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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

Cell Lines

Cell Lines

A cell line is a population of cells grown in vitro that can be subcultured over several generations. Normal cells cease to divide after a certain number of cell divisions, a process known as replicative senescence. This number, called the Hayflick limit, was conceptualized by Leonard Hayflick in 1961 when he observed that fetal cells grown in culture could only divide 40-60 times. This limit is due to the shortening of the telomeres during each round of cell division, preventing cell division...

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Related Experiment Video

Updated: May 23, 2026

Using Caco-2 Cells to Study Lipid Transport by the Intestine

Using Caco-2 Cells to Study Lipid Transport by the Intestine

Published on: August 20, 2015

Good Caco-2 cell culture practices.

Manuela Natoli¹, Bruno D Leoni, Igea D'Agnano

¹CNR, Institute of Cell Biology and Neurobiology, Rome, Italy.

Toxicology in Vitro : an International Journal Published in Association with BIBRA

|April 3, 2012

Summary

This summary is machine-generated.

Optimizing Caco-2 cell culture by subculturing at 50% confluence enhances intestinal enterocyte differentiation. This improved protocol yields homogeneous, polarized monolayers for reliable in vitro toxicology models.

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Last Updated: May 23, 2026

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Area of Science:

Cell Biology
Toxicology
Biotechnology

Background:

Caco-2 cells form intestinal enterocyte monolayers, serving as a model for the intestinal barrier in in vitro toxicology.
Reproducibility issues in Caco-2 cell studies are often linked to variations in culture conditions.

Purpose of the Study:

To optimize the Caco-2 cell culture protocol for enhanced reproducibility and homogeneity.
To generate a reliable in vitro model of the intestinal barrier for toxicological assessments.

Main Methods:

Modified Caco-2 cell subculturing strategy: cells are subcultured at 50% confluence instead of the standard 80%.
High-density seeding of subcultured cells onto filter inserts.
Culturing to promote spontaneous differentiation into mature intestinal enterocytes.

Main Results:

The optimized protocol yields highly homogeneous and polarized Caco-2 cell monolayers.
The differentiated cells exhibit characteristics similar to native intestinal enterocytes.
Synchronous differentiation across the cell population was observed.

Conclusions:

Early subculturing (50% confluence) maintains Caco-2 cell proliferation potential, leading to more synchronous and homogeneous differentiation.
This optimized protocol improves the reliability of Caco-2 cell monolayers as an in vitro model for intestinal barrier studies and toxicology.