PMID- 10762707 OWN - NLM STAT- MEDLINE DCOM- 20000605 LR - 20190826 IS - 0169-328X (Print) IS - 0169-328X (Linking) VI - 76 IP - 2 DP - 2000 Mar 29 TI - Depletion of a fatty acid-binding protein impairs neurite outgrowth in PC12 cells. PG - 315-24 AB - Epithelial fatty acid-binding protein (E-FABP) is up-regulated in rat dorsal root ganglia after sciatic nerve crush and in differentiating neurons during development. The present study investigates the role of E-FABP during nerve growth factor (NGF)-mediated neurite outgrowth in PC12 cells. Undifferentiated PC12 cells express low levels of E-FABP, while NGF triggers a 6- and 8-fold induction of E-FABP mRNA and protein, respectively. Up-regulation of E-FABP mRNA occurs as early as 24 h after NGF treatment and remains highly expressed over the course of several days, corresponding to NGF-mediated neurite outgrowth. Withdrawal of NGF leads to down-regulation of E-FABP mRNA and retraction of neurites. Immunofluorescence microscopy reveals E-FABP immunoreactivity in the perinuclear cytoplasm, neurites and growth cones of NGF-differentiated cells. To examine the role of E-FABP during neurite outgrowth, PC12 cells were transfected with a constitutive antisense E-FABP vector to create the E-FABP-deficient line PC12-AS. By morphometric analysis, PC12-AS cells treated for 2, 4, and 7 days with NGF exhibited significantly decreased neurite expression relative to control (mock-transfected) cells. Taken together, these data indicate that E-FABP is important in normal NGF-mediated neurite outgrowth in PC12 cells, a finding that is consistent with a potential role in axonal development and regeneration. FAU - Allen, G W AU - Allen GW AD - Department of Physiology and Pharmacology and Center for Molecular Biology and Gene Therapy, Loma Linda School of Medicine, Loma Linda University, Mortenson Hall 142 LLU, Loma Linda, CA 92350, USA. FAU - Liu, J W AU - Liu JW FAU - De Leon, M AU - De Leon M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. PL - Netherlands TA - Brain Res Mol Brain Res JT - Brain research. Molecular brain research JID - 8908640 RN - 0 (Carrier Proteins) RN - 0 (Fabp7 protein, rat) RN - 0 (Fatty Acid-Binding Protein 7) RN - 0 (Fatty Acid-Binding Proteins) RN - 0 (Fatty Acids) RN - 0 (Myelin P2 Protein) RN - 0 (Neoplasm Proteins) RN - 0 (Nerve Tissue Proteins) RN - 0 (RNA, Messenger) RN - 0 (Recombinant Proteins) RN - 9061-61-4 (Nerve Growth Factor) SB - IM MH - Animals MH - Carrier Proteins/*genetics/physiology MH - Cytoplasm/physiology MH - Fatty Acid-Binding Protein 7 MH - Fatty Acid-Binding Proteins MH - Fatty Acids/metabolism MH - Gene Expression Regulation/drug effects/*physiology MH - Kinetics MH - Myelin P2 Protein/*genetics/physiology MH - *Neoplasm Proteins MH - Nerve Growth Factor/*pharmacology MH - *Nerve Tissue Proteins MH - Neurites/drug effects/*physiology MH - PC12 Cells MH - RNA, Messenger/genetics MH - Rats MH - Recombinant Proteins/biosynthesis MH - Transfection EDAT- 2000/04/14 09:00 MHDA- 2000/06/10 09:00 CRDT- 2000/04/14 09:00 PHST- 2000/04/14 09:00 [pubmed] PHST- 2000/06/10 09:00 [medline] PHST- 2000/04/14 09:00 [entrez] AID - S0169328X00000140 [pii] AID - 10.1016/s0169-328x(00)00014-0 [doi] PST - ppublish SO - Brain Res Mol Brain Res. 2000 Mar 29;76(2):315-24. doi: 10.1016/s0169-328x(00)00014-0.