Journal article
Postnatal renal tubule development: roles of tubular flow and flux
Current opinion in nephrology and hypertension, Vol.33(5), pp.518-525
06/25/2024
DOI: 10.1097/MNH.0000000000001007
PMCID: PMC11290981
PMID: 38913022
Abstract
Postnatal renal tubule development is critical to adult kidney function. Several postnatal changes regulate the differentiation and proliferation of renal tubular cells. Here, we review the literature and our efforts on thick ascending limb (TAL) development in Bartter syndrome (BS).PURPOSE OF REVIEWPostnatal renal tubule development is critical to adult kidney function. Several postnatal changes regulate the differentiation and proliferation of renal tubular cells. Here, we review the literature and our efforts on thick ascending limb (TAL) development in Bartter syndrome (BS).Glomerular filtrate quickly increases after birth, imposing fluid shear stress and circumferential stretch on immature renal tubules. Recent studies showed that kidney organoids under flow (superfusion) have better development of tubular structures and the expression of cilia and solute transporters. These effects are likely mediated by mechanosensors, such as cilia and the piezo1 channel. Improved renal oxygenation and sodium pump-dependent active transport can stimulate mitochondrial respiration and biogenesis. The functional coupling between transport and mitochondria ensures ATP supply for energy-demanding reactions in tubular cells, including cell cycle progression and proliferation. We recently discovered that postnatal renal medulla maturation and TAL elongation are impaired in Clc-k2-deficient BS mice. Primary cultured Clc-k2-deficient TAL cells have G1-S transition and proliferation delay. These developmental defects could be part of the early pathogenesis of BS and worsen the phenotype.RECENT FINDINGSGlomerular filtrate quickly increases after birth, imposing fluid shear stress and circumferential stretch on immature renal tubules. Recent studies showed that kidney organoids under flow (superfusion) have better development of tubular structures and the expression of cilia and solute transporters. These effects are likely mediated by mechanosensors, such as cilia and the piezo1 channel. Improved renal oxygenation and sodium pump-dependent active transport can stimulate mitochondrial respiration and biogenesis. The functional coupling between transport and mitochondria ensures ATP supply for energy-demanding reactions in tubular cells, including cell cycle progression and proliferation. We recently discovered that postnatal renal medulla maturation and TAL elongation are impaired in Clc-k2-deficient BS mice. Primary cultured Clc-k2-deficient TAL cells have G1-S transition and proliferation delay. These developmental defects could be part of the early pathogenesis of BS and worsen the phenotype.Understanding how tubular flow and transepithelial ion fluxes regulate renal tubule development may improve the treatment of congenital renal tubulopathies.SUMMARYUnderstanding how tubular flow and transepithelial ion fluxes regulate renal tubule development may improve the treatment of congenital renal tubulopathies.
Details
- Title: Subtitle
- Postnatal renal tubule development: roles of tubular flow and flux
- Creators
- Yi-Jing G ChengChien-Chou ChenChih-Jen Cheng
- Resource Type
- Journal article
- Publication Details
- Current opinion in nephrology and hypertension, Vol.33(5), pp.518-525
- DOI
- 10.1097/MNH.0000000000001007
- PMID
- 38913022
- PMCID
- PMC11290981
- NLM abbreviation
- Curr Opin Nephrol Hypertens
- ISSN
- 1473-6543
- eISSN
- 1473-6543
- Publisher
- LIPPINCOTT WILLIAMS & WILKINS
- Grant note
- National Institutes of Health, U.S.A: DK134420
The author was supported by grants from the National Institutes of Health, U.S.A. (DK134420 to C.J.C.).
- Language
- English
- Electronic publication date
- 06/25/2024
- Academic Unit
- Nephrology; Internal Medicine
- Record Identifier
- 9984648576002771
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