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Krisanova N, Pozdnyakova N, Pastukhov A, Dudarenko M, Tarasenko A, Borysov A, Driuk M, Tolochko A, Bezkrovnyi O, Paliienko K, Sivko R, Gnatyuk O, Dovbeshko G, Borisova T. Synergistic neurological threat from Сu and wood smoke particulate matter. Food Chem Toxicol 2024; 193:115009. [PMID: 39304082 DOI: 10.1016/j.fct.2024.115009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2024] [Revised: 09/08/2024] [Accepted: 09/16/2024] [Indexed: 09/22/2024]
Abstract
Trace metal Cu and carbonaceous airborn particulate matter (PM) are dangerous neuropollutants. Here, the ability of Cu2+ to modulate the neurotoxicity caused by water-suspended wood smoke PM preparations (SPs) and vice versa was examined using presynaptic rat cortex nerve terminals. Interaction of Cu2+ and SPs, changes of particle size and surface properties were shown in the presence of Cu2+ using microscopy, DLS, and IR spectroscopy. In nerve terminals, Cu2+ and SPs per se elevated the ambient levels of excitatory and inhibitory neurotransmitters L-[14C]glutamate and [3H]GABA, respectively. During combined application, Cu2+ significantly enhanced a SPs-induced increase in the ambient levels of both neurotransmitters, thereby demonstrating a cumulative synergistic effect and significant interference in the neurotoxic threat associated with Cu2+and SPs. In fluorimetric measurements, Cu2+ and SPs also demonstrated cumulative synergistic effects on the membrane potential, mitochondrial potential, synaptic vesicle acidification and ROS generation. Therefore, synergistic effects of Cu2+ and SPs on the most crucial presynaptic characteristics and neurohazard of multiple pollutants through excitatory/inhibitory imbalance, disruption of the membrane and mitochondrial potential, vesicle acidification and ROS generation were revealed. Increased expansion and burden of neuropathology may result from underestimation of synergistic interference of the neurotoxic effects of Cu2+ and carbonaceous smoke PM.
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Affiliation(s)
- Nataliya Krisanova
- Department of Neurochemistry, Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, 9 Leontovicha str, Kyiv, 01054, Ukraine; Optical Spectroscopy Division, Institute of Low Temperature and Structure Research Polish Academy of Sciences, Okólna 2, Wrocław, 50-422, Poland
| | - Natalia Pozdnyakova
- Department of Neurochemistry, Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, 9 Leontovicha str, Kyiv, 01054, Ukraine
| | - Artem Pastukhov
- Department of Neurochemistry, Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, 9 Leontovicha str, Kyiv, 01054, Ukraine
| | - Marina Dudarenko
- Department of Neurochemistry, Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, 9 Leontovicha str, Kyiv, 01054, Ukraine
| | - Alla Tarasenko
- Department of Neurochemistry, Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, 9 Leontovicha str, Kyiv, 01054, Ukraine
| | - Arsenii Borysov
- Department of Neurochemistry, Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, 9 Leontovicha str, Kyiv, 01054, Ukraine
| | - Mykola Driuk
- Department of Neurochemistry, Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, 9 Leontovicha str, Kyiv, 01054, Ukraine
| | - Anatoliy Tolochko
- Department of Physics of Biological Systems, Institute of Physics, National Academy of Sciences of Ukraine, 46 Nauky Ave, Kyiv, 03680, Ukraine
| | - Oleksii Bezkrovnyi
- Optical Spectroscopy Division, Institute of Low Temperature and Structure Research Polish Academy of Sciences, Okólna 2, Wrocław, 50-422, Poland
| | - Konstantin Paliienko
- Department of Neurochemistry, Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, 9 Leontovicha str, Kyiv, 01054, Ukraine
| | - Roman Sivko
- Department of Neurochemistry, Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, 9 Leontovicha str, Kyiv, 01054, Ukraine
| | - Olena Gnatyuk
- Department of Physics of Biological Systems, Institute of Physics, National Academy of Sciences of Ukraine, 46 Nauky Ave, Kyiv, 03680, Ukraine; Optical Spectroscopy Division, Institute of Low Temperature and Structure Research Polish Academy of Sciences, Okólna 2, Wrocław, 50-422, Poland
| | - Galyna Dovbeshko
- Department of Physics of Biological Systems, Institute of Physics, National Academy of Sciences of Ukraine, 46 Nauky Ave, Kyiv, 03680, Ukraine; Optical Spectroscopy Division, Institute of Low Temperature and Structure Research Polish Academy of Sciences, Okólna 2, Wrocław, 50-422, Poland
| | - Tatiana Borisova
- Department of Neurochemistry, Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, 9 Leontovicha str, Kyiv, 01054, Ukraine; Optical Spectroscopy Division, Institute of Low Temperature and Structure Research Polish Academy of Sciences, Okólna 2, Wrocław, 50-422, Poland.
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Li Q, Guo P, Wang S, Feng Y, Zhang H, Yu W, Liao J, Tang Z. Mitochondrial derived vesicle-carrying protein MIGA2 promotes copper-induced autophagosomes-lysosomes fusion by regulating ATG14. JOURNAL OF HAZARDOUS MATERIALS 2024; 467:133703. [PMID: 38354437 DOI: 10.1016/j.jhazmat.2024.133703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 01/24/2024] [Accepted: 01/31/2024] [Indexed: 02/16/2024]
Abstract
As an environmental pollution metal, copper (Cu) exposure-induced toxicity is closely related to mitochondrial damage. Mitochondrial-derived vesicles (MDVs) plays an essential role in mitochondrial quality control and cellular metabolism. However, the mechanism by which MDVs are involved in cellular metabolism under Cu exposure remains unclear. Here, the MDV-carrying protein MIGA2 was identified as a crucial molecule involved in the Cu-induced autophagosomes-lysosomes fusion. Furthermore, Cu exposure significantly promoted MDVs secretion, accompanied by a markedly increased MIGA2 expression in MDVs, as well as accelerated the autophagosomes-lysosomes fusion. However, small RNA interference of SNX9 (the MDVs secretion inductor) and MIGA2 blocked autophagic flux induced by Cu, leading to failure of autophagosomes degradation. Co-immunoprecipitation assay further demonstrated that ATG14 was a regulation target protein of MIGA2. Overexpression and knockdown of ATG14 significantly affected the autophagosomes-lysosomes fusion induced by Cu. Meanwhile, knockdown of ATG14 dramatically reversed the effect of MIGA2-overexpression in promoting autophagosomes-lysosomes fusion, while overexpression of ATG14 shows the opposite effect. These results demonstrated that MDVs-carrying MIGA2 protein promoted autophagosomes-lysosomes fusion induced by Cu. This study demonstrated that MDVs is involved in regulating organelles-to-organelles communication, providing a new insight into the toxicity mechanism of Cu exposure on hepatocytes.
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Affiliation(s)
- Quanwei Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, Guangdong, PR China
| | - Pan Guo
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, Guangdong, PR China
| | - Shaofeng Wang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, Guangdong, PR China
| | - Yuanhong Feng
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, Guangdong, PR China
| | - Hui Zhang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, Guangdong, PR China
| | - Wenlan Yu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, Guangdong, PR China
| | - Jianzhao Liao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, Guangdong, PR China
| | - Zhaoxin Tang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, Guangdong, PR China.
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