Cited by 173Microfluidic and Capillary Electrophoresis Applications3D Printing in Biomedical ResearchInnovative Microfluidic and Catalytic Techniques Innovation

Micro Total Bioassay System for Ingested Substances: Assessment of Intestinal Absorption, Hepatic Metabolism, and Bioactivity

Imura, Yuki, Sato, Kiichi, Yoshimura, Etsuro·2010·Analytical Chemistry

Abstract

Oral medicines and food constituents are absorbed in the intestine and metabolized in the liver, after which they exhibit their activity toward a target tissue. Micromodels of human tissues were developed to mimic these processes and bioactivities. By integrating the micromodels, we realized a micro total bioassay system for oral substances; this system comprised a microintestine, microliver, and the target components. The microchip was composed of a slide glass and polydimethylsiloxane (PDMS) sheets with microchannels fabricated by photolithography. Caco-2 cells were cultured in the intestine component, and HepG2 cells, in the liver component. The human breast carcinoma MCF-7 cells were cultured in the target component, and the activities of anticancer agents and estrogen-like substances were successfully assayed. By using this system, the overall properties of the ingested cyclophosphamide, epirubicin, 17-β estradiol, and soy isoflavone, i.e., their intestinal absorption, hepatic metabolism, and bioactivity toward target cells, could be assayed with operative ease. Further, the assay time and cell consumption were reduced compared to those in conventional in vitro bioassay systems.

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Crossref · 10.1021/ac100806x

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  • In a breast cancer/liver microenvironment chip, breast cancer cells cultured in the tumor microenvironment have higher vascular porosity and tumor microenvironment permeability than blood vessels in healthy liver microenvironment.

    “Compared with blood vessels in the healthy liver microenvironment, breast cancer cells cultured in the microenvironment of this model have higher vascular porosity and tumor microenvironment permeability.”

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Authors
Imura, Y., Sato, K., & Yoshimura, E.
Affiliations
The University of Tokyo (JP)
Corresponding author
Sato, Kiichi
Venue
Analytical Chemistry
Published
2010-11-23
Volume
82
Issue
24
Pages
9983-9988
ISSN
  • 0003-2700 (ISSN-L)
  • 1520-6882
OpenAlex
W2089859139
Cited by
172
References
30
Citations by year
2026: 4 · 2025: 5 · 2024: 10 · 2023: 8 · 2022: 7 · 2021: 11 · 2020: 21 · 2019: 16 · 2018: 9 · 2017: 19 · 2016: 12 · 2015: 10 · 2014: 13 · 2013: 10 · 2012: 10
FWCI
5.10
Type
journal article
Language
en
Open access
closed
Locations
  • Analytical Chemistry (publishedVersion)
  • PubMed (publishedVersion)
Funders
RIKEN
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Microfluidic and Capillary Electrophoresis Applications
  • Physical Sciences › Engineering › Biomedical Engineering › 3D Printing in Biomedical Research
  • Physical Sciences › Engineering › Biomedical Engineering › Innovative Microfluidic and Catalytic Techniques Innovation
Keywords
intestinal absorption, hepatic metabolism, oral drug absorption, Caco-2 cells, HepG2 cells, MCF-7 cells, anticancer agents, cyclophosphamide, epirubicin, estradiol, soy isoflavones, microfluidics, PDMS microchannel, in vitro bioassay
MeSH terms
Antineoplastic Agents, Cyclophosphamide, Estradiol, Humans, Intestinal Absorption, Isoflavones, Liver, Models, Biological, Epirubicin, Cell Line, Tumor, Microchip Analytical Procedures, Lab-On-A-Chip Devices

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