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Tang M, Xia W, Song F, Liu C, Wang X, Zhou H, Mai K, He G. Loss of Gcn2 exacerbates gossypol induced oxidative stress, apoptosis and inflammation in zebrafish. FISH & SHELLFISH IMMUNOLOGY 2024; 151:109727. [PMID: 38936520 DOI: 10.1016/j.fsi.2024.109727] [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: 03/27/2024] [Revised: 06/22/2024] [Accepted: 06/24/2024] [Indexed: 06/29/2024]
Abstract
Gossypol, a naturally occurring compound found in cottonseed meal, shows promising therapeutic potential for human diseases. However, within the aquaculture industry, it is considered an antinutritional factor. The incorporation of cottonseed meal into fish feed introduces gossypol, which induces intracellular stresses and hinders overall health of farmed fish. The aim of this study is to determine the role of General control nonderepressible 2 (gcn2), a sensor for intracellular stresses in gossypol-induced stress responses in fish. In the present study, we established two gcn2 knockout zebrafish lines. A feeding trial was conducted to assess the growth-inhibitory effect of gossypol in both wild type and gcn2 knockout zebrafish. The results showed that in the absence of gcn2, zebrafish exhibited increased oxidative stress and apoptosis when exposed to gossypol, resulting in higher mortality rates. In feeding trial, dietary gossypol intensified liver inflammation in gcn2-/- zebrafish, diminishing their growth and feed conversion. Remarkably, administering the antioxidant N-acetylcysteine (NAC) was effective in reversing the gossypol induced oxidative stress and apoptosis, thereby increasing the gossypol tolerance of gcn2-/- zebrafish. Exposure to gossypol induces more severe mitochondrial stress in gcn2-/- zebrafish, thereby inducing metabolic disorders. These results reveal that gcn2 plays a protective role in reducing gossypol-induced oxidative stress and apoptosis, attenuating inflammation responses, and enhancing the survivability of zebrafish in gossypol-challenged conditions. Therefore, maintaining appropriate activation of Gcn2 may be beneficial for fish fed diets containing gossypol.
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Affiliation(s)
- Mingjun Tang
- Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266003, China
| | - Weiyi Xia
- Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266003, China
| | - Fei Song
- School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Chengdong Liu
- Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266003, China.
| | - Xuan Wang
- Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266003, China
| | - Huihui Zhou
- Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266003, China
| | - Kangsen Mai
- Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266003, China
| | - Gen He
- Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266003, China; Key Laboratory of Aquaculture Nutrition and Feeds, Ministry of Agriculture, Ocean University of China, Qingdao, 266003, China
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King DE, Sparling AC, Joyce AS, Ryde IT, DeSouza B, Ferguson PL, Murphy SK, Meyer JN. Lack of detectable sex differences in the mitochondrial function of Caenorhabditis elegans. BMC Ecol Evol 2024; 24:55. [PMID: 38664688 PMCID: PMC11046947 DOI: 10.1186/s12862-024-02238-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: 03/05/2023] [Accepted: 04/09/2024] [Indexed: 04/28/2024] Open
Abstract
BACKGROUND Sex differences in mitochondrial function have been reported in multiple tissue and cell types. Additionally, sex-variable responses to stressors including environmental pollutants and drugs that cause mitochondrial toxicity have been observed. The mechanisms that establish these differences are thought to include hormonal modulation, epigenetic regulation, double dosing of X-linked genes, and the maternal inheritance of mtDNA. Understanding the drivers of sex differences in mitochondrial function and being able to model them in vitro is important for identifying toxic compounds with sex-variable effects. Additionally, understanding how sex differences in mitochondrial function compare across species may permit insight into the drivers of these differences, which is important for basic biology research. This study explored whether Caenorhabditis elegans, a model organism commonly used to study stress biology and toxicology, exhibits sex differences in mitochondrial function and toxicant susceptibility. To assess sex differences in mitochondrial function, we utilized four male enriched populations (N2 wild-type male enriched, fog-2(q71), him-5(e1490), and him-8(e1498)). We performed whole worm respirometry and determined whole worm ATP levels and mtDNA copy number. To probe whether sex differences manifest only after stress and inform the growing use of C. elegans as a mitochondrial health and toxicologic model, we also assessed susceptibility to a classic mitochondrial toxicant, rotenone. RESULTS We detected few to no large differences in mitochondrial function between C. elegans sexes. Though we saw no sex differences in vulnerability to rotenone, we did observe sex differences in the uptake of this lipophilic compound, which may be of interest to those utilizing C. elegans as a model organism for toxicologic studies. Additionally, we observed altered non-mitochondrial respiration in two him strains, which may be of interest to other researchers utilizing these strains. CONCLUSIONS Basal mitochondrial parameters in male and hermaphrodite C. elegans are similar, at least at the whole-organism level, as is toxicity associated with a mitochondrial Complex I inhibitor, rotenone. Our data highlights the limitation of using C. elegans as a model to study sex-variable mitochondrial function and toxicological responses.
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Affiliation(s)
- Dillon E King
- Nicholas School of Environment, Duke University, 308 Research Drive, A304, Durham, NC, 27708, USA
- Department of Obstetrics and Gynecology, Duke University Medical Center, Durham, NC, USA
| | - A Clare Sparling
- Nicholas School of Environment, Duke University, 308 Research Drive, A304, Durham, NC, 27708, USA
| | - Abigail S Joyce
- Pratt School of Engineering, Duke University, Durham, NC, USA
| | - Ian T Ryde
- Nicholas School of Environment, Duke University, 308 Research Drive, A304, Durham, NC, 27708, USA
| | - Beverly DeSouza
- Department of Pharmacology and Cancer Biology, Duke University, Durham, NC, USA
| | - P Lee Ferguson
- Pratt School of Engineering, Duke University, Durham, NC, USA
| | - Susan K Murphy
- Nicholas School of Environment, Duke University, 308 Research Drive, A304, Durham, NC, 27708, USA
- Department of Obstetrics and Gynecology, Duke University Medical Center, Durham, NC, USA
| | - Joel N Meyer
- Nicholas School of Environment, Duke University, 308 Research Drive, A304, Durham, NC, 27708, USA.
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Zhang Y, Li H, Wang Y, Nie M, Zhang K, Pan J, Zhang Y, Ye Z, Zufall RA, Lynch M, Long H. Mitogenomic architecture and evolution of the soil ciliates Colpoda. mSystems 2024; 9:e0116123. [PMID: 38259100 PMCID: PMC10878089 DOI: 10.1128/msystems.01161-23] [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: 11/01/2023] [Accepted: 12/14/2023] [Indexed: 01/24/2024] Open
Abstract
Colpoda are cosmopolitan unicellular eukaryotes primarily inhabiting soil and benefiting plant growth, but they remain one of the least understood taxa in genetics and genomics within the realm of ciliated protozoa. Here, we investigate the architecture of de novo assembled mitogenomes of six Colpoda species, using long-read sequencing and involving 36 newly isolated natural strains in total. The mitogenome sizes span from 43 to 63 kbp and typically contain 28-33 protein-coding genes. They possess a linear structure with variable telomeres and central repeats, with one Colpoda elliotti strain isolated from Tibet harboring the longest telomeres among all studied ciliates. Phylogenomic analyses reveal that Colpoda species started to diverge more than 326 million years ago, eventually evolving into two distinct groups. Collinearity analyses also reveal significant genomic divergences and a lack of long collinear blocks. One of the most notable features is the exceptionally high level of gene rearrangements between mitochondrial genomes of different Colpoda species, dominated by gene loss events. Population-level mitogenomic analysis on natural strains also demonstrates high sequence divergence, regardless of geographic distance, but the gene order remains highly conserved within species, offering a new species identification criterion for Colpoda species. Furthermore, we identified underlying heteroplasmic sites in the majority of strains of three Colpoda species, albeit without a discernible recombination signal to account for this heteroplasmy. This comprehensive study systematically unveils the mitogenomic structure and evolution of these ancient and ecologically significant Colpoda ciliates, thus laying the groundwork for a deeper understanding of the evolution of unicellular eukaryotes.IMPORTANCEColpoda, one of the most widespread ciliated protozoa in soil, are poorly understood in regard to their genetics and evolution. Our research revealed extreme mitochondrial gene rearrangements dominated by gene loss events, potentially leading to the streamlining of Colpoda mitogenomes. Surprisingly, while interspecific rearrangements abound, our population-level mitogenomic study revealed a conserved gene order within species, offering a potential new identification criterion. Phylogenomic analysis traced their lineage over 326 million years, revealing two distinct groups. Substantial genomic divergence might be associated with the lack of extended collinear blocks and relaxed purifying selection. This study systematically reveals Colpoda ciliate mitogenome structures and evolution, providing insights into the survival and evolution of these vital soil microorganisms.
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Affiliation(s)
- Yuanyuan Zhang
- Key Laboratory of Evolution and Marine Biodiversity (Ministry of Education), Institute of Evolution and Marine Biodiversity, KLMME, Ocean University of China, Qingdao, Shandong Province, China
- Laboratory for Marine Biology and Biotechnology, Laoshan Laboratory, Qingdao, Shandong Province, China
| | - Haichao Li
- Key Laboratory of Evolution and Marine Biodiversity (Ministry of Education), Institute of Evolution and Marine Biodiversity, KLMME, Ocean University of China, Qingdao, Shandong Province, China
| | - Yaohai Wang
- Key Laboratory of Evolution and Marine Biodiversity (Ministry of Education), Institute of Evolution and Marine Biodiversity, KLMME, Ocean University of China, Qingdao, Shandong Province, China
| | - Mu Nie
- Key Laboratory of Evolution and Marine Biodiversity (Ministry of Education), Institute of Evolution and Marine Biodiversity, KLMME, Ocean University of China, Qingdao, Shandong Province, China
| | - Kexin Zhang
- Key Laboratory of Evolution and Marine Biodiversity (Ministry of Education), Institute of Evolution and Marine Biodiversity, KLMME, Ocean University of China, Qingdao, Shandong Province, China
| | - Jiao Pan
- Key Laboratory of Evolution and Marine Biodiversity (Ministry of Education), Institute of Evolution and Marine Biodiversity, KLMME, Ocean University of China, Qingdao, Shandong Province, China
| | - Yu Zhang
- Key Laboratory of Evolution and Marine Biodiversity (Ministry of Education), Institute of Evolution and Marine Biodiversity, KLMME, Ocean University of China, Qingdao, Shandong Province, China
- School of Mathematics Science, Ocean University of China, Qingdao, Shandong Province, China
| | - Zhiqiang Ye
- School of Life Sciences, Central China Normal University, Wuhan, Hubei Province, China
| | - Rebecca A. Zufall
- Department of Biology and Biochemistry, University of Houston, Houston, Texas, USA
| | - Michael Lynch
- Biodesign Center for Mechanisms of Evolution, Arizona State University, Tempe, Arizona, USA
| | - Hongan Long
- Key Laboratory of Evolution and Marine Biodiversity (Ministry of Education), Institute of Evolution and Marine Biodiversity, KLMME, Ocean University of China, Qingdao, Shandong Province, China
- Laboratory for Marine Biology and Biotechnology, Laoshan Laboratory, Qingdao, Shandong Province, China
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Zhao T, Zheng H, Xu JJ, Pantopoulos K, Xu YC, Liu LL, Lei XJ, Kotzamanis YP, Luo Z. MnO 2 nanoparticles trigger hepatic lipotoxicity and mitophagy via mtROS-dependent Hsf1 Ser326 phosphorylation. Free Radic Biol Med 2024; 210:390-405. [PMID: 38048852 DOI: 10.1016/j.freeradbiomed.2023.11.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 11/21/2023] [Accepted: 11/29/2023] [Indexed: 12/06/2023]
Abstract
Manganese (Mn) is an essential element for maintaining normal metabolism in vertebrates. Mn dioxide nanoparticles (MnO2 NPs), a novel Mn source, have shown great potentials in biological and biomedical applications due to their distinct physical and chemical properties. However, little is known about potential adverse effects on animal or cellular metabolism. Here, we investigated whether and how dietary MnO2 NPs affect hepatic lipid metabolism in vertebrates. We found that, excessive MnO2 NPs intake increased hepatic and mitochondrial Mn content, promoted hepatic lipotoxic disease and lipogenesis, and inhibited hepatic lipolysis and fatty acid β-oxidation. Moreover, excessive MnO2 NPs intake induced hepatic mitochondrial oxidative stress, damaged mitochondrial function, disrupted mitochondrial dynamics and activated mitophagy. Importantly, we uncovered that mtROS-activated phosphorylation of heat shock factor 1 (Hsf1) at Ser326 residue mediated MnO2 NPs-induced hepatic lipotoxic disease and mitophagy. Mechanistically, MnO2 NPs-induced lipotoxicity and mitophagy were via mtROS-induced phosphorylation and nucleus translocation of Hsf1 and its DNA binding capacity to plin2/dgat1 and bnip3 promoters, respectively. Overall, our findings uncover novel mechanisms by which mtROS-mediated mitochondrial dysfunction and phosphorylation of Hsf1S326 contribute to MnO2 NPs-induced hepatic lipotoxicity and mitophagy, which provide new insights into the effects of metal oxides nanoparticles on hepatotoxicity in vertebrates.
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Affiliation(s)
- Tao Zhao
- Hubei Hongshan Laboratory, Fishery College, Huazhong Agricultural University, Wuhan, 430070, China
| | - Hua Zheng
- Hubei Hongshan Laboratory, Fishery College, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jie-Jie Xu
- Hubei Hongshan Laboratory, Fishery College, Huazhong Agricultural University, Wuhan, 430070, China
| | - Kostas Pantopoulos
- Lady Davis Institute for Medical Research and Department of Medicine, McGill University, Montreal, Quebec, H3T 1E2, Canada
| | - Yi-Chuang Xu
- Hubei Hongshan Laboratory, Fishery College, Huazhong Agricultural University, Wuhan, 430070, China
| | - Lu-Lu Liu
- Hubei Hongshan Laboratory, Fishery College, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xi-Jun Lei
- Hubei Hongshan Laboratory, Fishery College, Huazhong Agricultural University, Wuhan, 430070, China
| | - Yannis P Kotzamanis
- Institute of Marine Biology, Biotechnology and Aquaculture, Hellenic Centre for Marine Research, Agios Kosmas, Hellenikon, 16777, Athens, Greece
| | - Zhi Luo
- Hubei Hongshan Laboratory, Fishery College, Huazhong Agricultural University, Wuhan, 430070, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, China.
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5
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Meyer JN, Pan WK, Ryde IT, Alexander T, Klein-Adams JC, Ndirangu DS, Falvo MJ. Bioenergetic function is decreased in peripheral blood mononuclear cells of veterans with Gulf War Illness. PLoS One 2023; 18:e0287412. [PMID: 37910447 PMCID: PMC10619881 DOI: 10.1371/journal.pone.0287412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 09/26/2023] [Indexed: 11/03/2023] Open
Abstract
Gulf War Illness (GWI) is a major health problem for approximately 250,000 Gulf War (GW) veterans, but the etiology of GWI is unclear. We hypothesized that mitochondrial dysfunction is an important contributor to GWI, based on the similarity of some GWI symptoms to those occurring in some mitochondrial diseases; the plausibility that certain pollutants to which GW veterans were exposed affect mitochondria; mitochondrial effects observed in studies in laboratory models of GWI; and previous evidence of mitochondrial outcomes in studies in GW veterans. A primary role of mitochondria is generation of energy via oxidative phosphorylation. However, direct assessment of mitochondrial respiration, reflecting oxidative phosphorylation, has not been carried out in veterans with GWI. In this case-control observational study, we tested multiple measures of mitochondrial function and integrity in a cohort of 114 GW veterans, 80 with and 34 without GWI as assessed by the Kansas definition. In circulating white blood cells, we analyzed multiple measures of mitochondrial respiration and extracellular acidification, a proxy for non-aerobic energy generation; mitochondrial DNA (mtDNA) copy number; mtDNA damage; and nuclear DNA damage. We also collected detailed survey data on demographics; deployment; self-reported exposure to pesticides, pyridostigmine bromide, and chemical and biological warfare agents; and current biometrics, health and activity levels. We observed a 9% increase in mtDNA content in blood in veterans with GWI, but did not detect differences in DNA damage. Basal and ATP-linked oxygen consumption were respectively 42% and 47% higher in veterans without GWI, after adjustment for mtDNA amount. We did not find evidence for a compensatory increase in anaerobic energy generation: extracellular acidification was also lower in GWI (12% lower at baseline). A subset of 27 and 26 veterans returned for second and third visits, allowing us to measure stability of mitochondrial parameters over time. mtDNA CN, mtDNA damage, ATP-linked OCR, and spare respiratory capacity were moderately replicable over time, with intraclass correlation coefficients of 0.43, 0.44, 0.50, and 0.57, respectively. Other measures showed higher visit-to-visit variability. Many measurements showed lower replicability over time among veterans with GWI compared to veterans without GWI. Finally, we found a strong association between recalled exposure to pesticides, pyridostigmine bromide, and chemical and biological warfare agents and GWI (p < 0.01, p < 0.01, and p < 0.0001, respectively). Our results demonstrate decreased mitochondrial respiratory function as well as decreased glycolytic activity, both of which are consistent with decreased energy availability, in peripheral blood mononuclear cells in veterans with GWI.
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Affiliation(s)
- Joel N. Meyer
- Nicholas School of the Environment, Duke University, Durham, NC, United States of America
| | - William K. Pan
- Nicholas School of the Environment, Duke University, Durham, NC, United States of America
| | - Ian T. Ryde
- Nicholas School of the Environment, Duke University, Durham, NC, United States of America
| | - Thomas Alexander
- Department of Veterans Affairs, War Related Illness and Injury Study Center, East Orange, NJ, United States of America
| | - Jacquelyn C. Klein-Adams
- Department of Veterans Affairs, War Related Illness and Injury Study Center, East Orange, NJ, United States of America
| | - Duncan S. Ndirangu
- Department of Veterans Affairs, War Related Illness and Injury Study Center, East Orange, NJ, United States of America
| | - Michael J. Falvo
- Department of Veterans Affairs, War Related Illness and Injury Study Center, East Orange, NJ, United States of America
- New Jersey Medical School, Rutgers Biomedical and Health Sciences, Newark, NJ, United States of America
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Zhang Q, Song Q, Liu S, Xu Y, Gao D, Lu P, Liu Y, Zhao G, Wu L, Zhao C, Yang J. Integrated transcriptomic and metabolomic analysis reveals the metabolic programming of GM-CSF- and M-CSF- differentiated mouse macrophages. Front Immunol 2023; 14:1230772. [PMID: 37818352 PMCID: PMC10560851 DOI: 10.3389/fimmu.2023.1230772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 09/11/2023] [Indexed: 10/12/2023] Open
Abstract
Macrophages play a critical role in the inflammatory response and tumor development. Macrophages are primarily divided into pro-inflammatory M1-like and anti-inflammatory M2-like macrophages based on their activation status and functions. In vitro macrophage models could be derived from mouse bone marrow cells stimulated with two types of differentiation factors: GM-CSF (GM-BMDMs) and M-CSF (M-BMDMs), to represent M1- and M2-like macrophages, respectively. Since macrophage differentiation requires coordinated metabolic reprogramming and transcriptional rewiring in order to fulfill their distinct roles, we combined both transcriptome and metabolome analysis, coupled with experimental validation, to gain insight into the metabolic status of GM- and M-BMDMs. The data revealed higher levels of the tricarboxylic acid cycle (TCA cycle), oxidative phosphorylation (OXPHOS), fatty acid oxidation (FAO), and urea and ornithine production from arginine in GM-BMDMs, and a preference for glycolysis, fatty acid storage, bile acid metabolism, and citrulline and nitric oxide (NO) production from arginine in M-BMDMs. Correlation analysis with the proteomic data showed high consistency in the mRNA and protein levels of metabolic genes. Similar results were also obtained when compared to RNA-seq data of human monocyte derived macrophages from the GEO database. Furthermore, canonical macrophage functions such as inflammatory response and phagocytosis were tightly associated with the representative metabolic pathways. In the current study, we identified the core metabolites, metabolic genes, and functional terms of the two distinct mouse macrophage populations. We also distinguished the metabolic influences of the differentiation factors GM-CSF and M-CSF, and wish to provide valuable information for in vitro macrophage studies.
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Affiliation(s)
- Qianyue Zhang
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Qiaoling Song
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
- Innovation Platform of Marine Drug Screening and Evaluation, Qingdao Marine Science and Technology Center, Qingdao, China
| | - Shan Liu
- Innovation Platform of Marine Drug Screening and Evaluation, Qingdao Marine Science and Technology Center, Qingdao, China
| | - Yuting Xu
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Danling Gao
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Peizhe Lu
- Department of Neuroscience, University of Michigan, Ann Arbor, MI, United States
| | - Yuantao Liu
- Department of Endocrinology, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao, China
| | - Guanghui Zhao
- Medical Laboratory Center, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao, China
- Oncology Laboratory, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao, China
| | - Lihong Wu
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Chenyang Zhao
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Jinbo Yang
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
- Innovation Platform of Marine Drug Screening and Evaluation, Qingdao Marine Science and Technology Center, Qingdao, China
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Xu J, Du P, Liu X, Xu X, Ge Y, Zhang C. Curcumin supplementation increases longevity and antioxidant capacity in Caenorhabditis elegans. Front Pharmacol 2023; 14:1195490. [PMID: 37346299 PMCID: PMC10279890 DOI: 10.3389/fphar.2023.1195490] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 05/24/2023] [Indexed: 06/23/2023] Open
Abstract
Curcumin is well known as a potent antioxidant and free radical scavenger and has great potential for anti-aging applications. In this study, we investigate the molecular mechanism of curcumin in prolonging the lifespan of C. elegans. Four concentrations of curcumin (10, 25, 50, and 100 µM) were administered, and the optimal treatment concentration was determined by analyzing the nematode lifespan, physiology, and biochemistry. Additionally, RNA-seq and qRT-PCR were performed to explore the antioxidant effect of curcumin and its underlying mechanism. Results revealed that curcumin could significantly improve the survival capacity of C. elegans without influencing its growth. Curcumin was observed to significantly decrease the levels of reactive oxygen species (ROS) under extreme conditions such as heat stress and paraquat stress. In addition, curcumin increased the amount of nematode mitochondrial DNA (mtDNA) replication. RNA-seq results revealed that the underlying mechanism of curcumin in C. elegans is related to the mitogen-activated protein kinase (MAPK) pathway. qRT-PCR results confirmed that the expression of oxidative stress-related genes (sod-1, sod-2, sod-3, gst-4) was increased, and the expression of MAPK signaling pathway-related genes (sek-1, pmk-1, nsy-1) was significantly downregulated. Furthermore, the administration of curcumin extended the lifespan of nematodes, potentially through the enhancement of oxidative stress resistance and the downregulation of the MAPK signaling pathway. These findings improve our understanding of both lifespan extension and the potential mechanism of curcumin in C. elegans.
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Murashov AK, Pak ES, Mar J, O’Brien K, Fisher-Wellman K, Bhat KM. Paternal Western diet causes transgenerational increase in food consumption in Drosophila with parallel alterations in the offspring brain proteome and microRNAs. FASEB J 2023; 37:e22966. [PMID: 37227156 PMCID: PMC10234493 DOI: 10.1096/fj.202300239rr] [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: 02/09/2023] [Revised: 04/20/2023] [Accepted: 04/26/2023] [Indexed: 05/26/2023]
Abstract
Several lines of evidence indicate that ancestral diet might play an important role in determining offspring's metabolic traits. However, it is not yet clear whether ancestral diet can affect offspring's food choices and feeding behavior. In the current study, taking advantage of Drosophila model system, we demonstrate that paternal Western diet (WD) increases offspring food consumption up to the fourth generation. Paternal WD also induced alterations in F1 offspring brain proteome. Using enrichment analyses of pathways for upregulated and downregulated proteins, we found that upregulated proteins had significant enrichments in terms related to translation and translation factors, whereas downregulated proteins displayed enrichments in small molecule metabolic processes, TCA cycles, and electron transport chain (ETC). Using MIENTURNET miRNA prediction tool, dme-miR-10-3p was identified as the top conserved miRNA predicted to target proteins regulated by ancestral diet. RNAi-based knockdown of miR-10 in the brain significantly increased food consumption, implicating miR-10 as a potential factor in programming feeding behavior. Together, these findings suggest that ancestral nutrition may influence offspring feeding behavior through alterations in miRNAs.
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Affiliation(s)
- Alexander K. Murashov
- Department of Physiology & East Carolina Diabetes and Obesity Institute, East Carolina University, Greenville, NC
| | - Elena S. Pak
- Department of Physiology & East Carolina Diabetes and Obesity Institute, East Carolina University, Greenville, NC
| | - Jordan Mar
- Department of Molecular Medicine, University of South Florida, Tampa, FL
| | - Kevin O’Brien
- Department of Biostatistics, College of Allied Health Sciences, East Carolina University, Greenville, NC
| | - Kelsey Fisher-Wellman
- Department of Physiology & East Carolina Diabetes and Obesity Institute, East Carolina University, Greenville, NC
| | - Krishna M. Bhat
- Department of Molecular Medicine, University of South Florida, Tampa, FL
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Sparling AC, King DE, Meyer JN. rol-6 and dpy-10C. elegans mutants have normal mitochondrial function after normalizing to delayed development. MICROPUBLICATION BIOLOGY 2023; 2023:10.17912/micropub.biology.000798. [PMID: 37215639 PMCID: PMC10193146 DOI: 10.17912/micropub.biology.000798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 04/25/2023] [Accepted: 05/02/2023] [Indexed: 05/24/2023]
Abstract
Collagen mutations are commonly used in the creation of Caenorhabditis elegans transgenic strains, but their secondary effects are not fully characterized . We compared the mitochondrial function of N2, dpy-10, rol-6, and PE255 C. elegans . N2 worms exhibited ~2-fold greater volume, mitochondrial DNA copy number, and nuclear DNA copy number than collagen mutants (p<0.05). Whole-worm respirometry and ATP levels were higher in N2 worms, but differences in respirometry largely disappeared after normalization to mitochondrial DNA copy number. This data suggests that rol-6 and dpy-10 mutants are developmentally delayed but have comparable mitochondrial function to N2 worms once the data is normalized to developmental stage.
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Affiliation(s)
| | - Dillon E. King
- Nicholas School of Environment, Duke University, Durham NC
| | - Joel N. Meyer
- Nicholas School of Environment, Duke University, Durham NC
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Sannigrahi MK, Rajagopalan P, Lai L, Liu X, Sahu V, Nakagawa H, Jalaly JB, Brody RM, Morgan IM, Windle BE, Wang X, Gimotty PA, Kelly DP, White EA, Basu D. HPV E6 regulates therapy responses in oropharyngeal cancer by repressing the PGC-1α/ERRα axis. JCI Insight 2022; 7:159600. [PMID: 36134662 PMCID: PMC9675449 DOI: 10.1172/jci.insight.159600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 08/10/2022] [Indexed: 01/25/2023] Open
Abstract
Therapy with radiation plus cisplatin kills HPV+ oropharyngeal squamous cell carcinomas (OPSCCs) by increasing reactive oxygen species beyond cellular antioxidant capacity. To explore why these standard treatments fail for some patients, we evaluated whether the variation in HPV oncoprotein levels among HPV+ OPSCCs affects mitochondrial metabolism, a source of antioxidant capacity. In cell line and patient-derived xenograft models, levels of HPV full-length E6 (fl-E6) inversely correlated with oxidative phosphorylation, antioxidant capacity, and therapy resistance, and fl-E6 was the only HPV oncoprotein to display such correlations. Ectopically expressing fl-E6 in models with low baseline levels reduced mitochondrial mass, depleted antioxidant capacity, and sensitized to therapy. In this setting, fl-E6 repressed the peroxisome proliferator-activated receptor gamma co-activator 1α/estrogen-related receptor α (PGC-1α/ERRα) pathway for mitochondrial biogenesis by reducing p53-dependent PGC-1α transcription. Concordant observations were made in 3 clinical cohorts, where expression of mitochondrial components was higher in tumors of patients with reduced survival. These tumors contained the lowest fl-E6 levels, the highest p53 target gene expression, and an activated PGC-1α/ERRα pathway. Our findings demonstrate that E6 can potentiate treatment responses by depleting mitochondrial antioxidant capacity and provide evidence for low E6 negatively affecting patient survival. E6's interaction with the PGC-1α/ERRα axis has implications for predicting and targeting treatment resistance in OPSCC.
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Affiliation(s)
| | | | - Ling Lai
- Cardiovascular Institute, Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Xinyi Liu
- Department of Pharmacology and Regenerative Medicine, University of Illinois, Chicago, Illinois, USA
| | - Varun Sahu
- Department of Medicine, Columbia University School of Medicine, New York, New York, USA
| | - Hiroshi Nakagawa
- Department of Medicine, Columbia University School of Medicine, New York, New York, USA
| | - Jalal B. Jalaly
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Robert M. Brody
- Department of Otorhinolaryngology — Head and Neck Surgery and
| | - Iain M. Morgan
- Philips Institute for Oral Health Research, School of Dentistry, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Bradford E. Windle
- Philips Institute for Oral Health Research, School of Dentistry, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Xiaowei Wang
- Department of Pharmacology and Regenerative Medicine, University of Illinois, Chicago, Illinois, USA
| | - Phyllis A. Gimotty
- Department of Biostatistics, Epidemiology and Informatics, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Daniel P. Kelly
- Cardiovascular Institute, Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | | | - Devraj Basu
- Department of Otorhinolaryngology — Head and Neck Surgery and
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11
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Leuthner T, Benzing L, Kohrn B, Bergemann C, Hipp M, Hershberger K, Mello D, Sokolskyi T, Stevenson K, Merutka I, Seay S, Gregory S, Kennedy S, Meyer J. Resistance of mitochondrial DNA to cadmium and Aflatoxin B1 damage-induced germline mutation accumulation in C. elegans. Nucleic Acids Res 2022; 50:8626-8642. [PMID: 35947695 PMCID: PMC9410910 DOI: 10.1093/nar/gkac666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 07/11/2022] [Accepted: 07/22/2022] [Indexed: 01/12/2023] Open
Abstract
Mitochondrial DNA (mtDNA) is prone to mutation in aging and over evolutionary time, yet the processes that regulate the accumulation of de novo mtDNA mutations and modulate mtDNA heteroplasmy are not fully elucidated. Mitochondria lack certain DNA repair processes, which could contribute to polymerase error-induced mutations and increase susceptibility to chemical-induced mtDNA mutagenesis. We conducted error-corrected, ultra-sensitive Duplex Sequencing to investigate the effects of two known nuclear genome mutagens, cadmium and Aflatoxin B1, on germline mtDNA mutagenesis in Caenorhabditis elegans. Detection of thousands of mtDNA mutations revealed pervasive heteroplasmy in C. elegans and that mtDNA mutagenesis is dominated by C:G → A:T mutations generally attributed to oxidative damage. However, there was no effect of either exposure on mtDNA mutation frequency, spectrum, or trinucleotide context signature despite a significant increase in nuclear mutation rate after aflatoxin B1 exposure. Mitophagy-deficient mutants pink-1 and dct-1 accumulated significantly higher levels of mtDNA damage compared to wild-type C. elegans after exposures. However, there were only small differences in mtDNA mutation frequency, spectrum, or trinucleotide context signature compared to wild-type after 3050 generations, across all treatments. These findings suggest mitochondria harbor additional previously uncharacterized mechanisms that regulate mtDNA mutational processes across generations.
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Affiliation(s)
- Tess C Leuthner
- Nicholas School of the Environment, Duke University, Durham, NC 27708, USA
| | - Laura Benzing
- Nicholas School of the Environment, Duke University, Durham, NC 27708, USA
| | - Brendan F Kohrn
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA 98195, USA
| | | | - Michael J Hipp
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA 98195, USA
| | | | - Danielle F Mello
- Nicholas School of the Environment, Duke University, Durham, NC 27708, USA
| | - Tymofii Sokolskyi
- Nicholas School of the Environment, Duke University, Durham, NC 27708, USA
| | - Kevin Stevenson
- Duke Molecular Physiology Institute, Duke University, Durham, NC 27701, USA
| | - Ilaria R Merutka
- Nicholas School of the Environment, Duke University, Durham, NC 27708, USA
| | - Sarah A Seay
- Nicholas School of the Environment, Duke University, Durham, NC 27708, USA
| | - Simon G Gregory
- Duke Molecular Physiology Institute, Duke University, Durham, NC 27701, USA,Department of Neurology, Duke University, Durham, NC 27708, USA
| | - Scott R Kennedy
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA 98195, USA
| | - Joel N Meyer
- To whom correspondence should be addressed. Tel: +1 919 613 8109;
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12
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Ma C, Hu R, Costa C, Li J. Genetic Drift and Purifying Selection Shaped Mitochondrial Genome Variation in the High Royal Jelly-Producing Honeybee Strain (Apis mellifera ligustica). Front Genet 2022; 13:835967. [PMID: 35222549 PMCID: PMC8864236 DOI: 10.3389/fgene.2022.835967] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 01/18/2022] [Indexed: 12/16/2022] Open
Abstract
Mitochondrial genomes (mitogenomes) are involved in cellular energy metabolism and have been shown to undergo adaptive evolution in organisms with increased energy-consuming activities. The genetically selected high royal jelly-producing bees (RJBs, Apis mellifera ligustica) in China can produce 10 times more royal jelly, a highly nutritional and functional food, relative to unselected Italian bees (ITBs). To test for potential adaptive evolution of RJB mitochondrial genes, we sequenced mitogenomes from 100 RJBs and 30 ITBs. Haplotype network and phylogenetic analysis indicate that RJBs and ITBs are not reciprocally monophyletic but mainly divided into the RJB- and ITB-dominant sublineages. The RJB-dominant sublineage proportion is 6-fold higher in RJBs (84/100) than in ITBs (4/30), which is mainly attributable to genetic drift rather than positive selection. The RJB-dominant sublineage exhibits a low genetic diversity due to purifying selection. Moreover, mitogenome abundance is not significantly different between RJBs and ITBs, thereby rejecting the association between mitogenome copy number and royal jelly-producing performance. Our findings demonstrate low genetic diversity levels of RJB mitogenomes and reveal genetic drift and purifying selection as potential forces driving RJB mitogenome evolution.
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Affiliation(s)
- Chuan Ma
- Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Ruoyang Hu
- Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Cecilia Costa
- CREA Research Centre for Agriculture and Environment, Bologna, Italy
| | - Jianke Li
- Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, China
- *Correspondence: Jianke Li,
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