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http://dx.doi.org/10.5352/JLS.2015.25.3.263

Role of Coelomocytes in Stress Response and Fertility in Caenorhabditis elegans  

Park, Jin-Kook (Department of Medical Biotechnology, College of Medical Sciences, Soonchunhyang University)
Hwang, Jin-Kyu (Department of Medical Biotechnology, College of Medical Sciences, Soonchunhyang University)
Song, Keon-Hyoung (Department of Pharmaceutical Engineering, College of Medical Sciences, Soonchunhyang University)
Park, Sang-Kyu (Department of Medical Biotechnology, College of Medical Sciences, Soonchunhyang University)
Publication Information
Journal of Life Science / v.25, no.3, 2015 , pp. 263-268 More about this Journal
Abstract
Coelomocytes are specialized cells that continually and nonspecifically scavenge fluid from the body cavity through endocytosis in Caenorhabditis elegans. Our previous study revealed that coelmocytes were specifically required for dietary-restriction-induced longevity in C. elegans. In the present study, we examined the effect of coelomocyte ablation on the response to environmental stressors and reproduction in C. elegans. Coelomocytes were ablated using diphtheria toxin specifically expressed in coelomocytes. After exposing worms to 20 J/cm2/min of ultraviolet irradiation in vivo, the survival of the worms was monitored daily. To examine their response to heat stress, their survival after 10 h of 35℃ heat shock was measured. Oxidative stress was induced using paraquat, and the susceptibility to oxidative stress was compared between wild-type control and coelomocyte-ablated worms. The total number of progeny produced was counted, and the time-course distribution of the progeny was determined. The worms with ablated coelomocytes showed reduced resistance to ultraviolet irradiation, but the ablation of coelomocytes had no effect on their response to heat or oxidative stress. The number of progeny produced during the gravid period was significantly decreased in the coelomocyte-ablated worms. These findings suggest that coelomocytes specifically modulate the response to ultraviolet irradiation and are required for normal reproduction in C. elegans. The findings could contribute to understanding of the mechanisms underlying dietary-restriction-induced longevity.
Keywords
C. elegans; coelomocyte; dietary restriction; fertility; UV irradiation;
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