2014 Fiscal Year Final Research Report
Telomere and telomerase dynamics of the medaka, Oryzias latipes
| Project/Area Number |
25830065
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Laboratory animal science
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| Research Institution | Nippon Veterinary and Life Science University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Keywords | メダカ / テロメア / テロメレース / 成長 / 老化 |
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| Outline of Final Research Achievements |
In the present study I measured telomere length, telomerase activity and body growth of Oryzias latipes from the embryo stage until senescence. During the rapid growth stage (age 0 - 7 months), telomeres shortened in parallel with decreasing telomerase activity. Then, during adolescence (age 7 months - 1 year), telomeres lengthened quickly as growth slowed and telomerase activity increased. In the adult stage (age 1 - 4 years) characterized by little growth, telomerase activity decreased gradually and telomeres shortened. My data indicate that telomere attrition and restoration are linked to growth and telomerase activity, and suggest that critical loss of telomere homeostasis is associated with mortality in this animal.
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| Free Research Field |
生物学
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