ArticlePharmacology research & perspectives2021
Suppression of collagen IV alpha-2 subunit by prolyl hydroxylase domain inhibition via hypoxia-inducible factor-1 in chronic kidney disease.
Article in Pharmacology research & perspectives, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 10 citations in OpenAlex.
- Association of Three HIF-1α Genotypes With Susceptibility and Severity of Chronic Kidney Disease.Clinical and translational science · 2026Article
- Network pharmacology and experimental validation of asiaticoside protecting against diabetic kidney disease by regulating 11β-hydroxysteroid dehydrogenase type 2.Journal of traditional Chinese medicine = Chung i tsa chih ying wen pan · 2026Article
- The expression pattern and prognostic relevance of p120-catenin, COL4A2 and SOX10 in glioma.Frontiers in oncology · 2026Article
- Hypoxia-Induced Metabolic Reprogramming and Markings of Cell Fate in Concentric Arterial Hypertrophy.bioRxiv : the preprint server for biology · 2025Article
- Review
- Expression Regulation of Water Reabsorption Genes and Transcription Factors in the Kidneys ofFrontiers in physiology · 2022Article
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Elevation of hypoxia-inducible factor 1 protein has been shown to be protective in acute kidney injury and HIF1α enhancing drug therapies are currently in clinical trials for the treatment of anemia of chronic kidney disease. Despite its benefits, long-term HIF1 elevation seems to be associated with additional effects in the kidneys such as tubulointerstitial fibrosis. To better understand the effects of prolonged HIF1 exposure, assessment of baseline and post-therapy levels of HIF1α and other related biomarkers is essential. In this study, we assessed the effect of HIF1α enhancement using prolyl hydroxylase inhibitor (PHD-I) DMOG, on a key profibrotic marker of kidney disease. In specific, we examined the change in expression of Collagen 4 subunit A2 in cultured urinary cells of CKD patients pre and post 24-hour exposure to 1mM DMOG. Our results show that besides HIF1α enhancement, COL4A2 protein is suppressed in presence of DMOG. To determine if this effect is mediated by HIF1, we used HIF1α gene silencing in HEK293 cells and examined the effect of DMOG on protein and gene expression of COL4A2 post 24-hour exposure. We showed that silencing HIF1α reverses and amplifies the expression of COL4A2 in HEK293 cells. Our data suggest that HIF1 directly regulates the expression of COL4A2 in kidney cells and that HIF1α enhancing therapy has suppressive effects on COL4A2 that may be clinically relevant and must be considered in determining the safety and efficacy of these drugs in the treatment of anemia.
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