Impaired Glucose Metabolism, Primary Cilium Defects, and Kidney Cystogenesis in Glycogen Storage Disease Type Ia.

IF 10.3 1区 医学 Q1 UROLOGY & NEPHROLOGY
Laure Monteillet, Gwendoline Perrot, Félicie Evrard, Alexane Miliano, Marine Silva, Alicia Leblond, Clément Nguyen, Fabiola Terzi, Gilles Mithieux, Fabienne Rajas
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引用次数: 0
糖原贮积症 Ia 型的葡萄糖代谢障碍、原发性纤毛缺陷和肾囊肿形成
背景:糖原贮积症 Ia 型(GSDIa)是一种罕见的代谢性疾病,由葡萄糖-6 磷酸酶(G6PC1)催化亚基突变引起。这种疾病会导致严重的低血糖症,大多数年轻的 GSDIa 患者会发展成慢性肾脏病。肾脏病理学的特点是出现囊肿,通常发生在 CKD 的晚期:为了阐明囊肿形成的分子机制,我们利用从子宫内阶段就特异性删除肾脏中 G6pc1 的小鼠,研究了肾脏代谢、参与细胞增殖的分子通路以及原纤毛完整性:结果:GSDIa小鼠表现出肾脏纤维化、高炎症性和囊肿形成,导致肾脏功能障碍。此外,G6PC1 的缺失还导致肾脏中糖原和脂质的异位积累,并使代谢转向沃伯格式代谢。这种新陈代谢适应是由于过量的葡萄糖-6 磷酸所致,而葡萄糖-6 磷酸支持由 MEK/ERK 和 AKT/mTOR 通路驱动的细胞增殖。用雷帕霉素(mTOR 通路的靶标)治疗 GSDIa 小鼠可减少细胞增殖和肾脏损伤。我们的研究结果还发现,脂钙蛋白 2 是 GSDIa 小鼠肾脏炎症的促成因素,也是 CKD 进展的早期生物标志物。使其失活可部分防止 GSDIa 小鼠的肾脏病变。重要的是,在GSDIa小鼠的肾脏中观察到了原发性纤毛缺陷:结论:GSDIa 肾小管中葡萄糖-6 磷酸盐积累导致的新陈代谢适应性转变为类似沃伯格的新陈代谢,似乎促进了细胞增殖和囊肿形成,其方式与在各种囊性肾脏疾病中观察到的类似。这与初级纤毛基因表达下调有关,从而导致纤毛形态改变。
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来源期刊
Journal of The American Society of Nephrology
Journal of The American Society of Nephrology 医学-泌尿学与肾脏学
CiteScore
22.40
自引率
2.90%
发文量
492
审稿时长
3-8 weeks
期刊介绍: The Journal of the American Society of Nephrology (JASN) stands as the preeminent kidney journal globally, offering an exceptional synthesis of cutting-edge basic research, clinical epidemiology, meta-analysis, and relevant editorial content. Representing a comprehensive resource, JASN encompasses clinical research, editorials distilling key findings, perspectives, and timely reviews. Editorials are skillfully crafted to elucidate the essential insights of the parent article, while JASN actively encourages the submission of Letters to the Editor discussing recently published articles. The reviews featured in JASN are consistently erudite and comprehensive, providing thorough coverage of respective fields. Since its inception in July 1990, JASN has been a monthly publication. JASN publishes original research reports and editorial content across a spectrum of basic and clinical science relevant to the broad discipline of nephrology. Topics covered include renal cell biology, developmental biology of the kidney, genetics of kidney disease, cell and transport physiology, hemodynamics and vascular regulation, mechanisms of blood pressure regulation, renal immunology, kidney pathology, pathophysiology of kidney diseases, nephrolithiasis, clinical nephrology (including dialysis and transplantation), and hypertension. Furthermore, articles addressing healthcare policy and care delivery issues relevant to nephrology are warmly welcomed.
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