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4783 results sorted by

A serine protease inhibitor prevents endoplasmic reticulum stress-induced cleavage but not transport of the membrane-bound transcription factor ATF6

Mammalian cells express several transcription factors embedded in the endoplasmic reticulum (ER) as transmembrane proteins that are activated by proteolysis, and two types of these proteins have been extensively investigated. One type comprises the...
Authors: Okada T, Haze K, Nadanaka S, Yoshida H, Seidah NG, Hirano Y, Sato R, Negishi M and Mori K

Efficient transfection method for primary cells

Transfection of primary cells and stem cells is a problem in the laboratory routine and further in tissue engineering and gene therapy. Most methods working effectively for cell lines in culture fail to transfect primary cells. Here we describe the...
Authors: Hamm A, Krott N, Breibach I, Blindt R and Bosserhoff AK

Human dendritic cells genetically engineered to express cytosolically retained fragment of prostate-specific membrane antigen prime cytotoxic T-cell responses to multiple epitopes

The ability of two plasmid DNA vaccines to stimulate lymphocytes from normal human donors and to generate antigen-specific responses is demonstrated. The first vaccine (truncated; tPSMA) encodes for only the extracellular domain of prostate-specific...
Authors: Mincheff M, Zoubak S, Altankova I, Tchakarov S, Makogonenko Y, Botev C, Ignatova I, Dimitrov R,...

Inhibition of constitutive NF-kappaB activation in mantle cell lymphoma B cell lead to induction of cell cycle arrest and apoptosis

Constitutive activation of the NF-kappaB has been documented to be involved in the pathogenesis of many human malignancies, including hemopoietic neoplasms. In this study, we examined the status of NF-kappaB in two non-Hodgkin's lymphoma cell lines...
Authors: Pham LV, Tamayo AT, Yoshimura LC, Lo P and Ford RJ

Weibel-Palade bodies recruit Rab27 by a content-driven, maturation-dependent mechanism that is independent of cell type

The identification of organelles is crucial for efficient cellular function, yet the basic underlying mechanisms by which this might occur have not been established. One group of proteins likely to be central to organelle identity is the Rab family...
Authors: Hannah MJ, Hume AN, Arribas M, Williams R, Hewlett LJ, Seabra MC and Cutler DF

The immunosuppressant rapamycin represses human immunodeficiency virus type 1 replication

The immunosuppressive macrolide rapamycin is used in humans to prevent graft rejection. This drug acts by selectively repressing the translation of proteins that are encoded by an mRNA bearing a 5'-polypyrimidine tract (e.g., ribosomal proteins,...
Authors: Roy J, Paquette JS, Fortin JF and Tremblay MJ

c-Myc degradation induced by DNA damage results in apoptosis of CHO cells

Although tripchlorolide (TC), a compound purified from a Chinese herb Tripterygium Wilfordii Hook, has been demonstrated to be a potent antitumor agent, its mechanisms of action are unknown. The present study shows that TC induces apoptosis of...
Authors: Jiang MR, Li YC, Yang Y and Wu JR

Imaging antigen-induced PI3K activation in T cells

Imaging antigen-induced PI3K activation in T cells. Harriague J, Bismuth G. Departement de Biologie Cellulaire, Institut Cochin, INSERM U567, CNRS UMR 7627, Universite Rene Descartes, 22 rue Mechain, 75014 Paris, France. Activation of...
Authors: Harriague J and Bismuth G

Fas-associated Factor 1, FAF1, is a member of fas death-inducing signaling complex

FAF1 has been introduced as a Fas-binding protein. However, the function of FAF1 in apoptotic execution is not established. Based on the fact that FAF1 is a Fas-binding protein, we asked if FAF1 interacted with other members of the Fas-death-inducing...
Authors: Ryu SW, Lee SJ, Park MY, Jun JI, Jung YK and Kim E

Dynamic redistribution of raft domains as an organizing platform for signaling during cell chemotaxis

Spatially restricted activation of signaling molecules governs critical aspects of cell migration; the mechanism by which this is achieved nonetheless remains unknown. Using time-lapse confocal microscopy, we analyzed dynamic redistribution of lipid...
Authors: Gomez-Mouton C, Lacalle RA, Mira E, Jimenez-Baranda S, Barber DF, Carrera AC, Martinez-A. C and...