潘丁氨酸改善了患者和细胞系模型中PPCS缺乏障碍中的扩张性心肌病特征
Fangfang Zhang1, Tatjana Dorn1, Barbara Gnutti2,3
1Regenerative Medicine in Cardiovascular Diseases, First Department of Medicine, TUM University Hospital, Klinikum Rechts der Isar, Technical University of Munich, School of Medicine and Health, Munich, Germany.
Communications medicine
|August 1, 2025
概括
罕见的心脏病PPCS缺乏症是由影响辅酶A (CoA) 生产的遗传变异引起的. 潘丁丁治疗在改善受影响患者的心脏功能和症状方面表现有前途.
科学领域:
- 遗传学和罕见疾病.
- 心血管医学 心血管医学
- 代谢障碍 代谢障碍 代谢障碍
背景情况:
- PPCS缺陷乱 (PPCS DD) 是一种极为罕见的,自体相衰退的扩张性心肌病 (DCM) 形式.
- 它源自PPCS基因的致病变异,这对辅酶A (CoA) 生物合成至关重要.
- 在全球范围内,以前只有6名患者被确诊.
研究的目的:
- 扩大对PPCSDD的遗传和临床谱的理解.
- 调查PPCS变异对细胞CoA水平和心脏功能的功能影响.
- 评估潘泰丁作为PPCSDD的治疗剂.
主要方法:
- 整体外基因组测序在6名DCM新患者中发现了致病性PPCS变异.
- 评估了蛋白质稳定性,量化了患者衍生细胞中的细胞CoA水平,并评估了心脏细胞功能.
- 在体外和长期临床后续研究中测试了潘丁丁的疗效.
主要成果:
- 确定了6名新的患有PPCSDD和多种表型的患者,包括神经肌肉和神经症状.
- PPCS变体降低了蛋白质稳定性和细胞CoA水平,导致心脏细胞收缩能力受损和心律失常.
- 潘丁丁在试验室中部分挽救了心脏细胞功能障碍,并证明了患者的持续临床改善.
结论:
- 这项研究扩大了PPCSDD的已知遗传和临床景观.
- 降低CoA水平和心脏功能障碍是关键的病理特征.
- 潘丁丁在PPCSDD中显示了DCM的治疗潜力,尽管早期干预对于完全逆转至关重要.
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