34 results about "Tissue Arrays" patented technology

The present inventors have shown that the gene and protein expression profiles of ADAM8, ADAM10 and ADAM12 in different grades and stages of bladder cancer.

ADAM12 gene expression was evaluated in tumors from 96 patients with bladder cancer using a customized Affymetrix GeneChip. Gene expression in bladder cancer was validated using reverse transcription-polymerase chain reaction (RT-PCR), quantitative PCR, and in situ hybridization. Protein expression was evaluated by immunohistochemical staining on tissue arrays of bladder cancers.

The presence and relative amount of ADAM12 in the urine of cancer patients were determined by Western blotting and densitometric measurements, respectively.

Particularly ADAM12 mRNA expression was significantly upregulated in bladder cancer, as determined by microarray analysis, and the level of ADAM12 mRNA correlated with disease stage. ADAM12 protein expression correlated with tumor stage and grade. ADAM12 was present in higher levels in the urine from bladder cancer patients than in urine from healthy individuals. Significantly, following removal of tumor by surgery, in most bladder cancer cases examined the level of ADAM12 in the urine decreased and, upon recurrence of tumor, increased.

The invention disclosed herein improves upon existing tissue microarray technology by using frozen tissues embedded in tissue embedding compound as donor samples and arraying the specimens into a recipient block comprising tissue embedding compound. Tissue is not fixed prior to embedding, and sections from the array are evaluated without fixation or post-fixed according to the appropriate methodology used to analyze a specific gene at the DNA, RNA, and/or protein levels. Unlike paraffin tissue arrays which can be problematic for immunohistochemistry and for RNA in situ hybridization analyses, the disclosed methods allow optimal evaluation by each technique and uniform fixation across the array panel. The disclosed arrays work well for DNA, RNA, and protein analyses, and have significant qualitative and quantitative advantages over existing methods.

A workstation that provides an efficient method to collect biological tissues in a column tissue array format from blocks of embedded, frozen tissues, or fresh tissues. The workstation has a control unit for directing operations of the workstation and the operation unit for performing the production of the tissue column array. The operation unit comprises an array of vertical tubes in a platform, an arbor which engages and presses down the designated tube in the array, the embedded tissue block which is mounted directly below the designated tube, assemblies of motors responsive to the control unit for driving the platform and the tissue block, a light source block for generating an alignment signal, and a light detector block which measures the signal from the light source to determine the degree of alignment between the arbor, punch tubes, and the specimen block.

Provided herein are arrays comprising transcriptomes of diseased tissues and methods of using the arrays for diagnosis, prognosis, screening, and identification of diseases. The genetic profile of a tissue sample for a disease state is analyzed using diseased tissue transcriptome arrays for disease diagnosis. The genetic profile is then correlated with the effectiveness of specific therapeutic agents. Correlation of therapeutic agent effects with expression profiles provides for further screening and selection of patients predicted to respond to these therapeutic agents, thus minimizing unnecessary exposure to ineffective treatments.

The invention discloses a preparing method for an olefin tissue core which includes the steps of customizing an olefin model, customizing a tissue array hole plate, customizing a mandrel, customizing a sampling needle, customizing the olefin block of the tissue chip array of a receptor, sampling the olefin block of a supplier, preparing the olefin block of the tissue chip of the supplier, etc. The preparing method is simple and easy with good experimental result.

The invention provides a technology and method for preparing high throughput needle biopsy tissue chip. The method comprises the following steps: collecting 42 residual paraffin-embedded tissue samples of needle biopsy of patients who have been diagnosed as the breast cancer patients through pathological examination on mammary gland needle biopsy tissues; taking the corresponding normal pathological HE stained sections as the guide, cutting the paraffin-embedded tissue sections (1mm to 4mm) corresponding to the cancer parts of the HE-stained sections, preparing paraffin-embedded tissue cores, preparing breast cancer needle biopsy tissue arrays by utilizing a tissue chip instrument, cutting paraffin into slices, and preparing paraffin-embedded tissue chip of breast cancer needle biopsy tissue. The prepared needle biopsy tissue chip can be applied to molecular medical research of related diseases such as immunocytochemistry, in-situ hybridization, and the like.

The invention provides a method for forming tissue pieces which allows stable and accurate winding around a core rod in rolling a sheet-like tissue piece, and a device therefor.

In the tissue pieces used as each tissue piece in a tissue array obtained by arranging the tissue pieces on a substrate in an array form, the method for forming a roll-shaped tissue piece 6 obtained by rolling a sheet-like tissue piece 8 is characterized by the facts that the sheet-like tissue piece 8 is produced by slicing a tissue block 5 obtained by embedding the tissues with an embedding medium, the sheet-like tissue piece 8 is placed on a mounting block 12, peeling means 13 which easily enables peeling of the tissue piece 8 from the mounting block 12 is applied between the mounting block 12 and the tissue piece 8, and the tissue piece 8 is wound around a core rod 11 while heating the tissue piece 8 on the mounting block 12.

The process of preparing great capacity tissue array includes the following steps: preparing several tissue array slices and arranging the tissue array chips on the identical glass slide; dropping water in 43-49 deg.c onto the glass slide to develop the slices; exhausting water on the glass slide to make the slices close to the glass slide; and final heating at 60 deg.c for 1-2 hr and dewaxing with xylene. The tissue array thus prepared has great capacity, and the preparation process is simple, convenient and easy to control. The micro array has great sample number and this can avoid pseudo negative in detection.

A tissue array production method which enables even roll-shaped tissue pieces having various diameters to be steadily fixed to a substrate block is provided.

In the tissue array production method in which roll-shaped tissue pieces 6 formed by rolling sheet-like tissue pieces 8 in the shape of a roll are arranged on a substrate in an array form, the tissue array is produced by placing a holding member 16 which holds a plurality of roll-shaped tissue pieces 6 so that their axis directions are vertically directed in a container 10 into which a melted embedding medium is poured for its accumulation, to hold the respective roll-shaped tissue pieces 6 in the holding member 16; by pouring the embedding medium into the container 10, to form a substrate block 40 constituted so that the plurality of roll-shaped tissue pieces 6 is arranged in the array form; and by slicing the substrate block 40 so that the roll-shaped tissue pieces 6 are ring-shaped, to place the sliced pieces on the substrate.

A tissue piece forming device suitable for forming a tissue piece required in the process of fabricating a novel tissue array chip having many benefits such as the one that the tissue array chip can be fabricated even if the tissue included in a tissue block has a small thickness. The tissue piece forming device (100) for forming a sheet-like tissue piece (S) into a roll shape includes a rotary shaft (1) to which one end of the sliced tissue piece (S) is secured and a drive means for rotating the rotary shaft (1). The tissue piece (S) can be formed into a tight roll shape while rotating the rotary shaft (1).

This present invention covers novel means, devices and instruments for production of a tissue array block that is further sectioned into duplicates of tissue arrays. An integral microscope is incorporated into the instrument for viewing and examining a stained reference slide and selecting donor tissue core region(s) from the reference slide. The reference slide is held in a reference slide station that is operatively linked and indexed with a station or platform holding a source donor tissue block, which is further indexed and precisely positioned with reference to the donor needle punch for punching the donor tissue core(s). A recipient block indexed to the donor block punch is placed under the donor punch station and donor tissue cores are delivered into pre-existing hole(s) by a stylet to construct the tissue array block. The instrument includes a donor punch station, optionally a second recipient punch station, with each operable independently or removable. The present invention also provides pre-loading needles with donor tissue cores for constructing tissue array blocks in pre-gridded and pre-punched recipient block. The tissue arrays produced from the tissue array blocks made are useful for testing such freshly-made and/or archival tissue specimens in both scientific and clinical research and applications.

An apparatus for producing a tissue array, having at least one receiver block (1) and at least one donor block (2) that comprises tissue (3) to be investigated, is described. The donor block (2) comprises tissue (3) to be investigated, a first hollow needle (4) for creating a cavity in the receiver block (1), and a second hollow needle (5) for removing a sample from the tissue (3) and introducing the sample (3) into the cavity of the receiver block (1), being provided. For positioning of the first and/or the second hollow needle (4; 5) above the receiver block (1) and/or the donor block (2), a positioning array (11) having predefined markings, as well as a movably mounted lever, are provided for transferring the position of the markings onto a corresponding position on the donor block (2) and/or onto a corresponding position on the receiver block (1).

An exemplary tissue array, and a method for producing the same, can be provided which can include providing an accepter biological structure(s), providing a donor tissue(s), removing a portion(s) of the donor tissue(s), and removing a portion(s) of the accepter biological structure(s). The removed portion(s) of the accepter biological structure(s) can have a size that is substantially similar to a size of the removed portion(s) of the donor tissue(s). The removed portion(s) of the donor tissue(s) can be inserted into the accepter biological structure(s) at a location substantially corresponding to the removed portion(s) of the accepter biological structure(s).

A simple yet sophisticated instrument for constructing tissue arrays. The device comprises a plurality of punches (1, 2), which are mounted on a punch holder (26), which can be displaced between two precisely defined positions. A mechanical detent or stop (12) is provided on the instrument to mechanically block the movement of the punch seat (26) so that it is in a precisely determined position. Such an arrangement makes the instrument greatly save time and improve accuracy compared with conventional linear position precise positioning devices. Any one of the punches (1, 2) can quickly enter the operating position by simply moving the punch seat (26) from the first position to the second position.

Arrays of biological tissue can be created by removing cores from regions of interest in a series of donor blocks (16) of embedded tissues. The cores removed are placed in a regular array in a recipient block (15). This is typically done with two different punches, one for obtaining the cores of interest and the other for creating the receiving holes in the recipient block (15). The present invention comprises such a system including two separate z axes, one for each punch. Each punch has its own stylet and the axis of each punch is parallel to the axis of its drive. Alternatively, the invention is made by providing a single z axis, with a mechanism for automatically changing two or more punches in and out of a holder on the z axis.

An apparatus for producing a tissue array, having at least one receiver block ( 1 ) and at least one donor block ( 2 ) that comprises tissue ( 3 ) to be investigated, is described. The donor block ( 2 ) comprises tissue ( 3 ) to be investigated, a first hollow needle ( 4 ) for creating a cavity in the receiver block ( 1 ), and a second hollow needle ( 5 ) for removing a sample from the tissue ( 3 ) and introducing the sample ( 3 ) into the cavity of the receiver block ( 1 ), being provided. For positioning of the first and/or the second hollow needle ( 4; 5 ) above the receiver block ( 1 ) and/or the donor block ( 2 ), a positioning array ( 11 ) having predefined markings, as well as a movably mounted lever, are provided for transferring the position of the markings onto a corresponding position on the donor block ( 2 ) and/or onto a corresponding position on the receiver block ( 1 ).

An apparatus for forming a surface reservoir to hold a sample for a desirable period of time is described. The apparatus contains a platform, a solid surface disposed onto the platform, and an assembly of a bottomless vessel mounted on the solid surface. Also described is an apparatus that forms an array of surface reservoirs on a solid surface when multiple bottomless vessels are used, which can be used for high throughput applications. The apparatus can be used in applications on a solid surface, such as immunohistochemistry (IHC), oligo synthesis, peptide synthesis, ELISA, DNA array, peptide array, protein array, antibody array, tissue array, cell culturing, etc.