PMID- 16530956 OWN - NLM STAT- MEDLINE DCOM- 20060804 LR - 20220309 IS - 0304-3940 (Print) IS - 0304-3940 (Linking) VI - 400 IP - 1-2 DP - 2006 May 29 TI - c-fos modulates brain-derived neurotrophic factor mRNA expression in mouse hippocampal CA3 and dentate gyrus neurons. PG - 177-80 AB - Excess neuronal excitation by glutamate induces neuron cell death, which may contribute to the pathogenesis of acute brain injuries and neurodegenerative diseases. Our previous studies using a mouse with hippocampal c-fos gene deletion showed that c-fos regulates neuronal excitability and excitotoxicity. Moreover, a delayed induction of brain-derived neurotrophic factor (BDNF) protein expression in response to kainic acid (KA) treatment was found in c-fos mutant mice compared to wildtype controls, suggesting that c-fos is important in the temporal control of BDNF induction. To further investigate mechanisms of in vivo regulation of c-fos on BDNF expression, we studied the expression of BDNF mRNA and its colocalization with c-Fos protein in the hippocampal formation in the presence and absence of KA. By in situ hybridization, we observed that the c-fos mutant and wildtype mice exhibited similar basal expression of BDNF in the absence of KA. In contrast, the KA-induced BDNF mRNA levels were significantly different in wildtype and c-fos mutant mice in CA3 and dentate gyrus regions. Our findings indicate that c-fos regulates expression of BDNF in distinct neuron populations of the hippocampal formation in vivo. FAU - Dong, Mei AU - Dong M AD - Department of Cell Biology, Neurobiology and Anatomy, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA. FAU - Wu, Yongfei AU - Wu Y FAU - Fan, Yunxia AU - Fan Y FAU - Xu, Ming AU - Xu M FAU - Zhang, Jianhua AU - Zhang J LA - eng GR - DA11005/DA/NIDA NIH HHS/United States GR - DA13786/DA/NIDA NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20060313 PL - Ireland TA - Neurosci Lett JT - Neuroscience letters JID - 7600130 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Excitatory Amino Acid Agonists) RN - 0 (Proto-Oncogene Proteins c-fos) RN - 0 (RNA, Messenger) RN - SIV03811UC (Kainic Acid) SB - IM MH - Animals MH - Brain-Derived Neurotrophic Factor/genetics/*metabolism MH - Excitatory Amino Acid Agonists/pharmacology MH - Gene Expression/drug effects/*physiology MH - Hippocampus/*cytology/metabolism MH - Immunohistochemistry/methods MH - In Situ Hybridization/methods MH - Kainic Acid/pharmacology MH - Mice MH - Mice, Transgenic MH - Neurons/*metabolism MH - Proto-Oncogene Proteins c-fos/genetics/*physiology MH - RNA, Messenger/genetics/metabolism EDAT- 2006/03/15 09:00 MHDA- 2006/08/05 09:00 CRDT- 2006/03/15 09:00 PHST- 2006/01/06 00:00 [received] PHST- 2006/02/15 00:00 [revised] PHST- 2006/02/16 00:00 [accepted] PHST- 2006/03/15 09:00 [pubmed] PHST- 2006/08/05 09:00 [medline] PHST- 2006/03/15 09:00 [entrez] AID - S0304-3940(06)00193-5 [pii] AID - 10.1016/j.neulet.2006.02.063 [doi] PST - ppublish SO - Neurosci Lett. 2006 May 29;400(1-2):177-80. doi: 10.1016/j.neulet.2006.02.063. Epub 2006 Mar 13.