A Design of Experiment Approach to Optimize Spray-Dried Powders Containing and Bacteriophages
Overview
Authors
Affiliations
In the present study, we evaluated the effect of spray-drying formulations and operating parameters of a laboratory-scale spray-dryer on the characteristics of spray-dried powders containing two bacteriophages exhibiting different morphotypes: a podovirus (LUZ19) and a myovirus (14-1). We optimized the production process for bacteriophage-loaded powders, with an emphasis on long-term storage under ICH (international conference on harmonization) conditions. D-trehalose-/L-isoleucine-containing bacteriophage mixtures were spray-dried from aqueous solutions using a Büchi Mini Spray-dryer B-290 (Flawil, Switzerland). A response surface methodology was used for the optimization of the spray-drying process, with the following as-evaluated parameters: Inlet temperature, spray gas flow rate, and the D-trehalose/L-isoleucine ratio. The dried powders were characterized in terms of yield, residual moisture content, and bacteriophage lytic activity. L-isoleucine has demonstrated a positive impact on the activity of LUZ19, but a negative impact on 14-1. We observed a negligible impact of the inlet temperature and a positive correlation of the spray gas flow rate with bacteriophage activity. After optimization, we were able to obtain dry powder preparations of both bacteriophages, which were stable for a minimum of one year under different ICH storage conditions (up to and including 40 °C and 75% relative humidity).
Villicana C, Rubi-Rangel L, Amarillas L, Lightbourn-Rojas L, Carrillo-Fasio J, Leon-Felix J Antibiotics (Basel). 2024; 13(7).
PMID: 39061333 PMC: 11273794. DOI: 10.3390/antibiotics13070651.
Bacteriophage Production in Compliance with Regulatory Requirements.
Pirnay J, Merabishvili M, De Vos D, Verbeken G Methods Mol Biol. 2023; 2734:89-115.
PMID: 38066364 DOI: 10.1007/978-1-0716-3523-0_6.
Tabare E, Dauchot T, Cochez C, Glonti T, Antoine C, Laforet F Pharmaceutics. 2023; 15(6).
PMID: 37376051 PMC: 10305712. DOI: 10.3390/pharmaceutics15061602.
Advancements in the Use of Bacteriophages to Combat the Kiwifruit Canker Phytopathogen pv. .
Luo J, Dai D, Lv L, Ahmed T, Chen L, Wang Y Viruses. 2022; 14(12).
PMID: 36560706 PMC: 9785728. DOI: 10.3390/v14122704.
Wdowiak M, Paczesny J, Raza S Pharmaceutics. 2022; 14(9).
PMID: 36145682 PMC: 9502844. DOI: 10.3390/pharmaceutics14091936.