Regulatory mechanisms of miR-96 and miR-184 abnormal expressions on otic vesicle development of zebrafish following exposure to β-diketone antibiotics

Copyright © 2018 Elsevier Ltd. All rights reserved..

Chronic ototoxicity of β-diketone antibiotics (DKAs) to zebrafish (Danio rerio) was explored in detail by following abnormal expressions of two hearing-related miRNAs. Dose-dependent down-regulation of miR-96 and miR-184 was observed in otoliths during embryonic-larval development. Continuous DKA exposure to 120-hpf larva decreased sensitivity to acoustic stimulation. Development of otolith was delayed in treatment groups, showing unclear boundaries and vacuolization at 72-hpf, and utricular enlargement as well as decreased saccular volume in 96-hpf or latter larval otoliths. If one miRNA was knocked-down and another over-expressed, only a slight influence on morphological development of the otic vesicle occurred, but knocked-down or over-expressed miRNA both significantly affected zebrafish normal development. Injection of miR-96, miR-184 or both micRNA mimics to yolk sac resulted in marked improvement of otic vesicle phenotype. However, hair cell staining showed that only the injected miR-96 mimic restored hair cell numbers after DKA exposure, demonstrating that miR-96 played an important role in otic vesicle development and formation of hearing, while miR-184 was only involved in otic vesicle construction during embryonic development. These observations advance our understanding of hearing loss owing to acute antibiotic exposure and provide theoretical guidance for early intervention and gene therapy for drug-induced diseases.

Medienart:

E-Artikel

Erscheinungsjahr:

2019

Erschienen:

2019

Enthalten in:

Zur Gesamtaufnahme - volume:214

Enthalten in:

Chemosphere - 214(2019) vom: 15. Jan., Seite 228-238

Sprache:

Englisch

Beteiligte Personen:

Li, Jieyi [VerfasserIn]
Ling, Yuhang [VerfasserIn]
Huang, Wenhao [VerfasserIn]
Sun, Limei [VerfasserIn]
Li, Yanyan [VerfasserIn]
Wang, Caihong [VerfasserIn]
Zhang, Yuhuan [VerfasserIn]
Wang, Xuedong [VerfasserIn]
Dahlgren, Randy A [VerfasserIn]
Wang, Huili [VerfasserIn]

Links:

Volltext

Themen:

β-Diketone antibiotics
Anti-Bacterial Agents
Hearing loss
Journal Article
Ketones
MiR-184
MiR-96
MicroRNAs
Otic vesicle
Ototoxicity

Anmerkungen:

Date Completed 21.12.2018

Date Revised 21.12.2018

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.chemosphere.2018.09.118

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM28901722X