Models of animal melanoma are still indispensable tools in oncological research because they can be studied in syngeneic hosts while human melanomas cannot. One such model is a family of melanomas which originated in 1959 from a spontaneous melanotic melanoma of the skin in Syrian hamster, the Bomirski melanomas. Currently, it consists of 5 transplantable in vivo-variants (Ma, Ab, MI, MI-B and Ab455) and several cell lines derived from Ab amelanotic and Ma melanotic tumors. Here we present the Bomirski family of melanomas as an excellent model to study regulatory mechanisms governing melanogenesis, differentiation and intermediary metabolism in melanocytes, and as a good animal model for developing and testing potential melanoma vaccines.
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http://dx.doi.org/10.3892/ijo.2.2.221 | DOI Listing |
Folia Histochem Cytobiol
March 2019
Department of Embryology, Medical Umiversity of Gdansk, Debinki 1 St, 80-210 Gdansk, Poland.
Introduction: The effect of melanogenesis intensity on melanoma biology remains an open question, and the biological differences between melanotic and amelanotic melanoma cells have not yet been satisfactorily documented. As a result, the melanization of melanoma cells in in vitro cultures is not considered among experimental procedures. The aim of this study was to investigate the effect of the medium used to culture Bomirski amelanotic Ab melanoma cells on the melanogenesis process.
View Article and Find Full Text PDFInt J Mol Sci
April 2018
Department of Biophysics, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University in Kraków, 31-007 Kraków, Poland.
The focus of the present review is to investigate the role of melanin in the radioprotection of melanoma and attempts to sensitize tumors to radiation by inhibiting melanogenesis. Early studies showed radical scavenging, oxygen consumption and adsorption as mechanisms of melanin radioprotection. Experimental models of melanoma in hamsters and in gerbils are described as well as their use in biochemical and radiobiological studies, including a spontaneously metastasizing ocular model.
View Article and Find Full Text PDFInt J Mol Sci
January 2018
Marian Smoluchowski Institute of Physics, Jagiellonian University, Prof. Stanisława Łojasiewicza 11 Street, 30-348 Krakow, Poland.
A tumor vasculature network undergoes intense growth and rebuilding during tumor growth. Traditionally, vascular networks are histologically examined using parameters such as vessel density determined from two-dimensional slices of the tumor. Two-dimensional probing of a complicated three-dimensional (3D) structure only provides partial information.
View Article and Find Full Text PDFInt J Mol Sci
March 2015
Department of Histology, Medical University of Gdańsk, Dębinki 1a, 80-211 Gdańsk, Poland.
Deregulated melanogenesis is involved in melanomagenesis and melanoma progression and resistance to therapy. Vitamin D analogs have anti-melanoma activity. While the hypercalcaemic effect of the active form of Vitamin D (1,25(OH)2D3) limits its therapeutic use, novel Vitamin D analogs with a modified side chain demonstrate low calcaemic activity.
View Article and Find Full Text PDFActa Biochim Pol
April 2014
Department of Ophthalmology and Ocular Oncology, Jagiellonian University Medical College, Kraków, Poland.
Standard ocular tumor treatment includes brachytherapy, as well as proton therapy, particularly for large melanoma tumors. However, the effects of different radiation types on the metastatic spread is not clear. We aimed at comparing ruthenium ((106)Ru, emitting β electrons) and iodine ((125)I, γ-radiation) brachytherapy and proton beam therapy of melanoma implanted into the hamster eye on development of spontaneous lung metastases.
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