反義寡核苷酸可用於治療小鼠CLN3巴頓病
作者:
小柯機器人發布時間:2020/7/28 15:47:35
美國羅莎琳德富蘭克林醫科大學Michelle L. Hastings團隊,研究了反義寡核苷酸在CLN3巴頓病小鼠模型中的治療效果。這一研究成果發表在2020年7月27日出版的《自然-醫學》上。
研究人員表明具有CLN3的7和8外顯子缺失(CLN3Δex7/ 8)的小鼠可使用反義寡核苷酸(ASO)進行有效治療,該反義寡核苷酸可誘導外顯子跳躍以恢復開放閱讀框。單次靶向外顯子5的ASO治療可誘導顯著的外顯子跳躍並能維持超過一年,其改善了小鼠運動協調性、降低了Cln3Δex7/ 8小鼠的組織病理學,並增加了該疾病模型小鼠的存活率。ASOs還誘導來自CLN3 巴頓病患者細胞系中的外顯子跳躍。
該發現表明,基於ASO的閱讀框校正可作為一種治療CLN3巴頓病的方法,並可使用類似的策略拓寬ASO在治療其他疾病中的應用前景。
據了解,CLN3 巴頓病是一種由CLN3突變引起的常染色體隱性遺傳、神經退行性、溶酶體貯存病,CLN3編碼溶酶體膜蛋白。目前尚無針對這種疾病的治療方法,該疾病在25,000名新生兒中就有1例。巴頓病在兒童早期就出現症狀,通常在20-30歲時致命。大多數患有CLN3 巴頓病的患者均缺失CLN3Δex7/ 8,從而產生易碼突變。
附:英文原文
Title: Therapeutic efficacy of antisense oligonucleotides in mouse models of CLN3 Batten disease
Author: Jessica L. Centa, Francine M. Jodelka, Anthony J. Hinrich, Tyler B. Johnson, Joseph Ochaba, Michaela Jackson, Dominik M. Duelli, Jill M. Weimer, Frank Rigo, Michelle L. Hastings
Issue&Volume: 2020-07-27
Abstract: CLN3 Batten disease is an autosomal recessive, neurodegenerative, lysosomal storage disease caused by mutations in CLN3, which encodes a lysosomal membrane protein1,2,3. There are no disease-modifying treatments for this disease that affects up to 1 in 25,000 births, has an onset of symptoms in early childhood and typically is fatal by 20–30 years of life4,5,6,7. Most patients with CLN3 Batten have a deletion encompassing exons 7 and 8 (CLN3ex7/8), creating a reading frameshift7,8. Here we demonstrate that mice with this deletion can be effectively treated using an antisense oligonucleotide (ASO) that induces exon skipping to restore the open reading frame. A single treatment of neonatal mice with an exon 5-targeted ASO-induced robust exon skipping for more than a year, improved motor coordination, reduced histopathology in Cln3ex7/8 mice and increased survival in a new mouse model of the disease. ASOs also induced exon skipping in cell lines derived from patients with CLN3 Batten disease. Our findings demonstrate the utility of ASO-based reading-frame correction as an approach to treat CLN3 Batten disease and broaden the therapeutic landscape for ASOs in the treatment of other diseases using a similar strategy.
DOI: 10.1038/s41591-020-0986-1
Source: https://www.nature.com/articles/s41591-020-0986-1