Cytotoxic and chemosensitizing effects of glycoalkaloidic extract on 2D and 3D models using RT4 and patient derived xenografts bladder cancer cells

Mariza Abreu Miranda, Priscyla Daniely Marcato, Arindam Mondal, Nusrat Chowdhury, Aragaw Gebeyehu, Sunil Kumar Surapaneni, Maria Vitória Lopes Badra Bentley, Robson Amaral, Chong Xian Pan, Mandip Singh

Research output: Contribution to journalArticle

Abstract

Glycoalkaloids have been widely demonstrated as potential anticancer agents. However, the chemosensitizing effect of these compounds with traditional chemotherapeutic agents has not been explored yet. In a quest for novel effective therapies to treat bladder cancer (BC), we evaluated the chemosensitizing potential of glycoalkaloidic extract (GE) with cisplatin (cDDP) in RT4 and PDX cells using 2D and 3D cell culture models. Additionally, we also investigated the underlying molecular mechanism behind this effect in RT4 cells. Herein, we observed that PDX cells were highly resistant to cisplatin when compared to RT4 cells. IC50 values showed at least 2.16-folds and 1.4-folds higher in 3D cultures when compared to 2D monolayers in RT4 cells and PDX cells, respectively. GE + cDDP inhibited colony formation (40%) and migration (28.38%) and induced apoptosis (57%) in RT4 cells. Combination therapy induced apoptosis by down-regulating the expression of Bcl-2 (p < 0.001), Bcl-xL (p < 0.001) and survivin (p < 0.01), and activating the caspase cascade in RT4 cells. Moreover, decreased expression of MMP-2 and 9 (p < 0.01) were observed with combination therapy, implying its effect on cell invasion/migration. Furthermore, we used 3D bioprinting to grow RT4 spheroids using sodium alginate-gelatin as a bioink and evaluated the effect of GE + cDDP on this system. Cell viability assay showed the chemosensitizing effect of GE with cDDP on bio-printed spheroids. In summary, we showed the cytotoxicity effect of GE on BC cells and also demonstrated that GE could sensitize BC cells to chemotherapy.

Original languageEnglish (US)
Article number111460
JournalMaterials Science and Engineering C
Volume119
DOIs
StatePublished - Feb 2021

Keywords

  • 3D model
  • Bioprinting
  • Bladder cancer
  • Drug susceptibility
  • Patient derived xenografts
  • Solanum lycocarpum

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Miranda, M. A., Marcato, P. D., Mondal, A., Chowdhury, N., Gebeyehu, A., Surapaneni, S. K., Bentley, M. V. L. B., Amaral, R., Pan, C. X., & Singh, M. (2021). Cytotoxic and chemosensitizing effects of glycoalkaloidic extract on 2D and 3D models using RT4 and patient derived xenografts bladder cancer cells. Materials Science and Engineering C, 119, [111460]. https://doi.org/10.1016/j.msec.2020.111460