数据日期 2026-10-29 · 生成时间 2026-10-29 06:03
研究问题
Post-translational modification generates distinct protein proteoforms with different—and sometimes opposing—biological activities.
方法
For experiments, cells were plated on poly-l-lysine coated (200 μg/mL: Sigma) glass coverslips (12 mm or 30 mm) or tissue culture dishes at a density of 200,000–250,000 cells/ml and allowed to grow overnight before use.；For typical experiments, 25–100 μg DOPC+ are aliquoted into a clean glass tube, an amount that gives sufficient material for cells in a 35 mm culture.；(While up to 100 μg DOPC+ /ml culture medium was tolerated by rat hippocampal neurons, chick retinal neurons, and the B103 CNS nerve cell line, it was found that 50 μg DOPC+ in 1 mL culture medium typically was effective at antibody deliver.) Cultures are washed to remove serum before adding antibody-lipid complexes; adaptation to serum-free conditions may be appropriate for some cell types.；CLD samples were incubated with a FITC-conjugated anti-mouse or anti-rabbit IgG (1:250, Jackson Immunoresearch Labs, West Grove, PA), or with a biotinylated anti-mouse or anti-rabbit IgG (1:250, Jackson Immunoresearch Labs) followed by a streptavidin-DTAF/Texas Red conjugate (1:250, Jackson Immunoresearch Labs).
核心结论
(D) Analysis of the percentage of the population that was labeled showed that CLD delivered antibody into approximately 65% of the population that was labeled using traditional immunolabeling methods (n = 9+, the number of fields captured per condition across 4 independent experiments). ‖ 结论：These findings establish CLD as a practical approach for acute intracellular antibody delivery and provide a means for probing endogenous proteoforms in their native cellular environment.
局限
The mechanism underlying this response remains to be established.；Future studies examining cytoskeletal organization, microtubule stability, and tau-binding partners following PHF-1 delivery may help elucidate the underlying mechanism.；There are limitations that should be considered.
对本项目的价值
★★☆☆☆ 脑老化是最大未满足需求，也是终点最难量化的领域；biomarker 与认知读数选择最敏感。最大样本量约 9。
全文来源
OpenAlex 定位 OA PDF（正文 39,764 字符，已过标题/DOI 逐字归属校验）
原文题录
- 英文标题：Safe and efficient intracellular delivery of functional antibodies into cultured neural cells shows a role for Alzheimer's-relevant tau phosphorylation in cell integrity.
- 期刊与标识：Front Dement · PMID 42947687 · DOI 10.3389/frdem.2026.1737082**
B 级证据分级：B 级（同行评议临床前研究，主要为动物模型）
本文核心结论来自动物模型或体外细胞学，属临床前证据，不能外推至人体。「延长健康寿命」「改善功能」等表述在小鼠中的意义，与人类临床结局之间仍有距离。
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