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4741 results sorted by

Commitment to apoptosis in CD4(+) T lymphocytes productively infected with human immunodeficiency virus type 1 is initiated by lysosomal membrane permeabilization, itself induced by the isolated expression of the viral protein Nef

Primary CD4(+) T lymphocytes, supporting in vitro human immunodeficiency virus type 1 (HIV-1) replication, are destined to die by apoptosis. We explored the initial molecular events that act upstream from mitochondrial dysfunction in CD4(+) T...
Authors: Laforge M, Petit F, Estaquier J, Senik A
SST Peer Reviewed

Foxo3 is required for the regulation of oxidative stress in erythropoiesis

Erythroid cells accumulate hemoglobin as they mature and as a result are highly prone to oxidative damage. However, mechanisms of transcriptional control of antioxidant defense in erythroid cells have thus far been poorly characterized. We observed...
Authors: Marinkovic D, Zhang X, Yalcin S, Luciano JP, Brugnara C, Huber T, Ghaffari S

Analysis of viral cis elements conferring Kaposi's sarcoma-associated herpesvirus episome partitioning and maintenance

Maintenance of Kaposi's sarcoma-associated herpesvirus (KSHV) episomes in latently infected cells is dependent on the latency-associated nuclear antigen (LANA). LANA binds to the viral terminal repeats (TR), leading to recruitment of cellular origin...
Authors: Skalsky RL, Hu J, Renne R

A BAX/BAK-independent mechanism of cytochrome C release

Bax and Bak are multidomain pro-apoptotic members of the Bcl-2 family of proteins that regulate mitochondria-mediated apoptosis by direct modulation of mitochondrial membrane permeability. Since double-knock-out mouse embryonic fibroblasts with...
Authors: Mizuta T, Shimizu S, Matsuoka Y, Nakagawa T, Tsujimoto Y

Role of the scaffold protein RACK1 in apical expression of the cystic fibrosis transmembrane regulator (CFTR)

Previous studies from this laboratory demonstrated a role for protein kinase C (PKC)epsilon in the regulation of cAMP-dependent cystic fibrosis transmembrane regulator (CFTR) Cl channel function via binding of PKCepsilon to RACK1, a receptor for...
Authors: Auerbach M, Liedtke CM

5-Androstenediol promotes survival of gamma-irradiated human hematopoietic progenitors through induction of nuclear factor-kappaB activation and granulocyte colony-stimulating factor expression

5-Androstenediol (5-AED) stimulates hematopoiesis and enhances survival in animals exposed to ionizing radiation (IR), suggesting that this steroid may act on hematopoietic progenitor cells. We used gamma-irradiated primary human CD34(+)...
Authors: Xiao M, Inal CE, Parekh VI, Chang CM, Whitnall MH

The Transcriptional Repressor K-RBP Modulates RTA-mediated Transactivation and Lytic Replication of Kaposi's Sarcoma-Associated Herpesvirus

The replication and transcription activator (RTA) protein of Kaposi's sarcoma (KS)-associated herpesvirus (KSHV)/human herpesvirus 8 functions as the key regulator to induce KSHV lytic replication from latency through activation of the lytic cascade...
Authors: Yang Z, Wood C

Specificity of olfactory receptor interactions with other G protein-coupled receptors

Studies on olfactory receptor (OR) pharmacology have been hindered by the poor plasma membrane localization of most ORs in heterologous cells. We previously reported that association with the beta(2)-adrenergic receptor (beta(2)-AR) facilitates...
Authors: Bush CF, Jones SV, Lyle AN, Minneman KP, Ressler KJ, Hall RA

MEK1/2 inhibitors block basal and TGF-1 stimulated JC virus multiplication

The multiplication of the human neurotropic polyomavirus JC virus (JCV) is regulated by cell membrane receptors and nuclear transcription factors. Signaling pathways also play a role in determining the extent to which JCV can productively infect...
Authors: Ravichandran V, Jensen PN, Major EO

Modulation of estrogen receptor alpha protein level and survival function by DBC-1

Acquired resistance to endocrine therapy represents a major clinical obstacle to the successful management of estrogen-dependent breast cancers expressing estrogen receptor alpha (ERalpha). Because a switch from ligand-dependent to ligand-independent...
Authors: Trauernicht AM, Kim SJ, Kim NH, Boyer TG