Renal primary cilia lengthen in the progression of diabetic kidney disease

Author:

Bai Yunfeng,Li Ping,Liu Jiaona,Zhang Lu,Cui Shaoyuan,Wei Cuiting,Fu Bo,Sun Xuefeng,Cai Guangyan,Hong Quan,Chen Xiangmei

Abstract

Diabetic kidney disease (DKD) is the leading cause of end-stage renal disease, and its early pathogenesis is critical. Shear stress caused by glomerular hyperfiltration contributes to the initiation of kidney injury in diabetes. The primary cilium of renal tubular epithelial cells (RTECs) is an important mechanical force sensor of shear stress and regulates energy metabolism homeostasis in RTECs to ensure energy supply for reabsorption functions, but little is known about the alterations in the renal cilium number and length during the progression of DKD. Here, we demonstrate that aberrant ciliogenesis and dramatic increase in the cilium length, the number of ciliated cells, and the length of cilia are positively correlated with the DKD class in the kidney biopsies of DKD patients by super-resolution imaging and appropriate statical analysis methods. This finding was further confirmed in STZ-induced or db/db diabetic mice. These results suggest that the number and length of renal cilia may be clinically relevant indicators and that cilia will be attractive therapeutic targets for DKD.

Funder

National Natural Science Foundation of China

Natural Science Foundation of Fujian Province

Publisher

Frontiers Media SA

Subject

Endocrinology, Diabetes and Metabolism

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