Abstract：
:The rat pheochromocytoma PC12 cell line has been an invaluable model system for studying neuritogenesis. Nerve growth factor (NGF) elicits multiple aspects of neurite outgrowth in PC12 cells. It is therefore difficult to dissect and assign an individual signaling pathway to each stage of neuritogenesis. We have recently reported the isolation of a variant PC12 cell line, PC12-N1 (N1), which spontaneously extends neuritic processes and exhibits an increased sensitivity to NGF. Here, we show that, under different culture conditions, the cells display three distinct phases of neuritogenesis consisting of neurite initiation, rapid neurite elongation, and a maturation process characterized by the thickening of neurites and increase in cell soma sizes. We demonstrate that signaling through ERK, but not p38 or JNK, is required for the spontaneous neurite initiation and extension. Treatment with low concentrations of NGF induces rapid neurite elongation without affecting neurite branching and cell soma sizes. Such a rapid neurite outgrowth can be blocked by the inhibition of ERK, but not JNK, activities. In the presence of higher concentrations of NGF, the N1 cells undergo further differentiation with many characteristics of mature neurons in culture, e.g. larger cell soma and numerous branches/connections. This process can be completely blocked by inhibiting ERK or JNK activities using specific inhibitors. These results suggest that ERK and JNK signals play different roles in neuritogenesis, and that JNK activity is essential in the late stages of neuritogenesis. Furthermore, our results demonstrate that signaling dosage is important in the activation of a specific pathway, leading to distinctive biological outcomes.
journal_name
J Neurochemjournal_title
Journal of neurochemistryauthors
Xiao J,Liu Ydoi
10.1046/j.1471-4159.2003.01961.xkeywords:
subject
Has Abstractpub_date
2003-09-01 00:00:00pages
1516-23issue
6eissn
0022-3042issn
1471-4159pii
1961journal_volume
86pub_type
杂志文章abstract：:Neurosecretory terminals (neurosecretosomes, NSS) were isolated from rat neurohypophyses. High [K+]o or veratridine stimulated secretion of vasopressin and oxytocin by up to approximately 100-fold. Stimulated secretion was dependent on calcium and temperature, and could be elicited from NSS maintained in culture for 4...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1991.tb03779.x
更新日期：1991-08-01 00:00:00
abstract：:A continuous enzyme-linked fluorometric assay was used for determining the characteristics for glutamate exocytosis from guinea-pig cerebrocortical synaptosomes. Ca2+-dependent release can be induced not only by K+, but also by the Na+ channel activator veratridine and the Ca2+ ionophore ionomycin. K+-induced release ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1987.tb03394.x
更新日期：1987-07-01 00:00:00
abstract：:Rats learning the Morris water maze exhibit hippocampal changes in synaptic morphology and physiology that manifest as altered synaptic efficacy. Learning requires structural changes in the synapse, and multiple cell adhesion molecules appear to participate. The activity of these cell adhesion molecules is, in large p...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2005.03565.x
更新日期：2006-03-01 00:00:00
abstract：:We examined the effects of orally administered 5'-cytidinediphosphocholine (CDP-choline) on arterial plasma choline and cytidine levels and on brain phospholipid composition in rats. Animals receiving a single oral dose of 100, 250, or 500 mg/kg showed peak plasma choline levels 6-8 h after drug administration (from 1...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1995.65020889.x
更新日期：1995-08-01 00:00:00
abstract：:A dramatic loss of glutamate transport has been observed in sporadic amyotrophic lateral sclerosis and has been postulated to contribute to the disease. Experimentally, this hypothesis was corroborated by mimicking the chronic loss of glutamate transport in postnatal rat spinal cord organotypic cultures through the us...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1995.65020643.x
更新日期：1995-08-01 00:00:00
abstract：:In rat mesencephalic cell cultures, L-glutamate at concentrations ranging from 100 microM to 1 mM stimulated release of [3H]dopamine that was attenuated by the non-N-methyl-D-aspartate (non-NMDA) receptor antagonist 6,7-dinitroquinoxalinedione, but not by the selective NMDA receptor antagonists (+)-5-methyl-10,11-dihy...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1990.tb08848.x
更新日期：1990-07-01 00:00:00
abstract：:In the last 40 years, especially with the application of new neurochemical and molecular biological techniques, there has been explosive progress in understanding how certain ligands and drugs are transported across the blood-brain barrier and choroid plexus out of brain and CSF. In the CNS, there are several separate...
journal_title：Journal of neurochemistry
pub_type： 杂志文章,评审
doi：10.1111/j.1471-4159.2009.06451.x
更新日期：2010-01-01 00:00:00
abstract：:The natural vitamin E tocotrienols possess properties not shared by tocopherols. Nanomolar alpha-tocotrienol, not alpha-tocopherol, is potently neuroprotective. On a concentration basis, this finding represents the most potent of all biological functions exhibited by any natural vitamin E molecule. We sought to dissec...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2006.04000.x
更新日期：2006-09-01 00:00:00
abstract：:The histamine H1 receptor binding capacity of the amygdalas of amygdaloid kindled rats was studied. In the kindled nonstimulated amygdala, significant decreases in K(D) and B(max) values compared with those of control amygdala were found 1 week after the last kindled seizure. One month after the last kindled seizure, ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1999.0722177.x
更新日期：1999-05-01 00:00:00
abstract：:We investigated changes in the extracellular levels of acetylcholine (ACh) following local application of serotonergic agents to the dorsal hippocampus of freely moving rats by means of perfusion using a microdialysis technique. Perfusion of serotonin (5-HT; 10 microM, for 30 min at a rate of 3 microliters/min), disso...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1994.62051804.x
更新日期：1994-05-01 00:00:00
abstract：:The uptake of 3',3,5-triiodo-L-thyronine (T3) and L-thyroxine (T4) by primary cultures derived from rat brain hemispheres was studied under initial velocity conditions, at 25 degrees C. Uptake of both hormones was carrier mediated and obeyed simple Michaelis-Menten kinetics. The Km of T3 uptake was very similar to tha...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1995.65062549.x
更新日期：1995-12-01 00:00:00
abstract：:We demonstrate that 1-methyl-4-phenylpyridinium (MPP+) is toxic to chick peripheral sympathetic neurons maintained in culture in the presence of nerve growth factor (NGF). When MPP+ was added to the culture medium at the time the neurons were plated, cell loss after 3 days in culture was evident at concentrations as l...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1996.67020557.x
更新日期：1996-08-01 00:00:00
abstract：:Nicotinic acetylcholine receptors (nAChRs) are present in high density in insect nervous tissue and are targeted by neonicotinoid insecticides. Improved understanding of the actions of these insecticides will assist in the development of new compounds. Here, we have used whole-cell patch-clamp recording of cholinergic...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2006.04084.x
更新日期：2006-10-01 00:00:00
abstract：:Glycine and GABA are likely co-transmitters in the spinal cord. Their possible interactions in presynaptic terminals have, however, not been investigated. We studied the effects of glycine on GABA release using superfused mouse spinal cord synaptosomes. Glycine concentration dependently elicited [(3)H]GABA release whi...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.2001.00159.x
更新日期：2001-03-01 00:00:00
abstract：:The binding of L-2-[3H]amino-4-phosphonobutyrate ([3H]L-AP4) was examined in brain sections of wild-type mice and mice lacking the mGluR4 subtype of metabotropic glutamate receptors (mGluRs). Very high relative densities of [3H]L-AP4 binding were observed in the molecular layer of the cerebellar cortex, the nucleus ba...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1999.0720835.x
更新日期：1999-02-01 00:00:00
abstract：:Microglial activation can lead to microglial apoptosis, which may serve to remove highly reactive and possibly neurotoxic microglia. However the loss of microglia may have consequences for future recovery, protection and repair. P53, a nuclear phosphoprotein transcription factor, is critical for activating the express...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2009.06485.x
更新日期：2010-01-01 00:00:00
abstract：:Microvessels were isolated from canine cerebral cortex, and the composition of the endothelial cell membrane was investigated. Endothelial cell membranes were separated from the surrounding basement membrane, solubilized, and subjected to sodium dodecyl sulfate-polyacrylamide gel electrophoresis in 12% gels. Staining ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1983.tb00831.x
更新日期：1983-11-01 00:00:00
abstract：:Exosomes are small extracellular vesicles released by almost all cell types in physiological and pathological conditions. The exosomal potential to unravel disease mechanisms, or to be used as a source of biomarkers, is being explored, in particularly in the field of neurodegenerative diseases. Alzheimer's disease (AD...
journal_title：Journal of neurochemistry
pub_type： 杂志文章,评审
doi：10.1111/jnc.15112
更新日期：2020-07-03 00:00:00
abstract：:Homologues of the Drosophila melanogaster tweety (tty) gene are present in mammals and Caenorhabditis elegans. The encoded proteins have five predicted membrane-spanning regions and recent findings suggest that some family members may be chloride channels. Phylogenetic analysis of the tty family including novel member...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2006.04237.x
更新日期：2007-02-01 00:00:00
abstract：:gamma-Aminobutyric acidB (GABAB) receptor recognition sites that inhibit cyclic AMP formation, open potassium channels, and close calcium channels are coupled to these effector systems by guanine nucleotide binding proteins (G proteins). These G proteins are ADP-ribosylated by islet-activating protein (IAP), also know...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1989.tb11769.x
更新日期：1989-09-01 00:00:00
abstract：:The effect of quisqualate, an excitatory amino acid agonist, on the breakdown of exogenously added phosphatidylinositol was investigated in a membrane preparation from the cerebellum of young rats. Quisqualate stimulated phospholipase C activity in a dose-dependent manner in the presence of guanosine 5'-O-(3-thiotriph...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1992.tb09776.x
更新日期：1992-02-01 00:00:00
abstract：:Dietary n-6 polyunsaturated fatty acid (PUFA) deprivation in rodents reduces brain arachidonic acid (20:4n-6) concentration and 20:4n-6-preferring cytosolic phospholipase A(2) (cPLA(2) -IVA) and cyclooxygenase (COX)-2 expression, while increasing brain docosahexaenoic acid (DHA, 22:6n-3) concentration and DHA-selectiv...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2011.07597.x
更新日期：2012-03-01 00:00:00
abstract：:Psychostimulants are widely abused drugs that may cause addiction in vulnerable individuals. While the reward circuitry of the brain is involved in addiction establishment, various pathways in the brain may provide protection at the molecular level that limits the acute and chronic effects of drugs. These targets may ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/jnc.14959
更新日期：2020-08-01 00:00:00
abstract：:Phospholipids are asymmetrically distributed across the mammalian plasma membrane, with phosphatidylserine (PS) and phosphatidylethanolamine concentrated in the cytoplasmic leaflet of the membrane bilayer and phosphatidylcholine in the exoplasmic leaflet. This asymmetric distribution is dependent on a group of P4 ATPa...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/jnc.14643
更新日期：2019-02-01 00:00:00
abstract：:A diverse group of neurodegenerative diseases - including progressive supranuclear palsy (PSP), corticobasal degeneration and Alzheimer's disease among others, collectively referred to as tauopathies - are characterized by progressive, age-dependent intracellular formations of misfolded protein aggregates that play ke...
journal_title：Journal of neurochemistry
pub_type： 杂志文章,评审
doi：10.1111/j.1471-4159.2010.06875.x
更新日期：2010-09-01 00:00:00
abstract：:There is extensive experimental evidence indicating a crucial role for glutamate in epileptogenesis and epileptic activity. The glial glutamate transporters GLT1 and GLAST are proposed to account for the majority of extracellular glutamate re-uptake. In the present study, polyclonal antibodies specific to GLT1 and GLA...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.2001.00612.x
更新日期：2001-11-01 00:00:00
abstract：:Tyrosine hydroxylase (TH), the rate-limiting enzyme in the biosynthesis of the catecholamines dopamine, noradrenaline and adrenaline, is regulated acutely by feedback inhibition by the catecholamines and relief of this inhibition by phosphorylation of serine 40 (Ser40). Phosphorylation of serine 40 abolishes the bindi...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2008.05509.x
更新日期：2008-08-01 00:00:00
abstract：:The recycling of synaptic vesicles in nerve terminals involves multiple steps, underlies all aspects of synaptic transmission, and is a key to understanding the basis of synaptic plasticity. The development of styryl dyes as fluorescent molecules that label recycling synaptic vesicles has revolutionized the way in whi...
journal_title：Journal of neurochemistry
pub_type： 杂志文章,评审
doi：10.1046/j.1471-4159.1999.0732227.x
更新日期：1999-12-01 00:00:00
abstract：:Voltage-dependent calcium channels from ileal smooth muscle can be affinity-labeled with a [3H]dihydropyridine isothiocyanate radioligand. We examined the binding of this agent to brain membranes, to compare the properties of calcium channel drug binding sites in brain with those previously described in ileum. In brai...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1985.tb07148.x
更新日期：1985-01-01 00:00:00
abstract：:After traumatic brain injury, progesterone has important neuroprotective effects in the nervous system. There is better functional outcome and less oedema formation in pseudopregnant rat females (high levels of endogenous progesterone) than in males. In addition to intracellular progesterone receptors, membrane bindin...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2005.03127.x
更新日期：2005-06-01 00:00:00
