759-逻辑门控三特异性巨噬细胞实体瘤衔接器 episode artwork

EPISODE · Apr 7, 2026 · 28 MIN

759-逻辑门控三特异性巨噬细胞实体瘤衔接器

from 聊聊Sci

这篇研究介绍了一种新型的逻辑门控三特异性巨噬细胞接合器(TrME),旨在提升实体瘤的免疫治疗效果。研究者利用计算建模从252种变体中筛选出最佳的嵌合接头,成功实现了在单个巨噬细胞上的顺式靶向,同时激活促吞噬受体LRP1并阻断抗吞噬受体SIRPα。这种“激活且阻断”的布尔逻辑门设计,配合肿瘤抗原靶向臂,能够精准引导巨噬细胞高效吞噬并清除癌细胞。此外,通过脂质纳米颗粒(LNP)递送编码该接合器的mRNA,在多种实体瘤小鼠模型中显著抑制了肿瘤生长。该方案不仅重塑了肿瘤相关巨噬细胞的抗肿瘤表型,还成功激活了后续的自适应T细胞免疫响应,为新一代多特异性免疫细胞接合器的开发提供了关键范例。References: Zhao X, Jing W, Wang G, et al. A logic-gated trispecific engager enhances macrophage killing of cancer cells in solid tumors[J]. Nature Biotechnology, 2026: 1-16.前往小宇宙评论区与主播互动

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759-逻辑门控三特异性巨噬细胞实体瘤衔接器

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