PMID- 26614345 OWN - NLM STAT- MEDLINE DCOM- 20170316 LR - 20181113 IS - 1559-1166 (Electronic) IS - 0895-8696 (Linking) VI - 59 IP - 3 DP - 2016 Jul TI - C6 Glioma-Secreted NGF and FGF2 Regulate Neuronal APP Processing Through Up-Regulation of ADAM10 and Down-Regulation of BACE1, Respectively. PG - 334-42 LID - 10.1007/s12031-015-0690-7 [doi] AB - Excessive accumulation of amyloid-beta (Abeta) caused by cleavage of amyloid precursor protein (APP) is thought to be the primary cause of Alzheimer's disease (AD). Two key enzymes ADAM10 and BACE1 are involved in the initial cleavage of APP, resulting in the onset of two pathways, the amyloidogenic pathway and the non-amyloidogenic pathway, respectively. Altering APP metabolism towards the non-amyloidogenic pathway is thought to reduce Abeta production. It has been reported that, in vivo, exogenous neurotrophic factors make APP apt to entering the non-amyloidogenic pathway. Since astrocytes secrete a battery of neurotrophic factors, we investigated the role of astrocyte-derived factors in the dynamics of Abeta generation in neural cells. Results show that C6 glioma cell-conditioned medium (GCM), obtained from cultured astrocyte-derived C6 glioma cells, inhibit Abeta1-42 production and shift APP processing towards the non-amyloidogenic pathway in APPswe-HEK293 cells. Such effect is attributed to two key APP cleavage enzymes, ADAM10 and BACE1. Two neurotrophic factors in the GCM, nerve growth factor and fibroblast growth factor 2, are responsible for the up-regulation of ADAM10 and down-regulation of BACE1, respectively. Our findings enhance our understanding of the relationship between astrocytes and Abeta generation, indicating that stimulation of astrocytic neurotrophic factors could slow AD progression. FAU - Xie, Huiping AU - Xie H AD - College of Life Sciences, Wuhan University, Room 5105, Wuhan, Hubei, 430072, People's Republic of China. FAU - Xiao, Zhimin AU - Xiao Z AD - College of Life Sciences, Wuhan University, Room 5105, Wuhan, Hubei, 430072, People's Republic of China. AD - Sanofi, Cambridge, MA, 02142, USA. FAU - Huang, Jian AU - Huang J AD - College of Life Sciences, Wuhan University, Room 5105, Wuhan, Hubei, 430072, People's Republic of China. jianhuang@whu.edu.cn. LA - eng PT - Journal Article DEP - 20151127 PL - United States TA - J Mol Neurosci JT - Journal of molecular neuroscience : MN JID - 9002991 RN - 0 (Amyloid beta-Protein Precursor) RN - 0 (Culture Media, Conditioned) RN - 0 (Membrane Proteins) RN - 103107-01-3 (Fibroblast Growth Factor 2) RN - 9061-61-4 (Nerve Growth Factor) RN - EC 3.4.- (Amyloid Precursor Protein Secretases) RN - EC 3.4.23.- (Aspartic Acid Endopeptidases) RN - EC 3.4.23.46 (BACE1 protein, human) RN - EC 3.4.24.81 (ADAM10 Protein) RN - EC 3.4.24.81 (ADAM10 protein, human) SB - IM MH - ADAM10 Protein/genetics/*metabolism MH - Amyloid Precursor Protein Secretases/genetics/*metabolism MH - Amyloid beta-Protein Precursor/*metabolism MH - Aspartic Acid Endopeptidases/genetics/*metabolism MH - Astrocytes/metabolism MH - Cell Line, Tumor MH - Culture Media, Conditioned/pharmacology MH - Fibroblast Growth Factor 2/*metabolism/pharmacology MH - HEK293 Cells MH - Humans MH - Membrane Proteins/genetics/*metabolism MH - Nerve Growth Factor/*metabolism/pharmacology MH - Neurons/drug effects/*metabolism MH - Protein Processing, Post-Translational OTO - NOTNLM OT - ADAM10 OT - Astrocyte OT - BACE1 OT - C6 glioma cell-conditioned medium OT - FGF2 OT - NGF EDAT- 2015/11/29 06:00 MHDA- 2017/03/17 06:00 CRDT- 2015/11/29 06:00 PHST- 2015/07/16 00:00 [received] PHST- 2015/11/19 00:00 [accepted] PHST- 2015/11/29 06:00 [entrez] PHST- 2015/11/29 06:00 [pubmed] PHST- 2017/03/17 06:00 [medline] AID - 10.1007/s12031-015-0690-7 [pii] AID - 10.1007/s12031-015-0690-7 [doi] PST - ppublish SO - J Mol Neurosci. 2016 Jul;59(3):334-42. doi: 10.1007/s12031-015-0690-7. Epub 2015 Nov 27.