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LOSS OF RETINOID RECEPTORS RAR-A AND RXR-A DURING MONOCROTALIN/LIPOPOLYSACCHARIDE-INDUCED RENAL TOXICITY IS TISSUE FACTOR DEPENDENT

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Last updated: 22 Jan 2023

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Abstract

Retinoic acid receptors (RARs) are ligand-controlled transcription factors that function as heterodimers with retinoid X receptors (RXRs) to regulate cell growth, differentiation, survival and death. Due to their regulatory potential, these nuclear receptors (NRs) are major drug targets for a variety of pathologies, including cancer and metabolic diseases. We reported earlier the involvement of tissue factor (TF) in the release of retinoid receptors RAR-α and RXR-α as accumulated lipid droplet during monocrotaline/lipopolysaccharide (MCT/LPS)-liver injury in mice. In the kidney, little is known about the localization and the functional significance of RXR-a and RAR- a. In this study, we were able to find RXR-a receptor in distal, proximal tubules as well as glomeruli of mice kidney. In addition, RAR-a expression is restricted to the glomeruli and endothelial cells of the blood vessels. Furthermore, following MCT/LPS co-treatment, we found the translocation of RXR-a from basolateral into the apical site in the distal tubules and collecting duct along with downregulation of glomerular RAR-a. This study reports the involvement of TF in the tubular translocation of retinoid receptor RXR-α and the glomerular downregulation of RAR-a during MCT/LPS-renal injury. The fact that TF antisense oligonucleotides (TF-AS ODN) treatment not only down-regulated TF but also obliterated the tubular translocation of RXR-a and glomerular RAR-a downregulation points towards TF being an important regulatory molecule for renal RAR-α and RXR-α. 

DOI

10.21608/ajps.2012.7139

Keywords

Tissue Factor, retinoic acid receptor alpha, retinoid X receptor alpha, tissue factor antisense oligodeoxynucleotides

Authors

First Name

Mohamed

Last Name

Abdel-Bakky

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Affiliation

Faculty of Pharmacy, Al-Azhar University, Nasr City, Cairo, Egypt

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Volume

46

Article Issue

2

Related Issue

1354

Issue Date

2012-09-01

Receive Date

2018-05-14

Publish Date

2012-09-01

Page Start

100

Page End

114

Print ISSN

1110-1644

Online ISSN

2535-1958

Link

https://ajps.journals.ekb.eg/article_7139.html

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https://ajps.journals.ekb.eg/service?article_code=7139

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8

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Original Article

Type Code

518

Publication Type

Journal

Publication Title

Al-Azhar Journal of Pharmaceutical Sciences

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https://ajps.journals.ekb.eg/

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Article

Created At

22 Jan 2023