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Related Experiment Video

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Detection of Human Leukocyte Antigen Biomarkers in Breast Cancer Utilizing Label-free Biosensor Technology
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Immune profiling in human breast cancer using high-sensitivity detection and analysis techniques.

Brendon J Coventry1, Michael J Weightman1, John Bradley2

  • 1Discipline of Surgery, University of Adelaide, Royal Adelaide Hospital, Adelaide, South Australia 5000, Australia.

JRSM Open
|October 15, 2015
PubMed
Summary

Breast cancer tissue shows higher immune cell infiltration, particularly CD4 T-cells, compared to normal tissue. High-sensitivity analysis accurately characterized these tumor-infiltrating lymphocytes (TILs).

Keywords:
CD16CD25CD3CD4CD45CD56CD8HLATILVIAbreast cancercellular quantitationhigh sensitivity immunostainingtumour-infiltrating leukocytes/lymphocytesvideo image analysis

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Area of Science:

  • Immunology
  • Oncology
  • Pathology

Background:

  • Immune cell infiltration in breast cancer is crucial for tumor progression and response to therapy.
  • Accurate characterization of tumor-infiltrating lymphocytes (TILs) aids in understanding the tumor microenvironment.
  • High-sensitivity detection methods improve the analysis of immune cell populations in tissues.

Purpose of the Study:

  • To evaluate and compare the immune profiles of human breast cancer tissues and normal breast tissues.
  • To characterize the immunophenotype of TILs in breast carcinoma using advanced detection techniques.

Main Methods:

  • Comparative analysis of breast tissue samples from women over 18 years old.
  • Utilized high-sensitivity detection and image analysis for evaluating leukocyte density and specific immune cell subgroups.
  • Immunophenotyping of tumor-infiltrating lymphocytes (TILs) and epithelial cells.

Main Results:

  • Breast cancers exhibited significantly higher leukocyte density, including lymphocytes and macrophages, compared to normal tissues.
  • CD3, CD4, CD45RO, CD45RA, CD45, and HLA Class II were significantly expressed on breast tumor tissues.
  • CD4 T-cells, predominantly of memory phenotype, were found in breast carcinoma, while normal tissues showed minimal leukocyte infiltration.

Conclusions:

  • High-sensitivity techniques enable precise immune profiling of TILs in breast cancer.
  • Breast carcinoma is characterized by a predominance of CD4 memory T-cells and significant TIL infiltration.
  • Further studies correlating these immune profiles with clinical outcomes are ongoing.