ArticleMolecular biology of the cell2023
Megalin, cubilin, and Dab2 drive endocytic flux in kidney proximal tubule cells.
Article in Molecular biology of the cell, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
25 citing papers in PubMed, 27 citations in OpenAlex.
- Megalin: from structure to function.Nature reviews. Nephrology · 2026Review
- Article
- Proximity Labeling Reveals How Lrp2 Interacts with the Endocytic Machine.Journal of proteome research · 2026Article
- Endocytic Adaptor Proteins in Vascular Diseases: Critical Role of Intracellular Trafficking in Regulating Pathobiology of Vascular Disorders.Cardiology discovery · 2026Review
- Differential urinary IgG fragmentation in diabetes and IgA nephropathy.Clinical and experimental nephrology · 2026Article
- Therapeutic rewiring of ceRNA networks: a computational pipeline for drug repurposing in acute kidney injury via circRNA-miRNA-mRNA axis disruption.Human genomics · 2026Review
- Untargeted Urinary Proteomics Uncovers Nephroprotective and Systemic Adaptations after Obesity Surgery-Induced Weight Loss.Journal of proteome research · 2026Article
- Protein phosphatase 2A subunit B55 alpha is required for angiotensin type 2 receptor elicited natriuresis.American journal of physiology. Renal physiology · 2026Article
- Endocytotic Albumin Uptake Pathways in Human Adipose Stem Cells and Connection to Intracellular Calcium Oscillations and the Neonatal Fc receptor.Cells, tissues, organs · 2026Article
- From intracellular processing to renal phenotypes: a mechanism-informed framework for interpreting kidney injury and electrolyte patterns with antibody-drug conjugates in solid tumors.Frontiers in pharmacology · 2026Review
- Cardiac LIM Protein, Kidney Fibrosis, and Vascular Change after Acute Cardiorenal Syndrome.Journal of the American Society of Nephrology : JASN · 2025Article
- Fatty acids and albumin are transported by distinct mechanisms in the proximal tubule.American journal of physiology. Renal physiology · 2025Article
- Review
- Injured Proximal Tubular Epithelial Cells Lose Hepatocyte Nuclear Factor 4α Expression Crucial for Brush Border Formation and Transport.The American journal of pathology · 2025Article
- Renal nerves and hypertension contribute to impaired proximal tubule megalin-mediated albumin uptake in renovascular hypertensive rats.Hypertension research : official journal of the Japanese Society of Hypertension · 2025Article
- Human parietal epithelial cells as Trojan horses in albumin overload.Scientific reports · 2025Article
- Spns1 is an iron transporter essential for megalin-dependent endocytosis.American journal of physiology. Renal physiology · 2024Article
- Megalin as a Metabolic Modulator in the Kidney and Beyond.Function (Oxford, England) · 2024Article
- Megalin Knockout Reduces SGLT2 Expression and Sensitizes to Western Diet-induced Kidney Injury.Function (Oxford, England) · 2024Article
- Renal handling of albumin in rats with early stage diabetes: A theoretical analysis.The Journal of physiology · 2024Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 2 institutions in 2 countries.
Funding
Abstract
The kidney proximal tubule (PT) elaborates a uniquely high-capacity apical endocytic pathway to retrieve albumin and other proteins that escape the glomerular filtration barrier. Megalin and cubilin/amnionless (CUBAM) receptors engage Dab2 in these cells to mediate clathrin-dependent uptake of filtered ligands. Knockout of megalin or Dab2 profoundly inhibits apical endocytosis and is believed to atrophy the endocytic pathway. We generated CRISPR/Cas9 knockout (KO) clones lacking cubilin, megalin, or Dab2 expression in highly differentiated PT cells and determined the impact on albumin internalization and endocytic pathway function. KO of each component had different effects on the concentration dependence of albumin uptake as well its distribution within PT cells. Reduced uptake of a fluid phase marker was also observed, with megalin KO cells having the most dramatic decline. Surprisingly, protein levels and distribution of key endocytic proteins were preserved in KO PT cell lines and in megalin KO mice, despite the reduced endocytic activity. Our data highlight specific functions of megalin, cubilin, and Dab2 in apical endocytosis and demonstrate that these proteins drive endocytic flux without compromising the physical integrity of the apical endocytic pathway. Our studies suggest a novel model to explain how these components coordinate endocytic uptake in PT cells.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.