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ISSN 2073-8137
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Comparative characteristics of tissue expression of matrix metalloproteinases of benign and malignant melanocytic neoplasms of the skin

[Oncology]
Inna Novikova; Ekaterina Komarova; Victoria Pozdniyakova; Maria Maksimova; Elena Ulyanova; Anastasia Grankina; Irina Dashkova; Larisa Vashchenko;

Expression of matrix metalloproteinases (MMP-2 and MMP-9) in tissues of benign (nevi, dysplastic nevus) and malignant skin pigmentation neoplasms in 60 patients by immunohistochemical method was studied.
MMP-9 expression in melanoma cells was 6 and 2.9 times higher than in nevi and dysplastic nevi. MMP-2 expression was maximal in dysplastic nevi and exceeded expression values in nevi by 1.4 times (p<0.05); there was no significant difference in the expression of MMP-2 between dysplastic nevi and melanoma. Thus, significant differences in the expression level of MMP-9 with the dynamics of the index increase in the «nevus – dysplastic nevus – melanoma» series are shown. A more pronounced intensity of staining of both MMPs (with a predominance of strongly and moderately positive reactions) was characteristic of tissues of the malignant neoplasms of the skin.

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References:
1. Zlatnik Ye. Yu., Bakhtin A. V., Kochuyev S. S., Novikova I. A., Selyutina O. N., Nepomnyashchaya Ye. M., Przhedetsky Yu. V., Pozdnyakova V. V., Zakharova N. A. Factors of local cellular immunity in skin melanoma. Sovremennye problem nauki i obrazovaniya. – Modern problems of science and education. 2015;5. Available at: http://scienceeducation. ru/21801. Accenssed May 17, 2018. (In Russ.).
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7. Bauvois B. New facets of matrix metalloproteinases MMP-2 and MMP-9 as cell surface transducers: outside-in signaling and relationship to tumor progression. Biochimica et Biophysica Acta (BBA)-Reviews on Cancer. 2012;1825(1):29-36.
8. Aksenenko M. B., Ruksha T. G. Features of matrix metalloproteinase-2 expression in the nuclei of tumor cells of a skin melanoma. Vestnik dermatologii i venerologii. – Vestnik of dermatology and venereology. 2014;3:65-71. (In Russ.). https://doi.org/10.25208/0042-4609-2014-0-3
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Keywords: nevus, dysplastic nevus, melanoma, matrix metalloproteinases-2 and 9


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