The IL-33 Receptor/ST2 acts as a positive regulator of functional mouse bone marrow hematopoietic stem and progenitor cells.

The IL-33 Receptor/ST2 acts as a positive regulator of functional mouse bone marrow hematopoietic stem and progenitor cells.
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DOI:
10.1016/j.bcmd.2020.102435
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发表时间:
2020-09
期刊:
Blood cells, molecules & diseases
影响因子:
--
通讯作者:
Broxmeyer HE
Broxmeyer HE
中科院分区:
其他
文献类型:
--
作者:
Capitano ML;Griesenauer B;Guo B;Cooper S;Paczesny S;Broxmeyer HE

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关于 IL-33 受体/ST2 在调节小鼠骨髓 (BM) 造血干 (HSC) 和祖 (HPC) 细胞中的潜在作用的信息很少。使用功能测定比较st2−/−和野生型(WT)对照小鼠的BM,发现在使用同源小鼠的竞争性再增殖试验中,st2−/− BM细胞的移植能力比WT BM差,移植后B、T和骨髓细胞的重建没有变化。 st2−/− 小鼠的 BM 也比 WT BM 具有更少的粒细胞-巨噬细胞、红细胞和多能祖细胞,并且与 WT 小鼠的快速循环 HPC 相比,这些 st2−/− HPC 处于缓慢循环状态。虽然 HSC 和 HPC 的功能评估表明 ST2 对 HSC 的调节具有积极影响,但与 WT BM 相比,仅使用移植前 HSC 和 HPC 群体的表型分析,我们无法发现 st2−/− 的差异,再次证明 HSC 和 HPC 的表型分析并不总是概括这些未成熟造血细胞的功能评估。 ST2 是造血的正调节剂。 ST2-/- 是造血作用的正调节剂 st2-/- 造血干细胞数量的免疫表型不能概括这些细胞的功能能力。
There is a paucity of information on a potential role for the IL-33 receptor/ST2 in the regulation of mouse bone marrow (BM) hematopoietic stem (HSC) and progenitor (HPC) cells. Comparing the BM of st2−/− and wild type (WT) control mice using functional assays, it was found that st2−/− BM cells had poorer engrafting capacity than WT BM in a competitive repopulating assay using congenic mice, with no changes in reconstitution of B-, T- and myeloid cells following transplantation. The BM of st2−/− mice also had fewer granulocyte-macrophage, erythroid, and multipotential progenitors than that of WT BM and these st2−/− HPC were in a slow cycling state compared to that of the rapidly cycling HPC of the WT mice. While functional assessment of HSC and HPC demonstrated that ST2 has a positive influence on regulation of HSC, we could not pick up differences in st2−/− compared to WT BM using only phenotypic analysis of HSC and HPC populations prior to transplantation, again demonstrating that phenotypic analysis of HSC and HPC do not always recapitulate the functional assessments of these immature hematopoietic cells. ST2 is a positive modulator of hematopoiesis. ST2-/- is a positive modulator of hematopoiesis Immunophenotyping of st2-/- hematopoietic stem cell numbers does not recapitulate functional capability of these cells.
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