Differential effects of tissue culture coating substrates on prostate cancer cell adherence, morphology and behavior

PLoS One. 2014 Nov 6;9(11):e112122. doi: 10.1371/journal.pone.0112122. eCollection 2014.

Abstract

Weak cell-surface adhesion of cell lines to tissue culture surfaces is a common problem and presents technical limitations to the design of experiments. To overcome this problem, various surface coating protocols have been developed. However, a comparative and precise real-time measurement of their impact on cell behavior has not been conducted. The prostate cancer cell line LNCaP, derived from a patient lymph node metastasis, is a commonly used model system in prostate cancer research. However, the cells' characteristically weak attachment to the surface of tissue culture vessels and cover slips has impeded their manipulation and analysis and use in high throughput screening. To improve the adherence of LNCaP cells to the culture surface, we compared different coating reagents (poly-L-lysine, poly-L-ornithine, collagen type IV, fibronectin, and laminin) and culturing conditions and analyzed their impact on cell proliferation, adhesion, morphology, mobility and gene expression using real-time technologies. The results showed that fibronectin, poly-L-lysine and poly-L-ornithine improved LNCaP cells adherence and provoked cell morphology alterations, such as increase of nuclear and cellular area. These coating reagents also induced a higher expression of F-actin and reduced cell mobility. In contrast, laminin and collagen type IV did not improve adherence but promoted cell aggregation and affected cell morphology. Cells cultured in the presence of laminin displayed higher mobility than control cells. All the coating conditions significantly affected cell viability; however, they did not affect the expression of androgen receptor-regulated genes. Our comparative findings provide important insight for the selection of the ideal coating reagent and culture conditions for the cancer cell lines with respect to their effect on proliferation rate, attachment, morphology, migration, transcriptional response and cellular cytoskeleton arrangement.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Actins / metabolism
  • Actins / ultrastructure
  • Androgens / metabolism
  • Cell Adhesion
  • Cell Count
  • Cell Culture Techniques / methods*
  • Cell Movement
  • Cell Survival
  • Collagen
  • Fibronectins
  • Humans
  • Hydroxymethylglutaryl-CoA Reductase Inhibitors / pharmacology
  • Laminin
  • Male
  • Peptides
  • Polylysine
  • Prostatic Neoplasms / drug therapy
  • Prostatic Neoplasms / metabolism
  • Prostatic Neoplasms / pathology*
  • Simvastatin / pharmacology
  • Tumor Cells, Cultured

Substances

  • Actins
  • Androgens
  • Fibronectins
  • Hydroxymethylglutaryl-CoA Reductase Inhibitors
  • Laminin
  • Peptides
  • polyornithine
  • Polylysine
  • Collagen
  • Simvastatin

Grants and funding

Funding for the study was provided by Eskitis Institute Griffith University and the Australian Prostate Cancer Research Centre-Queensland through funding from the Australian Government Department of Health. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.