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論文
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片桐, 孝和 ; Katagiri, Takamasa
概要:
金沢大学医薬保健研究域保健学系<br />骨髄不全症例の約60％で検出されるPNH形質血球をマーカーとして、造血幹細胞の分化造血制御について考察した。患者の骨髄中に存在している様々な造血前駆細胞ごとにPNH形質血球の割合を調べたところ、CM
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Pにおいては10%未満であったのに対して、以降の造血前駆細胞においては末梢血中の骨髄球系細胞とほぼ同等の割合でPNH形質血球が認められた。PNH形質血球の選択的増殖における付加的遺伝子変異を確認するための遺伝子解析では、特定のサイトカインの発現が亢進していることを明らかにした。以上より、ヒト造血の系列は個々の造血幹細胞または骨髄内のサイトカインを含む複合的な因子により規定されると結論付けた。<br />The regulation of HSC (Haematopietic stem cell) differentiation was assessed by FCM (Flow cytometry) with a marker, PNH (paroxysmal nocturnal hemoglobinuria)-type cell, which was detected in 60 perentage of bone marrow failure patients. As investigated the percentage of PNH-type cell in various lineages of HSPC (haematopoietc stem progenitor cell), PNH-type cells were detected only 10 perentage in CMP (common myelod progenitors) fraction, however, the same percentage was detected in GMP and MEP as myeloid cells in peripheral blood. Additional genetic analysis to check driver mutation genes effect on the selective growth of PNH-type cell revealed the expression of a specific cytokine was enhanced. From the above, I concluded the differentiation of human HSC was regulated by some complicated factors including HSCs or some cytokines in bone marrow.<br />研究課題/領域番号:26860363, 研究期間(年度):2014-04-01 - 2017-03-31
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論文
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高松, 博幸 ; Takamatsu, Hiroyuki
概要:
モエシンKOマウスは以下の表現型異常が認められた。末梢血白血球減少、貧血、体重減少と脾腫大、骨髄造血幹細胞の減少、骨髄・脾臓のB細胞・形質細胞の減少とT細胞の増加、脾臓の濾胞構造の不明瞭化である。一方、モエシンKOマウスにモエシン蛋白質を免
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疫したところ、抗モエシン抗体が産生された。前処置後の野生型マウスに抗モエシン抗体を産生する脾臓・骨髄細胞を骨髄内移植したところ、野生型マウスに抗モエシン抗体産生、TNFαとIFNγ濃度の上昇、白血球減少がみとめられたが、血小板減少と貧血は認められなかった。<br />Moesin KO mice grew normally. However, the body weight of moesin KO mice was lower than that of WT mice. Complete blood counts of moesin KO mice revealed leukocytopenia and macrocytic anemia ; platelet counts were comparable. Moesin KO mouse spleens were heavier than those of WT mice and follicle formation in spleens of moesin KO mice were obscure with increased CD3^+lymphocytes and reduced CD19^+lymphocytes as compared with WT mice. BM of moesin KO mice was normocellular and characterized by increased CD3^+lymphocytes and reduced CD19^+lymphocytes as seen in spleens of moesin KO mice. The number of lineage negative, Sca-1^+, and c-Kit^+(LSK) mouse HSCs in moesin KO BM tended to be lower than that of WT mice. Moesin KO spleen/BM cells capable of producing anti-moesin antibodies were infused into BM of WT B6 male mice. Transplanted mice showed leukocytopenia and increase of TNFαand IFNγin plasma compared to WT B6 male mice transplanted with WT spleen/BM cells, but anemia and thrombocytopenia were not observed.<br />研究課題/領域番号:21591237, 研究期間(年度):2009-2011
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