NCOA4-mediated ferritinophagy in macrophages is crucial to sustain erythropoiesis in mice.

NCOA4-mediated ferritinophagy in macrophages is crucial to sustain erythropoiesis in mice.
复制标题

DOI:
10.3324/haematol.2019.241232
复制
发表时间:
2021-03-01
期刊:
影响因子:
10.1
通讯作者:
Carlomagno F
Carlomagno F
中科院分区:
医学1区
文献类型:
--
作者:
Nai A;Lidonnici MR;Federico G;Pettinato M;Olivari V;Carrillo F;Geninatti Crich S;Ferrari G;Camaschella C;Silvestri L;Carlomagno F

文献摘要

参考文献

被引文献

相似文献

核受体共激活剂 4 (NCOA4) 促进铁蛋白降解,C57BL/6 背景下的 Ncoa4-ko 小鼠表现出小红细胞增多症和轻度贫血,缺铁会加剧这种情况。为了了解 NCOA4 介导的铁蛋白自噬的组织特异性贡献,我们探索了 Ncoa4 基因消融在富含铁的 Sv129/J 菌株中的影响。体内铁含量的增加可以保护这些小鼠免受贫血,并且在基础条件下,Sv129/J Ncoa4-ko 小鼠仅表现出小红细胞增多症;然而,当喂食低铁饮食时,与野生型动物相比,它们会出现更严重的贫血。从野生型供体到 Ncoa4-ko 以及从 Ncoa4-ko 到野生型小鼠的相互骨髓 (BM) 移植表明,小红细胞增多症和对缺铁性贫血的易感性取决于 BM 衍生的细胞。在移植动物中,红细胞生成的重建以及红细胞计数和血红蛋白浓度的正常化以相同的速率发生,而与基因型无关。重要的是,与对照组相比,在总体和特定 BM Ncoa4-ko 动物中,NCOA4 损失并不影响缺铁时的终末红细胞生成。相反,在低铁饮食下,与(野生型BM)对照相比,带有Ncoa4-ko BM的野生型动物的脾显示出明显的铁保留,表明前者的巨噬细胞铁释放有缺陷。因此,促红细胞生成素给药未能调动 Ncoa4-ko 动物体内储存的铁。此外,地中海贫血小鼠中 Ncoa4 失活不会使血液学表型恶化。总体而言,我们的数据揭示了巨噬细胞中 NCOA4 介导的铁蛋白自噬对于有利于红细胞生成的铁释放的主要作用,尤其是在铁缺乏的情况下。
Nuclear receptor coactivator 4 (NCOA4) promotes ferritin degradation and Ncoa4-ko mice in a C57BL/6 background show microcytosis and mild anemia, aggravated by iron deficiency. To understand tissue-specific contributions of NCOA4-mediated ferritinophagy we explored the effect of Ncoa4 genetic ablation in the iron-rich Sv129/J strain. Increased body iron content protects these mice from anemia and, in basal conditions, Sv129/J Ncoa4-ko mice show only microcytosis; nevertheless, when fed a low-iron diet they develop a more severe anemia compared to that of wild-type animals. Reciprocal bone marrow (BM) transplantation from wild-type donors into Ncoa4-ko and from Ncoa4-ko into wild-type mice revealed that microcytosis and susceptibility to iron deficiency anemia depend on BM-derived cells. Reconstitution of erythropoiesis with normalization of red blood count and hemoglobin concentration occurred at the same rate in transplanted animals independently of the genotype. Importantly, NCOA4 loss did not affect terminal erythropoiesis in iron deficiency, both in total and specific BM Ncoa4-ko animals compared to controls. On the contrary, upon a low iron diet, spleen from wild-type animals with Ncoa4-ko BM displayed marked iron retention compared to (wild-type BM) controls, indicating defective macrophage iron release in the former. Thus, erythropoietin administration failed to mobilize iron from stores in Ncoa4-ko animals. Furthermore, Ncoa4 inactivation in thalassemic mice did not worsen the hematologic phenotype. Overall our data reveal a major role for NCOA4-mediated ferritinophagy in macrophages to favor iron release for erythropoiesis, especially in iron deficiency.
DOI: 10.1016/j.cmet.2008.12.012
发表时间: 2009-02
期刊: Cell metabolism
影响因子: 29
作者:
Shah YM;Matsubara T;Ito S;Yim SH;Gonzalez FJ
通讯作者: Gonzalez FJ
铁蛋白铁调节剂PCBP1和NCOA4对发育中的红细胞中的细胞铁状态反应。
DOI: 10.1016/j.bcmd.2017.09.009
发表时间: 2018-03
期刊: Blood cells, molecules & diseases
影响因子: --
作者:
Ryu MS;Duck KA;Philpott CC
通讯作者: Philpott CC
DOI: 10.1038/nature13148
发表时间: 2014-05-01
期刊: NATURE
影响因子: 64.8
作者:
Mancias, Joseph D.;Wang, Xiaoxu;Gygi, Steven P.;Harper, J. Wade;Kimmelman, Alec C.
通讯作者: Kimmelman, Alec C.
DOI: 10.1038/ng.2996
发表时间: 2014-07
期刊: Nature genetics
影响因子: 30.8
作者:
Kautz L;Jung G;Valore EV;Rivella S;Nemeth E;Ganz T
通讯作者: Ganz T
DOI: 10.1182/blood-2012-01-401885
发表时间: 2012-05-24
期刊: BLOOD
影响因子: 20.3
作者:
Nai, Antonella;Pagani, Alessia;Camaschella, Clara
通讯作者: Camaschella, Clara