干扰正常水平的SIDT1抑制裸ASO效应。

IF 1.3 Q4 BIOCHEMISTRY & MOLECULAR BIOLOGY
Journal of Nucleic Acids Pub Date : 2021-11-16 eCollection Date: 2021-01-01 DOI:10.1155/2021/2458470
Masayuki Takahashi, Mineaki Seki, Masayuki Nashimoto, Tomohiro Kabuta
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引用次数: 3

摘要

虽然反义寡核苷酸(ASO)疗法可以被没有载体分子的活细胞吸收,但大部分被吸收的ASO被困在核内体中,不能发挥治疗作用。为了提高其治疗效果,阐明ASOs的细胞摄取和细胞内转运机制具有重要意义。在这项研究中,我们研究了SIDT1如何影响ASOs的细胞摄取和细胞内运输。荧光显微镜分析表明,大多数裸ASOs通过核内体转运到溶酶体。从流式细胞术和荧光显微镜获得的数据显示,尽管SIDT1水平几乎不影响ASOs的细胞摄取总量,但它似乎影响ASOs的细胞内运输。我们还发现SIDT1主要存在于内质网,干扰正常水平的SIDT1会抑制裸ASO靶向miR-16的反义作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Perturbing the Normal Level of SIDT1 Suppresses the Naked ASO Effect.

Perturbing the Normal Level of SIDT1 Suppresses the Naked ASO Effect.

Perturbing the Normal Level of SIDT1 Suppresses the Naked ASO Effect.

Perturbing the Normal Level of SIDT1 Suppresses the Naked ASO Effect.

Although antisense oligonucleotide (ASO) therapeutics can be taken up by living cells without carrier molecules, a large part of incorporated ASOs are trapped in the endosomes and do not exert therapeutic effects. To improve their therapeutic effects, it would be important to elucidate the mechanism of cellular uptake and intracellular trafficking of ASOs. In this study, we investigated how SIDT1 affects cellular uptake and intracellular trafficking of ASOs. Fluorescence microscopic analysis suggested that most of naked ASOs are trafficked to the lysosomes via the endosomes. The data obtained from flow cytometry and fluorescence microscopy together showed that although the SIDT1 level barely affects the total cellular uptake of ASOs, it appears to affect the intracellular trafficking of ASOs. We also showed that SIDT1 exists mainly in the endoplasmic reticulum and that perturbing the normal level of SIDT1 suppresses the antisense effect of the naked ASO targeting miR-16.

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来源期刊
Journal of Nucleic Acids
Journal of Nucleic Acids BIOCHEMISTRY & MOLECULAR BIOLOGY-
CiteScore
3.10
自引率
21.70%
发文量
5
审稿时长
12 weeks
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