Effect of scoparone on neurite outgrowth in PC12 cells. 2008

Yoo Jung Yang, and Hak Ju Lee, and Don Ha Choi, and Hai Shan Huang, and Sung Cil Lim, and Myung Koo Lee
College of Pharmacy and Research Center for Bioresource and Health, Chungbuk National University, Cheongju 361-763, Republic of Korea.

The neurite outgrowth-promoting effects of scoparone isolated from the stem bark of Liriodendron tulipifera were investigated in PC12 cells. At a concentration of 200 microM, scoparone markedly induced neurite outgrowth from PC12 cells. Scoparone at 200 microM also enhanced the outgrowth of neurites from cells in the presence of nerve growth factor (NGF, 2 ng/ml). The levels of intracellular cyclic AMP and concentration of Ca2+ were also increased by 200 microM scoparone. In addition, scoparone at 200 microM increased the activities of extracellular signal-regulated protein kinase (ERK), cyclic AMP-dependent protein kinase (PKA), protein kinase C (PKC) and Ca2+/calmodulin kinase II (CaMK II). However, scoparone-induced neurite outgrowth was blocked by a mitogen-activated protein kinase inhibitor (U0126), a PKA inhibitor (H89), a PKC inhibitor (GF109203X) and a CaMK II inhibitor (KN62). These kinase inhibitors also reduced the scoparone-induced neurite outgrowth associated with NGF. These results suggest that scoparone can induce neurite outgrowth by stimulating the upstream steps of ERK, PKA, PKC and CaMK II in PC12 cells.

UI MeSH Term Description Entries
D002118 Calcium A basic element found in nearly all tissues. It is a member of the alkaline earth family of metals with the atomic symbol Ca, atomic number 20, and atomic weight 40. Calcium is the most abundant mineral in the body and combines with phosphorus to form calcium phosphate in the bones and teeth. It is essential for the normal functioning of nerves and muscles and plays a role in blood coagulation (as factor IV) and in many enzymatic processes. Coagulation Factor IV,Factor IV,Blood Coagulation Factor IV,Calcium-40,Calcium 40,Factor IV, Coagulation
D003374 Coumarins Synthetic or naturally occurring substances related to coumarin, the delta-lactone of coumarinic acid. 1,2-Benzopyrone Derivatives,1,2-Benzopyrones,Coumarin Derivative,Coumarine,1,2-Benzo-Pyrones,Benzopyran-2-ones,Coumarin Derivatives,Coumarines,1,2 Benzo Pyrones,1,2 Benzopyrone Derivatives,1,2 Benzopyrones,Benzopyran 2 ones,Derivative, Coumarin,Derivatives, 1,2-Benzopyrone,Derivatives, Coumarin
D004305 Dose-Response Relationship, Drug The relationship between the dose of an administered drug and the response of the organism to the drug. Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response
D004347 Drug Interactions The action of a drug that may affect the activity, metabolism, or toxicity of another drug. Drug Interaction,Interaction, Drug,Interactions, Drug
D004791 Enzyme Inhibitors Compounds or agents that combine with an enzyme in such a manner as to prevent the normal substrate-enzyme combination and the catalytic reaction. Enzyme Inhibitor,Inhibitor, Enzyme,Inhibitors, Enzyme
D000242 Cyclic AMP An adenine nucleotide containing one phosphate group which is esterified to both the 3'- and 5'-positions of the sugar moiety. It is a second messenger and a key intracellular regulator, functioning as a mediator of activity for a number of hormones, including epinephrine, glucagon, and ACTH. Adenosine Cyclic 3',5'-Monophosphate,Adenosine Cyclic 3,5 Monophosphate,Adenosine Cyclic Monophosphate,Adenosine Cyclic-3',5'-Monophosphate,Cyclic AMP, (R)-Isomer,Cyclic AMP, Disodium Salt,Cyclic AMP, Monoammonium Salt,Cyclic AMP, Monopotassium Salt,Cyclic AMP, Monosodium Salt,Cyclic AMP, Sodium Salt,3',5'-Monophosphate, Adenosine Cyclic,AMP, Cyclic,Adenosine Cyclic 3',5' Monophosphate,Cyclic 3',5'-Monophosphate, Adenosine,Cyclic Monophosphate, Adenosine,Cyclic-3',5'-Monophosphate, Adenosine,Monophosphate, Adenosine Cyclic
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D000959 Antihypertensive Agents Drugs used in the treatment of acute or chronic vascular HYPERTENSION regardless of pharmacological mechanism. Among the antihypertensive agents are DIURETICS; (especially DIURETICS, THIAZIDE); ADRENERGIC BETA-ANTAGONISTS; ADRENERGIC ALPHA-ANTAGONISTS; ANGIOTENSIN-CONVERTING ENZYME INHIBITORS; CALCIUM CHANNEL BLOCKERS; GANGLIONIC BLOCKERS; and VASODILATOR AGENTS. Anti-Hypertensive,Anti-Hypertensive Agent,Anti-Hypertensive Drug,Antihypertensive,Antihypertensive Agent,Antihypertensive Drug,Anti-Hypertensive Agents,Anti-Hypertensive Drugs,Anti-Hypertensives,Antihypertensive Drugs,Antihypertensives,Agent, Anti-Hypertensive,Agent, Antihypertensive,Agents, Anti-Hypertensive,Agents, Antihypertensive,Anti Hypertensive,Anti Hypertensive Agent,Anti Hypertensive Agents,Anti Hypertensive Drug,Anti Hypertensive Drugs,Anti Hypertensives,Drug, Anti-Hypertensive,Drug, Antihypertensive,Drugs, Anti-Hypertensive,Drugs, Antihypertensive
D013997 Time Factors Elements of limited time intervals, contributing to particular results or situations. Time Series,Factor, Time,Time Factor
D016501 Neurites In tissue culture, hairlike projections of neurons stimulated by growth factors and other molecules. These projections may go on to form a branched tree of dendrites or a single axon or they may be reabsorbed at a later stage of development. "Neurite" may refer to any filamentous or pointed outgrowth of an embryonal or tissue-culture neural cell. Neurite

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