Tissue Punch Technique
Tissue Punch Technique - Related Videos
04:37
Sampling Prostate Cancer Tissue for Biobanking: An MRI-guided Targeted Technique to Remove Biopsy Punches from Fresh Tumor Tissue
0 Views •
2023
This video demonstrates an MRI data-based technique to target specific tumor-containing regions in prostate tissue for sampling. The collected biopsy specimens can be either stored for biobanking purposes or used for subsequent downstream analysis.
02:20
Generating an Excisional Skin Wound in a Mouse Model via Punch Biopsy
0 Views •
2025
This video demonstrates a punch biopsy procedure to create a precise wound in a mouse model. The excision exposes the subcutaneous layer of the skin, providing a suitable site for studying immune responses to localized pathogen infection.
07:39
Corneal and Limbal Alkali Injury Induction Using a Punch-Trephine Technique in a Mouse Model
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Cited by 7 •
2023
This protocol describes a method to induce an accurate and reproducible corneal and limbal alkali injury in a mouse model. The protocol is advantageous as it allows for an evenly distributed injury to the highly curved mouse cornea and limbus.
06:19
Skin Punch Biopsy Explant Culture for Derivation of Primary Human Fibroblasts
0 Views •
Cited by 163 •
2013
The fibroblast explant culture protocol from human skin punch biopsies is a technically robust and simple way to derive skin cells within 4-8 weeks for banking of about 15-20 million cells at a low passage number.
03:30
A Technique for the Prolonged Incubation of Neuronal Tissue of the Retina
0 Views •
2025
This video demonstrates a method for prolonged incubation of neuronal tissue of the retina. Eyecups containing retina are obtained from a mouse eye; the inner limiting membrane (ILM) is enzymatically digested to expose the neuronal cells of the retina, and either the treated eyecup or the isolated retina is transferred to a specialized incubator for prolonged incubation at a low temperature.
FAQs
Sampling precision determines whether the resulting core represents tumor, adjacent normal tissue, or another defined region. Because the punch preserves spatial context, researchers can relate molecular or microscopic findings to the original location within a specimen. This makes regional comparisons more interpretable and helps distinguish tumor-associated changes from characteristics of surrounding tissue.
A consistent core size provides a more comparable amount and composition of tissue across specimens. Standardization supports reproducible assessment of DNA, RNA, proteins, and biomarkers, while reducing variation caused by inconsistent sampling areas. In studies involving multiple tumors or treatment groups, this consistency strengthens comparisons of cancer biology, treatment response, and disease progression.
Spatial context links an extracted core to its anatomical or pathological region rather than treating the specimen as uniform. A punch taken from a tumor can therefore be evaluated differently from one taken from adjacent normal tissue. This relationship is important when microscopic findings or molecular measurements are interpreted alongside regional differences in cancer specimens.
Depending on the study design, punched material can support microscopic and histological examination as well as molecular analyses. The available measurements may include DNA, RNA, protein, and biomarker assessments. Using the same sampling approach across specimens allows researchers to connect tissue morphology with molecular features and compare defined regions or tumors.
The operator first positions the hollow, sharp-edged punch over the selected region. The tool is then pressed or rotated through the specimen to remove a defined core. This workflow can be applied to surgical specimens, tissue blocks, or experimental models, with the target location chosen according to the intended microscopic, histological, or molecular analysis.
Tissue punches can collect defined cores from multiple tumor or adjacent normal regions for tissue microarray construction. Bringing standardized samples into a shared array supports parallel comparison among tumors and selected tissue regions. This application is useful for examining biomarkers and other cancer-related features across specimens while retaining information about the source region of each core.