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4535 results sorted by

Substitution in position 3 of cyclosporin A abolishes the cyclophilin-mediated gain-of-function mechanism but not immunosuppression

Binary complex formation between the immunosuppressive drug cyclosporin A (CsA) and cyclophilin 18 is the prerequisite for the ability of CsA to inhibit the protein phosphatase activity of calcineurin, a central mediator of antigen-receptor...
Authors: Baumgrass R, Zhang Y, Erdmann F, Thiel A, Weiwad M, Radbruch A and Fischer G

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

Mutant small heat-shock protein 27 causes axonal Charcot-Marie-Tooth disease and distal hereditary motor neuropathy

Charcot-Marie-Tooth disease (CMT) is the most common inherited neuromuscular disease and is characterized by considerable clinical and genetic heterogeneity. We previously reported a Russian family with autosomal dominant axonal CMT and assigned the...
Authors: Evgrafov OV, Mersiyanova I, Irobi J, Van Den Bosch L, Dierick I, Leung CL, Schagina O, Verpoorten N,...

Cathepsin D triggers Bax activation, resulting in selective AIF relocation in T lymphocytes entering the early commitment phase to apoptosis

Activated human T lymphocytes exposed to apoptotic stimuli targeting mitochondria (i.e. staurosporine), enter an early, caspase-independent phase of commitment to apoptosis characterized by cell shrinkage and peripheral chromatin condensation. We...
Authors: Bidère N, Lorenzo HK, Carmona S, Laforge M, Harper F, Dumont C and Senik A

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

DNA end joining becomes less efficient and more error-prone during cellular senescence

Accumulation of somatic mutations is thought to contribute to the aging process. Genomic instability has been shown to increase during aging, suggesting an aberrant function of DNA double-strand break (DSB) repair. Surprisingly, DSB repair has not...
Authors: Seluanov A, Mittelman D, Pereira-Smith OM, Wilson JH and Gorbunova V

The human fascin gene promoter is highly active in mature dendritic cells due to a stage-specific enhancer

Dendritic cells (DC), regarded as the most efficient APCs of the immune system, are capable of activating naive T cells. Thus, DC are primary targets in immunotherapy. However, little is known about gene regulation in DC, and for efficient...
Authors: Bros M, Ross XL, Pautz A, Reske-Kunz AB and Ross R

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

Blockade of Hsp27 overcomes bortezomib/proteasome inhibitor PS-341 resistance in lymphoma cells

Bortezomib (PS-341), a selective inhibitor of proteasome, induces apoptosis in various tumor cells, but its mechanism of action is unclear. Treatment with PS-341 induces apoptosis in SUDHL6 (DHL6), but not SUDHL4 (DHL4), lymphoma cells. Microarray...
Authors: Chauhan D, Li G, Shringarpure R, Podar K, Ohtake Y, Hideshima T and Anderson KC

Chemokine stimulation of human periphereal blood T lymphocytes induces rapid dephosphorylation of ERMs which facilitates loss of microvilli and polarization

Lymphocyte microvilli mediate initial rolling-adhesion along endothelium but are lost during transmigration from circulation to tissue. However, the mechanism for resorption of lymphocyte microvilli remains unexplored. We show that chemokine...
Authors: Brown MJ, Nijhara R, Hallam JA, Gignac M, Yamada KM, Erlandsen SL, Delon J, Kruhlak M and Shaw S
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