Joint Centre of Translational Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China.
Joint Centre of Translational Medicine, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325000, China.
Adv Sci (Weinh). 2024 Jul;11(28):e2404198. doi: 10.1002/advs.202404198. Epub 2024 May 29.
Rheumatoid arthritis (RA) is an autoimmune disorder characterized by chronic inflammation of the synovial joints and the dysfunction of regulatory T cells (Tregs) in the peripheral blood. Therefore, an optimal treatment strategy should aim to eliminate the inflammatory response in the joints and simultaneously restore the immune tolerance of Tregs in peripheral blood. Accordingly, we developed an efferocytosis-mimicking nanovesicle that contains three functional factors for immunomodulating of efferocytosis, including "find me" and "eat me" signals for professional (macrophage) or non-professional phagocytes (T lymphocyte), and "apoptotic metabolite" for metabolite digestion. We showed that efferocytosis-mimicking nanovesicles targeted the inflamed joints and spleen of mice with collagen-induced arthritis, further recruiting and selectively binding to macrophages and T lymphocytes to induce M2 macrophage polarization and Treg differentiation and T helper cell 17 (Th17) recession. Under systemic administration, the efferocytosis-mimicking nanovesicles effectively maintained the pro-inflammatory M1/anti-inflammatory M2 macrophage balance in joints and the Treg/Th17 imbalance in peripheral blood to prevent RA progression. This study demonstrates the potential of efferocytosis-mimicking nanovesicles for RA immunotherapy.
类风湿关节炎(RA)是一种自身免疫性疾病,其特征是滑膜关节的慢性炎症和外周血中调节性 T 细胞(Tregs)的功能障碍。因此,最佳的治疗策略应旨在消除关节中的炎症反应,同时恢复外周血中 Tregs 的免疫耐受。因此,我们开发了一种模仿吞噬作用的纳米囊泡,该囊泡包含三个用于调节吞噬作用的免疫调节功能因子,包括用于专业(巨噬细胞)或非专业吞噬细胞(T 淋巴细胞)的“找我”和“吃我”信号,以及用于代谢物消化的“凋亡代谢物”。我们表明,模仿吞噬作用的纳米囊泡靶向胶原诱导关节炎小鼠的发炎关节和脾脏,进一步招募并选择性结合巨噬细胞和 T 淋巴细胞,诱导 M2 巨噬细胞极化和 Treg 分化以及 Th17 衰退。在系统给药下,模仿吞噬作用的纳米囊泡有效地维持了关节中促炎 M1/抗炎 M2 巨噬细胞平衡以及外周血中 Treg/Th17 失衡,从而预防 RA 进展。本研究证明了模仿吞噬作用的纳米囊泡在 RA 免疫治疗中的潜力。
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