1
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Dubie JJ, Katju V, Bergthorsson U. Dissecting the sequential evolution of a selfish mitochondrial genome in Caenorhabditis elegans. Heredity (Edinb) 2024:10.1038/s41437-024-00704-2. [PMID: 38969772 DOI: 10.1038/s41437-024-00704-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 06/24/2024] [Accepted: 06/25/2024] [Indexed: 07/07/2024] Open
Abstract
Mitochondrial genomes exist in a nested hierarchy of populations where mitochondrial variants are subject to genetic drift and selection at each level of organization, sometimes engendering conflict between different levels of selection, and between the nuclear and mitochondrial genomes. Deletion mutants in the Caenorhabditis elegans mitochondrial genome can reach high intracellular frequencies despite strongly detrimental effects on fitness. During a mutation accumulation (MA) experiment in C. elegans, a 499 bp deletion in ctb-1 rose to 90% frequency within cells while significantly reducing fitness. During the experiment, the deletion-bearing mtDNA acquired three additional mutations in nd5, namely two single insertion frameshift mutations in a homopolymeric run, and a base substitution. Despite an additional fitness cost of these secondary mutations, all deletion-bearing molecules contained the nd5 mutations at the termination of the MA experiment. The presence of mutant mtDNA was associated with increased mtDNA copy-number. Variation in mtDNA copy-number was greater in the MA lines than in a wildtype nuclear background, including a severe reduction in copy-number at one generational timepoint. Evolutionary replay experiments using different generations of the MA experiment as starting points suggests that two of the secondary mutations contribute to the proliferation of the original ctb-1 deletion by unknown mechanisms.
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Affiliation(s)
- Joseph J Dubie
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX, USA
- Department of Integrative Biology, University of Texas, Austin, TX, USA
| | - Vaishali Katju
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX, USA.
- Evolutionary Biology, Department of Ecology and Genetics, Uppsala University, Norbyvägen 18D, 752 36, Uppsala, Sweden.
| | - Ulfar Bergthorsson
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX, USA.
- Evolutionary Biology, Department of Ecology and Genetics, Uppsala University, Norbyvägen 18D, 752 36, Uppsala, Sweden.
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2
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Gao AW, Alam GE, Zhu Y, Li W, Katsyuba E, Sulc J, Li TY, Li X, Overmyer KA, Lalou A, Mouchiroud L, Sleiman MB, Cornaglia M, Morel JD, Houtkooper RH, Coon JJ, Auwerx J. High-content phenotypic analysis of a C. elegans recombinant inbred population identifies genetic and molecular regulators of lifespan. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.15.575638. [PMID: 38293129 PMCID: PMC10827074 DOI: 10.1101/2024.01.15.575638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Lifespan is influenced by complex interactions between genetic and environmental factors. Studying those factors in model organisms of a single genetic background limits their translational value for humans. Here, we mapped lifespan determinants in 85 genetically diverse C. elegans recombinant intercross advanced inbred lines (RIAILs). We assessed molecular profiles - transcriptome, proteome, and lipidome - and life-history traits, including lifespan, development, growth dynamics, and reproduction. RIAILs exhibited large variations in lifespan, which positively correlated with developmental time. Among the top candidates obtained from multi-omics data integration and QTL mapping, we validated known and novel longevity modulators, including rict-1, gfm-1 and mltn-1. We translated their relevance to humans using UK Biobank data and showed that variants in RICTOR and GFM1 are associated with an elevated risk of age-related heart disease, dementia, diabetes, kidney, and liver diseases. We organized our dataset as a resource (https://lisp-lms.shinyapps.io/RIAILs/) that allows interactive explorations for new longevity targets.
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Affiliation(s)
- Arwen W. Gao
- Laboratory of Integrative Systems Physiology, Interfaculty Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
- Laboratory Genetic Metabolic Diseases, Amsterdam Gastroenterology, Endocrinology, and Metabolism, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
| | - Gaby El Alam
- Laboratory of Integrative Systems Physiology, Interfaculty Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Yunyun Zhu
- Department of Biomolecular Chemistry, University of Wisconsin, Madison, WI 53506, USA
| | - Weisha Li
- Laboratory Genetic Metabolic Diseases, Amsterdam Gastroenterology, Endocrinology, and Metabolism, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
| | - Elena Katsyuba
- Laboratory of Integrative Systems Physiology, Interfaculty Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
- Nagi Bioscience SA, EPFL Innovation Park, CH-1025 Saint-Sulpice, Switzerland
| | - Jonathan Sulc
- Laboratory of Integrative Systems Physiology, Interfaculty Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Terytty Y. Li
- Laboratory of Integrative Systems Physiology, Interfaculty Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
- Present address: State Key Laboratory of Genetic Engineering, Shanghai Key Laboratory of Metabolic Remodeling and Health, Laboratory of Longevity and Metabolic Adaptations, Institute of Metabolism and Integrative Biology, Fudan University, Shanghai, China
| | - Xiaoxu Li
- Laboratory of Integrative Systems Physiology, Interfaculty Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Katherine A. Overmyer
- Department of Biomolecular Chemistry, University of Wisconsin, Madison, WI 53506, USA
- National Center for Quantitative Biology of Complex Systems, Madison, WI 53706, USA
- Morgridge Institute for Research, Madison, WI 53515, USA
| | - Amelia Lalou
- Laboratory of Integrative Systems Physiology, Interfaculty Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Laurent Mouchiroud
- Laboratory of Integrative Systems Physiology, Interfaculty Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
- Nagi Bioscience SA, EPFL Innovation Park, CH-1025 Saint-Sulpice, Switzerland
| | - Maroun Bou Sleiman
- Laboratory of Integrative Systems Physiology, Interfaculty Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Matteo Cornaglia
- Nagi Bioscience SA, EPFL Innovation Park, CH-1025 Saint-Sulpice, Switzerland
| | - Jean-David Morel
- Laboratory of Integrative Systems Physiology, Interfaculty Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Riekelt H. Houtkooper
- Laboratory Genetic Metabolic Diseases, Amsterdam Gastroenterology, Endocrinology, and Metabolism, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
| | - Joshua J. Coon
- Department of Biomolecular Chemistry, University of Wisconsin, Madison, WI 53506, USA
- National Center for Quantitative Biology of Complex Systems, Madison, WI 53706, USA
- Morgridge Institute for Research, Madison, WI 53515, USA
- Department of Chemistry, University of Wisconsin, Madison, WI 53506, USA
| | - Johan Auwerx
- Laboratory of Integrative Systems Physiology, Interfaculty Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
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3
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Cheng S, Jacobs CGC, Mogollón Pérez EA, Chen D, van de Sanden JT, Bretscher KM, Verweij F, Bosman JS, Hackmann A, Merks RMH, van den Heuvel J, van der Zee M. A life-history allele of large effect shortens developmental time in a wild insect population. Nat Ecol Evol 2024; 8:70-82. [PMID: 37957313 DOI: 10.1038/s41559-023-02246-y] [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: 04/26/2023] [Accepted: 10/04/2023] [Indexed: 11/15/2023]
Abstract
Developmental time is a key life-history trait with large effects on Darwinian fitness. In many insects, developmental time is currently under strong selection to minimize ecological mismatches in seasonal timing induced by climate change. The genetic basis of responses to such selection, however, is poorly understood. To address this problem, we set up a long-term evolve-and-resequence experiment in the beetle Tribolium castaneum and selected replicate, outbred populations for fast or slow embryonic development. The response to this selection was substantial and embryonic developmental timing of the selection lines started to diverge during dorsal closure. Pooled whole-genome resequencing, gene expression analysis and an RNAi screen pinpoint a 222 bp deletion containing binding sites for Broad and Tramtrack upstream of the ecdysone degrading enzyme Cyp18a1 as a main target of selection. Using CRISPR/Cas9 to reconstruct this allele in the homogenous genetic background of a laboratory strain, we unravel how this single deletion advances the embryonic ecdysone peak inducing dorsal closure and show that this allele accelerates larval development but causes a trade-off with fecundity. Our study uncovers a life-history allele of large effect and reveals the evolvability of developmental time in a natural insect population.
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Affiliation(s)
- Shixiong Cheng
- Institute of Biology, Leiden University, Leiden, the Netherlands
| | - Chris G C Jacobs
- Institute of Biology, Leiden University, Leiden, the Netherlands
| | - Elisa A Mogollón Pérez
- Institute of Biology, Leiden University, Leiden, the Netherlands
- Faculty of Biology, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany
| | - Daipeng Chen
- Mathematical Institute, Leiden University, Leiden, the Netherlands
| | - Joep T van de Sanden
- Institute of Biology, Leiden University, Leiden, the Netherlands
- Department of Radiology and Nuclear Medicine, Erasmus MC, Rotterdam, the Netherlands
| | | | - Femke Verweij
- Institute of Biology, Leiden University, Leiden, the Netherlands
| | - Jelle S Bosman
- Institute of Biology, Leiden University, Leiden, the Netherlands
| | - Amke Hackmann
- Institute of Biology, Leiden University, Leiden, the Netherlands
| | - Roeland M H Merks
- Institute of Biology, Leiden University, Leiden, the Netherlands
- Mathematical Institute, Leiden University, Leiden, the Netherlands
| | - Joost van den Heuvel
- Laboratory of Genetics, Wageningen University and Research, Wageningen, the Netherlands
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4
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Lee H, Lee SJV. Recent Progress in Regulation of Aging by Insulin/IGF-1 Signaling in Caenorhabditis elegans. Mol Cells 2022; 45:763-770. [PMID: 36380728 PMCID: PMC9676989 DOI: 10.14348/molcells.2022.0097] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 08/18/2022] [Accepted: 08/20/2022] [Indexed: 11/18/2022] Open
Abstract
Caenorhabditis elegans has been used as a major model organism to identify genetic factors that regulate organismal aging and longevity. Insulin/insulin-like growth factor 1 (IGF- 1) signaling (IIS) regulates aging in many species, ranging from nematodes to humans. C. elegans is a nonpathogenic genetic nematode model, which has been extensively utilized to identify molecular and cellular components that function in organismal aging and longevity. Here, we review the recent progress in the role of IIS in aging and longevity, which involves direct regulation of protein and RNA homeostasis, stress resistance, metabolism and the activities of the endocrine system. We also discuss recently identified genetic factors that interact with canonical IIS components to regulate aging and health span in C. elegans. We expect this review to provide valuable insights into understanding animal aging, which could eventually help develop anti-aging drugs for humans.
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Affiliation(s)
- Hanseul Lee
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
| | - Seung-Jae V. Lee
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
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5
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Anderson RT, Bradley TA, Smith DM. Hyperactivation of the proteasome in Caenorhabditis elegans protects against proteotoxic stress and extends lifespan. J Biol Chem 2022; 298:102415. [PMID: 36007615 PMCID: PMC9486566 DOI: 10.1016/j.jbc.2022.102415] [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: 06/01/2022] [Revised: 08/12/2022] [Accepted: 08/15/2022] [Indexed: 11/13/2022] Open
Abstract
Virtually all age-related neurodegenerative diseases (NDs) can be characterized by the accumulation of proteins inside and outside the cell that are thought to significantly contribute to disease pathogenesis. One of the cell’s primary systems for the degradation of misfolded/damaged proteins is the ubiquitin proteasome system (UPS), and its impairment is implicated in essentially all NDs. Thus, upregulating this system to combat NDs has garnered a great deal of interest in recent years. Various animal models have focused on stimulating 26S activity and increasing 20S proteasome levels, but thus far, none have targeted intrinsic activation of the 20S proteasome itself. Therefore, we constructed an animal model that endogenously expresses a hyperactive, open gate proteasome in Caenorhabditis elegans. The gate-destabilizing mutation that we introduced into the nematode germline yielded a viable nematode population with enhanced proteasomal activity, including peptide, unstructured protein, and ubiquitin-dependent degradation activities. We determined these nematodes showed a significantly increased lifespan and substantial resistance to oxidative and proteotoxic stress but a significant decrease in fecundity. Our results show that introducing a constitutively active proteasome into a multicellular organism is feasible and suggests targeting the proteasome gating mechanism as a valid approach for future age-related disease research efforts in mammals.
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Affiliation(s)
- Raymond T Anderson
- Department of Biochemistry, West Virginia University School of Medicine, 64 Medical Center Dr., Morgantown, WV 26506
| | - Thomas A Bradley
- Department of Biochemistry, West Virginia University School of Medicine, 64 Medical Center Dr., Morgantown, WV 26506
| | - David M Smith
- Department of Biochemistry, West Virginia University School of Medicine, 64 Medical Center Dr., Morgantown, WV 26506.
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6
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Torres TC, Moaddeli D, Averbukh M, Coakley A, Dutta N, Garcia G, Higuchi-Sanabria R. Surveying Low-Cost Methods to Measure Lifespan and Healthspan in Caenorhabditis elegans. JOURNAL OF VISUALIZED EXPERIMENTS : JOVE 2022:10.3791/64091. [PMID: 35665741 PMCID: PMC9881476 DOI: 10.3791/64091] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The discovery and development of Caenorhabditis elegans as a model organism was influential in biology, particularly in the field of aging. Many historical and contemporary studies have identified thousands of lifespan-altering paradigms, including genetic mutations, transgenic gene expression, and hormesis, a beneficial, low-grade exposure to stress. With its many advantages, including a short lifespan, easy and low-cost maintenance, and fully sequenced genome with homology to almost two-thirds of all human genes, C. elegans has quickly been adopted as an outstanding model for stress and aging biology. Here, several standardized methods are surveyed for measuring lifespan and healthspan that can be easily adapted into almost any research environment, especially those with limited equipment and funds. The incredible utility of C. elegans is featured, highlighting the capacity to perform powerful genetic analyses in aging biology without the necessity of extensive infrastructure. Finally, the limitations of each analysis and alternative approaches are discussed for consideration.
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Affiliation(s)
- Toni Castro Torres
- Leonard Davis School of Gerontology, University of Southern California. 3715 McClintock Ave, University Park Campus, Los Angeles, CA 90089
| | - Darius Moaddeli
- Leonard Davis School of Gerontology, University of Southern California. 3715 McClintock Ave, University Park Campus, Los Angeles, CA 90089
| | - Maxim Averbukh
- Leonard Davis School of Gerontology, University of Southern California. 3715 McClintock Ave, University Park Campus, Los Angeles, CA 90089
| | - Aeowynn Coakley
- Leonard Davis School of Gerontology, University of Southern California. 3715 McClintock Ave, University Park Campus, Los Angeles, CA 90089
| | - Naibedya Dutta
- Leonard Davis School of Gerontology, University of Southern California. 3715 McClintock Ave, University Park Campus, Los Angeles, CA 90089
| | - Gilberto Garcia
- Leonard Davis School of Gerontology, University of Southern California. 3715 McClintock Ave, University Park Campus, Los Angeles, CA 90089.,correspondence: ;
| | - Ryo Higuchi-Sanabria
- Leonard Davis School of Gerontology, University of Southern California. 3715 McClintock Ave, University Park Campus, Los Angeles, CA 90089.,correspondence: ;
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7
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Maglioni S, Arsalan N, Hamacher A, Afshar S, Schiavi A, Beller M, Ventura N. High-Content C. elegans Screen Identifies Natural Compounds Impacting Mitochondria-Lipid Homeostasis and Promoting Healthspan. Cells 2021; 11:100. [PMID: 35011662 PMCID: PMC8750055 DOI: 10.3390/cells11010100] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/23/2021] [Accepted: 12/26/2021] [Indexed: 02/06/2023] Open
Abstract
The aging process is concurrently shaped by genetic and extrinsic factors. In this work, we screened a small library of natural compounds, many of marine origin, to identify novel possible anti-aging interventions in Caenorhabditis elegans, a powerful model organism for aging studies. To this aim, we exploited a high-content microscopy platform to search for interventions able to induce phenotypes associated with mild mitochondrial stress, which is known to promote animal's health- and lifespan. Worms were initially exposed to three different concentrations of the drugs in liquid culture, in search of those affecting animal size and expression of mitochondrial stress response genes. This was followed by a validation step with nine compounds on solid media to refine compounds concentration, which led to the identification of four compounds (namely isobavachalcone, manzamine A, kahalalide F and lutein) consistently affecting development, fertility, size and lipid content of the nematodes. Treatment of Drosophila cells with the four hits confirmed their effects on mitochondria activity and lipid content. Out of these four, two were specifically chosen for analysis of age-related parameters, kahalalide F and lutein, which conferred increased resistance to heat and oxidative stress and extended animals' healthspan. We also found that, out of different mitochondrial stress response genes, only the C. elegans ortholog of the synaptic regulatory proteins neuroligins, nlg-1, was consistently induced by the two compounds and mediated lutein healthspan effects.
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Affiliation(s)
- Silvia Maglioni
- IUF-Leibniz Research Institute for Environmental Medicine, 40225 Duesseldorf, Germany; (S.M.); (N.A.); (S.A.); (A.S.)
| | - Nayna Arsalan
- IUF-Leibniz Research Institute for Environmental Medicine, 40225 Duesseldorf, Germany; (S.M.); (N.A.); (S.A.); (A.S.)
| | - Anna Hamacher
- Institute for Mathematical Modeling of Biological Systems, Heinrich Heine University, 40225 Duesseldorf, Germany; (A.H.); (M.B.)
- Systems Biology of Lipid Metabolism, Heinrich Heine University, 40225 Duesseldorf, Germany
| | - Shiwa Afshar
- IUF-Leibniz Research Institute for Environmental Medicine, 40225 Duesseldorf, Germany; (S.M.); (N.A.); (S.A.); (A.S.)
| | - Alfonso Schiavi
- IUF-Leibniz Research Institute for Environmental Medicine, 40225 Duesseldorf, Germany; (S.M.); (N.A.); (S.A.); (A.S.)
| | - Mathias Beller
- Institute for Mathematical Modeling of Biological Systems, Heinrich Heine University, 40225 Duesseldorf, Germany; (A.H.); (M.B.)
- Systems Biology of Lipid Metabolism, Heinrich Heine University, 40225 Duesseldorf, Germany
| | - Natascia Ventura
- IUF-Leibniz Research Institute for Environmental Medicine, 40225 Duesseldorf, Germany; (S.M.); (N.A.); (S.A.); (A.S.)
- Institute for Clinical Chemistry and Laboratory Diagnostic, Medical Faculty, Heinrich Heine University, 40225 Duesseldorf, Germany
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8
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Park HEH, Hwang W, Ham S, Kim E, Altintas O, Park S, Son HG, Lee Y, Lee D, Heo WD, Lee SJV. A PTEN variant uncouples longevity from impaired fitness in Caenorhabditis elegans with reduced insulin/IGF-1 signaling. Nat Commun 2021; 12:5631. [PMID: 34561453 PMCID: PMC8463539 DOI: 10.1038/s41467-021-25920-w] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 08/24/2021] [Indexed: 01/04/2023] Open
Abstract
Insulin/IGF-1 signaling (IIS) regulates various physiological aspects in numerous species. In Caenorhabditis elegans, mutations in the daf-2/insulin/IGF-1 receptor dramatically increase lifespan and immunity, but generally impair motility, growth, and reproduction. Whether these pleiotropic effects can be dissociated at a specific step in insulin/IGF-1 signaling pathway remains unknown. Through performing a mutagenesis screen, we identified a missense mutation daf-18(yh1) that alters a cysteine to tyrosine in DAF-18/PTEN phosphatase, which maintained the long lifespan and enhanced immunity, while improving the reduced motility in adult daf-2 mutants. We showed that the daf-18(yh1) mutation decreased the lipid phosphatase activity of DAF-18/PTEN, while retaining a partial protein tyrosine phosphatase activity. We found that daf-18(yh1) maintained the partial activity of DAF-16/FOXO but restricted the detrimental upregulation of SKN-1/NRF2, contributing to beneficial physiological traits in daf-2 mutants. Our work provides important insights into how one evolutionarily conserved component, PTEN, can coordinate animal health and longevity.
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Affiliation(s)
- Hae-Eun H Park
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea
| | - Wooseon Hwang
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, 37673, South Korea
| | - Seokjin Ham
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea
| | - Eunah Kim
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea
| | - Ozlem Altintas
- School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, Pohang, 37673, South Korea
| | - Sangsoon Park
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea
| | - Heehwa G Son
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea
| | - Yujin Lee
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea
| | - Dongyeop Lee
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, 37673, South Korea
| | - Won Do Heo
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea
| | - Seung-Jae V Lee
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea.
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9
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Wu D, Cai W, Zhang X, Lan J, Zou L, Chen SJ, Wu Z, Chen D. Inhibition of PAR-1 delays aging via activating AMPK in C. elegans. Aging (Albany NY) 2020; 12:25700-25717. [PMID: 33232266 PMCID: PMC7803586 DOI: 10.18632/aging.104180] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 09/22/2020] [Indexed: 02/06/2023]
Abstract
The antagonistic pleiotropy theory of aging suggests that genes essential for growth and development are likely to modulate aging later in life. Previous studies in C. elegans demonstrate that inhibition of certain developmentally essential genes during adulthood leads to significant lifespan extension. PAR-1, a highly conserved serine/threonine kinase, functions as a key cellular polarity regulator during the embryonic development. However, the role of PAR-1 during adulthood remains unknown. Here we show that inhibition of par-1 either by a temperature-sensitive mutant or by RNAi knockdown only during adulthood is sufficient to extend lifespan in C. elegans. Inhibition of par-1 also improves healthspan, as indicated by increased stress resistance, enhanced proteotoxicity resistance, as well as reduced muscular function decline over time. Additionally, tissue-enriched RNAi knockdown analysis reveals that PAR-1 mainly functions in the epidermis to regulate lifespan. Further genetic epistatic and molecular studies demonstrate that the effect of par-1 on lifespan requires the AMP-activated protein kinase (AMPK), and RNAi knockdown of par-1 results in age-dependent AMPK activation and reduced lipid accumulation in the metabolic tissue. Taken together, our findings reveal a previously undescribed function of PAR-1 in adulthood, which will help to understand the molecular links between development and aging.
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Affiliation(s)
- Di Wu
- State Key Laboratory of Pharmaceutical Biotechnology, Model Animal Research Center of Medical School, Nanjing University, Pukou, Nanjing 210061, Jiangsu, China
| | - Waijiao Cai
- Institute of Traditional Chinese and Western Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Xuan Zhang
- State Key Laboratory of Pharmaceutical Biotechnology, Model Animal Research Center of Medical School, Nanjing University, Pukou, Nanjing 210061, Jiangsu, China
| | - Jianfeng Lan
- Affiliated Hospital of Guilin Medical University, Guilin 541001, Guangxi, China
| | - Lina Zou
- State Key Laboratory of Pharmaceutical Biotechnology, Model Animal Research Center of Medical School, Nanjing University, Pukou, Nanjing 210061, Jiangsu, China
| | - Samuel J Chen
- Department of Mechanical, Aerospace, and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - Zixing Wu
- State Key Laboratory of Pharmaceutical Biotechnology, Model Animal Research Center of Medical School, Nanjing University, Pukou, Nanjing 210061, Jiangsu, China
| | - Di Chen
- State Key Laboratory of Pharmaceutical Biotechnology, Model Animal Research Center of Medical School, Nanjing University, Pukou, Nanjing 210061, Jiangsu, China
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10
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Marchionni S, Sell C, Lorenzini A. Development and Longevity: Cellular and Molecular Determinants - A Mini-Review. Gerontology 2020; 66:223-230. [PMID: 32036369 DOI: 10.1159/000505327] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 12/10/2019] [Indexed: 11/19/2022] Open
Abstract
Across species, development and longevity are tightly linked. We discuss the relevant literature and suggest that the root for this stringent relationship is the rate of development. The basis for the relationship between rate of development and longevity lies in adaptations that have occurred through evolution at multiple levels of biological complexity: organism, organ, cellular, and molecular. Thus, the analysis of the relationship is of interest for multiple fields of biology.
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Affiliation(s)
- Silvia Marchionni
- Department of Biomedical and Neuromotor Sciences (DIBINEM), University of Bologna, Bologna, Italy
| | - Christian Sell
- Department of Biochemistry & Molecular Biology, Drexel University College of Medicine, Philadelphia, Pennsylvania, USA
| | - Antonello Lorenzini
- Department of Biomedical and Neuromotor Sciences (DIBINEM), University of Bologna, Bologna, Italy,
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11
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Guo K, Su L, Wang Y, Liu H, Lin J, Cheng P, Yin X, Liang M, Wang Q, Huang Z. Antioxidant and anti-aging effects of a sea cucumber protein hydrolyzate and bioinformatic characterization of its composing peptides. Food Funct 2020; 11:5004-5016. [DOI: 10.1039/d0fo00560f] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
C. elegans-based activity guided and size-based isolation of antioxidant peptide fractions from a sea cucumber protein hydrolyzate and their bioinformatic characterization.
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Dubie JJ, Caraway AR, Stout MM, Katju V, Bergthorsson U. The conflict within: origin, proliferation and persistence of a spontaneously arising selfish mitochondrial genome. Philos Trans R Soc Lond B Biol Sci 2019; 375:20190174. [PMID: 31787044 DOI: 10.1098/rstb.2019.0174] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Mitochondrial genomes can sustain mutations that are simultaneously detrimental to individual fitness and yet, can proliferate within individuals owing to a replicative advantage. We analysed the fitness effects and population dynamics of a mitochondrial genome containing a novel 499 bp deletion in the cytochrome b(1) (ctb-1) gene (Δctb-1) encoding the cytochrome b of complex III in Caenorhabditis elegans. Δctb-1 reached a high heteroplasmic frequency of 96% in one experimental line during a mutation accumulation experiment and was linked to additional spontaneous mutations in nd5 and tRNA-Asn. The Δctb-1 mutant mitotype imposed a significant fitness cost including a 65% and 52% reduction in productivity and competitive fitness, respectively, relative to individuals bearing wild-type (WT) mitochondria. Deletion-bearing worms were rapidly purged within a few generations when competed against WT mitochondrial DNA (mtDNA) bearing worms in experimental populations. By contrast, the Δctb-1 mitotype was able to persist in large populations comprising heteroplasmic individuals only, although the average intracellular frequency of Δctb-1 exhibited a slow decline owing to competition among individuals bearing different frequencies of the heteroplasmy. Within experimental lines subjected to severe population bottlenecks (n = 1), the relative intracellular frequency of Δctb-1 increased, which is a hallmark of selfish drive. A positive correlation between Δctb-1 and WT mtDNA copy-number suggests a mechanism that increases total mtDNA per se, and does not discern the Δctb-1 mitotype from the WT mtDNA. This study demonstrates the selfish nature of the Δctb-1 mitotype, given its transmission advantage and substantial fitness load for the host, and highlights the importance of population size for the population dynamics of selfish mtDNA. This article is part of the theme issue 'Linking the mitochondrial genotype to phenotype: a complex endeavour'.
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Affiliation(s)
- Joseph James Dubie
- Department of Veterinary Integrative Biosciences, Texas A&M University, 402 Raymond Stotzer Parkway, College Station, TX 77845, USA
| | - Avery Robert Caraway
- Department of Veterinary Integrative Biosciences, Texas A&M University, 402 Raymond Stotzer Parkway, College Station, TX 77845, USA
| | - McKenna Margaret Stout
- Department of Veterinary Integrative Biosciences, Texas A&M University, 402 Raymond Stotzer Parkway, College Station, TX 77845, USA
| | - Vaishali Katju
- Department of Veterinary Integrative Biosciences, Texas A&M University, 402 Raymond Stotzer Parkway, College Station, TX 77845, USA
| | - Ulfar Bergthorsson
- Department of Veterinary Integrative Biosciences, Texas A&M University, 402 Raymond Stotzer Parkway, College Station, TX 77845, USA
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Admasu TD, Chaithanya Batchu K, Barardo D, Ng LF, Lam VYM, Xiao L, Cazenave-Gassiot A, Wenk MR, Tolwinski NS, Gruber J. Drug Synergy Slows Aging and Improves Healthspan through IGF and SREBP Lipid Signaling. Dev Cell 2018; 47:67-79.e5. [DOI: 10.1016/j.devcel.2018.09.001] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 06/18/2018] [Accepted: 08/31/2018] [Indexed: 12/12/2022]
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Leech T, Sait SM, Bretman A. Sex-specific effects of social isolation on ageing in Drosophila melanogaster. JOURNAL OF INSECT PHYSIOLOGY 2017; 102:12-17. [PMID: 28830760 DOI: 10.1016/j.jinsphys.2017.08.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 08/18/2017] [Accepted: 08/18/2017] [Indexed: 06/07/2023]
Abstract
Social environments can have a major impact on ageing profiles in many animals. However, such patterns in variation in ageing and their underlying mechanisms are not well understood, particularly because both social contact and isolation can be stressful. Here, we use Drosophila melanogaster fruitflies to examine sex-specific effects of social contact. We kept flies in isolation versus same-sex pairing throughout life, and measured actuarial (lifespan) and functional senescence (declines in climbing ability). To investigate underlying mechanisms, we determined whether an immune stress (wounding) interacted with effects of social contact, and assessed behaviours that could contribute to differences in ageing rates. Pairing reduced lifespan for both sexes, but the effect was greater for males. In contrast, pairing reduced the rate of decline in climbing ability for females, whereas for males, pairing caused more rapid declines with age. Wounding reduced lifespan for both sexes, but doubled the negative effect of pairing on male lifespan. We found no evidence that these effects are driven by behavioural interactions. These findings suggest that males and females are differentially sensitive to social contact, that environmental stressors can impact actuarial and functional senescence differently, and that these effects can interact with environmental stressors, such as immune challenges.
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Affiliation(s)
- Thomas Leech
- School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK.
| | - Steven M Sait
- School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK.
| | - Amanda Bretman
- School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK.
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