Penicillium chrysogenum, a Vintage Model with a Cutting-Edge Profile in Biotechnology

• Published in: Microorganisms (Basel) Vol. 10; no. 3; p. 573
• Main Authors: Fierro, Francisco, Vaca, Inmaculada, Castillo, Nancy I., García-Rico, Ramón Ovidio, Chávez, Renato
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 06.03.2022; MDPI
• Subjects: Antibiotics; Biotechnology; Biotechnology industry; Enzymes; Fungi; Gene regulation; Genes; Genetic engineering; Genomes; Industrial production; Laboratories; medicine; Metabolites; Mold; multigene family; Mutation; Penicillin; penicillins; Penicillium chrysogenum; Penicillium rubens; phylogeny of penicillin genes; Review; secondary metabolism; Secondary metabolites; Synthetic biology; transcriptional regulation; penicillin; synthetic biology; classical strain improvement; secondary metabolism; transcriptional regulation; penicillin historical development; Penicillium rubens; phylogeny of penicillin genes; Penicillium chrysogenum
• ISSN: 2076-2607; 2076-2607
• DOI: 10.3390/microorganisms10030573

The discovery of penicillin entailed a decisive breakthrough in medicine. No other medical advance has ever had the same impact in the clinical practise. The fungus Penicillium chrysogenum (reclassified as P. rubens) has been used for industrial production of penicillin ever since the forties of the past century; industrial biotechnology developed hand in hand with it, and currently P. chrysogenum is a thoroughly studied model for secondary metabolite production and regulation. In addition to its role as penicillin producer, recent synthetic biology advances have put P. chrysogenum on the path to become a cell factory for the production of metabolites with biotechnological interest. In this review, we tell the history of P. chrysogenum, from the discovery of penicillin and the first isolation of strains with high production capacity to the most recent research advances with the fungus. We will describe how classical strain improvement programs achieved the goal of increasing production and how the development of different molecular tools allowed further improvements. The discovery of the penicillin gene cluster, the origin of the penicillin genes, the regulation of penicillin production, and a compilation of other P. chrysogenum secondary metabolites will also be covered and updated in this work.