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Cell Culture

Cell Culture

Most vertebrate cells grow in vitro attached to a substrate as a monolayer, called adherent cultures. The flasks and plates used to grow cells are chemically treated to facilitate cell attachment. However, a few cell types, such as hematopoietic cells, can grow in a suspension. In contrast to adherent cultures, suspension cultures can grow in non-treated cultureware using magnetic stirrers or spinner flasks to agitate the culture media

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Related Experiment Video

Updated: Jun 28, 2026

Generation of Multicue Cellular Microenvironments by UV-Photopatterning of Three-Dimensional Cell Culture Substrates

Generation of Multicue Cellular Microenvironments by UV-Photopatterning of Three-Dimensional Cell Culture Substrates

Published on: June 2, 2022

Arraying heterotypic single cells on photoactivatable cell-culturing substrates.

Yukiko Kikuchi¹, Jun Nakanishi, Takahiro Shimizu

¹World Premier International (WPI) Research Center Initiative, International Center for Materials Nanoarchitectonics (MANA) and National Institute for Materials Sciences (NIMS), Tsukuba, Japan.

Langmuir : the ACS Journal of Surfaces and Colloids

|October 18, 2008

Summary

This summary is machine-generated.

This study presents a photochemical method for precisely arranging different cell types on glass surfaces. The technique uses UV light to activate specific areas, enabling controlled cell adhesion and assembly for studying cell interactions.

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Area of Science:

Biotechnology
Surface Chemistry
Cell Biology

Background:

Precise control over cell placement is crucial for studying cell-cell interactions.
Existing methods for site-selective cell assembly often lack efficiency or versatility.

Purpose of the Study:

To develop a photochemical method for site-selective assembly of heterotypic cells on modified glass substrates.
To investigate the mechanism of photoactivation for controlled cell adhesion.

Main Methods:

Synthesized silane coupling agents with photocleavable protecting groups.
Modified glass coverslips and coated them with bovine serum albumin (BSA).
Used UV irradiation (365 nm) to selectively activate functional groups for cell adhesion.
Analyzed cell adhesion using COS7, NIH3T3, and HEK293 cell lines.
Characterized surface changes using contact angle measurements and X-ray photoelectron spectroscopy.

Main Results:

Developed a photoactivatable substrate using caged amino (NH2) functional groups.
Demonstrated selective and efficient cell adhesion to UV-irradiated regions on the NH2 substrate.
Identified that BSA readsorption and altered passivation properties on NH2 groups contribute to photoactivation.
Successfully positioned heterotypic cells in desired arrangements through repeated UV irradiation and optimized cell seeding.

Conclusions:

The photochemical method enables precise, site-selective assembly of multiple cell types.
This technique is valuable for studying dynamic cell-cell interactions at the single-cell level.
The mechanism involves controlled BSA readsorption and altered surface passivation upon photoactivation.