NELL2 gene as regulator of cell cycle in neuron differentiation.
10.3345/kjp.2006.49.10.1100
- Author:
Mi Rim JOUNG
1
;
Yeon Mi OH
;
Woo Saeng PARK
;
Sang Kyu PARK
Author Information
1. Department of Pediatrics, College of Medicine, Ulsan University Hospital, Ulsan, Korea. sang@uuh.ulsan.kr
- Publication Type:Case Report
- Keywords:
NELL2;
Cell cycle;
Neuron differentiation
- MeSH:
Apoptosis;
Cell Count;
Cell Cycle*;
DNA Fragmentation;
G1 Phase;
Neurons*;
Physiology;
Transfection
- From:Korean Journal of Pediatrics
2006;49(10):1100-1105
- CountryRepublic of Korea
- Language:Korean
-
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.
