Serum- and Bovine Pituitary Extract (BPE)-Free Media for Airway Epithelial Cells
What is Air-Liquid Interface Culture?
Air-liquid interface (ALI) culture is the most physiologically relevant model for studying the respiratory epithelium in vitro. In these cultures, airway epithelial basal cells are seeded in a tissue culture insert with a porous membrane. After cells reach confluence, the medium is removed from the apical chamber to expose the cells to the air. This “air-lift”, in combination with a specialized medium in the basal chamber, triggers basal cell differentiation to produce a pseudostratified mucociliary epithelium that can be used to study cell biology, respiratory disease, toxicity of inhaled substances and more. In this video Dr. Samuel Wadsworth discusses how ALI cultures hold enormous potential for respiratory research.
Modeling the Human Airway
Primary airway epithelial cells must be cultured at the air-liquid interface in order to recapitulate the pseudostratified mucociliary phenotype observed in vivo. Cells differentiated with the PneumaCult™ culture system exhibit the appropriate three-dimensional architecture with basal cells lining the transwell inserts and ciliated and goblet cells extending to the apical surface. In this video Dr. Michael Riedel provides an overview of PneumaCult™-ALI and how it is optimized for ALI culture.
Why Use PneumaCult™?
- Primary human airway epithelial cells differentiated with PneumaCult™-ALI closely model the human airway.
- Defined and BPE-free PneumaCult™ media formulations maximize experimental reproducibility.
- Simple and optimized protocols make PneumaCult™ media easy to use.
Why Go BPE-Free?
Bovine pituitary extract (BPE) is an undefined component used in several types of serum-free medium. However its presence can lead to experimental variability. Removing BPE reduces the variability and maximizes experimental reproducibility. The PneumaCult™ system has been formulated to be BPE-free while maintaining the highest possible performance of the media. See the results when PneumaCult™-Ex goes head-to-head with a BPE-containing medium.
Why Use PneumaCult™-Ex Plus?Current feeder-free expansion media for culturing primary human airway epithelial cells can only support a limited number of passages while maintaining robust mucociliary differentiation potential. Unfortunately, this limitation restricts the number of experiments researchers can perform using primary cells. PneumaCult™-Ex Plus is a feeder- and BPE-free culture medium that puts an end to this limitation: researchers can expand cells for a higher number of passages during expansion culture, while maintaining mucociliary differentiation potential during the subsequent ALI culture. Ultimately, PneumaCult™-Ex Plus enables researchers to perform more experiments with a single sample. See the results when PneumaCult™-Ex Plus goes head-to-head with other commercially-available expansion media.
The PneumaCult™ Culture System
Figure 1. Overview of the PneumaCult™ Culture System
Expansion of human bronchial epithelial cells (HBECs) in submerged culture is performed with PneumaCult™-Ex Plus or PneumaCult™-Ex. During the early “Expansion Phase” of the ALI culture procedure, PneumaCult™-Ex Plus or PneumaCult™-Ex is applied to the apical and basal chambers. Upon reaching confluence, the culture is air-lifted by removing the culture medium from both chambers, and adding PneumaCult™-ALI to the basal chamber only. Differentiation into a pseudostratified mucociliary epithelium is obtained following 21-28 days of incubation and can be maintained for more than one year.
Epithelial Cell Biology
Stem Cell Biology
Asthma, Allergies, Infection and Disease
Reeves SR et al. (2015) Fibroblast-myofibroblast transition is differentially regulated by bronchial epithelial cells from asthmatic children. Respir Res 16: 21.
Xu J et al. (2015) Expression of surfactant protein D in airways of asthmatics and interleukin-13 modulation of surfactant protein Din human models of airway epithelium. Respir Res 16: 26.
Reeves SR et al. (2014) Asthmatic airway epithelial cells differentially regulate fibroblast expression of extracellular matrix components. J Allergy Clin Immunol 134(3): 663-670.
Effects of Pollutants, Cigarette Smoke and Other Toxic Substances
Cao X et al. (2015) Tight junction disruption by cadmium in an in vitro human airway tissue model. Respir Res 16:30.
Schamberger AC et al. (2015) Cigarette smoke alters primary human bronchial epithelial cell differentiation at the air-liquid interface. Sci Rep 5:8163.
Schamberger AC et al. (2014) Cigarette Smoke–Induced Disruption of Bronchial Epithelial Tight Junctions Is Prevented by Transforming Growth Factor-β. Am J Respir Cell Mol Biol 50(6): 1040-52.