Constrained chromatin accessibility in PU.1-mutated agammaglobulinemia patients.
Constrained chromatin accessibility in PU.1-mutated agammaglobulinemia patients.
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PU.1突变无丙种球蛋白血症患者的染色质可及性受限
DOI:
10.1084/jem.20201750
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发表时间:
2021-07-05
期刊:
影响因子:
--
通讯作者:
Romberg N
中科院分区:
文献类型:
--
作者:
Le Coz C;Nguyen DN;Su C;Nolan BE;Albrecht AV;Xhani S;Sun D;Demaree B;Pillarisetti P;Khanna C;Wright F;Chen PA;Yoon S;Stiegler AL;Maurer K;Garifallou JP;Rymaszewski A;Kroft SH;Olson TS;Seif AE;Wertheim G;Grant SFA;Vo LT;Puck JM;Sullivan KE;Routes JM;Zakharova V;Shcherbina A;Mukhina A;Rudy NL;Hurst ACE;Atkinson TP;Boggon TJ;Hakonarson H;Abate AR;Hajjar J;Nicholas SK;Lupski JR;Verbsky J;Chinn IK;Gonzalez MV;Wells AD;Marson A;Poon GMK;Romberg N
PU.1 haploinsufficiency reduces the access of key transcription factors to open chromatin regions, undermines essential stage-specific transcriptional programs, and arrests human B cell development at the pro– to pre–B cell transition. The pioneer transcription factor (TF) PU.1 controls hematopoietic cell fate by decompacting stem cell heterochromatin and allowing nonpioneer TFs to enter otherwise inaccessible genomic sites. PU.1 deficiency fatally arrests lymphopoiesis and myelopoiesis in mice, but human congenital PU.1 disorders have not previously been described. We studied six unrelated agammaglobulinemic patients, each harboring a heterozygous mutation (four de novo, two unphased) of SPI1, the gene encoding PU.1. Affected patients lacked circulating B cells and possessed few conventional dendritic cells. Introducing disease-similar SPI1 mutations into human hematopoietic stem and progenitor cells impaired early in vitro B cell and myeloid cell differentiation. Patient SPI1 mutations encoded destabilized PU.1 proteins unable to nuclear localize or bind target DNA. In PU.1-haploinsufficient pro–B cell lines, euchromatin was less accessible to nonpioneer TFs critical for B cell development, and gene expression patterns associated with the pro– to pre–B cell transition were undermined. Our findings molecularly describe a novel form of agammaglobulinemia and underscore PU.1’s critical, dose-dependent role as a hematopoietic euchromatin gatekeeper.
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DOI:
10.1093/bioinformatics/btu638
发表时间:
2015-01-15
期刊:
Bioinformatics (Oxford, England)
影响因子:
--
作者:
Anders S;Pyl PT;Huber W
通讯作者:
Huber W
影响因子:
2.3
作者:
Ciau-Uitz, Aldo;Wang, Lu;Liu, Feng
通讯作者:
Liu, Feng
影响因子:
16
作者:
Heinz S;Benner C;Spann N;Bertolino E;Lin YC;Laslo P;Cheng JX;Murre C;Singh H;Glass CK
通讯作者:
Glass CK
DOI:
10.1073/pnas.022042699
发表时间:
2002-03-19
影响因子:
11.1
作者:
Facchetti, F;Cella, M;Colonna, M
通讯作者:
Colonna, M
影响因子:
16.6
作者:
Demaree B;Delley CL;Vasudevan HN;Peretz CAC;Ruff D;Smith CC;Abate AR
通讯作者:
Abate AR