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4720 results sorted by

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

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

Illegitimate WNT signaling promotes proliferation of multiple myeloma cells

The unrestrained growth of tumor cells is generally attributed to mutations in essential growth control genes, but tumor cells are also influenced by signals from the environment. In multiple myeloma (MM), the factors and signals coming from the bone...
Authors: Derksen PWB, Tjin E, Meijer HP, Klok MD, Mac Gillavry HD, van Oers MHJ, Lokhorst HM, Bloem AC,...

Endothelial cells stimulate T cell NFAT nuclear translocation in the presence of cyclosporin A: involvement of the wnt/glycogen synthase kinase-3beta pathway

T cells resistant to the immunosuppressive drug cyclosporin A (CsA) may be important mediators of chronic graft rejection. We previously reported that T cells activated in the presence of endothelial cells (EC) develop resistance to CsA, and initiate...
Authors: Salazar Murphy LL and Hughes CCW

Brain development in mice lacking L1-L1 homophilic adhesion

A new mouse line has been produced in which the sixth Ig domain of the L1 cell adhesion molecule has been deleted. Despite the rather large deletion, L1 expression is preserved at normal levels. In vitro experiments showed that L1-L1 homophilic...
Authors: Itoh K, Cheng L, Kamei Y, Fushiki S, Kamiguchi H, Gutwein P, Stoeck A, Arnold B, Altevogt P and...

Targeted deletion of BMK1/ERK5 in adult mice perturbs vascular integrity and leads to endothelial failure

Big mitogen-activated protein kinase 1 (BMK1), also known as ERK5, is a member of the MAPK family. Genetic ablation of BMK1 in mice leads to embryonic lethality, precluding the exploration of pathophysiological roles of BMK1 in adult mice. We...
Authors: Hayashi M, Kim SW, Imanaka-Yoshida K, Yoshida T, Abel ED, Eliceiri B, Yang Y, Ulevitch RJ and Lee...

CD28 engagement promotes actin polymerization through the activation of the small Rho GTPase Cdc42 in human T cells

Engagement of the costimulatory molecule CD28 is an important step in the optimal activation of T cells. Nevertheless, the specific role of CD28 in the formation of the immunological synapse and cytoskeletal changes that occur upon TCR/CD3 complex...
Authors: Salazar-Fontana LI, Barr V, Samelson LE and Bierer BE

Overexpression of c-maf is a frequent oncogenic event in multiple myeloma that promotes proliferation and pathological interactions with bone marrow stroma

The oncogene c-maf is translocated in approximately 5%-10% of multiple myelomas. Unexpectedly, we observed c-maf expression in myeloma cell lines lacking c-maf translocations and in 50% of multiple myeloma bone marrow samples. By gene expression...
Authors: Hurt EM, Wiestner A, Rosenwald A, Shaffer AL, Campo E, Grogan T, Bergsagel PL, Kuehl WM and Staudt...

Crucial role of DNA methylation in determination of clonally distributed killer cell Ig-like receptor expression patterns in NK cells

Human NK cells are characterized by the expression of surface receptors of the killer cell Ig-like receptor (KIR) family, which are involved in the specific recognition of pathogenic target cells. Each NK cell expresses and maintains an individual...
Authors: Santourlidis S, Trompeter HI, Weinhold S, Eisermann, Meyer KL, Wernet P and Uhrberg M

Dual-specificity phosphatase 5 (DUSP5) as a direct transcriptional target of tumor suppressor p53

Dual-specificity phosphatase 5 (DUSP5), a VH1-like enzyme that hydrolyses nuclear substrates phosphorylated on both tyrosine and serine/threonine residues, has a potential role in deactivation of mitogen- or stress-activated protein kinases. Using...
Authors: Ueda K, Arakawa H and Nakamura Y
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