Extracellular matrix components regulating glandular differentiation and the formation of basal lamina of a human pancreatic cancer cell line in vitro
- PMID: 8143763
- DOI: 10.1006/excr.1994.1075
Extracellular matrix components regulating glandular differentiation and the formation of basal lamina of a human pancreatic cancer cell line in vitro
Abstract
The interaction between the extracellular matrix and human tumor-cell clones S2-013 and S2-020, derived from a pancreatic cancer cell line (SUIT-2), was examined in vitro, using various cell differentiation-promoting matrices in two- and three-dimensional cultures. S2-013 cells (well-differentiated tubular adenocarcinoma in xenografts in nude mice) cultured in Matrigel formed glandular structures. Ultrastructural observation revealed a morphological polarity of cells and a distinct basal lamina. On the other hand, S2-020 cells (poorly differentiated tubular adenocarcinoma in xenografts) cultured in Matrigel formed neither glandular structures nor a basal lamina, but only cell aggregates. The morphology of these two sublines cultured in Matrigel expressed the histological degree of differentiation which they presented in nude mice. In contrast, in type I collagen gel, S2-013 cells formed glandular structures without a basal lamina, and in soft agar, they were able to form neither glandular structures nor a basal lamina. S2-020 cells cultured in type I collagen gel or soft agar formed the same simple cell aggregates as in Matrigel. Matrices used in a three-dimensional culture influenced the degree of differentiation in S2-013 cells but had no effect on the morphological differentiation in S2-020 cells. To detect the factors which induce basal lamina formation, S2-013 cells were cultured on a microporous membrane coated with extra-cellular matrix components such as laminin, type IV collagen, and fibronectin. S2-013 cells formed a basal lamina only on the laminin. These cell lines may be useful in investigating the mechanisms regulating the formation of glandular structures and basal lamina.
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