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JAK inhibition alleviates the cellular senescence-associated secretory phenotype and frailty in old age
Open accessAbstract
Significance: A hallmark of aging is chronic sterile inflammation, which is closely associated with frailty and age-related diseases. We found that senescent fat progenitor cells accumulate in adipose tissue with aging and acquire a senescence-associated secretory phenotype (SASP), with increased production of proinflammatory cytokines compared with nonsenescent cells. These cells provoked inflammation in adipose tissue and induced macrophage migration. The JAK pathway is activated in adipose tissue with aging, and the SASP can be suppressed by inhibiting the JAK pathway in senescent cells. JAK1/2 inhibitors reduced inflammation and alleviated frailty in aged mice. One possible mechanism contributing to reduced frailty is SASP inhibition. Our study points to the JAK pathway as a potential target for countering age-related dysfunction.
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“Sncs can directly cause insulin resistance through release of SASP factors such as IL-6 and TNF-α (39, 40).”
From Senolytic Drugs: Reducing Senescent Cell Viability to Extend Health Span (2021) · cites this paper as [39]
Experimental — accuracy not yet measuredThe source backs part of the claim, not all of it — or backs it for a different population, condition or comparison.
In the citing paper
“We showed that aged 3xTg-AD male mice in particular, exhibit elevated plasma levels of known SASP factors [65, 66], including IL-12, IL-10, IL-6, CXCL2, CXCL1, and G-CSF”
From Age, sex and Alzheimer’s disease: a longitudinal study of 3xTg-AD mice reveals sex-specific disease trajectories and inflammatory responses mirrored in postmortem brains from Alzheimer’s patients (2024) · cites this paper as [66]
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“This concept is supported by a study of aged mice demonstrating that pharmacologic inhibition of the JAK pathway, which regulates the SASP in senescent preadipocytes and endothelial cells in vitro, suppresses markers of both adipose tissue and systemic inflammation and improved parameters of muscle strength, endurance, and coordination (39).”
From Senolytic Drugs: Reducing Senescent Cell Viability to Extend Health Span (2021) · cites this paper as [39]
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“Furthermore, JAK inhibitors alleviated frailty in aged mice99.”
From Cellular senescence in ageing: from mechanisms to therapeutic opportunities (2021) · cites this paper as [99]
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“Similarly, other inhibitors of proinflammatory signalling (e.g. JAK/STAT [124] and p38 [60]) and antibodies targeting IL-6 [125], IL-1 [126] and TNFa [127], might be potentially effective senomorphic drugs.”
From The role of cellular senescence and SASP in tumour microenvironment (2023) · cites this paper as [124]
In the citing paper
“Alternatively, it is possible to modulate individual components of the SASP by inhibiting Janus kinase (JAK) 1/2148 and JAK2/signal transducer and activator of transcription 3 (STAT3).149”
From Senescence-induced inflammation: an important player and key therapeutic target in atherosclerosis (2020) · cites this paper as [148]
In the citing paper
“Similarly, the inhibition of pro-inflammatory JAK signalling in the same model was shown to attenuate pathogenesis by reducing the infiltration of monocytes to the lung130–132.”
From COVID-19 and cellular senescence (2023) · cites this paper as [131]
In the citing paper
“However, senomorphic treatment may require continuous administration and could potentially disrupt tissue homeostasis due to SASP blockade.”
From Senescence, brain inflammation, and oligomeric tau drive cognitive decline in Alzheimer's disease: Evidence from clinical and preclinical studies (2024) · cites this paper as [192]
In the citing paper
“In terms of alleviating age-related phenotypes, minimizing the SASP using Janus kinase/signal transducer and activator of transcription (JAK/STAT) inhibition is very similar to eliminating or reducing the burden of senescent cells genetically (e.g., using INK-ATTAC mice) or pharmacologically with senolytic agents [4, 11, 13, 60].”
From Reducing Senescent Cell Burden in Aging and Disease (2020) · cites this paper as [13]
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“…signaling pathways, including the NF-k B pathway, p38 mitogen-activated protein kinase (MAPK/ p38) pathway, mammalian target of rapamycin (mTOR) pathway, AMP-activated protein kinase (AMPK) pathway, and Janus kinase/ signal transducers and activators of transcription (JAK/STAT) pathway (13).”
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“Senescent cells may be one of the sources of chronic systemic inflammation: the senescence-associated secretory phenotype (SASP) is a group of proinflammatory cytokines, chemokines, and proteases secreted by senescent cells 9,24,25 , which collectively modify the local environment.”
Khosla, S. (2024) · Journal of Clinical Investigation · doi:10.1172/jci180558 · Cited by 4
“Conversely, reducing the SASP either through killing senescent cells using senolytics (4) or inhibiting the secretion of the SASP (e.g., using JAK inhibitors (8)) has now been shown to ameliorate a number of aging phenotypes, at least in mice.”
[The effect of deep branches of cervical nerve on motorial function of trapezius muscle].
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Self-citationCan hypoxic exercise retard cellular senescence? A narrative review
Huang, T., Tsang, C. S. L., & Huang, T. (2024) · European Review of Aging and Physical Activity · doi:10.1186/s11556-024-00352-9 · Cited by 3
Senotherapeutics: Milestones, innovations, and future prospects
Atasever, E., Atayik, M. C., & Çakatay, U. (2025) · Advances in pharmacology · doi:10.1016/bs.apha.2025.01.021 · Cited by 3
Unraveling senescence in cancer: mechanistic complexities and therapeutic opportunities
Tiwari, P., Shukla, S. K., & Verma, S. R. (2025) · Molecular Biology Reports · doi:10.1007/s11033-025-10630-z · Cited by 3
“In aged mice, inhibiting SASP in senescent preadipocytes lowered systemic inflam - mation and fever [44–49].”
Cellular senescence: A novel mechanism of therapeutic resistance in prostate cancer
Lin, C., Hadfield, M. J., Rathore, A., Pinho-Schwermann, M. P., Zhang, S., Lu, S., den Hollander, P., Mani, S. A., Seyhan, A. A., Santopietro, A., et al. (2025) · Cancer Treatment Reviews · doi:10.1016/j.ctrv.2025.103061 · Cited by 4
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“Because IL-6 and TNF-α can drive EMT and drug resistance (36, 37), we utilized genetic and pharmacogic approaches to block SASP (38, 39).”
InfluentialYang, T.-J., Chen, T.-X., Zhang, Y., Luo, Y., & Wen, P.-P. (2025) · Frontiers in Medicine · doi:10.3389/fmed.2025.1653037 · Cited by 3
“This makes it a logical hypothesis that senolytics, or senomorphics that modulate the inflammatory secretory phenotype (144), could disrupt the local pathological cascade.”
Natural killer cell-based senotherapy: a promising strategy for healthy aging
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“In senescent fi broblasts and irradiated tissues, these agents reduced proin fl ammatory cytokines and improved regeneration (162).”
Senescence associated osteoarthritis: Emerging therapeutics and future directions
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Osteoimmune senescence in aging-related bone diseases
Li, H., Yang, Y., & Zhu, H. (2026) · Frontiers in Immunology · doi:10.3389/fimmu.2026.1892334 · Cited by 5
“JAK/STAT signaling is another SASP-related pathway with therapeutic relevance because JAK inhibition reduces senescence-associated in fl ammatory mediators in aging models (64).”
InfluentialExploiting senescence as a therapeutic target in osteoarthritis
Larbie, C., & Raza, U. (2024) · Asia-Pacific Journal of Pharmacotherapy & Toxicology · doi:10.32948/ajpt.2024.11.19 · Cited by 4
New approach methodologies in Crohn’s disease link molecular disease subtypes to clinical outcomes
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Consequences of senotherapies for tissue repair and reprogramming
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Son, Y. H., Kim, W. J., Shin, Y. J., Lee, S.-M., Lee, B., Lee, K., Lee, S., Kim, K. J., & Kwon, K. (2023) · Experimental Gerontology · doi:10.1016/j.exger.2023.112273 · Cited by 3
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“…for myelofibrosis and other inflammatory conditions, which has been shown to suppress the pro-inflammatory SASP from senescent human primary preadipocytes and human vascular endothelial cells (hUVEC); treatment of aged mice with ruxolitinib reduced systemic inflammation and alleviated frailty [77].”
BackgroundGerosuppressive and Senolytic Nutrients
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Cytokine Receptors and Their Ligands
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A single nuclei atlas of aging human abdominal subcutaneous white adipose tissuePreprint
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“The overactivation of this pathway can lead to the inhibition of pro-apoptotic factors and induction of cellular senescence 68, 69 .”
BackgroundBene, M. R., Chung, T., Fountain, W. A., Rosales‐Soto, G., Hernández‐Ochoa, E. O., Antonescu, C. M., Florea, L., Jeong, S. J., Le, A., Xue, Q., et al. (2025) · bioRxiv (Cold Spring Harbor Laboratory) · doi:10.1101/2025.07.30.667744 · Cited by 3
“Notably, ruxoliPnib has been shown to enhance physical performance in naturally aged and progeria mouse models, as well as to increase muscle mass in paPents with myelofibrosis (Xu et al. 2015; Griveau et al. 2020; Lucijanic et al. 2021).”
The role of senescence in cancer therapy-associated cardiovascular toxicity
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Aversa, Z., Frank, R. D., Geske, J. R., White, T. A., Heeren, A. A., Kapoor, E., Rocca, W. A., Schafer, M. J., Fields, J. A., Kantarci, K., et al. (2025) · Maturitas · doi:10.1016/j.maturitas.2025.108606 · Cited by 2
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The Role of Senolytics in Osteoporosis
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“…β -galactosidase-activated prodrugs and nanoparticles [73,74], apoptosis induction via sodium–potassium pump (Na+/K+-ATPase) modulation [75], SASP inhibition [76], and immune-mediated clearance approaches, including chimeric antigen receptor T cells, antibody–drug conjugates, and vaccines [77].”
o-Vanillin enhances bone health and fracture healing by inhibiting cellular senescence in aging mice
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Conquering aging-related immunosenescence and tumor immune escape
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“JAK inhibitors, on the other hand, directly interfere with the downstream signaling of key in fl ammatory cytokines such as IL-6 and IL-8, thereby attenuating the persistent disruptive in fl uence of SnCs on the immune microenvironment without affecting cell viability (150).”
Self-citationΠαπανικολάου, Κ., Yadav, A., Mankowski, R. T., Alexander, M. S., Gamboa, J. L., Thalacker‐Mercer, A. E., Dungan, C. M., & Englund, D. A. (2026) · American Journal of Physiology-Cell Physiology · doi:10.1152/ajpcell.00876.2025 · Cited by 2
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“…senescent cell burden by senolytic, senomorphic, or genetic manipulations in aging models has been shown to improve adipose tissue function, including insulin sensitivity, glucose tolerance and adipogenesis (Palmer et al. 2019; Wang et al. 2022; Xu, Palmer, et al. 2015; Xu, Tchkonia, et al. 2015).”
Liu, F.-Y., Huang, Y.-P., Li, Z.-Q., Li, X., Zhang, J.-S., Guan, L., & Qiao, W.-J. (2026) · Frontiers in Medicine · doi:10.3389/fmed.2026.1746161 · Cited by 2
“Additionally, senomorphic strategies that suppress SASP (such as JAK inhibitors and NF-κ B inhibitors) may attenuate the detrimental paracrine effects of senescent cells (142).”
Wang, E., Wang, Y., Xu, Z., Zhang, Z., Wang, J., Jiang, Y., & Zhao, C. (2026) · Phytotherapy Research · doi:10.1002/ptr.70387 · Cited by 2
“Given the established role of JAK-STAT signaling in cytokine responses, SASPs, ROS-related DNA damage, and chronic inflammation (Xu et al. 2015, 2016), its suppression may further contribute to the protective effects of HT.”
Wei, R., Liu, D., Shu, K., & Zhu, H. (2026) · Drug Resistance Updates · doi:10.1016/j.drup.2026.101444 · Cited by 2
Cellular senescence during aging and chronic liver diseases
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“Fat-derived ASCs (preadipocytes) were isolated from healthy lean kidney donors aged 39 ± 3.3 y with a body mass index of 26.6 ± 0.9 (mean ± SEM) [24].”
MethodInfluentialSelf-citationCellular senescence and PAPP-A
Conover, C. A. (2025) · Growth Hormone & IGF Research · doi:10.1016/j.ghir.2025.101637 · Cited by 2
Senotherapy: Implications for Transplantation
Jaros, M., & Melk, A. (2025) · Transplantation · doi:10.1097/tp.0000000000005291 · Cited by 2
Metadata
- Authors
- Xu, M., Tchkonia, T., Ding, H., Ogrodnik, M., Lubbers, E. R., Pirtskhalava, T., White, T. A., Johnson, K. O., Stout, M. B., Mezera, V., Giorgadze, N., Jensen, M. D., LeBrasseur, N. K., & Kirkland, J. L.
- Affiliations
- Mayo Clinic (US)
- Robert and Arlene Kogod Center on Aging,Mayo Clinic, Rochester, MN 55905;
- ORCID
- Venue
- Proceedings of the National Academy of Sciences
- Publisher
- National Academy of Sciences
- Published
- 2015-11-02
- Volume
- 112
- Issue
- 46
- Pages
- E6301-10
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- PMC
- PMC4655580
- OpenAlex
- W1932046626
- Cited by
- 915
- References
- 68
- Citations by year
- 2026: 104 · 2025: 110 · 2024: 112 · 2023: 98 · 2022: 110 · 2021: 115 · 2020: 72 · 2019: 70 · 2018: 59 · 2017: 30 · 2016: 33 · 2015: 1
- FWCI
- 30.20
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Proceedings of the National Academy of Sciences (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Newcastle University ePrints (Newcastle Univesity)
- Funders
- HHS | NIH | National Institute on Aging (AG041122, AG013925)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Telomeres, Telomerase, and Senescence
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
- Health Sciences › Medicine › Geriatrics and Gerontology › Sirtuins and Resveratrol in Medicine
- Keywords
- JAK inhibition, cellular senescence, senescence-associated secretory phenotype, frailty, aging, age-related inflammation, adipose tissue, preadipocytes, macrophage migration, conditioned medium, endothelial cells, physical function, JAK inhibitors
- MeSH terms
- Adipose Tissue, Animals, Cell Movement, Extracellular Matrix, Humans, Macrophages, Signal Transduction, Cellular Senescence, Adipocytes, RNA, Small Interfering, Mice, Janus Kinases, Human Umbilical Vein Endothelial Cells
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