2016 Fiscal Year Final Research Report
The spleen is an ideal site for inducing transplanted islet graft expansion
| Project/Area Number |
26293294
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
General surgery
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| Research Institution | Fukuoka University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
伊東 威 福岡大学, 医学部, 講師 (70634400)
西中村 瞳 福岡大学, 医学部, 助教 (90597692)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 膵島移植 / 膵島再生 / 膵島移植部位 / 脾臓 / DAMPs / IBMIR / Rrm2b, Pla2g2d / Tlx1(Hox11) |
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| Outline of Final Research Achievements |
Previously, we reported that T cell leukemia homeobox 1 (Tlx1)+ stem cells in the spleen effectively regenerated into insulin-producing cells in the pancreas of non-obese diabetic mice with end-stage disease. Thus, we investigated the spleen as a potential alternative islet transplantation site. Streptozotocin-induced diabetic C57BL/6 mice received syngeneic islets into the portal vein (PV), beneath the kidney capsule (KC), or into the spleen (SP). Some plasma inflammatory cytokine levels in the SP group were significantly lower than those of the PV group after receiving a marginal number of islets, indicating reduced inflammation in the SP group. Insulin contents were increased 280 days after islet transplantation compared with those immediately following transplantation (p<0.05). Additionally, Tlx1-related genes, including Rrm2b and Pla2g2d, were up-regulated, which indicates that islet grafts expanded in the spleen.
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| Free Research Field |
再生医学、幹細胞治療、膵島移植、
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