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Results 551 - 600 of 2267
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Cerchia Laura - - 2009
The hope of success of therapeutic interventions largely relies on the possibility to distinguish between even close tumor types with high accuracy. Indeed, in the last ten years a major challenge to predict the responsiveness to a given therapeutic plan has been the identification of tumor specific signatures, with the ...
Li Chunliang - - 2009
Induced pluripotent stem (iPS) cells have attracted enormous attention due to their vast potential in regenerative medicine, pharmaceutical screening and basic research. Most prior established iPS cell lines were derived and maintained on mouse embryonic fibroblast (MEF) cells supplemented with exogenous leukemia inhibitory factor (LIF). Drawbacks of MEF cells impede ...
Moser Joanna J - - 2009
Primary cilia are non-motile sensory cytoplasmic organelles that have been implicated in signal transduction, cell to cell communication, left and right pattern embryonic development, sensation of fluid flow, regulation of calcium levels, mechanosensation, growth factor signaling and cell cycle progression. Defects in the formation and/or function of these structures underlie ...
Lu Ze Jun - - 2009
It is well established that cancer cells can fuse with endothelial cells to form hybrid cells spontaneously, which facilitates cancer cells traversing the endothelial barrier to form metastases. However, up to now, little is known about the biologic characteristics of hybrid cells. Therefore, we investigate the malignant biologic behaviors and ...
Bartelt Rebekah R - - 2009
Human T cells play an important role in pathogen clearance, but their aberrant activation is also linked to numerous diseases. T cells are activated by the concurrent induction of the T cell receptor (TCR) and one or more costimulatory receptors. The characterization of signaling pathways induced by TCR and/or costimulatory ...
Phuchareon Janyaporn - - 2009
Adenoid cystic carcinoma (ACC) is the second most common malignant neoplasm of the salivary glands. Most patients survive more than 5 years after surgery and postoperative radiation therapy. The 10 year survival rate, however, drops to 40%, due to locoregional recurrences and distant metastases. Improving long-term survival in ACC requires ...
Kubo Chikahiro - - 2009
Most in vitro studies of oral carcinogenesis in human cells are carried out with oral keratinocytes immortalized by human papillomavirus type 16 DNA. However, because various etiological factors for oral cancer are known, it is important to establish new human keratinocyte cell lines useful for studying the mechanism of oral ...
Badea Tudor C TC Department of Molecular Biology and Genetics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA. - - 2009
Pharmacologic control of Cre-mediated recombination using tamoxifen-dependent activation of a Cre-estrogen receptor ligand binding domain fusion protein [CreER(T)] is widely used to modify and/or visualize cells in the mouse. We describe here two new mouse lines, constructed by gene targeting to the Rosa26 locus to facilitate Cre-mediated cell modification. These ...
Guo Kun - - 2009
Considerable interests have recently been focused on mechanism of human hepatocellular carcinoma (HCC) metastasis-the most fundamental characteristics of HCC and the ultimate cause of most HCC mortality, so screening more potential early prognostic marker and therapeutic target is urgent. In this study, we screened genome of three HCC cell lines ...
Collet Bertrand - - 2009
TO and SHK-1 are two Atlantic salmon (Salmo salar) cell lines isolated from head kidney cells and used widely in viral diagnostic and fundamental research. Analysis of their resting-state expression levels for a number of immune relevant genes revealed significant differences in expression between the two cell types in the ...
Babrah Jaspreet J Biophotonics Research Group, Gloucestershire Hospitals NHS Foundation Trust, Great Western Road, Gloucester, UK GL1 3NN. - - 2009
This paper presents Fourier transform infrared (FT-IR) spectroscopy to characterise spectral differences that distinguish cells derived from human T-cell lymphoma, B-cell lymphoid, and myeloid leukaemia cell lines. This methodology is based on spectral measurements of major cellular biochemical constituents and multivariate spectral processing. Major spectral differences were observed in the ...
Holthouse David J - - 2009
Medulloblastoma (MB) is the most common type of brain tumor affecting children. These tumors are a significant cause of childhood mortality and morbidity, and more effective and less invasive treatment options are urgently required. To achieve these aims, it will be critical to develop a more comprehensive understanding of the ...
Connolly Kate - - 2009
PURPOSE: To develop a model of X-linked inhibitor of apoptosis (XIAP) down regulation in colorectal cancer cell lines. This may be used to determine whether combination strategies have clinical potential. METHODS: A series of clones were developed using short hairpin RNA (shRNA) against XIAP stably expressed in HCT116 cells. XIAP ...
Xiao Hui - - 2008
The aim was to find the possible relationship between defects in the FA/BRCA pathway of genomic maintenance and potential pathogenesis of T and B cell lymphoma. We screened 29 cell lines derived from diverse subtypes of lymphoma for possible FA pathway defects. The results indicated: no defect in FANCD2 ubiquitination, ...
Pathak Nidhi - - 2009
We have investigated two clonal mouse olfactory placode (OP) cell lines as a model system for studying endogenous odorant receptor (OR) regulation. Both lines can be differentiated into bipolar neurons with transcriptional profiles consistent with mature sensory neurons. We show that single cells exhibit monogenic OR expression like sensory neurons ...
Honda Arata - - 2008
Although embryonic stem (ES) cell lines derived from mice and primates are used extensively, the development of such lines from other mammals is extremely difficult because of their rapid decline in proliferation potential and pluripotency after several passages. This study describes the establishment of rabbit ES cell lines with indefinite ...
Ammerman Nicole C NC Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, Maryland, - - 2008
Vero cells are derived from the kidney of an African green monkey, and are one of the more commonly used mammalian continuous cell lines in microbiology and molecular and cell biology research. This unit includes protocols for the growth and maintenance of Vero cell lines in a research laboratory setting.
Grueneberg Dorre A - - 2008
shRNA loss-of-function screens were used to identify kinases that were rate-limiting for promoting cell proliferation and survival. Here, we study the differences in kinase requirements among various human cells, including freshly prepared primary cells, isogenic cells, immortalized cells, and cancer cell lines. Closely related patterns of kinase requirements among the ...
Vilar E - - 2008
Around 15% of colorectal cancers (CRCs) show microsatellite instability (MSI) due to dysfunction of the mismatch repair system (MMR). As a consequence of this, MSI tumours tend to accumulate errors in mononucleotide repeats as those in genes implicated in repairing double-strand breaks (DSBs). Previous studies have shown that irinotecan (CPT-11), ...
Ning Hongxiu H Knuppe Molecular Urology Laboratory, Department of Urology, School of Medicine, University of California, San Francisco, CA 94143-0738, - - 2009
Adipose tissue-derived stem cells (ADSC) are isolated from the stromal vascular fraction (SVF) of adipose tissue and considered an excellent cell source for regenerative medicine. During the isolation and propagation of several human ADSC cell lines, we observed the emergence of an unusual cell line designated HADSC-6. Although initially fibroblast-like ...
Romano Paolo - - 2009
The Cell Line Data Base (CLDB) is a well-known reference information source on human and animal cell lines including information on more than 6000 cell lines. Main biological features are coded according to controlled vocabularies derived from international lists and taxonomies. HyperCLDB (http://bioinformatics.istge.it/hypercldb/) is a hypertext version of CLDB that ...
Burstein Sumner - - 2008
A series of amide derivatives of long-chain fatty acids has been studied for their effects on the proliferation of cancer cells in vitro. Fatty acids ranged from palmitic to higher polyunsaturated types containing 22 carbon atoms. The amino portions of the molecules included ammonia, ethanolamine, various amino acids and dopamine. ...
Xu Jie - - 2008
Three breast carcinoma cell lines --21PTCi, 21NTCi, and 21MT-1 --all originating from a 36-year-old woman with metastatic breast cancer, have been characterized previously as stably representing different stages of progression: (nontumorigenic [21PTCi]; tumorigenic, nonmetastatic [21NTCi]; and tumorigenic, weakly metastatic [21MT-1]). These cell lines were investigated for cytogenetic characteristics using G-banding ...
Gröger S - - 2008
BACKGROUND AND OBJECTIVE: Primary human keratinocytes are used to analyze the properties of the oral epithelium and the early stages of oral bacterial infections. In vitro, these cells are characterized by their short life span and restricted availability. Approaches for culturing these cells will end after approximately 6-10 passages as ...
Gesundheit Benjamin - - 2008
Three phenotypically distinct cell types are present in human neuroblastomas (NB) and NB cell lines: I-type stem cells, N-type neuroblastic precursors, and S-type Schwannian/melanoblastic precursors. The stimulation of human N-type neuroblastoma cell proliferation by normal human bone marrow monocytic cell conditioned medium (BMCM) has been demonstrated in vitro, a finding ...
Graham D A - - 2008
Laboratory studies were carried out to investigate the cultural characteristics of salmonid alphaviruses (SAV) from Atlantic salmon (AS, Salmo salar) and rainbow trout (RT, Oncorhynchus mykiss), particularly in relation to cell line and temperature. In an initial study, SAV was isolated from 12 viraemic sera and passaged in Chinook salmon ...
Schweppe Rebecca E - - 2008
Cell lines derived from human cancers provide critical tools to study disease mechanisms and develop novel therapies. Recent reports indicate that up to 36% of cell lines are cross- contaminated. We evaluated 40 reported thyroid cancer-derived cell lines using short tandem repeat and single nucleotide polymorphism array analysis. Only 23 ...
Li GuoDong - - 2009
Generating surrogate insulin-producing cells from embryonic stem cells (ESCs) through in vitro replication of successive steps during pancreatic development has been challenging . Here we describe a novel reproducible protocol to establish homogeneous and scalable insulin-producing cell lines from mouse (m) ESCs via differentiation of the previously described lineage-restricted clonal ...
Yanagihara Kazuyoshi - - 2008
Ten novel human pancreatic carcinoma cell lines (Sui65 through Sui74) were established from a transplantable pancreatic carcinoma cell line. All the cell lines resembled the original clinical carcinoma in terms of the morphological and biological features, presenting with genetic alterations such as point mutations of K-ras and p53, attenuation or ...
Sun, LuZhe
Bone metastasis is one of the major causes of morbidity and mortality in breast cancer (BC) patients. However, only a few human BC cell lines can efficiently metastasize to bone whereas most BC cell lines cannot. Recently, it was shown that systemic administration of the conditioned medium by a melanoma ...
Li GuoDong - - 2009
We have previously described the derivation of insulin-producing cell lines from mouse embryonic stem cells (mESCs) by differentiation of an intermediate lineage-restricted E-RoSH cell line through nutrient depletion in the presence of nicotinamide followed by limiting dilution. Here we investigated whether insulin-producing cell lines could be similarly derived directly from ...
Jim, LaWanda
Hyperglycosylated human chorionic gonadotropin (hCG-H), a variant of hCG, has been shown to promote the growth and invasion of trophoblast cells in early pregnancy placental implantation, choriocarcinoma and testicular germ cell malignancies. In a previous study (15), hCG-H was found to have a significant effect on the growth of a ...
Volokhov Dmitriy V - - 2008
In this study, we describe our results on the evaluation of the ability of different permissive mammalian cell lines to support the biological enrichment of mycoplasma species known to be bacterial contaminants of cell substrates. The study showed that this approach is able to significantly improve the efficiency of mycoplasma ...
Liu Merry - - 2008
Animal cell lines are important resources for research and diagnostic applications. Cross-contamination and misidentification of cell lines, however, can cause major problems for research (for example, false results that come from contamination cells may mislead the science). Hence, it is imperative to routinely monitor cell lines for identity and authenticity. ...
Gertz Morie - - 2008
In this issue of Leukemia Research, Drexler and MacLeod raise questions about the origins of cell lines used in the study of Waldenström's macroglobulinemia and suggest caution in the use of these cell lines as models of this disease [Drexler HG, Macleod RAF. Malignant hematopoietic cell lines: in vitro models ...
Drexler Hans G - - 2008
Model cell lines are essential tools for investigating the biology and therapeutics of cancer. Approximately 1500 human hematopoietic neoplastic cell lines have been described, covering most major disease entities. Waldenström's macroglobulinemia (WM) is a rare incurable hematological neoplasm from which only three cell lines have been derived. Mindful that candidate ...
Selicharova Irena - - 2008
Human MDA-MB-231 derived breast cancer cell lines 1833 and 4175 have different metastatic potentials in terms of their tissue tropisms and aggressiveness. Cell line 1833 is specifically metastatic to the bone. The highly aggressive cell line 4175 is specific to the lung. We performed 2-DE analysis of the cell lines. ...
Nasir Idrees Ahmad - - 2008
Cormels pieces of four Fusarium susceptible Gladiolus cultivars (Friendship, Peter Pears, Victor Borge and Novalux) formed friable calli when cultured in vitro on Murashige and Skoog basal medium containing various concentrations of auxin and cytokinin. The friable calli established cell suspensions. Plantlet regeneration was obtained from the control callus, control ...
Xu Li-Ning LN Institute of Hepatobiliary Surgery of PLA General Hospital, Beijing 100853, China. - - 2008
To explore the effect of histone deacetylase inhibitor, trichostatin A (TSA) on the growth of biliary tract cancer cell lines (gallbladder carcinoma cell line and cholangiocarcinoma cell line) in vivo and in vitro, and to investigate the perspective of histone deacetylase inhibitor in its clinical application. The survival rates of ...
Healy Lyn E - - 2008
In the 10 years that the technology to produce human embryonic stem cell lines has been available, hundreds of lines have been derived in numerous global locations. These cell lines are being used by researchers across diverse scientific fields to investigate the basic biology, clinical potential, and pharmaceutical applications of ...
Svechnikova Irina - - 2008
The anti-neoplastic effects of histone deacetylase inhibitors (HDACi), Trichostatin A (TSA) and 4-phenylbutyrate (4-PB) on the human glioblastoma cell lines GBM-29, U-343 MG and U-343 MGa Cl. 2:6 were investigated. TSA and 4-PB induced apoptosis in the three cell lines in a dose- and time-dependent manner. Whereas caspase-3 activation was ...
Andrijevic Lj - - 2008
PURPOSE: Due to a lack of chemotherapeutics to efficiently control neoplastic processes, there is a need for discovering new, more efficient anticancer drugs that would distinguish malignant from normal cells. MATERIALS AND METHODS: We studied the effect of short (4 h) and long (72 h) treatment with different concentrations of ...
Sirica Alphonse E AE Division of Cellular and Molecular Pathogenesis, Department of Pathology, Virginia Commonwealth University School of Medicine, Richmond, VA 23298-0297, USA. - - 2008
Intrahepatic cholangiocarcinoma typically presents in an advanced stage in which treatment options are limited. In an effort to recapitulate key biological and clinical features of the progressive disease, we established a novel rat model based on bile duct inoculation of rat cholangiocyte cell lines in different stages of tumor progression. ...
Koren Simon - - 2008
Cross-contamination and misidentification of various cell lines is a widespread problem that can lead to spurious scientific conclusions. DNA fingerprinting is a powerful identification technique, which can be effectively used for the authentication of human cell lines. In contrast to human cancer cell lines, little attention has so far been ...
Gomase Virendra S - - 2008
Work on human immortalized cell lines is not considered research on human subjects, but does involve biohazards. It has also been estimated that about 80% of human cell lines are the kind of cells that they are expected. Cells that are cultured directly from a subject are referred to as ...
Zhao Shuo - - 2008
Sec14p-like lipid-binding domain (SEC14 domain) is an evolutionarily conserved protein domain often found in secretory proteins, such as Saccharomyces cerevisiae phosphatidylinositol transfer protein Sec14p, and in lipid-regulated proteins, such as GTPase-activating proteins, guanine nucleotide exchange factors, and neurofibromin. We have cloned a novel human gene, cellular retinaldehyde-binding protein-like (CRALBPL), containing ...
Kawamoto Teruya T Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Chuo-ku, Kobe, Hyogo, - - 2008
PKC412, formerly CGP41251, N-benzoylstaurosporine, was initially developed as a selective protein kinase C (PKC) inhibitor, and it preferentially inhibits conventional PKC family members. In this study, the expression of PKCa was examined in human osteosarcoma and MFH cell lines, and the inhibitory effect of PKC412 on the proliferation of the ...
Rohatgi Rajeev - - 2008
Mutations of cilia-expressed proteins are associated with an attenuated shear-induced increase in intracellular Ca(2+) concentration ([Ca(2+)](i)) in renal epithelial cell lines derived from murine models of autosomal recessive polycystic kidney disease (ARPKD). We hypothesized that human ARPKD cyst-lining renal epithelial cells also exhibited dysregulated mechanosensation. To test this, conditionally immortalized ...
Qu, Junge
The inherent instability of metabolite production in plant cell culture-based bioprocessing is a major problem hindering its commercialization. To understand the extent and causes of this instability, this study was aimed at understanding the variability of anthocyanin accumulation during long-term subcultures, as well as within subculture batches, in Vitis vinifera ...
Zhang Yandong - - 2009
A series of 2,3-disubstituted 8-arylamino-3H-imidazo[4,5-g]quinazolines were synthesized and evaluated for their cytotoxic activity in vitro against five human cancer cell lines (human lung carcinoma cell line: A549, human leukemia cell lines: K562 and Molt-4, human prostate cancer cell line: PC-3, human breast carcinoma cell line: MDA-MB-231). Most of these compounds ...
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