| NELL2 gene as regulator of cell cycle in neuron differentiation |
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Mi Rim Joung, Yeon Mi Oh, Woo Saeng Park, Sang Kyu Park |
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Department of Pediatrics, College of Medicine, Ulsan University Hospital, Ulsan, Korea |
| 신경세포 분화에서 세포주기 조절인자로서의 NELL2 유전자의 역할 |
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정미림, 오연미, 박우생, 박상규 |
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울산대학교 의과대학 소아과학교실 |
Correspondence:
Sang Kyu Park, Email: sang@uuh.ulsan.kr
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| Abstract |
Purpose
: Because NELL2 expression is strictly restricted only in neurons in developing and post- differentiated neural tissues, it is thought to be involved in the neuronal differentiation during development and in the maintenance of neuronal physiology in the post-differentiated neurons. In this study, we examined whether NELL2 is involved in the regulation of cell cycle and apoptosis in the hippocampal neuroprogenitor HiB5 cells.
Methods
: Effects of NELL2 on the cultured HiB5 cell numbers, DNA fragmentation, and proteins involved in the regulation of the cell cycle were measured.
Results
: NELL2 induced a decrease in cell numbers and an increase in G1 phase arrest. Moreover, transfection of NELL2 resulted in an increase of DNA fragmentation that shows an evidence of apoptosis. Contents of proteins involved in the regulation of cell cycle were also changed by transfection of NELL2 expression vectors.
Conclusion
: This study suggests that NELL2 plays an important role in the regulation of cell cycle and apoptosis of neurons. |
| Key Words:
NELL2 , Cell cycle , Neuron differentiation |
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