Paracellular transport of sulforaphane across caco-2 cell monolayers

Yusuke Ushida, Chutinan Boonyapichest, Hiroyuki Suganuma, Mitsuru Tanaka, Toshiro Matsui

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


The present study aimed to clarify the transport mechanism of sulforaphane (SFN), a potent phytochemical of broccoli, in Caco-2 cells. Transport study with an Ussing chamber system revealed the apparent permeability (Papp) of SFN in the apical-to-basolateral direction was much higher (31.2 ± 2.5 × 10-6 cm/sec) than that of (-)-epigallocatechin-3-O-gallate (0.54 ± 0.12 × 10-6 cm/sec). An efflux ratio analysis and several inhibition studies suggested SFN was passively transported across Caco-2 cell monolayers. Small amounts of glutathione conjugates of SFN in the basolateral side suggested that the transcellular pathway was, in part, involved in the transport of SFN. However, results showing that SFN transport was attenuated by sodium butyrate, a tight junction (TJ) closer, and competed with fluorescein, a selective marker of paracellular transport, clearly indicated that SFN was mainly transported through the TJ-controlled paracellular pathway..

Original languageEnglish
Pages (from-to)127-134
Number of pages8
JournalFood Science and Technology Research
Issue number1
Publication statusPublished - 2016

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Food Science
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering
  • Marketing


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