Isogenic Kidney Glomerulus Chip Engineered from Human Induced Pluripotent Stem Cells.

Area of Science:

• Biomedical Engineering
• Regenerative Medicine
• Nephrology

Background:

• Chronic kidney disease (CKD) affects 15% of US adults, with limited targeted therapies due to inadequate predictive models.
• Existing in vitro kidney models lack patient specificity and functional characteristics for accurate disease modeling and drug testing.
• The human kidney glomerulus is crucial for filtration and a common site for disease and drug toxicity.

Purpose of the Study:

• To engineer a vascularized, isogenic microfluidic kidney glomerulus chip using patient-derived induced pluripotent stem cells (iPSCs).
• To create a functional in vitro model that accurately recapitulates the human glomerular filtration barrier and drug-induced nephrotoxicity.
• To advance kidney precision medicine by enabling patient-specific disease modeling and therapeutic discovery.

Main Methods:

• Integration of human iPSC-derived podocytes and vascular endothelium from a single patient.
• Engineering a vascularized microfluidic chip to create an isogenic kidney glomerulus model.
• Characterization of cell-specific markers, basement membrane production, and filtration barrier formation.

Main Results:

• The engineered glomerulus chip demonstrated functional characteristics of the human glomerular filtration barrier.
• The chip successfully recapitulated drug-induced kidney injury, showing selective molecule filtration.
• The model utilizes isogenic cell types, enabling patient-specific disease modeling.

Conclusions:

• The developed kidney glomerulus chip offers a patient-specific, functional in vitro model for studying kidney diseases.
• This organ-on-a-chip technology advances kidney precision medicine and nephrotoxicity assessment.
• The model provides a platform for personalized therapeutic discovery and drug development.