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Identification of functional cooperative mutations of SETD2 in human acute leukemia

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单位: [1]Chinese Acad Med Sci, Inst Hematol, State Key Lab Expt Hematol, Tianjin, Peoples R China; [2]Chinese Acad Med Sci, Blood Dis Hosp, Tianjin, Peoples R China; [3]Chinese Acad Med Sci, Ctr Stem Cell Med, Tianjin, Peoples R China; [4]Peking Union Med Coll, Tianjin, Peoples R China; [5]Chinese Acad Sci, Beijing Inst Genom, Lab Genome Variat & Precis Biomed, Beijing, Peoples R China; [6]Cincinnati Childrens Hosp Med Ctr, Div Pathol, Cincinnati, OH 45229 USA; [7]Cincinnati Childrens Hosp Med Ctr, Div Pathol, Cincinnati, OH 45229 USA; [8]Cincinnati Childrens Hosp, Div Canc Biol, Cincinnati, OH USA; [9]Univ Chinese Acad Sci, Beijing, Peoples R China; [10]Huazhong Univ Sci & Technol, TongJi Med Coll, TongJi Hosp, Dept Hematol, Wuhan 430074, Hubei, Peoples R China; [11]Second Mil Med Univ, Changhai Hosp, Dept Hematol, Shanghai, Peoples R China; [12]Ann & Robert H Lurie Childrens Hosp, Chicago Res Ctr, Mary Ann & J Milburn Smith Child Hlth Res Program, Chicago, IL USA; [13]Northwestern Univ, Dept Pediat, Feinberg Sch Med, Chicago, IL 60611 USA
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Acute leukemia characterized by chromosomal rearrangements requires additional molecular disruptions to develop into full-blown malignancy(1,2), yet the cooperative mechanisms remain elusive. Using whole-genome sequencing of a pair of monozygotic twins discordant for MLL (also called KMT2A) gene-rearranged leukemia, we identified a transforming MLL-NRIP3 fusion gene(3) and biallelic mutations in SETD2 (encoding a histone H3K36 methyltransferase)(4). Moreover, loss-of-function point mutations in SETD2 were recurrent (6.2%) in 241 patients with acute leukemia and were associated with multiple major chromosomal aberrations. We observed a global loss of H3K36 trimethylation (H3K36me3) in leukemic blasts with mutations in SETD2. In the presence of a genetic lesion, downregulation of SETD2 contributed to both initiation and progression during leukemia development by promoting the self-renewal potential of leukemia stem cells. Therefore, our study provides compelling evidence for SETD2 as a new tumor suppressor. Disruption of the SETD2-H3K36me3 pathway is a distinct epigenetic mechanism for leukemia development.

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基金编号: 2011CB964801 2012CB966600 2010DFB30270 2014CB542001 81090411 81130074 30825017 81000220 81070442 91331111 09ZCZDSF03800 XDA01010305 1027-08 P30DK090971

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出版当年[2013]版:
大类 | 1 区 生物
小类 | 1 区 遗传学
最新[2025]版:
大类 | 1 区 生物学
小类 | 1 区 遗传学
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出版当年[2012]版:
Q1 GENETICS & HEREDITY
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Q1 GENETICS & HEREDITY

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第一作者单位: [1]Chinese Acad Med Sci, Inst Hematol, State Key Lab Expt Hematol, Tianjin, Peoples R China; [2]Chinese Acad Med Sci, Blood Dis Hosp, Tianjin, Peoples R China; [3]Chinese Acad Med Sci, Ctr Stem Cell Med, Tianjin, Peoples R China; [4]Peking Union Med Coll, Tianjin, Peoples R China;
通讯作者:
通讯机构: [1]Chinese Acad Med Sci, Inst Hematol, State Key Lab Expt Hematol, Tianjin, Peoples R China; [2]Chinese Acad Med Sci, Blood Dis Hosp, Tianjin, Peoples R China; [3]Chinese Acad Med Sci, Ctr Stem Cell Med, Tianjin, Peoples R China; [4]Peking Union Med Coll, Tianjin, Peoples R China;
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