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Recognition of a novel stage of betaherpesvirus latency in human herpesvirus 6

Latency-associated transcripts of human herpesvirus 6 (H6LTs) (K. Kondo et al. J. Virol. 76:4145-4151, 2002) were maximally expressed at a fairly stable intermediate stage between latency and reactivation both in vivo and in vitro. H6LTs functioned...

Authors: Kondo K, Sashhara J, Shimada K, Takemoto M, Amo K, Miyagawa H and Yamanishi K

Analysis of intracellular storage and regulated secretion of three von Willebrands disease-causing variants of von Willebrand factor

The rapid exocytosis of von Willebrand factor (VWF) in response to vascular injury can be attributed to the fact that VWF is stored in the Weibel-Palade bodies (WPBs) of endothelial cells. We describe a system for examining the ability of VWF to...

Authors: Michaux G, Hewlett LJ, Messenger SL, Goodeve AC, Peake IR, Daly ME and Cutler DF

ARF6 stimulates clathrin/AP-2 recruitment to synaptic membranes by activating phosphatidylinositol phosphate kinase type I gamma

Clathrin-mediated endocytosis of synaptic vesicle membranes involves the recruitment of clathrin and AP-2 adaptor complexes to the presynaptic plasma membrane. Phosphoinositides have been implicated in nucleating coat assembly by directly binding to...

Authors: Krauss M, Kinuta M, Wenk MR, De Camilli P, Takei K and Haucke V

HAX-1, identified by differential display reverse transcription polyerase chain reaction, is overexpressed in lesional psoriasis

Psoriasis is a chronic inflammatory disease characterized by epidermal hyperplasia and an inflammatory infiltrate. The normal differentiation from basal to granular keratinocytes with subsequent apoptosis and cornification is disturbed in the...

Authors: Mirmohammadsadegh A, Tartler U, Michel G, Baer A, Walz M, Wolf R, Ruzicka T and Hengge UR

Histamine enhances TGF-beta1-mediated suppression of TH2 responses

Susceptibility of T cells to TGF-beta1 produced by regulatory T cells has an important impact on the induction and maintenance of peripheral tolerance and therefore on the development of autoimmunity, cancer, and allergy. Histamine not only mediates...

Authors: Kunzmann S, Mantel PY, Wohlfahrt JG, Akdis CA, Blaser K and Schmidt-Weber CB

Lymphotoxin and lipopolysaccharide induce NF-kappaB-p52 generation by a co-translational mechanism

The 'classical' NF-kappaB activation pathway proceeds via IkappaB kinase (IKK)-beta/gamma-mediated phosphorylation, induced ubiquitination and the degradation of small IkappaBs. An alternative, NF-kappaB-inducing kinase and IKK-alpha-dependent...

Authors: Mordmüller B, Krappmann D, Esen M, Wegener E and Scheidereit C

SARA and Hgs attenuate susceptibility to TGF-beta1-mediated T cell supression

Transforming growth factor-beta1 (TGF-beta1) is a pluripotent cytokine that controls peripheral T cell tolerance mainly in mucosal immunity. It is secreted by regulatory T cells (Tr /Th3) but also by other immununologically active cells. Smad anchor...

Authors: Kunzmann S, Wohlfahrt JG, Itoh S, Asao H, Komada M, Akdis CA, Blaser K and Schmidt-Weber CB

Human parvovirus B19 nonstructural protein (NS1) induces cell cycle arrest at G1 phase

Human parvovirus B19 infects predominantly erythroid precursor cells, leading to inhibition of erythropoiesis. This erythroid cell damage is mediated by the viral nonstructural protein 1 (NS1) through an apoptotic mechanism. We previously...

Authors: Morita E, Nakashima A, Asao H, Sato H and Sugamura K

IL-10-inducible Bcl-3 negatively regulates LPS-induced TNF-alpha production in macrophages

Interleukin-10 (IL-10) plays an important role in prevention of chronic inflammation in vivo. However, the molecular mechanism by which IL-10 exerts its anti-inflammatory response is poorly understood. Here, we performed a microarray analysis and...

Authors: Kuwata H, Watanabe Y, Miyoshi H, Yamamoto M, Kaisho T, Takeda K and Akira S

YY1 transcription factor down-regulates expression of CCR5, a major co-receptor for HIV-1

Expression of CCR5, a major coreceptor for human immunodeficiency virus type 1 (HIV-1), is regulated by a number of transcription factors. Here we report that the YY1 transcription factor down-regulates CCR5 promoter activity and that overexpression...

Authors: Moriuchi M and Moriuchi H

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