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Updated: Aug 17, 2026
A Next-generation Tissue Microarray (ngTMA) Protocol for Biomarker Studies
Published on: September 23, 2014
[Tissue microarrays in immunohistochemistry]
Insights
Tissue microarrays enable immunohistochemical analysis of multiple tissue samples. This study details their construction and application in immunophenotyping non-Hodgkin
Area of Science:
- Histopathology
- Immunohistochemistry
- Oncology
Context:
- Tissue microarrays (TMAs) facilitate high-throughput analysis of archival tissues.
- Immunohistochemistry (IHC) is crucial for diagnosing and classifying lymphomas.
- Archival formalin-fixed paraffin-embedded (FFPE) tissues are valuable resources for retrospective studies.
Purpose:
- To describe the construction and modification of tissue microarrays.
- To detail the immunophenotyping of non-Hodgkin's lymphoma (NHL) cases using TMAs.
- To discuss technical challenges encountered during TMA construction and IHC analysis.
Summary:
- This study constructed and utilized tissue microarrays (TMAs) for the immunohistochemical analysis of 252 archival non-Hodgkin's lymphoma (NHL) cases.
- Sixteen TMAs were created, encompassing diffuse small cell, diffuse large cell, and blastic NHL morphologies.
- The process involved immunophenotyping these NHL cases and addressing technical challenges in TMA construction and execution.
Impact:
- Tissue microarrays offer a powerful method for analyzing large cohorts of archival tissue samples efficiently.
- The findings highlight the importance of precise TMA design and execution for obtaining reliable immunohistochemical results.
- This approach aids in the detailed characterization and classification of hematological malignancies like NHL.
Abstract:
Tissue microarrays are an ordered array of tissue cores in a paraffin block. They permit immunohistochemical analysis of numerous sections of archival formalin fixed paraffin embedded tissues. Short information on the construction is given and the authors' modification is described. Sixteen tissue microarrays out of 252 archival cases of non-Hodgkin's lymphoma with diffuse small cell, diffuse large cell and blastic morphology were immunophenotyped. Leading technical problems are discussed. The design and precision in execution of a tissue microarray have a role to obtain valid results.
