| Project/Area Number |
23650232
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Laboratory animal science
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| Research Institution | Kanazawa University |
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Principal Investigator |
ASANO Masahide 金沢大学, 学際科学実験センター, 教授 (50251450)
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| Co-Investigator(Kenkyū-buntansha) |
HASHIMOTO Noriyoshi 金沢大学, 金沢大学, 准教授 (50242524)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | 糖鎖 / 骨髄幹細胞 / 骨髄移植 / ホーミング |
|---|
| Research Abstract |
We have found that beta4GalT-I-deficient bone marrow (BM) cells cannot engraft in the BM of X-ray radiated wild-type mice. Not only beta4GalT-I-deficient BM cells cannot establish hematopoietic system of recipient mice, but also their engraftment into the BM shortly after BM transfer was markedly reduced, indicating that homing of hematopoietic stem cells (HSC) into the BM was impaired. We next investigated mice having a point mutation in the GNE gene, that encodes a key enzyme for sialic acids biosynthesis. Homing efficiency of BM cells from GNE point-mutant mice was reduced to half that of wild-type mice, although the reduction was not prominent as in beta4GalT-I-deficient mice. These results suggest that sialic acids at the terminus of carbohydrate chains also play a role in HSC homing.
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