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https://www.readbyqxmd.com/read/29341617/enhancing-docetaxel-delivery-to-multidrug-resistant-cancer-cells-with-albumin-coated-nanocrystals
#1
Sheryhan F Gad, Joonyoung Park, Ji Eun Park, Gihan N Fetih, Sozan S Tous, Wooin Lee, Yoon Yeo
Intravenous delivery of poorly water-soluble anticancer drugs such as docetaxel (DTX) is challenging due to the low bioavailability and the toxicity related to solubilizing excipients. Colloidal nanoparticles are used as alternative carriers, but low drug loading capacity and circulation instability limit their clinical translation. To address these challenges, DTX nanocrystals (NCs) were prepared using Pluronic F127 as an intermediate stabilizer and albumin as a functional surface modifier, which were previously found to be effective in producing small and stable NCs...
January 17, 2018: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/29335425/sparc-expression-is-associated-with-hepatic-injury-in-rodents-and-humans-with-non-alcoholic-fatty-liver-disease
#2
Guillermo Mazzolini, Catalina Atorrasagasti, Agostina Onorato, Estanislao Peixoto, Martin Schlattjan, Jan-Peter Sowa, Svenja Sydor, Guido Gerken, Ali Canbay
Mechanisms that control progression from simple steatosis to steato-hepatitis and fibrosis in patients with non-alcoholic fatty liver disease (NAFLD) are unknown. SPARC, a secreted matricellular protein, is over-expressed in the liver under chronic injury. Contribution of SPARC accumulation to disease severity is largely unknown in NAFLD. We assessed the hypothesis that SPARC is increased in livers with more necrosis and inflammation and could be associated with more fibrosis. qrt-PCR, immunohistochemistry, and ELISA were employed to localize and quantify changes in SPARC in 62 morbidly obese patients with NAFLD/NASH and in a mouse model of diet-induced-NASH...
January 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29332125/icg-001-exerts-potent-anticancer-activity-against-uveal-melanoma-cells
#3
Salma Kaochar, Jianrong Dong, Marie Torres, Kimal Rajapakshe, Fotis Nikolos, Christel M Davis, Erik A Ehli, Cristian Coarfa, Nicholas Mitsiades, Vasiliki Poulaki
Purpose: Uveal melanoma (UM) is uniformly refractory to all available systemic chemotherapies, thus creating an urgent need for novel therapeutics. In this study, we investigated the sensitivity of UM cells to ICG-001, a small molecule reported to suppress the Wnt/β-catenin-mediated transcriptional program. Methods: We used a panel of UM cell lines to examine the effects of ICG-001 on cellular proliferation, migration, and gene expression. In vivo efficacy of ICG-001 was evaluated in a UM xenograft model...
January 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29330036/regulation-of-fibrotic-changes-by-the-synergistic-effects-of-cytokines-dimensionality-and-matrix-towards-the-development-of-an-in-vitro-human-dermal-hypertrophic-scar-model
#4
Shikha Chawla, Sourabh Ghosh
Current therapeutic strategies to reduce scarring in full thickness skin defect offer limited success due to poor understanding of scar tissue formation and the underlying signaling pathways. There is an urgent need to develop human cell based in vitro scar tissue models as animal testing is associated with ethical and logistic complications and inter-species variations. Pro-inflammatory cytokines play critical role in regulating scar development through complex interplay and interaction with the ECM and corresponding signaling pathways...
January 9, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29316598/s-orthopaedic-department-teaching-status-associated-with-adverse-outcomes-of-primary-total-knee-arthroplasty
#5
Dean C Perfetti, Nipun Sodhi, Anton Khlopas, Assem A Sultan, Suela Lamaj, Mathew R Boylan, Jared M Newman, Qais Naziri, William A Cantrell, Aditya V Maheshwari, Carl B Paulino, Michael A Mont
INTRODUCTION: Although resident physicians have a critical role in the daily management of patients, based on their limited experiences, they are thought to potentially create inefficiencies in the hospital. With changes set forth by the Comprehensive Care for Joint Replacement (CJR) program, both teaching and non-teaching hospitals are directly compared on efficiency and outcomes. Therefore, the purpose of this study was to compare outcomes between teaching and non-teaching hospitals in the state of New York...
December 22, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/29316208/effect-of-bone-sialoprotein-coated-three-dimensional-printed-calcium-phosphate-scaffolds-on-primary-human-osteoblasts
#6
Anja Klein, Andreas Baranowski, Ulrike Ritz, Hermann Götz, Sascha Heinemann, Stefan Mattyasovszky, Pol M Rommens, Alexander Hofmann
The combination of the two techniques of rapid prototyping 3D-plotting and bioactive surface functionalization is presented, with emphasis on the in vitro effect of Bone Sialoprotein (BSP) on primary human osteoblasts (hOBs). Our primary objective was to demonstrate the BSP influence on the expression of distinctive osteoblast markers in hOBs. Secondary objectives included examinations of the scaffolds' surface and the stability of BSP-coating as well as investigations of cell viability and proliferation. 3D-plotted calcium phosphate cement (CPC) scaffolds were coated with BSP via physisorption...
January 9, 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29310786/production-and-purification-of-recombinant-human-sparc
#7
Gail Workman, Amy D Bradshaw
The matricellular protein SPARC (secreted protein acidic and rich in cysteine, also known as osteonectin or as BM-40) is a collagen-binding protein with a capacity to induce cell rounding and influence proliferation in cultured cells. In mice that do not express SPARC, fibrillar collagen is reduced in some adult tissues; notably, a reduction in fibrosis is reported in response to fibrotic stimuli in lungs, heart, skin, liver, and in the eye. Recently, mutations in the gene encoding SPARC were found in patients afflicted with osteogenesis imperfecta...
2018: Methods in Cell Biology
https://www.readbyqxmd.com/read/29299351/a-phase-2-trial-of-personalized-cytotoxic-therapy-based-on-tumor-immunohistochemistry-in-previously-treated-metastatic-pancreatic-cancer-patients
#8
Ramesh K Ramanathan, Glen J Weiss, Richard G Posner, N V Rajeshkumar, Gayle Jameson, Meraj Aziz, Antje Hoering, Vanessa Bolejack, Anirban Maitra, Monica Fulk, Edward C Stites, William S Hlavacek, Zoran Gatalica, Joanne Xiu, Manuel Hidalgo, Daniel D Von Hoff, Michael T Barrett
Background: The choice of a regimen in metastatic pancreatic cancer patients following progression on 1st line therapy is empiric and outcomes are unsatisfactory. This phase II study was performed to evaluate the efficacy of therapy selected by immunohistochemistry (IHC) in these patients following progression after one or more therapies. Methods: Eligible patients underwent a percutaneous biopsy of a metastatic lesion and treatment selection was determined by IHC...
December 2017: Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/29295776/the-high-stromal-sparc-expression-is-independently-associated-with-poor-survival-of-patients-with-resected-pancreatic-ductal-adenocarcinoma-treated-with-adjuvant-gemcitabine-in-combination-with-s-1-or-adjuvant-gemcitabine-alone
#9
Ryuta Shintakuya, Naru Kondo, Yoshiaki Murakami, Kenichiro Uemura, Naoya Nakagawa, Keisuke Okano, Shinya Takahashi, Taijiro Sueda
BACKGROUND: Although postoperative adjuvant chemotherapy for pancreatic ductal adenocarcinoma (PDAC) improves survival, its efficacy varies among individuals. Identification of biomarkers that can predict the efficacy of adjuvant chemotherapy for PDAC is essential. OBJECTIVES: To investigate the predictive value of secreted protein acidic and rich in cysteine (SPARC) expression in patients with PDAC treated with adjuvant gemcitabine in combination with S-1 (adjuvant GS) or adjuvant gemcitabine alone (adjuvant G alone)...
December 26, 2017: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/29290333/technology-assisted-hip-and-knee-arthroplasties-an-analysis-of-utilization-trends
#10
Matthew Boylan, Kelly Suchman, Jonathan Vigdorchik, James Slover, Joseph Bosco
BACKGROUND: Robotic and computer navigation technology is available to surgeons for use in hip and knee arthroplasties to increase the precision of component placement. However, they do add significant costs to these procedures, and the long-term clinical outcomes and value of technology assistance for joint replacement remain unclear. METHODS: We identified 321,522 patients in Medicare Severity Diagnosis Related Groups 469 and 470 who underwent primary total hip arthroplasty (N = 133,472) or primary total or unicompartmental knee arthroplasty (N = 188,050) between 2008 and 2015 in the New York Statewide Planning and Research Cooperative System (SPARCS)...
November 29, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29284501/nucleoli-cytomorphology-in-cutaneous-melanoma-cells-a-new-prognostic-approach-to-an-old-concept
#11
Piotr Donizy, Przemyslaw Biecek, Agnieszka Halon, Adam Maciejczyk, Rafal Matkowski
BACKGROUND: The nucleolus is an organelle that is an ultrastructural element of the cell nucleus observed in H&E staining as a roundish body stained with eosin due to its high protein content. Changes in the nucleoli cytomorphology were one of the first histopathological characteristics of malignant tumors. The aim of this study was to assess the relationship between the cytomorphological characteristics of nucleoli and detailed clinicopathological parameters of melanoma patients. Moreover, we analyzed the correlation between cytomorphological parameters of nucleoli and immunoreactivity of selected proteins responsible for, among others, regulation of epithelial-mesenchymal transition (SPARC, N-cadherin), cell adhesion and motility (ALCAM, ADAM-10), mitotic divisions (PLK1), cellular survival (FOXP1) and the functioning of Golgi apparatus (GOLPH3, GP73)...
December 29, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/29280310/osteogenic-stimulation-of-human-adipose-derived-mesenchymal-stem-cells-using-a-fungal-metabolite-that-suppresses-the-polycomb-group-protein-ezh2
#12
Rebekah M Samsonraj, Amel Dudakovic, Bushra Manzar, Buer Sen, Allan B Dietz, Simon M Cool, Janet Rubin, Andre J van Wijnen
Strategies for musculoskeletal tissue regeneration apply adult mesenchymal stem/stromal cells (MSCs) that can be sourced from bone marrow- and lipo-aspirates. Adipose tissue-derived MSCs are more easily harvested in the large quantities required for skeletal tissue-engineering approaches, but are generally considered to be less osteogenic than bone marrow MSCs. Therefore, we tested a new molecular strategy to improve their osteogenic lineage-differentiation potential using the fungal metabolite cytochalasin D (CytoD)...
December 27, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/29277504/sparc-is-down-regulated-by-dna-methylation-and-functions-as-a-tumor-suppressor-in-t-cell-lymphoma
#13
Jiaqin Yan, Junhui Zhang, Xudong Zhang, Xin Li, Ling Li, Zhaoming Li, Renyin Chen, Lei Zhang, Jingjing Wu, Xinhua Wang, Zhenchang Sun, Xiaorui Fu, Yu Chang, Feifei Nan, Hui Yu, Xiaolong Wu, Xiaoyan Feng, Wencai Li, Mingzhi Zhang
The aim of this study was to assess the functional role of SPARC in T-cell non-Hodgkin's lymphoma (T-NHL), as well as the underlying molecular mechanisms. Here, we first identified SPARC expression in T-NHL tissues and cell lines through western blot and real-time PCR (RT-PCR). Overall survival of T-NHL patients with different levels of SPARC was assessed by Kaplan-Meier survival curves. Then cell proliferation, apoptosis, migration and invasion of T-NHL cells with either knockdown or overexpression of SPARC were determined by MTT, flow cytometry, transwell migration and invasion assay, respectively...
December 22, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/29237913/the-clinical-significance-of-secreted-protein-acidic-and-rich-in-cysteine-expression-in-breast-cancer-tissue-and-its-association-with-prognosis
#14
Wei Guo, Mingliang Zhang, Yong Chen, Suyang Guo
OBJECTIVE: The aim of this study was to evaluate the secreted protein acidic and rich in cysteine (SPARC) expression in breast cancer tissue and its association with patients' clinical pathology characteristics and prognosis. MATERIALS AND METHODS: Eight-eight cases with confirmed diagnosis of breast cancer who received operation from January 2010 to February 2016 were included in this study. The SPARC expression in cancer tissue was examined by immunohistochemical method...
2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/29233721/antitumor-mir-150-5p-and-mir-150-3p-inhibit-cancer-cell-aggressiveness-by-targeting-spock1-in-head-and-neck-squamous-cell-carcinoma
#15
Keiichi Koshizuka, Toyoyuki Hanazawa, Naoko Kikkawa, Koji Katada, Atsushi Okato, Takayuki Arai, Tetsuya Idichi, Yusaku Osako, Yoshitaka Okamoto, Naohiko Seki
OBJECTIVE: Our recent studies have revealed that both strands of pre-miRNAs, the guide strand and the passenger strand, are involved in cancer pathogenesis. Analyses of miRNA expression signatures by RNA sequencing in head and neck squamous cell carcinoma (HNSCC) showed that both of the strands of pre-miR-150 (miR-150-5p and miR-150-3p) were significantly downregulated, and that these miRNAs acted as antitumor miRNAs in HNSCC cells. The aim of this study was to identify oncogenic genes in HNSCC cells that were regulated by miR-150-5p and miR-150-3p...
December 9, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/29218672/effect-of-academic-status-on-outcomes-of-surgery-for-rectal-cancer
#16
Kristen Cagino, Maria S Altieri, Jie Yang, Lizhou Nie, Mark Talamini, Konstantinos Spaniolas, Paula Denoya, Aurora Pryor
BACKGROUND: The purpose of our study was to investigate surgical outcomes following advanced colorectal procedures at academic versus community institutions. METHODS: The SPARCS database was used to identify patients undergoing Abdominoperineal resection (APR) and Low Anterior Resection between 2009 and 2014. Linear mixed models and generalized linear mixed models were used to compare outcomes. Laparoscopic versus open procedures, surgery type, volume status, and stoma formation between academic and community facilities were compared...
December 7, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/29209043/crispr-cas9-edited-nsg-mice-as-pdx-models-of-human-leukemia-to-address-the-role-of-niche-derived-sparc
#17
I Tirado-Gonzalez, E Czlonka, A Nevmerzhitskaya, D Soetopo, E Bergonzani, A Mahmoud, A Contreras, I Jeremias, U Platzbecker, J P Bourquin, U Kloz, F Van der Hoeven, H Medyouf
Leukemia accepted article preview online, 06 December 2017. doi:10.1038/leu.2017.346.
December 6, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/29207175/hypermethylation-of-the-sparc-promoter-and-its-prognostic-value-for-prostate-cancer
#18
Tieshi Liu, Xuefeng Qiu, Xiaozhi Zhao, Rong Yang, Huibo Lian, Feng Qu, Xiaogong Li, Hongqian Guo
Secreted protein acidic and rich in cysteine (SPARC) is a secreted matricellular glycoprotein and plays a key role in the development of many tissues and organ types. However, the role of SPARC in prostate cancer (PCa) is still controversial. The aim of the present study was to investigate the abnormalities in the expression of SPARC and its promoter hypermethylation in prostate cancers and in correlated clinicopathological profiles. We examined the hypermethylation of the SPARC promoter as a potential mechanism for suppressing SPARC in PCa...
November 29, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29196733/regulation-of-hmgb3-by-antitumor-mir-205-5p-inhibits-cancer-cell-aggressiveness-and-is-involved-in-prostate-cancer-pathogenesis
#19
Yasutaka Yamada, Rika Nishikawa, Mayuko Kato, Atsushi Okato, Takayuki Arai, Satoko Kojima, Kazuto Yamazaki, Yukio Naya, Tomohiko Ichikawa, Naohiko Seki
Our recent determination of a microRNA (miRNA) expression signature in prostate cancer (PCa) revealed that miR-205-5p was significantly reduced in PCa tissues and that it acted as an antitumor miRNA. The aim of this study was to identify oncogenic genes and pathways in PCa cells that were regulated by antitumor miR-205-5p. Genome-wide gene expression analyses and in silico miRNA database searches showed that 37 genes were putative targets of miR-205-5p regulation. Among those genes, elevated expression levels of seven in particular (HMGB3, SPARC, MKI67, CENPF, CDK1, RHOU, and POLR2D) were associated with a shorter disease-free survival in a large number of patients in the The Cancer Genome Atlas (TCGA) database...
December 1, 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/29176935/restoration-of-mir-29b-exerts-anti-cancer-effects-on-glioblastoma
#20
Jaekyung Shin, Hyun Geun Shim, Taeyoung Hwang, Hyungsin Kim, Shin-Hyuk Kang, Yun-Sik Dho, Sung-Hye Park, Sang Jeong Kim, Chul-Kee Park
Background: Glioblastoma multiforme (GBM) is known as one of the most fatal forms of cancer. MicroRNAs have been widely implicated in the regulation of mammalian development and pathogenesis. The brain-enriched miR-29 subfamilies are known to be exclusively expressed in the developing brain, and they are aberrantly down-regulated in GBM. This study aims to elucidate the role of miR-29b in GBM development and the feasibility of therapeutic targeting using conjugated nanoparticles. Methods: After confirmation of miR-29b expression levels in GBM tissues by analysis of open source data, the anticancer effect of miR-29b was tested by the introduction of syn-hsa-miR-29b-3p in the A172 GBM cell line...
2017: Cancer Cell International
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