Morphologically different hydroxyapatite nanoparticles exert differential genotoxic effects in Drosophila

Copyright © 2023 The Authors. Published by Elsevier B.V. All rights reserved..

Hydroxyapatite (HAP) occurs naturally in sedimentary and metamorphic rocks and constitutes the hard structures in many organisms. Since synthetic nano-sized HAP (HAP-NPs) are used in orthopedic applications and for heavy metal remediation in aquatic and terrestrial media, both environment and humans are exposed to them. Due to the concerns about their potential hazards, the genotoxic effects that round/rod forms of HAP-NPs were investigated in Drosophila using the wing-spot and the comet assays. Furthermore, caspase activities were evaluated to examine the activation of cell death pathways. As a novelty, the expression of 36 genes involved in DNA repair was investigated, as a tool to indirectly determine DNA damage induction. Obtained sizes were 35-60 nm (roundHAP-NPs) and 45-90 nm (rodHAP-NPs) with a low Zeta-potential (-1.65 and 0.37 mV, respectively). Genotoxicity was detected in the wing-spot (round form), and in the comet assay (round and rod-like HA-NPs). In addition, increased expression of Caspases 3/7, 8, and 9 activities were observed. For both HAP forms, increased changes in the expression were observed for mismatch repair genes, while decreased expression was observed for genes involved in ATM, ATR, and cell cycle pathways. The observed changes in the repair pathways would reinforce the view that HAP-NPs have genotoxic potential, although more markedly in the round form. Thus, the environmental presence of engineered nanoparticles, including HAPs, raises concerns about potential effects on human health. It is essential that the effects of their use are carefully assessed and monitored to ensure safety and to mitigate any potential adverse effects.

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:904

Enthalten in:

The Science of the total environment - 904(2023) vom: 15. Dez., Seite 166556

Sprache:

Englisch

Beteiligte Personen:

Güneş, Merve [VerfasserIn]
Yalçın, Burçin [VerfasserIn]
Burgazlı, Ayşen Yağmur [VerfasserIn]
Tagorti, Ghada [VerfasserIn]
Yavuz, Emre [VerfasserIn]
Akarsu, Esin [VerfasserIn]
Kaya, Nuray [VerfasserIn]
Marcos, Ricard [VerfasserIn]
Kaya, Bülent [VerfasserIn]

Links:

Volltext

Themen:

91D9GV0Z28
Caspase
DNA repair
Drosophila melanogaster
Durapatite
Gene expression
Journal Article
Single-cell gel electrophoresis
Somatic mutation and recombination

Anmerkungen:

Date Completed 06.11.2023

Date Revised 06.11.2023

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.scitotenv.2023.166556

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM361315554