PMID- 19187096 OWN - NLM STAT- MEDLINE DCOM- 20090224 LR - 20161125 IS - 1471-4159 (Electronic) IS - 0022-3042 (Linking) VI - 108 IP - 3 DP - 2009 Feb TI - Induction of chemokines, MCP-1, and KC in the mutant huntingtin expressing neuronal cells because of proteasomal dysfunction. PG - 787-95 LID - 10.1111/j.1471-4159.2008.05823.x [doi] AB - Huntington's disease is a hereditary neurodegenerative disorder caused by an aberrant polyglutamine expansion in the amino terminus of the huntingtin protein. The resultant mutant huntingtin form aggregates in neurons and causes neuronal dysfunction and degeneration in many ways including transcriptional dysregulation. Here, we report that the expression of mutant huntingtin in the mouse neuroblastoma cell results in massive transcriptional induction of several chemokines including monocyte chemoattractant protein-1 (MCP-1) and murine chemokine (KC). The mutant huntingtin expressing cells also exhibit proteasomal dysfunction and down-regulation of NF-kappaB activity in a time-dependent manner and both these phenomena regulate the expression of MCP-1 and KC. The expression of MCP-1 and KC are increased in the mutant huntingtin expressing cells in response to mild proteasome inhibition. However, the expression of MCP-1 and KC and proteasome activity are not altered and inflammation is rarely observed in the brain of 12-week-old Huntington's disease transgenic mice in comparison with their age-matched controls. Our result suggests that the mutant huntingtin-induced proteasomal dysfunction can up-regulate the expression of MCP-1 and KC in the neuronal cells and therefore might trigger the inflammation process. FAU - Godavarthi, Swetha K AU - Godavarthi SK AD - Cellular and Molecular Neuroscience Laboratory, National Brain Research Centre, Manesar, Gurgaon, India. FAU - Narender, Doronala AU - Narender D FAU - Mishra, Amit AU - Mishra A FAU - Goswami, Anand AU - Goswami A FAU - Rao, Sudheendra N R AU - Rao SN FAU - Nukina, Nobuyuki AU - Nukina N FAU - Jana, Nihar Ranjan AU - Jana NR LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - J Neurochem JT - Journal of neurochemistry JID - 2985190R RN - 0 (Chemokine CCL2) RN - 0 (Chemokines, CC) RN - 0 (HTT protein, human) RN - 0 (Huntingtin Protein) RN - 0 (Interleukin-8) RN - 0 (MCK-1 protein, Mouse cytomegalovirus 1) RN - 0 (NF-kappa B) RN - 0 (Nerve Tissue Proteins) RN - 0 (Nuclear Proteins) RN - 0 (Viral Proteins) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinases) RN - EC 3.4.25.1 (Proteasome Endopeptidase Complex) SB - IM MH - Animals MH - Cells, Cultured MH - Chemokine CCL2/*biosynthesis/genetics MH - Chemokines, CC/*biosynthesis/genetics MH - Genes, Reporter/genetics MH - Humans MH - Huntingtin Protein MH - Immunoblotting MH - Immunohistochemistry MH - Interleukin-8/biosynthesis MH - Mice MH - Mice, Transgenic MH - Mitogen-Activated Protein Kinases/metabolism MH - Mutation/physiology MH - NF-kappa B/genetics MH - Nerve Tissue Proteins/*genetics MH - Neurons/*metabolism MH - Nuclear Proteins/*genetics MH - Proteasome Endopeptidase Complex/*genetics/*physiology MH - Reverse Transcriptase Polymerase Chain Reaction MH - Transfection MH - Viral Proteins/*biosynthesis/genetics EDAT- 2009/02/04 09:00 MHDA- 2009/02/25 09:00 CRDT- 2009/02/04 09:00 PHST- 2009/02/04 09:00 [entrez] PHST- 2009/02/04 09:00 [pubmed] PHST- 2009/02/25 09:00 [medline] AID - JNC5823 [pii] AID - 10.1111/j.1471-4159.2008.05823.x [doi] PST - ppublish SO - J Neurochem. 2009 Feb;108(3):787-95. doi: 10.1111/j.1471-4159.2008.05823.x.