PMID- 12890557 OWN - NLM STAT- MEDLINE DCOM- 20031204 LR - 20220330 IS - 0006-3002 (Print) IS - 0006-3002 (Linking) VI - 1628 IP - 2 DP - 2003 Jul 28 TI - The chromosome 21 transcription factor ETS2 transactivates the beta-APP promoter: implications for Down syndrome. PG - 105-10 AB - The gene that codes for beta-amyloid precursor protein (beta-APP), a protein centrally involved in senile plaque formation in Down syndrome (DS) and Alzheimer's disease (AD), is located on chromosome 21. In DS beta-APP expression is three- to fourfold higher than what is expected from the 1.5-fold increased gene load, suggesting that other genes on chromosome 21 directly or indirectly can further up-regulate beta-APP. Here we show that the chromosome 21 transcription factor ETS2 transactivates the beta-APP gene via specific Ets binding sites in the beta-APP promoter and, in this respect, cooperates with the transcription factor complex AP1. We further show that brains and primary neuronal cultures from Ets2 transgenic mice, as well as 3T3 fibroblasts that overexpress ETS2, display molecular abnormalities also seen in DS, such as elevated expression of beta-APP protein, an increase in presenilin-1 and increased beta-amyloid production. We conclude that ETS2 is a transcriptional regulator of beta-APP and that overexpression of ETS2 in DS may play a role in the pathogenesis of the brain abnormalities in DS and possibly AD. FAU - Wolvetang, E W AU - Wolvetang EW AD - Centre for Functional Genomics and Human Disease, Monash Institute of Reproduction and Development, Monash University, Monash Medical Center, 246 Clayton Road, 3168, Clayton, Australia. ernst.wolvetang@med.monash.edu.au FAU - Bradfield, O M AU - Bradfield OM FAU - Tymms, M AU - Tymms M FAU - Zavarsek, S AU - Zavarsek S FAU - Hatzistavrou, T AU - Hatzistavrou T FAU - Kola, I AU - Kola I FAU - Hertzog, P J AU - Hertzog PJ LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - Biochim Biophys Acta JT - Biochimica et biophysica acta JID - 0217513 RN - 0 (Amyloid beta-Peptides) RN - 0 (Amyloid beta-Protein Precursor) RN - 0 (DNA-Binding Proteins) RN - 0 (ERF protein, human) RN - 0 (ETS2 protein, human) RN - 0 (Ets2 protein, mouse) RN - 0 (Membrane Proteins) RN - 0 (PSEN1 protein, human) RN - 0 (Presenilin-1) RN - 0 (Proto-Oncogene Protein c-ets-2) RN - 0 (Proto-Oncogene Proteins) RN - 0 (Repressor Proteins) RN - 0 (Trans-Activators) RN - 0 (Transcription Factor AP-1) RN - 0 (Transcription Factors) SB - IM MH - 3T3 Cells MH - Amyloid beta-Peptides/metabolism MH - Amyloid beta-Protein Precursor/biosynthesis/*genetics MH - Animals MH - Binding Sites MH - Brain/metabolism MH - Chromosomes, Human, Pair 21/*genetics MH - *DNA-Binding Proteins MH - Down Syndrome/*genetics MH - Humans MH - Membrane Proteins/metabolism MH - Mice MH - Mice, Transgenic MH - Presenilin-1 MH - Promoter Regions, Genetic MH - Proto-Oncogene Protein c-ets-2 MH - Proto-Oncogene Proteins/biosynthesis/*physiology MH - *Repressor Proteins MH - Trans-Activators/biosynthesis/*physiology MH - Transcription Factor AP-1/metabolism MH - *Transcription Factors MH - Transcriptional Activation EDAT- 2003/08/02 05:00 MHDA- 2003/12/05 05:00 CRDT- 2003/08/02 05:00 PHST- 2003/08/02 05:00 [pubmed] PHST- 2003/12/05 05:00 [medline] PHST- 2003/08/02 05:00 [entrez] AID - S0167478103001210 [pii] AID - 10.1016/s0167-4781(03)00121-0 [doi] PST - ppublish SO - Biochim Biophys Acta. 2003 Jul 28;1628(2):105-10. doi: 10.1016/s0167-4781(03)00121-0.