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Characterization of aquaporin-1ab (Aqp1ab) mRNA in mud loach (Misgurnus mizolepis) exposed to heavy metal and immunostimulant stimuli.

Characterization of aquaporin-1ab (Aqp1ab) mRNA in mud loach (Misgurnus mizolepis) exposed to heavy metal and immunostimulant stimuli.

Authors :
Lee SY
Nam YK
Kim YK
Source :
Comparative biochemistry and physiology. Part A, Molecular & integrative physiology [Comp Biochem Physiol A Mol Integr Physiol] 2022 Aug; Vol. 270, pp. 111226. Date of Electronic Publication: 2022 Apr 27.
Publication Year :
2022

Abstract

Aquaporins (AQPs) are key proteins that regulate fluid homeostasis in cells via modulating osmotic water transport. In the present study, we identified three variants of Aqp1ab transcript (mmAQP1ab x1, mmAQP1ab x2, and mmAQP1ab x3) in mud loaches (Misgurnus mizolepis), and their expression patterns were examined in response to heavy metal and immunostimulant exposure. Mud loach Aqp1ab gene has a somewhat different organizational structure (i.e. five exons interrupted by four introns) compared to most other teleostean Aqp1ab orthologues, which have four exons. The 5'-flanking regulatory region of Aqp gene showed diverse transcription factor binding motifs, particularly those associated with stress/immune responses. Developmental expression patterns indicated that Aqp1ab mRNA was maternally inherited, presumably important for fine-tuning gene expression during embryonic and early larval developments. Expression of mud loach Aqp1ab mRNA was significantly and differentially modulated in several tissues (intestine, kidneys, spleen, and liver) in response to various heavy metal treatments. In addition, Aqp1ab gene expression was highly induced in response to immune challenge (LPS and polyI:C injections). Collectively, our results suggested that AQPs are multifunctional effectors playing diverse roles in cellular pathways relevant to immune and/or stress adaptation responses, in addition to their involvement in osmoregulation.<br /> (Copyright © 2022 Elsevier Inc. All rights reserved.)

Details

Language :
English
ISSN :
1531-4332
Volume :
270
Database :
MEDLINE
Journal :
Comparative biochemistry and physiology. Part A, Molecular & integrative physiology
Publication Type :
Academic Journal
Accession number :
35489610
Full Text :
https://doi.org/10.1016/j.cbpa.2022.111226