PMID- 15927426 OWN - NLM STAT- MEDLINE DCOM- 20050808 LR - 20220317 IS - 0378-1119 (Print) IS - 0378-1119 (Linking) VI - 353 IP - 1 DP - 2005 Jun 20 TI - Cloning and characterization of HIV-1-inducible astrocyte elevated gene-1, AEG-1. PG - 8-15 AB - We presently describe the full-length cloning and functional characterization of an HIV-1-inducible gene, astrocyte elevated gene (AEG)-1. Additionally, a novel method is outlined for producing tag-free recombinant protein in a baculovirus system and its use in producing AEG-1 protein. AEG-1 mRNA is expressed ubiquitously with higher expression in tissues containing muscular actin and its expression is increased in astrocytes infected with HIV-1 or treated with gp120 or tumor necrosis factor (TNF)-alpha. The mRNA encodes a single pass transmembrane protein of predicted molecular mass of 64-kDa and pI 9.3 that predominantly localizes in the endoplasmic reticulum and perinuclear region. Ectopic expression of AEG-1 inhibits excitatory amino acid transporter 2 (EAAT2) promoter activity with the potential to promote glutamate excitotoxicity and consequently HIV-1-associated dementia (HAD). AEG-1 expression is elevated in subsets of breast carcinomas, malignant gliomas and melanomas and it synergizes with oncogenic Ha-ras to enhance soft agar colony forming ability of non-tumorigenic immortalized melanocytes, documenting its tumor promoting activity. AEG-1 may affect tumor progression in multiple cell lineages by augmenting expression of the transformed phenotype and/or by inducing glutamate excitotoxicity in malignant glioma. In these contexts, an HIV-1-inducible gene, AEG-1, may contribute to multiple brain abnormalities, including HAD and tumor formation, by both common and distinct mechanisms. FAU - Kang, Dong-Chul AU - Kang DC AD - Hallym University, Ilsong Institute of Life Science, 1605-4, Kwanyang-dong, Anyang, Kyeonggi-do, Republic of Korea. FAU - Su, Zao-Zhong AU - Su ZZ FAU - Sarkar, Devanand AU - Sarkar D FAU - Emdad, Luni AU - Emdad L FAU - Volsky, David J AU - Volsky DJ FAU - Fisher, Paul B AU - Fisher PB LA - eng GR - P01 NS031492/NS/NINDS NIH HHS/United States GR - GM068488/GM/NIGMS NIH HHS/United States GR - NS31492/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - Netherlands TA - Gene JT - Gene JID - 7706761 RN - 0 (Amino Acid Transport System X-AG) RN - 0 (Antibodies) RN - 0 (Cell Adhesion Molecules) RN - 0 (DNA, Complementary) RN - 0 (Excitatory Amino Acid Transporter 2) RN - 0 (Glutamate Plasma Membrane Transport Proteins) RN - 0 (HIV Envelope Protein gp120) RN - 0 (MTDH protein, human) RN - 0 (Membrane Proteins) RN - 0 (RNA-Binding Proteins) RN - 0 (Recombinant Proteins) RN - 0 (SLC1A2 protein, human) RN - 0 (Symporters) RN - 0 (Tumor Necrosis Factor-alpha) RN - EC 1.13.12.- (Luciferases) SB - IM MH - Amino Acid Transport System X-AG/genetics MH - Antibodies/immunology MH - Astrocytes/drug effects/*metabolism/virology MH - Blotting, Northern MH - Blotting, Western MH - Brain MH - Cell Adhesion MH - Cell Adhesion Molecules MH - Cell Line MH - Cell Line, Tumor MH - Cell Proliferation MH - Cells, Cultured MH - Cloning, Molecular MH - DNA, Complementary/genetics MH - Excitatory Amino Acid Transporter 2 MH - Female MH - Fetus MH - Gene Expression Profiling MH - *Gene Expression Regulation MH - Genetic Vectors/genetics MH - Glutamate Plasma Membrane Transport Proteins MH - HIV Envelope Protein gp120/pharmacology MH - HIV-1/*growth & development MH - Humans MH - Luciferases/genetics/metabolism MH - Male MH - Membrane Proteins MH - Microscopy, Fluorescence MH - Open Reading Frames/genetics MH - Promoter Regions, Genetic/genetics MH - RNA-Binding Proteins MH - Recombinant Proteins/immunology/metabolism MH - Symporters/genetics MH - Transfection MH - Tumor Necrosis Factor-alpha/*genetics/metabolism/pharmacology/physiology EDAT- 2005/06/02 09:00 MHDA- 2005/08/09 09:00 CRDT- 2005/06/02 09:00 PHST- 2005/02/07 00:00 [received] PHST- 2005/03/15 00:00 [revised] PHST- 2005/04/01 00:00 [accepted] PHST- 2005/06/02 09:00 [pubmed] PHST- 2005/08/09 09:00 [medline] PHST- 2005/06/02 09:00 [entrez] AID - S0378-1119(05)00194-0 [pii] AID - 10.1016/j.gene.2005.04.006 [doi] PST - ppublish SO - Gene. 2005 Jun 20;353(1):8-15. doi: 10.1016/j.gene.2005.04.006.