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Related Concept Videos

Renal Corpuscle01:20

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The glomerulus and Bowman's capsule are two essential components of the nephron, which is the functional unit of the kidney. These microscopic structures play a critical role in the process of blood filtration to produce urine.
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The filtration membrane in the renal system is a highly specialized structure essential for filtering blood. It consists of glomerular capillaries and podocytes, forming a selective barrier that permits the passage of water and small solutes while restricting most plasma proteins and blood cells.
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The Glomerular Filtration Rate (GFR) is a measure of kidney function, reflecting the volume of filtrate formed per minute in the kidneys. On average, GFR is approximately 125 mL/min in males and 105 mL/min in females. Maintaining a relatively constant GFR is essential for the kidneys to effectively regulate body fluid homeostasis and maintain extracellular stability.
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Updated: Oct 5, 2025

Isogenic Kidney Glomerulus Chip Engineered from Human Induced Pluripotent Stem Cells
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Biomimetic models of the glomerulus.

Marta G Valverde1,2, Luis S Mille1, Kianti P Figler1

  • 1Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, USA.

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Biomimetic models of the glomerulus are crucial for understanding kidney diseases and developing new therapies. Current models lack complexity, but 3D bioprinting offers a promising future for advanced glomerular research.

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Area of Science:

  • Nephrology
  • Biomaterials Science
  • Biofabrication

Background:

  • Biomimetic models of the glomerulus are vital for advancing kidney disease research and therapeutics.
  • Current in vitro models (organ-on-a-chip, scaffold-based, organoids) have limitations in replicating glomerular structure and function.

Purpose of the Study:

  • To review the limitations of current in vitro glomerular models.
  • To explore the potential of advanced biofabrication techniques, particularly 3D bioprinting, for creating more accurate glomerular models.

Main Methods:

  • Review and analysis of existing literature on in vitro glomerular models.
  • Discussion of the capabilities and potential of 3D bioprinting for glomerular research.

Main Results:

  • Existing models fail to fully capture the complexity of the glomerular filtration barrier and dynamic fluidic responses.
  • 3D bioprinting offers a pathway to fabricate constructs that recapitulate the intricate glomerular structure and filtration barrier.

Conclusions:

  • The development of optimal in vitro glomerular models is ongoing, with biofabrication advancements being key.
  • Future models should incorporate high-content screening capabilities and inter-organ coupling for comprehensive drug response prediction.