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·820 · 南 京 医 科 大 学 学 报 2022年6月
本研究发现通过在巨核细胞发育的早期阶段 [5] ZHENG Z,WANG L,CHENG S,et al. Autophagy and
用Rap诱导自噬后,CLEC⁃2的缺陷显著降低多倍体 leukemia[J]. Adv Exp Med Biol,2020,1207:601-613
巨核细胞的数目,说明在 Rap 引起高倍体成熟巨核 [6] YANG X,YE F,JING Y,et al. Autophagy and tumour
细胞形成受阻过程中,巨核细胞 CLEC⁃2 发挥重要 stem cells[J]. Adv Exp Med Biol,2020,1207:301-313
[7] ZECCHINI S,GIOVARELLI M,PERROTTA C,et al. Au⁃
作用。本研究结果也发现,在胎肝造血干细胞阶段
tophagy controls neonatal myogenesis by regulating the
干扰自噬,细胞周期相关蛋白Cyclin D1和Cyclin D2
GH⁃IGF1 system through a NFE2L2⁃ and DDIT3⁃mediat⁃
的表达均下调,而 CLEC⁃2 的缺陷加剧了这种反
ed mechanism[J]. Autophagy,2019,15(1):58-77
应。另外,也有其他报道表明,在造血干祖细胞中, [8] GE C,AN N,LI L,et al. Autophagy⁃deficient mice are
自噬能通过调节 Cyclin D3 调控细胞的 G1/S 期转化 more susceptible to engrafted leukemogenesis[J]. Blood
来维持正常的造血稳态 [15] 。因此,巨核细胞CLEC⁃2 Cells Mol Dis,2019,77:129-136
调控自噬⁃细胞周期信号通路的关系仍需要进一步 [9] MORTENSEN M,SOILLEUX E J,DJORDJEVIC G,et al.
探究。 The autophagy protein Atg7 is essential for hematopoietic
stem cell maintenance[J]. J Exp Med,2011,208(3):
综上,在巨核细胞自噬过程中,血小板 CLEC⁃2
455-467
在 Rap 介导的自噬中具有重要调控作用,增强自噬
[10] DAVIZON⁃CASTILLO P,MCMAHON B,AGUILA S,et
蛋白的表达,抑制血小板CD41的表达,影响细胞周
al. TNF⁃alpha⁃driven inflammation and mitochondrial dys⁃
期关键蛋白的表达。因此,本研究应用 CLEC⁃2 基
function define the platelet hyperreactivity of aging[J].
因敲除小鼠发现,CLEC⁃2可以通过其信号通路参与
Blood,2019,134(9):727-740
调节巨核细胞自噬过程,进而影响巨核细胞的成熟发 [11] HARBI M H,SMITH C W,NICOLSONP L R,et al. Novel
育。因此,研究CLEC⁃2是否可以通过激活其信号通 antiplatelet strategies targeting GPVI,CLEC⁃2 and tyro⁃
路参与调节巨核细胞自噬过程,有望成为探讨巨核细 sine kinases[J]. Platelets,2021,32(1):29-41
胞自噬机制的新的切入点,同时也为有效治疗伴随自 [12] SCHWEIG J E,YAO H,COPPOLA K,et al. Spleen tyro⁃
噬水平紊乱的血小板相关疾病提供新的靶点。 sine kinase(SYK)blocks autophagic Tau degradation in
vitro and in vivo[J]. J Biol Chem,2019,294(36):13378-
[参考文献]
13395
[1] HU Y X,HAN X S,JING Q. Autophagy in development [13] MARTYANOV A A,BALABIN F A,DUNSTER J L,et al.
and differentiation[J]. Adv Exp Med Biol,2019,1206: Control of platelet CLEC⁃2⁃mediated activation by recep⁃
469-487 tor clustering and tyrosine kinase signaling[J]. Biophys J,
[2] LIU S Y,ZHANG X M,SUN R J,et al. Abnormal expres⁃ 2020,118(11):2641-2655
sion of autophagy⁃related proteins in immune thrombocy⁃ [14] BASAK I,BHATLEKAR S,MANNE B K,et al. miR⁃15a⁃
topenia[J]. Scand J Immunol,2021,93(2):e12992 5p regulates expression of multiple proteins in the mega⁃
[3] GILANCHI S,ZALI H,FARANOUSH M,et al. Identifica⁃ karyocyte GPVI signaling pathway[J]. J Thromb Hae⁃
tion of candidate biomarkers for idiopathic thrombocytope⁃ most,2019,17(3):511-524
nic Purpura by bioinformatics analysis of microarray data [15] CAO Y,CAI J,ZHANG S,et al. Loss of autophagy leads to
[J]. Iran J Pharm Res,2020,19(4):275-289 failure in megakaryopoiesis,megakaryocyte differentia⁃
[4] WANG X,FU Y F,LIU X,et al. ROS promote ox⁃LDL⁃in⁃ tion,and thrombopoiesis in mice[J]. Exp Hematol,2015,
duced platelet activation by up ⁃ regulating autophagy 43(6):488-494
through the inhibition of the PI3K/AKT/mTOR pathway [收稿日期] 2021-05-12
[J]. Cell Physiol Biochem,2018,50(5):1779-1793 (本文编辑:陈汐敏)