Wu Jianbo, Hunt Samuel D, Matthias Nadine, Servián-Morilla Emilia, Lo Jonathan, Jafar-Nejad Hamed, Paradas Carmen, Darabi Radbod
Center for Stem Cell and Regenerative Medicine (CSCRM), The Brown Foundation Institute of Molecular Medicine for the Prevention of Human Diseases (IMM), The University of Texas Health Science Center at Houston, Houston, TX 77030, USA.
Neuromuscular Disorders Unit, Department of Neurology, Instituto de Biomedicina de Sevilla, Hospital U. Virgen del Rocío/CSIC/Universidad de Sevilla, Sevilla 41013, Spain.
Stem Cell Res. 2017 Oct;24:102-105. doi: 10.1016/j.scr.2017.08.020. Epub 2017 Sep 1.
Recently, a new type of limb-girdle muscular dystrophy (LGMD type 2Z) has been identified due to a missense mutation in POGLUT1 (protein O-glucosyltransferase-Rumi), an enzyme capable of adding glucose to a distinct serine residue of epidermal growth factor-like repeats containing a C-X-S-X-(P/A)-C consensus sequence such as Notch receptors. Affected patients demonstrate reduced Notch signaling, decreased muscle stem cell pool and hypoglycosylation of α-dystroglycan, leading to LGMD phenotype. Here we report the generation and characterization of an iPSC line (CSCRMi001-A) from a LGMD-2Z patient with missense mutation in POGLUT1 which can be used for in vitro disease modeling.
最近,由于POGLUT1(蛋白质O-葡萄糖基转移酶-Rumi)中的错义突变,一种新型的肢带型肌营养不良症(2Z型LGMD)被发现。POGLUT1是一种能够将葡萄糖添加到含有C-X-S-X-(P/A)-C共有序列(如Notch受体)的表皮生长因子样重复序列的特定丝氨酸残基上的酶。受影响的患者表现出Notch信号传导减少、肌肉干细胞池减少以及α- dystroglycan的低糖基化,从而导致LGMD表型。在此,我们报告了来自一名POGLUT1存在错义突变的LGMD-2Z患者的诱导多能干细胞系(CSCRMi001-A)的产生和特性,该细胞系可用于体外疾病建模。