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The Ludwig-Maximilians-University (LMU) Munich
Center for Drug Research, Chair of Pharmaceutical Biology (Prof. Angelika Vollmar)
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With the help of Wimasis we can really do quantitative analysis of image-based angiogenesis assays
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Prof. Dr. Stefan Zahler
Group Leader Angiogenesis
The Center for Drug Research covers all research areas around the development of novel drug – from chemical synthesis to innovative formulations. At the Chair of Pharmaceutical Biology (Prof. Dr. Angelika Vollmar) we investigate the pharmaceutical potential of natural compounds, be it of plant, animal or microbial origin.

Our main focus lies on tumor biology, with tumor angiogenesis (Prof. Dr. Stefan Zahler) as a central topic. Inhibiting the vessel growth in tumors in order to “starve” the malignancy is an old therapeutic concept, which has led to some clinical success, but still has its limits: due to evasive strategies of the tumors and to development of resistances we are still in need of novel therapeutic targets and inhibitors of angiogenesis.
Therefore, not only try to get a better academic understanding of the angiogenesis process, but also screen novel inhibitors. More complex angiogenesis assays, like the tube formation assay, are image based and tedious to evaluate by hand.

Therefore they often are of limited use for screening purposes. The WimTube module overcomes this problem: it enables a robust rational evaluation of tube formation assays, and allows us to use this assay in a medium throughput screening approach.
In addition to the highly reproducible analysis, we also get valuable morphological information, which has to date not been used in classical evaluation routines.
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University of Córdoba
Department of Cell Biology Physiology and Immunology, Faculty of Sciences
In this case we study alterations in mitochondrial ultrastructure and dynamics in kidney cells of mice submitted to calorie restriction. It has been proofed in a wide range of animal species, that caloric restriction without malnutrition (RC) is the most robust experimental intervention that increases longevity and delays the onset of cancer, kidney disease, cataracts, diabetes, hypertension, etc... Although the extension of the maximum longevity has not been fully tested in primates, other beneficial effects accepted that this intervention occurs in these animals and in humans. However, it has not been fully elucidated the mechanisms through which the RC operates to produce these effects.

Currently "Theory of Free Radicals” propose that the cellular aging occurs due to the accumulation of reactive oxygen species (ROS), this theory appears to be the most logical to explain the effects of the RC, because as it has been shown, that the intervention RC drastically decreases the production of ROS in cells, supporting the idea that a decrease in oxidative stress may be a mechanism that contributes to delay aging. Moreover, it has been found that it is the organelle mitochondria where the increased production and accumulation of ROS occurs, and thus constitutes a special target for studies on aging and caloric restriction. Furthermore, numerous alterations have been detected in mitochondria during aging (reduction of mitochondrial biogenesis and ATP synthesis, increased leakage of H + , etc.), many of which are reversed when the animals are subjected to periods of RC.

Other studies have found an inverse correlation between longevity and the degree of unsaturation of membrane phospholipids , having assumed that polyunsaturated fatty acids are more susceptible to lipid peroxidation and other changes that would result in the accumulation of ROS in the cells. Finding least amount of polyunsaturated fatty acids after CR periods support this idea. Therefore, it is possible to assume that the decrease in the number of double bonds in fatty acids in the membranes can be an adaptation of the longest species to prevent the development and accumulation of oxidative damage.

Previous studies conducted in our group have shown that CR produces alterations in the ultrastructure and dynamics of fission / fusion of mouse liver mitochondria, and these effects are modulated by dietary fat composition in CR . However, it is completely unknown whether alterations in kidney mitochondria, specifically in cells of the proximal convoluted tubule, a structure that plays a key role in the reabsorption of molecules and electrolytes and therefore the proper functioning of the body, which physiology also altered during aging.

In cooperation with Wimasis we were able to develop an automatic method for automatic detection of mitochondria in kidney tissue and isolated monocyte cells, providing us with thousands of planimetrics and stereologycs parameters in a record time. Wimasis “Stereology” software makes the improvement of data recompilation possible, in a fast,and reliable way, and ensuring the reproducibility of our material.
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Aksaray University
Department of Biology, Faculty of Science and Letters
Our main scientific interest is to combine biology and nanotechnology, meeting in cancer studies using multifunctional nanoparticles. Wimasis enables us to measure both in vitro scratch assay and in-ovo CAM assay by giving results in a shorter time and more standardized manner. Initial and final scratch sizes are determined using the WimScratch analysis tool and the difference between the two is used to determine migration distance using ratio of scratch area to cell covered area.

We also frequently use CAM model in angiogenesis studies. Instead of using the macroscopic scoring method, thanks to WimCAM we can reliably measure many parameters such as vesseldensity, total vessel network length, total branching points, total nets, and segment properties, hidden details in the images obtained after the nanomaterials-biological system interaction in CAM assay, thus we can make comparisons between these measurements in a short time. It also allows seeing measurements on the processed image after all these analyzes and makes you evaluate measurement quality. By this way, we cannot only save time but also get more reliable morphological information than classical methods.

As it is known, this is crucial for a better understanding of the relationship between cells/tissues and nano-sized structures and for making way for successful clinical applications. Thanks to Wimasis’ online tools, it is now possible to make more informative analyzes about interactions between nanomaterials and biological systems.
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