Aging CellPub Date : 2023-08-23DOI: 10.1111/acel.13954
Natalia Oleinik, Onder Albayram, Mohamed Faisal Kassir, F. Cansu Atilgan, Chase Walton, Eda Karakaya, John Kurtz, Alexander Alekseyenko, Habeeb Alsudani, Megan Sheridan, Zdzislaw M. Szulc, Besim Ogretmen
{"title":"Alterations of lipid-mediated mitophagy result in aging-dependent sensorimotor defects","authors":"Natalia Oleinik, Onder Albayram, Mohamed Faisal Kassir, F. Cansu Atilgan, Chase Walton, Eda Karakaya, John Kurtz, Alexander Alekseyenko, Habeeb Alsudani, Megan Sheridan, Zdzislaw M. Szulc, Besim Ogretmen","doi":"10.1111/acel.13954","DOIUrl":"10.1111/acel.13954","url":null,"abstract":"<p>The metabolic consequences of mitophagy alterations due to age-related stress in healthy aging brains versus neurodegeneration remain unknown. Here, we demonstrate that ceramide synthase 1 (CerS1) is transported to the outer mitochondrial membrane by the p17/PERMIT transporter that recognizes mislocalized mitochondrial ribosomes (mitoribosomes) via 39-FLRN-42 residues, inducing ceramide-mediated mitophagy. P17/PERMIT-CerS1-mediated mitophagy attenuated the argininosuccinate/fumarate/malate axis and induced <span>d</span>-glucose and fructose accumulation in neurons in culture and brain tissues (primarily in the cerebellum) of wild-type mice in vivo. These metabolic changes in response to sodium-selenite were nullified in the cerebellum of CerS1to/to (catalytically inactive for C18-ceramide production CerS1 mutant), PARKIN−/− or p17/PERMIT−/− mice that have dysfunctional mitophagy. Whereas sodium selenite induced mitophagy in the cerebellum and improved motor-neuron deficits in aged wild-type mice, exogenous fumarate or malate prevented mitophagy. Attenuating ceramide-mediated mitophagy enhanced damaged mitochondria accumulation and age-dependent sensorimotor abnormalities in p17/PERMIT−/− mice. Reinstituting mitophagy using a ceramide analog drug with selenium conjugate, LCL768, restored mitophagy and reduced malate/fumarate metabolism, improving sensorimotor deficits in old p17/PERMIT−/− mice. Thus, these data describe the metabolic consequences of alterations to p17/PERMIT/ceramide-mediated mitophagy associated with the loss of mitochondrial quality control in neurons and provide therapeutic options to overcome age-dependent sensorimotor deficits and related disorders like amyotrophic lateral sclerosis (ALS).</p>","PeriodicalId":119,"journal":{"name":"Aging Cell","volume":"22 10","pages":""},"PeriodicalIF":7.8,"publicationDate":"2023-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/acel.13954","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10060942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aging CellPub Date : 2023-08-23DOI: 10.1111/acel.13911
Konstantinos Tsesmelis, Gandhari Maity-Kumar, Dana Croner, Jasmin Sprissler, Miltiadis Tsesmelis, Tabea Hein, Bernd Baumann, Thomas Wirth
{"title":"Accelerated aging in mice with astrocytic redox imbalance as a consequence of SOD2 deletion","authors":"Konstantinos Tsesmelis, Gandhari Maity-Kumar, Dana Croner, Jasmin Sprissler, Miltiadis Tsesmelis, Tabea Hein, Bernd Baumann, Thomas Wirth","doi":"10.1111/acel.13911","DOIUrl":"https://doi.org/10.1111/acel.13911","url":null,"abstract":"<p>Aging of the central nervous system (CNS) leads to motoric and cognitive decline and increases the probability for neurodegenerative disease development. Astrocytes fulfill central homeostatic functions in the CNS including regulation of immune responses and metabolic support of neurons and oligodendrocytes. In this study, we investigated the effect of redox imbalance in astrocytes by using a conditional astrocyte-specific SOD2-deficient mouse model (SOD2<sup>ako</sup>) and analyzed these animals at different stages of their life. SOD2<sup>ako</sup> mice did not exhibit any overt phenotype within the first postnatal weeks. However, already as young adults, they displayed progressive motoric impairments. Moreover, as these mice grew older, they exhibited signs of a progeroid phenotype and early death. Histological analysis in moribund SOD2<sup>ako</sup> mice revealed the presence of age-related brain alterations, neuroinflammation, neuronal damage and myelin impairment in brain and spinal cord. Additionally, transcriptome analysis of primary astrocytes revealed that SOD2 deletion triggered a hypometabolic state and promoted polarization toward A1-neurotoxic status, possibly underlying the neuronal and myelin deficits. Conclusively, our study identifies maintenance of ROS homeostasis in astrocytes as a critical prerequisite for physiological CNS aging.</p>","PeriodicalId":119,"journal":{"name":"Aging Cell","volume":"22 9","pages":""},"PeriodicalIF":7.8,"publicationDate":"2023-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/acel.13911","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6994246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Inhibition of abnormal C/EBPβ/α-Syn signaling pathway through activation of Nrf2 ameliorates Parkinson's disease-like pathology","authors":"Zefang Lin, Lixuan Huang, Qianqian Cao, Hanyue Luo, Wei Yao, Ji-chun Zhang","doi":"10.1111/acel.13958","DOIUrl":"10.1111/acel.13958","url":null,"abstract":"<p>Parkinson's disease (PD) is characterized by the formation of Lewy bodies (LBs) in the brain. These LBs are primarily composed of α-Synuclein (α-Syn), which has aggregated. A recent report proposes that CCAAT/enhancer-binding proteins β (C/EBPβ) may act as an age-dependent transcription factor for α-Syn, thereby initiating PD pathologies by regulating its transcription. Potential therapeutic approaches to address PD could involve targeting the regulation of α-Syn by C/EBPβ. This study has revealed that Nrf2, also known as nuclear factor (erythroid-derived 2)-like 2 (NFE2L2), suppresses the transcription of C/EBPβ in SH-SY5Y cells when treated with MPP<sup>+</sup>. To activate Nrf2, sulforaphane, an Nrf2 activator, was administered. Additionally, C/EBPβ was silenced using C/EBPβ-DNA/RNA heteroduplex oligonucleotide (HDO). Both approaches successfully reduced abnormal α-Syn expression in primary neurons treated with MPP<sup>+</sup>. Furthermore, sustained activation of Nrf2 via its activator or inhibition of C/EBPβ using C/EBPβ-HDO resulted in a reduction of aberrant α-Syn expression, thus leading to an improvement in the degeneration of dopaminergic neurons in the substantia nigra pars compacta (SNc) in mouse models induced by 1-methyl-4-phenyl-1,2,5,6-tetrahydropyridine (MPTP) and those treated with preformed fibrils (PFFs). The data presented in this study illustrate that the activation of Nrf2 may provide a potential therapeutic strategy for PD by inhibiting the abnormal C/EBPβ/α-Syn signaling pathway.</p>","PeriodicalId":119,"journal":{"name":"Aging Cell","volume":"22 10","pages":""},"PeriodicalIF":7.8,"publicationDate":"2023-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/acel.13958","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10435090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aging CellPub Date : 2023-08-21DOI: 10.1111/acel.13968
Wanbao Yang, Da Mi Kim, Wen Jiang, Weiqi Ai, Quan Pan, Shahina Rahman, James J. Cai, Wesley A. Brashear, Yuxiang Sun, Shaodong Guo
{"title":"Suppression of FOXO1 attenuates inflamm-aging and improves liver function during aging","authors":"Wanbao Yang, Da Mi Kim, Wen Jiang, Weiqi Ai, Quan Pan, Shahina Rahman, James J. Cai, Wesley A. Brashear, Yuxiang Sun, Shaodong Guo","doi":"10.1111/acel.13968","DOIUrl":"10.1111/acel.13968","url":null,"abstract":"<p>The liver is a key metabolic organ that maintains whole-body nutrient homeostasis. Aging-induced liver function alterations contribute to systemic susceptibility to aging-related diseases. However, the molecular mechanisms of liver aging remain insufficiently understood. In this study, we performed bulk RNA-Seq and single-cell RNA-Seq analyses to investigate the underlying mechanisms of the aging-induced liver function changes. We found that liver inflammation, glucose intolerance, and liver fat deposition were aggravated in old mice. Aging significantly increased pro-inflammation in hepatic macrophages. Furthermore, we found that Kupffer cells (KCs) were the major driver to induce pro-inflammation in hepatic macrophages during aging. In KCs, aging significantly increased pro-inflammatory levels; in monocyte-derived macrophages (MDMs), aging had a limited effect on pro-inflammation but led to a functional quiescence in antigen presentation and phagosome process. In addition, we identified an aging-responsive KC-specific (ARKC) gene set that potentially mediates aging-induced pro-inflammation in KCs. Interestingly, FOXO1 activity was significantly increased in the liver of old mice. FOXO1 inhibition by AS1842856 significantly alleviated glucose intolerance, hepatic steatosis, and systemic inflammation in old mice. FOXO1 inhibition significantly attenuated aging-induced pro-inflammation in KCs partially through downregulation of ARKC genes. However, FOXO1 inhibition had a limited effect on aging-induced functional quiescence in MDMs. These results indicate that aging induces pro-inflammation in liver mainly through targeting KCs and FOXO1 is a key player in aging-induced pro-inflammation in KCs. Thus, FOXO1 could be a potential therapeutic target for the treatment of age-associated chronic diseases.</p>","PeriodicalId":119,"journal":{"name":"Aging Cell","volume":"22 10","pages":""},"PeriodicalIF":7.8,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/acel.13968","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10388212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aging CellPub Date : 2023-08-21DOI: 10.1111/acel.13967
Na Li, Ning Bai, Xiong Zhao, Rong Cheng, Xuan Wu, Bo Jiang, Xiaoman Li, Mingli Xue, Hongde Xu, Qiqiang Guo, Wendong Guo, Mengtao Ma, Sunrun Cao, Yanling Feng, Xiaoyu Song, Zhuo Wang, Xiaoyu Zhang, Yu Zou, Difei Wang, Hua Liu, Liu Cao
{"title":"Cooperative effects of SIRT1 and SIRT2 on APP acetylation","authors":"Na Li, Ning Bai, Xiong Zhao, Rong Cheng, Xuan Wu, Bo Jiang, Xiaoman Li, Mingli Xue, Hongde Xu, Qiqiang Guo, Wendong Guo, Mengtao Ma, Sunrun Cao, Yanling Feng, Xiaoyu Song, Zhuo Wang, Xiaoyu Zhang, Yu Zou, Difei Wang, Hua Liu, Liu Cao","doi":"10.1111/acel.13967","DOIUrl":"10.1111/acel.13967","url":null,"abstract":"<p>Alzheimer's disease (AD) is an age-related neurodegenerative disorder characterized by amyloid-β (Aβ) deposition and neurofibrillary tangles. Although the NAD<sup>+</sup>-dependent deacetylases SIRT1 and SIRT2 play pivotal roles in age-related diseases, their cooperative effects in AD have not yet been elucidated. Here, we report that the SIRT2:SIRT1 ratio is elevated in the brains of aging mice and in the AD mouse models. In HT22 mouse hippocampal neuronal cells, Aβ challenge correlates with decreased SIRT1 expression, while SIRT2 expression is increased. Overexpression of SIRT1 prevents Aβ-induced neurotoxicity. We find that SIRT1 impedes SIRT2-mediated APP deacetylation by inhibiting the binding of SIRT2 to APP. Deletion of SIRT1 reduces APP recycling back to the cell surface and promotes APP transiting toward the endosome, thus contributing to the amyloidogenic processing of APP. Our findings define a mechanism for neuroprotection by SIRT1 through suppression of SIRT2 deacetylation, and provide a promising avenue for therapeutic intervention of AD.</p>","PeriodicalId":119,"journal":{"name":"Aging Cell","volume":"22 10","pages":""},"PeriodicalIF":7.8,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/acel.13967","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10032476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"ApoE4 exacerbates the senescence of hippocampal neurons and spatial cognitive impairment by downregulating acetyl-CoA level","authors":"Shuixin Lv, Yusi Zhang, Yingbin Lin, Wenting Fang, Yu Wang, Zihang Li, Anlan Lin, Xiaoman Dai, Qinyong Ye, Jing Zhang, Xiaochun Chen","doi":"10.1111/acel.13932","DOIUrl":"https://doi.org/10.1111/acel.13932","url":null,"abstract":"<p>Although aging and apolipoprotein E (<i>APOE</i>) ε4 allele have been documented as two major risk factors for late-onset Alzheimer's disease (LOAD), their interaction and potential underlying mechanisms remain unelucidated. Using humanized ApoE4- and ApoE3- target replacement mice, we found the accumulation of senescent neurons and the activation of mTOR and endosome-lysosome-autophagy (ELA) system in the hippocampus of aged ApoE4 mice. Further analyses revealed that ApoE4 aggravated the profile change of hippocampal transcription and metabolism in an age-dependent manner, accompanying with an disruption of metabolism, which is presented with the downregulating activity of citrate synthase, the level of ATP and, most importantly, the level of acetyl coenzyme A (Ac-CoA); GTA supplement, an Ac-CoA substrate, reversed the senescent characteristics, decreased the activation of mTOR and ELA system, and enhanced the synaptic structure and increasing level of pre-/post-synaptic plasticity-related protein, leading to cognitive improvement in aged ApoE4 mice. These data suggest that ApoE4 exacerbates neuronal senescence due to a deficiency of acetyl-CoA, which can be ameliorated by GTA supplement. The findings provide novel insights into the potential therapeutic value of GTA supplement for the cognitive improvement in aged <i>APOE</i>4 carriers.</p>","PeriodicalId":119,"journal":{"name":"Aging Cell","volume":"22 9","pages":""},"PeriodicalIF":7.8,"publicationDate":"2023-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/acel.13932","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6946856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aging CellPub Date : 2023-08-16DOI: 10.1111/acel.13955
Jiachen Chen, Margaret F. Doyle, Yuan Fang, Jesse Mez, Paul K. Crane, Phoebe Scollard, ADSP Data Harmonization Consortium Cognitive Harmonization Core, Claudia L. Satizabal, Michael L. Alosco, Wei Qiao Qiu, Joanne M. Murabito, Kathryn L. Lunetta
{"title":"Peripheral inflammatory biomarkers are associated with cognitive function and dementia: Framingham Heart Study Offspring cohort","authors":"Jiachen Chen, Margaret F. Doyle, Yuan Fang, Jesse Mez, Paul K. Crane, Phoebe Scollard, ADSP Data Harmonization Consortium Cognitive Harmonization Core, Claudia L. Satizabal, Michael L. Alosco, Wei Qiao Qiu, Joanne M. Murabito, Kathryn L. Lunetta","doi":"10.1111/acel.13955","DOIUrl":"10.1111/acel.13955","url":null,"abstract":"<p>Inflammatory protein biomarkers induced by immune responses have been associated with cognitive decline and the pathogenesis of Alzheimer's disease (AD). Here, we investigate associations between a panel of inflammatory biomarkers and cognitive function and incident dementia outcomes in the well-characterized Framingham Heart Study Offspring cohort. Participants aged ≥40 years and dementia-free at Exam 7 who had a stored plasma sample were selected for profiling using the OLINK proteomics inflammation panel. Cross-sectional associations of the biomarkers with cognitive domain scores (<i>N</i> = 708, 53% female, 22% apolipoprotein E (<i>APOE</i>) ε4 carriers, 15% <i>APOE</i> ε2 carriers, mean age 61) and incident all-cause and AD dementia during up to 20 years of follow-up were tested. <i>APOE</i> genotype-stratified analyses were performed to explore effect modification. Higher levels of 12 and 3 proteins were associated with worse executive function and language domain factor scores, respectively. Several proteins were associated with more than one cognitive domain, including IL10, LIF-R, TWEAK, CCL19, IL-17C, MCP-4, and TGF-alpha. Stratified analyses suggested differential effects between <i>APOE</i> ε2 and ε4 carriers: most ε4 carrier associations were with executive function and memory domains, whereas most ε2 associations were with the visuospatial domain. Higher levels of TNFB and CDCP1 were associated with higher risks of incident all-cause and AD dementia. Our study found that TWEAK concentration was associated both with cognitive function and risks for AD dementia. The association of these inflammatory biomarkers with cognitive function and incident dementia may contribute to the discovery of therapeutic interventions for the prevention and treatment of cognitive decline.</p>","PeriodicalId":119,"journal":{"name":"Aging Cell","volume":"22 10","pages":""},"PeriodicalIF":7.8,"publicationDate":"2023-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/acel.13955","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10136439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aging CellPub Date : 2023-08-09DOI: 10.1111/acel.13949
Hasan Ishtayeh, Margarita Galves, Tania T. Barnatan, Yevgeny Berdichevsky, Fatima Amer-Sarsour, Metsada Pasmanik-Chor, Itzhak Braverman, Sergiu C. Blumen, Avraham Ashkenazi
{"title":"Oculopharyngeal muscular dystrophy mutations link the RNA-binding protein HNRNPQ to autophagosome biogenesis","authors":"Hasan Ishtayeh, Margarita Galves, Tania T. Barnatan, Yevgeny Berdichevsky, Fatima Amer-Sarsour, Metsada Pasmanik-Chor, Itzhak Braverman, Sergiu C. Blumen, Avraham Ashkenazi","doi":"10.1111/acel.13949","DOIUrl":"10.1111/acel.13949","url":null,"abstract":"<p>Autophagy is an intracellular degradative process with an important role in cellular homeostasis. Here, we show that the RNA binding protein (RBP), heterogeneous nuclear ribonucleoprotein Q (HNRNPQ)/SYNCRIP is required to stimulate early events in autophagosome biogenesis, in particular the induction of VPS34 kinase by ULK1-mediated beclin 1 phosphorylation. The RBPs HNRNPQ and poly(A) binding protein nuclear 1 (PABPN1) form a regulatory network that controls the turnover of distinct autophagy-related (ATG) proteins. We also show that oculopharyngeal muscular dystrophy (OPMD) mutations engender a switch from autophagosome stimulation to autophagosome inhibition by impairing PABPN1 and HNRNPQ control of the level of ULK1. The overexpression of HNRNPQ in OPMD patient-derived cells rescues the defective autophagy in these cells. Our data reveal a regulatory mechanism of autophagy induction that is compromised by PABPN1 disease mutations, and may thus further contribute to their deleterious effects.</p>","PeriodicalId":119,"journal":{"name":"Aging Cell","volume":"22 10","pages":""},"PeriodicalIF":7.8,"publicationDate":"2023-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/acel.13949","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9967194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aging CellPub Date : 2023-08-08DOI: 10.1111/acel.13956
{"title":"Anatomical Society Research Studentships 2023/24","authors":"","doi":"10.1111/acel.13956","DOIUrl":"https://doi.org/10.1111/acel.13956","url":null,"abstract":"","PeriodicalId":119,"journal":{"name":"Aging Cell","volume":"22 8","pages":""},"PeriodicalIF":7.8,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/acel.13956","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6147379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aging CellPub Date : 2023-08-08DOI: 10.1111/acel.13950
Yuli Hou, Qiao Song, Yaqi Wang, Jing Liu, Yuting Cui, Xiaomin Zhang, Jingjing Zhang, Jingxuan Fu, Min Cao, Chi Zhang, Congcong Liu, Xiaoling Wang, Huanli Duan, Peichang Wang
{"title":"Downregulation of Krüppel-like factor 14 accelerated cellular senescence and aging","authors":"Yuli Hou, Qiao Song, Yaqi Wang, Jing Liu, Yuting Cui, Xiaomin Zhang, Jingjing Zhang, Jingxuan Fu, Min Cao, Chi Zhang, Congcong Liu, Xiaoling Wang, Huanli Duan, Peichang Wang","doi":"10.1111/acel.13950","DOIUrl":"10.1111/acel.13950","url":null,"abstract":"<p>Aging has been considered as a risk factor in many diseases, thus, comprehensively understanding the cellular and molecular mechanisms of delayed aging is important. Here we investigated whether Krüppel-like factor 14 (KLF14) is a suppressor of cellular senescence and aging. In our research, KLF14 levels significantly decreased not only in the lymphocytes of healthy people but also in the cells and tissues of mice with aging. We performed in vitro and in vivo experiments on cells and mice to reveal the function of KLF14 in aging. KLF14 deficiency facilitates cellular senescence and aging-related pathologies in C57BL/6J mice, whereas KLF14 overexpression attenuates cellular senescence. Mechanistically, KLF14 delays aging by binding to the POLD1 promoter to positively regulate POLD1 expression. Remarkably, cellular senescence mediated by KLF14 downregulation could be alleviated by POLD1 expression. In addition, perhexiline, an agonist of KLF14, could delay cellular senescence and aging-related pathologies in senescence-accelerated P8 mice by inducing POLD1 expression, as perhexiline could enhance the effect of KLF14's transcription activation to POLD1 by elevating the binding level of KLF14 to the POLD1 promoter. Our data indicate that KLF14 might be a critical element in aging by upregulating POLD1 expression, indicating that the activation of KLF14 may delay aging and aging-associated diseases.</p>","PeriodicalId":119,"journal":{"name":"Aging Cell","volume":"22 10","pages":""},"PeriodicalIF":7.8,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/acel.13950","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9945367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}