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Apop-1, a novel protein inducing cyclophilin D-dependent but Bax/Bak-related channel-independent apoptosis

In the intrinsic pathway of apoptosis, mitochondria play a crucial role by releasing cytochrome c from the inter-membrane space into the cytoplasm. Cytochrome c release through Bax/Bak-dependent channels in mitochondria has been well-documented. In...

Authors: Yasuda O, Fukuo K, Sun X, Nishitani M, Yotsui T, Higuchi M, Suzuki T, Rakugi H, Smithies O, Maeda N,...

Expression and functional state of the corticosteroid receptors and 11 beta-hydroxysteroid dehydrogenase type 2 in Schwann cells

To investigate the role of steroid receptors in mediating the reported effects of steroids on Schwann cell (SC) myelination and growth, we determined mRNA contents and transcriptional activities of the corticosteroid (glucocorticosteroid and...

Authors: Groyer G, Eychenne B, Girard C, Rajkowski K, Schumacher M, Cadepond F

Phosphoinositide-mediated adaptor recruitment controls Toll-like receptor signaling

Toll-like receptors (TLRs) play a critical role in the immune system as sensors of microbial infection. Signaling downstream from TLRs is initiated by the recruitment of adaptor proteins, including MyD88 and TIRAP. These adaptors play essential roles...

Authors: Kagan JC, Medzhitov R

Phosphatidylinositol-3-Kinase Regulates Scavenger Receptor Class B Type I Subcellular Localization and Selective Lipid Uptake in Hepatocytes

OBJECTIVE: The high-density lipoprotein (HDL) receptor scavenger receptor Class B type I (SR-BI) plays a key role in mediating the final step of reverse cholesterol transport. This study examined the possible regulation of hepatic SR-BI by...

Authors: Shetty S, Eckhardt ER, Post SR, van der Westhuyzen DR

Lipid raft adhesion receptors and Syk regulate selectin-dependent rolling under flow conditions

Selectins and their ligand P-selectin glycoprotein ligand-1 (PSGL-1) mediate leukocyte rolling along inflamed vessels. Cell rolling is modulated by selectin interactions with their ligands and by topographic requirements including L-selectin and...

Authors: Abbal C, Lambelet M, Bertaggia D, Gerbex C, Martinez M, Arcaro A, Schapira M, Spertini O

Interneurite affinity is regulated by heterophilic nectin interactions in concert with the cadherin machinery

Neurites recognize their specific partners during the formation of interneuronal connections. In hippocampal pyramidal neurons, axons attach to dendrites for their synaptogenesis, but the dendrites do not form stable contacts with each other,...

Authors: Togashi H, Miyoshi J, Honda T, Sakisaka T, Takai Y, Takeichi M

Polypyrimidine tract-binding protein promotes insulin secretory granule biogenesis

Pancreatic beta-cells store insulin in secretory granules that undergo exocytosis upon glucose stimulation. Sustained stimulation depletes beta-cells of their granule pool, which must be quickly restored. However, the factors promoting rapid granule...

Authors: Knoch KP, Bergert H, Borgonovo B, Saeger HD, Altkruger A, Verkade P, Solimena M

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