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Okroj M, Holmquist E, Nilsson E, Anagnostaki L, Jirström K, Blom AM. Local expression of complement factor I in breast cancer cells correlates with poor survival and recurrence. Cancer Immunol Immunother 2015; 64:467-78. [PMID: 25618258 PMCID: PMC11029147 DOI: 10.1007/s00262-015-1658-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Accepted: 01/12/2015] [Indexed: 01/23/2023]
Abstract
Tumor cells often evade killing by the complement system by overexpressing membrane-bound complement inhibitors. However, production of soluble complement inhibitors in cells other than hepatocytes was rarely reported. We screened several breast cancer cell lines for expression of soluble complement inhibitor, complement factor I (FI). We also analyzed local production of FI in tissue microarrays with tumors from 130 breast cancer patients by in situ hybridization and immunohistochemistry. We found expression of FI in breast adenocarcinoma cell line MDA-MB-468 and confirmed its functional activity. Expression of FI at mRNA and protein levels was also confirmed in tumor cells and tumor stroma, both in fibroblasts and infiltrating immune cells. Multivariate Cox regression analyses revealed that high expression of FI protein in tumor cells was correlated with significantly shorter cancer-specific survival (HR 2.8; 95 % CI 1.0-7.5; p = 0.048) and recurrence-free survival (HR 3.4; 95 % CI 1.5-7.4; p = 0.002). High FI expression was positively correlated with tumor size (p < 0.001), and Nottingham histological grade (p = 0.015) and associated with estrogen and progesterone receptor status (p = 0.03 and p = 0.009, respectively). Our data show that FI is expressed in breast cancer and is associated with unfavorable clinical outcome.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Biomarkers, Tumor/genetics
- Biomarkers, Tumor/metabolism
- Blotting, Western
- Breast Neoplasms/metabolism
- Breast Neoplasms/mortality
- Breast Neoplasms/pathology
- Carcinoma, Ductal, Breast/metabolism
- Carcinoma, Ductal, Breast/mortality
- Carcinoma, Ductal, Breast/pathology
- Complement Factor I/genetics
- Complement Factor I/metabolism
- Female
- Follow-Up Studies
- Humans
- Immunoenzyme Techniques
- In Situ Hybridization
- Middle Aged
- Neoplasm Recurrence, Local/metabolism
- Neoplasm Recurrence, Local/mortality
- Neoplasm Recurrence, Local/pathology
- Neoplasm Staging
- Prognosis
- RNA, Messenger/genetics
- Real-Time Polymerase Chain Reaction
- Receptors, Estrogen/genetics
- Receptors, Estrogen/metabolism
- Receptors, Progesterone/genetics
- Receptors, Progesterone/metabolism
- Reverse Transcriptase Polymerase Chain Reaction
- Survival Rate
- Tissue Array Analysis
- Tumor Cells, Cultured
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Affiliation(s)
- Marcin Okroj
- Section of Medical Protein Chemistry, Department of Translational Medicine, Lund University, Inga Maria Nilssons Street 53, Floor 4, 20502 Malmö, Sweden
- Laboratory Medicine, Clinical Chemistry, Region Skåne, Inga Maria Nilssons Street 53, 20502 Malmö, Sweden
| | - Emelie Holmquist
- Section of Medical Protein Chemistry, Department of Translational Medicine, Lund University, Inga Maria Nilssons Street 53, Floor 4, 20502 Malmö, Sweden
| | - Elise Nilsson
- Section of Pathology, Department of Laboratory Medicine Malmö, Lund University, Jan Waldenström Street 59, 20502 Malmö, Sweden
| | - Lola Anagnostaki
- Laboratory Medicine, Clinical Pathology, Region Skåne, Jan Waldenström Street 59, 20502 Malmö, Sweden
| | - Karin Jirström
- Division of Oncology and Pathology, Department of Clinical Sciences Lund, Lund University, Sölvegatan 25, 22185 Lund, Sweden
| | - Anna M. Blom
- Section of Medical Protein Chemistry, Department of Translational Medicine, Lund University, Inga Maria Nilssons Street 53, Floor 4, 20502 Malmö, Sweden
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