Pseudovibriamides from marine sponge bacteria promote flagellar motility via transcriptional modulation.

α-Proteobacteria have been repeatedly isolated from marine sponges and proposed to be beneficial to the host. Bacterial motility is known to contribute to host colonization. We have previously identified pseudovibriamides A and B, produced in culture by Ab134, and shown that pseudovibriamide A promotes flagellar motility.

and Leishmanicidal Activity of Beauvericin.

Leishmaniasis is a worldwide disease caused by more than 20 species of parasites. and are among the main causative agents of cutaneous leishmaniasis, presenting a broad spectrum of clinical forms. As these pathologies lead to unsatisfactory treatment outcomes, the discovery of alternative chemotherapeutic options is urgently required.

Improved production of palitantin by design of experiments and semi-synthesis of palitantin derivatives for bioactivity assessment.

A new method for the production and isolation of (+)-palitantin (1) is herein reported, from cultures of the fungal strain Penicillium sp. AMF1a. (+)-Palitantin was isolated in 160 mg/L yield, as an alternative procedure to obtain 1 at a larger scale.

Batzelladine D, a Marine Natural Product, Reverses the Fluconazole Resistance Phenotype Mediated by Transmembrane Transporters in and Interferes with Its Biofilm: An In Vitro and In Silico Study.

Numerous species are responsible for fungal infections; however, stands out among the others. Treatment with fluconazole is often ineffective due to the resistance phenotype mediated by transmembrane transporters and/or biofilm formation, mechanisms of resistance commonly found in strains. A previous study by our group demonstrated that batzelladine D can inhibit the Pdr5p transporter in .

Discovery, Biosynthesis, Total Synthesis, and Biological Activities of Solanapyrones: [4 + 2] Cycloaddition-Derived Polyketides of Fungal Origin.

Solanapyrones are metabolites bearing a 3,4-dehydrodecalin moiety isolated from cultures of different fungi that are associated with plant diseases. Research on solanapyrones resulted in the first report of a Diels-Alderase enzyme implicated in natural product biosynthesis related to the formation of the 3,4-dehydrodecalin core. In addition, several total syntheses of solanapyrones have been reported, which are also connected with the formation of the characteristic cycloaddition-derived 3,4-dehydrodecalin moiety.