Gelatin in situ zymography on fixed, paraffin-embedded tissue: zinc and ethanol fixation preserve enzyme activity.
Authors:Hadler-Olsen E, Kanapathippillai P, Berg E, Svineng G, Winberg JO, Uhlin-Hansen L,
Journal:J Histochem Cytochem
PubMed ID:19755718
In situ zymography is a method for the detection and localization of enzymatic activity in tissue sections. This method is used with frozen sections because routine fixation of tissue in neutral-buffered formalin inhibits enzyme activity. However, frozen sections present with poor tissue morphology, making precise localization of enzymatic activity difficult ... More
Chlorotoxin inhibits glioma cell invasion via matrix metalloproteinase-2.
Authors:Deshane J, Garner CC, Sontheimer H
Journal:J Biol Chem
PubMed ID:12454020
'Primary brain tumors (gliomas) have the unusual ability to diffusely infiltrate the normal brain thereby evading surgical treatment. Chlorotoxin is a scorpion toxin that specifically binds to the surface of glioma cells and impairs their ability to invade. Using a recombinant His-Cltx we isolated and identified the principal Cltx receptor ... More
Authentic matrix vesicles contain active metalloproteases (MMP). a role for matrix vesicle-associated MMP-13 in activation of transforming growth factor-beta.
Authors:D'Angelo M, Billings PC, Pacifici M, Leboy PS, Kirsch T
Journal:J Biol Chem
PubMed ID:11145962
'Matrix vesicles (MV) play a key role in the initiation of cartilage mineralization. Although many components in these microstructures have been identified, the specific function of each component is still poorly understood. In this study, we show that metalloproteases (MMP), MMP-2, -9, and -13 are associated with MV isolated from ... More
Effective antiprotease-antibiotic treatment of experimental anthrax.
'BACKGROUND: Inhalation anthrax is characterized by a systemic spread of the challenge agent, Bacillus anthracis. It causes severe damage, including multiple hemorrhagic lesions, to host tissues and organs. It is widely believed that anthrax lethal toxin secreted by proliferating bacteria is a major cause of death, however, the pathology of ... More
Molecular proximity of seprase and the urokinase-type plasminogen activator receptor on malignant melanoma cell membranes: dependence on beta1 integrins and the cytoskeleton.
'Previous studies have shown that several proteolytic enzymes are associated with membrane protrusions at the leading edge of migrating tumor cells. In this study we demonstrate that seprase and the urokinase plasminogen activator receptor (uPAR), co-localize in the plasma membrane of LOX malignant melanoma cells. Cells were labeled with fluorochrome-conjugated ... More