OBJECTIVES: We hypothesized that microRNA (miR) expression may be involved in memory function because it controls local protein translation at synapses and dendritic spines. DESIGN: Case-control animal study. METHODS: We assessed the miR repertoire in the hippocampus of young, 6-month-old (N = 18) mice compared with aged, 26-month-old (N = 23) mice and compared miR quantity to memory scores as determined by the novel object recognition task. We performed a histological brain regional analysis of miR-138, acyl protein thioesterase 1 (APT1) mRNA, and APT1 protein. RESULTS: We found that higher miR-138 expression in the mouse hippocampus is correlated with better memory performance. We also found that APT1 (a depalmytoylation enzyme expressed at dendritic spines whose translation is controlled by miR-138) mRNA is increased in the mouse hippocampal CA1 and dentate gyrus in aged mice compared with young mice, but not in mice with memory impairment. We found APT1 protein distribution to be lower in cells with high miR-138 expression. CONCLUSIONS: These results suggest that increased miR-138 is associated with better memory and increased APT1 gene transcription occurs with aging. The role of miR-138 and APT1 protein function in memory and aging warrants further investigation.
OBJECTIVES: We hypothesized that microRNA (miR) expression may be involved in memory function because it controls local protein translation at synapses and dendritic spines. DESIGN: Case-control animal study. METHODS: We assessed the miR repertoire in the hippocampus of young, 6-month-old (N = 18) mice compared with aged, 26-month-old (N = 23) mice and compared miR quantity to memory scores as determined by the novel object recognition task. We performed a histological brain regional analysis of miR-138, acyl protein thioesterase 1 (APT1) mRNA, and APT1 protein. RESULTS: We found that higher miR-138 expression in the mouse hippocampus is correlated with better memory performance. We also found that APT1 (a depalmytoylation enzyme expressed at dendritic spines whose translation is controlled by miR-138) mRNA is increased in the mouse hippocampal CA1 and dentate gyrus in aged mice compared with young mice, but not in mice with memory impairment. We found APT1 protein distribution to be lower in cells with high miR-138 expression. CONCLUSIONS: These results suggest that increased miR-138 is associated with better memory and increased APT1 gene transcription occurs with aging. The role of miR-138 and APT1 protein function in memory and aging warrants further investigation.
Authors: Ed S Lein; Michael J Hawrylycz; Nancy Ao; Mikael Ayres; Amy Bensinger; Amy Bernard; Andrew F Boe; Mark S Boguski; Kevin S Brockway; Emi J Byrnes; Lin Chen; Li Chen; Tsuey-Ming Chen; Mei Chi Chin; Jimmy Chong; Brian E Crook; Aneta Czaplinska; Chinh N Dang; Suvro Datta; Nick R Dee; Aimee L Desaki; Tsega Desta; Ellen Diep; Tim A Dolbeare; Matthew J Donelan; Hong-Wei Dong; Jennifer G Dougherty; Ben J Duncan; Amanda J Ebbert; Gregor Eichele; Lili K Estin; Casey Faber; Benjamin A Facer; Rick Fields; Shanna R Fischer; Tim P Fliss; Cliff Frensley; Sabrina N Gates; Katie J Glattfelder; Kevin R Halverson; Matthew R Hart; John G Hohmann; Maureen P Howell; Darren P Jeung; Rebecca A Johnson; Patrick T Karr; Reena Kawal; Jolene M Kidney; Rachel H Knapik; Chihchau L Kuan; James H Lake; Annabel R Laramee; Kirk D Larsen; Christopher Lau; Tracy A Lemon; Agnes J Liang; Ying Liu; Lon T Luong; Jesse Michaels; Judith J Morgan; Rebecca J Morgan; Marty T Mortrud; Nerick F Mosqueda; Lydia L Ng; Randy Ng; Geralyn J Orta; Caroline C Overly; Tu H Pak; Sheana E Parry; Sayan D Pathak; Owen C Pearson; Ralph B Puchalski; Zackery L Riley; Hannah R Rockett; Stephen A Rowland; Joshua J Royall; Marcos J Ruiz; Nadia R Sarno; Katherine Schaffnit; Nadiya V Shapovalova; Taz Sivisay; Clifford R Slaughterbeck; Simon C Smith; Kimberly A Smith; Bryan I Smith; Andy J Sodt; Nick N Stewart; Kenda-Ruth Stumpf; Susan M Sunkin; Madhavi Sutram; Angelene Tam; Carey D Teemer; Christina Thaller; Carol L Thompson; Lee R Varnam; Axel Visel; Ray M Whitlock; Paul E Wohnoutka; Crissa K Wolkey; Victoria Y Wong; Matthew Wood; Murat B Yaylaoglu; Rob C Young; Brian L Youngstrom; Xu Feng Yuan; Bin Zhang; Theresa A Zwingman; Allan R Jones Journal: Nature Date: 2006-12-06 Impact factor: 49.962
Authors: Xuejun Peng; Constance L Wood; Eric M Blalock; Kuey Chu Chen; Philip W Landfield; Arnold J Stromberg Journal: BMC Bioinformatics Date: 2003-06-24 Impact factor: 3.169
Authors: Rodrigo M Maza; María Asunción Barreda-Manso; David Reigada; Ágata Silván; Teresa Muñoz-Galdeano; Altea Soto; Ángela Del Águila; Manuel Nieto-Díaz Journal: Biomedicines Date: 2022-06-30