实用医学杂志 ›› 2025, Vol. 41 ›› Issue (11): 1618-1626.doi: 10.3969/j.issn.1006-5725.2025.11.003

• 基础研究 • 上一篇    

肿节风总黄酮影响骨髓间充质干细胞及其外泌体促进巨核细胞分化的作用及机制

刘慧珍1,卢晓南2,柳歌1,蔡关庆1,李平安1,曾英坚,尚广彬1()   

  1. 1.江西中医药大学1中医基础理论分化发展中心
    2.中医学院(江西南昌 330004),江西中医药大学附属医院;血液科 (江西 南昌 330006 )
  • 收稿日期:2025-03-12 出版日期:2025-06-10 发布日期:2025-06-19
  • 通讯作者: 尚广彬 E-mail:shanggb107@126.com
  • 基金资助:
    国家自然科学基金项目(82260798);江西省中医药管理局科技计划项目(2024B0451);江西中医药大学中西医结合一级学科(编号:江西省双一流学科zxyylxk20220103)

The effects and mechanism of total flavonoids of Sarcandra glabra in modulating bone marrow mesenchymal stem cells and their exosomes to promote megakaryocyte differentiation

Huizhen LIU1,Xiaonan LU2,Ge LIU1,Guanqing CAI1,Pingan LI1,Yingjian ZENG,Guangbin SHANG1()   

  1. *.Research Center for Differentiation and Development of Basic Theory of Traditional Chinese Medicine,Jiangxi University of Chinese Medicine,Nanchang 330004,Jiangxi,China
  • Received:2025-03-12 Online:2025-06-10 Published:2025-06-19
  • Contact: Guangbin SHANG E-mail:shanggb107@126.com

摘要:

目的 探索肿节风总黄酮(TFFSG)影响免疫性血小板减少症(ITP)状态骨髓间充质干细胞(BMSCs)及其外泌体(BMSCs-Exos)促进巨核细胞分化成熟的效应及机制。 方法 SD大鼠BMSCs为研究对象,分为空白对照组、ITP-BMSCs模型组、肿节风总黄酮低(1.95 μg/mL)、中(3.90 μg/mL)、高(7.80 μg/mL)剂量干预组。分别检测各组BMSCs细胞凋亡率及相关蛋白,B淋巴细胞瘤-2(Bcl-2)、B淋巴细胞瘤-2相关X蛋白(BAX)和胱天蛋白酶-3(Caspase-3)的表达情况。提取空白对照组外泌体(NC-BMSCs-Exos)、ITP-BMSCs模型组外泌体(APS-BMSCs-Exos),肿节风总黄酮中剂量组的外泌体(TFFSG-BMSCs-Exos),各组外泌体5 μg/mL与巨核系Dami细胞共培养96 h,流式细胞术检测各组细胞巨核系分化标志分子(CD41a、CD42b、CD61)表达和多倍体细胞(≥ 4 N)比例,Western Blot检测各组细胞p-MEK1/2、MEK1/2和p-ERK1/2、ERK1/2的表达。 结果 与ITP-BMSCs模型组相比,肿节风总黄酮低、中、高3个剂量组BMSCs凋亡率均显著下降(P < 0.01),肿节风总黄酮的中、高剂量组BAX和Caspase-3的表达显著下调,而Bcl-2的表达则显著上调(P < 0.05,P < 0.01)。与ITP-BMSCs-Exos组比较,TFFSG-BMSCs-Exos组的Dami细胞巨核系分化标志分子CD41a+、CD42b+、CD61+和多倍体细胞(≥ 4 N)比例显著增加(P < 0.05),p-MEK1/2/MEK1/2和p-ERK1/2/ERK1/2表达明显上调(P < 0.05)。 结论 肿节风总黄酮能抑制体外ITP状态BMSCs凋亡,同时可以通过BMSCs-Exos上调MEK1/2/ERK1/2信号通路促进巨核细胞分化和多倍体化成熟。

关键词: 免疫性血小板减少症, 骨髓间充质干细胞, 外泌体, 肿节风总黄酮

Abstract:

Objective To investigate the effects and underlying mechanisms of total flavonoids of sarcandra glabra (TFFSG) on bone marrow mesenchymal stem cells (BMSCs) and their derived exosomes in immune thrombocytopenia (ITP), with a focus on promoting megakaryocyte differentiation and maturation. Methods BMSCs induced by rabbit anti?rat platelet serum (APS) were divided into five groups: a blank control group, an ITP?BMSCs model group, and three TFFSG intervention groups with low (1.95 μg/mL), medium (3.90 μg/mL), and high doses (7.80 μg/mL). The apoptosis rates and the expression levels of apoptosis?related proteins?B?cell lymphoma 2 (Bcl?2), Bcl?2?associated X protein (BAX), and Cysteinyl aspartate?specific proteinase?3 (Caspase?3)?were assessed. Exosomes were isolated from the blank control group (NC?BMSCs?Exos), the ITP?BMSCs model group (ITP?BMSCs?Exos), and the medium?dose TFFSG group (TFFSG?BMSCs?Exos). Each group's exosomes (5 μg/mL) were co?cultured with megakaryocytic lineage Dami cells for 96 hours. Flow cytometry was employed to evaluate the expression of megakaryocytic differentiation markers (CD41a, CD42b, CD61) and the proportion of polyploid cells (≥ 4 N) in each group. Western Blot analysis was conducted to examine the expression of p?MEK1/2, MEK1/2, p?ERK1/2, and ERK1/2 across all groups. Results Compared with the ITP?BMSCs model group, the apoptosis rates in all TFFSG intervention groups were significantly reduced (P < 0.01). In the medium? and high?dose TFFSG groups, BAX and Caspase?3 expression levels were markedly downregulated, whereas Bcl?2 expression was upregulated (P < 0.05, P < 0.01). Compared with the ITP?BMSCs?Exos group, the TFFSG?BMSCs?Exos group demonstrated increased expression of CD41a+, CD42b+, and CD61+, a higher proportion of polyploid cells (≥ 4 N) (P < 0.05), as well as elevated ratios of p?MEK1/2 to MEK1/2 and p?ERK1/2 to ERK1/2(P < 0.05). Conclusion TFFSG inhibits apoptosis of ITP?state BMSCs in vitro and promotes megakaryocyte differentiation and polyploidization maturation through BMSC?derived exosomes by activating the MEK1/2?ERK1/2 signaling pathway.

Key words: immune thrombocytopenia, bone marrow mesenchymal stem cells, exosomes, total flavonoids of Sarcandra glabra

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