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A Next-generation Tissue Microarray ngTMA Protocol for Biomarker Studies

A Next-generation Tissue Microarray ngTMA Protocol for Biomarker Studies

Published on: September 23, 2014

A next-generation tissue microarray (ngTMA) protocol for biomarker studies.

Inti Zlobec¹, Guido Suter², Aurel Perren²

¹Institute of Pathology, University of Bern; inti.zlobec@pathology.unibe.ch.

Journal of Visualized Experiments : Jove

|October 7, 2014

Summary

This summary is machine-generated.

Next-generation tissue microarrays (ngTMA) offer a precise, automated solution for biomarker research, significantly improving upon conventional methods. This digital pathology approach enhances tissue microarray construction speed and quality for clinical applications.

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Last Updated: Apr 23, 2026

A Next-generation Tissue Microarray ngTMA Protocol for Biomarker Studies

A Next-generation Tissue Microarray ngTMA Protocol for Biomarker Studies

Published on: September 23, 2014

Manual Construction of a Tissue Microarray using the Tape Method and a Handheld Microarrayer

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Published on: June 10, 2022

Building Up a High-throughput Screening Platform to Assess the Heterogeneity of HER2 Gene Amplification in Breast Cancers

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Published on: December 5, 2017

Area of Science:

Biopathology
Digital Pathology
Biomarker Research

Background:

Tissue microarrays (TMAs) are crucial for biomarker research but conventional construction is labor-intensive and imprecise.
Automated methods are needed to improve the efficiency and accuracy of TMA production.

Purpose of the Study:

To outline a protocol for next-generation tissue microarrays (ngTMA) utilizing digital pathology and automation.
To demonstrate the feasibility and benefits of ngTMA in a cohort of 134 metastatic colorectal cancer patients.

Main Methods:

Digital scanning of histological slides and web-based annotation of specific tissue regions.
Automated tissue microarraying using donor blocks and recipient blocks guided by digital slide images.
Consideration of histological, statistical, and logistical factors for optimal TMA design.

Main Results:

The ngTMA protocol integrates planning, digital pathology, and automated arraying for precise tissue core transfer.
In an example with 134 patients, 12 ngTMAs with 4,556 spots were produced, incorporating diverse tissue types and metastatic sites.
Annotation time was 2-3 minutes per case, with arraying taking 15-20 hours.

Conclusions:

Next-generation tissue microarrays (ngTMA) offer a precise, flexible, and rapid alternative to conventional TMA construction.
This automated approach significantly enhances the quality and efficiency of TMAs for clinical and translational research.
ngTMA facilitates detailed biomarker analysis by enabling accurate selection and inclusion of specific tissue regions.