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Aqdas M, Sung MH. NF-κB dynamics in the language of immune cells. Trends Immunol 2023; 44:32-43. [PMID: 36473794 PMCID: PMC9811507 DOI: 10.1016/j.it.2022.11.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 11/09/2022] [Accepted: 11/10/2022] [Indexed: 12/05/2022]
Abstract
Biological discovery has been driven by advances in throughput and resolution of analysis technologies. They have also created an indelible bias for snapshot-based knowledge. Even though recent methods such as multi-omics single-cell assays have empowered immunological investigations, they still provide snapshots of cellular behaviors and thus, have inherent limitations in reconstructing unsynchronized dynamic events across individual cells. Here, we present a rationale for how NF-κB may convey specificity of contextual information through subtle quantitative features of its signaling dynamics. The next frontier of predictive understanding should involve functional characterization of NF-κB signaling dynamics and their immunological implications. This may help solve the apparent paradox that a ubiquitously activated transcription factor can shape accurate responses to different immune challenges.
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Affiliation(s)
- Mohammad Aqdas
- Laboratory of Molecular Biology and Immunology, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Myong-Hee Sung
- Laboratory of Molecular Biology and Immunology, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA.
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Stock AJ, McDevitt RA, Puligilla C, Wang Y, Zhang Y, Wang K, Sun C, Becker KG, Lehrmann E, Wood WH, Gong Y, Aqdas M, Sung MH, Hoffmann V, Liu C, Gorospe M, Harrington L, Ferrucci L, Liu Y. Aberrant expression and localization of the RAP1 shelterin protein contribute to age-related phenotypes. PLoS Genet 2022; 18:e1010506. [PMID: 36441670 PMCID: PMC9704629 DOI: 10.1371/journal.pgen.1010506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 11/02/2022] [Indexed: 11/29/2022] Open
Abstract
Short telomeres induce a DNA damage response (DDR) that evokes apoptosis and senescence in human cells. An extant question is the contribution of telomere dysfunction-induced DDR to the phenotypes observed in aging and telomere biology disorders. One candidate is RAP1, a telomere-associated protein that also controls transcription at extratelomeric regions. To distinguish these roles, we generated a knockin mouse carrying a mutated Rap1, which was incapable of binding telomeres and did not result in eroded telomeres or a DDR. Primary Rap1 knockin embryonic fibroblasts showed decreased RAP1 expression and re-localization away from telomeres, with an increased cytosolic distribution akin to that observed in human fibroblasts undergoing telomere erosion. Rap1 knockin mice were viable, but exhibited transcriptomic alterations, proinflammatory cytokine/chemokine signaling, reduced lifespan, and decreased healthspan with increased body weight/fasting blood glucose levels, spontaneous tumor incidence, and behavioral deficits. Taken together, our data present mechanisms distinct from telomere-induced DDR that underlie age-related phenotypes.
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Affiliation(s)
- Amanda J. Stock
- Laboratory of Genetics and Genomics, National Institute on Aging/National Institutes of Health, Baltimore, Maryland, United States of America
| | - Ross A. McDevitt
- Comparative Medicine Section, National Institute on Aging/National Institutes of Health, Baltimore, Maryland, United States of America
| | - Chandrakala Puligilla
- Laboratory of Genetics and Genomics, National Institute on Aging/National Institutes of Health, Baltimore, Maryland, United States of America
| | - Yajun Wang
- Laboratory of Genetics and Genomics, National Institute on Aging/National Institutes of Health, Baltimore, Maryland, United States of America
| | - Yongqing Zhang
- Laboratory of Genetics and Genomics, National Institute on Aging/National Institutes of Health, Baltimore, Maryland, United States of America
| | - Kun Wang
- Laboratory of Genetics and Genomics, National Institute on Aging/National Institutes of Health, Baltimore, Maryland, United States of America
| | - Chongkui Sun
- Laboratory of Genetics and Genomics, National Institute on Aging/National Institutes of Health, Baltimore, Maryland, United States of America
| | - Kevin G. Becker
- Laboratory of Genetics and Genomics, National Institute on Aging/National Institutes of Health, Baltimore, Maryland, United States of America
| | - Elin Lehrmann
- Laboratory of Genetics and Genomics, National Institute on Aging/National Institutes of Health, Baltimore, Maryland, United States of America
| | - William H. Wood
- Laboratory of Genetics and Genomics, National Institute on Aging/National Institutes of Health, Baltimore, Maryland, United States of America
| | - Yi Gong
- Laboratory of Genetics and Genomics, National Institute on Aging/National Institutes of Health, Baltimore, Maryland, United States of America
| | - Mohammad Aqdas
- Laboratory of Molecular Biology and Immunology, National Institute on Aging/National Institutes of Health, Baltimore, Maryland, United States of America
| | - Myong-Hee Sung
- Laboratory of Molecular Biology and Immunology, National Institute on Aging/National Institutes of Health, Baltimore, Maryland, United States of America
| | - Victoria Hoffmann
- Division of Veterinary Resources, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Chengyu Liu
- Transgenic Core Facility, National Heart, Lung, and Blood Institute/National Institutes of Health, Bethesda, Maryland, United States of America
| | - Myriam Gorospe
- Laboratory of Genetics and Genomics, National Institute on Aging/National Institutes of Health, Baltimore, Maryland, United States of America
| | - Lea Harrington
- Institute for Research in Immunology & Cancer, Marcelle-Coutu Pavilion, Université de Montréal, Montreal, Quebec, Canada
| | - Luigi Ferrucci
- Translational Gerontology Branch, Biomedical Research Center, National Institute on Aging/National Institutes of Health, Baltimore, Maryland, United States of America
| | - Yie Liu
- Laboratory of Genetics and Genomics, National Institute on Aging/National Institutes of Health, Baltimore, Maryland, United States of America
- * E-mail:
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Rahman SMT, Aqdas M, Martin EW, Tomassoni Ardori F, Songkiatisak P, Oh KS, Uderhardt S, Yun S, Claybourne QC, McDevitt RA, Greco V, Germain RN, Tessarollo L, Sung MH. Double knockin mice show NF-κB trajectories in immune signaling and aging. Cell Rep 2022; 41:111682. [DOI: 10.1016/j.celrep.2022.111682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 09/06/2022] [Accepted: 10/27/2022] [Indexed: 11/23/2022] Open
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Kizilirmak C, Bianchi ME, Zambrano S. Insights on the NF-κB System Using Live Cell Imaging: Recent Developments and Future Perspectives. Front Immunol 2022; 13:886127. [PMID: 35844496 PMCID: PMC9277462 DOI: 10.3389/fimmu.2022.886127] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 05/25/2022] [Indexed: 11/29/2022] Open
Abstract
The transcription factor family of nuclear factor kappa B (NF-κB) proteins is widely recognized as a key player in inflammation and the immune responses, where it plays a fundamental role in translating external inflammatory cues into precise transcriptional programs, including the timely expression of a wide variety of cytokines/chemokines. Live cell imaging in single cells showed approximately 15 years ago that the canonical activation of NF-κB upon stimulus is very dynamic, including oscillations of its nuclear localization with a period close to 1.5 hours. This observation has triggered a fruitful interdisciplinary research line that has provided novel insights on the NF-κB system: how its heterogeneous response differs between cell types but also within homogeneous populations; how NF-κB dynamics translate external cues into intracellular signals and how NF-κB dynamics affects gene expression. Here we review the main features of this live cell imaging approach to the study of NF-κB, highlighting the key findings, the existing gaps of knowledge and hinting towards some of the potential future steps of this thriving research field.
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Affiliation(s)
- Cise Kizilirmak
- School of Medicine, Vita-Salute San Raffaele University, Milan, Italy
- Division of Genetics and Cell Biology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Marco E. Bianchi
- School of Medicine, Vita-Salute San Raffaele University, Milan, Italy
- Division of Genetics and Cell Biology, IRCCS San Raffaele Scientific Institute, Milan, Italy
- *Correspondence: Marco E. Bianchi, ; Samuel Zambrano,
| | - Samuel Zambrano
- School of Medicine, Vita-Salute San Raffaele University, Milan, Italy
- Division of Genetics and Cell Biology, IRCCS San Raffaele Scientific Institute, Milan, Italy
- *Correspondence: Marco E. Bianchi, ; Samuel Zambrano,
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Songkiatisak P, Rahman SMT, Aqdas M, Sung MH. NF-κB, a culprit of both inflamm-ageing and declining immunity? Immun Ageing 2022; 19:20. [PMID: 35581646 PMCID: PMC9112493 DOI: 10.1186/s12979-022-00277-w] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 04/29/2022] [Indexed: 04/21/2023]
Abstract
NF-κB is generally recognized as an important regulator of ageing, through its roles in cellular senescence and inflammatory pathways. Activated in virtually all cell-cell communication networks of the immune system, NF-κB is thought to affect age-related defects of both innate and adaptive immune cells, relevant to inflamm-ageing and declining adaptive immunity, respectively. Moreover, the family of NF-κB proteins that exist as heterodimers and homodimers exert their function beyond the immune system. Given their involvement in diverse areas such as DNA damage to metabolism, NF-κB has the potential to serve as linkages between known hallmarks of ageing. However, the complexity of NF-κB dimer composition, dynamic signaling, and tissue-specific actions has received relatively little attention in ageing research. Here, we discuss some areas where further research may bear fruit in our understanding the impact of NF-κB in healthy ageing and longevity.
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Affiliation(s)
- Preeyaporn Songkiatisak
- Laboratory of Molecular Biology and Immunology, National Institute on Aging, National Institutes of Health, 21224, Baltimore, MD, USA
| | - Shah Md Toufiqur Rahman
- Laboratory of Molecular Biology and Immunology, National Institute on Aging, National Institutes of Health, 21224, Baltimore, MD, USA
| | - Mohammad Aqdas
- Laboratory of Molecular Biology and Immunology, National Institute on Aging, National Institutes of Health, 21224, Baltimore, MD, USA
| | - Myong-Hee Sung
- Laboratory of Molecular Biology and Immunology, National Institute on Aging, National Institutes of Health, 21224, Baltimore, MD, USA.
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Meier-Soelch J, Mayr-Buro C, Juli J, Leib L, Linne U, Dreute J, Papantonis A, Schmitz ML, Kracht M. Monitoring the Levels of Cellular NF-κB Activation States. Cancers (Basel) 2021; 13:cancers13215351. [PMID: 34771516 PMCID: PMC8582385 DOI: 10.3390/cancers13215351] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 10/18/2021] [Indexed: 12/12/2022] Open
Abstract
Simple Summary In stress and disease situations, cells must rapidly and in a coordinated manner change their gene expression patterns to respond adequately. The NF-κB system comprises five transcription factors that are released from the cytosol to enter the nucleus in response to a wide range of extracellular stimuli via a complex cytosolic signaling system. In the nucleus, activated NF-κB dimers bind to specific chromatin loci across the entire genome and induce the expression of a broad repertoire of genes that regulate immune and inflammatory responses. Consistent with its biological importance, the extent of NF-κB activity is regulated and controlled at multiple levels. The aim of this review is to comprehensively present and discuss the currently available conceptual and methodological approaches to monitor the molecular activation status of the NF-κB system, including multi-level single cell analysis. Abstract The NF-κB signaling system plays an important regulatory role in the control of many biological processes. The activities of NF-κB signaling networks and the expression of their target genes are frequently elevated in pathophysiological situations including inflammation, infection, and cancer. In these conditions, the outcome of NF-κB activity can vary according to (i) differential activation states, (ii) the pattern of genomic recruitment of the NF-κB subunits, and (iii) cellular heterogeneity. Additionally, the cytosolic NF-κB activation steps leading to the liberation of DNA-binding dimers need to be distinguished from the less understood nuclear pathways that are ultimately responsible for NF-κB target gene specificity. This raises the need to more precisely determine the NF-κB activation status not only for the purpose of basic research, but also in (future) clinical applications. Here we review a compendium of different methods that have been developed to assess the NF-κB activation status in vitro and in vivo. We also discuss recent advances that allow the assessment of several NF-κB features simultaneously at the single cell level.
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Affiliation(s)
- Johanna Meier-Soelch
- Rudolf Buchheim Institute of Pharmacology, Justus Liebig University, 35392 Giessen, Germany
| | - Christin Mayr-Buro
- Rudolf Buchheim Institute of Pharmacology, Justus Liebig University, 35392 Giessen, Germany
| | - Jana Juli
- Rudolf Buchheim Institute of Pharmacology, Justus Liebig University, 35392 Giessen, Germany
| | - Lisa Leib
- Rudolf Buchheim Institute of Pharmacology, Justus Liebig University, 35392 Giessen, Germany
| | - Uwe Linne
- Mass Spectrometry Facility of the Department of Chemistry, Philipps University, 35032 Marburg, Germany
| | - Jan Dreute
- Institute of Biochemistry, Justus Liebig University, 35392 Giessen, Germany
| | - Argyris Papantonis
- Institute of Pathology, University Medical Center Göttingen, 37075 Göttingen, Germany
| | - M Lienhard Schmitz
- Institute of Biochemistry, Justus Liebig University, 35392 Giessen, Germany
| | - Michael Kracht
- Rudolf Buchheim Institute of Pharmacology, Justus Liebig University, 35392 Giessen, Germany
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