PMID- 23358924 OWN - NLM STAT- MEDLINE DCOM- 20131017 LR - 20211021 IS - 1573-4919 (Electronic) IS - 0300-8177 (Linking) VI - 376 IP - 1-2 DP - 2013 Apr TI - NPY modulates miR-30a-5p and BDNF in opposite direction in an in vitro model of Alzheimer disease: a possible role in neuroprotection? PG - 189-95 LID - 10.1007/s11010-013-1567-0 [doi] AB - Using in vitro models of Alzheimer's disease (AD), we found that the toxic effects of amyloid beta 25-35 (Abeta(25-35)) on the neurotrophin brain-derived neurotrophic factor (BDNF) were counteracted by pre-incubation with neuropeptide Y (NPY), a neuropeptide expressed within the central nervous system. Nonetheless, the mechanism of action of NPY on BDNF neuronal production in the presence of Abeta is not known. BDNF expression might be directly regulated by microRNA (miRs), small non-coding DNA fragments that regulate the expression of target genes. Thus, there is the possibility that miRs alterations are present in AD-affected neurons and that NPY influences miR expression. To test this hypothesis, we exposed NPY-pretreated primary rat cortical neurons to Abeta(25-35) and measured miR-30a-5p (a member of the miR-30a family involved in BDNF tuning expression) and BDNF mRNA and protein expression after 24 and 48 h. Our results demonstrated that pre-treatment with NPY decreased miR-30a-5p expression and increased BDNF mRNA and protein expression at 24 and 48 h of incubation with Abeta. Therefore, this study demonstrates that NPY modulates BDNF and its regulating microRNA miR-30a-5p in opposite direction with a mechanism that possibly contributes to the neuroprotective effect of NPY in rat cortical neurons exposed to Abeta. FAU - Croce, Nicoletta AU - Croce N AD - Department of Clinical and Behavioral Neurology, IRCCS Santa Lucia Foundation, Rome, Italy. FAU - Gelfo, Francesca AU - Gelfo F FAU - Ciotti, Maria Teresa AU - Ciotti MT FAU - Federici, Giorgio AU - Federici G FAU - Caltagirone, Carlo AU - Caltagirone C FAU - Bernardini, Sergio AU - Bernardini S FAU - Angelucci, Francesco AU - Angelucci F LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130129 PL - Netherlands TA - Mol Cell Biochem JT - Molecular and cellular biochemistry JID - 0364456 RN - 0 (Amyloid beta-Peptides) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (MIRN30 microRNA, rat) RN - 0 (MicroRNAs) RN - 0 (Neuropeptide Y) RN - 0 (Neuroprotective Agents) RN - 0 (Peptide Fragments) RN - 0 (amyloid beta-protein (25-35)) SB - IM MH - Alzheimer Disease/*drug therapy/genetics/metabolism MH - Amyloid beta-Peptides/*metabolism/pharmacology MH - Animals MH - Base Sequence MH - Brain-Derived Neurotrophic Factor/genetics/*metabolism MH - Cells, Cultured MH - Cerebellar Cortex/cytology/embryology MH - Gene Expression Regulation/drug effects MH - MicroRNAs/*metabolism MH - Molecular Sequence Data MH - Neurons/drug effects/metabolism MH - Neuropeptide Y/*pharmacology MH - Neuroprotective Agents/*pharmacology MH - Peptide Fragments/*metabolism/pharmacology MH - Rats MH - Rats, Wistar EDAT- 2013/01/30 06:00 MHDA- 2013/10/18 06:00 CRDT- 2013/01/30 06:00 PHST- 2012/10/03 00:00 [received] PHST- 2013/01/18 00:00 [accepted] PHST- 2013/01/30 06:00 [entrez] PHST- 2013/01/30 06:00 [pubmed] PHST- 2013/10/18 06:00 [medline] AID - 10.1007/s11010-013-1567-0 [doi] PST - ppublish SO - Mol Cell Biochem. 2013 Apr;376(1-2):189-95. doi: 10.1007/s11010-013-1567-0. Epub 2013 Jan 29.