抗自身免疫性腦脊髓炎的非炎性mRNA疫苗研製
作者:
小柯機器人發布時間:2021/1/8 16:38:37
德國約翰內斯·古騰堡大學醫學院醫學中心Ugur Sahin研究團隊取得最新進展。他們研製了一種用於治療實驗性自身免疫性腦脊髓炎的非炎性mRNA疫苗。2021年1月8日出版的《科學》雜誌發表了這項成果。
他們顯示了系統地遞送的納米粒子配方的1甲基偽氨吡啶修飾的信使RNA(m1Ψ mRNA)編碼與疾病相關的自身抗原,導致在沒有共刺激信號的情況下在脾CD11c +抗原呈遞細胞上呈遞抗原。在多發性硬化的幾種小鼠模型中,通過用這種m1Ψ mRNA治療可以抑制疾病。治療效果與效應T細胞的減少和調節性T細胞(Treg細胞)群體發育有關。明顯地,這些Treg細胞執行強烈旁觀免疫抑制,因此改善了由同源和非同源自身抗原誘導的疾病。
研究人員表示,控制自身反應性T細胞而不誘導全身性免疫抑制的能力是治療自身免疫性疾病的主要目標。關鍵的挑戰是在非炎性環境中安全有效地遞送藥學上明確定義的抗原。
附:英文原文
Title: A noninflammatory mRNA vaccine for treatment of experimental autoimmune encephalomyelitis
Author: Christina Krienke, Laura Kolb, Elif Diken, Michael Streuber, Sarah Kirchhoff, Thomas Bukur, zlem Akilli-ztürk, Lena M. Kranz, Hendrik Berger, Jutta Petschenka, Mustafa Diken, Sebastian Kreiter, Nir Yogev, Ari Waisman, Katalin Karikó, zlem Türeci, Ugur Sahin
Issue&Volume: 2021/01/08
Abstract: The ability to control autoreactive T cells without inducing systemic immune suppression is the major goal for treatment of autoimmune diseases. The key challenge is the safe and efficient delivery of pharmaceutically well-defined antigens in a noninflammatory context. Here, we show that systemic delivery of nanoparticle-formulated 1 methylpseudouridine-modified messenger RNA (m1Ψ mRNA) coding for disease-related autoantigens results in antigen presentation on splenic CD11c+ antigen-presenting cells in the absence of costimulatory signals. In several mouse models of multiple sclerosis, the disease is suppressed by treatment with such m1Ψ mRNA. The treatment effect is associated with a reduction of effector T cells and the development of regulatory T cell (Treg cell) populations. Notably, these Treg cells execute strong bystander immunosuppression and thus improve disease induced by cognate and noncognate autoantigens.
DOI: 10.1126/science.aay3638
Source: https://science.sciencemag.org/content/371/6525/145
Science:《科學》,創刊於1880年。隸屬於美國科學促進會,最新IF:41.037