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Babich H - - 2012
A cranberry juice extract (CJE), rich in proanthocyanidins, had weak prooxidant properties, generating low levels of hydrogen peroxide (H(2) O(2) ) and superoxide. Generation of H(2) O(2) was pH dependent, increasing at alkaline pH, and was lowered in the presence of catalase and, to a lesser extent, of superoxide dismutase ...
Kavya K C - - 2012
Chitosan, a natural polymer, is a biomaterial which is known to be osteoconductive but lacking in mechanical strength. In this work, to further enhance the mechanical property and biocompatibility of chitosan, we combined it with both chondroitin sulfate, a natural glycosaminoglycan found in bone, and nano-SiO2. The composite scaffold of ...
Arakaki Makiko - - 2012
Epithelial-mesenchymal interactions regulate the growth and morphogenesis of ectodermal organs such as teeth. Dental pulp stem cells (DPSCs) are a part of dental mesenchyme, derived from the cranial neural crest, and differentiate into dentin forming odontoblasts. However, the interactions between DPSCs and epithelium have not been clearly elucidated. In this ...
Trcek Tatjana T Department of Anatomy and Structural Biology, Albert Einstein College of Medicine, Bronx, New York, - - 2012
Fluorescent in situ hybridization (FISH) allows the quantification of single mRNAs in budding yeast using fluorescently labeled single-stranded DNA probes, a wide-field epifluorescence microscope and a spot-detection algorithm. Fixed yeast cells are attached to coverslips and hybridized with a mixture of FISH probes, each conjugated to several fluorescent dyes. Images ...
Rickelt Steffen - - 2012
Within the characteristic ensemble of desmosomal plaque proteins, the armadillo protein plakophilin-2 (Pkp2) is known as a particularly important regulatory component in the cytoplasmic plaques of various other cell-cell junctions, such as the composite junctions (areae compositae) of the myocardiac intercalated disks and in the variously-sized and -shaped complex junctions ...
Kudo Kentaro - - 2012
Fluorosolvatochromic probes have recently attracted interest for live cell imaging. We recently tested our quinoxaline-based fluorosolvatochromic probes, PQX and MPQX, for in vivo imaging applications. PQX and MPQX are characterized by donor (pyrrole site)-acceptor (quinoxaline site) structure, and the peak emission wavelength of these compounds varies over the visible wavelength ...
Goh Tatsuaki - - 2012
In most dicot plants, lateral root (LR) formation, which is important for the construction of the plant root system, is initiated from coordinated asymmetric cell divisions (ACD) of the primed LR founder cells in the xylem pole pericycle (XPP) of the existing roots. In Arabidopsis thaliana, two AUXIN RESPONSE FACTORs ...
Saha Swati - - 2012
When leu (-) auxotrophs of Escherichia coli, after UV irradiation, were grown at temperatures between 30 and 47°C, the frequency of UV-induced mutation from leu (-) to leu (+) revertant increased as the UV dose and the temperature increased. For cells exposed to a UV dose of 45 J/m(2), the mutation ...
Lee Baek-Hee BH Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN 3723, - - 2012
For cell transplantation into damaged tissues, viable cells must be delivered to the defect site in a suitable carrier. However, the hypoxic and nutrient-limited environment in the carrier can induce massive cell death. The aims of this study were to increase the viability and regulate the behavior of osteoprogenitor cells ...
Imagawa Hiroshi - - 2012
The syntheses of several neovibsanin derivatives were carried out in order to elucidate the simple structure required for displaying neurite outgrowth activity. In addition, a fluorescent probe molecule was synthesized and the analysis of its behavior in the PC12 cell line showed that the neovibsanins accumulate on the outer edge ...
Chávez de Paz Luis E - - 2012
The development of multispecies biofilm models are needed to explain the interactions that take place in root canal biofilms during apical periodontitis. The aim of this study was to investigate the ability of 4 root canal bacteria to establish a multispecies biofilm community and to characterize the main structural, compositional, ...
Kassas Nawal - - 2012
In addition to forming bilayers to separate cellular compartments, lipids participate in vesicular trafficking and signal transduction. Among others, phosphatidic acid (PA) is emerging as an important signaling molecule. The spatiotemporal distribution of cellular PA appears to be tightly regulated by localized synthesis and a rapid metabolism. Although PA has ...
Tsuda Hiromasa - - 2012
Cell death occurs in physiological conditions and as a result of injury or disease. Programmed cell death has an important role in the development and homeostasis of human tissue. Aberrant regulation of this process is thought to cause numerous diseases, including developmental disorders, neurodegenerative disease, and cancer. Apoptosis is the ...
Ono Satoshi - - 2012
We have developed a method of rapidly labeling membrane proteins in living cells using a high-affinity heterodimeric coiled-coil construct containing an E3 tag (EIAALEK)(3) genetically fused to the target protein and a K4 probe (KIAALKE)(4) labeled with a fluorophore such as tetramethylrhodamine (TMR) at its N-terminus (TMR-K4). However, coiled-coil labeling ...
Robert Damien - - 2012
During the last decade, the development of nanomaterials to penetrate inside living cells has been the focus of a large number of studies, with applications for the biomedical field. However, the further dynamics of these nanomaterials inside the cells is dictated by the intracellular environment and in particular its mechanical ...
Cheung Hon-Yeung - - 2012
Chlorhexidine is a chlorinated phenolic disinfectant used commonly in mouthwash for its action against bacteria. However, a comparative study of the action of chlorhexidine on the cell morphology of gram-positive and gram-negative bacteria is lacking. In this study, the actions of chlorhexidine on the cell morphology were identified with the ...
Kagawa Kumiko - - 2012
TNF-related apoptosis-inducing ligand/Apo2 ligand (TRAIL/Apo2L) selectively induces apoptosis in various cancer cells including myeloma (MM) cells. However, the susceptibility of MM cells to TRAIL is largely low in most of MM cells by yet largely unknown mechanisms. Because TNF-α converting enzyme (TACE) can cleave some TNF receptor family members, in ...
Morimoto-Kamata Riyo - - 2012
Neutrophils often invade various tumor tissues and affect tumor progression and metastasis. Cathepsin G (CG) is a serine protease secreted from activated neutrophils. Previously, we have shown that CG induces the formation of E-cadherin-mediated multicellular spheroids of human breast cancer MCF-7 cells; however, the molecular mechanisms involved in this process ...
Ivanova Anastasia O - - 2012
Members of the bacterial phylum Planctomycetes inhabit various aquatic and terrestrial environments. In this study, fluorescence in situ hybridization (FISH) was applied to assess the abundance and depth distribution of these bacteria in nine different acidic wetlands of Northern Russia. Planctomycetes were most abundant in the oxic part of the ...
Wallace Ian S - - 2012
Plant cell walls are composed of interlinked polymer networks consisting of cellulose, hemicelluloses, pectins, proteins, and lignin. The ordered deposition of these components is a dynamic process that critically affects the development and differentiation of plant cells. However, our understanding of cell wall synthesis and remodeling, as well as the ...
Zamora David O DO Department of Regenerative Medicine, United States Army Institute of Surgical Research, - - 2012
Multipotent stem cells have been shown to be extremely useful in the field of regenerative medicine. However, in order to use these cells effectively for tissue regeneration, a number of variables must be taken into account. These variables include: the total volume and surface area of the implantation site, the ...
Lee Ji-Hyun - - 2012
Lee J-H, Lee D-S, Nam H, Lee G, Seo B-M, Cho Y-S, Bae H-S, Park J-C. Dental follicle cells and cementoblasts induce apoptosis of ameloblast-lineage and Hertwig's epithelial root sheath/epithelial rests of Malassez cells through the Fas-Fas ligand pathway. Eur J Oral Sci 2012; 120: 29-37. © 2011 Eur J ...
Carvalho Sandhra M - - 2011
Cementum is a mineralized tissue that lines the surface of the tooth root enabling attachment of the periodontal ligament to the root and surrounding alveolar bone. Studies examining the mechanisms involved in the formation of root cementum have been hindered by an inability to isolate and culture the cells required ...
Zotta T - - 2012
Lactic acid bacteria (LAB) are used as starter or probiotic cultures in the food and pharmaceutical industries and, therefore, rapid and accurate methods for the detection of their viability are of practical relevance. In this study 10 LAB strains, belonging to the genera Enterococcus, Lactococcus, Leuconostoc, Lactobacillus, Streptococcus and Weissella, ...
Kim Wan Gyu - - 2011
Clubroot symptoms were frequently observed on roots of shepherd's-purse (Capsella bursa-pastoris) grown in a field in Nonsan, Chungnam province, Korea in March, 2009. Many resting spores were found in the cells of the root gall tissues collected from the field. The clubroot pathogen was identified as Plasmodiophora brassicae based on ...
Divya Prakash G - - 2011
Shock waves are one of the most competent mechanisms of energy dissipation observed in nature. We have developed a novel device to generate controlled micro-shock waves using an explosive-coated polymer tube. In this study, we harnessed these controlled micro-shock waves to develop a unique bacterial transformation method. The conditions were ...
Egger Boris B Gurdon Institute and Department of Physiology, University of Cambridge, Cambridge, - - 2011
Stem cells proliferate through symmetric division or self-renew through asymmetric division whilst generating differentiating cell types. The balance between symmetric and asymmetric division requires tight control to either expand a stem cell pool or to generate cell diversity. In the Drosophila optic lobe, symmetrically dividing neuroepithelial cells transform into asymmetrically ...
Al-Assar Osama - - 2011
The concept of cancer stem cells is generally accepted in different malignancies. We have previously shown that the MDA-MB231 breast cancer cells were more radiation resistant when sorted for the two stem cell markers CD24 and ESA. In this study, we examined a possible mechanism that might underlie this phenotype ...
Keck Tobias - - 2011
Comment on: Pinho AV, et al. Cell Cycle 2011; 10:1312-21.
Li Hongxia - - 2011
Recent reports have shown that cancer stem cells exist in many malignancies. Side population (SP) cells are used to enrich for cancer stem-like cells in many cell lines and fresh tumor specimens. In this study, we cultured primary esophageal squamous cell carcinoma (ESCC) cells from ESCC tissue specimens. SP cells ...
Morris Lucy X - - 2011
The Drosophila ovariole tip produces new ovarian follicles on a 12-hour cycle by controlling niche-based germline and follicle stem cell divisions and nurturing their developing daughters. Static images provide a thumbnail view of folliculogenesis but imperfectly capture the dynamic cellular interactions that underlie follicle production. We describe a live-imaging culture ...
Selver Ozlëm Barut OB Department of Ophthalmology, Dokuz Eylul University, Izmir, - - 2011
To determine changes in ABCG2-transport-dependent dye exclusion in outgrowths from limbal explants. Human or rabbit limbal strips were deposited onto inserts. Over a month, the segments were twice transferred to new inserts. Fresh tissue (FT) cells, obtained by sequential dispase-trypsin digestion and the cells growing from the explant cultures, were ...
Huang Ruimin R Department of Neurology and Radiology, Memorial Sloan-Kettering Cancer Center, New York, NY 10065, - - 2011
Bioluminescence imaging (BLI) of luciferase reporters provides a cost-effective and sensitive means to image biological processes. However, transport of luciferase substrates across the cell membrane does affect BLI readout intensity from intact living cells. To investigate the effect of ATP-binding cassette (ABC) transporters on BLI readout, we generated click beetle ...
Kosuga Toshiyuki - - 2011
This study aimed to investigate cytocidal effects of hypotonic shock on esophageal squamous cell carcinoma (ESCC) cell lines, and to apply pleural lavage with distilled water to surgery for ESCC. Three human ESCC cell lines, TE5, TE9 and KYSE170 were exposed to distilled water, and morphological changes in ESCC cells ...
Amcheslavsky Alla A University of Massachusetts Medical School, Worcester, MA 01605, - - 2011
Intestinal stem cells (ISCs) in the adult Drosophila melanogaster midgut can respond to damage and support repair. We demonstrate in this paper that the tuberous sclerosis complex (TSC) plays a critical role in balancing ISC growth and division. Previous studies have shown that imaginal disc cells that are mutant for ...
Chan Samantha C W - - 2011
Loading is important to maintain the balance of matrix turnover in the intervertebral disc (IVD). Daily cyclic diurnal assists in the transport of large soluble factors across the IVD and its surrounding circulation and applies direct and indirect stimulus to disc cells. Acute mechanical injury and accumulated overloading, however, could ...
Pistollato Francesca - - 2011
This unit describes a protocol for the surgical collection, isolation, and expansion of regionally defined human glioblastoma multiforme (GBM)-derived cells. Given the important role played by microenvironmental hypoxia in defining cell phenotype and molecular signaling activation, it is important to distinguish between tumor tissues that were originally localized within the ...
Stöckmann Henning - - 2011
Two reagents have been synthesized for selective labeling of cell surface azidoglycans, an unusually stable version of a dibenzocyclooctyne (TMDIBO) and a third-generation difluorinated cyclooctyne (DIFO3). Both syntheses are efficient with minimal purification, and the dibenzocyclooctyne is stable under basic and acidic conditions. Flow cytometric measurements with azidosugar labeled cancer ...
Zeng Xiaowei - - 2011
Recently, we have developed a multiscale soft matter cell model aiming at improving the understanding of mechanotransduction mechanism of stem cells, which is responsible for information exchange between cells and their extracellular environment. In this paper, we report the preliminary results of our research on multiscale modelling and simulation of ...
Favre Mélanie - - 2011
Atomic force microscopy (AFM) investigations of living cells provide new information in both biology and medicine. However, slow cell dynamics and the need for statistically significant sample sizes mean that data collection can be an extremely lengthy process. We address this problem by parallelizing AFM experiments using a two-dimensional cantilever ...
Tumarkin Ethan - - 2011
Co-culture strategies are foundational in cell biology. These systems, which serve as mimics of in vivo tissue niches, are typically poorly defined in terms of cell ratios, local cues and supportive cell-cell interactions. In the stem cell niche, the ability to screen cell-cell interactions and identify local supportive microenvironments has ...
Ohkuma Masahisa - - 2011
BACKGROUND: Although the importance of cancer stem cells (CSCs) in overcoming resistance to therapy and metastasis has recently been reported, the role of CSCs in gastric cancer remains to be elucidated. METHODS: MKN-1 cells were used to study markers of CSCs in gastric adenosquamous carcinoma, as these cells are suitable ...
Umemura Eri - - 2011
The application of cell-biomaterial systems in tissue engineering and regenerative medicine is an important challenge in biomedicine, which preserves not only cells, but also tissue-engineered constructs. In this study, the constructs and cryoprotectant parameters were optimized, and it was evaluated whether the characteristics of dental pulp stem cells (DPSCs), which ...
Epstein Ervin H EH - - 2011
Identification of the cell of origin of cancers is a hot topic, and recently no fewer than five groups have addressed this question for basal cell carcinomas (BCCs) of the skin. In this issue of the JCI, Grachtchouk et al. present evidence from engineered mouse models that at least some ...
Fuente Mora Cristina - - 2011
In this study we have shown that the papilla of the mouse kidney contains a population of Pax2+ cells that are detectable from the early postnatal period through to adulthood. Lineage analysis suggests that some of these Pax2+ cells are derived from the metanephric mesenchyme, a population of progenitor cells ...
Johnson Matthew D - - 2011
ABSTRACT. Many ciliates acquire the capacity for photosynthesis through stealing plastids or harboring intact endosymbiotic algae. Both phenomena are a form of mixotrophy and are widespread among ciliates. Mixotrophic ciliates may be abundant in freshwater and marine ecosystems, sometimes making substantial contributions toward community primary productivity. While mixotrophic ciliates utilize ...
Coradini Danila D Biostatistics for Bioinformatics and Clinical Translational Research, Institute of Medical Statistics and Biometry, University of Milano, 20133 Milano, Italy. - - 2011
Loss of cell-cell adhesion and cell polarity is commonly observed in tumors of epithelial origin and correlates with their invasion into adjacent tissues and formation of metastases. Growing evidence indicates that loss of cell polarity and cell-cell adhesion may also be important in early stage of cancer. In first part ...
Baer Patrick C - - 2011
Adipose-derived stem cells (ASCs) possess a multilineage differentiation potential, can be used from an autologous origin and are, therefore, attractive candidates for clinical applications to repair or regenerate damaged tissues and organs. Adipose tissue as a stem cell source is ubiquitously available and has several advantages compared to other sources. ...
Benton Gabriel - - 2011
Significant advances in our understanding of cancer cell behavior, growth, and metastasis have been facilitated by studies using a basement membrane-like extracellular matrix extract, also known as Matrigel. The basement membrane is a thin extracellular matrix that is found in normal tissues and contacts epithelial and endothelial cells, smooth muscle, ...
Hoffmann Werner - - 2011
Comment on: Singh SR, et al. Cell Cycle 2011; 10: 1109-20.
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