Abstract
Abstract:Neurotrophic factors (NTFs) can protect against or sensitize neurons to excitotoxicity. We studied the role played by various NTFs in the excitotoxic death of purified embryonic rat motor neurons. Motor neurons cultured in brain‐derived neurotrophic factor, but not neurotrophin 3, glial‐derived neurotrophic factor, or cardiotrophin 1, were sensitive to excitotoxic insult. BDNF also induces excitotoxic sensitivity (ES) in motor neurons when BDNF is combined with these other NTFs. The effect of BDNF depends on de novo protein and mRNA synthesis. Reagents that either activate or inhibit the 75‐kDa NTF receptor p75NTRdo not affect BDNF‐induced ES. The low EC50for BDNF‐induced survival and ES suggests that TrkB mediates both of these biological activities. BDNF does not alter glutamate‐evoked rises of intracellular Ca2+, suggesting BDNF acts downstream. Both wortmannin and LY294002, which specifically block the phosphatidylinositol 3‐kinase (PI3K) intracellular signaling pathway in motor neurons, inhibit BDNF‐induced ES. We confirm this finding using a herpes simplex virus (HSV) that expresses the dominant negative p85 subunit of PI3K. Infecting motor neurons with this HSV, but not a control HSV, blocks activation of the PI3K pathway and BDNF‐induced ES. Through the activation of TrkB and the PI3K signaling pathway, BDNF renders developing motor neurons susceptible to glutamate receptor‐mediated cell death.
Bibliography
Fryer, H. J. L., Wolf, D. H., Knox, R. J., Strittmatter, S. M., Pennica, D., OâLeary, R. M., Russell, D. S., & Kalb, R. G. (2000). BrainâDerived Neurotrophic Factor Induces Excitotoxic Sensitivity in Cultured Embryonic Rat Spinal Motor Neurons Through Activation of the Phosphatidylinositol 3âKinase Pathway. Journal of Neurochemistry, 74(2), 582â595. Portico.
References
97
Referenced
48
10.1074/jbc.272.9.5936
10.1002/neu.480251107
10.1111/j.1432-1033.1995.084_c.x
10.1523/JNEUROSCI.18-19-07903.1998
/ J. Neurosci. / Development of survival responsiveness to brain‐derived neurotrophic factor, neurotrophin 3 and neurotrophin 4/5, but not to nerve growth factor, in cultured motoneurons from chick embryo spinal cord. by Becker E. (1998)10.1523/JNEUROSCI.18-19-07953.1998
10.1038/376599a0
10.1002/(SICI)1096-9861(19971013)387:1<73::AID-CNE7>3.0.CO;2-K
10.1073/pnas.90.18.8752
10.1016/0165-0270(92)90114-S
10.1113/jphysiol.1997.sp021848
10.1016/S0896-6273(00)80259-7
10.1038/383716a0
10.1002/neu.480251106
10.1016/0166-2236(95)93922-K
10.1016/0896-6273(88)90162-6
10.1146/annurev.ne.13.030190.001131
10.1146/annurev.nu.15.070195.001025
10.1083/jcb.122.4.915
10.1002/neu.480251103
10.1042/bj3180729
10.1074/jbc.270.25.15125
10.1074/jbc.270.38.22135
10.1073/pnas.92.17.7686
10.1016/0006-8993(90)91241-8
10.1523/JNEUROSCI.14-04-02054.1994
10.1523/JNEUROSCI.15-01-00202.1995
/ J. Neurosci. / Differential regulation of neuronal sodium channel expression by endogenous and exogenous tyrosine kinase receptors expressed in rat pheochromocytoma cells. by Fanger G.R. (1995)10.1523/JNEUROSCI.18-08-02808.1998
/ J. Neurosci. / Functional evidence that BDNF is an anterograde neuronal trophic factor in the CNS. by Fawcett J.P. (1998)10.1016/0014-5793(93)80453-2
10.1038/381706a0
10.1038/383166a0
10.1111/j.1471-4159.1993.tb03278.x
10.1016/0092-8674(95)90534-0
10.1046/j.1471-4159.1999.0720500.x
10.1073/pnas.91.16.7415
10.1146/annurev.pa.35.040195.001021
10.1523/JNEUROSCI.04-01-00013.1984
10.1523/JNEUROSCI.13-05-01993.1993
/ J. Neurosci. / Glutamate receptor‐induced 45Ca2+ accumulation in cortical cell culture correlates with subsequent neuronal degeneration. by Hartley D.M. (1993)10.1002/neu.480251109
10.1038/363266a0
-
HendersonC.E. Bloch‐GallegoE. CamuW.(1997)Purification and culture of embryonic motoneurons inNeural Cell Culture: A Practical Approach(Cohen J. and Wilkin G. eds) pp.69–81.Oxford London.
(
10.1093/oso/9780199634859.003.0006
) 10.1523/JNEUROSCI.17-17-06669.1997
/ J. Neurosci. / Ionized intracellular calcium concentration predicts excitotoxic neuronal death: observations with low‐affinity fluorescent calcium indicators. by Hyrc K. (1997)10.1016/0896-6273(93)90306-C
-
JacobsonM.(1991)Neuroglial ontogeny inDevelopmental Neurobiology pp.95–139. Plenum New York.
(
10.1007/978-1-4757-4954-0_3
) 10.1002/neu.480251108
10.1038/42722
10.1523/JNEUROSCI.18-03-01038.1998
10.1126/science.7725105
10.1523/JNEUROSCI.19-13-05393.1999
/ J. Neurosci. / Functionally antagonistic interactions between the TrkA and p75 neurotrophin receptors regulate sympathetic neuron growth and target innervation. by Kohn J. (1999)10.1002/j.1460-2075.1994.tb06515.x
10.1016/0092-8674(91)90442-2
10.1016/0306-4522(93)90254-D
10.1073/pnas.92.17.8074
10.1523/JNEUROSCI.15-04-03084.1995
/ J. Neurosci. / Differential effects of NGF and BDNF on voltage‐gated calcium currents in embryonic basa forebrain neurons. by Levine E.S. (1995)10.1073/pnas.95.17.10235
10.1523/JNEUROSCI.18-24-10231.1998
10.1016/S0169-328X(97)00349-5
10.1007/BF00939234
10.1007/BF00939232
10.1056/NEJM199403033300907
/ N. Engl. J. Med. / Excitatory amino acids as a final common pathway for neurologic disorders. by Lipton S.A. (1994)10.1016/0092-8674(95)90401-8
10.1006/exnr.1993.1178
10.1046/j.1471-4159.1995.65041740.x
10.1523/JNEUROSCI.18-05-01735.1998
/ J. Neurosci. / Effect of glutamate on dendritic growth in embryonic rat motoneurons. by Metzger F. (1998)10.1016/S0896-6273(00)80586-3
10.1523/JNEUROSCI.18-10-03563.1998
10.1016/S0306-4522(96)00645-8
10.1002/j.1460-2075.1994.tb06421.x
10.1523/JNEUROSCI.14-11-06354.1994
10.1016/S0021-9258(17)41901-6
/ J. Biol. Chem. / Essential role of phosphatidylinositol 3‐kinase in insulin‐induced glucose transport and antilipolysis in rat adipocytes. by Okada T. (1994)10.1016/S0021-9258(17)41900-4
/ J. Biol. Chem. / Blockage of chemotactic peptide‐induced stimulation of neutrophils by wortmannin as a result of selective inhibition of phosphatidylinositol 3‐kinase. by Okada T. (1994)10.1016/0166-2236(89)90021-0
10.1016/S0896-6273(00)80140-3
10.1016/S0896-6273(00)80281-0
10.1016/0014-2999(96)00225-7
10.1126/science.8332899
10.1523/JNEUROSCI.12-05-01882.1992
10.1523/JNEUROSCI.14-07-04385.1994
10.1016/0197-0186(95)00018-4
10.1523/JNEUROSCI.19-11-04337.1999
/ J. Neurosci. / The mitogen‐activated protein kinase cascade couples PKA and PKC to cAMP response element binding protein phosphorylation in area CA1 of hippocampus. by Roberson E.D. (1999)10.1038/370527a0
10.1006/exnr.1997.6737
10.1523/JNEUROSCI.17-12-04633.1997
10.1016/0022-510X(94)90170-8
10.1152/jn.1995.73.3.1223
10.1523/JNEUROSCI.17-12-04744.1997
/ J. Neurosci. / Prevention of normally occurring and deafferentiation‐induced neuronal death in chick brainstem auditory neurons by periodic blockade of AMPA/kainate receptors. by Solum D. (1997)10.1523/JNEUROSCI.19-14-05731.1999
10.1016/0092-8674(91)90396-G
10.1046/j.1471-4159.1997.68010370.x
10.1177/107385849500100506
10.1042/bj2880351
10.1038/382080a0
10.1038/381785a0
10.1016/S0021-9258(17)37680-9
/ J. Biol. Chem. / A specific inhibitor of phosphatidylinositol 3‐kinase, 2‐(4‐morpholinyl)‐8‐phenyl‐4H‐1‐benzopyran‐4‐one (LY294002). by Vlahos C.J. (1994)10.1016/0896-6273(91)90067-A
10.1046/j.1460-9568.1999.00585.x
10.1074/jbc.272.48.30334
10.1523/JNEUROSCI.08-09-03481.1988
/ J. Neurosci. / An immunohistochemical study of the nerve growth factor receptor in developing rats. by Yan Q. (1988)
Dates
Type | When |
---|---|
Created | 22 years, 5 months ago (March 12, 2003, 1:43 a.m.) |
Deposited | 1 year, 7 months ago (Jan. 3, 2024, 11:41 a.m.) |
Indexed | 1 year, 1 month ago (July 29, 2024, 8:32 a.m.) |
Issued | 25 years, 6 months ago (Feb. 1, 2000) |
Published | 25 years, 6 months ago (Feb. 1, 2000) |
Published Online | 23 years, 8 months ago (Dec. 25, 2001) |
Published Print | 25 years, 6 months ago (Feb. 1, 2000) |
@article{Fryer_2000, title={Brain‐Derived Neurotrophic Factor Induces Excitotoxic Sensitivity in Cultured Embryonic Rat Spinal Motor Neurons Through Activation of the Phosphatidylinositol 3‐Kinase Pathway}, volume={74}, ISSN={1471-4159}, url={http://dx.doi.org/10.1046/j.1471-4159.2000.740582.x}, DOI={10.1046/j.1471-4159.2000.740582.x}, number={2}, journal={Journal of Neurochemistry}, publisher={Wiley}, author={Fryer, Hugh J. L. and Wolf, Daniel H. and Knox, Ronald J. and Strittmatter, Stephen M. and Pennica, Diane and O’Leary, Rhona M. and Russell, David S. and Kalb, Robert G.}, year={2000}, month=feb, pages={582–595} }