Microplastics Accumulation Induces Kynurenine-Derived Neurotoxicity in Cerebral Organoids and Mouse Brain.

IF 3 3区 医学 Q2 PHARMACOLOGY & PHARMACY
Sung Bum Park, Jeong Hyeon Jo, Seong Soon Kim, Won Hoon Jung, Myung Ae Bae, Byumseok Koh, Ki Young Kim
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引用次数: 0

Abstract

Microplastics are pervasive environmental pollutants with potential adverse effects on human health, particularly concerning neurotoxicity. This study investigates the accumulation and neurotoxic effects of MP in cerebral organoids and mouse brains. Utilizing in vitro cerebral organoids and in vivo mouse models, we examined the penetration of MP, revealing that smaller MP (50 nm) infiltrated deeper into the organoids compared to larger ones (100 nm). Exposure to 50 nm MP resulted in a significant reduction in organoid viability. Furthermore, total RNA sequencing indicated substantial alterations in neurotoxicity-related gene expression. In vivo, MP-treated mice exhibited notable DNA fragmentation in the hippocampus and cortex, alongside elevated levels of inflammatory markers and neurotoxic metabolites, such as kynurenine (KYN) and 3-hydroxykynurenine (3-HK). Our findings suggest that MP may promote neurotoxicity through the kynurenine pathway, leading to heightened levels of neurotoxic compounds like quinolinic acid. This research highlights the potential for MP to induce neuroinflammatory responses and disrupt normal brain function, underscoring the need for further investigation into the long-term effects of MP exposure on neurological health.

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来源期刊
CiteScore
6.60
自引率
8.10%
发文量
72
审稿时长
6-12 weeks
期刊介绍: Biomolecules & Therapeutics (Biomolecules & Therapeutics) (Print ISSN 1976-9148, Online ISSN 2005-4483) is an international, peer-reviewed, open access journal that covers pharmacological and toxicological fields related to bioactive molecules and therapeutics. It was launched in 1993 as "The Journal of Applied Pharmacology (ISSN 1225-6110)", and renamed "Biomolecules & Therapeutics" (Biomol Ther: abbreviated form) in 2008 (Volume 16, No. 1). It is published bimonthly in January, March, May, July, September and November. All manuscripts should be creative, informative, and contribute to the development of new drugs. Articles in the following categories are published: review articles and research articles.
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