Cited by 183Chemokine receptors and signalingConnective Tissue Growth Factor ResearchBreast Cancer Treatment Studies

CXC chemokines located in the 4q21 region are up-regulated in breast cancer

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Bieche, I., Chavey, C., Andrieu, C., Busson, M., Vacher, S., Le Corre, L., Guinebretiere, J.-M., Burlinchon, S. +2 more·2007·Endocrine Related Cancer

Abstract

Recent data suggest that chemokines could be essential players in breast carcinogenesis. We previously showed that the CXC chemokine CXCL8 (interleukin-8) was overexpressed in estrogen receptor alpha (ERalpha)-negative breast cell lines. Analysis of CXCL8 chromosomal location showed that several CXC chemokines (CXCL1, CXCL2, CXCL3, CXCL4, CXCL4V1, CXCL5, CXCL6, CXCL7, and CXCL8) were localized in the same narrow region (360 kb in size) of chromosome 4. We thus hypothesized that they could belong to the same cluster. Quantification of these chemokines in breast tumors showed that samples expressing high CXCL8 also produced elevated levels of CXCL1, CXCL3, and CXCL5, and displayed low content of ERalpha. CXCL1, CXCL2, CXCL3, CXCL5, and CXCL8 were co-regulated both in tumors and in breast cancer cell lines. CXCL5 and CXCL8 were mainly produced by epithelial cells, whereas CXCL1, CXCL2, and CXCL3 had a high expression in blood cells. The overexpression of these chemokines in tumor cells was not the result of gene amplification, but rather of an enhanced gene transcription. Our data suggest that high CXCL8 expression in tumors is mainly correlated to activating protein-1 (AP-1) pathway and to a minor extent to NF-kappaB pathway. Interestingly, CXCL1, CXCL2, CXCL3, CXCL5, CXCL6, and CXCL8 chemokines were present at higher levels in metastases when compared with grade I and III biopsies. High levels of CXCL8, CXCL1, and CXCL3 accounted for a shorter relapse-free survival of ERalpha-positive patients treated with tamoxifen. In summary, we present evidences that multiple CXC chemokines are co-expressed in CXCL8-positive breast tumors. In addition, these chemokines could account for the higher aggressiveness of these types of tumors.

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  • High expression of CXCL1 in breast tumors without gene amplification is also possible.

    “Additionally, high expression of CXCL1 in breast tumors without gene amplification is also possible (Bieche et al., 2007).”

    From A CXCL1 Paracrine Network Links Cancer Chemoresistance and Metastasis (2012) · cites this paper as Bieche et al., 2007

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Authors
Bieche, I., Chavey, C., Andrieu, C., Busson, M., Vacher, S., Le Corre, L., Guinebretiere, J.-M., Burlinchon, S., Lidereau, R., & Lazennec, G.
Affiliations
Inserm (FR)
Venue
Endocrine Related Cancer
Published
2007-12-01
Volume
14
Issue
4
Pages
1039-1052
ISSN
  • 1351-0088 (ISSN-L)
  • 1479-6821
OpenAlex
W2163873875
Cited by
183
References
49
Citations by year
2026: 4 · 2025: 3 · 2024: 7 · 2023: 11 · 2022: 14 · 2021: 19 · 2020: 10 · 2019: 10 · 2018: 11 · 2017: 8 · 2016: 12 · 2015: 8 · 2014: 7 · 2013: 13 · 2012: 14
FWCI
2.87
Type
journal article
Language
en
Open access
Locations
  • Endocrine Related Cancer (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion, other-oa)
Funders
  • Ligue Contre le Cancer
  • Association pour la Recherche sur les Tumeurs de la Prostate
Topics
  • Health Sciences › Medicine › Oncology › Chemokine receptors and signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Connective Tissue Growth Factor Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Breast Cancer Treatment Studies
Keywords
CXC chemokines, breast cancer, chromosome 4q21, interleukin-8, estrogen receptor alpha, metastasis, AP-1 pathway, NF-κB signaling, gene transcription, tamoxifen, relapse-free survival, tumor aggressiveness
MeSH terms
Aged, Breast Neoplasms, Cells, Cultured, Chromosome Mapping, Chromosomes, Human, Pair 4, Endothelium, Vascular, Female, Humans, Lymphatic Metastasis, Middle Aged, Umbilical Veins, Up-Regulation, Gene Expression Regulation, Neoplastic, Disease-Free Survival, Chemokines, CXC, Reverse Transcriptase Polymerase Chain Reaction

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