Annals of Surgical Oncology

, Volume 14, Issue 3, pp 1237–1242 | Cite as

Expression of Tumor Antigens and Heat-Shock Protein 70 in Breast Cancer Cells After High-Intensity Focused Ultrasound Ablation

  • Feng Wu
  • Zhi-Biao Wang
  • You-De Cao
  • Qiang Zhou
  • Ying Zhang
  • Zhong-Lin Xu
  • Xue-Qiang Zhu
Article

ABSTRACT

Background

Previous results have shown that high-intensity focused ultrasound (HIFU) ablation can potentially activate a host antitumor immunity. The goal of this study was to investigate whether the tumor antigens expressed on breast cancer cells may be preserved after HIFU treatment, and to explore the potential mechanisms regarding the enhanced antitumor response.

Methods

The primary lesion in 23 patients with biopsy-proven breast cancer were treated with HIFU, then submitted to modified radical mastectomy. By using biotin-streptavidin-peroxidase immunohistochemical technology, a variety of cellular molecules expressed on breast cancer cells, including tumor antigens and heat-shock protein 70 (HSP-70), were stained in all breast specimens. A complete absence of staining was recorded as negative, and immunoreaction of the tumor cells was considered to be positive for antigen expression.

Results

Nuclear positivity of breast cancer cells for proliferating cell nuclear antigen, estrogen receptor, and progesterone receptor was detected in 0%, 9%, and 9% of the treated samples, respectively. The positive rate of cytoplasmic staining for matrix metalloproteinase 9, carbohydrate antigen 15–3, vascular endothelial growth factor, transforming growth factors β1 and β2, interleukin 6, and interleukin 10 was 0%, 52%, 30%, 57%, 70%, 48%, and 61% in the treated cancer cells, respectively. The positive rate of cellular membrane staining for epithelial membrane antigen, CD44v6, and HSP−70 was 100%, 0%, and 100% in the zones of treated cancer cells, respectively.

Conclusions

After HIFU ablation, some tumor antigens remained in the tumor debris. This could provide a potential antigen source to stimulate antitumor immune response.

Keywords

High-intensity focused ultrasound Breast cancer Immune Tumor antigens Heat-shock protein Thermal ablation 

Notes

Acknowledgment

We thank Dr. Tom Leslie at the Churchill Hospital of Oxford, Oxford, England, UK, for his help with the language.

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Copyright information

© Society of Surgical Oncology 2006

Authors and Affiliations

  • Feng Wu
    • 1
    • 2
  • Zhi-Biao Wang
    • 1
  • You-De Cao
    • 1
  • Qiang Zhou
    • 1
  • Ying Zhang
    • 1
  • Zhong-Lin Xu
    • 1
  • Xue-Qiang Zhu
    • 1
  1. 1.Clinical Center for Tumor Therapy of 2nd Affiliated Hospital and Institute of Ultrasonic Engineering in MedicineChongqing University of Medical SciencesChongqingChina
  2. 2.HIFU UnitThe Churchill HospitalOxfordUK

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