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https://www.readbyqxmd.com/read/29786793/a-method-for-prostate-and-breast-cancer-cell-spheroid-cultures-using-gelatin-methacryloyl-based-hydrogels
#1
Christoph Meinert, Christina Theodoropoulos, Travis J Klein, Dietmar W Hutmacher, Daniela Loessner
Modern tissue engineering technologies have delivered tools to recreate a cell's naturally occurring niche in vitro and to investigate normal and pathological cell-cell and cell-niche interactions. Hydrogel biomaterials mimic crucial properties of native extracellular matrices, including mechanical support, cell adhesion sites and proteolytic degradability. As such, they are applied as 3D cell culture platforms to replicate tissue-like architectures observed in vivo, allowing physiologically relevant cell behaviors...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29786787/protocols-for-migration-and-invasion-studies-in-prostate-cancer
#2
Arjanneke F van de Merbel, Geertje van der Horst, Jeroen T Buijs, Gabri van der Pluijm
Prostate cancer is the most common malignancy diagnosed in men in the western world. The development of distant metastases and therapy resistance are major clinical problems in the management of prostate cancer patients. In order for prostate cancer to metastasize to distant sites in the human body, prostate cancer cells have to migrate and invade neighboring tissue. Cancer cells can acquire a migratory and invasive phenotype in several ways, including single cell and collective migration. As a requisite for migration, epithelial prostate cancer cells often need to acquire a motile, mesenchymal-like phenotype...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29786707/biocompatible-alkyl-cyanoacrylates-and-their-derivatives-as-bio-adhesives
#3
REVIEW
Jay M Korde, Balasubramanian Kandasubramanian
Cyanoacrylate adhesives and their homologues have elicited interest over the past few decades owing to their applications in the biomedical sector, extending from tissue adhesives to scaffolds to implants to dental material and adhesives, because of their inherent biocompatibility and ability to polymerize solely with moisture, thanks to which they adhere to any substrate containing moisture such as the skin. The ability to tailor formulations of alkyl cyanoacrylate to form derivative compounds to meet application requirements along with their biodegradability in conjunction with their inherent biocompatibility make them highly sought after candidates in the biomedical sector...
May 22, 2018: Biomaterials Science
https://www.readbyqxmd.com/read/29784667/pattern-specific-transcriptomics-identifies-asgr2-as-a-predictor-of-hematogenous-recurrence-of-gastric-cancer
#4
Haruyoshi Tanaka, Mitsuro Kanda, Takashi Miwa, Chie Tanaka, Daisuke Kobayashi, Shinichi Umeda, Masahiro Shibata, Masaya Suenaga, Norifumi Hattori, Masamichi Hayashi, Naoki Iwata, Suguru Yamada, Goro Nakayama, Michitaka Fujiwara, Yasuhiro Kodera
Hematogenous recurrence is a challenging clinical finding that often leads to fatalities of patients with gastric cancer. Therefore, the identification of specific biomarkers and potential therapeutic target molecules for hematogenous recurrence is required to improve the outcomes of these patients. Here, transcriptome and bioinformatics analyses were conducted to uncover candidate molecules differentially expressed in patients with hematogenous recurrence of gastric cancer. One potential candidate identified was asialoglycoprotein receptor 2 (ASGR2) and small interfering RNA (siRNA) experiments were conducted to determine the effect of manipulating ASGR2 expression has on cell phenotypes...
May 21, 2018: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/29784595/comparative-proteome-analysis-of-the-capsule-from-patients-with-frozen-shoulder
#5
Yoshihiro Hagiwara, Masaru Mori, Kenji Kanazawa, Akira Ando, Yutaka Yabe, Masashi Koide, Takuya Sekiguchi, Nobuyuki Itaya, Masahiro Tsuchiya, Eiji Itoi
BACKGROUND: The etiology of frozen shoulder (FS) is unclear. Accordingly, this study used a label-free quantitative shotgun proteomic approach to elucidate the pathogenesis of FS based on protein expression levels. METHODS: Tissue samples from the rotator interval (RI), middle glenohumeral ligament (MGHL), and anterior-inferior glenohumeral ligament (IGHL) were collected from 12 FSs with severe stiffness and 7 shoulders with a rotator cuff tear (RCT) as controls...
May 18, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29784011/extremely-low-frequency-electromagnetic-fields-promote-mesenchymal-stem-cell-migration-by-increasing-intracellular-ca-2-and-activating-the-fak-rho-gtpases-signaling-pathways-in-vitro
#6
Yingchi Zhang, Jiyuan Yan, Haoran Xu, Yong Yang, Wenkai Li, Hua Wu, Chaoxu Liu
BACKGROUND: The ability of mesenchymal stem cells (MSCs) to migrate to the desired tissues or lesions is crucial for stem cell-based regenerative medicine and tissue engineering. Optimal therapeutics for promoting MSC migration are expected to become an effective means for tissue regeneration. Electromagnetic fields (EMF), as a noninvasive therapy, can cause a lot of biological changes in MSCs. However, whether EMF can promote MSC migration has not yet been reported. METHODS: We evaluated the effects of EMF on cell migration in human bone marrow-derived MSCs...
May 21, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29783786/graphene-based-nanomaterials-for-tissue-engineering-in-the-dental-field
#7
REVIEW
Riccardo Guazzo, Chiara Gardin, Gloria Bellin, Luca Sbricoli, Letizia Ferroni, Francesco Saverio Ludovichetti, Adriano Piattelli, Iulian Antoniac, Eriberto Bressan, Barbara Zavan
The world of dentistry is approaching graphene-based nanomaterials as substitutes for tissue engineering. Apart from its exceptional mechanical strength, electrical conductivity and thermal stability, graphene and its derivatives can be functionalized with several bioactive molecules. They can also be incorporated into different scaffolds used in regenerative dentistry, generating nanocomposites with improved characteristics. This review presents the state of the art of graphene-based nanomaterial applications in the dental field...
May 20, 2018: Nanomaterials
https://www.readbyqxmd.com/read/29783695/application-of-a-novel-anti-adhesive-membrane-e8002-in-a-rat-laminectomy-model
#8
Kiyoshi Kikuchi, Kentaro Setoyama, Takuto Terashi, Megumi Sumizono, Salunya Tancharoen, Shotaro Otsuka, Seiya Takada, Kazuki Nakanishi, Koki Ueda, Harutoshi Sakakima, Ko-Ichi Kawahara, Ikuro Maruyama, Gohsuke Hattori, Motohiro Morioka, Eiichiro Tanaka, Hisaaki Uchikado
Neuropathic pain after spinal surgery, so-called failed back surgery syndrome, is a frequently observed common complication. One cause of the pain is scar tissue formation, observed as post-surgical epidural adhesions. These adhesions may compress surrounding spinal nerves, resulting in pain, even after successful spinal surgery. E8002 is an anti-adhesive membrane. In Japan, a clinical trial of E8002 is currently ongoing in patients undergoing abdominal surgery. However, animal experiments have not been performed for E8002 in spinal surgery...
May 18, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29782466/mucin-expression-in-colorectal-cancer-crc-systematic-review-and-meta-analysis
#9
Yaron Niv, Theodore Rokkas
BACKGROUND: A body of evidence has suggested that mucins play an important role in adhesion, invasion, and cancer metastasis. However, this evidence is scarce and sometimes confusing. OBJECTIVE: We performed a systematic review and meta-analysis of available studies to better define the role of mucins in the behavior of colorectal cancer (CRC). METHODS: Medical literature was searched through November 30, 2017, using suitable keywords. Pooled estimates, that is, odd ratios (ORs), were obtained using fixed or random-effects models, as appropriate...
May 18, 2018: Journal of Clinical Gastroenterology
https://www.readbyqxmd.com/read/29782336/a-review-of-small-incision-lenticule-extraction-complications
#10
Ronald R Krueger, Caio S Meister
PURPOSE OF REVIEW: As a flapless procedure, SMILE brings benefits to refractive surgery, such as lower corneal biomechanical impact, less dry eye risk and less stromal bed exposure. However, the longer learning curve can be a risk factor for complications. This article aims to discuss SMILE complications and proposes a categorized analysis of occurrences, dividing into two groups: intraoperative and postoperative complications. Among intraoperative, we also suggest a subdivision between those related to the laser (lenticule construction), tissue separation (lenticule dissection) and tissue removal (lenticule extraction)...
May 17, 2018: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/29782010/isolation-of-mesenchymal-stem-cells-from-human-alveolar-periosteum-and-effects-of-vitamin-d-on-osteogenic-activity-of-periosteum-derived-cells
#11
Yen-Li Wang, Adrienne Hong, Tzung-Hai Yen, Hsiang-Hsi Hong
Mesenchymal stem cells (MSCs) are present in a variety of tissues and can be differentiated into numerous cell types, including osteoblasts. Among the dental sources of MSCs, the periosteum is an easily accessible tissue, which has been identified to contain MSCs in the cambium layer. However, this source has not yet been widely studied. Vitamin D3 and 1,25-(OH)2D3 have been demonstrated to stimulate in vitro differentiation of MSCs into osteoblasts. In addition, vitamin C facilitates collagen formation and bone cell growth...
May 4, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29780806/myeloperoxidase-negatively-regulates-neutrophil-endothelial-cell-interactions-by-impairing-%C3%AE-m%C3%AE-2-integrin-function-in-sterile-inflammation
#12
Alan Tseng, Kyungho Kim, Jing Li, Jaehyung Cho
Interactions of neutrophils with endothelial cells (ECs) and platelets contribute to tissue damage and vascular occlusion under sterile inflammatory conditions. However, the molecular mechanisms regulating the cell-cell interactions remain poorly understood. Previous studies suggest that reactive oxygen species, such as hydrogen peroxide (H2 O2 ), produced from NADPH oxidase 2 play a critical role in platelet-neutrophil interactions by regulating the function of neutrophil αMβ2 integrin during sterile inflammation...
2018: Frontiers in Medicine
https://www.readbyqxmd.com/read/29780748/cell-adhesion-and-matrix-stiffness-coordinating-cancer-cell-invasion-and-metastasis
#13
REVIEW
Vasiliki Gkretsi, Triantafyllos Stylianopoulos
Metastasis is a multistep process in which tumor extracellular matrix (ECM) and cancer cell cytoskeleton interactions are pivotal. ECM is connected, through integrins, to the cell's adhesome at cell-ECM adhesion sites and through them to the actin cytoskeleton and various downstream signaling pathways that enable the cell to respond to external stimuli in a coordinated manner. Cues from cell-adhesion proteins are fundamental for defining the invasive potential of cancer cells, and many of these proteins have been proposed as potent targets for inhibiting cancer cell invasion and thus, metastasis...
2018: Frontiers in Oncology
https://www.readbyqxmd.com/read/29779099/the-differential-expression-of-adhesion-molecule-and-extracellular-matrix-genes-in-mesenchymal-stromal-cells-after-interaction-with-cord-blood-hematopoietic-progenitors
#14
L B Buravkova, E R Andreeva, M V Lobanova, E V Cotnezova, A I Grigoriev
The dynamics of the expression of genes encoding adhesion molecules, molecules of the connective tissue matrix, and its remodeling enzymes was studied in multipotent mesenchymal stromal cells (MSCs) from human adipose tissue after interaction with cord blood hematopoietic progenitors (HSPCs). An upregulation of ICAM1 and VCAM1, directly proportional to the coculture time (24-72 h), was found. After 72 h of culturing, a downregulation of the genes encoding the majority of matrix molecules (SPP1; COL6A2,7A1; MMP1,3; TIMP1,3; and HAS1) and cell-matrix adhesion molecules (ITGs) was revealed...
March 2018: Doklady. Biochemistry and Biophysics
https://www.readbyqxmd.com/read/29777904/axed-muc4-muc4-x-aggravates-pancreatic-malignant-phenotype-by-activating-integrin-%C3%AE-1-fak-erk-pathway
#15
Rahat Jahan, Muzafar A Macha, Satyanarayana Rachaghani, Srustidhar Das, Lynette M Smith, Sukhwinder Kaur, Surinder K Batra
Alternative splicing is evolving as an eminent player of oncogenic signaling for tumor development and progression. Mucin 4 (MUC4), a type I membrane-bound mucin, is differentially expressed in pancreatic cancer (PC) and plays a critical role in its progression and metastasis. However, the molecular implications of MUC4 splice variants during disease pathogenesis remain obscure. The present study delineates the pathological and molecular significance of a unique splice variant of MUC4, MUC4/X, which lacks the largest and polymorphic exon 2, along with exon 3...
May 16, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29777589/low-adhesive-ethylene-vinyl-alcohol-based-packaging-to-xenogeneic-islets-encapsulation-for-type-1-diabetes-treatment
#16
Kai-Chiang Yang, Goichi Yanai, Sin-Yu Yang, Priyadarshini Canning, Yoshio Satou, Masako Kawagoe, Shoichiro Sumi
Transplantation of encapsulated porcine islets is proposed to treat type 1 diabetes. However, envelopment of fibrous tissue and infiltration of immune cells impair islets function and eventually cause implant failure. It is known that hemodialysis using an ethylene vinyl alcohol (EVOH) membrane results in minor tissue responses. Therefore, we hypothesized that using a low adhesive EVOH membrane for encapsulation may prevent host cell accumulation and fibrous capsule formation. In this study, rat islets suspended in chitosan gel were encapsulated in bags made from highly porous EVOH membranes, and their in vitro insulin secretion function as well as in vivo performance were evaluated...
May 19, 2018: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/29777326/sirolimus-coated-poly-l-lactic-acid-modified-polypropylene-mesh-with-minimal-intra-peritoneal-adhesion-formation-in-a-rat-model
#17
S Lu, W Hu, Z Zhang, Z Ji, T Zhang
PURPOSE: This study evaluated the manufacturing method and anti-adhesion properties of a new composite mesh in the rat model, which was made from sirolimus (SRL) grafts on a poly(L-lactic acid) (PLLA)-modified polypropylene (PP) hernia mesh. METHODS: PLLA was first grafted onto argon-plasma-treated native PP mesh through catalysis of stannous chloride. SRL was grafted onto the surface of PP-PLLA meshes using catalysis of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDC) and 4-dimethylaminopyridine (DMAP) in a CH2 Cl2 solvent...
May 18, 2018: Hernia: the Journal of Hernias and Abdominal Wall Surgery
https://www.readbyqxmd.com/read/29776611/nasal-delivery-of-chitosan-alginate-nanoparticle-encapsulated-bee-apis-mellifera-venom-promotes-antibody-production-and-viral-clearance-during-porcine-reproductive-and-respiratory-syndrome-virus-infection-by-modulating-t-cell-related-responses
#18
Jina Lee, Yun-Mi Kim, Ju-Heon Kim, Cheong-Weon Cho, Jong-Woon Jeon, Jin-Kyu Park, Sang-Ho Lee, Bock-Gie Jung, Bong-Joo Lee
In this study, we administered specially developed chitosan/alginate nanoparticle encapsulated BV (CH/AL-BV) which has slow-releasing properties and mucosal adhesiveness to pig via nasal route and evaluate whether it can facilitate systemic immune response and improve clearance of porcine reproductive and respiratory syndrome virus (PRRSV). The CH/AL-BV-administered group with PRRSV vaccination showed significantly enhanced Th1-related responses including a high population of CD4+ T lymphocyte and cytokine mRNA levels including interferon-gamma (IFN-γ) and interleukin (IL)-12 and increased PRRSV-specific IgG levels...
June 2018: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/29775430/gene-expression-profile-analysis-of-aortic-vascular-smooth-muscle-cells-reveals-upregulation-of-cadherin-genes-in-myocardial-infarction-patients
#19
Anselm A Derda, Chin Cheng Woo, Thidathip Wongsurawat, Mark Richards, Chuen Neng Lee, Theo Kofidis, Vladimir A Kuznetsov, Vitaly A Sorokin
Myocardial infarction (MI) induced by acute coronary arterial occlusion is usually secondary to atherosclerotic plaque rupture. Dysregulated response of vascular smooth muscle cells (VSMCs) in atherosclerotic plaques may promote plaque rupture. Cadherins (CDHs) form adherens junctions and are known stabilizers of atherosclerotic plaques. To date, the expression patterns of cadherin have not been well investigated in MI aortic VSMCs. We aimed to investigate the expression of cadherin genes in the aortic wall of patients with and without MI...
May 18, 2018: Physiological Genomics
https://www.readbyqxmd.com/read/29773994/biological-roles-of-aberrantly-expressed-glycosphingolipids-and-related-enzymes-in-human-cancer-development-and-progression
#20
REVIEW
Dinghao Zhuo, Xiang Li, Feng Guan
Glycosphingolipids (GSLs), which consist of a hydrophobic ceramide backbone and a hydrophilic carbohydrate residue, are an important type of glycolipid expressed in surface membranes of all animal cells. GSLs play essential roles in maintenance of plasma membrane stability, in regulation of numerous cellular processes (including adhesion, proliferation, apoptosis, and recognition), and in modulation of signal transduction pathways. GSLs have traditionally been classified as ganglio-series, lacto-series, or globo-series on the basis of their diverse types of oligosaccharide chains...
2018: Frontiers in Physiology
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