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Fine-tuning of epithelial taste bud organoid to promote functional recapitulation of taste reactivity.

Anish Ashok AdpaikarSushan ZhangHyun-Yi KimKi Woo KimSeok Jun MoonJong-Min LeeHan-Sung Jung
Published in: Cellular and molecular life sciences : CMLS (2022)
Taste stem/progenitor cells from posterior mouse tongues have been used to generate taste bud organoids. However, the inaccessible location of taste receptor cells is observed in conventional organoids. In this study, we established a suspension-culture method to fine-tune taste bud organoids by apicobasal polarity alteration to form the accessible localization of taste receptor cells. Compared to conventional Matrigel-embedded organoids, suspension-cultured organoids showed comparable differentiation and renewal rates to those of taste buds in vivo and exhibited functional taste receptor cells and cycling progenitor cells. Accessible taste receptor cells enabled the direct application of calcium imaging to evaluate the taste response. Moreover, suspension-cultured organoids can be genetically altered. Suspension-cultured taste bud organoids harmoniously integrated with the recipient lingual epithelium, maintaining the taste receptor cells and gustatory innervation capacity. We propose that suspension-cultured organoids may provide an efficient model for taste research, including taste bud development, regeneration, and transplantation.
Keyphrases
  • induced apoptosis
  • cell cycle arrest
  • stem cells
  • high resolution
  • cell death
  • endoplasmic reticulum stress
  • oxidative stress
  • binding protein
  • mesenchymal stem cells
  • mass spectrometry
  • fluorescence imaging