PMID- 17679933 OWN - NLM STAT- MEDLINE DCOM- 20070918 LR - 20181201 IS - 1090-0535 (Electronic) IS - 1090-0535 (Linking) VI - 13 DP - 2007 Jul 25 TI - Comparison of expression profile of neurotrophins and their receptors in primary and transformed rat retinal ganglion cells. PG - 1311-8 AB - PURPOSE: To determine the expression profile of neurotrophins and their receptors in cultured primary rat retinal ganglion cells (RGCs) and the transformed RGC-5 cells. METHODS: Confocal microscopic immunocytochemistry with double fluorescent labeling with thy-1 as a marker for RGCs was used to demonstrate expression of neurotrophins and their receptors. An enzyme-linked immunosorbent assay (ELISA) was used to detect secretion of neurotrophins by RGC-5 cells. RESULTS: Primary RGCs and RGC-5 cells expressed brain-derived neurotrophic factor (BDNF), nerve growth factor (NGF), neurotrophin-3 (NT3), neurotrophin-4 (NT4), and receptors TrkA, p75, with low levels of TrkB. However, minimal if any, expression of TrkC was observed in these cells. RGC-5 cells also secreted NT3 (1311+/-21 pg/ml), BDNF (92+/-9 pg/ml), NGF (86+/-7 pg/ml), and NT4 (21+/-1 pg/ml) into the cultured media. CONCLUSIONS: These results demonstrated that neurotrophins and TrkA, p75 with low levels of TrkB receptors are expressed by RGCs. Specific neurotrophins acting through TrkA, TrkB, and p75 receptors within the RGCs may be involved in the survival and apoptosis of the RGCs in various retinopathies, such as glaucoma. FAU - Agarwal, Neeraj AU - Agarwal N AD - Department of Cell Biology and Genetics, UNT Health Science Center, Fort Worth, TX 76107, USA. nagarwal@hsc.unt.edu FAU - Agarwal, Rajnee AU - Agarwal R FAU - Kumar, Domalapalli Maneesh AU - Kumar DM FAU - Ondricek, Amber AU - Ondricek A FAU - Clark, Abbot F AU - Clark AF FAU - Wordinger, Robert J AU - Wordinger RJ FAU - Pang, Iok-Hou AU - Pang IH LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20070725 PL - United States TA - Mol Vis JT - Molecular vision JID - 9605351 RN - 0 (Nerve Growth Factors) RN - 0 (Receptors, Nerve Growth Factor) RN - 0 (Thy-1 Antigens) SB - IM MH - Animals MH - Cell Line, Transformed MH - *Gene Expression Profiling MH - Immunohistochemistry MH - Nerve Growth Factors/*metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Receptors, Nerve Growth Factor/*metabolism MH - Retinal Ganglion Cells/cytology/*metabolism MH - Thy-1 Antigens/metabolism EDAT- 2007/08/08 09:00 MHDA- 2007/09/19 09:00 CRDT- 2007/08/08 09:00 PHST- 2007/08/08 09:00 [pubmed] PHST- 2007/09/19 09:00 [medline] PHST- 2007/08/08 09:00 [entrez] AID - v13/a143 [pii] PST - epublish SO - Mol Vis. 2007 Jul 25;13:1311-8.