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Li Z, Liu X, Cai N, Zhou Z, Huang H, Wu Q, Xu L, Zhu WG, Zhang C, Wei Z, Li D. Immune checkpoint reprogramming via sequential nucleic acid delivery strategy optimizes systemic immune responses for gastrointestinal cancer immunotherapy. Cancer Lett 2024; 599:217152. [PMID: 39094825 DOI: 10.1016/j.canlet.2024.217152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2024] [Revised: 07/11/2024] [Accepted: 07/31/2024] [Indexed: 08/04/2024]
Abstract
Monoclonal antibodies targeting immune checkpoints have been widely applied in gastrointestinal cancer immunotherapy. However, systemic administration of various monoclonal antibodies does not often result in sustained effects in reversing the immunosuppressive tumor microenvironment (TME), which may be due to the spatiotemporal dynamic changes of immune checkpoints. Herein, we reported a novel immune checkpoint reprogramming strategy for gastrointestinal cancer immunotherapy. It was achieved by the sequential delivery of siPD-L1 (siRNA for programmed cell death ligand 1) and pOX40L (plasmid for OX40 ligand), which were complexed with two cationic polymer brush-grafted carbon nanotubes (dense short (DS) and dense long (DL)) designed based on the structural characteristics of nucleic acids and brush architectures. Upon administrating DL/pOX40L for the first three dosages, then followed by DS/siPD-L1 for the next three dosages to the TME, it upregulated the stimulatory checkpoint OX40L on dendritic cells (DCs) and downregulated inhibitory checkpoint PD-L1 on tumor cells and DCs in a sequential reprogramming manner. Compared with other combination treatments, this sequential strategy drastically boosted the DCs maturation, and CD8+ cytotoxic T lymphocytes infiltration in tumor site. Furthermore, it could augment the local antitumor response and improve the T cell infiltration in tumor-draining lymph nodes to reverse the peripheral immunosuppression. Our study demonstrated that sequential nucleic acid delivery strategy via personalized nanoplatforms effectively reversed the immunosuppression status in both tumor microenvironment and peripheral immune landscape, which significantly enhanced the systemic antitumor immune responses and established an optimal immunotherapy strategy against gastrointestinal cancer.
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Affiliation(s)
- Zhuoyuan Li
- Guangdong Provincial Key Laboratory of Digestive Cancer Research, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China; Digestive Diseases Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Xinran Liu
- Guangdong Provincial Key Laboratory of Digestive Cancer Research, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China; Digestive Diseases Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Nan Cai
- Guangdong Provincial Key Laboratory of Digestive Cancer Research, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China; Digestive Diseases Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Zhijun Zhou
- Department of Medicine, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA
| | - Huaping Huang
- Guangdong Provincial Key Laboratory of Digestive Cancer Research, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China; Digestive Diseases Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Qiang Wu
- Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Lizhou Xu
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 311215, China
| | - Wei-Guo Zhu
- Department of Biochemistry and Biophysics, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China; International Cancer Center, Guangdong Key Laboratory of Genome Instability and Human Disease Prevention, Marshall Laboratory of Biomedical Engineering, Department of Biochemistry and Molecular Biology, Shenzhen University Medical School, Shenzhen, 518055, China.
| | - Changhua Zhang
- Guangdong Provincial Key Laboratory of Digestive Cancer Research, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China; Digestive Diseases Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China.
| | - Zhewei Wei
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China; Gastric Cancer Center of Sun Yat-sen University, Guangzhou, 510080, China.
| | - Danyang Li
- Guangdong Provincial Key Laboratory of Digestive Cancer Research, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China; Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China.
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Zhu L, Zhu D, Ran J, Li M, Lai Z, Zhou Y, Luo L, Liu X, Mao K, Tian K. Autophagy aggravates multi-walled carbon nanotube-induced ferroptosis by suppressing PGC-1 dependent-mitochondrial biogenesis in lung epithelial cells. Chem Biol Interact 2024; 400:111158. [PMID: 39033796 DOI: 10.1016/j.cbi.2024.111158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 07/10/2024] [Accepted: 07/19/2024] [Indexed: 07/23/2024]
Abstract
Multi-walled carbon nanotube (MWCNT) induced respiratory toxicity has become a growing concern, with ferroptosis emerging as a novel mechanism implicated in various respiratory diseases. However, whether ferroptosis is involved in MWCNT-elicited lung injury and the underlying molecular mechanisms warrant further exploration. In this study, we found that MWCNT-induced ferroptosis is autophagy-dependent, contributing to its cellular toxicity. Inhibiting of autophagy by pharmacological inhibitors 3-MA or ATG5 gene knockdown significantly attenuated MWCNT-induced ferroptosis, concomitant with rescued mitochondrial biogenesis. Rapamycin, the autophagy agonist, exacerbated the mitochondrial damage and MWCNT-induced ferroptosis. Moreover, lentivirus-mediated overexpression of PGC-1α inhibited ferroptosis, while inhibition of PGC-1α aggravated ferroptosis. In summary, our study unveils ferroptosis as a novel mechanism underlying MWCNT-induced respiratory toxicity, with autophagy promoting MWCNT-induced ferroptosis by hindering PGC-1α-dependent mitochondrial biogenesis.
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Affiliation(s)
- Lin Zhu
- School of Public Health, Zunyi Medical University, Zunyi, 563000, Guizhou, China; Key Laboratory of Anesthesia and Organ Protection of Ministry of Education (incubation), Zunyi Medical University, Guizhou, China
| | - Deyu Zhu
- School of Public Health, Zunyi Medical University, Zunyi, 563000, Guizhou, China
| | - Jiahui Ran
- School of Public Health, Zunyi Medical University, Zunyi, 563000, Guizhou, China
| | - Maojie Li
- School of Public Health, Zunyi Medical University, Zunyi, 563000, Guizhou, China
| | - Zhebin Lai
- School of Public Health, Zunyi Medical University, Zunyi, 563000, Guizhou, China
| | - Yan Zhou
- School of Public Health, Zunyi Medical University, Zunyi, 563000, Guizhou, China
| | - Lei Luo
- School of Public Health, Zunyi Medical University, Zunyi, 563000, Guizhou, China
| | - Xiliang Liu
- Key Laboratory of Anesthesia and Organ Protection of Ministry of Education (incubation), Zunyi Medical University, Guizhou, China
| | - Kanmin Mao
- Department of Nutrition and Food Hygiene, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Kunming Tian
- School of Public Health, Zunyi Medical University, Zunyi, 563000, Guizhou, China; Key Laboratory of Maternal & Child Health and Exposure Science of Guizhou Higher Education Institutes, Zunyi Medical University, Zunyi, 563000, Guizhou, China.
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Hiyoshi T, Nishime C, Nishinaka E, Seki F, Kawai K, Mochizuki M, Urano K, Imai T, Yamamoto T, Suzuki M. Induction of lung lesions by bronchial administration using bronchoscope technique in mice. J Toxicol Pathol 2024; 37:93-97. [PMID: 38584970 PMCID: PMC10995434 DOI: 10.1293/tox.2023-0123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 01/30/2024] [Indexed: 04/09/2024] Open
Abstract
This study aimed to establish an exposure method that can induce homogeneous lesions with minimal inter-individual variability. The distribution of lesions induced by bleomycin (BLM) administration was also analyzed. C57BL mice were intrabronchially administered 20 µL of BLM (3 mg/mL) using a bronchoscope in the left or right bronchus. The mice were sacrificed 14 days after administration, and their lungs were evaluated histopathologically. BLM-induced inflammatory lesions were widely observed in the lungs. In the left bronchus-treated group, lesions were uniformly observed throughout the lobe, and no individual differences were noted. Meanwhile, in the right bronchus-treated group, individual differences in the distribution of the pulmonary lesions were observed. The distribution of lesions differed among the four lobes of the right lung owing to their anatomical features. Administration into the left bronchus is recommended for highly homogeneous lung exposure and for establishing models that contribute to highly accurate toxicity and efficacy evaluations.
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Affiliation(s)
- Takako Hiyoshi
- Translational Research Division, Central Institute for
Experimental Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa
210-0821, Japan
- CLEA Japan Inc., 4839-23 Kitayama, Fujinomiya, Shizuoka
418-0112, Japan
| | - Chiyoko Nishime
- Translational Research Division, Central Institute for
Experimental Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa
210-0821, Japan
| | - Eiko Nishinaka
- Translational Research Division, Central Institute for
Experimental Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa
210-0821, Japan
| | - Fumiko Seki
- Bioimaging Center, Central Institute for Experimental
Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa 210-0821,
Japan
| | - Kenji Kawai
- Translational Research Division, Central Institute for
Experimental Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa
210-0821, Japan
| | - Misa Mochizuki
- Translational Research Division, Central Institute for
Experimental Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa
210-0821, Japan
| | - Koji Urano
- Translational Research Division, Central Institute for
Experimental Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa
210-0821, Japan
| | - Toshio Imai
- Translational Research Division, Central Institute for
Experimental Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa
210-0821, Japan
| | - Taichi Yamamoto
- Translational Research Division, Central Institute for
Experimental Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa
210-0821, Japan
| | - Masami Suzuki
- Translational Research Division, Central Institute for
Experimental Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa
210-0821, Japan
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Reamon-Buettner SM, Rittinghausen S, Klauke A, Hiemisch A, Ziemann C. Malignant peritoneal mesotheliomas of rats induced by multiwalled carbon nanotubes and amosite asbestos: transcriptome and epigenetic profiles. Part Fibre Toxicol 2024; 21:3. [PMID: 38297314 PMCID: PMC10829475 DOI: 10.1186/s12989-024-00565-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 01/25/2024] [Indexed: 02/02/2024] Open
Abstract
BACKGROUND Malignant mesothelioma is an aggressive cancer that often originates in the pleural and peritoneal mesothelium. Exposure to asbestos is a frequent cause. However, studies in rodents have shown that certain multiwalled carbon nanotubes (MWCNTs) can also induce malignant mesothelioma. The exact mechanisms are still unclear. To gain further insights into molecular pathways leading to carcinogenesis, we analyzed tumors in Wistar rats induced by intraperitoneal application of MWCNTs and amosite asbestos. Using transcriptomic and epigenetic approaches, we compared the tumors by inducer (MWCNTs or amosite asbestos) or by tumor type (sarcomatoid, epithelioid, or biphasic). RESULTS Genome-wide transcriptome datasets, whether grouped by inducer or tumor type, showed a high number of significant differentially expressed genes (DEGs) relative to control peritoneal tissues. Bioinformatic evaluations using Ingenuity Pathway Analysis (IPA) revealed that while the transcriptome datasets shared commonalities, they also showed differences in DEGs, regulated canonical pathways, and affected molecular functions. In all datasets, among highly- scoring predicted canonical pathways were Phagosome Formation, IL8 Signaling, Integrin Signaling, RAC Signaling, and TREM1 Signaling. Top-scoring activated molecular functions included cell movement, invasion of cells, migration of cells, cell transformation, and metastasis. Notably, we found many genes associated with malignant mesothelioma in humans, which showed similar expression changes in the rat tumor transcriptome datasets. Furthermore, RT-qPCR revealed downregulation of Hrasls, Nr4a1, Fgfr4, and Ret or upregulation of Rnd3 and Gadd45b in all or most of the 36 tumors analyzed. Bisulfite sequencing of Hrasls, Nr4a1, Fgfr4, and Ret revealed heterogeneity in DNA methylation of promoter regions. However, higher methylation percentages were observed in some tumors compared to control tissues. Lastly, global 5mC DNA, m6A RNA and 5mC RNA methylation levels were also higher in tumors than in control tissues. CONCLUSIONS Our findings may help better understand how exposure to MWCNTs can lead to carcinogenesis. This information is valuable for risk assessment and in the development of safe-by-design strategies.
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Affiliation(s)
- Stella Marie Reamon-Buettner
- Fraunhofer Institute for Toxicology and Experimental Medicine (ITEM), Nikolai-Fuchs-Strasse 1, 30625, Hannover, Germany.
| | - Susanne Rittinghausen
- Fraunhofer Institute for Toxicology and Experimental Medicine (ITEM), Nikolai-Fuchs-Strasse 1, 30625, Hannover, Germany
| | - Annika Klauke
- Fraunhofer Institute for Toxicology and Experimental Medicine (ITEM), Nikolai-Fuchs-Strasse 1, 30625, Hannover, Germany
| | - Andreas Hiemisch
- Fraunhofer Institute for Toxicology and Experimental Medicine (ITEM), Nikolai-Fuchs-Strasse 1, 30625, Hannover, Germany
| | - Christina Ziemann
- Fraunhofer Institute for Toxicology and Experimental Medicine (ITEM), Nikolai-Fuchs-Strasse 1, 30625, Hannover, Germany
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Fatkhutdinova LM, Gabidinova GF, Daminova AG, Dimiev AM, Khamidullin TL, Valeeva EV, Cokou AEE, Validov SZ, Timerbulatova GA. Mechanisms related to carbon nanotubes genotoxicity in human cell lines of respiratory origin. Toxicol Appl Pharmacol 2024; 482:116784. [PMID: 38070752 DOI: 10.1016/j.taap.2023.116784] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 11/28/2023] [Accepted: 12/02/2023] [Indexed: 12/22/2023]
Abstract
Potential genotoxicity and carcinogenicity of carbon nanotubes (CNT), as well as the underlying mechanisms, remains a pressing topic. The study aimed to evaluate and compare the genotoxic effect and mechanisms of DNA damage under exposure to different types of CNT. Immortalized human cell lines of respiratory origin BEAS-2B, A549, MRC5-SV40 were exposed to three types of CNT: MWCNT Taunit-M, pristine and purified SWCNT TUBALL™ at concentrations in the range of 0.0006-200 μg/ml. Data on the CNT content in the workplace air were used to calculate the lower concentration limit. The genotoxic potential of CNTs was investigated at non-cytotoxic concentrations using a DNA comet assay. We explored reactive oxygen species (ROS) formation, direct genetic material damage, and expression of a profibrotic factor TGFB1 as mechanisms related to genotoxicity upon CNT exposure. An increase in the number of unstable DNA regions was observed at a subtoxic concentration of CNT (20 μg/ml), with no genotoxic effects at concentrations corresponding to industrial exposures being found. While the three test articles of CNTs exhibited comparable genotoxic potential, their mechanisms appeared to differ. MWCNTs were found to penetrate the nucleus of respiratory cells, potentially interacting directly with genetic material, as well as to enhance ROS production and TGFB1 gene expression. For A549 and MRC5-SV40, genotoxicity depended mainly on MWCNT concentration, while for BEAS-2B - on ROS production. Mechanisms of SWCNT genotoxicity were not so obvious. Oxidative stress and increased expression of profibrotic factors could not fully explain DNA damage under SWCNT exposure, and other mechanisms might be involved.
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Affiliation(s)
| | | | | | - Ayrat M Dimiev
- Kazan Federal University, Laboratory for Advanced Carbon Nanomaterials, Kazan 420008, Russian Federation
| | - Timur L Khamidullin
- Kazan Federal University, Laboratory for Advanced Carbon Nanomaterials, Kazan 420008, Russian Federation
| | - Elena V Valeeva
- Kazan State Medical University, Kazan 420012, Russian Federation
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Sato K, Fukui H, Hagiwara Y, Ogawa R, Nishioka A, Numano T, Sugiyama T, Kawabe M, Mera Y, Yoneda T. Difference in carcinogenicities of two different vapor grown carbon fibers with different physicochemical characteristics induced by intratracheal instillation in rats. Part Fibre Toxicol 2023; 20:37. [PMID: 37770972 PMCID: PMC10537556 DOI: 10.1186/s12989-023-00547-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 08/29/2023] [Indexed: 09/30/2023] Open
Abstract
BACKGROUND Carbon fibers are high aspect ratio structures with diameters on the submicron scale. Vapor grown carbon fibers are contained within multi-walled carbon tubes, with VGCF™-H commonly applied as a conductive additive in lithium-ion batteries. However, several multi-walled carbon fibers, including MWNT-7, have been reported to induce lung carcinogenicity in rats. This study investigated the carcinogenic potential of VGCF™-H fibers in F344 rats of both sexes with the vapor grown carbon fibers VGCF™-H and MWNT-7 over 2 years. The carbon fibers were administered to rats by intratracheal instillation at doses of 0, 0.016, 0.08, and 0.4 mg/kg (total doses of 0, 0.128, 0.64, and 3.2 mg/kg) once per week for eight weeks and the rats were observed for up to 2 years after the first instillation. RESULTS Histopathological examination showed the induction of malignant mesothelioma on the pleural cavity with dose-dependent increases observed at 0, 0.128, 0.64, and 3.2 mg/kg in rats of both sexes that were exposed to MWNT-7. On the other hand, only two cases of pleural malignant mesothelioma were observed in the VGCF™-H groups; both rats that received 3.2 mg/kg in male. The animals in the MWNT-7 groups either died or became moribund earlier than those in the VGCF™-H groups, which is thought related to the development of malignant mesothelioma. The survival rates were higher in the VGCF™-H group, and more carbon fibers were observed in the pleural lavage fluid (PLF) of the MWNT-7 groups. These results suggest that malignant mesothelioma is related to the transfer of carbon fibers into the pleural cavity. CONCLUSIONS The intratracheal instillation of MWNT-7 clearly led to carcinogenicity in both male and female rats at all doses. The equivocal evidence for carcinogenic potential that was observed in male rats exposed to VGCF™-H was not seen in the females. The differences in the carcinogenicities of the two types of carbon fibers are thought due to differences in the number of carbon fibers reaching the pleural cavity. The results indicate that the carcinogenic activity of VGCF™-H is lower than that of MWNT-7.
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Affiliation(s)
- Kei Sato
- Chemical Management Department, Resonac Corporation, Tokyo Shiodome Bldg.,1-9-1, Higashi-Shimbashi, Minato-ku, Tokyo, 105-7325, Japan.
| | - Hiroko Fukui
- Chemical Management Department, Resonac Corporation, Tokyo Shiodome Bldg.,1-9-1, Higashi-Shimbashi, Minato-ku, Tokyo, 105-7325, Japan
| | - Yuji Hagiwara
- Chemical Management Department, Resonac Corporation, Tokyo Shiodome Bldg.,1-9-1, Higashi-Shimbashi, Minato-ku, Tokyo, 105-7325, Japan
| | - Ryoji Ogawa
- Chemical Management Department, Resonac Corporation, Tokyo Shiodome Bldg.,1-9-1, Higashi-Shimbashi, Minato-ku, Tokyo, 105-7325, Japan
| | - Ayako Nishioka
- Chemical Management Department, Resonac Corporation, Tokyo Shiodome Bldg.,1-9-1, Higashi-Shimbashi, Minato-ku, Tokyo, 105-7325, Japan
| | - Takamasa Numano
- DIMS Institute of Medical Science, Inc., 64 Goura, Nishiazai, Azai-cho, Ichinomiya-shi, Aichi, 491-0113, Japan
| | - Taiki Sugiyama
- DIMS Institute of Medical Science, Inc., 64 Goura, Nishiazai, Azai-cho, Ichinomiya-shi, Aichi, 491-0113, Japan
| | - Mayumi Kawabe
- DIMS Institute of Medical Science, Inc., 64 Goura, Nishiazai, Azai-cho, Ichinomiya-shi, Aichi, 491-0113, Japan
| | - Yukinori Mera
- DIMS Institute of Medical Science, Inc., 64 Goura, Nishiazai, Azai-cho, Ichinomiya-shi, Aichi, 491-0113, Japan
| | - Tadashi Yoneda
- Chemical Management Department, Resonac Corporation, Tokyo Shiodome Bldg.,1-9-1, Higashi-Shimbashi, Minato-ku, Tokyo, 105-7325, Japan
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Kasai T, Fukushima S. Exposure of Rats to Multi-Walled Carbon Nanotubes: Correlation of Inhalation Exposure to Lung Burden, Bronchoalveolar Lavage Fluid Findings, and Lung Morphology. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2598. [PMID: 37764628 PMCID: PMC10536709 DOI: 10.3390/nano13182598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/14/2023] [Accepted: 09/15/2023] [Indexed: 09/29/2023]
Abstract
To evaluate lung toxicity due to inhalation of multi-walled carbon nanotubes (MWCNTs) in rats, we developed a unique MWCNT aerosol generator based on dry aerosolization using the aerodynamic cyclone principle. Rats were exposed to MWNT-7 (also known as Mutsui-7 and MWCNT-7) aerosolized using this device. We report here an analysis of previously published data and additional unpublished data obtained in 1-day, 2-week, 13-week, and 2-year inhalation exposure studies. In one-day studies, it was found that approximately 50% of the deposited MWNT-7 fibers were cleared the day after the end of exposure, but that clearance of the remaining fibers was markedly reduced. This is in agreement with the premise that the rapidly cleared fibers were deposited in the ciliated airways while the slowly cleared fibers were deposited beyond the ciliated airways in the respiratory zone. Macrophage clearance of MWNT-7 fibers from the alveoli was limited. Instead of macrophage clearance from the alveoli, containment of MWNT-7 fibers within induced granulomatous lesions was observed. The earliest changes indicative of pulmonary toxicity were seen in the bronchoalveolar lavage fluid. Macrophage-associated inflammation persisted from the one-day exposure to MWNT-7 to the end of the two-year exposure period. Correlation of lung tumor development with MWNT-7 lung burden required incorporating the concept of area under the curve for the duration of the study; the development of lung tumors induced by MWNT-7 correlated with lung burden and the duration of MWNT-7 residence in the lung.
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Affiliation(s)
- Tatsuya Kasai
- Japan Bioassay Research Center (JBRC), Japan Organization of Occupational Health and Safety, Hadano 257-0015, Japan
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Berthing T, Lard M, Danielsen PH, Abariute L, Barfod KK, Adolfsson K, Knudsen KB, Wolff H, Prinz CN, Vogel U. Pulmonary toxicity and translocation of gallium phosphide nanowires to secondary organs following pulmonary exposure in mice. J Nanobiotechnology 2023; 21:322. [PMID: 37679803 PMCID: PMC10483739 DOI: 10.1186/s12951-023-02049-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 08/04/2023] [Indexed: 09/09/2023] Open
Abstract
BACKGROUND III-V semiconductor nanowires are envisioned as being integrated in optoelectronic devices in the near future. However, the perspective of mass production of these nanowires raises concern for human safety due to their asbestos- and carbon nanotube-like properties, including their high aspect ratio shape. Indeed, III-V nanowires have similar dimensions as Mitsui-7 multi-walled carbon nanotubes, which induce lung cancer by inhalation in rats. It is therefore urgent to investigate the toxicological effects following lung exposure to III-V nanowires prior to their use in industrial production, which entails risk of human exposure. Here, female C57BL/6J mice were exposed to 2, 6, and 18 µg (0.12, 0.35 and 1.1 mg/kg bw) of gallium phosphide (III-V) nanowires (99 nm diameter, 3.7 μm length) by intratracheal instillation and the toxicity was investigated 1, 3, 28 days and 3 months after exposure. Mitsui-7 multi-walled carbon nanotubes and carbon black Printex 90 nanoparticles were used as benchmark nanomaterials. RESULTS Gallium phosphide nanowires induced genotoxicity in bronchoalveolar lavage cells and acute inflammation with eosinophilia observable both in bronchoalveolar lavage and lung tissue (1 and 3 days post-exposure). The inflammatory response was comparable to the response following exposure to Mitsui-7 multi-walled carbon nanotubes at similar dose levels. The nanowires underwent partial dissolution in the lung resulting in thinner nanowires, with an estimated in vivo half-life of 3 months. Despite the partial dissolution, nanowires were detected in lung, liver, spleen, kidney, uterus and brain 3 months after exposure. CONCLUSION Pulmonary exposure to gallium phosphide nanowires caused similar toxicological effects as the multi-walled carbon nanotube Mitsui-7.
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Affiliation(s)
- Trine Berthing
- The National Research Centre for the Working Environment, Copenhagen, Denmark
| | - Mercy Lard
- Division of Solid State Physics and NanoLund, Lund University, Lund, 22 100, Sweden
| | | | - Laura Abariute
- Division of Solid State Physics and NanoLund, Lund University, Lund, 22 100, Sweden
- Phase Holographic Imaging PHI AB, Lund, 224 78, Sweden
| | - Kenneth K Barfod
- The National Research Centre for the Working Environment, Copenhagen, Denmark
- Department of Food Science, Microbiology and Fermentation, University of Copenhagen, Copenhagen, Denmark
| | - Karl Adolfsson
- Division of Solid State Physics and NanoLund, Lund University, Lund, 22 100, Sweden
- Axis Communications AB, Lund, 223 69, Sweden
| | - Kristina B Knudsen
- The National Research Centre for the Working Environment, Copenhagen, Denmark
| | - Henrik Wolff
- Finnish Institute of Occupational Health, Helsinki, Finland
- Department of Pathology, University of Helsinki, Helsinki, Finland
| | - Christelle N Prinz
- Division of Solid State Physics and NanoLund, Lund University, Lund, 22 100, Sweden.
| | - Ulla Vogel
- The National Research Centre for the Working Environment, Copenhagen, Denmark.
- National Food Institute, Technical University of Denmark, Kgs. Lyngby, Denmark.
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Hojo M, Maeno A, Sakamoto Y, Yamamoto Y, Taquahashi Y, Hirose A, Suzuki J, Inomata A, Nakae D. Time-Course of Transcriptomic Change in the Lungs of F344 Rats Repeatedly Exposed to a Multiwalled Carbon Nanotube in a 2-Year Test. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2105. [PMID: 37513116 PMCID: PMC10383707 DOI: 10.3390/nano13142105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 07/13/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023]
Abstract
Despite intensive toxicological studies of carbon nanotubes (CNTs) over the last two decades, only a few studies have demonstrated their pulmonary carcinogenicities in chronic animal experiments, and the underlying molecular mechanisms are still unclear. To obtain molecular insights into CNT-induced lung carcinogenicity, we performed a transcriptomic analysis using a set of lung tissues collected from rats in a 2-year study, in which lung tumors were induced by repeated intratracheal instillations of a multiwalled carbon nanotube, MWNT-7. The RNA-seq-based transcriptome identified a large number of significantly differentially expressed genes at Year 0.5, Year 1, and Year 2. Ingenuity Pathway Analysis revealed that macrophage-elicited signaling pathways such as phagocytosis, acute phase response, and Toll-like receptor signaling were activated throughout the experimental period. At Year 2, cancer-related pathways including ERBB signaling and some axonal guidance signaling pathways such as EphB4 signaling were perturbed. qRT-PCR and immunohistochemistry indicated that several key molecules such as Osteopontin/Spp1, Hmox1, Mmp12, and ERBB2 were markedly altered and/or localized in the preneoplastic lesions, suggesting their participation in the induction of lung cancer. Our findings support a scenario of inflammation-induced carcinogenesis and contribute to a better understanding of the molecular mechanism of MWCNT carcinogenicity.
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Affiliation(s)
- Motoki Hojo
- Department of Pharmaceutical and Environmental Sciences, Tokyo Metropolitan Institute of Public Health, 3-24-1 Hyakunincho, Shinjuku-ku, Tokyo 169-0073, Japan
| | - Ai Maeno
- Department of Pharmaceutical and Environmental Sciences, Tokyo Metropolitan Institute of Public Health, 3-24-1 Hyakunincho, Shinjuku-ku, Tokyo 169-0073, Japan
| | - Yoshimitsu Sakamoto
- Department of Pharmaceutical and Environmental Sciences, Tokyo Metropolitan Institute of Public Health, 3-24-1 Hyakunincho, Shinjuku-ku, Tokyo 169-0073, Japan
| | - Yukio Yamamoto
- Department of Pharmaceutical and Environmental Sciences, Tokyo Metropolitan Institute of Public Health, 3-24-1 Hyakunincho, Shinjuku-ku, Tokyo 169-0073, Japan
| | - Yuhji Taquahashi
- Division of Cellular and Molecular Toxicology, Center for Biological Safety and Research, National Institute of Health Sciences, 3-25-26 Tono-machi, Kawasaki-ku, Kawasaki 210-9501, Kanagawa, Japan
| | - Akihiko Hirose
- Chemicals Assessment and Research Center, Chemicals Evaluation and Research Institute, Japan, 1-4-25 Koraku, Bunkyo-ku, Tokyo 112-0004, Japan
| | - Jin Suzuki
- Department of Pharmaceutical and Environmental Sciences, Tokyo Metropolitan Institute of Public Health, 3-24-1 Hyakunincho, Shinjuku-ku, Tokyo 169-0073, Japan
| | - Akiko Inomata
- Department of Pharmaceutical and Environmental Sciences, Tokyo Metropolitan Institute of Public Health, 3-24-1 Hyakunincho, Shinjuku-ku, Tokyo 169-0073, Japan
| | - Dai Nakae
- Department of Medical Sports, Faculty of Health Care and Medical Sports, Teikyo Heisei University, 4-1 Uruido-Minami, Ichihara 290-0193, Chiba, Japan
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Barthel H, Sébillaud S, Lorcin M, Wolff H, Viton S, Cosnier F, Gaté L, Seidel C. Needlelike, short and thin multi-walled carbon nanotubes: comparison of effects on wild type and p53 +/- rat lungs. Nanotoxicology 2023; 17:270-288. [PMID: 37126100 DOI: 10.1080/17435390.2023.2204933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Carbon nanotubes (CNTs) are nanomaterials presenting an occupational inhalation risk during production or handling. The International Agency for Research on Cancer classified one CNT, Mitsui-7 (MWNT-7), as 'possibly carcinogenic to humans'. In recognition of their similarities, a proposal has been submitted to the risk assessment committee of ECHA to classify all fibers with 'Fibre Paradigm' (FP)-compatible dimensions as carcinogenic. However, there is a lack of clarity surrounding the toxicity of fibers that do not fit the FP criteria. In this study, we compared the effects of the FP-compatible Mitsui-7, to those of NM-403, a CNT that is too short and thin to fit the paradigm. Female Sprague Dawley rats deficient for p53 (GMO) and wild type (WT) rats were exposed to the two CNTs (0.25 mg/rat/week) by intratracheal instillation. Animals (GMO and WT) were exposed weekly for four consecutive weeks and were sacrificed 3 days or 8 months after the last instillation. Exposure to both CNTs induced acute lung inflammation. However, persistent inflammation at 8 months was only observed in the lungs of rats exposed to NM-403. In addition to the persistent inflammation, NM-403 stimulated hyperplasic changes in rat lungs, and no adenomas or carcinomas were detected. The degree and extent of hyperplasia was significantly more pronounced in GMO rats. These results suggest that CNT not meeting the FP criteria can cause persistent inflammation and hyperplasia. Consequently, their health effects should be carefully assessed.
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Affiliation(s)
- Hélène Barthel
- French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, Vandoeuvre-lès-Nancy, France
- Ingénierie Moléculaire et Physiophatologie Articulaire (IMoPA), Biopôle, Campus Biologie Santé, UMR 7365 CNRS-Université de Lorraine, Vandoeuvre-lès-Nancy, France
| | - Sylvie Sébillaud
- French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, Vandoeuvre-lès-Nancy, France
| | - Mylène Lorcin
- French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, Vandoeuvre-lès-Nancy, France
| | - Henrik Wolff
- Finnish Institute of Occupational Health, Helsinki, Finland
| | - Stéphane Viton
- French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, Vandoeuvre-lès-Nancy, France
| | - Frédéric Cosnier
- French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, Vandoeuvre-lès-Nancy, France
| | - Laurent Gaté
- French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, Vandoeuvre-lès-Nancy, France
| | - Carole Seidel
- French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, Vandoeuvre-lès-Nancy, France
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11
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Bubols GB, Arbo MD, Peruzzi CP, Cestonaro LV, Altknecht LF, Fão N, Göethel G, Nascimento SN, Paese K, Amaral MG, Bergmann CP, Pohlmann AR, Guterres SS, Garcia SC. Characterization and in vivo toxicological evaluation of multi-walled carbon nanotubes: a low-dose repeated intratracheal administration study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:36405-36421. [PMID: 36547826 DOI: 10.1007/s11356-022-24653-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 12/05/2022] [Indexed: 06/17/2023]
Abstract
This study characterized and investigated the toxicity of two multi-walled carbon nanotubes (MWCNT) NM-401 and NM-403 at 60 and 180 µg after four repeated intratracheal instillations; follow-up times were 3, 7, 30, and 90 days after the last instillation. NM-401 was needle-like, long, and thick, while NM-403 was entangled, short, and thin. Both MWCNT types induced transient pulmonary and systemic alterations in renal function and oxidative lipid damage markers in recent times. Animals showed general toxicity in the immediate times after exposures, in addition to increased pulmonary LDH release at day 3. In further times, decreased liver and kidney relative weights were noted at higher MWCNT doses. Lung histological damages included pulmonary fibrosis, for both MWCNT types, similarly to asbestos; single liver and kidney histological alterations were present. Repeated instillations led to persistent pulmonary damage at low doses, and possibly the extrapulmonary effects may be associated with the consecutive exposures.
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Affiliation(s)
- Guilherme Borges Bubols
- Laboratório de Toxicologia (LATOX), Faculdade de Farmácia, Anexo II, Universidade Federal Do Rio Grande Do Sul (UFRGS), Rua São Luis, 150, Anexo II, Santana, Porto Alegre, CEP: 90620-170, Brazil
- Programa de Pós-Graduação Em Ciências Farmacêuticas (PPGCF), Faculdade de Farmácia, Universidade Federal Do Rio Grande Do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Marcelo Dutra Arbo
- Laboratório de Toxicologia (LATOX), Faculdade de Farmácia, Anexo II, Universidade Federal Do Rio Grande Do Sul (UFRGS), Rua São Luis, 150, Anexo II, Santana, Porto Alegre, CEP: 90620-170, Brazil
- Programa de Pós-Graduação Em Ciências Farmacêuticas (PPGCF), Faculdade de Farmácia, Universidade Federal Do Rio Grande Do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Caroline Portela Peruzzi
- Laboratório de Toxicologia (LATOX), Faculdade de Farmácia, Anexo II, Universidade Federal Do Rio Grande Do Sul (UFRGS), Rua São Luis, 150, Anexo II, Santana, Porto Alegre, CEP: 90620-170, Brazil
- Programa de Pós-Graduação Em Ciências Farmacêuticas (PPGCF), Faculdade de Farmácia, Universidade Federal Do Rio Grande Do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Larissa Vivan Cestonaro
- Laboratório de Toxicologia (LATOX), Faculdade de Farmácia, Anexo II, Universidade Federal Do Rio Grande Do Sul (UFRGS), Rua São Luis, 150, Anexo II, Santana, Porto Alegre, CEP: 90620-170, Brazil
- Programa de Pós-Graduação Em Ciências Farmacêuticas (PPGCF), Faculdade de Farmácia, Universidade Federal Do Rio Grande Do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Louise Figueiredo Altknecht
- Laboratório de Toxicologia (LATOX), Faculdade de Farmácia, Anexo II, Universidade Federal Do Rio Grande Do Sul (UFRGS), Rua São Luis, 150, Anexo II, Santana, Porto Alegre, CEP: 90620-170, Brazil
| | - Nuryan Fão
- Laboratório de Toxicologia (LATOX), Faculdade de Farmácia, Anexo II, Universidade Federal Do Rio Grande Do Sul (UFRGS), Rua São Luis, 150, Anexo II, Santana, Porto Alegre, CEP: 90620-170, Brazil
- Programa de Pós-Graduação Em Ciências Farmacêuticas (PPGCF), Faculdade de Farmácia, Universidade Federal Do Rio Grande Do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Gabriela Göethel
- Laboratório de Toxicologia (LATOX), Faculdade de Farmácia, Anexo II, Universidade Federal Do Rio Grande Do Sul (UFRGS), Rua São Luis, 150, Anexo II, Santana, Porto Alegre, CEP: 90620-170, Brazil
- Programa de Pós-Graduação Em Ciências Farmacêuticas (PPGCF), Faculdade de Farmácia, Universidade Federal Do Rio Grande Do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Sabrina Nunes Nascimento
- Laboratório de Toxicologia (LATOX), Faculdade de Farmácia, Anexo II, Universidade Federal Do Rio Grande Do Sul (UFRGS), Rua São Luis, 150, Anexo II, Santana, Porto Alegre, CEP: 90620-170, Brazil
- Programa de Pós-Graduação Em Ciências Farmacêuticas (PPGCF), Faculdade de Farmácia, Universidade Federal Do Rio Grande Do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Karina Paese
- Programa de Pós-Graduação Em Ciências Farmacêuticas (PPGCF), Faculdade de Farmácia, Universidade Federal Do Rio Grande Do Sul (UFRGS), Porto Alegre, RS, Brazil
- Laboratório 405 de Nanotecnologia, Faculdade de Farmácia, Universidade Federal Do Rio Grande Do Sul (UFRGS), Porto Alegre, Brazil
| | - Marta Gonçalves Amaral
- Centro de Desenvolvimento Tecnológico (CDTec), Universidade Federal de Pelotas (UFPel), Pelotas, RS, Brazil
| | - Carlos Pérez Bergmann
- Laboratório de Materiais Cerâmicos (LACER), Universidade Federal Do Rio Grande Do Sul (UFRGS), Porto Alegre, Brazil
| | - Adriana Raffin Pohlmann
- Programa de Pós-Graduação Em Ciências Farmacêuticas (PPGCF), Faculdade de Farmácia, Universidade Federal Do Rio Grande Do Sul (UFRGS), Porto Alegre, RS, Brazil
- Instituto de Química, Universidade Federal Do Rio Grande Do Sul (UFRGS), Porto Alegre, Brazil
| | - Silvia Stanisçuaski Guterres
- Programa de Pós-Graduação Em Ciências Farmacêuticas (PPGCF), Faculdade de Farmácia, Universidade Federal Do Rio Grande Do Sul (UFRGS), Porto Alegre, RS, Brazil
- Laboratório 405 de Nanotecnologia, Faculdade de Farmácia, Universidade Federal Do Rio Grande Do Sul (UFRGS), Porto Alegre, Brazil
| | - Solange Cristina Garcia
- Laboratório de Toxicologia (LATOX), Faculdade de Farmácia, Anexo II, Universidade Federal Do Rio Grande Do Sul (UFRGS), Rua São Luis, 150, Anexo II, Santana, Porto Alegre, CEP: 90620-170, Brazil.
- Programa de Pós-Graduação Em Ciências Farmacêuticas (PPGCF), Faculdade de Farmácia, Universidade Federal Do Rio Grande Do Sul (UFRGS), Porto Alegre, RS, Brazil.
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12
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Shimizu M, Hojo M, Ikushima K, Yamamoto Y, Maeno A, Sakamoto Y, Ishimaru N, Taquahashi Y, Kanno J, Hirose A, Suzuki J, Inomata A, Nakae D. Continuous infiltration of small peritoneal macrophages in the mouse peritoneum through CCR2-dependent and -independent routes during fibrosis and mesothelioma development induced by a multiwalled carbon nanotube, MWNT-7. J Toxicol Sci 2023; 48:617-639. [PMID: 38044124 DOI: 10.2131/jts.48.617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Abstract
Although toxicities of multiwalled carbon nanotube (MWCNT) have been found to be related with activities of macrophages phagocytosing the fibers, the exact relationship between macrophage population and pathogenesis of fibrosis and mesotheliomas induced by MWCNTs is largely unknown. CCL2-CCR2 axis, a major monocyte/macrophage infiltration route, is thought to be involved in not only acute inflammation but also the formation of tumor microenvironment. We therefore described a time-course of alteration of macrophage population in an attempt to clarify the contribution of the Ccr2 gene to mesotheliomagenesis. Wild-type (WT) C57BL/6 mice and Ccr2-knockout (KO) mice were intraperitoneally administered with MWNT-7 and were sequentially necropsied at 1, 7, 28, 90, and 245 day(s) after the injection. Peritoneal fibrosis was prominent in all MWCNT-treated mice, with a lower severity in the KO mice. No differences were observed in the incidences of neoplastic lesions of mesothelia between WT and KO mice. A flow cytometric analysis revealed that after gross disappearance of macrophages after MWCNT exposure, small peritoneal macrophages (SPMs) were exclusively refurbished by the CCR2-dependent route at day 1 (as Ly-6C+MHC class II- cells), followed by additional CCR2-independent routes (as Ly-6C-MHC class II- cells); i.e., the only route in KO mice; with a delay of 1-7 days. The SPMs derived from both routes appeared to differentiate into maturated cells as Ly-6C-MHC class II+, whose ratio increased in a time-dependent manner among the total SPM population. Additionally, most macrophages expressed M1-like features, but a small fraction of macrophages exhibited an M1/M2 mixed status in MWCNT-treated animals. Our findings demonstrate a long-persistent activation of the CCL2-CCR2 axis after MWCNT exposure and enable a better understanding of the participation and potential roles of SPMs in fibrous material-induced chronic toxicities.
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Affiliation(s)
- Motomu Shimizu
- Department of Pharmaceutical and Environmental Sciences, Tokyo Metropolitan Institute of Public Health
| | - Motoki Hojo
- Department of Pharmaceutical and Environmental Sciences, Tokyo Metropolitan Institute of Public Health
| | - Kiyomi Ikushima
- Department of Pharmaceutical and Environmental Sciences, Tokyo Metropolitan Institute of Public Health
| | - Yukio Yamamoto
- Department of Pharmaceutical and Environmental Sciences, Tokyo Metropolitan Institute of Public Health
| | - Ai Maeno
- Department of Pharmaceutical and Environmental Sciences, Tokyo Metropolitan Institute of Public Health
| | - Yoshimitsu Sakamoto
- Department of Pharmaceutical and Environmental Sciences, Tokyo Metropolitan Institute of Public Health
| | - Naozumi Ishimaru
- Department of Oral Molecular Pathology, Tokushima University Graduate School of Biomedical Sciences
| | - Yuhji Taquahashi
- Division of Cellular and Molecular Toxicology, Center for Biological Safety and Research, National Institute of Health Sciences
| | - Jun Kanno
- Division of Cellular and Molecular Toxicology, Center for Biological Safety and Research, National Institute of Health Sciences
| | - Akihiko Hirose
- Chemicals Assessment and Research Center, Chemicals Evaluation and Research Institute, Japan
| | - Jin Suzuki
- Department of Pharmaceutical and Environmental Sciences, Tokyo Metropolitan Institute of Public Health
| | - Akiko Inomata
- Department of Pharmaceutical and Environmental Sciences, Tokyo Metropolitan Institute of Public Health
| | - Dai Nakae
- Department of Medical Sports, Faculty of Health Care and Medical Sports, Teikyo Heisei University
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13
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Assessment of Pristine Carbon Nanotubes Toxicity in Rodent Models. Int J Mol Sci 2022; 23:ijms232315343. [PMID: 36499665 PMCID: PMC9739793 DOI: 10.3390/ijms232315343] [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: 10/17/2022] [Revised: 11/24/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022] Open
Abstract
Carbon nanotubes are increasingly used in nanomedicine and material chemistry research, mostly because of their small size over a large surface area. Due to their properties, they are very attractive candidates for use in medicine and as drug carriers, contrast agents, biological platforms, and so forth. Carbon nanotubes (CNTs) may affect many organs, directly or indirectly, so there is a need for toxic effects evaluation. The main mechanisms of toxicity include oxidative stress, inflammation, the ability to damage DNA and cell membrane, as well as necrosis and apoptosis. The research concerning CNTs focuses on different animal models, functionalization, ways of administration, concentrations, times of exposure, and a variety of properties, which have a significant effect on toxicity. The impact of pristine CNTs on toxicity in rodent models is being increasingly studied. However, it is immensely difficult to compare obtained results since there are no standardized tests. This review summarizes the toxicity issues of pristine CNTs in rodent models, as they are often the preferred model for human disease studies, in different organ systems, while considering the various factors that affect them. Regardless, the results showed that the majority of toxicological studies using rodent models revealed some toxic effects. Even with different properties, carbon nanotubes were able to generate inflammation, fibrosis, or biochemical changes in different organs. The problem is that there are only a small amount of long-term toxicity studies, which makes it impossible to obtain a good understanding of later effects. This article will give a greater overview of the situation on toxicity in many organs. It will allow researchers to look at the toxicity of carbon nanotubes in a broader context and help to identify studies that are missing to properly assess toxicity.
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14
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de Luna LAV, Loret T, Fordham A, Arshad A, Drummond M, Dodd A, Lozano N, Kostarelos K, Bussy C. Lung recovery from DNA damage induced by graphene oxide is dependent on size, dose and inflammation profile. Part Fibre Toxicol 2022; 19:62. [PMID: 36131347 PMCID: PMC9490925 DOI: 10.1186/s12989-022-00502-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 09/06/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND A key aspect of any new material safety assessment is the evaluation of their in vivo genotoxicity. Graphene oxide (GO) has been studied for many promising applications, but there are remaining concerns about its safety profile, especially after inhalation. Herein we tested whether GO lateral dimension, comparing micrometric (LGO) and nanometric (USGO) GO sheets, has a role in the formation of DNA double strand breaks in mouse lungs. We used spatial resolution and differential cell type analysis to measure DNA damages in both epithelial and immune cells, after either single or repeated exposure. RESULTS GO induced DNA damages were size and dose dependent, in both exposure scenario. After single exposure to a high dose, both USGO and LGO induced significant DNA damage in the lung parenchyma, but only during the acute phase response (p < 0.05 for USGO; p < 0.01 for LGO). This was followed by a fast lung recovery at day 7 and 28 for both GOs. When evaluating the chronic impact of GO after repeated exposure, only a high dose of LGO induced long-term DNA damages in lung alveolar epithelia (at 84 days, p < 0.05). Regardless of size, low dose GO did not induce any significant DNA damage after repeated exposure. A multiparametric correlation analysis of our repeated exposure data revealed that transient or persistent inflammation and oxidative stress were associated to either recovery or persistent DNA damages. For USGO, recovery from DNA damage was correlated to efficient recovery from acute inflammation (i.e., significant secretion of SAA3, p < 0.001; infiltration of neutrophils, p < 0.01). In contrast, the persistence of LGO in lungs was associated to a long-lasting presence of multinucleated macrophages (up to 84 days, p < 0.05), an underlying inflammation (IL-1α secretion up to 28 days, p < 0.05) and the presence of persistent DNA damages at 84 days. CONCLUSIONS Overall these results highlight the importance of the exposure scenario used. We showed that LGO was more genotoxic after repeated exposure than single exposure due to persistent lung inflammation. These findings are important in the context of human health risk assessment and toward establishing recommendations for a safe use of graphene based materials in the workplace.
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Affiliation(s)
- Luis Augusto Visani de Luna
- Nanomedicine Lab 2.0, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, M13 9PT, UK.,National Graphene Institute, The University of Manchester, Manchester, M13 9PL, UK.,Lydia Becker Institute of Immunology and Inflammation, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, M13 9PT, UK
| | - Thomas Loret
- Nanomedicine Lab 2.0, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, M13 9PT, UK.,National Graphene Institute, The University of Manchester, Manchester, M13 9PL, UK.,Lydia Becker Institute of Immunology and Inflammation, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, M13 9PT, UK
| | - Alexander Fordham
- Nanomedicine Lab 2.0, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, M13 9PT, UK.,National Graphene Institute, The University of Manchester, Manchester, M13 9PL, UK.,Lydia Becker Institute of Immunology and Inflammation, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, M13 9PT, UK
| | - Atta Arshad
- Nanomedicine Lab 2.0, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, M13 9PT, UK.,National Graphene Institute, The University of Manchester, Manchester, M13 9PL, UK.,Lydia Becker Institute of Immunology and Inflammation, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, M13 9PT, UK
| | - Matthew Drummond
- Nanomedicine Lab 2.0, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, M13 9PT, UK.,National Graphene Institute, The University of Manchester, Manchester, M13 9PL, UK
| | - Abbie Dodd
- Nanomedicine Lab 2.0, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, M13 9PT, UK.,National Graphene Institute, The University of Manchester, Manchester, M13 9PL, UK
| | - Neus Lozano
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193, Barcelona, Spain
| | - Kostas Kostarelos
- Nanomedicine Lab 2.0, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, M13 9PT, UK.,National Graphene Institute, The University of Manchester, Manchester, M13 9PL, UK.,Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193, Barcelona, Spain
| | - Cyrill Bussy
- Nanomedicine Lab 2.0, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, M13 9PT, UK. .,National Graphene Institute, The University of Manchester, Manchester, M13 9PL, UK. .,Lydia Becker Institute of Immunology and Inflammation, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, M13 9PT, UK.
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