Temperature-modulated cell-separation column using temperature-responsive cationic copolymer hydrogel-modified silica beads

Kenichi Nagase, Daimu Inanaga, Daijyu Ichikawa, Aya Mizutani Akimoto, Yutaka Hattori, Hideko Kanazawa

Research output: Contribution to journalArticle

Abstract

There is strong demand for cell separation methods that do not decrease cell activity or modify cell surfaces. Here, new temperature-modulated cell-separation columns not requiring cell-surface premodification are described. The columns were packed with temperature-responsive cationic polymer hydrogel-modified silica beads. Poly(N-isopropylacrylamide-co-n-butyl methacrylate-co-N,N-dimethylaminopropyl acrylamide) hydrogels with various cationic moieties were attached to silica-bead surfaces by radical polymerization using N,Nʹ-methylenebisacrylamide as a crosslinking agent. The beads were packed into solid-phase extraction columns, and temperature-dependent cell elution from the columns was found using HL-60 and Jurkat cells. The retention HL-60 and Jurkat cells in columns containing cationic beads at 37 °C was 95.3% to 99.6% and 95.0% to 98.8%, respectively. By contrast, beads without cationic properties exhibited low cell retention (20.6% for HL-60 and 32.5% for Jurkat cells). The cells were mainly retained through both electrostatic and hydrophobic interactions. The retained HL-60 (4.9%) and Jurkat cells (40%) were eluted at 4 °C from the column with a low composition of cationic monomer (DMAPAAm, 1 mol% in copolymer), because the temperature-responsive hydrogels on the beads became hydrophilic, decreasing the hydrophobic interactions between the cells and the beads. A higher number of Jurkat cells than HL-60 cells were eluted because of differences in their electrostatic properties (Jurkat cells: −2.53 mV; HL-60 cells: −20.7 mV). The results indicated that cell retention by the hydrogel-coated beads packed in a solid phase extraction column could be modulated simply by changing the temperature.

Original languageEnglish
Pages (from-to)253-262
Number of pages10
JournalColloids and Surfaces B: Biointerfaces
Volume178
DOIs
Publication statusPublished - 2019 Jun 1

Fingerprint

Cell Separation
Hydrogel
Hydrogels
Silicon Dioxide
beads
Jurkat Cells
copolymers
Copolymers
Silica
HL-60 Cells
silicon dioxide
Temperature
cells
Electrostatics
temperature
Solid Phase Extraction
Static Electricity
Hydrophobic and Hydrophilic Interactions
Acrylamide
Free radical polymerization

Keywords

  • Cell separation
  • Poly(N-isopropylacrylamide)
  • Regenerative medicine
  • Temperature-responsive chromatography
  • Thermoresponsive polymer

ASJC Scopus subject areas

  • Biotechnology
  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

Cite this

@article{2469a0112c2d4f428dddb78366af235c,
title = "Temperature-modulated cell-separation column using temperature-responsive cationic copolymer hydrogel-modified silica beads",
abstract = "There is strong demand for cell separation methods that do not decrease cell activity or modify cell surfaces. Here, new temperature-modulated cell-separation columns not requiring cell-surface premodification are described. The columns were packed with temperature-responsive cationic polymer hydrogel-modified silica beads. Poly(N-isopropylacrylamide-co-n-butyl methacrylate-co-N,N-dimethylaminopropyl acrylamide) hydrogels with various cationic moieties were attached to silica-bead surfaces by radical polymerization using N,Nʹ-methylenebisacrylamide as a crosslinking agent. The beads were packed into solid-phase extraction columns, and temperature-dependent cell elution from the columns was found using HL-60 and Jurkat cells. The retention HL-60 and Jurkat cells in columns containing cationic beads at 37 °C was 95.3{\%} to 99.6{\%} and 95.0{\%} to 98.8{\%}, respectively. By contrast, beads without cationic properties exhibited low cell retention (20.6{\%} for HL-60 and 32.5{\%} for Jurkat cells). The cells were mainly retained through both electrostatic and hydrophobic interactions. The retained HL-60 (4.9{\%}) and Jurkat cells (40{\%}) were eluted at 4 °C from the column with a low composition of cationic monomer (DMAPAAm, 1 mol{\%} in copolymer), because the temperature-responsive hydrogels on the beads became hydrophilic, decreasing the hydrophobic interactions between the cells and the beads. A higher number of Jurkat cells than HL-60 cells were eluted because of differences in their electrostatic properties (Jurkat cells: −2.53 mV; HL-60 cells: −20.7 mV). The results indicated that cell retention by the hydrogel-coated beads packed in a solid phase extraction column could be modulated simply by changing the temperature.",
keywords = "Cell separation, Poly(N-isopropylacrylamide), Regenerative medicine, Temperature-responsive chromatography, Thermoresponsive polymer",
author = "Kenichi Nagase and Daimu Inanaga and Daijyu Ichikawa and {Mizutani Akimoto}, Aya and Yutaka Hattori and Hideko Kanazawa",
year = "2019",
month = "6",
day = "1",
doi = "10.1016/j.colsurfb.2019.02.057",
language = "English",
volume = "178",
pages = "253--262",
journal = "Colloids and Surfaces B: Biointerfaces",
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T1 - Temperature-modulated cell-separation column using temperature-responsive cationic copolymer hydrogel-modified silica beads

AU - Nagase, Kenichi

AU - Inanaga, Daimu

AU - Ichikawa, Daijyu

AU - Mizutani Akimoto, Aya

AU - Hattori, Yutaka

AU - Kanazawa, Hideko

PY - 2019/6/1

Y1 - 2019/6/1

N2 - There is strong demand for cell separation methods that do not decrease cell activity or modify cell surfaces. Here, new temperature-modulated cell-separation columns not requiring cell-surface premodification are described. The columns were packed with temperature-responsive cationic polymer hydrogel-modified silica beads. Poly(N-isopropylacrylamide-co-n-butyl methacrylate-co-N,N-dimethylaminopropyl acrylamide) hydrogels with various cationic moieties were attached to silica-bead surfaces by radical polymerization using N,Nʹ-methylenebisacrylamide as a crosslinking agent. The beads were packed into solid-phase extraction columns, and temperature-dependent cell elution from the columns was found using HL-60 and Jurkat cells. The retention HL-60 and Jurkat cells in columns containing cationic beads at 37 °C was 95.3% to 99.6% and 95.0% to 98.8%, respectively. By contrast, beads without cationic properties exhibited low cell retention (20.6% for HL-60 and 32.5% for Jurkat cells). The cells were mainly retained through both electrostatic and hydrophobic interactions. The retained HL-60 (4.9%) and Jurkat cells (40%) were eluted at 4 °C from the column with a low composition of cationic monomer (DMAPAAm, 1 mol% in copolymer), because the temperature-responsive hydrogels on the beads became hydrophilic, decreasing the hydrophobic interactions between the cells and the beads. A higher number of Jurkat cells than HL-60 cells were eluted because of differences in their electrostatic properties (Jurkat cells: −2.53 mV; HL-60 cells: −20.7 mV). The results indicated that cell retention by the hydrogel-coated beads packed in a solid phase extraction column could be modulated simply by changing the temperature.

AB - There is strong demand for cell separation methods that do not decrease cell activity or modify cell surfaces. Here, new temperature-modulated cell-separation columns not requiring cell-surface premodification are described. The columns were packed with temperature-responsive cationic polymer hydrogel-modified silica beads. Poly(N-isopropylacrylamide-co-n-butyl methacrylate-co-N,N-dimethylaminopropyl acrylamide) hydrogels with various cationic moieties were attached to silica-bead surfaces by radical polymerization using N,Nʹ-methylenebisacrylamide as a crosslinking agent. The beads were packed into solid-phase extraction columns, and temperature-dependent cell elution from the columns was found using HL-60 and Jurkat cells. The retention HL-60 and Jurkat cells in columns containing cationic beads at 37 °C was 95.3% to 99.6% and 95.0% to 98.8%, respectively. By contrast, beads without cationic properties exhibited low cell retention (20.6% for HL-60 and 32.5% for Jurkat cells). The cells were mainly retained through both electrostatic and hydrophobic interactions. The retained HL-60 (4.9%) and Jurkat cells (40%) were eluted at 4 °C from the column with a low composition of cationic monomer (DMAPAAm, 1 mol% in copolymer), because the temperature-responsive hydrogels on the beads became hydrophilic, decreasing the hydrophobic interactions between the cells and the beads. A higher number of Jurkat cells than HL-60 cells were eluted because of differences in their electrostatic properties (Jurkat cells: −2.53 mV; HL-60 cells: −20.7 mV). The results indicated that cell retention by the hydrogel-coated beads packed in a solid phase extraction column could be modulated simply by changing the temperature.

KW - Cell separation

KW - Poly(N-isopropylacrylamide)

KW - Regenerative medicine

KW - Temperature-responsive chromatography

KW - Thermoresponsive polymer

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U2 - 10.1016/j.colsurfb.2019.02.057

DO - 10.1016/j.colsurfb.2019.02.057

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JO - Colloids and Surfaces B: Biointerfaces

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SN - 0927-7765

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