Isolation of cellular material under microscopic visualization

C - Chemistry – Metallurgy – 12 – Q

Patent

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Details

C12Q 1/24 (2006.01) G01N 1/28 (2006.01) G01N 33/50 (2006.01) C12Q 1/25 (2006.01) C12Q 1/68 (2006.01) G01N 1/04 (2006.01) G02B 21/32 (2006.01)

Patent

CA 2233614

A method of microdissection which involves: forming an image field of cells of the tissue sample utilizing a microscope, identifying at least one zone of cells of interest from the image field of cells which at least one zone of cells of interest includes different types of cells than adjacent zones of cells, and extracting the at least one zone of cells of interest from the tissue sample. The extraction is achieved by contacting the tissue sample with a transfer surface that can be selectively activated so that regions thereof adhere to the zone of cells of interest to be extracted. The transfer surface includes a selectively activatable adhesive layer which provides, for example, chemical or electrostatic adherence to the selected regions of the tissue sample. After the transfer surface is activated the transfer surface and tissue sample are separated. During separation the zone of cells of interest remains adhered to the transfer surface and is thus separated from the tissue sample and may be molecularly analyzed.

L'invention porte sur un procédé de microdissection qui suit les étapes ci-après: création d'un champ d'image de cellules présentes sur l'échantillon de tissu au moyen d'un microscope; identification d'au moins une zone de cellules d'intérêt à partir du champ d'image de cellules, cette zone au moins de cellules d'intérêt comprenant des types de cellules différentes de zones de cellules contiguës; et extraction d'au moins ladite zone de cellules d'intérêt de l'échantillon de tissu. L'extraction est effectuée par contact de l'échantillon de tissu avec une surface de transfert qui peut être sélectivement activée de façon que des régions de ladite surface adhèrent à la zone de cellules d'intérêt à extraire. La surface de transfert comprend une couche adhésive sélectivement activable qui adhère, par exemple, chimiquement ou électrostatiquement aux zones sélectionnées de l'échantillon de tissu. Une fois activée, la surface d'adhérence est séparée de l'échantillon de tissu. Adhérant à la surface de transfert tout au long du processus de séparation, la zone de cellules d'intérêt est ainsi séparée de l'échantillon de tissu, puis est soumise à une analyse moléculaire.

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