Search results for " migration"

Translation and Migration in Leila Aboulela’s The Translator and Monica Ali’s Brick Lane

2010

This study focuses on the relationship between translation and migration in a postcolonial text produced by an immigrant African novelist who experiences culture shock, exile and resistance to the host country.

Muscle repair after physiological damage relies on nuclear migration for cellular reconstruction

2021

Muscle repair without stem cells Skeletal muscle is a mechanical organ that endures cellular damage after contraction. Lesions caused by external injury can be repaired by muscle stem cells, which fuse with injured cells or create entirely new myofibers. Roman et al . describe a cell-autonomous repair process that is independent of muscle stem cells (see the Perspective by McNally and Demonbreun). After localized damage, myonuclei migrate to injury sites and locally deliver messenger RNA for cellular reconstruction. This myofiber self-repair represents a model for understanding the restoration of muscle architecture in health and disease. —BAP

Abstract 1993: Fishing for artemisinin-interacting proteins from human nasopharyngeal cancer cells

2012

Abstract Determining cellular target molecules of drugs by chemical proteomic techniques is complex and tedious. Most approaches rely on activity-based probe profiling and compound-centric chemical proteomics. The antimalarial artemisinin also exerts profound anti-cancer activity, but the mechanisms of action are incompletely understood. In the present study, we have identified artemisinin-interacting target proteins from human nasopharyngeal carcinoma cell line CNE1. Thereby, our approach overcomes usual problems in traditional fishing procedures, because the drug was attached to a polystyrene surface without further chemical modification. Using mass spectrometry we have identified 20 prot…

Migration of renal carcinoma cells is dependent on protein kinase Cδ via β1 integrin and focal adhesion kinase

2008

Migration and adhesion of tumor cells are essential prerequisites for the formation of metastases in malignant diseases. Protein kinase C (PKC) has been shown to regulate cell migration, adhesion and proliferation. In order to identify a connection between PKC isoforms and tumor progression in renal cell carcinoma (RCC), the influence of PKC isoforms on cell migration, adhesion and proliferation and possible influences of the activity of integrins and focal adhesion kinase (FAK) were analyzed in RCC cells. The experiments were performed in the RCC cell line CCF-RC1 after pre-incubation of the cells with the PKC inhibitors GF109203X, GO6976, RO31-8220 and rottlerin. Cell migration and adhesi…

IL1β Induces Mesenchymal Stem Cells Migration and Leucocyte Chemotaxis Through NF-κB

2012

Mesenchymal stem cells are often transplanted into inflammatory environments where they are able to survive and modulate host immune responses through a poorly understood mechanism. In this paper we analyzed the responses of MSC to IL-1β: a representative inflammatory mediator. Microarray analysis of MSC treated with IL-1β revealed that this cytokine activateds a set of genes related to biological processes such as cell survival, cell migration, cell adhesion, chemokine production, induction of angiogenesis and modulation of the immune response. Further more detailed analysis by real-time PCR and functional assays revealed that IL-1β mainly increaseds the production of chemokines such as CC…

Lactate enhances motility of tumor cells and inhibits monocyte migration and cytokine release.

2011

In solid malignant tumors, lactate has been identified as a prognostic parameter for metastasis and overall survival of patients. To investigate the effects of lactate on tumor cell migration, Boyden chamber assays were applied. We could show here that lactate enhances tumor cell motility of head and neck carcinoma cell lines significantly in a dose-dependent manner. The changes in tumor cell migration could be attributed to L-lactate or a conversion of lactate to pyruvate, as only these two substances were able to increase migration. Addition of D-lactate or changes in osmolarity or intracellular pH did not alter the migratory potential of the cells investigated. Because lactate was shown …

Expression of Hugl-1 is strongly reduced in malignant melanoma.

2005

The human gene Hugl-1 (Llgl/Lgl1) has significant homology to the Drosophila tumor suppressor gene lethal(2)giant larvae (lgl). The lgl gene codes for a cortical cytoskeleton protein, Lgl, that is involved in maintaining cell polarity and epithelial integrity. We speculate that Hugl-1 might play a role in epithelial-mesenchymal transition (EMT) and that loss of Hugl-1 expression plays a role in the development or progression of malignant melanoma. Thus, we evaluated melanoma cell lines and tissue samples of malignant melanoma for loss of Hugl-1 transcription. We found that Hugl-1 was downregulated or lost in all cell lines and in most of the tumor samples analysed, and that these losses wer…

The protease complex consisting of dipeptidyl peptidase IV and seprase plays a role in the migration and invasion of human endothelial cells in colla…

2006

Abstract Dipeptidyl peptidase IV (DPP4/CD26) and seprase/fibroblast activation protein α are homologous type II transmembrane, homodimeric glycoproteins that exhibit unique prolyl peptidase activities. Human DPP4 is ubiquitously expressed in epithelial and endothelial cells and serves multiple functions in cleaving the penultimate positioned prolyl bonds at the NH2 terminus of a variety of physiologically important peptides in the circulation. Recent studies showed a linkage between DPP4 and down-regulation of certain chemokines and mitogenic growth factors, and degradation of denatured collagens (gelatin), suggesting a role of DPP4 in the cell invasive phenotype. Here, we found the existen…

823: 3-deazaneplanocin A (DZNep), an inhibitor of histone methyltransferase EZH2, induces apoptosis and reduces cell migration in chondrosarcoma cells

2014

Tracheal development and the von Hippel-Lindau tumor suppressor homolog in Drosophila.

2000

von Hippel-Lindau disease is a hereditary cancer syndrome. Mutations in the VHL tumor suppressor gene predispose individuals to highly vascularized tumors. However, VHL-deficient mice die in utero due to a lack of vascularization in the placenta. To resolve the contradiction, we cloned the Drosophila VHL homologue (d-VHL) and studied its function. It showed an overall 50% similarity to the human counterpart and 76% similarity in the crucial functional domain: the elongin C binding site. The putative d-VHL protein can bind Drosophila elongin C in vitro. During embryogenesis, d-VHL is expressed in the developing tracheal regions where tube outgrowth no longer occurs. Reduced d-VHL activity (u…