α-Synuclein fibril-specific nanobody reduces prion-like α-synuclein spreading in mice.

α-Synuclein fibril-specific nanobody reduces prion-like α-synuclein spreading in mice.
复制标题

DOI:
10.1038/s41467-022-31787-2
复制
发表时间:
2022-07-19
影响因子:
16.6
通讯作者:
--
中科院分区:
综合性期刊1区
文献类型:
--
作者:

文献摘要

参考文献

被引文献

相似文献

致病性α-突触核蛋白(α-syn)是一种朊病毒样蛋白,其驱动路易体痴呆(LBD)和帕金森病(PD)的发病机制。为了靶向致病性α-syn预形成的原纤维(PFF),我们在酵母中设计了胞外无二硫键的合成纳米抗体文库。在选择之后,我们鉴定了一种纳米抗体PFFNB 2,其可以特异性识别α-syn PFF而不是α-syn单体。PFFNB 2不能抑制α-syn单体的聚集,但可以显着解离α-syn原纤维。此外,腺相关病毒(AAV)编码的EGFP与PFFNB 2融合蛋白(AAV-EGFP-PFFNB 2)可抑制PFF诱导的小鼠原代皮层神经元α-syn丝氨酸129磷酸化(pS129),并可通过纹状体内注射PFF防止α-syn病变向皮层扩散。pS129的免疫反应性与AAV-EGFP-PFFNB 2的表达呈负相关。总之,PFFNB 2有望在α-syn-related发病机制中进行机制探索和治疗开发。Butler等人选择了无二硫键的纳米抗体来靶向α-突触核蛋白原纤维。纳米抗体PFFNB 2显示在体外解聚α-突触核蛋白原纤维并抑制神经元培养物和小鼠模型中的α-突触核蛋白病理学发展。
Pathogenic α-synuclein (α-syn) is a prion-like protein that drives the pathogenesis of Lewy Body Dementia (LBD) and Parkinson’s Disease (PD). To target pathogenic α-syn preformed fibrils (PFF), here we designed extracellular disulfide bond-free synthetic nanobody libraries in yeast. Following selection, we identified a nanobody, PFFNB2, that can specifically recognize α-syn PFF over α-syn monomers. PFFNB2 cannot inhibit the aggregation of α-syn monomer, but can significantly dissociate α-syn fibrils. Furthermore, adeno-associated virus (AAV)-encoding EGFP fused to PFFNB2 (AAV-EGFP-PFFNB2) can inhibit PFF-induced α-syn serine 129 phosphorylation (pS129) in mouse primary cortical neurons, and prevent α-syn pathology spreading to the cortex in the transgenic mice expressing human wild type (WT) α-syn by intrastriatal-PFF injection. The pS129 immunoreactivity is negatively correlated with the expression of AAV-EGFP-PFFNB2. In conclusion, PFFNB2 holds a promise for mechanistic exploration and therapeutic development in α-syn-related pathogenesis. Butler et al. selected disulfide bond-free nanobodies to target α-synuclein fibrils. Nanobody PFFNB2 was shown to disaggregate α-synuclein fibrils in vitro and inhibit α-synuclein pathology development in neuron cultures and mouse models.
DOI: 10.3389/fimmu.2013.00217
发表时间: 2013
影响因子: 7.3
作者:
Frenzel A;Hust M;Schirrmann T
通讯作者: Schirrmann T
DOI: 10.3390/ijms22158338
发表时间: 2021-08-03
影响因子: 5.6
作者:
Jan A;Gonçalves NP;Vaegter CB;Jensen PH;Ferreira N
通讯作者: Ferreira N
DOI: 10.1110/ps.34602
发表时间: 2002-03-01
期刊: PROTEIN SCIENCE
影响因子: 8
作者:
Dumoulin, M;Conrath, K;Matagne, A
通讯作者: Matagne, A
DOI: 10.1016/j.nbd.2019.104712
发表时间: 2020-03-01
影响因子: 6.1
作者:
Henderson, Michael X.;Covell, Dustin J.;Luk, Kelvin C.
通讯作者: Luk, Kelvin C.
DOI: 10.1038/ncb748
发表时间: 2002-02-01
影响因子: 21.3
作者:
Fujiwara, H;Hasegawa, M;Iwatsubo, T
通讯作者: Iwatsubo, T