Cited by 52Telomeres, Telomerase, and SenescenceGenetics, Aging, and Longevity in Model Organismsinterferon and immune responses

The struggle of a good friend getting old: cellular senescence in viral responses and therapy

Open access
Kohli, Jaskaren, Veenstra, Iris, Demaria, Marco·2021·The EMBO Reports

Abstract

Cellular senescence is a state of stable cell cycle arrest associated with macromolecular alterations and secretion of pro-inflammatory cytokines and molecules. Senescence-associated phenotypes restrict damage propagation and activate immune responses, two essential processes involved in response to viral infections. However, excessive accumulation and persistence of senescent cells can become detrimental and promote pathology and dysfunctions. Various pharmacological interventions, including antiviral therapies, lead to aberrant and premature senescence. Here, we review the molecular mechanisms by which viral infections and antiviral therapy induce senescence. We highlight the importance of these processes in attenuating viral dissemination and damage propagation, but also how prematurely induced senescent cells can promote detrimental adverse effects in humans. We describe which sequelae due to viral infections and treatment can be partly due to excessive and aberrant senescence. Finally, we propose that pharmacological strategies which eliminate senescent cells or suppress their secretory phenotype could mitigate side effects and alleviate the onset of additional morbidities. These strategies can become extremely beneficial in patients recovering from viral infections or undergoing antiviral therapy.

AI snapshot

Written from the paper’s full text.

TL;DR

This review argues that cellular senescence acts as an antiviral defense mechanism—restricting viral replication and promoting immune clearance—but can also drive pathology when senescent cells accumulate prematurely after viral infection or antiviral therapy. It proposes that senolytics or SASP modulators could mitigate adverse effects in patients recovering from viral infections or on antiviral therapy.

Key findings

  • Cellular senescence is a stable cell cycle arrest with a pro-inflammatory SASP; the cGAS–STING pathway, IFN-β, NF-κB, and TLR2/A-SAAs regulate both growth arrest and inflammation, and viral infections induce senescence markers (SA-β-gal, p16, p21, IL-6, IL-8) in multiple cell types, with the ROS inhibitor N-acetyl-L-cysteine preventing senescence induction.
  • Senescent cells can restrict viral virulence: lower VSV titres were obtained in bleomycin-induced senescent MEFs versus non-senescent MEFs, and similar results were seen in A549 and HRASV12-expressing MCF7 cells and with dengue virus in replicative senescent HUVECs; in vivo, intranasal VSV yielded no lung titres in bleomycin-treated mice, with NK and dendritic cell infiltrates present.
  • Oncoviruses evade senescence: HPV E6/E7 target p53 and pRB; HBV HBx reduces p16, p53, and p21 or methylates the p16 promoter; KSHV LANA, v-cyclin, and v-FLIP inhibit senescence; EBV LMP1 reduces p16 promoter activity and promotes nuclear export of Ets2.
  • Antiviral therapy induces senescence (AVTIS): NRTIs, NNRTIs, and protease inhibitors induce senescence markers in vitro and some in vivo; protease inhibitors act partly via prelamin A accumulation through ZMPSTE24 inhibition; HIV patients show immunosenescence and age-associated diseases, and in COVID-19 approximately 70% of deaths are reported from ARDS while around 30% of ICU patients display thrombotic complications; senolytics and SASP modulators are proposed as potential therapies.

Methods

  • Design: narrative review; no primary experiments or systematic review methodology are described.
  • Data/sample: synthesis of published in vitro, in vivo, and clinical/cohort evidence on viral infections, antiviral therapies, cellular senescence, immunosenescence, and age-associated diseases.
  • Main analysis: qualitative integration of molecular mechanisms and proposed therapeutic strategies, including senolytics and SASP modulators.

Limitations

  • Stated in the paper: only a relatively small number of virus-induced senescence studies are available; the mechanism of ROS production in VIS cells remains poorly understood; most AVTIS investigations used single agents rather than HAART combinations, possibly underestimating effects; NNRTI studies used only immortalized cancer or stem cell lines; EBV findings in fibroblasts need recapitulation in B cells; no evidence yet exists on whether antiretroviral compounds induce senescence in adipocytes in vitro; and it is difficult to delineate HIV virus versus antiretroviral drug contributions to immunosenescence.
  • Evident from the text: as a narrative review, it lacks a systematic search, risk-of-bias assessment, or quantitative synthesis; many conclusions rely on cell culture and animal models or correlative clinical associations, and one cited COVID-19 senescence finding is a preprint.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.15252/embr.202052243

Cites

153 of 153 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Claims the paper makes

0 of 103 cited sources checked · 0 supported · 0 flagged

  • Premisecitation

    HIV proteins Tat and Nef and protease inhibitors lopinavir and atazanavir are capable of inducing senescence in BM-MSCs.

    “These conflicts are possibly reconciled by reports that find both HIV proteins Tat and Nef and protease inhibitors lopinavir and atazanavir are capable of inducing senescence in BM‐MSCs.”
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    • cites Beaupere et al, 2015 source

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    There is divergence as to whether reduced BMD in HIV patients is due to HIV retrovirus or protease inhibitor therapy.

    “HIV patients are consistently reported to display reduced BMD and increased risk of developing osteoporosis, although there is some divergence as to whether this phenomenon occurs due to the HIV retrovirus or protease inhibitor therapy (Tebas et al, 2000; Bruera et al, 2003; Amiel et al, 2004; Brown & Qaqish, 2006).”
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  • Interpretationreasoning

    AVTIS induction by protease inhibitors is dependent upon immature processing of lamin A.

    “Therefore, AVTIS induction by protease inhibitors is dependent upon immature processing of lamin A.”
    Quote in the paperSubstantial claim
  • Premisecitation

    Senescent cells are capable of inducing paracrine senescence via the SASP.

    “Since senescent cells are capable of inducing paracrine senescence via the SASP (Acosta et al, 2013), it is possible that AVTIS induction in somatic cells in vivo promote senescence‐like phenotypes in immune cells.”
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  • Interpretationnone given

    Excessive accumulation and persistence of senescent cells can become detrimental and promote pathology and dysfunctions.

    “However, excessive accumulation and persistence of senescent cells can become detrimental and promote pathology and dysfunctions.”
    Quote in the paperNot a substantial claim
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    Interpretationnone given

    Senescence-associated phenotypes restrict damage propagation and activate immune responses, two essential processes involved in response to viral infections.

    “Senescence‐associated phenotypes restrict damage propagation and activate immune responses, two essential processes involved in response to viral infections.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Premisecitation

    HIV patients display reduced BMD and increased risk of osteoporosis.

    “HIV patients are consistently reported to display reduced BMD and increased risk of developing osteoporosis, although there is some divergence as to whether this phenomenon occurs due to the HIV retrovirus or protease inhibitor therapy (Tebas et al, 2000; Bruera et al, 2003; Amiel et al, 2004; Brown & Qaqish, 2006).”
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    • cites Bruera et al, 2003 source

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    Interpretationreasoning

    HAART may limit viral replication in CD4+ T lymphocytes and limit ageing of these cells.

    “Although HAART may limit viral replication in CD4+ T lymphocytes and limit ageing of these cells, they may promote immunosenescence through other aspects, e.g. by exhausting the hematopoietic stem cell pool, as mentioned previously (section 2).”
    Quote in the paperSubstantial claim
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    Interpretationreasoning

    Innate immune pathways enforce both growth arrest to inhibit viral replication and prevent further spread of pathogens, as well as expression of SASP molecules and NK cell ligands to promote immunosurveillance and clearance of infected cells.

    “Overall, these results suggest innate immune pathways enforce both growth arrest to inhibit viral replication and prevent further spread of pathogens, as well as expression of SASP molecules and NK cell ligands to promote immunosurveillance and clearance of infected cells.”
    Quote in the paperSubstantial claim
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    Premisecitation

    Mice with impaired capacity to eliminate senescent cells display increased accumulation of senescent cells, premature ageing signs, and shortened lifespans.

    “Mice engineered with an impaired capacity to eliminate senescent cells display increased natural accumulation of senescent cells, premature signs of ageing and shortened lifespans compared to wild‐type animals (Ovadya et al, 2018).”
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    Interpretationcitation

    AVTIS induction in somatic cells in vivo may promote senescence-like phenotypes in immune cells.

    “Since senescent cells are capable of inducing paracrine senescence via the SASP (Acosta et al, 2013), it is possible that AVTIS induction in somatic cells in vivo promote senescence‐like phenotypes in immune cells.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Interpretationreasoning

    HIV may directly induce VIS in CD4+ T cells.

    “As HIV is only capable of infecting CD4+ T cells (Wilen et al, 2012), it is possible that the virus directly induces VIS in these cells.”
    Quote in the paperNot a substantial claim
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    Premisecitation

    Senescent human arterial endothelial cells induced by protease inhibitors display reduced e-NOS expression and increased VCAM-1 secretion.

    “Importantly, these senescent cells displayed reduced expression of endothelial nitric oxide synthase (e‐NOS), an enzyme responsible for NO synthesis, and increased secretion of VCAM‐1 (Lefèvre et al, 2010; Auclair et al, 2014; Afonso et al, 2017).”
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    Premisecitation

    Senescent BM-MSCs do not effectively differentiate into osteoblasts and deposit reduced calcium in vitro.

    “Importantly, senescent BM‐MSCs do not be effectively differentiated into osteoblasts and deposit reduced levels of calcium in vitro (Hernandez‐Vallejo et al, 2013; Beaupere et al, 2015).”
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    Premisecitation

    SIRT3 is downregulated in prefrontal cortex of HIV patients, along with upregulation of p16 and p21.

    “This process is likely to be mediated by a Tat‐dependent downregulation of SIRT3, as the enzyme is found to be downregulated in the prefrontal cortex of HIV patients, along with an upregulation of p16 and p21 (Thangaraj et al, 2021).”
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    Premisecitation

    In mice on high-fat diet, administration of efavirenz and emtricitabine decreased glucose tolerance and increased insulin resistance.

    “When mice fed on a high‐fat diet were also administered with the NNRTI efavirenz and NRTI emtricitabine, there was a decrease in glucose tolerance and increase in insulin resistance (Pepin et al, 2018).”
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    Premisecitation

    Senescent astrocytes and microglia accumulate in a tau-dependent mouse model of AD and contribute to cognitive decline.

    “Senescent astrocytes and microglia accumulate in a tau‐dependent mouse model of AD where they contribute to cognitive decline in these mice (Bussian et al, 2018; Zhang et al, 2019).”
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    Premisecitation

    Tau-containing neurofibrillary tangles in neurons of Alzheimer patients display increased p16 mRNA expression and upregulation of an inflammatory transcriptome.

    “Increased p16 protein levels can be observed in astrocytes from Alzheimer patients compared to age‐matched controls (Bhat et al, 2012), while tau‐containing neurofibrillary tangles in neurons of Alzheimer patients also display increased expression of p16 mRNA, along with upregulation of an inflammatory transcriptome (Musi et al, 2018).”
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    Premisecitation

    Atherosclerosis is an age-associated vascular disease characterised by plaque formation in arterial vessels, which can lead to cardiovascular disorders.

    “Atherosclerosis is an age‐associated vascular disease characterised by the formation of plaques in arterial vessels, which can lead to the development of various cardiovascular disorders including myocardial infarction, stroke and sudden cardiac death (Tabas et al, 2015).”
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    Premisecitation

    HIV patients have higher risk of cardiovascular events, even higher in those treated with protease inhibitors.

    “HIV patients have been found to have a higher risk of cardiovascular events, which was even higher in patients treated with protease inhibitors (Friis‐Moller et al, 2007; Islam et al, 2012; Shah et al, 2018).”
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    Premisecitation

    In mice, excessive caloric intake results in accumulation of ROS in adipose tissue and increased expression of senescence and inflammatory markers (p21, TNF, CCL2).

    “In mice, excessive caloric intake results in an accumulation of reactive oxygen species in adipose tissue and increased expression of various senescence and inflammatory markers such as p21, TNF and CCL2 (Minamino et al, 2009).”
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  • May combine two claims.

    Interpretationreasoning

    Cellular senescence could play a key role in viral infections and ageing, either through antiviral defence pathways or somatic cell senescence upon viral exposure.

    “However, cellular senescence could play a key role, either because of the engagement of antiviral defence pathways or because different types of somatic cells can be reengaged to enter senescence upon exposure to viral infection.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S4 (based).

    Interpretationnone given

    Senolytics or SASP modulators may be beneficial in alleviating onset of age-associated symptoms in patients with chronic viral infections, such as HIV patients on antiretroviral therapy.

    “As well as benefiting patients suffering from acute viral infections like SARS‐Cov‐2, they may also be beneficial in alleviating onset of age‐associated symptoms in patients with chronic viral infections, such as HIV patients on antiretroviral therapy.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Dexamethasone is an approved glucocorticoid.

    “Dexamethasone is an approved glucocorticoid (Dexamethasone in Hospitalized Patients with Covid‐19—Preliminary Report, 2020) and has been demonstrated to blunt the SASP, albeit in models of senescent cancer cells (Ge et al, 2018; Buhl et al, 2019).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Dexamethasone in Hospitalized Patients with Covid‐19—Preliminary Report, 2020

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  • Probably not a substantial claim: may not pass S4 (based).

    Interpretationnone given

    Similar phenomena might happen for other viruses, including SARS-CoV-2.

    “Most experimental evidence is based on the correlation between HIV VIS and the premature onset of various age‐associated pathologies, but similar phenomena might well happen for other viruses, including SARS‐Cov‐2.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    Approximately 70% of COVID-19 deaths occur from ARDS, with age being one of the most significant risk factors.

    “Approximately 70% of COVID‐19 deaths are reported to occur from ARDS with age being one of the most significant risk factors (Hojyo et al, 2020; Jordan et al, 2020).”
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    Premisecitation

    Around 30% of SARS-CoV-2 patients in intensive care units display thrombotic complications.

    “For example, around 30% of SARS‐Cov‐2 patients in intensive care units display thrombotic complications (Klok et al, 2020), and senescence is reported to promote clotting via the secretion of certain SASP molecules (Wiley et al, 2019).”
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    Interpretationcitation

    Viral-mediated entry of brain and heart cells may induce VIS and localised inflammation leading to tissue dysfunction.

    “Since the receptor for SARS‐Cov‐2, angiotensin‐converting enzyme 2 (ACE2) is expressed in the brain and heart (Hamming et al, 2004), it is possible that viral‐mediated entry of these cells induces VIS and localised inflammation leading to tissue dysfunction.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Interpretationreasoning

    Cellular senescence could be an important factor in how COVID-19 manifests, especially in lungs, and why older people have higher mortality.

    “This could be an important factor in how COVID‐19 manifests, especially in the lungs, and why older people suffer from higher mortality (illustrated in Fig 4).”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S4 (based).

    Interpretationnone given

    In young individuals, SARS-CoV-2 entry into lung alveolar cells may induce senescence and SASP to limit viral infection and trigger immune-mediated clearance.

    “In young individuals, SARS‐Cov‐2 entry into lung alveolar cells may induce senescence and a SASP, in order to limit viral infection and trigger immune‐mediated clearance of infected cells.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Interpretationnone given

    SASP may induce paracrine senescence to limit viral infection in neighbouring lung cells.

    “The SASP may additionally induce paracrine senescence in order to limit viral infection in neighbouring lung cells.”
    Quote in the paperNot a substantial claim
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    Premisecitation

    ABT-263 is a senolytic that inhibits BCL-2 family anti-apoptotic proteins, which are typically upregulated in senescent cells.

    “ABT‐263 is one senolytic and functions to inhibit the BCL‐2 family of anti‐apoptotic proteins, which are typically upregulated in senescent cells (Zhu et al, 2016; Chang et al, 2016).”
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    Premisecitation

    Neurological and cardiovascular complications are common in COVID-19 patients.

    “Neurological and cardiovascular complications are also common observations in COVID‐19 patients (Ellul et al, 2020; Zheng et al, 2020).”
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28 of 28
  • The paper relies on this without support.

    The biological links between viral infections and ageing are still poorly characterised.

    “The biological links between viral infections and ageing are still poorly characterised (see also Box 1).”
  • The paper relies on this without support.

    No evidence exists on whether antiretroviral compounds can induce senescence in adipocytes in vitro.

    “To our knowledge, no evidence yet exists on whether antiretroviral compounds can induce senescence in adipocytes in vitro”
  • The paper relies on this without support.

    No evidence exists on whether senolytics can sensitise viral-infected cells to die.

    “To our knowledge, there is no evidence on whether these senolytics can sensitise viral‐infected cells to die”
3 of 3

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Virus-induced senescence appears to be a universal stress response in host cells and can be triggered by many virus species.

    “VIS appears to be a universal stress response in host cells and can be induced by many different virus species.”

    From COVID-19 and cellular senescence (2023) · cites this paper as [37]

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

Each contradiction between two passages listed here was confirmed by an independent check.

  • LMP1 mechanism names different exported transcription factors

    Minor

    The text attributes LMP1's effect to nuclear export of Ets2, but the title of the cited Ohtani et al. reference identifies the exported factors as E2F4/5.

1 of 1

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Authors
Kohli, J., Veenstra, I., & Demaria, M.
Affiliations
University Medical Center Groningen (NL)
Corresponding author
Demaria, Marco
Venue
The EMBO Reports
Published
2021-03-18
Volume
22
Issue
4
Pages
e52243-e52243
ISSN
  • 1469-221X (ISSN-L)
  • 1469-3178
OpenAlex
W3137945281
Cited by
52
References
153
Citations by year
2026: 3 · 2025: 4 · 2024: 9 · 2023: 10 · 2022: 15 · 2021: 11
FWCI
1.50
Type
journal article
Language
en
Open access
Locations
  • EMBO Reports (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • University of Groningen research database (University of Groningen / Centre for Information Technology) (submittedVersion, cc-by-nc-nd)
Funders
  • KWF Kankerbestrijding
  • H2020 Marie Skłodowska-Curie Actions
Topics
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Life Sciences › Immunology and Microbiology › Immunology › interferon and immune responses
Keywords
cellular senescence, viral infection, antiviral therapy, premature senescence, senescence-associated secretory phenotype, inflammatory cytokines, cell cycle arrest, senolytics, viral dissemination
MeSH terms
Aging, Humans, Phenotype, Cytokines, Cellular Senescence, Friends, Cell Cycle Checkpoints

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