Related Experiment Video

Updated: Apr 25, 2026

Implementing Patch Clamp and Live Fluorescence Microscopy to Monitor Functional Properties of Freshly Isolated PKD Epithelium
08:46

Implementing Patch Clamp and Live Fluorescence Microscopy to Monitor Functional Properties of Freshly Isolated PKD Epithelium

Published on: September 1, 2015

9.2K

Restoring multidrug resistance-associated protein 3 attenuates cell proliferation in the polycystic kidney

EunSun Chang1, Eun Young Park1, Yu mi Woo1

  • 1Department of Biological Science, Sookmyung Women's University, Seoul, Republic of Korea;

American Journal of Physiology. Renal Physiology
|August 22, 2014
PubMed

Insights

Multidrug-resistance-associated protein 3 (MRP3) is downregulated in polycystic kidney disease (PKD). Restoring MRP3 function may offer a new therapeutic strategy for PKD by reducing renal cell proliferation.

Area of Science:

  • Nephrology
  • Molecular Biology
  • Cell Biology

Background:

  • Autosomal dominant polycystic kidney disease (ADPKD) involves abnormal renal tubular epithelial cell proliferation, leading to kidney dysfunction.
  • Current therapeutic options for ADPKD are limited, necessitating the identification of novel drug targets.
  • The specific role of multidrug-resistance-associated protein 3 (MRP3) in renal function remains largely uncharacterized.

Purpose of the Study:

  • To investigate the role of MRP3 in the pathogenesis of polycystic kidney disease (PKD).
  • To explore the potential of MRP3 as a therapeutic target for PKD.

Main Methods:

  • Quantitative analysis of MRP3 expression in human ADPKD kidneys and a mouse model of polycystic kidney disease (PKD).
  • In vitro studies to assess the effect of MRP3 modulation on renal epithelial cell proliferation and cystogenesis.
  • Investigation of the signaling pathways involved in MRP3-mediated regulation of cell proliferation.

Main Results:

  • MRP3 expression was significantly downregulated in the kidneys of ADPKD patients and PKD mouse models.
  • Downregulation of MRP3 was found to stimulate renal epithelial cell proliferation via the B-Raf/MEK/ERK signaling pathway.
  • Restoration of MRP3 expression inhibited cell proliferation and cyst formation in vitro.

Conclusions:

  • MRP3 plays a critical role in regulating renal cell proliferation and cystogenesis.
  • Downregulated MRP3 contributes to the development of PKD.
  • Therapeutic strategies aimed at restoring MRP3 function may be effective for treating PKD.
Keywords:
cell proliferationcystogenesismultidrug resistance-associated protein 3 (MRP3)polycystic kidney

More Related Videos

Use of Ultra-high Field MRI in Small Rodent Models of Polycystic Kidney Disease for In Vivo Phenotyping and Drug Monitoring07:35

Use of Ultra-high Field MRI in Small Rodent Models of Polycystic Kidney Disease for In Vivo Phenotyping and Drug Monitoring

Published on: June 23, 2015

10.9K
Assessment of Mitochondrial Functions and Cell Viability in Renal Cells Overexpressing Protein Kinase C Isozymes15:43

Assessment of Mitochondrial Functions and Cell Viability in Renal Cells Overexpressing Protein Kinase C Isozymes

Published on: January 7, 2013

17.7K

Related Concept Videos

Abnormal Proliferation02:23

Abnormal Proliferation

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
4.0K
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
3.6K
PI3K/mTOR/AKT Signaling Pathway01:22

PI3K/mTOR/AKT Signaling Pathway

The mammalian target of rapamycin  (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1  (mTORC1) and mTOR complex 2  (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast,  mTORC2 consists of a...
5.1K
Chronic Kidney Disease III: Interprofessional Care01:28

Chronic Kidney Disease III: Interprofessional Care

Chronic kidney disease (CKD) requires collaborative and comprehensive management. CKD progresses through stages and can lead to end-stage kidney disease (ESKD) if untreated. Interprofessional collaboration and patient education are crucial, enabling patients to manage their health and improve their quality of life.Diagnostic approach for chronic kidney diseaseThe diagnosis of CKD primarily focuses on the glomerular filtration rate (GFR), which assesses kidney function by measuring how well...
676