Journal
THERANOSTICS
Volume 7, Issue 10, Pages 2704-2717Publisher
IVYSPRING INT PUBL
DOI: 10.7150/thno.19679
Keywords
Type 1 Diabetes; Lysosome; Protein network; Gut microbiome; Urinary proteome
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Funding
- National Institute of Diabetes and Digestive and Kidney [1DP3DK094343-01]
- Ruggles Family Foundation
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While insulin replacement therapy restores the health and prevents the onset of diabetic complications (DC) for many decades, some T1D patients have elevated hemoglobin A1c values suggesting poor glycemic control, a risk factor of DC. We surveyed the stool microbiome and urinary proteome of a cohort of 220 adolescents and children, half of which had lived with T1D for an average of 7 years and half of which were healthy siblings. Phylogenetic analysis of the 16S rRNA gene did not reveal significant differences in gut microbial alpha-diversity comparing the two cohorts. The urinary proteome of T1D patients revealed increased abundances of several lysosomal proteins that correlated with elevated HbA1c values. In silico protein network analysis linked such proteins to extracellular matrix components and the glycoprotein LRG1. LRG1 is a prominent inflammation and neovascularization biomarker. We hypothesize that these changes implicate aberrant glycation of macromolecules that alter lysosomal function and metabolism in renal tubular epithelial cells, cells that line part of the upper urinary tract.
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