Background : Visfatin (also known as pre-B-cell colony-enhancing factor, PBEF), is a novel adipokine, such as leptin, resistin, VEGF, IL-6, and FGF-2 that reported to play an important role in proangiogenic adipokine and neuroprotective effect. Methodology/Principal Findings : We investigated whether visfatin gene expression is associated with differentiation of neuronal cells. RT-PCR analysis, morphological observations, and immunostaining revealed that CoCl2, a hypoxic mimetic agent, at 75 microM increased the expression of visfatin gene and induced neurite outgrowth in PC12 rat pheochromocytoma cells. In addition, the treatement of visfatin stimulated neurite outgrowth with the increase in the levels of nerve growth factor (NGF) mRNA and protein. NGF upregulation by visfatin was prevented by an inhibitor of the extracellular signal-regulated kinase 1/2 (ERK1/2) pathway. Furthermore, visfatin-induced neurite outgrowth was also reduced by inhibition of ERK1/2 and NGF receptor TrkA pathways. Conclusions/Significance : Taken together, our results indicate that visfatin-induced neurite outgrowth is composed largely of two sequential steps: the induction of ERK1/2-dependent NGF gene expression by visfatin and the subsequent NGF-induced neuritogenesis. These data further suggest an integral role for visfatin-NGF signaling axis in modulating neurite outgrowth of neuronal cells.
키워드
VisfatinERK1/2NGF
저자
Young-soon KANG [ Department of Dental Pharmacology, School of Dentistry, Pusan National University, Yangsan, 626-770, South Korea. ]
Hyun-Joo PARK [ Department of Dental Pharmacology, School of Dentistry, Pusan National University, Yangsan, 626-770, South Korea. ]
Yun-hee BAE [ Department of Dental Pharmacology, School of Dentistry, Pusan National University, Yangsan, 626-770, South Korea. ]
Hye-Ock JANG [ Department of Dental Pharmacology, School of Dentistry, Pusan National University, Yangsan, 626-770, South Korea. ]
Moon-Kyoung BAE [ Department of Dental Pharmacology, School of Dentistry, Pusan National University, Yangsan, 626-770, South Korea. ]
Soo-kyung BAE [ Department of Dental Pharmacology, School of Dentistry, Pusan National University, Yangsan, 626-770, South Korea. ]
한국생물공학회 [The Korean Society for Biotechnology and Bioengineering]
설립연도
1984
분야
공학>생물공학
소개
이 법인은 생물 공학의 발전과 보급에 이바지하고, 회원 상호 간의 연구 협력과 친목을 도모함을 목적으로 한다
1. 생물공학 분야의 발전을 위한 연구 협력
2. 생물공학의 실용화를 촉진시키기 위한 산학 협동
3. 학술연구 발표회, 강연회, 연수회 등 학술활동의 개최
4. 국,영문 학술지,소식지,학술회의 Proceedings 및 학술도서의 발간
5. 생물공학 발전을 위한 정책 건의
6. 기타 국제 교류 등 본 학회의 목적 달성을 위한 제반 활동