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Vol 52(2018) N 3 p. 350-371; DOI 10.1134/S0026893318030093 Full Text

D.V. Maltseva1*, S.A. Rodin1,2

Laminins in Metastatic Cancer

1Scientific Research Center BioKlinikum, Moscow, 115088 Russia
2Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, SE17177 Sweden

*d.maltseva@bioclinicum.com
Received - 2017-08-30; Accepted - 2017-12-02

Laminins are a family of extracellular heterotrimeric glycoproteins that are the main structural component of basement membranes (BMs), perform a barrier function, and are important for adhesion, differentiation, migration, and resistance to apoptosis of various cells, including cancer cells. The review summarizes the current knowledge of how laminins produced by cancer and normal cells influence the key stages of carcinogenesis. Laminin 332 (LN-332) and LN-111 enhance proliferation of certain cancer cells and increase the tumour growth. LN-111 increases resistance to apoptosis, induces differentiation, and inhibits the epithelial-mesenchymal transition (EMT) of cancer cells. LN-332 is associated with higher adhesion and higher migration potential of cancer cells. LN-411 and LN-421 significantly increase motility of cancer cells. LN-332 and LN-511 facilitate cell-cell adhesion and affect the efficacy of cell-cell interactions. The laminin chains α4 and α5 are important for the development and function of blood and lymphatic vessels. The expression ratio of the α4 and α5 laminin chains defines the BM permeability to leukocytes and, presumably, cancer cells in blood and lymphatic vessels. Interactions between LN-511 and α2-containing laminins enhance self-renewal and survival of circulating cancer stem cells. Moreover, laminins are involved in the formation of premetastatic niches and new colonies. Endogenous expression of the α4 laminin chain stimulates proliferation of individualised circulating cancer cells in vitro and in vivo and facilitates micrometastasis.

laminins, laminin receptors, metastasis, tumor growth, invasion, extravasation, lymphatic metastasis, premetastatic niche formation, epithelial-mesenchymal transition



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