Tissue microarray

Source: Wikipedia, the free encyclopedia.
A Tissue MicroArray Block
0.6 mm core Tissue MicroArray Block
A Tissue MicroArray Section

Tissue microarrays (also TMAs) consist of

tissue cores are assembled in array fashion to allow multiplex histological analysis
.

History

The major limitations in molecular

reagents
and limited patient sample size. The technique of tissue microarray was developed to address these issues.

Multi-tissue blocks were first introduced by H. Battifora in 1986 with his so-called “multitumor (sausage) tissue block" and modified in 1990 with its improvement, "the checkerboard tissue block" . In 1998, J. Kononen and collaborators developed the current technique, which uses a novel sampling approach to produce tissues of regular size and shape that can be more densely and precisely arrayed.

Procedure

In the tissue microarray technique, a hollow needle is used to remove tissue cores as small as 0.6 mm in diameter from regions of interest in paraffin-embedded tissues such as clinical

fluorescent in situ hybridization. Tissue microarrays are particularly useful in analysis of cancer
samples.

One variation is a Frozen tissue array.

Use in research

The use of tissue microarrays in combination with

cancer biomarkers in most forms of cancer, including lung, breast, colorectal and renal cell cancer.[2][3][4][5]

Immunohistochemistry combined with tissue microarrays has also been used with success in large scale efforts to create a map of protein expression on a more global scale.[6]

See also

References

  1. ^ "Yale University Core Tissue MicroArray Facility". Archived from the original on 10 May 2009.
  2. S2CID 21225276
    .
  3. .
  4. .
  5. .
  6. .
  • Battifora H: The multitumor (sausage) tissue block: novel method for immunohistochemical antibody testing. Lab Invest 1986, 55:244-248.
  • Battifora H, Mehta P: The checkerboard tissue block. An improved multitissue control block. Lab Invest 1990, 63:722-724.
  • Kononen J, Bubendorf L, Kallioniemi A, Barlund M, Schraml P, Leighton S, Torhorst J, Mihatsch MJ, Sauter G, Kallioniemi OP: Tissue microarrays for high-throughput molecular profiling of tumor specimens. Nat Med 1998, 4:844-847.

External links