, Somayeh Rezaeifard, Hamid Reza Moghimi, Mohammad Reza Khorramizadeh, Zahra Faghih
BACKGROUND: Toll-like receptor 9 (TLR9) is a DNA receptor of innate immune system which plays a pivotal role in inflammatory response. Recent evidence reveals over-expression and functionality of TLR9 in a wide variety of cancer cells and its contribution to tumor cell proliferation and survival. OBJECTIVE: In this study, we assessed the aberrant cell surface expression of TLR9 in cancer using cell-lines model. METHODS: Three breast cancer cell-lines (MDA-MB-231, MCF7 and SKBR3) and five colorectal adenocarcinoma cell-lines (HT29, HT29/219, SW480, SW48 and SW1116) in addition to one primary foreskin isolated fibroblast cell were analyzed for cell surface and intracellular expression of TLR9 by flow cytometry method...
January 13, 2017: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/28106372/folate-engineered-microvesicles-for-enhanced-target-and-synergistic-therapy-towards-breast-cancer
#16
Lian Zhu, Di Dong, Zi-Li Yu, Yi-Fang Zhao, Dai-Wen Pang, Zhi-Ling Zhang
As an ideal nanovector candidate, microvesicles (MVs) have been gradually utilized for packaging kinds of functional molecules for effective tumor diagnosis and therapy; however, the deficiency of their tumor targeting influenced their therapy efficacy. Through a facile phospholipid substitution strategy, MVs based drug delivery system (DDS) was apparently endowed with high tumor targeting towards breast cancer thanks to the modified folate onto the membrane of MVs, simultaneously possessed of synergistic anti-tumor effect, and in vivo tumor imaging attributed to the SA-QDs labeling...
January 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28106146/asymmetric-waveforms-decrease-lethal-thresholds-in-high-frequency-irreversible-electroporation-therapies
#17
Michael B Sano, Richard E Fan, Lei Xing
Irreversible electroporation (IRE) is a promising non-thermal treatment for inoperable tumors which uses short (50-100 μs) high voltage monopolar pulses to disrupt the membranes of cells within a well-defined volume. Challenges with IRE include complex treatment planning and the induction of intense muscle contractions. High frequency IRE (H-FIRE) uses bursts of ultrashort (0.25-5 μs) alternating polarity pulses to produce more predictable ablations and alleviate muscle contractions associated with IRE...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28105229/programmed-cell-death-1-correlates-with-the-occurrence-and-development-of-mg63-osteosarcoma
#18
Fuyou Zhao, Qiong Wu, Xiusong Dai, Yumei Li, Huaiyong Gan, Ri Wang, Jie Lv, Yuqing Chen
The aim of the present study was to investigate the effect of programmed cell death 1 (PD-1) on osteosarcoma (OD) stem cells and T cells, and to determine their correlation. OS stem cells were sorted and identified from OS MG63 cells. Flow cytometry was used to detect the PD-1 expression of the OS tumor stem cell membrane surface. The expression of PD-1 mRNA was detected by reverse transcription-polymerase chain reaction (RT-PCR). MTT was used to detect the effect of PD-1 signals on T-cell proliferation. The results indicated that the cancer cells (cultured in DMEM medium containing 10% fetal bovine serum) exhibited clear proliferation within 1 week of cell culture, which showed their strong proliferation and aggressive ability...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28104921/effects-of-gold-nanoparticles-on-lipid-packing-and-membrane-pore-formation
#19
Anupama Bhat, Lance W Edwards, Xiao Fu, Dillon L Badman, Samuel Huo, Albert J Jin, Qi Lu
Gold nanoparticles (AuNPs) have been increasingly integrated in biological systems, making it imperative to understand their interactions with cell membranes, the first barriers to be crossed to enter cells. Herein, liposomes composed of 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) as a model membrane system were treated with citrate stabilized AuNPs from 5 to 30 nm at various concentrations. The fluorescence shifts of Laurdan probes reveal that AuNPs in general made liposomes more fluidic. The increased fluidity is expected to result in an increased surface area, and thus liposome shape changes from circular to less circular, which was further confirmed with fluorescence microscopy...
December 26, 2016: Applied Physics Letters
https://www.readbyqxmd.com/read/28104442/prostaglandin-e2-receptor-4-mediates-renal-cell-carcinoma-intravasation-and-metastasis
#20
Yushan Zhang, Hamsa Thayele Purayil, Joseph B Black, Francis Fetto, Lauren D Lynch, Jude N Masannat, Yehia Daaka
Treatment options for metastatic renal cell carcinoma (RCC) are limited. In this study, we investigated impact of prostaglandin E2 (PGE2) receptor 4 (EP4) on RCC metastasis. We found that knockdown of EP4 in two RCC cell lines, ACHN and SN12C, does not affect xenograft tumor take or growth rate in mice, but reduces metastasis by decreasing tumor intravasation. Using chick chorioallantoic membrane (CAM) assay, we confirmed that blockade of EP4 signaling inhibits tumor intravasation. In vitro studies associated EP4 expression and activity with RCC cell transendothelial migration (TEM)...
January 16, 2017: Cancer Letters
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