纳米颗粒帮助脾脏支持胰岛移植

IF 40 1区 医学 Q1 ENDOCRINOLOGY & METABOLISM
Senegal Carty
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引用次数: 0

摘要

胰岛移植可以替代被自身免疫反应靶向的β细胞,从而提高1型糖尿病(T1DM)患者的胰岛素水平。然而,确保移植的胰岛成功移植是一个挑战。发表在《科学转化医学》杂志上的一篇新论文描述了一种改善移植后胰岛功能的方法,该方法涉及在胰岛移植之前将覆盖有魔芋葡甘露聚糖的二氧化硅纳米颗粒注射到脾脏中。暴露于这些纳米颗粒会增加脾脏中的细胞外基质(ECM)沉积,这有助于取代在分离供体胰岛过程中被移除的ECM。纳米颗粒也抑制宿主对移植胰岛的免疫反应。Liu, Wang, Huang, Dong和Xiao说:“尽管有这些特点,将胰岛移植到脾脏仍然很困难,部分原因是该器官中的ECM水平相当低。”研究人员推测,魔芋葡甘露聚糖包覆的二氧化硅纳米颗粒可能导致细胞变化,从而增加小鼠脾脏中的ECM沉积。在使用纳米颗粒来验证这一假设之前,他们对每只小鼠进行了手术,将脾脏移至腹膜外。这种手术使后续实验所需的多次脾内注射变得更加容易。接下来,科学家们将悬浮在磷酸盐缓冲盐水(PBS)中的纳米颗粒注射到一组小鼠的脾脏中。另一组小鼠单独给予脾注射PBS作为对照。研究小组使用马松三色染色、免疫荧光显微镜和酶联免疫吸附法(elisa)对脾脏组织切片进行分析,以评估纳米颗粒处理是否增加了ECM的数量。所有这些方法都表明,注射纳米颗粒的脾脏中胶原蛋白的含量明显高于单独注射PBS的脾脏。ELISA结果还显示,ECM的另一种成分羟脯氨酸水平升高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Nanoparticles help the spleen support pancreatic islet transplants

Nanoparticles help the spleen support pancreatic islet transplants
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来源期刊
Nature Reviews Endocrinology
Nature Reviews Endocrinology 医学-内分泌学与代谢
CiteScore
42.00
自引率
0.70%
发文量
158
审稿时长
6-12 weeks
期刊介绍: Nature Reviews Endocrinology aspires to be the foremost platform for reviews and commentaries catering to the scientific communities it serves. The journal aims to publish articles characterized by authority, accessibility, and clarity, enhanced with easily understandable figures, tables, and other visual aids. The goal is to offer an unparalleled service to authors, referees, and readers, striving to maximize the usefulness and impact of each article. Nature Reviews Endocrinology publishes Research Highlights, Comments, News & Views, Reviews, Consensus Statements, and Perspectives relevant to researchers and clinicians in the fields of endocrinology and metabolism. Its broad scope ensures that the work it publishes reaches the widest possible audience.
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