Loss of ASXL1 in the bone marrow niche dysregulates hematopoietic stem and progenitor cell fates.
Loss of ASXL1 in the bone marrow niche dysregulates hematopoietic stem and progenitor cell fates.
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骨髓生态位中 ASXL1 的缺失会导致造血干细胞和祖细胞的命运失调
DOI:
10.1038/s41421-017-0004-z
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发表时间:
2018
期刊:
影响因子:
33.5
通讯作者:
Yang FC
中科院分区:
文献类型:
--
作者:
Zhang P;Chen Z;Li R;Guo Y;Shi H;Bai J;Yang H;Sheng M;Li Z;Li Z;Li J;Chen S;Yuan W;Cheng T;Xu M;Zhou Y;Yang FC
Somatic or de novo mutations ofAdditional sex combs-like 1(ASXL1) frequently occur in patients with myeloid malignancies or Bohring-Opitz syndrome, respectively. We have reported that global loss ofAsxl1leads to the development of myeloid malignancies and impairs bone marrow stromal cell (BMSC) fates in mice. However, the impact ofAsxl1deletion in the BM niche on hematopoiesis remains unclear. Here, we showed that BMSCs derived from chronic myelomonocytic leukemia patients had reduced expression ofASXL1, which impaired the maintaining cord blood CD34+cell colony-forming capacity with a myeloid differentiation bias. Furthermore,Asxl1deletion in the mouse BMSCs altered hematopoietic stem and progenitor cell (HSC/HPC) pool and a preferential myeloid lineage increment. Immunoprecipitation and ChIP-seq analyses demonstrated a novel interaction of ASXL1 with the core subunits of RNA polymerase II (RNAPII) complex. Convergent analyses of RNA-seq and ChIP-seq data revealed that loss ofAsxl1deregulated RNAPII transcriptional function and altered the expression of genes critical for HSC/HPC maintenance, such asVcam1. Altogether, our study provides a mechanistic insight into the function of ASXL1 in the niche to maintain normal hematopoiesis; andASXL1alteration in, at least, a subset of the niche cells induces myeloid differentiation bias, thus, contributes the progression of myeloid malignancies.
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影响因子:
50.3
作者:
Abdel-Wahab O;Adli M;LaFave LM;Gao J;Hricik T;Shih AH;Pandey S;Patel JP;Chung YR;Koche R;Perna F;Zhao X;Taylor JE;Park CY;Carroll M;Melnick A;Nimer SD;Jaffe JD;Aifantis I;Bernstein BE;Levine RL
通讯作者:
Levine RL
影响因子:
64.5
作者:
Kiel, MJ;Yilmaz, ÖH;Morrison, SJ
通讯作者:
Morrison, SJ
影响因子:
8.8
作者:
Katoh M
通讯作者:
Katoh M
DOI:
10.1084/jem.20131141
发表时间:
2013-11-18
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Abdel-Wahab O;Gao J;Adli M;Dey A;Trimarchi T;Chung YR;Kuscu C;Hricik T;Ndiaye-Lobry D;Lafave LM;Koche R;Shih AH;Guryanova OA;Kim E;Li S;Pandey S;Shin JY;Telis L;Liu J;Bhatt PK;Monette S;Zhao X;Mason CE;Park CY;Bernstein BE;Aifantis I;Levine RL
通讯作者:
Levine RL
DOI:
10.1126/science.1190614
发表时间:
2010-10-29
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Feng S;Jacobsen SE;Reik W
通讯作者:
Reik W