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第42卷第6期
               ·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-
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                   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)
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