Cited by 137HER2/EGFR in Cancer ResearchCytokine Signaling Pathways and InteractionsNF-κB Signaling Pathways

HER2 overexpression elicits a proinflammatory IL-6 autocrine signaling loop that is critical for tumorigenesis

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Hartman, Zachary C., Yang, Xiao-Yi, Glass, Oliver, Lei, Gangjun, Osada, Takuya, Dave, Sandeep S., Morse, Michael A., Clay, Timothy M. +1 more·2011·Cancer Research

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Abstract

HER2 overexpression occurs in approximately 25% of breast cancers, where it correlates with poor prognosis. Likewise, systemic inflammation in breast cancer correlates with poor prognosis, although the process is not understood. In this study, we explored the relationship between HER2 and inflammation, comparing the effects of overexpressing wild-type or mutated inactive forms of HER2 in primary human breast cells. Wild-type HER2 elicited a profound transcriptional inflammatory profile, including marked elevation of interleukin-6 (IL-6) expression, which we established to be a critical determinant of HER2 oncogenesis. Mechanistic investigations revealed that IL-6 secretion induced by HER2 overexpression activated Stat3 and altered gene expression, enforcing an autocrine loop of IL-6/Stat3 expression. Both mouse and human in vivo models of HER2-amplified breast carcinoma relied critically on this HER2–IL-6–Stat3 signaling pathway. Our studies offer the first direct evidence linking HER2 to a systemic inflammatory mechanism that orchestrates HER2-mediated tumor growth. We suggest that the HER2–IL-6–STAT3 signaling axis we have defined in breast cancer could prompt new therapeutic or prevention strategies for treatment of HER2-amplified cancers. Cancer Res; 71(13); 4380–91. ©2011 AACR.

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  • HER2 expression in breast cancer activates an IL-6 autocrine signaling loop to activate STAT3, which is critical for tumorigenesis.

    “Its expression in breast cancer activates an IL-6 autocrine signaling loop to activate STAT3, which is critical for tumorigenesis (321).”

    From IL-6 in inflammation, autoimmunity and cancer (2021) · cites this paper as [321]

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Authors
Hartman, Z. C., Yang, X.-Y., Glass, O., Lei, G., Osada, T., Dave, S. S., Morse, M. A., Clay, T. M., & Lyerly, H. K.
Affiliations
  • Duke University (US)
  • Authors' Affiliations: 1Duke Comprehensive Cancer Center, Departments of Surgery, 2Medicine, and 3Immunology, Duke University Medical Center, Durham, North Carolina
Venue
Cancer Research
Published
2011-06-30
Volume
71
Issue
13
Pages
4380-4391
ISSN
  • 0008-5472 (ISSN-L)
  • 1538-7445
OpenAlex
W2103315206
Cited by
137
References
41
Citations by year
2026: 7 · 2025: 7 · 2024: 3 · 2023: 4 · 2022: 6 · 2021: 8 · 2020: 12 · 2019: 5 · 2018: 7 · 2017: 11 · 2016: 11 · 2015: 13 · 2014: 12 · 2013: 11 · 2012: 13
FWCI
6.78
Type
journal article
Language
en
Open access
Locations
  • Cancer Research (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Cancer Institute (R01CA95447, P01CA078673, BC050221, R01CA095447, P50 CA89496-01, P30CA014236)
Topics
  • Health Sciences › Medicine › Oncology › HER2/EGFR in Cancer Research
  • Health Sciences › Medicine › Oncology › Cytokine Signaling Pathways and Interactions
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › NF-κB Signaling Pathways
Keywords
HER2 overexpression, breast cancer, interleukin-6, STAT3 signaling, autocrine signaling, systemic inflammation, carcinogenesis, HER2 mutation, inflammatory gene expression
MeSH terms
Animals, Cell Transformation, Neoplastic, Humans, Inflammation, Mice, Inbred BALB C, Phosphorylation, Transcription Factors, Signal Transduction, Interleukin-6, Up-Regulation, Gene Expression Regulation, Neoplastic, 3T3 Cells, Mice, SCID, Mice, Inbred NOD, Receptor, ErbB-2, Erb-b2 Receptor Tyrosine Kinases, Cell Line, Tumor, Cell Growth Processes, STAT3 Transcription Factor, Mice

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