Related Experiment Video
Updated: May 7, 2026
Candida albicans Biofilm Chip CaBChip for High-throughput Antifungal Drug Screening
Published on: July 18, 2012
Drug susceptibility of matrix-encapsulated Candida albicans nano-biofilms
Anand Srinivasan1, Celia Macias Gupta, C Mauli Agrawal
1Department of Biomedical Engineering, The University of Texas at San Antonio, San Antonio, Texas, 78249.
Abstract:
The rise in the use of biomedical devices and implants has seen a concomitant surge in the advent of device-related nosocomial (hospital-acquired) infections of bacterial and fungal origins. The most common nosocomial fungal infection is candidiasis caused mainly by Candida albicans biofilms. Candidiasis is associated with an unacceptably high mortality rate, and there is an urgent need for the discovery of new antifungal drugs that prevent or control biofilm formation. To this end, we recently developed an ultra-high-throughput microarray platform consisting of nano-scale biofilms of C. albicans encapsulated in collagen or alginate hydrogel matrices for antifungal drug screening. Here, we report that the choice of matrix influences the apparent susceptibility of C. albicans to the common antifungal drugs, amphotericin B, and caspofungin. While amphotericin B is equally effective against biofilms grown in collagen and alginate matrices, caspofungin is effective only against biofilms grown only in alginate, but not in collagen. We demonstrate differences in the distribution of the drugs in the two matrices may contribute to the susceptibility of C. albicans nano-biofilms. In a larger context, our results highlight the importance of the choice of matrix as a parameter in 3D cell encapsulation, and suggest a screening strategy to predict drug performance in vivo.
Insights
The matrix used to grow Candida albicans biofilms impacts antifungal drug effectiveness. Choosing the right hydrogel matrix is crucial for accurate drug screening and predicting in vivo performance.
Area of Science:
- Biomedical Engineering
- Mycology
- Infectious Diseases
Background:
- Device-related infections, particularly candidiasis from Candida albicans biofilms, pose a significant threat in healthcare settings.
- High mortality rates associated with candidiasis necessitate novel antifungal strategies targeting biofilm formation.
- Current antifungal drug screening methods require optimization for predicting in vivo efficacy.
Purpose of the Study:
- To evaluate the influence of different hydrogel matrices (collagen vs. alginate) on the efficacy of antifungal drugs against nano-scale Candida albicans biofilms.
- To investigate the role of drug distribution within matrices in determining biofilm susceptibility.
- To propose an improved strategy for antifungal drug screening using 3D cell encapsulation.
Main Methods:
- Development of an ultra-high-throughput microarray platform for encapsulating nano-scale Candida albicans biofilms in collagen and alginate hydrogels.
- Antifungal susceptibility testing of biofilms against amphotericin B and caspofungin within the different matrices.
- Analysis of drug distribution within the hydrogel matrices.
Main Results:
- The choice of hydrogel matrix significantly altered the apparent susceptibility of Candida albicans biofilms to caspofungin.
- Amphotericin B demonstrated consistent efficacy against biofilms in both collagen and alginate matrices.
- Caspofungin was effective against biofilms in alginate but not in collagen, potentially due to differential drug distribution.
Conclusions:
- The matrix material is a critical parameter in 3D cell encapsulation for antifungal drug screening.
- Drug performance in vitro can be matrix-dependent, highlighting the need for matrix selection in screening platforms.
- This study suggests a refined screening strategy to better predict antifungal drug efficacy in clinical settings.
More Related Videos
06:50A Soluble Tetrazolium-Based Reduction Assay to Evaluate the Effect of Antibodies on Candida tropicalis Biofilms
Published on: September 16, 2022
07:19A 96 Well Microtiter Plate-based Method for Monitoring Formation and Antifungal Susceptibility Testing of Candida albicans Biofilms
Published on: October 21, 2010