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Zhu F, Wang B, Qin D, Su X, Yu L, Wu J, Law BY, Guo M, Yu C, Zhou X, Wu A. Carpesii fructus extract exhibits neuroprotective effects in cellular and Caenorhabditis elegans models of Parkinson's disease. CNS Neurosci Ther 2024; 30:e14515. [PMID: 37905594 PMCID: PMC11017466 DOI: 10.1111/cns.14515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 10/05/2023] [Accepted: 10/14/2023] [Indexed: 11/02/2023] Open
Abstract
OBJECTIVE Parkinson's disease (PD) is a debilitating neurodegenerative disorder characterized by the progressive loss of dopaminergic neurons in the substantia nigra. Despite extensive research, no definitive cure or effective disease-modifying treatment for PD exists to date. Therefore, the identification of novel therapeutic agents with neuroprotective properties is of utmost importance. Here, we aimed to investigate the potential neuroprotective effects of Carpesii fructus extract (CFE) in both cellular and Caenorhabditis elegans (C. elegans) models of PD. METHODS The neuroprotective effect of CFE in H2O2- or 6-OHDA-induced PC-12 cells and α-synuclein-overexpressing PC-12 cells were investigated by determining the cell viability, mitochondrial damage, reactive oxygen species (ROS) production, apoptosis, and α-synuclein expression. In NL5901, BZ555, and N2 worms, the expression of α-synuclein, motive ability, the viability of dopaminergic neurons, lifespan, and aging-related phenotypes were investigated. The signaling pathway was detected by Western blotting and validated by employing small inhibitors and RNAi bacteria. RESULTS In cellular models of PD, CFE significantly attenuated H2O2- or 6-OHDA-induced toxicity, as evidenced by increased cell viability and reduced apoptosis rate. In addition, CFE treatment suppressed ROS generation and restored mitochondrial membrane potential, highlighting its potential as a mitochondrial protective agent. Furthermore, CFE reduced the expression of α-synuclein in wide type (WT)-, A53T-, A30P-, or E46K-α-synuclein-overexpressing PC-12 cells. Our further findings reveal that CFE administration reduced α-synuclein expression and improved its induced locomotor deficits in NL5901 worms, protected dopaminergic neurons against 6-OHDA-induced degeneration in BZ555 worms, extended lifespan, delayed aging-related phenotypes, and enhanced the ability of stress resistance in N2 worms. Mechanistic studies suggest that the neuroprotective effects of CFE may involve the modulation of the MAPK signaling pathway, including ERK, JNK, and p38, whereas the interference of these pathways attenuated the neuroprotective effect of CFE in vitro and in vivo. CONCLUSION Overall, our study highlights the potential therapeutic value of CFE as a neuroprotective agent in the context of PD. Furthermore, elucidation of the active compounds of CFE will provide valuable insights for the development of novel therapeutic strategies for PD.
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Affiliation(s)
- Feng‐Dan Zhu
- Sichuan Key Medical Laboratory of New Drug Discovery and Drugability Evaluation, Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, Key Laboratory of Medical Electrophysiology of Ministry of EducationSchool of Pharmacy, Southwest Medical UniversityLuzhouChina
| | - Bin‐Ding Wang
- Sichuan Key Medical Laboratory of New Drug Discovery and Drugability Evaluation, Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, Key Laboratory of Medical Electrophysiology of Ministry of EducationSchool of Pharmacy, Southwest Medical UniversityLuzhouChina
| | - Da‐Lian Qin
- Sichuan Key Medical Laboratory of New Drug Discovery and Drugability Evaluation, Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, Key Laboratory of Medical Electrophysiology of Ministry of EducationSchool of Pharmacy, Southwest Medical UniversityLuzhouChina
| | - Xiao‐Hui Su
- Institute of Chinese Materia Medica, China Academy of Chinese Medical SciencesBeijingChina
| | - Lu Yu
- Sichuan Key Medical Laboratory of New Drug Discovery and Drugability Evaluation, Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, Key Laboratory of Medical Electrophysiology of Ministry of EducationSchool of Pharmacy, Southwest Medical UniversityLuzhouChina
| | - Jian‐Ming Wu
- Sichuan Key Medical Laboratory of New Drug Discovery and Drugability Evaluation, Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, Key Laboratory of Medical Electrophysiology of Ministry of EducationSchool of Pharmacy, Southwest Medical UniversityLuzhouChina
| | - Betty Yuen‐Kwan Law
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and TechnologyTaipaChina
| | - Min‐Song Guo
- Sichuan Key Medical Laboratory of New Drug Discovery and Drugability Evaluation, Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, Key Laboratory of Medical Electrophysiology of Ministry of EducationSchool of Pharmacy, Southwest Medical UniversityLuzhouChina
| | - Chong‐Lin Yu
- Sichuan Key Medical Laboratory of New Drug Discovery and Drugability Evaluation, Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, Key Laboratory of Medical Electrophysiology of Ministry of EducationSchool of Pharmacy, Southwest Medical UniversityLuzhouChina
| | - Xiao‐Gang Zhou
- Sichuan Key Medical Laboratory of New Drug Discovery and Drugability Evaluation, Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, Key Laboratory of Medical Electrophysiology of Ministry of EducationSchool of Pharmacy, Southwest Medical UniversityLuzhouChina
| | - An‐Guo Wu
- Sichuan Key Medical Laboratory of New Drug Discovery and Drugability Evaluation, Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, Key Laboratory of Medical Electrophysiology of Ministry of EducationSchool of Pharmacy, Southwest Medical UniversityLuzhouChina
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Ham S, Kim SS, Park S, Kwon HC, Ha SG, Bae Y, Lee GY, Lee SJV. Combinatorial transcriptomic and genetic dissection of insulin/IGF-1 signaling-regulated longevity in Caenorhabditis elegans. Aging Cell 2024:e14151. [PMID: 38529797 DOI: 10.1111/acel.14151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 02/22/2024] [Accepted: 03/10/2024] [Indexed: 03/27/2024] Open
Abstract
Classical genetic analysis is invaluable for understanding the genetic interactions underlying specific phenotypes, but requires laborious and subjective experiments to characterize polygenic and quantitative traits. Contrarily, transcriptomic analysis enables the simultaneous and objective identification of multiple genes whose expression changes are associated with specific phenotypes. Here, we conducted transcriptomic analysis of genes crucial for longevity using datasets with daf-2/insulin/IGF-1 receptor mutant Caenorhabditis elegans. Our analysis unraveled multiple epistatic relationships at the transcriptomic level, in addition to verifying genetically established interactions. Our combinatorial analysis also revealed transcriptomic changes associated with longevity conferred by daf-2 mutations. In particular, we demonstrated that the extent of lifespan changes caused by various mutant alleles of the longevity transcription factor daf-16/FOXO matched their effects on transcriptomic changes in daf-2 mutants. We identified specific aging-regulating signaling pathways and subsets of structural and functional RNA elements altered by different genes in daf-2 mutants. Lastly, we elucidated the functional cooperation between several longevity regulators, based on the combination of transcriptomic and molecular genetic analysis. These data suggest that different biological processes coordinately exert their effects on longevity in biological networks. Together our work demonstrates the utility of transcriptomic dissection analysis for identifying important genetic interactions for physiological processes, including aging and longevity.
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Affiliation(s)
- Seokjin Ham
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
| | - Sieun S Kim
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
| | - Sangsoon Park
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
| | - Hyunwoo C Kwon
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
| | - Seokjun G Ha
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
| | - Yunkyu Bae
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
| | - Gee-Yoon Lee
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
| | - Seung-Jae V Lee
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
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Richaud M, Rasasombat S, Cuq P, Galas S, Marti-Mestres G. Water in cosmetics and Caenorhabditis elegans as an alternative model for lifespan assessment. Int J Cosmet Sci 2024; 46:96-105. [PMID: 37704396 DOI: 10.1111/ics.12912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 08/21/2023] [Accepted: 09/08/2023] [Indexed: 09/15/2023]
Abstract
OBJECTIVE Water, often considered a fundamental component of life, is the most commonly used ingredient in the formulation of dermocosmetic products, with waterless products being the exception. Dermocosmetic products can contain anywhere from 50% to 85% water, which contributes to their texture and specific characteristics. The chemical composition of water varies depending on its origin and can be categorized as highly mineralized or low mineralized. These compositions could impact the water's efficacy in anti-aging applications. In this study, the objective is evaluating the anti-aging properties of highly and low mineralized water with the model organism Caenorhabditis elegans. METHODS In this article, we employed the alternative model organism C. elegans to assess the impact of 5 branded waters, one physiological water and one ultra-pure water on the model's lifespan, using the survival medium conventionally used for C. elegans as a comparison. RESULTS Waters may have either a positive or a negative impact on the C. elegans lifespan expectancy. Our results indicate that only one of the water brands we assessed (Volvic®) had a significantly positive effect on worm longevity. In contrast, we found that two other brands (Hepar® and Contrex®) had a negative impact on the later stages of the worm's adulthood. Furthermore, we demonstrated that the impact of the brand water samples on lifespan expectancy varied depending on their physicochemical composition, in particular when ion concentrations were most extreme. CONCLUSION This study shows that the highly mineralized waters studied have a detrimental effect on the survival of C. elegans, and a preliminary test with ultra-pure water could not be completed due to its deleterious effect on the worms. This suggests the hypothesis that both highly mineralized and completely demineralized waters may not be the most suitable for skin formulations.
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Affiliation(s)
- Myriam Richaud
- IBMM, University of Montpellier, CNRS, ENSCM, Montpellier, France
| | - Sarah Rasasombat
- IBMM, University of Montpellier, CNRS, ENSCM, Montpellier, France
| | - Pierre Cuq
- IBMM, University of Montpellier, CNRS, ENSCM, Montpellier, France
| | - Simon Galas
- IBMM, University of Montpellier, CNRS, ENSCM, Montpellier, France
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Kagami LP, Gonçalves IL, da Silva ÁC, Silva AC, das Neves GM, Göethel G, Spillere A, Dos Santos MR, Figueiró F, Garcia SC, Ávila DS, Battastini AMO, Eifler-Lima VL. LaSOM 335, active against bladder cancer cells, interferes with Let-60 (hRas) and reduces CD73 expression/activity. Chem Biol Drug Des 2023; 102:536-546. [PMID: 37272688 DOI: 10.1111/cbdd.14273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 04/04/2023] [Accepted: 05/08/2023] [Indexed: 06/06/2023]
Abstract
Bladder cancer is the fourth most common malignancy in men. It can present along the entire continuum of severity, from mild to well-differentiated disease to extremely malignant tumors with low survival rates. Human RAS genes are the most frequently mutated oncogenes in human cancers, and the critical role of aberrant Ras protein function in carcinogenesis is well established. Therefore, considerable efforts have been devoted to the development of anti-Ras inhibitors for cancer treatment. This study presents the biphenyl dihydropyrimidinone LaSOM 335 with high activity against T24 bladder cancer cells (IC50 = 10.73 ± 0.53 μM) and selectivity of cytotoxicity for this cancer cell line compared to two non-cancer cell lines investigated. Furthermore, we also show that this compound reduced vulvar development in the mutant let-60 gene of Caenorhabditis elegans. Let-60 is a homolog of the mammalian Ras gene. In addition, we observed that LaSOM 335 inhibits the enzymatic activity of CD73 and decreases CD73 expression. Possibly, this expression decrease is due to downstream EGFR signaling via the Ras-Raf-ERK pathway, that directly regulates CD73 expression via ERK1/2. Evidence suggests that non-immunomodulating functions of CD73 play an equally important role for cancer cell survival, progression, and migration. Regarding we also notice that LaSOM 335 was safe in the in vivo model of C. elegans. The set of these findings makes this biphenyl dihydropyrimidinone a promising candidate for further investigations in the bladder cancer field.
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Affiliation(s)
- Luciano Porto Kagami
- Laboratório de Síntese Orgânica Medicinal - LaSOM®, Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Itamar Luís Gonçalves
- Laboratório de Síntese Orgânica Medicinal - LaSOM®, Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Faculdade de Medicina, Universidade Regional Integrada do Alto Uruguai e das Missões-URI, Erechim, Brazil
| | - Álisson Coldebella da Silva
- Departamento de Bioquímica, Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Aline Castro Silva
- Graduation Program in Biochemistry, Laboratory of Biochemistry and Toxicology in Caenorhabditis elegans, Federal University of Pampa, Uruguaiana, Brazil
| | - Gustavo Machado das Neves
- Laboratório de Síntese Orgânica Medicinal - LaSOM®, Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Gabriela Göethel
- Laboratório de Síntese Orgânica Medicinal - LaSOM®, Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Adriano Spillere
- Laboratório de Síntese Orgânica Medicinal - LaSOM®, Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Maitê Roxo Dos Santos
- Laboratório de Síntese Orgânica Medicinal - LaSOM®, Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Fabrício Figueiró
- Departamento de Bioquímica, Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Solange Cristina Garcia
- Laboratory of Toxicology (LATOX), Department of Analyses, Programa de Pós-Graduação em Ciências Farmacêuticas, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Daiana Silva Ávila
- Graduation Program in Biochemistry, Laboratory of Biochemistry and Toxicology in Caenorhabditis elegans, Federal University of Pampa, Uruguaiana, Brazil
| | - Ana Maria Oliveira Battastini
- Departamento de Bioquímica, Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Vera Lucia Eifler-Lima
- Laboratório de Síntese Orgânica Medicinal - LaSOM®, Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
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Ren X, Zhou H, Sun Y, Fu H, Ran Y, Yang B, Yang F, Bjorklund M, Xu S. MIRO-1 interacts with VDAC-1 to regulate mitochondrial membrane potential in Caenorhabditis elegans. EMBO Rep 2023; 24:e56297. [PMID: 37306041 PMCID: PMC10398670 DOI: 10.15252/embr.202256297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 05/11/2023] [Accepted: 05/25/2023] [Indexed: 06/13/2023] Open
Abstract
Precise regulation of mitochondrial fusion and fission is essential for cellular activity and animal development. Imbalances between these processes can lead to fragmentation and loss of normal membrane potential in individual mitochondria. In this study, we show that MIRO-1 is stochastically elevated in individual fragmented mitochondria and is required for maintaining mitochondrial membrane potential. We further observe a higher level of membrane potential in fragmented mitochondria in fzo-1 mutants and wounded animals. Moreover, MIRO-1 interacts with VDAC-1, a crucial mitochondrial ion channel located in the outer mitochondrial membrane, and this interaction depends on the residues E473 of MIRO-1 and K163 of VDAC-1. The E473G point mutation disrupts their interaction, resulting in a reduction of the mitochondrial membrane potential. Our findings suggest that MIRO-1 regulates membrane potential and maintains mitochondrial activity and animal health by interacting with VDAC-1. This study provides insight into the mechanisms underlying the stochastic maintenance of membrane potential in fragmented mitochondria.
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Affiliation(s)
- Xuecong Ren
- Center for Stem Cell and Regenerative Medicine and Department of Burns and Wound Repair of the Second Affiliated HospitalThe Zhejiang University‐University of Edinburgh Institute, Zhejiang University School of MedicineHangzhouChina
| | - Hengda Zhou
- Center for Stem Cell and Regenerative Medicine and Department of Burns and Wound Repair of the Second Affiliated HospitalThe Zhejiang University‐University of Edinburgh Institute, Zhejiang University School of MedicineHangzhouChina
- International Biomedicine‐X Research Center of the Second Affiliated HospitalZhejiang University School of MedicineHangzhouChina
| | - Yujie Sun
- Center for Stem Cell and Regenerative Medicine and Department of Burns and Wound Repair of the Second Affiliated HospitalThe Zhejiang University‐University of Edinburgh Institute, Zhejiang University School of MedicineHangzhouChina
- International Biomedicine‐X Research Center of the Second Affiliated HospitalZhejiang University School of MedicineHangzhouChina
| | - Hongying Fu
- Center for Stem Cell and Regenerative Medicine and Department of Burns and Wound Repair of the Second Affiliated HospitalThe Zhejiang University‐University of Edinburgh Institute, Zhejiang University School of MedicineHangzhouChina
| | - Yu Ran
- Zhejiang Provincial Key Laboratory for Cancer Molecular Cell BiologyLife Sciences Institute, Zhejiang UniversityHangzhouChina
| | - Bing Yang
- Zhejiang Provincial Key Laboratory for Cancer Molecular Cell BiologyLife Sciences Institute, Zhejiang UniversityHangzhouChina
| | - Fan Yang
- Department of Biophysics and Kidney Disease Center of the First Affiliated HospitalZhejiang University School of MedicineHangzhouChina
| | - Mikael Bjorklund
- Centre for Cellular Biology and SignallingZhejiang University‐University of Edinburgh InstituteHainingChina
- School of MedicineZhejiang UniversityHangzhouChina
| | - Suhong Xu
- Center for Stem Cell and Regenerative Medicine and Department of Burns and Wound Repair of the Second Affiliated HospitalThe Zhejiang University‐University of Edinburgh Institute, Zhejiang University School of MedicineHangzhouChina
- International Biomedicine‐X Research Center of the Second Affiliated HospitalZhejiang University School of MedicineHangzhouChina
- Department of Reproductive Endocrinology, Women's HospitalZhejiang University School of MedicineHangzhouChina
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van Wijk MH, Davies AG, Sterken MG, Mathies LD, Quamme EC, Blackwell GG, Riksen JAG, Kammenga JE, Bettinger JC. Natural allelic variation modifies acute ethanol response phenotypes in wild strains of C. elegans. Alcohol Clin Exp Res (Hoboken) 2023; 47:1505-1517. [PMID: 37356915 DOI: 10.1111/acer.15139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 06/12/2023] [Accepted: 06/20/2023] [Indexed: 06/27/2023]
Abstract
BACKGROUND Genetic variation contributes to the likelihood that an individual will develop an alcohol use disorder (AUD). Traditional laboratory studies in animal models have elucidated the molecular pharmacology of ethanol, but laboratory-derived genetic manipulations rarely model the naturally occurring genetic variation observed in wild populations. Rather, these manipulations are biased toward identifying genes of central importance in the phenotypes. Because changes in such genes can confer selective disadvantages, they are not ideal candidates for carrying AUD risk alleles in humans. We sought to exploit Caenorhabditis elegans to identify allelic variation existing in the wild that modulates ethanol response behaviors. METHODS We tested the acute ethanol responses of four strains recently isolated from the wild (JU1511, JU1926, JU1931, and JU1941) and 41 multiparental recombinant inbred lines (mpRILs) derived from them. We assessed locomotion at 10, 30, and 50 min on low and high ethanol concentrations. We performed principal component analyses (PCA) on the different phenotypes, tested for transgressive behavior, calculated heritability, and determined the correlations between behavioral responses. RESULTS We observed a range of responses to ethanol across the strains. We detected a low-concentration locomotor activation effect in some of the mpRILs not seen in the laboratory wild-type strain. PCA showed different ethanol response behaviors to be independent. We observed transgressive behavior for many of the measured phenotypes and found that multiple behaviors were uncorrelated. The average broad-sense heritability for all phenotypes was 23.2%. CONCLUSIONS Genetic variation significantly affects multiple acute ethanol response behaviors, many of which are independent of one another. This suggests that the genetic variation captured by these strains likely affects multiple biological mechanisms through which ethanol acts. Further study of these strains may allow these distinct mechanisms to be identified.
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Affiliation(s)
- Marijke H van Wijk
- Laboratory of Nematology, Wageningen University & Research, Wageningen, The Netherlands
| | - Andrew G Davies
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Mark G Sterken
- Laboratory of Nematology, Wageningen University & Research, Wageningen, The Netherlands
| | - Laura D Mathies
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Elizabeth C Quamme
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, Virginia, USA
| | - GinaMari G Blackwell
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Joost A G Riksen
- Laboratory of Nematology, Wageningen University & Research, Wageningen, The Netherlands
| | - Jan E Kammenga
- Laboratory of Nematology, Wageningen University & Research, Wageningen, The Netherlands
| | - Jill C Bettinger
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, Virginia, USA
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Yu Y, Chen J, An L, Huang T, Wang W, Cheng Z, Wang L, Xu X, Zhao Z, Fu X, Ma J. Knockdown of phosphatases of regenerating liver-1 prolongs the lifespan of Caenorhabditis elegans via activating DAF-16/FOXO. FASEB J 2023; 37:e22844. [PMID: 36906287 DOI: 10.1096/fj.202202003r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/20/2023] [Accepted: 02/15/2023] [Indexed: 03/13/2023]
Abstract
Phosphatases of regenerating liver (PRLs) are dual-specificity protein phosphatases. The aberrant expression of PRLs threatens human health, but their biological functions and pathogenic mechanisms are unclear yet. Herein, the structure and biological functions of PRLs were investigated using the Caenorhabditis elegans (C. elegans). Structurally, this phosphatase in C. elegans, named PRL-1, consisted of a conserved signature sequence WPD loop and a single C(X)5 R domain. Besides, by Western blot, immunohistochemistry and immunofluorescence staining, PRL-1 was proved to mainly express in larval stages and express in intestinal tissues. Afterward, by feeding-based RNA-interference method, knockdown of prl-1 prolonged the lifespan of C. elegans but also improved their healthspan, such as locomotion, pharyngeal pumping frequency, and defecation interval time. Furthermore, the above effects of prl-1 appeared to be taken without acting on germline signaling, diet restriction pathway, insulin/insulin-like growth factor 1 signaling pathway, and SIR-2.1 but through a DAF-16-dependent pathway. Moreover, knockdown of prl-1 induced the nuclear translocation of DAF-16, and upregulated the expression of daf-16, sod-3, mtl-1, and ctl-2. Finally, suppression of prl-1 also reduced the ROS. In conclusion, suppression of prl-1 enhanced the lifespan and survival quality of C. elegans, which provides a theoretical basis for the pathogenesis of PRLs in related human diseases.
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Affiliation(s)
- Yaoru Yu
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun, China
| | - Jing Chen
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun, China
| | - Lu An
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun, China
| | - Tianci Huang
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun, China
| | - Wenbo Wang
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun, China
| | - Ziqi Cheng
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun, China
| | - Lu Wang
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun, China
| | - Xuesong Xu
- Clinical Laboratory of China-Japan Union Hospital, Jilin University, Changchun, China
| | - Zhizhuang Zhao
- Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Xueqi Fu
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun, China
| | - Junfeng Ma
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun, China
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Wong SQ, Ryan CJ, Bonal DM, Mills J, Lapierre LR. Neuronal HLH-30/TFEB modulates peripheral mitochondrial fragmentation to improve thermoresistance in Caenorhabditis elegans. Aging Cell 2023; 22:e13741. [PMID: 36419219 PMCID: PMC10014052 DOI: 10.1111/acel.13741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 09/29/2022] [Accepted: 10/31/2022] [Indexed: 11/25/2022] Open
Abstract
Transcription factor EB (TFEB) is a conserved master transcriptional activator of autophagy and lysosomal genes that modulates organismal lifespan regulation and stress resistance. As neurons can coordinate organism-wide processes, we investigated the role of neuronal TFEB in stress resistance and longevity. To this end, the Caenorhabditis elegans TFEB ortholog, hlh-30, was rescued panneuronally in hlh-30 loss of function mutants. While important in the long lifespan of daf-2 animals, neuronal HLH-30/TFEB was not sufficient to restore normal lifespan in short-lived hlh-30 mutants. However, neuronal HLH-30/TFEB rescue mediated robust improvements in the heat stress resistance of wildtype but not daf-2 animals. Notably, these mechanisms can be uncoupled, as neuronal HLH-30/TFEB requires DAF-16/FOXO to regulate longevity but not thermoresistance. Through further transcriptomics profiling and functional analysis, we discovered that neuronal HLH-30/TFEB modulates neurotransmission through the hitherto uncharacterized protein W06A11.1 by inducing peripheral mitochondrial fragmentation and organismal heat stress resistance in a non-cell autonomous manner. Taken together, this study uncovers a novel mechanism of heat stress protection mediated by neuronal HLH-30/TFEB.
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Affiliation(s)
- Shi Quan Wong
- Department of Molecular Biology, Cell Biology and BiochemistryBrown UniversityProvidenceRhode IslandUSA
| | - Catherine J. Ryan
- Department of Molecular Biology, Cell Biology and BiochemistryBrown UniversityProvidenceRhode IslandUSA
| | - Dennis M. Bonal
- Pathobiology Graduate Program, Division of Biology & MedicineBrown UniversityProvidenceRhode IslandUSA
| | - Joslyn Mills
- Department of Molecular Biology, Cell Biology and BiochemistryBrown UniversityProvidenceRhode IslandUSA
- Department of BiologyWheaton CollegeNortonMassachusettsUSA
| | - Louis R. Lapierre
- Department of Molecular Biology, Cell Biology and BiochemistryBrown UniversityProvidenceRhode IslandUSA
- Département de Chimie et BiochimieUniversité de MonctonMonctonNew BrunswickCanada
- New Brunswick Center for Precision MedicineMonctonNew BrunswickCanada
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Wang F, Jin T, Li H, Long H, Liu Y, Jin S, Lu Y, Peng Y, Liu C, Zhao L, Wang X. Cannabidivarin alleviates α-synuclein aggregation via DAF-16 in Caenorhabditis elegans. FASEB J 2023; 37:e22735. [PMID: 36583706 DOI: 10.1096/fj.202200278rr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 12/12/2022] [Accepted: 12/14/2022] [Indexed: 12/31/2022]
Abstract
Cannabidivarin (CBDV), a structural analog of cannabidiol (CBD), has received attention in recent years owing to its anticonvulsant property and potential for treating autism spectrum disorder. However, the function and mechanism of CBDV involved in the progression of Parkinson's disease (PD) remain unclear. In this work, we found that CBDV inhibited α-synuclein (α-syn) aggregation in an established transgenetic Caenorhabditis elegans (C. elegans). The phenolic hydroxyl groups of CBDV are critical for scavenging reactive oxygen species (ROS), reducing the in vivo aggregation of α-syn and preventing DAergic neurons from 6-hydroxydopamine (6-OHDA)-induced injury and degeneration. By combining multiple biophysical approaches, including nuclear magnetic resonance spectrometry, transmission electron microscopy and fibrillation kinetics assays, we confirmed that CBDV does not directly interact with α-syn or inhibit the formation of α-syn fibrils in vitro. Further cellular signaling investigation showed that the ability of CBDV to prevent oxidative stress, the accumulation of α-syn and the degeneration of DAergic neurons was mediated by DAF-16 in the worms. This study demonstrates that CBDV alleviates the aggregation of α-syn in vivo and reveals that the phenolic hydroxyl groups of CBDV are critical for this activity, providing a potential for the development of CBDV as a drug candidate for PD therapeutics.
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Affiliation(s)
- Fangru Wang
- College of Life Science and Technology, Changchun University of Science and Technology, Changchun, China
| | - Ting Jin
- College of Life Science and Technology, Changchun University of Science and Technology, Changchun, China
| | - Hongyuan Li
- Laboratory of Chemical Biology, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
| | - Houfang Long
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Ying Liu
- State Key Laboratory for Molecular Biology of Special Economic Animal, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Sha Jin
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
| | - Yuyuan Lu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
| | - Yinghua Peng
- State Key Laboratory for Molecular Biology of Special Economic Animal, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Cong Liu
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Lihui Zhao
- College of Life Science and Technology, Changchun University of Science and Technology, Changchun, China
| | - Xiaohui Wang
- Laboratory of Chemical Biology, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, China.,Beijing National Laboratory for Molecular Sciences, Beijing, China
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10
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Ravanelli S, Li Q, Annibal A, Trifunovic A, Antebi A, Hoppe T. Reprograming of proteasomal degradation by branched chain amino acid metabolism. Aging Cell 2022; 21:e13725. [PMID: 36168305 PMCID: PMC9741504 DOI: 10.1111/acel.13725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 08/03/2022] [Accepted: 09/09/2022] [Indexed: 12/14/2022] Open
Abstract
Branched-chain amino acid (BCAA) metabolism is a central hub for energy production and regulation of numerous physiological processes. Controversially, both increased and decreased levels of BCAAs are associated with longevity. Using genetics and multi-omics analyses in Caenorhabditis elegans, we identified adaptive regulation of the ubiquitin-proteasome system (UPS) in response to defective BCAA catabolic reactions after the initial transamination step. Worms with impaired BCAA metabolism show a slower turnover of a GFP-based proteasome substrate, which is suppressed by loss-of-function of the first BCAA catabolic enzyme, the branched-chain aminotransferase BCAT-1. The exogenous supply of BCAA-derived carboxylic acids, which are known to accumulate in the body fluid of patients with BCAA metabolic disorders, is sufficient to regulate the UPS. The link between BCAA intermediates and UPS function presented here sheds light on the unexplained role of BCAAs in the aging process and opens future possibilities for therapeutic interventions.
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Affiliation(s)
- Sonia Ravanelli
- Institute for GeneticsUniversity of CologneCologneGermany,Cologne Excellence Cluster on Cellular Stress Responses in Aging‐Associated Diseases (CECAD)University of CologneCologneGermany
| | - Qiaochu Li
- Institute for GeneticsUniversity of CologneCologneGermany,Cologne Excellence Cluster on Cellular Stress Responses in Aging‐Associated Diseases (CECAD)University of CologneCologneGermany
| | - Andrea Annibal
- Max Planck Institute for Biology of AgeingCologneGermany
| | - Aleksandra Trifunovic
- Cologne Excellence Cluster on Cellular Stress Responses in Aging‐Associated Diseases (CECAD)University of CologneCologneGermany,Center for Molecular Medicine Cologne (CMMC)University of CologneCologneGermany,Institute for Mitochondrial Diseases and Ageing, Medical FacultyUniversity of CologneCologneGermany
| | - Adam Antebi
- Cologne Excellence Cluster on Cellular Stress Responses in Aging‐Associated Diseases (CECAD)University of CologneCologneGermany,Max Planck Institute for Biology of AgeingCologneGermany
| | - Thorsten Hoppe
- Institute for GeneticsUniversity of CologneCologneGermany,Cologne Excellence Cluster on Cellular Stress Responses in Aging‐Associated Diseases (CECAD)University of CologneCologneGermany,Center for Molecular Medicine Cologne (CMMC)University of CologneCologneGermany
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11
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Zhang J, He L, Wang A, Wu B, Zhang P, Zhu Y, Jiang Y, Bai J, Xiao X. Responses of bitter melon saponins to oxidative stress and aging via the IIS pathway linked with sir-2.1 and hlh-30. J Food Biochem 2022; 46:e14456. [PMID: 36226991 DOI: 10.1111/jfbc.14456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 09/07/2022] [Accepted: 09/20/2022] [Indexed: 01/14/2023]
Abstract
Saponins from bitter melon (BMS) exert potential bioactivities and pharmacological activities, including anti-oxidation and lifespan extension. However, the exact mechanisms of BMS in response to oxidative stress remain unknown. Results demonstrated that bitter melon saponins could strengthen locomotive activities (body bend and head thrashing) accompanied by delaying the muscle fiber damage with age in Caenorhabditis elegans. In addition, BMS inhibited the ROS accumulation, improved the activities of antioxidant enzymes like SOD (by 57.90% and 94.34% for 100 μg/ml and 200 μg/ml BMS, respectively) and CAT (by 51.45% and 56.91% for 100 μg/ml and 200 μg/ml BMS, respectively), and extend the lifespan of N2 and CL2006 worms under paraquat-induced oxidative stress. Mechanism study suggested that BMS modulated the mRNA expressions of oxidation-related regulators, like the upregulation of cat-1, hsf-1, sir-2.1, and hlh-30. Furthermore, gene-deficient mutants verified that IIS (insulin/insulin-like growth factor-1 signaling) pathway linked with sir-2.1 and hlh-30 factors were involved in the BMS's lifespan-extension effects under oxidative stress. In general, this study supplemented the explanation of BMS in promoting oxidation-resistance and lifespan-extension activities, which could be served as a potential candidate for anti-aging. PRACTICAL APPLICATIONS: Our previous studies have suggested that saponins from bitter melon exhibited fat-lowering activity in C. elegans. However, little was known about the mechanism underlying the anti-oxidation effects of BMS in C. elegans. Current results indicated that the IIS pathway linked with sir-2.1 and hlh-30 transcriptional factors jointly to increase the lifespan in BMS' responses to oxidative stress. Our findings are beneficial to understand the main nutritional ingredients in bitter melon, which are ideal and expected in functional foods for aging.
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Affiliation(s)
- Jinfu Zhang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Linzhao He
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Anlin Wang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Beiqi Wu
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Peixi Zhang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Ying Zhu
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Ya Jiang
- Jiangsu Jiangnan Biotechnology Co. LTD, Zhenjiang, China
| | - Juan Bai
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China.,Jiangsu Jiangnan Biotechnology Co. LTD, Zhenjiang, China
| | - Xiang Xiao
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China.,Jiangsu Jiangnan Biotechnology Co. LTD, Zhenjiang, China
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12
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Raj V, Thekkuveettil A. Dopamine plays a critical role in the olfactory adaptive learning pathway in Caenorhabditis elegans. J Neurosci Res 2022; 100:2028-2043. [PMID: 35906758 DOI: 10.1002/jnr.25112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 06/26/2022] [Accepted: 07/16/2022] [Indexed: 11/11/2022]
Abstract
Encoding and consolidating information through learning and memory is vital in adaptation and survival. Dopamine (DA) is a critical neurotransmitter that modulates behavior. However, the role of DA in learning and memory processes is not well defined. Herein, we used the olfactory adaptive learning paradigm in Caenorhabditis elegans to elucidate the role of DA in the memory pathway. Cat-2 mutant worms with low DA synthesis showed a significant reduction in chemotaxis index (CI) compared to the wild type (WT) after short-term conditioning. In dat-1::ICE worms, having degeneration of DA neurons, there was a significant reduction in adaptive learning and memory. When the worms were trained in the presence of exogenous DA (10 mM) instead of food, a substantial increase in CI value was observed. Furthermore, our results suggest that both dop-1 and dop-3 DA receptors are involved in memory retention. The release of DA during conditioning is essential to initiate the learning pathway. We also noted an enhanced cholinergic receptor activity in the absence of dopaminergic neurons. The strains expressing GCaMP6 in DA neurons (pdat-1::GCaMP-6::mCherry) showed a rise in intracellular calcium influx in the presence of the conditional stimulus after training, suggesting DA neurons are activated during memory recall. These results reveal the critical role of DA in adaptive learning and memory, indicating that DA neurons play a crucial role in the effective processing of cognitive function.
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Affiliation(s)
- Vishnu Raj
- Division of Molecular Medicine, Sree Chitra Tirunal Institute for Medical Sciences and Technology, BMT Wing, Trivandrum, India
| | - Anoopkumar Thekkuveettil
- Division of Molecular Medicine, Sree Chitra Tirunal Institute for Medical Sciences and Technology, BMT Wing, Trivandrum, India
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13
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Piazzesi A, Wang Y, Jackson J, Wischhof L, Zeisler-Diehl V, Scifo E, Oganezova I, Hoffmann T, Gómez Martín P, Bertan F, Wrobel CJJ, Schroeder FC, Ehninger D, Händler K, Schultze JL, Schreiber L, van Echten-Deckert G, Nicotera P, Bano D. CEST-2.2 overexpression alters lipid metabolism and extends longevity of mitochondrial mutants. EMBO Rep 2022; 23:e52606. [PMID: 35297148 PMCID: PMC9066074 DOI: 10.15252/embr.202152606] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 02/14/2022] [Accepted: 02/22/2022] [Indexed: 12/17/2022] Open
Abstract
Mitochondrial dysfunction can either extend or decrease Caenorhabditis elegans lifespan, depending on whether transcriptionally regulated responses can elicit durable stress adaptation to otherwise detrimental lesions. Here, we test the hypothesis that enhanced metabolic flexibility is sufficient to circumvent bioenergetic abnormalities associated with the phenotypic threshold effect, thereby transforming short‐lived mitochondrial mutants into long‐lived ones. We find that CEST‐2.2, a carboxylesterase mainly localizes in the intestine, may stimulate the survival of mitochondrial deficient animals. We report that genetic manipulation of cest‐2.2 expression has a minor lifespan impact on wild‐type nematodes, whereas its overexpression markedly extends the lifespan of complex I‐deficient gas‐1(fc21) mutants. We profile the transcriptome and lipidome of cest‐2.2 overexpressing animals and show that CEST‐2.2 stimulates lipid metabolism and fatty acid beta‐oxidation, thereby enhancing mitochondrial respiratory capacity through complex II and LET‐721/ETFDH, despite the inherited genetic lesion of complex I. Together, our findings unveil a metabolic pathway that, through the tissue‐specific mobilization of lipid deposits, may influence the longevity of mitochondrial mutant C. elegans.
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Affiliation(s)
- Antonia Piazzesi
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Yiru Wang
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Joshua Jackson
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Lena Wischhof
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | | | - Enzo Scifo
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Ina Oganezova
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Thorben Hoffmann
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | | | - Fabio Bertan
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Chester J J Wrobel
- Boyce Thompson Institute and Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, USA
| | - Frank C Schroeder
- Boyce Thompson Institute and Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, USA
| | - Dan Ehninger
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Kristian Händler
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany.,PRECISE Platform for Single Cell Genomics and Epigenomics, German Center for Neurodegenerative Diseases (DZNE), University of Bonn, Bonn, Germany
| | - Joachim L Schultze
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany.,PRECISE Platform for Single Cell Genomics and Epigenomics, German Center for Neurodegenerative Diseases (DZNE), University of Bonn, Bonn, Germany.,Department for Genomics and Immunoregulation, LIMES Institute, University of Bonn, Bonn, Germany
| | - Lukas Schreiber
- Institute of Cellular and Molecular Botany (IZMB), University of Bonn, Bonn, Germany
| | | | | | - Daniele Bano
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
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14
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Ogawa T, Masumura K, Kohara Y, Kanai M, Soga T, Ohya Y, Blackwell TK, Mizunuma M. S-adenosyl-L-homocysteine extends lifespan through methionine restriction effects. Aging Cell 2022; 21:e13604. [PMID: 35388610 PMCID: PMC9124299 DOI: 10.1111/acel.13604] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 03/01/2022] [Accepted: 03/10/2022] [Indexed: 01/18/2023] Open
Abstract
Methionine restriction (MetR) can extend lifespan and delay the onset of aging-associated pathologies in most model organisms. Previously, we showed that supplementation with the metabolite S-adenosyl-L-homocysteine (SAH) extends lifespan and activates the energy sensor AMP-activated protein kinase (AMPK) in the budding yeast Saccharomyces cerevisiae. However, the mechanism involved and whether SAH can extend metazoan lifespan have remained unknown. Here, we show that SAH supplementation reduces Met levels and recapitulates many physiological and molecular effects of MetR. In yeast, SAH supplementation leads to inhibition of the target of rapamycin complex 1 (TORC1) and activation of autophagy. Furthermore, in Caenorhabditis elegans SAH treatment extends lifespan by activating AMPK and providing benefits of MetR. Therefore, we propose that SAH can be used as an intervention to lower intracellular Met and confer benefits of MetR.
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Affiliation(s)
- Takafumi Ogawa
- Unit of BiotechnologyGraduate School of Integrated Sciences for LifeHiroshima UniversityHigashi‐HiroshimaJapan,Hiroshima Research Center for Healthy Aging (HiHA)Hiroshima UniversityHigashi‐HiroshimaJapan,Joslin Diabetes CenterHarvard Stem Cell Institute, and Harvard Medical School Department of GeneticsBostonMassachusettsUSA
| | - Koji Masumura
- Unit of BiotechnologyGraduate School of Integrated Sciences for LifeHiroshima UniversityHigashi‐HiroshimaJapan
| | - Yuki Kohara
- Unit of BiotechnologyGraduate School of Integrated Sciences for LifeHiroshima UniversityHigashi‐HiroshimaJapan
| | - Muneyoshi Kanai
- National Research Institute of BrewingHigashi‐HiroshimaJapan
| | - Tomoyoshi Soga
- Institute for Advanced BiosciencesKeio UniversityTsuruokaJapan
| | - Yoshikazu Ohya
- Department of Integrated BiosciencesGraduate School of Frontier SciencesThe University of TokyoKashiwaJapan
| | - T. Keith Blackwell
- Joslin Diabetes CenterHarvard Stem Cell Institute, and Harvard Medical School Department of GeneticsBostonMassachusettsUSA
| | - Masaki Mizunuma
- Unit of BiotechnologyGraduate School of Integrated Sciences for LifeHiroshima UniversityHigashi‐HiroshimaJapan,Hiroshima Research Center for Healthy Aging (HiHA)Hiroshima UniversityHigashi‐HiroshimaJapan
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15
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Xiao Y, Liu F, Kong Q, Zhu X, Wang H, Li S, Jiang N, Yu C, Yun L. Metformin induces S-adenosylmethionine restriction to extend the Caenorhabditis elegans healthspan through H3K4me3 modifiers. Aging Cell 2022; 21:e13567. [PMID: 35146893 PMCID: PMC8920454 DOI: 10.1111/acel.13567] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 01/12/2022] [Accepted: 01/26/2022] [Indexed: 01/14/2023] Open
Abstract
Metformin, a widely prescribed first‐line drug for the treatment of type II diabetes mellitus, has been shown to extend lifespan and delay the onset of age‐related diseases. The precisely mechanisms by which these effects are realized remain elusive. We find that metformin exposure is restricted to adults, which is sufficient to extend lifespan. However, limiting metformin exposure to the larvae has no significant effect on Caenorhabditis elegans longevity. Here, we show that after metformin treatment, the level of S‐adenosylmethionine (SAM) is reduced in adults but not in the larvae. Potential mechanisms by which reduced SAM might increase lifespan include altering the histone methylation. However, the molecular connections between metformin, SAM limitation, methyltransferases, and healthspan‐associated phenotypes are unclear. Through genetic screening of C. elegans, we find that metformin promotes the healthspan through an H3K4 methyltransferase/demethylase complex to downregulate the targets, including mTOR and S6 kinase. Thus, our studies provide molecular links between meformin, SAM limitation, histone methylation, and healthspan and elucidate the mode action of metformin‐regulated healthspan extension will boost its therapeutic application in the treatment of human aging and age‐related diseases.
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Affiliation(s)
- Yi Xiao
- Institute of life sciences Zunyi Medical University Zunyi China
- Guizhou Provincial College‐based Key Lab for Tumor Prevention and Treatment with Distinctive Medicines Zunyi Medical University Zunyi China
- College of Basic Medicine Zunyi Medical University Zunyi China
| | - Fang Liu
- College of Basic Medicine Zunyi Medical University Zunyi China
| | - Qinghong Kong
- Institute of life sciences Zunyi Medical University Zunyi China
- Guizhou Provincial College‐based Key Lab for Tumor Prevention and Treatment with Distinctive Medicines Zunyi Medical University Zunyi China
| | - Xinting Zhu
- Guizhou Provincial College‐based Key Lab for Tumor Prevention and Treatment with Distinctive Medicines Zunyi Medical University Zunyi China
- College of Basic Medicine Zunyi Medical University Zunyi China
| | - Haijuan Wang
- Guizhou Provincial College‐based Key Lab for Tumor Prevention and Treatment with Distinctive Medicines Zunyi Medical University Zunyi China
- College of Basic Medicine Zunyi Medical University Zunyi China
| | - Sanhua Li
- Institute of life sciences Zunyi Medical University Zunyi China
- Guizhou Provincial College‐based Key Lab for Tumor Prevention and Treatment with Distinctive Medicines Zunyi Medical University Zunyi China
| | - Nian Jiang
- Institute of life sciences Zunyi Medical University Zunyi China
- Guizhou Provincial College‐based Key Lab for Tumor Prevention and Treatment with Distinctive Medicines Zunyi Medical University Zunyi China
| | - Changyan Yu
- Institute of life sciences Zunyi Medical University Zunyi China
- Guizhou Provincial College‐based Key Lab for Tumor Prevention and Treatment with Distinctive Medicines Zunyi Medical University Zunyi China
| | - Liu Yun
- Institute of life sciences Zunyi Medical University Zunyi China
- Guizhou Provincial College‐based Key Lab for Tumor Prevention and Treatment with Distinctive Medicines Zunyi Medical University Zunyi China
- College of Basic Medicine Zunyi Medical University Zunyi China
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16
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Knupp D, Jorgensen BG, Alshareef HZ, Bhat JM, Grubbs JJ, Miura P, van der Linden AM. Loss of circRNAs from the crh-1 gene extends the mean lifespan in Caenorhabditis elegans. Aging Cell 2022; 21:e13560. [PMID: 35102684 PMCID: PMC8844124 DOI: 10.1111/acel.13560] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 12/03/2021] [Accepted: 01/11/2022] [Indexed: 12/01/2022] Open
Abstract
Accumulation of circular RNAs (circRNAs) during aging occurs on a genome‐wide level for multiple organisms, but its significance is unknown. Generating circRNA loss‐of‐function mutants is difficult because the vast majority of these RNAs are comprised of exons shared with protein‐coding mRNAs. In Caenorhabditis elegans, most circRNAs were previously found to accumulate during aging. Two of the most abundant, age‐accumulating circRNAs are generated from exon 4 of the crh‐1 gene (circ‐crh‐1). Here, we found that the biogenesis of circ‐crh‐1 was regulated by the double‐stranded RNA‐binding protein ADR‐1. We identified Reverse Complementary Match (RCM) sequences in introns flanking circ‐crh‐1. Using CRISPR‐Cas9, we deleted the downstream RCM and found that this completely eliminated expression of the circRNA without affecting linear mRNA expression from the crh‐1 gene. Remarkably, worms lacking circ‐crh‐1 exhibited a significantly longer mean lifespan. Lifespan was partially restored to wild type by expression of circ‐crh‐1 in neural tissues. Widespread transcriptome alterations in circ‐crh‐1 mutants were identified using RNA‐Seq. Moving forward, intronic RCM deletion using CRISPR should be a widely applicable method to identify lifespan‐regulating circRNAs in C. elegans.
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Affiliation(s)
- David Knupp
- Department of Biology University of Nevada, Reno Reno Nevada USA
| | | | | | - Jaffar M. Bhat
- Department of Biology University of Nevada, Reno Reno Nevada USA
| | - Jeremy J. Grubbs
- Department of Biology University of Nevada, Reno Reno Nevada USA
| | - Pedro Miura
- Department of Biology University of Nevada, Reno Reno Nevada USA
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17
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Tang X, Zhao Y, Liu Y, Liu Y, Liu Y, Niu F, Fang F. 3,6'-disinapoyl sucrose attenuates Aβ 1-42 - induced neurotoxicity in Caenorhabditis elegans by enhancing antioxidation and regulating autophagy. J Cell Mol Med 2022; 26:1024-1033. [PMID: 35044105 PMCID: PMC8831957 DOI: 10.1111/jcmm.17153] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 12/09/2021] [Accepted: 12/10/2021] [Indexed: 02/06/2023] Open
Abstract
The aggregation of β‐amyloid (Aβ) has the neurotoxicity, which is thought to play critical role in the pathogenesis of Alzheimer's disease (AD). Inhibiting Aβ deposition and neurotoxicity has been considered as an important strategy for AD treatment. 3,6'‐Disinapoyl sucrose (DISS), one of the oligosaccharide esters derived from traditional Chinese medicine Polygalae Radix, possesses antioxidative activity, neuroprotective effect and anti‐depressive activity. This study was to explore whether DISS could attenuate the pathological changes of Aβ1‐42 transgenic Caenorhabditis elegans (C. elegans). The results showed that DISS (5 and 50 μM) treatment significantly prolonged the life span, increased the number of egg‐laying, reduced paralysis rate, decreased the levels of lipofuscin and ROS and attenuated Aβ deposition in Aβ1‐42 transgenic C. elegans. Gene analysis showed that DISS could up‐regulate the mRNA expression of sod‐3, gst‐4, daf‐16, bec‐1 and lgg‐1, while down‐regulate the mRNA expression of daf‐2 and daf‐15 in Aβ1‐42 transgenic C. elegans. These results suggested that DISS has the protective effect against Aβ1‐42‐induced pathological damages and prolongs the life span of C. elegans, which may be related to the reduction of Aβ deposition and neurotoxicity by regulating expression of genes related to antioxidation and autophagy.
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Affiliation(s)
- Xiaoli Tang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Yuming Zhao
- Department of Pharmacology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Yanan Liu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Yang Liu
- State Key Lab for Structural Chemistry of Unstable and Stable Species, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
| | - Yue Liu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Fenxi Niu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Fang Fang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
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18
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Tamagno WA, Santini W, Dos Santos A, Alves C, Bilibio D, Sutorillo NT, Zamberlan DC, Kaizer RR, Barcellos LJG. Pitaya fruit extract ameliorates the healthspan on copper-induced toxicity of Caenorhabditis elegans. J Food Biochem 2022; 46:e14050. [PMID: 34981523 DOI: 10.1111/jfbc.14050] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 10/10/2021] [Accepted: 11/26/2021] [Indexed: 12/19/2022]
Abstract
Copper (Cu) is an essential metal and it is important for metabolism. However, in high concentrations, it becomes toxic. Metal-induced toxicity is the cause of many neurodegenerative diseases. So it is necessary to search mechanisms to find ways of healthy aging. Natural compounds and diets based on fruits are increasingly common and could lead to a healthy life. Pitaya (Hylocereus undatus) is a tropical and Latin American, fruit that is gaining more popularity due to its antioxidant properties. Here, we evaluate the preventive and curative effect of different doses of microencapsulated pulp H. undatus extract on copper-induced toxicity. For this we use the nematode Caenorhabditis elegans, to investigate the effects of pitaya extract on behavior, lipid peroxidation, antioxidant chaperon, and cholinergic nervous system (ColNS). Results showed behavioral changes, decreased cell death biomarkers, and lipid peroxidation caused by copper, and these toxic effects were prevented and reverted by Pitaya's extract. After all, the extract can be used in diet as a supplement and studied to treat or prevent specific diseases, some of them linked to contamination and senility-related conditions. PRACTICAL APPLICATIONS: This research has been aimed to provide the uses of Hylocereus undatus microencapsulated pulp extract for the prevention and treatment of copper-induced toxicity. We have been shown that Pitaya is a good source of antioxidant compounds that can ameliorate the antioxidant system as well as the cholinergic nervous system avoiding behavior changes before and after the metal toxicity of copper. Therefore, the potential applications and common use of this extract can serve as food supplementation to prevent metal oxidative damage as well as to repair clinical cases of copper poisoning.
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Affiliation(s)
- Wagner Antonio Tamagno
- Biochemistry and Molecular Biology Laboratory, Federal Institute of Education, Science, and Technology of Rio Grande do Sul, Sertão, Rio Grande do Sul, Brazil
| | - Wallace Santini
- Biochemistry and Molecular Biology Laboratory, Federal Institute of Education, Science, and Technology of Rio Grande do Sul, Sertão, Rio Grande do Sul, Brazil
| | - Amanda Dos Santos
- Biochemistry and Molecular Biology Laboratory, Federal Institute of Education, Science, and Technology of Rio Grande do Sul, Sertão, Rio Grande do Sul, Brazil
| | - Carla Alves
- Biochemistry and Molecular Biology Laboratory, Federal Institute of Education, Science, and Technology of Rio Grande do Sul, Sertão, Rio Grande do Sul, Brazil.,Graduate Program in Bioexperimentation, Universidade de Passo Fundo, São José, Passo Fundo, Brazil
| | - Denise Bilibio
- Biochemistry and Molecular Biology Laboratory, Federal Institute of Education, Science, and Technology of Rio Grande do Sul, Sertão, Rio Grande do Sul, Brazil
| | - Nathália Tafarel Sutorillo
- Biochemistry and Molecular Biology Laboratory, Federal Institute of Education, Science, and Technology of Rio Grande do Sul, Sertão, Rio Grande do Sul, Brazil
| | - Daniele Coradini Zamberlan
- Biochemistry and Molecular Biology Department, Center of Natural and Exacts Science, Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Rosilene Rodrigues Kaizer
- Biochemistry and Molecular Biology Laboratory, Federal Institute of Education, Science, and Technology of Rio Grande do Sul, Sertão, Rio Grande do Sul, Brazil.,Graduate Program in Environmental Science and Technology, Federal University of Fronteira Sul (UFFS) - Erechim Campus, Erechim, Rio Grande do Sul, Brazil
| | - Leonardo José Gil Barcellos
- Graduate Program in Bioexperimentation, Universidade de Passo Fundo, São José, Passo Fundo, Brazil.,Graduate Program in Pharmacology, Universidade Federal de Santa Maria, Cidade Universitária, Camobi, Santa Maria, Brazil
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19
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Nair T, Chakraborty R, Singh P, Rahman SS, Bhaskar AK, Sengupta S, Mukhopadhyay A. Adaptive capacity to dietary Vitamin B12 levels is maintained by a gene-diet interaction that ensures optimal life span. Aging Cell 2022; 21:e13518. [PMID: 35032420 PMCID: PMC8761004 DOI: 10.1111/acel.13518] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 10/16/2021] [Accepted: 11/02/2021] [Indexed: 11/28/2022] Open
Abstract
Diet regulates complex life-history traits such as longevity. For optimal lifespan, organisms employ intricate adaptive mechanisms whose molecular underpinnings are less known. We show that Caenorhabditis elegans FLR-4 kinase prevents lifespan differentials on the bacterial diet having higher Vitamin B12 levels. The flr-4 mutants are more responsive to the higher B12 levels of Escherichia coli HT115 diet, and consequently, have enhanced flux through the one-carbon cycle. Mechanistically, a higher level of B12 transcriptionally downregulates the phosphoethanolamine methyltransferase pmt-2 gene, which modulates phosphatidylcholine (PC) levels. Pmt-2 downregulation activates cytoprotective gene expression through the p38-MAPK pathway, leading to increased lifespan only in the mutant. Evidently, preventing bacterial B12 uptake or inhibiting one-carbon metabolism reverses all the above phenotypes. Conversely, supplementation of B12 to E. coli OP50 or genetically reducing PC levels in the OP50-fed mutant extends lifespan. Together, we reveal how worms maintain adaptive capacity to diets having varying micronutrient content to ensure a normal lifespan.
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Affiliation(s)
- Tripti Nair
- Molecular Aging LaboratoryNational Institute of ImmunologyNew DelhiIndia
| | - Rahul Chakraborty
- CSIR‐Institute of Genomics and Integrative BiologyNew DelhiIndia
- Academy of Scientific and Innovative Research (AcSIR)GhaziabadIndia
| | - Praveen Singh
- CSIR‐Institute of Genomics and Integrative BiologyNew DelhiIndia
- Academy of Scientific and Innovative Research (AcSIR)GhaziabadIndia
| | | | - Akash Kumar Bhaskar
- CSIR‐Institute of Genomics and Integrative BiologyNew DelhiIndia
- Academy of Scientific and Innovative Research (AcSIR)GhaziabadIndia
| | | | - Arnab Mukhopadhyay
- Molecular Aging LaboratoryNational Institute of ImmunologyNew DelhiIndia
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20
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van Sluijs L, Liu J, Schrama M, van Hamond S, Vromans SPJM, Scholten MH, Žibrat N, Riksen JAG, Pijlman GP, Sterken MG, Kammenga JE. Virus infection modulates male sexual behaviour in Caenorhabditis elegans. Mol Ecol 2021; 30:6776-6790. [PMID: 34534386 PMCID: PMC9291463 DOI: 10.1111/mec.16179] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 08/23/2021] [Accepted: 09/07/2021] [Indexed: 12/28/2022]
Abstract
Mating dynamics follow from natural selection on mate choice and individuals maximizing their reproductive success. Mate discrimination reveals itself by a plethora of behaviours and morphological characteristics, each of which can be affected by pathogens. A key question is how pathogens affect mate choice and outcrossing behaviour. Here we investigated the effect of Orsay virus on the mating dynamics of the androdiecious (male and hermaphrodite) nematode Caenorhabditis elegans. We tested genetically distinct strains and found that viral susceptibility differed between sexes in a genotype-dependent manner with males of reference strain N2 being more resistant than hermaphrodites. Males displayed a constitutively higher expression of intracellular pathogen response (IPR) genes, whereas the antiviral RNAi response did not have increased activity in males. Subsequent monitoring of sex ratios over 10 generations revealed that viral presence can change mating dynamics in isogenic populations. Sexual attraction assays showed that males preferred mating with uninfected rather than infected hermaphrodites. Together our results illustrate for the first time that viral infection can significantly affect male mating choice and suggest altered mating dynamics as a novel cause benefitting outcrossing under pathogenic stress conditions in C. elegans.
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Affiliation(s)
- Lisa van Sluijs
- Laboratory of NematologyWageningen University and ResearchWageningenthe Netherlands
- Laboratory of VirologyWageningen University and ResearchWageningenthe Netherlands
| | - Jie Liu
- Laboratory of NematologyWageningen University and ResearchWageningenthe Netherlands
| | - Mels Schrama
- Laboratory of NematologyWageningen University and ResearchWageningenthe Netherlands
| | - Sanne van Hamond
- Laboratory of NematologyWageningen University and ResearchWageningenthe Netherlands
| | | | - Marèl H. Scholten
- Laboratory of NematologyWageningen University and ResearchWageningenthe Netherlands
| | - Nika Žibrat
- Laboratory of NematologyWageningen University and ResearchWageningenthe Netherlands
| | - Joost A. G. Riksen
- Laboratory of NematologyWageningen University and ResearchWageningenthe Netherlands
| | - Gorben P. Pijlman
- Laboratory of VirologyWageningen University and ResearchWageningenthe Netherlands
| | - Mark G. Sterken
- Laboratory of NematologyWageningen University and ResearchWageningenthe Netherlands
| | - Jan E. Kammenga
- Laboratory of NematologyWageningen University and ResearchWageningenthe Netherlands
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21
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Ryan KC, Ashkavand Z, Sarasija S, Laboy JT, Samarakoon R, Norman KR. Increased mitochondrial calcium uptake and concomitant mitochondrial activity by presenilin loss promotes mTORC1 signaling to drive neurodegeneration. Aging Cell 2021; 20:e13472. [PMID: 34499406 PMCID: PMC8520713 DOI: 10.1111/acel.13472] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 06/21/2021] [Accepted: 08/05/2021] [Indexed: 12/21/2022] Open
Abstract
Metabolic dysfunction and protein aggregation are common characteristics that occur in age‐related neurodegenerative disease. However, the mechanisms underlying these abnormalities remain poorly understood. We have found that mutations in the gene encoding presenilin in Caenorhabditis elegans, sel‐12, results in elevated mitochondrial activity that drives oxidative stress and neuronal dysfunction. Mutations in the human presenilin genes are the primary cause of familial Alzheimer's disease. Here, we demonstrate that loss of SEL‐12/presenilin results in the hyperactivation of the mTORC1 pathway. This hyperactivation is caused by elevated mitochondrial calcium influx and, likely, the associated increase in mitochondrial activity. Reducing mTORC1 activity improves proteostasis defects and neurodegenerative phenotypes associated with loss of SEL‐12 function. Consistent with high mTORC1 activity, we find that SEL‐12 loss reduces autophagosome formation, and this reduction is prevented by limiting mitochondrial calcium uptake. Moreover, the improvements of proteostasis and neuronal defects in sel‐12 mutants due to mTORC1 inhibition require the induction of autophagy. These results indicate that mTORC1 hyperactivation exacerbates the defects in proteostasis and neuronal function in sel‐12 mutants and demonstrate a critical role of presenilin in promoting neuronal health.
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Affiliation(s)
- Kerry C. Ryan
- Department of Regenerative and Cancer Cell Biology Albany Medical College Albany New York USA
| | - Zahra Ashkavand
- Department of Regenerative and Cancer Cell Biology Albany Medical College Albany New York USA
| | - Shaarika Sarasija
- Department of Regenerative and Cancer Cell Biology Albany Medical College Albany New York USA
| | - Jocelyn T. Laboy
- Department of Regenerative and Cancer Cell Biology Albany Medical College Albany New York USA
| | - Rohan Samarakoon
- Department of Regenerative and Cancer Cell Biology Albany Medical College Albany New York USA
| | - Kenneth R. Norman
- Department of Regenerative and Cancer Cell Biology Albany Medical College Albany New York USA
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22
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Chowdhury MI, Sana T, Panneerselvan L, Dharmarajan R, Megharaj M. Acute Toxicity and Transgenerational Effects of Perfluorobutane Sulfonate on Caenorhabditis elegans. Environ Toxicol Chem 2021; 40:1973-1982. [PMID: 33792982 DOI: 10.1002/etc.5055] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 12/03/2020] [Accepted: 03/29/2021] [Indexed: 06/12/2023]
Abstract
Perfluorobutane sulfonate (PFBS), due to its increasing use as an alternative to perfluooctane sulfonate (PFOS), is widely detected in humans and the environment, necessitating the evaluation of its potential ecotoxicological risk. We assessed the toxicity and bioaccumulation potential of PFBS in Caenorhabditis elegans, using lethality, locomotion, reproduction, life span, growth, and chemotactic behavior as the effect parameters. In addition, a total of 6 generations of exposed parent animals were monitored for locomotion, brood, and life span behaviors. Life span and brood size were significantly reduced in parent nematodes (P0) following exposure to ≥0.1 mM PFBS, but these negative effects did not transfer to the progeny. Although there was no remarkable effect on reproduction and life span in parent worms exposed to ≤0.01 mM PFBS, multigenerational exposure at 0.0005 mM significantly affected the F4 and F5 progeny. Furthermore, 0.01 to 2.0 mM of PFBS substantially retarded the locomotion behavior of P0 worms. At higher concentrations such as 1.0 mM, this negative effect on locomotion was transferred to the next generation (F1) but later recovered from F2 progeny onward. Our findings demonstrate for the first time that chronic exposure to PFBS at higher concentrations can cause behavioral toxicity and could be transferred to the progeny. These findings have significant implications for the environmental risk assessment of PFBS. Environ Toxicol Chem 2021;40:1973-1982. © 2021 SETAC.
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Affiliation(s)
- Manjurul Islam Chowdhury
- Global Centre for Environmental Remediation, College of Engineering, Science and Environment, University of Newcastle, Callaghan, New South Wales, Australia
| | - Tanmoy Sana
- Global Centre for Environmental Remediation, College of Engineering, Science and Environment, University of Newcastle, Callaghan, New South Wales, Australia
| | - Logeshwaran Panneerselvan
- Global Centre for Environmental Remediation, College of Engineering, Science and Environment, University of Newcastle, Callaghan, New South Wales, Australia
- Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, University of Newcastle, Callaghan, New South Wales, Australia
| | - Rajarathnam Dharmarajan
- Global Centre for Environmental Remediation, College of Engineering, Science and Environment, University of Newcastle, Callaghan, New South Wales, Australia
- Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, University of Newcastle, Callaghan, New South Wales, Australia
| | - Mallavarapu Megharaj
- Global Centre for Environmental Remediation, College of Engineering, Science and Environment, University of Newcastle, Callaghan, New South Wales, Australia
- Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, University of Newcastle, Callaghan, New South Wales, Australia
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23
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Zhao Z, Fan R, Xu W, Kou Y, Wang Y, Ma X, Du Z. Single-cell dynamics of chromatin activity during cell lineage differentiation in Caenorhabditis elegans embryos. Mol Syst Biol 2021; 17:e10075. [PMID: 33900055 PMCID: PMC8073016 DOI: 10.15252/msb.202010075] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 03/22/2021] [Accepted: 03/23/2021] [Indexed: 11/09/2022] Open
Abstract
Elucidating the chromatin dynamics that orchestrate embryogenesis is a fundamental question in developmental biology. Here, we exploit position effects on expression as an indicator of chromatin activity and infer the chromatin activity landscape in every lineaged cell during Caenorhabditis elegans early embryogenesis. Systems-level analyses reveal that chromatin activity distinguishes cellular states and correlates with fate patterning in the early embryos. As cell lineage unfolds, chromatin activity diversifies in a lineage-dependent manner, with switch-like changes accompanying anterior-posterior fate asymmetry and characteristic landscapes being established in different cell lineages. Upon tissue differentiation, cellular chromatin from distinct lineages converges according to tissue types but retains stable memories of lineage history, contributing to intra-tissue cell heterogeneity. However, the chromatin landscapes of cells organized in a left-right symmetric pattern are predetermined to be analogous in early progenitors so as to pre-set equivalent states. Finally, genome-wide analysis identifies many regions exhibiting concordant chromatin activity changes that mediate the co-regulation of functionally related genes during differentiation. Collectively, our study reveals the developmental and genomic dynamics of chromatin activity at the single-cell level.
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Affiliation(s)
- Zhiguang Zhao
- State Key Laboratory of Molecular Developmental BiologyInstitute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina
- University of Chinese Academy of SciencesBeijingChina
| | - Rong Fan
- State Key Laboratory of Molecular Developmental BiologyInstitute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina
- University of Chinese Academy of SciencesBeijingChina
| | - Weina Xu
- State Key Laboratory of Molecular Developmental BiologyInstitute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina
- University of Chinese Academy of SciencesBeijingChina
| | - Yahui Kou
- State Key Laboratory of Molecular Developmental BiologyInstitute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina
- University of Chinese Academy of SciencesBeijingChina
| | - Yangyang Wang
- State Key Laboratory of Molecular Developmental BiologyInstitute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina
| | - Xuehua Ma
- State Key Laboratory of Molecular Developmental BiologyInstitute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina
| | - Zhuo Du
- State Key Laboratory of Molecular Developmental BiologyInstitute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina
- University of Chinese Academy of SciencesBeijingChina
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24
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Navarro IC, Tuorto F, Jordan D, Legrand C, Price J, Braukmann F, Hendrick AG, Akay A, Kotter A, Helm M, Lyko F, Miska EA. Translational adaptation to heat stress is mediated by RNA 5-methylcytosine in Caenorhabditis elegans. EMBO J 2021; 40:e105496. [PMID: 33283887 PMCID: PMC7957426 DOI: 10.15252/embj.2020105496] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 11/04/2020] [Accepted: 11/10/2020] [Indexed: 12/31/2022] Open
Abstract
Methylation of carbon-5 of cytosines (m5 C) is a post-transcriptional nucleotide modification of RNA found in all kingdoms of life. While individual m5 C-methyltransferases have been studied, the impact of the global cytosine-5 methylome on development, homeostasis and stress remains unknown. Here, using Caenorhabditis elegans, we generated the first organism devoid of m5 C in RNA, demonstrating that this modification is non-essential. Using this genetic tool, we determine the localisation and enzymatic specificity of m5 C sites in the RNome in vivo. We find that NSUN-4 acts as a dual rRNA and tRNA methyltransferase in C. elegans mitochondria. In agreement with leucine and proline being the most frequently methylated tRNA isoacceptors, loss of m5 C impacts the decoding of some triplets of these two amino acids, leading to reduced translation efficiency. Upon heat stress, m5 C loss leads to ribosome stalling at UUG triplets, the only codon translated by an m5 C34-modified tRNA. This leads to reduced translation efficiency of UUG-rich transcripts and impaired fertility, suggesting a role of m5 C tRNA wobble methylation in the adaptation to higher temperatures.
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Affiliation(s)
- Isabela Cunha Navarro
- Gurdon InstituteUniversity of CambridgeCambridgeUK
- Department of GeneticsUniversity of CambridgeCambridgeUK
| | - Francesca Tuorto
- Division of EpigeneticsDKFZ‐ZMBH AllianceGerman Cancer Research CenterHeidelbergGermany
- Division of BiochemistryMannheim Institute for Innate Immunoscience (MI3)Medical Faculty MannheimHeidelberg UniversityMannheimGermany
- Center for Molecular Biology of Heidelberg University (ZMBH)DKFZ‐ZMBH AllianceHeidelbergGermany
| | - David Jordan
- Gurdon InstituteUniversity of CambridgeCambridgeUK
- Department of GeneticsUniversity of CambridgeCambridgeUK
| | - Carine Legrand
- Division of EpigeneticsDKFZ‐ZMBH AllianceGerman Cancer Research CenterHeidelbergGermany
| | - Jonathan Price
- Gurdon InstituteUniversity of CambridgeCambridgeUK
- Department of GeneticsUniversity of CambridgeCambridgeUK
| | - Fabian Braukmann
- Gurdon InstituteUniversity of CambridgeCambridgeUK
- Department of GeneticsUniversity of CambridgeCambridgeUK
| | - Alan G Hendrick
- STORM Therapeutics LimitedBabraham Research CampusCambridgeUK
| | - Alper Akay
- Gurdon InstituteUniversity of CambridgeCambridgeUK
- Department of GeneticsUniversity of CambridgeCambridgeUK
- School of Biological SciencesUniversity of East AngliaNorwichUK
| | - Annika Kotter
- Institute of Pharmacy and BiochemistryJohannes Gutenberg‐University MainzMainzGermany
| | - Mark Helm
- Institute of Pharmacy and BiochemistryJohannes Gutenberg‐University MainzMainzGermany
| | - Frank Lyko
- Division of EpigeneticsDKFZ‐ZMBH AllianceGerman Cancer Research CenterHeidelbergGermany
| | - Eric A Miska
- Gurdon InstituteUniversity of CambridgeCambridgeUK
- Department of GeneticsUniversity of CambridgeCambridgeUK
- Wellcome Sanger InstituteWellcome Genome CampusCambridgeUK
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25
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Meyer DH, Schumacher B. BiT age: A transcriptome-based aging clock near the theoretical limit of accuracy. Aging Cell 2021; 20:e13320. [PMID: 33656257 PMCID: PMC7963339 DOI: 10.1111/acel.13320] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 12/22/2020] [Accepted: 01/12/2021] [Indexed: 12/11/2022] Open
Abstract
Aging clocks dissociate biological from chronological age. The estimation of biological age is important for identifying gerontogenes and assessing environmental, nutritional, or therapeutic impacts on the aging process. Recently, methylation markers were shown to allow estimation of biological age based on age‐dependent somatic epigenetic alterations. However, DNA methylation is absent in some species such as Caenorhabditis elegans and it remains unclear whether and how the epigenetic clocks affect gene expression. Aging clocks based on transcriptomes have suffered from considerable variation in the data and relatively low accuracy. Here, we devised an approach that uses temporal scaling and binarization of C. elegans transcriptomes to define a gene set that predicts biological age with an accuracy that is close to the theoretical limit. Our model accurately predicts the longevity effects of diverse strains, treatments, and conditions. The involved genes support a role of specific transcription factors as well as innate immunity and neuronal signaling in the regulation of the aging process. We show that this binarized transcriptomic aging (BiT age) clock can also be applied to human age prediction with high accuracy. The BiT age clock could therefore find wide application in genetic, nutritional, environmental, and therapeutic interventions in the aging process.
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Affiliation(s)
- David H. Meyer
- Institute for Genome Stability in Ageing and Disease Medical Faculty University of Cologne Cologne Germany
- Cologne Excellence Cluster for Cellular Stress Responses in Ageing‐Associated Diseases (CECAD) Center for Molecular Medicine Cologne (CMMC) University of Cologne Cologne Germany
| | - Björn Schumacher
- Institute for Genome Stability in Ageing and Disease Medical Faculty University of Cologne Cologne Germany
- Cologne Excellence Cluster for Cellular Stress Responses in Ageing‐Associated Diseases (CECAD) Center for Molecular Medicine Cologne (CMMC) University of Cologne Cologne Germany
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26
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Yang L, Liang J, Lam SM, Yavuz A, Shui G, Ding M, Huang X. Neuronal lipolysis participates in PUFA-mediated neural function and neurodegeneration. EMBO Rep 2020; 21:e50214. [PMID: 33034119 PMCID: PMC7645260 DOI: 10.15252/embr.202050214] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 08/26/2020] [Accepted: 09/08/2020] [Indexed: 01/22/2023] Open
Abstract
Lipid droplets (LDs) are dynamic cytoplasmic organelles present in most eukaryotic cells. The appearance of LDs in neurons is not usually observed under physiological conditions, but is associated with neural diseases. It remains unclear how LD dynamics is regulated in neurons and how the appearance of LDs affects neuronal functions. We discovered that mutations of two key lipolysis genes atgl-1 and lid-1 lead to LD appearance in neurons of Caenorhabditis elegans. This neuronal lipid accumulation protects neurons from hyperactivation-triggered neurodegeneration, with a mild decrease in touch sensation. We also discovered that reduced biosynthesis of polyunsaturated fatty acids (PUFAs) causes similar effects and synergizes with decreased lipolysis. Furthermore, we demonstrated that these changes in lipolysis and PUFA biosynthesis increase PUFA partitioning toward triacylglycerol, and reduced incorporation of PUFAs into phospholipids increases neuronal protection. Together, these results suggest the crucial role of neuronal lipolysis in cell-autonomous regulation of neural functions and neurodegeneration.
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Affiliation(s)
- Leilei Yang
- State Key Laboratory of Molecular Developmental BiologyInstitute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina,University of Chinese Academy of SciencesBeijingChina,Present address:
Vector CoreChinese Institute for Brain ResearchBeijingChina
| | - Jingjing Liang
- State Key Laboratory of Molecular Developmental BiologyInstitute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina
| | - Sin Man Lam
- LipidAll Technologies Co., Ltd.ChangzhouChina
| | - Ahmet Yavuz
- Department of Molecular and Human GeneticsHuffington Center on AgingHoward Hughes Medical InstituteBaylor College of MedicineHoustonTXUSA
| | - Guanghou Shui
- State Key Laboratory of Molecular Developmental BiologyInstitute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina,University of Chinese Academy of SciencesBeijingChina
| | - Mei Ding
- State Key Laboratory of Molecular Developmental BiologyInstitute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina,University of Chinese Academy of SciencesBeijingChina
| | - Xun Huang
- State Key Laboratory of Molecular Developmental BiologyInstitute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina,University of Chinese Academy of SciencesBeijingChina
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27
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Abstract
Sarcopenia is the age-related decline in muscle mass and function without any underlying disease. The exact molecular mechanisms responsible for this pathology remain unknown. The use of model organisms, such as mice, rats, flies, and worms, has advanced the field of sarcopenia research by identifying therapeutic strategies and genetic mutations that result in improved muscle mass and function of elderly animals. This review discusses molecular and therapeutic discoveries made using these model organisms and how these animals can be further utilized to better understand sarcopenia pathogenesis. In rodents, flies, and worms, dietary restriction improves muscle performance in old animals. In rodents and worms, exercise and a number of naturally occurring compounds alleviate sarcopenia. Reduction in the insulin/IGF1 receptor pathway, well known to promote longevity, improves sarcopenia in worms and flies. Mitochondrial dysfunction may contribute to the pathogenesis of sarcopenia: In rodents, there is age-dependent reduction in mitochondrial mass and a change in morphology; in nematodes, there is age-dependent fragmentation of mitochondria that precedes sarcomeric disorganization. In Drosophila and rats, components of the 26S proteasome are elevated in aged muscle. An advantage of the worm and fly models is that these organisms lack muscle stem cells, and thus processes that promote the maintenance of already assembled muscle, can be identified without the confounding influence of muscle regeneration. Zebrafish are an up and coming model of sarcopenia for future consideration. A better understanding of the molecular changes behind sarcopenia will help researchers develop better therapies to improve the muscle health of elderly individuals.
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Affiliation(s)
| | - Guy M. Benian
- Department of Pathology Emory University Atlanta Georgia USA
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28
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Yilmaz LS, Li X, Nanda S, Fox B, Schroeder F, Walhout AJ. Modeling tissue-relevant Caenorhabditis elegans metabolism at network, pathway, reaction, and metabolite levels. Mol Syst Biol 2020; 16:e9649. [PMID: 33022146 PMCID: PMC7537831 DOI: 10.15252/msb.20209649] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 09/10/2020] [Accepted: 09/11/2020] [Indexed: 01/04/2023] Open
Abstract
Metabolism is a highly compartmentalized process that provides building blocks for biomass generation during development, homeostasis, and wound healing, and energy to support cellular and organismal processes. In metazoans, different cells and tissues specialize in different aspects of metabolism. However, studying the compartmentalization of metabolism in different cell types in a whole animal and for a particular stage of life is difficult. Here, we present MEtabolic models Reconciled with Gene Expression (MERGE), a computational pipeline that we used to predict tissue-relevant metabolic function at the network, pathway, reaction, and metabolite levels based on single-cell RNA-sequencing (scRNA-seq) data from the nematode Caenorhabditis elegans. Our analysis recapitulated known tissue functions in C. elegans, captured metabolic properties that are shared with similar tissues in human, and provided predictions for novel metabolic functions. MERGE is versatile and applicable to other systems. We envision this work as a starting point for the development of metabolic network models for individual cells as scRNA-seq continues to provide higher-resolution gene expression data.
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Affiliation(s)
- Lutfu Safak Yilmaz
- Program in Systems Biology, Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA, USA
| | - Xuhang Li
- Program in Systems Biology, Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA, USA
| | - Shivani Nanda
- Program in Systems Biology, Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA, USA
| | - Bennett Fox
- Boyce Thompson Institute, Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, USA
| | - Frank Schroeder
- Boyce Thompson Institute, Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, USA
| | - Albertha Jm Walhout
- Program in Systems Biology, Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA, USA
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29
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LaRocca TJ, Cavalier AN, Wahl D. Repetitive elements as a transcriptomic marker of aging: Evidence in multiple datasets and models. Aging Cell 2020; 19:e13167. [PMID: 32500641 PMCID: PMC7412685 DOI: 10.1111/acel.13167] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 04/21/2020] [Accepted: 05/05/2020] [Indexed: 12/27/2022] Open
Abstract
Transcriptomic markers of aging can be useful for studying age‐related processes and diseases. However, noncoding repetitive element (RE) transcripts, which may play an important role in aging, are commonly overlooked in transcriptome studies—and their potential as a transcriptomic marker of aging has not been evaluated. Here, we used multiple RNA‐seq datasets generated from human samples and Caenorhabditis elegans and found that most RE transcripts (a) accumulate progressively with aging; (b) can be used to accurately predict age; and (c) may be a good marker of biological age. The strong RE/aging correlations we observed are consistent with growing evidence that RE transcripts contribute directly to aging and disease.
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Affiliation(s)
- Thomas J. LaRocca
- Department of Health and Exercise Science Center for Healthy Aging Colorado State University Fort Collins CO USA
| | - Alyssa N. Cavalier
- Department of Health and Exercise Science Center for Healthy Aging Colorado State University Fort Collins CO USA
| | - Devin Wahl
- Department of Health and Exercise Science Center for Healthy Aging Colorado State University Fort Collins CO USA
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30
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Gibson AK, Baffoe-Bonnie H, Penley MJ, Lin J, Owens R, Khalid A, Morran LT. The evolution of parasite host range in heterogeneous host populations. J Evol Biol 2020; 33:773-782. [PMID: 32086852 PMCID: PMC7275899 DOI: 10.1111/jeb.13608] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 01/24/2020] [Accepted: 02/11/2020] [Indexed: 01/07/2023]
Abstract
Theory on the evolution of niche width argues that resource heterogeneity selects for niche breadth. For parasites, this theory predicts that parasite populations will evolve, or maintain, broader host ranges when selected in genetically diverse host populations relative to homogeneous host populations. To test this prediction, we selected the bacterial parasite Serratia marcescens to kill Caenorhabditis elegans in populations that were genetically heterogeneous (50% mix of two experimental genotypes) or homogeneous (100% of either genotype). After 20 rounds of selection, we compared the host range of selected parasites by measuring parasite fitness (i.e. virulence, the selected fitness trait) on the two focal host genotypes and on a novel host genotype. As predicted, heterogeneous host populations selected for parasites with a broader host range: these parasite populations gained or maintained virulence on all host genotypes. This result contrasted with selection in homogeneous populations of one host genotype. Here, host range contracted, with parasite populations gaining virulence on the focal host genotype and losing virulence on the novel host genotype. This pattern was not, however, repeated with selection in homogeneous populations of the second host genotype: these parasite populations did not gain virulence on the focal host genotype, nor did they lose virulence on the novel host genotype. Our results indicate that host heterogeneity can maintain broader host ranges in parasite populations. Individual host genotypes, however, vary in the degree to which they select for specialization in parasite populations.
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Affiliation(s)
- Amanda K Gibson
- Department of Biology, Emory University, Atlanta, GA 30322
- Department of Biology, University of Virginia, Virginia 22902, USA
| | | | | | - Julie Lin
- Department of Biology, Emory University, Atlanta, GA 30322
| | - Raythe Owens
- Department of Biology, Emory University, Atlanta, GA 30322
| | - Arooj Khalid
- Department of Biology, Emory University, Atlanta, GA 30322
| | - Levi T. Morran
- Department of Biology, Emory University, Atlanta, GA 30322
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31
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Herzog LK, Kevei É, Marchante R, Böttcher C, Bindesbøll C, Lystad AH, Pfeiffer A, Gierisch ME, Salomons FA, Simonsen A, Hoppe T, Dantuma NP. The Machado-Joseph disease deubiquitylase ataxin-3 interacts with LC3C/GABARAP and promotes autophagy. Aging Cell 2020; 19:e13051. [PMID: 31625269 PMCID: PMC6974715 DOI: 10.1111/acel.13051] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 09/16/2019] [Accepted: 09/23/2019] [Indexed: 12/21/2022] Open
Abstract
The pathology of spinocerebellar ataxia type 3, also known as Machado‐Joseph disease, is triggered by aggregation of toxic ataxin‐3 (ATXN3) variants containing expanded polyglutamine repeats. The physiological role of this deubiquitylase, however, remains largely unclear. Our recent work showed that ATX‐3, the nematode orthologue of ATXN3, together with the ubiquitin‐directed segregase CDC‐48, regulates longevity in Caenorhabditis elegans. Here, we demonstrate that the long‐lived cdc‐48.1; atx‐3 double mutant displays reduced viability under prolonged starvation conditions that can be attributed to the loss of catalytically active ATX‐3. Reducing the levels of the autophagy protein BEC‐1 sensitized worms to the effect of ATX‐3 deficiency, suggesting a role of ATX‐3 in autophagy. In support of this conclusion, the depletion of ATXN3 in human cells caused a reduction in autophagosomal degradation of proteins. Surprisingly, reduced degradation in ATXN3‐depleted cells coincided with an increase in the number of autophagosomes while levels of lipidated LC3 remained unaffected. We identified two conserved LIR domains in the catalytic Josephin domain of ATXN3 that directly interacted with the autophagy adaptors LC3C and GABARAP in vitro. While ATXN3 localized to early autophagosomes, it was not subject to lysosomal degradation, suggesting a transient regulatory interaction early in the autophagic pathway. We propose that the deubiquitylase ATX‐3/ATXN3 stimulates autophagic degradation by preventing superfluous initiation of autophagosomes, thereby promoting an efficient autophagic flux important to survive starvation.
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Affiliation(s)
- Laura K. Herzog
- Department of Cell and Molecular Biology Karolinska Institutet Stockholm Sweden
| | - Éva Kevei
- Institute for Genetics and CECAD Research Center University of Cologne Cologne Germany
| | - Ricardo Marchante
- Institute for Genetics and CECAD Research Center University of Cologne Cologne Germany
| | - Claudia Böttcher
- Department of Cell and Molecular Biology Karolinska Institutet Stockholm Sweden
| | - Christian Bindesbøll
- Department of Molecular Medicine Faculty of Medicine Institute of Basic Medical Sciences and Centre for Cancer Cell Reprogramming Institute of Clinical Medicine University of Oslo Oslo Norway
| | - Alf Håkon Lystad
- Department of Molecular Medicine Faculty of Medicine Institute of Basic Medical Sciences and Centre for Cancer Cell Reprogramming Institute of Clinical Medicine University of Oslo Oslo Norway
| | - Annika Pfeiffer
- Department of Cell and Molecular Biology Karolinska Institutet Stockholm Sweden
| | - Maria E. Gierisch
- Department of Cell and Molecular Biology Karolinska Institutet Stockholm Sweden
| | - Florian A. Salomons
- Department of Cell and Molecular Biology Karolinska Institutet Stockholm Sweden
| | - Anne Simonsen
- Department of Molecular Medicine Faculty of Medicine Institute of Basic Medical Sciences and Centre for Cancer Cell Reprogramming Institute of Clinical Medicine University of Oslo Oslo Norway
| | - Thorsten Hoppe
- Institute for Genetics and CECAD Research Center University of Cologne Cologne Germany
| | - Nico P. Dantuma
- Department of Cell and Molecular Biology Karolinska Institutet Stockholm Sweden
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32
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Ashkavand Z, Sarasija S, Ryan KC, Laboy JT, Norman KR. Corrupted ER-mitochondrial calcium homeostasis promotes the collapse of proteostasis. Aging Cell 2020; 19:e13065. [PMID: 31714672 PMCID: PMC6974732 DOI: 10.1111/acel.13065] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 09/30/2019] [Accepted: 10/17/2019] [Indexed: 11/28/2022] Open
Abstract
Aging and age-related diseases are associated with a decline of protein homeostasis (proteostasis), but the mechanisms underlying this decline are not clear. In particular, decreased proteostasis is a widespread molecular feature of neurodegenerative diseases, such as Alzheimer's disease (AD). Familial AD is largely caused by mutations in the presenilin encoding genes; however, their role in AD is not understood. In this study, we investigate the role of presenilins in proteostasis using the model system Caenorhabditis elegans. Previously, we found that mutations in C. elegans presenilin cause elevated ER to mitochondria calcium signaling, which leads to an increase in mitochondrial generated oxidative stress. This, in turn, promotes neurodegeneration. To understand the cellular mechanisms driving neurodegeneration, using several molecular readouts of protein stability in C. elegans, we find that presenilin mutants have widespread defects in proteostasis. Markedly, we demonstrate that these defects are independent of the protease activity of presenilin and that reduction in ER to mitochondrial calcium signaling can significantly prevent the proteostasis defects observed in presenilin mutants. Furthermore, we show that supplementing presenilin mutants with antioxidants suppresses the proteostasis defects. Our findings indicate that defective ER to mitochondria calcium signaling promotes proteostatic collapse in presenilin mutants by increasing oxidative stress.
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Affiliation(s)
- Zahra Ashkavand
- Department of Regenerative and Cancer Cell BiologyAlbany Medical CollegeAlbanyNYUSA
| | - Shaarika Sarasija
- Department of Regenerative and Cancer Cell BiologyAlbany Medical CollegeAlbanyNYUSA
| | - Kerry C. Ryan
- Department of Regenerative and Cancer Cell BiologyAlbany Medical CollegeAlbanyNYUSA
| | - Jocelyn T. Laboy
- Department of Regenerative and Cancer Cell BiologyAlbany Medical CollegeAlbanyNYUSA
| | - Kenneth R. Norman
- Department of Regenerative and Cancer Cell BiologyAlbany Medical CollegeAlbanyNYUSA
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33
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Müthel S, Uyar B, He M, Krause A, Vitrinel B, Bulut S, Vasiljevic D, Marchal I, Kempa S, Akalin A, Tursun B. The conserved histone chaperone LIN-53 is required for normal lifespan and maintenance of muscle integrity in Caenorhabditis elegans. Aging Cell 2019; 18:e13012. [PMID: 31397537 PMCID: PMC6826145 DOI: 10.1111/acel.13012] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 06/27/2019] [Accepted: 07/02/2019] [Indexed: 12/27/2022] Open
Abstract
Whether extension of lifespan provides an extended time without health deteriorations is an important issue for human aging. However, to which degree lifespan and aspects of healthspan regulation might be linked is not well understood. Chromatin factors could be involved in linking both aging aspects, as epigenetic mechanisms bridge regulation of different biological processes. The epigenetic factor LIN‐53 (RBBP4/7) associates with different chromatin‐regulating complexes to safeguard cell identities in Caenorhabditis elegans as well as mammals, and has a role in preventing memory loss and premature aging in humans. We show that LIN‐53 interacts with the nucleosome remodeling and deacetylase (NuRD) complex in C. elegans muscles to ensure functional muscles during postembryonic development and in adults. While mutants for other NuRD members show a normal lifespan, animals lacking LIN‐53 die early because LIN‐53 depletion affects also the histone deacetylase complex Sin3, which is required for a normal lifespan. To determine why lin‐53 and sin‐3 mutants die early, we performed transcriptome and metabolomic analysis revealing that levels of the disaccharide trehalose are significantly decreased in both mutants. As trehalose is required for normal lifespan in C. elegans, lin‐53 and sin‐3 mutants could be rescued by either feeding with trehalose or increasing trehalose levels via the insulin/IGF1 signaling pathway. Overall, our findings suggest that LIN‐53 is required for maintaining lifespan and muscle integrity through discrete chromatin regulatory mechanisms. Since both LIN‐53 and its mammalian homologs safeguard cell identities, it is conceivable that its implication in lifespan regulation is also evolutionarily conserved.
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Affiliation(s)
- Stefanie Müthel
- Berlin Institute of Medical Systems Biology Berlin Germany
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association Berlin Germany
| | - Bora Uyar
- Berlin Institute of Medical Systems Biology Berlin Germany
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association Berlin Germany
| | - Mei He
- Berlin Institute of Medical Systems Biology Berlin Germany
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association Berlin Germany
| | - Anne Krause
- Berlin Institute of Medical Systems Biology Berlin Germany
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association Berlin Germany
| | - Burcu Vitrinel
- Berlin Institute of Medical Systems Biology Berlin Germany
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association Berlin Germany
| | - Selman Bulut
- Berlin Institute of Medical Systems Biology Berlin Germany
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association Berlin Germany
| | - Djordje Vasiljevic
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association Berlin Germany
| | - Iris Marchal
- Berlin Institute of Medical Systems Biology Berlin Germany
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association Berlin Germany
| | - Stefan Kempa
- Berlin Institute of Medical Systems Biology Berlin Germany
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association Berlin Germany
| | - Altuna Akalin
- Berlin Institute of Medical Systems Biology Berlin Germany
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association Berlin Germany
| | - Baris Tursun
- Berlin Institute of Medical Systems Biology Berlin Germany
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association Berlin Germany
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34
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Li S, Zhao H, Zhang P, Liang C, Zhang Y, Hsu A, Dong M. DAF-16 stabilizes the aging transcriptome and is activated in mid-aged Caenorhabditis elegans to cope with internal stress. Aging Cell 2019; 18:e12896. [PMID: 30773782 PMCID: PMC6516157 DOI: 10.1111/acel.12896] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Accepted: 11/03/2018] [Indexed: 12/31/2022] Open
Abstract
The roles and regulatory mechanisms of transcriptome changes during aging are unclear. It has been proposed that the transcriptome suffers decay during aging owing to age‐associated down‐regulation of transcription factors. In this study, we characterized the role of a transcription factor DAF‐16, which is a highly conserved lifespan regulator, in the normal aging process of Caenorhabditis elegans. We found that DAF‐16 translocates into the nucleus in aged wild‐type worms and activates the expression of hundreds of genes in response to age‐associated cellular stress. Most of the age‐dependent DAF‐16 targets are different from the canonical DAF‐16 targets downstream of insulin signaling. This and other evidence suggest that activation of DAF‐16 during aging is distinct from activation of DAF‐16 due to reduced signaling from DAF‐2. Further analysis showed that it is due in part to a loss of proteostasis during aging. We also found that without daf‐16, dramatic gene expression changes occur as early as on adult day 2, indicating that DAF‐16 acts to stabilize the transcriptome during normal aging. Our results thus reveal that normal aging is not simply a process in which the gene expression program descends into chaos due to loss of regulatory activities; rather, there is active transcriptional regulation during aging.
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Affiliation(s)
- Shang‐Tong Li
- School of Life Sciences Tsinghua University Beijing China
- Peking University‐Tsinghua University‐National Institute of Biological Sciences (PTN) Joint Graduate Program Beijing China
- National Institute of Biological Sciences Beijing China
| | - Han‐Qing Zhao
- National Institute of Biological Sciences Beijing China
| | - Pan Zhang
- National Institute of Biological Sciences Beijing China
| | - Chung‐Yi Liang
- Research Center for Healthy Aging China Medical University Taichung Taiwan
| | | | - Ao‐Lin Hsu
- Research Center for Healthy Aging China Medical University Taichung Taiwan
- Institute of Biochemistry and Molecular Biology National Yang‐Ming University Taipei Taiwan
- Department of Internal Medicine, Division of Geriatric and Palliative Medicine University of Michigan Ann Arbor Michigan
| | - Meng‐Qiu Dong
- National Institute of Biological Sciences Beijing China
- Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University Beijing China
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35
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Minniti AN, Arriagada H, Zúñiga S, Bravo-Zehnder M, Alfaro IE, Aldunate R. Temporal pattern of neuronal insulin release during Caenorhabditis elegans aging: Role of redox homeostasis. Aging Cell 2019; 18:e12855. [PMID: 30456853 PMCID: PMC6351846 DOI: 10.1111/acel.12855] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 07/24/2018] [Accepted: 09/03/2018] [Indexed: 12/30/2022] Open
Abstract
The insulin‐IGF‐1/DAF‐2 pathway has a central role in the determination of aging and longevity in Caenorhabditis elegans and other organisms. In this paper, we measured neuronal insulin secretion (using INS‐22::Venus) during C. elegans lifespan and monitored how this secretion is modified by redox homeostasis. We showed that INS‐22::Venus secretion fluctuates during the organism lifetime reaching maximum levels in the active reproductive stage. We also demonstrate that long‐lived daf‐2 insulin receptor mutants show remarkable low levels of INS‐22::Venus secretion. In contrast, we found that short‐lived mutant worms that lack the oxidation repair enzyme MSRA‐1 show increased levels of INS‐22::Venus secretion, specifically during the reproductive stage. MSRA‐1 is a target of the insulin‐IGF‐1/DAF‐2 pathway, and the expression of this antioxidant enzyme exclusively in the nervous system rescues the mutant insulin release phenotype and longevity. The msra‐1 mutant phenotype can also be reverted by antioxidant treatment during the active reproductive stage. We showed for the first time that there is a pattern of neuronal insulin release with a noticeable increment during the peak of reproduction. Our results suggest that redox homeostasis can modulate longevity through the regulation of insulin secretion, and that the insulin‐IGF‐1/DAF‐2 pathway could be regulated, at least in part, by a feedback loop. These findings highlight the importance of timing for therapeutic interventions aimed at improving health span.
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Affiliation(s)
- Alicia N. Minniti
- Departamento de Biología Celular y Molecular, Facultad de Ciencias Biológicas; Pontificia Universidad Católica de Chile; Santiago Chile
| | - Héctor Arriagada
- Escuela de Biotecnología, Facultad de Ciencias; Universidad Santo Tomás; Santiago Chile
| | - Soledad Zúñiga
- Escuela de Biotecnología, Facultad de Ciencias; Universidad Santo Tomás; Santiago Chile
| | - Marcela Bravo-Zehnder
- Facultad de Ciencias, Centro de Biología Celular y Biomedicina; Universidad San Sebastián; Santiago Chile
| | - Iván E. Alfaro
- Departamento de Biología, Facultad de Ciencias Naturales y Exactas; Universidad de Playa Ancha; Valparaíso Chile
- Fundación Ciencia & Vida; Santiago Chile
| | - Rebeca Aldunate
- Escuela de Biotecnología, Facultad de Ciencias; Universidad Santo Tomás; Santiago Chile
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36
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Hotzi B, Kosztelnik M, Hargitai B, Takács‐Vellai K, Barna J, Bördén K, Málnási‐Csizmadia A, Lippai M, Ortutay C, Bacquet C, Pasparaki A, Arányi T, Tavernarakis N, Vellai T. Sex-specific regulation of aging in Caenorhabditis elegans. Aging Cell 2018; 17:e12724. [PMID: 29493066 PMCID: PMC5946081 DOI: 10.1111/acel.12724] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/20/2017] [Indexed: 02/03/2023] Open
Abstract
A fascinating aspect of sexual dimorphism in various animal species is that the two sexes differ substantially in lifespan. In humans, for example, women's life expectancy exceeds that of men by 3-7 years. Whether this trait can be attributed to dissimilar lifestyles or genetic (regulatory) factors remains to be elucidated. Herein, we demonstrate that in the nematode Caenorhabditis elegans, the significantly longer lifespan of hermaphrodites-which are essentially females capable of sperm production-over males is established by TRA-1, the terminal effector of the sex-determination pathway. This transcription factor directly controls the expression of daf-16/FOXO, which functions as a major target of insulin/IGF-1 signaling (IIS) and key modulator of aging across diverse animal phyla. TRA-1 extends hermaphrodite lifespan through promoting daf-16 activity. Furthermore, TRA-1 also influences reproductive growth in a DAF-16-dependent manner. Thus, the sex-determination machinery is an important regulator of IIS in this organism. These findings provide a mechanistic insight into how longevity and development are specified unequally in the two genders. As TRA-1 is orthologous to mammalian GLI (glioma-associated) proteins, a similar sex-specific mechanism may also operate in humans to determine lifespan.
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Affiliation(s)
| | | | - Balázs Hargitai
- Department of GeneticsEötvös Loránd UniversityBudapestHungary
| | | | - János Barna
- Department of GeneticsEötvös Loránd UniversityBudapestHungary
| | - Kincső Bördén
- Department of GeneticsEötvös Loránd UniversityBudapestHungary
| | | | - Mónika Lippai
- Department of Anatomy, Cell‐ and Developmental BiologyEötvös Loránd UniversityBudapestHungary
| | | | - Caroline Bacquet
- Institute of EnzymologyResearch Centre for Natural SciencesHungarian Academy of SciencesBudapestHungary
| | - Angela Pasparaki
- Institute of Molecular Biology and BiotechnologyFoundation for Research and Technology‐HellasHeraklionGreece
| | - Tamás Arányi
- Institute of EnzymologyResearch Centre for Natural SciencesHungarian Academy of SciencesBudapestHungary
- BNMI (INSERM 1083/CNRS 6214)Université d'AngersAngersFrance
| | - Nektarios Tavernarakis
- Institute of Molecular Biology and BiotechnologyFoundation for Research and Technology‐HellasHeraklionGreece
| | - Tibor Vellai
- Department of GeneticsEötvös Loránd UniversityBudapestHungary
- MTA‐ELTE Genetics Research GroupEötvös Loránd UniversityBudapestHungary
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37
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Mergoud dit Lamarche A, Molin L, Pierson L, Mariol M, Bessereau J, Gieseler K, Solari F. UNC-120/SRF independently controls muscle aging and lifespan in Caenorhabditis elegans. Aging Cell 2018; 17:e12713. [PMID: 29314608 PMCID: PMC5847867 DOI: 10.1111/acel.12713] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/20/2017] [Indexed: 12/21/2022] Open
Abstract
Aging is commonly defined as the loss of global homeostasis, which results from progressive alteration of all organs function. This model is currently challenged by recent data showing that interventions that extend lifespan do not always increase the overall fitness of the organism. These data suggest the existence of tissue-specific factors that regulate the pace of aging in a cell-autonomous manner. Here, we investigated aging of Caenorhabditis elegans striated muscles at the subcellular and the physiological level. Our data show that muscle aging is characterized by a dramatic decrease in the expression of genes encoding proteins required for muscle contraction, followed by a change in mitochondria morphology, and an increase in autophagosome number. Myofilaments, however, remain unaffected during aging. We demonstrated that the conserved transcription factor UNC-120/SRF regulates muscle aging biomarkers. Interestingly, the role of UNC-120/SRF in the control of muscle aging can be dissociated from its broader effect on lifespan. In daf-2/insulin/IGF1 receptor mutants, which exhibit a delayed appearance of muscle aging biomarkers and are long-lived, disruption of unc-120 accelerates muscle aging but does not suppress the lifespan phenotype of daf-2 mutant. Conversely, unc-120 overexpression delays muscle aging but does not increase lifespan. Overall, we demonstrate that UNC-120/SRF controls the pace of muscle aging in a cell-autonomous manner downstream of the insulin/IGF1 receptor.
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Affiliation(s)
- Adeline Mergoud dit Lamarche
- University of LyonUniversity of Lyon1 Claude Bernard Lyon1NeuroMyoGene InstituteCNRS UMR5310INSERM U1217LyonFrance
| | - Laurent Molin
- University of LyonUniversity of Lyon1 Claude Bernard Lyon1NeuroMyoGene InstituteCNRS UMR5310INSERM U1217LyonFrance
| | - Laura Pierson
- University of LyonUniversity of Lyon1 Claude Bernard Lyon1NeuroMyoGene InstituteCNRS UMR5310INSERM U1217LyonFrance
| | - Marie‐Christine Mariol
- University of LyonUniversity of Lyon1 Claude Bernard Lyon1NeuroMyoGene InstituteCNRS UMR5310INSERM U1217LyonFrance
| | - Jean‐Louis Bessereau
- University of LyonUniversity of Lyon1 Claude Bernard Lyon1NeuroMyoGene InstituteCNRS UMR5310INSERM U1217LyonFrance
- Hospices Civils de LyonFaculté de Médecine Lyon EstLyonFrance
| | - Kathrin Gieseler
- University of LyonUniversity of Lyon1 Claude Bernard Lyon1NeuroMyoGene InstituteCNRS UMR5310INSERM U1217LyonFrance
| | - Florence Solari
- University of LyonUniversity of Lyon1 Claude Bernard Lyon1NeuroMyoGene InstituteCNRS UMR5310INSERM U1217LyonFrance
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38
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Qi W, Gutierrez GE, Gao X, Dixon H, McDonough JA, Marini AM, Fisher AL. The ω-3 fatty acid α-linolenic acid extends Caenorhabditis elegans lifespan via NHR-49/PPARα and oxidation to oxylipins. Aging Cell 2017; 16:1125-1135. [PMID: 28772063 PMCID: PMC5595674 DOI: 10.1111/acel.12651] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/15/2017] [Indexed: 12/20/2022] Open
Abstract
The dietary intake of ω-3 polyunsaturated fatty acids has been linked to a reduction in the incidence of aging-associated disease including cardiovascular disease and stroke. Additionally, long-lived Caenorhabditis elegans glp-1 germ line-less mutant animals show a number of changes in lipid metabolism including the increased production of the ω-3 fatty acid, α-linolenic acid (ALA). Here, we show that the treatment of C. elegans with ALA produces a dose-dependent increase in lifespan. The increased longevity of the glp-1 mutant animals is known to be dependent on both the NHR-49/PPARα and SKN-1/Nrf2 transcription factors, although the mechanisms involved are incompletely understood. We find that ALA treatment increased the lifespan of wild-type worms and that these effects required both of these transcription factors. Specifically, NHR-49 was activated by ALA to promote the expression of genes involved in the β-oxidation of lipids, whereas SKN-1 is not directly activated by ALA, but instead, the exposure of ALA to air results in the oxidation of ALA to a group of compounds termed oxylipins. At least one of the oxylipins activates SKN-1 and enhances the increased longevity resulting from ALA treatment. The results show that ω-3 fatty acids inhibit aging and that these effects could reflect the combined effects of the ω-3 fatty acid and the oxylipin metabolites. The benefits of ω-3 fatty acid consumption on human health may similarly involve the production of oxylipins, and differences in oxylipin conversion could account for at least part of the variability found between observational vs. interventional clinical trials.
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Affiliation(s)
- Wenbo Qi
- Center for Healthy Aging; University of Texas Health Science Center at San Antonio; San Antonio TX 78229 USA
| | - Gloria E. Gutierrez
- Pharmaceuticals and Bioengineering; Chemistry and Chemical Engineering Division; Southwest Research Institute; San Antonio TX 78238 USA
| | - Xiaoli Gao
- Department of Biochemistry; University of Texas Health Science Center at San Antonio; San Antonio TX 78229 USA
| | - Hong Dixon
- Pharmaceuticals and Bioengineering; Chemistry and Chemical Engineering Division; Southwest Research Institute; San Antonio TX 78238 USA
| | - Joe A. McDonough
- Pharmaceuticals and Bioengineering; Chemistry and Chemical Engineering Division; Southwest Research Institute; San Antonio TX 78238 USA
| | - Ann M. Marini
- Department of Neurology and Program in Neuroscience; Uniformed Services University of the Health Sciences; Bethesda MD 20814 USA
| | - Alfred L. Fisher
- Center for Healthy Aging; University of Texas Health Science Center at San Antonio; San Antonio TX 78229 USA
- Division of Geriatrics, Gerontology, and Palliative Medicine; Department of Medicine; University of Texas Health Science Center at San Antonio; San Antonio TX 78229 USA
- GRECC; South Texas VA Healthcare System; San Antonio TX 78229 USA
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Sutphin GL, Backer G, Sheehan S, Bean S, Corban C, Liu T, Peters MJ, van Meurs JBJ, Murabito JM, Johnson AD, Korstanje R. Caenorhabditis elegans orthologs of human genes differentially expressed with age are enriched for determinants of longevity. Aging Cell 2017; 16:672-682. [PMID: 28401650 PMCID: PMC5506438 DOI: 10.1111/acel.12595] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/05/2017] [Indexed: 12/21/2022] Open
Abstract
We report a systematic RNAi longevity screen of 82 Caenorhabditis elegans genes selected based on orthology to human genes differentially expressed with age. We find substantial enrichment in genes for which knockdown increased lifespan. This enrichment is markedly higher than published genomewide longevity screens in C. elegans and similar to screens that preselected candidates based on longevity‐correlated metrics (e.g., stress resistance). Of the 50 genes that affected lifespan, 46 were previously unreported. The five genes with the greatest impact on lifespan (>20% extension) encode the enzyme kynureninase (kynu‐1), a neuronal leucine‐rich repeat protein (iglr‐1), a tetraspanin (tsp‐3), a regulator of calcineurin (rcan‐1), and a voltage‐gated calcium channel subunit (unc‐36). Knockdown of each gene extended healthspan without impairing reproduction. kynu‐1(RNAi) alone delayed pathology in C. elegans models of Alzheimer's disease and Huntington's disease. Each gene displayed a distinct pattern of interaction with known aging pathways. In the context of published work, kynu‐1, tsp‐3, and rcan‐1 are of particular interest for immediate follow‐up. kynu‐1 is an understudied member of the kynurenine metabolic pathway with a mechanistically distinct impact on lifespan. Our data suggest that tsp‐3 is a novel modulator of hypoxic signaling and rcan‐1 is a context‐specific calcineurin regulator. Our results validate C. elegans as a comparative tool for prioritizing human candidate aging genes, confirm age‐associated gene expression data as valuable source of novel longevity determinants, and prioritize select genes for mechanistic follow‐up.
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Affiliation(s)
| | - Grant Backer
- The Jackson Laboratory; 600 Main Street Bar Harbor ME 04609 USA
| | - Susan Sheehan
- The Jackson Laboratory; 600 Main Street Bar Harbor ME 04609 USA
| | - Shannon Bean
- The Jackson Laboratory; 600 Main Street Bar Harbor ME 04609 USA
| | - Caroline Corban
- The Jackson Laboratory; 600 Main Street Bar Harbor ME 04609 USA
| | - Teresa Liu
- The Jackson Laboratory; 600 Main Street Bar Harbor ME 04609 USA
| | - Marjolein J. Peters
- Department of Internal Medicine; Erasmus Medical Center; Postbus 2040 3000 CA Rotterdam The Netherlands
| | - Joyce B. J. van Meurs
- Department of Internal Medicine; Erasmus Medical Center; Postbus 2040 3000 CA Rotterdam The Netherlands
| | - Joanne M. Murabito
- Section of General Internal Medicine; Boston University School of Medicine; 801 Massachusetts Ave, Crosstown Center Boston MA 02118 USA
- The National Heart, Lung, and Blood Institute's Framingham Heart Study; 73 Mt. Wayte Ave, Suite 2 Framingham MA 01702-5827 USA
| | - Andrew D. Johnson
- The National Heart, Lung, and Blood Institute's Framingham Heart Study; 73 Mt. Wayte Ave, Suite 2 Framingham MA 01702-5827 USA
- Population Sciences Branch; National Heart, Lung, and Blood Institute; Building 31, Room 5A52, 31 Center Drive MSC 2486 Bethesda MD 20892 USA
| | - Ron Korstanje
- The Jackson Laboratory; 600 Main Street Bar Harbor ME 04609 USA
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40
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Abergel R, Livshits L, Shaked M, Chatterjee AK, Gross E. Synergism between soluble guanylate cyclase signaling and neuropeptides extends lifespan in the nematode Caenorhabditis elegans. Aging Cell 2017; 16:401-413. [PMID: 28054425 PMCID: PMC5334569 DOI: 10.1111/acel.12569] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/07/2016] [Indexed: 12/21/2022] Open
Abstract
Oxygen (O2) homeostasis is important for all aerobic animals. However, the manner by which O2 sensing and homeostasis contribute to lifespan regulation is poorly understood. Here, we use the nematode Caenorhabditis elegans to address this question. We demonstrate that a loss‐of‐function mutation in the neuropeptide receptor gene npr‐1 and a deletion mutation in the atypical soluble guanylate cyclase gcy‐35 O2 sensor interact synergistically to extend worm lifespan. The function of npr‐1 and gcy‐35 in the O2‐sensing neurons AQR, PQR, and URX shortens the lifespan of the worm. By contrast, the activity of the atypical soluble guanylate cyclase O2 sensor gcy‐33 in these neurons is crucial for lifespan extension. In addition to AQR, PQR, and URX, we show that the O2‐sensing neuron BAG and the interneuron RIA are also important for the lifespan lengthening. Neuropeptide processing by the proprotein convertase EGL‐3 is essential for lifespan extension, suggesting that the synergistic effect of joint loss of function of gcy‐35 and npr‐1 is mediated through neuropeptide signal transduction. The extended lifespan is regulated by hypoxia and insulin signaling pathways, mediated by the transcription factors HIF‐1 and DAF‐16. Moreover, reactive oxygen species (ROS) appear to play an important function in lifespan lengthening. As HIF‐1 and DAF‐16 activities are modulated by ROS, we speculate that joint loss of function of gcy‐35 and npr‐1 extends lifespan through ROS signaling.
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Affiliation(s)
- Rachel Abergel
- Department of Biochemistry and Molecular Biology; IMRIC; Faculty of Medicine; The Hebrew University of Jerusalem; Ein Kerem. P.O. Box 12271 Jerusalem 9112102 Israel
| | - Leonid Livshits
- Department of Biochemistry and Molecular Biology; IMRIC; Faculty of Medicine; The Hebrew University of Jerusalem; Ein Kerem. P.O. Box 12271 Jerusalem 9112102 Israel
| | - Maayan Shaked
- Department of Biochemistry and Molecular Biology; IMRIC; Faculty of Medicine; The Hebrew University of Jerusalem; Ein Kerem. P.O. Box 12271 Jerusalem 9112102 Israel
| | - Arijit Kumar Chatterjee
- Department of Biochemistry and Molecular Biology; IMRIC; Faculty of Medicine; The Hebrew University of Jerusalem; Ein Kerem. P.O. Box 12271 Jerusalem 9112102 Israel
| | - Einav Gross
- Department of Biochemistry and Molecular Biology; IMRIC; Faculty of Medicine; The Hebrew University of Jerusalem; Ein Kerem. P.O. Box 12271 Jerusalem 9112102 Israel
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41
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Wang D, Hou L, Nakamura S, Su M, Li F, Chen W, Yan Y, Green CD, Chen D, Zhang H, Antebi A, Han JDJ. LIN-28 balances longevity and germline stem cell number in Caenorhabditis elegans through let-7/AKT/DAF-16 axis. Aging Cell 2017; 16:113-124. [PMID: 27730721 PMCID: PMC5242300 DOI: 10.1111/acel.12539] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/17/2016] [Indexed: 01/23/2023] Open
Abstract
The RNA‐binding protein LIN‐28 was first found to control developmental timing in Caenorhabditis elegans. Later, it was found to play important roles in pluripotency, metabolism, and cancer in mammals. Here we report that a low dosage of lin‐28 enhanced stress tolerance and longevity, and reduced germline stem/progenitor cell number in C. elegans. The germline LIN‐28‐regulated microRNA let‐7 was required for these effects by targeting akt‐1/2 and decreasing their protein levels. AKT‐1/2 and the downstream DAF‐16 transcription factor were both required for the lifespan and germline stem cell effects of lin‐28. The pathway also mediated dietary restriction induced lifespan extension and reduction in germline stem cell number. Thus, the LIN‐28/let‐7/AKT/DAF‐16 axis we delineated here is a program that plays an important role in balancing reproduction and somatic maintenance and their response to the environmental energy level—a central dogma of the ‘evolutionary optimization’ of resource allocation that modulates aging.
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Affiliation(s)
- Dan Wang
- Key Laboratory of Computational Biology; CAS Center for Excellence in Molecular Cell Science; Collaborative Innovation Center for Genetics and Developmental Biology; Chinese Academy of Sciences-Max Planck Partner Institute for Computational Biology; Shanghai Institutes for Biological Sciences; Chinese Academy of Sciences; 320 Yue Yang Road Shanghai 200031 China
- University of Chinese Academy of Science; Beijing 100049 China
| | - Lei Hou
- Key Laboratory of Computational Biology; CAS Center for Excellence in Molecular Cell Science; Collaborative Innovation Center for Genetics and Developmental Biology; Chinese Academy of Sciences-Max Planck Partner Institute for Computational Biology; Shanghai Institutes for Biological Sciences; Chinese Academy of Sciences; 320 Yue Yang Road Shanghai 200031 China
| | - Shuhei Nakamura
- Max Planck Institute for Biology of Ageing; Joseph-Stelzmann-Strasse 9b Cologne 50931 Germany
| | - Ming Su
- Key Laboratory of Computational Biology; CAS Center for Excellence in Molecular Cell Science; Collaborative Innovation Center for Genetics and Developmental Biology; Chinese Academy of Sciences-Max Planck Partner Institute for Computational Biology; Shanghai Institutes for Biological Sciences; Chinese Academy of Sciences; 320 Yue Yang Road Shanghai 200031 China
| | - Fang Li
- Key Laboratory of Computational Biology; CAS Center for Excellence in Molecular Cell Science; Collaborative Innovation Center for Genetics and Developmental Biology; Chinese Academy of Sciences-Max Planck Partner Institute for Computational Biology; Shanghai Institutes for Biological Sciences; Chinese Academy of Sciences; 320 Yue Yang Road Shanghai 200031 China
| | - Weiyang Chen
- Key Laboratory of Computational Biology; CAS Center for Excellence in Molecular Cell Science; Collaborative Innovation Center for Genetics and Developmental Biology; Chinese Academy of Sciences-Max Planck Partner Institute for Computational Biology; Shanghai Institutes for Biological Sciences; Chinese Academy of Sciences; 320 Yue Yang Road Shanghai 200031 China
| | - Yizhen Yan
- Key Laboratory of Computational Biology; CAS Center for Excellence in Molecular Cell Science; Collaborative Innovation Center for Genetics and Developmental Biology; Chinese Academy of Sciences-Max Planck Partner Institute for Computational Biology; Shanghai Institutes for Biological Sciences; Chinese Academy of Sciences; 320 Yue Yang Road Shanghai 200031 China
- University of Chinese Academy of Science; Beijing 100049 China
| | - Christopher D. Green
- Key Laboratory of Computational Biology; CAS Center for Excellence in Molecular Cell Science; Collaborative Innovation Center for Genetics and Developmental Biology; Chinese Academy of Sciences-Max Planck Partner Institute for Computational Biology; Shanghai Institutes for Biological Sciences; Chinese Academy of Sciences; 320 Yue Yang Road Shanghai 200031 China
| | - Di Chen
- State Key Laboratory of Pharmaceutical Biotechnology and MOE Key Laboratory of Model Animals for Disease Study; Model Animal Research Center; Nanjing University; Nanjing Jiangsu 210061 China
| | - Hong Zhang
- Institute of Biophysics; Chinese Academy of Sciences; Beijing 100101 China
| | - Adam Antebi
- Max Planck Institute for Biology of Ageing; Joseph-Stelzmann-Strasse 9b Cologne 50931 Germany
| | - Jing-Dong J. Han
- Key Laboratory of Computational Biology; CAS Center for Excellence in Molecular Cell Science; Collaborative Innovation Center for Genetics and Developmental Biology; Chinese Academy of Sciences-Max Planck Partner Institute for Computational Biology; Shanghai Institutes for Biological Sciences; Chinese Academy of Sciences; 320 Yue Yang Road Shanghai 200031 China
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Howard AC, Rollins J, Snow S, Castor S, Rogers AN. Reducing translation through eIF4G/IFG-1 improves survival under ER stress that depends on heat shock factor HSF-1 in Caenorhabditis elegans. Aging Cell 2016; 15:1027-1038. [PMID: 27538368 PMCID: PMC5114698 DOI: 10.1111/acel.12516] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/27/2016] [Indexed: 02/06/2023] Open
Abstract
Although certain methods of lowering and/or altering mRNA translation are associated with increased lifespan, the mechanisms underlying this effect remain largely unknown. We previously showed that the increased lifespan conferred by reducing expression of eukaryotic translation initiation factor 4G (eIF4G/IFG‐1) enhances survival under starvation conditions while shifting protein expression toward factors involved with maintaining ER‐dependent protein and lipid balance. In this study, we investigated changes in ER homeostasis and found that lower eIF4G/IFG‐1 increased survival under conditions of ER stress. Enhanced survival required the ER stress sensor gene ire‐1 and the ER calcium ATPase gene sca‐1 and corresponded with increased translation of chaperones that mediate the ER unfolded protein response (UPRER). Surprisingly, the heat‐shock transcription factor gene hsf‐1 was also required for enhanced survival, despite having little or no influence on the ability of wild‐type animals to survive ER stress. The requirement for hsf‐1 led us to re‐evaluate the role of eIF4G/IFG‐1 on thermotolerance. Results show that lowering expression of this translation factor enhanced thermotolerance, but only after prolonged attenuation, the timing of which corresponded to increased transcription of heat‐shock factor transcriptional targets. Results indicate that restricting overall translation through eIF4G/IFG‐1 enhances ER and cytoplasmic proteostasis through a mechanism that relies heavily on hsf‐1.
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Affiliation(s)
- Amber C. Howard
- MDI Biological Laboratory Davis Center for Regenerative Biology and Medicine 159 Old Bar Harbor Road Salisbury Cove ME 04672 USA
| | - Jarod Rollins
- MDI Biological Laboratory Davis Center for Regenerative Biology and Medicine 159 Old Bar Harbor Road Salisbury Cove ME 04672 USA
| | - Santina Snow
- MDI Biological Laboratory Davis Center for Regenerative Biology and Medicine 159 Old Bar Harbor Road Salisbury Cove ME 04672 USA
| | - Sarah Castor
- The Jackson Laboratory 600 Main Street Bar Harbor ME 04609 USA
| | - Aric N. Rogers
- MDI Biological Laboratory Davis Center for Regenerative Biology and Medicine 159 Old Bar Harbor Road Salisbury Cove ME 04672 USA
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