Cited by 515Autophagy in Disease and TherapyCytokine Signaling Pathways and InteractionsUbiquitin and proteasome pathways

The role of STAT3 in autophagy

Open access
You, Liangkun, Wang, Zhanggui, Li, Hongsen, Shou, Jiawei, Jing, Zhao, Xie, Jiansheng, Sui, Xinbing, Pan, Hongming +1 more·2015·Autophagy

Abstract

Autophagy is an evolutionarily conserved process in eukaryotes that eliminates harmful components and maintains cellular homeostasis in response to a series of extracellular insults. However, these insults may trigger the downstream signaling of another prominent stress responsive pathway, the STAT3 signaling pathway, which has been implicated in multiple aspects of the autophagic process. Recent reports further indicate that different subcellular localization patterns of STAT3 affect autophagy in various ways. For example, nuclear STAT3 fine-tunes autophagy via the transcriptional regulation of several autophagy-related genes such as BCL2 family members, BECN1, PIK3C3, CTSB, CTSL, PIK3R1, HIF1A, BNIP3, and microRNAs with targets of autophagy modulators. Cytoplasmic STAT3 constitutively inhibits autophagy by sequestering EIF2AK2 as well as by interacting with other autophagy-related signaling molecules such as FOXO1 and FOXO3. Additionally, the mitochondrial translocation of STAT3 suppresses autophagy induced by oxidative stress and may effectively preserve mitochondria from being degraded by mitophagy. Understanding the role of STAT3 signaling in the regulation of autophagy may provide insight into the classic autophagy model and also into cancer therapy, especially for the emerging targeted therapy, because a series of targeted agents execute antitumor activities via blocking STAT3 signaling, which inevitably affects the autophagy pathway. Here, we review several of the representative studies and the current understanding in this particular field.

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Crossref · 10.1080/15548627.2015.1017192

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  • STAT3 is indispensable for physiologic leptin actions, and STAT3 dysfunction in any direction could cause pathophysiological alterations in mice and humans.

    “Overall, STAT3 is indispensable for physiologic leptin actions, and STAT3 dysfunction in any direction could cause pathophysiological alterations in mice and humans”

    From Targeting Janus Kinases and Signal Transducer and Activator of Transcription 3 To Treat Inflammation, Fibrosis, and Cancer: Rationale, Progress, and Caution (2020) · cites this paper as You et al., 2015

    The Introduction reports that constitutive STAT3 activation is associated with malignant tumors and that disruption of the mouse Stat3 gene causes embryonic lethality. These examples support a narrower claim that altered STAT3 function can have pathological consequences, but the paper does not address whether STAT3 is indispensable for physiological leptin actions or establish the claimed effects of dysfunction in any direction across mice and humans (searched: leptin actions, leptin receptor, pathophysiological alterations). (LLM, conf=0.78)

    Experimental — accuracy not yet measured
  • STAT3 undergoes post-translational modifications including methylation, acetylation, ubiquitination, ISGylation, and SUMOylation.

    “In addition to tyrosine phosphorylation, STAT3 also undergoes a variety of other post-translational modifications, including methylation, acetylation, ubiquitination, IFN-stimulated gene (ISG)-ylation, and small ubiquitin-related modifiers (SUMOs)-conjugation (SUMOylation) (Kojima et al., 2013; You et al., 2015; Zouein et al., 2015; Avalle and Poli, 2018; Hu et al., 2018) with various effects on”

    From Targeting Janus Kinases and Signal Transducer and Activator of Transcription 3 To Treat Inflammation, Fibrosis, and Cancer: Rationale, Progress, and Caution (2020) · cites this paper as You et al., 2015

    The sections on tyrosine and serine phosphorylation of STAT3 discuss those modifications, but do not address any of the five modifications named in the claim. Searches for methylation, acetylation, ubiquitination, ISGylation, and SUMOylation found no supporting passage in our copy. (LLM, conf=0.76)

    Experimental — accuracy not yet measured
  • At the molecular level, IL-6 increases the activity of DNMT1 with activating effects on JAK/STAT3, NF-κB and PI3K/AKT/mTOR signaling pathways, affecting regulation of autophagy-related functions required to maintain cellular homeostasis under stress such as a prenatal insult.

    “At the molecular level, IL-6 increases the activity of DNA methyltransferases 1 (DNMT1) with activating effects on the JAK/STAT3, NF-κB and PI3K/AKT/mTOR signaling pathways [144–148] affecting the regulation of autophagy-related functions, that are required to maintain cellular homeostasis under stress [149], such as a prenatal insult.”

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Research works printed but not linked: 1

  1. [83]Pratt J, Annabi B. Induction of autophagy biomarker BNIP3 requires a JAK2/STAT3 and MT1-MMP signaling interplay in Concanavalin-A-activated U87 glioblastoma cells. Cellular Signal 2014; 26: 917- 24; PMID:24462646; http://dx.doi.org/ 10.1016/j.cellsig.2014.01.012 24462646 · DOI

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Authors
You, L., Wang, Z., Li, H., Shou, J., Jing, Z., Xie, J., Sui, X., Pan, H., & Han, W.
Affiliations
  • Sir Run Run Shaw Hospital (CN)
  • Zhejiang University (CN)
Corresponding author
  • Pan, Hongming
  • Han, Weidong
Venue
Autophagy
Published
2015-05-04
Volume
11
Issue
5
Pages
729-739
ISSN
  • 1554-8627 (ISSN-L)
  • 1554-8635
OpenAlex
W1853894947
Cited by
515
References
91
Citations by year
2026: 29 · 2025: 57 · 2024: 69 · 2023: 47 · 2022: 85 · 2021: 68 · 2020: 55 · 2019: 36 · 2018: 25 · 2017: 24 · 2016: 15 · 2015: 4
FWCI
2.95
Type
journal article
Language
en
Open access
Licence
cc-by-nc
Locations
  • Autophagy (publishedVersion, cc-by-nc)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Health Sciences › Medicine › Oncology › Cytokine Signaling Pathways and Interactions
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
Keywords
STAT3, STAT3 signaling, PKR, FOXO1, FOXO3, mitophagy, oxidative stress, HIF1A, Bcl-2 family proteins, PIK3C3, Beclin-1, PIK3R1, microRNA, cancer therapy, targeted therapy
MeSH terms
Animals, Autophagy, Humans, Mitochondria, Models, Biological, Neoplasms, Subcellular Fractions, STAT3 Transcription Factor

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