Schistosomicidal activity of kaurane, labdane and clerodane-type diterpenes obtained by fungal transformation. (November 2020)

• Record Type: Journal Article
• Authors: Oliveira, Larissa Costa; Porto, Thiago Souza; Junior, Arthur Henrique Colmanette; Santos, Mario Ferreira Conceição; Ramos, Henrique Pereira; Braun, Gláucia Hollaender; de Lima Paula, Lucas Antonio; Bastos, Jairo Kenupp; Furtado, Niege Araçari Jacometti Cardoso; Parreira, Renato Luis Tame; Veneziani, Rodrigo Cassio Sola; Magalhães, Lizandra Guidi; Ambrósio, Sérgio Ricardo
• Is Part Of: Process biochemistry. Volume 98(2020)
• Page Start: 34
• Page End: 40
• Publication Date: 2020-11
• Subjects: Copaifera spp. -- Diterpenes -- Schistosoma mansoni -- Fungal transformation; Biochemical engineering -- Periodicals; Biotechnology -- Periodicals; Biochemistry -- periodicals; Biotechnology -- periodicals; Chemical Engineering -- periodicals; Génie biochimique -- Périodiques; Biotechnologie -- Périodiques; Biochemical engineering; Biotechnology; Periodicals; 660.63
• DOI: 10.1016/j.procbio.2020.07.020
• Languages: English
• ISSNs: 1359-5113

Abstract

Graphical abstract: Highlights: Diterpenes are a source of potential leading compounds to treat schistosomiasis. Derivatives were obtained by fungal transformation with Aspergillus and Cunninghamella. Three precursors and ten diterpene derivatives were evaluated against Schistosoma mansoni. 7α-acetoxy- ent -kaur-16-en-19-oic acid (KA5) and ent -hardwickiic acid (HA) were the most active ones. KA5 and HA are potential candidates for schistosomicidal drug discovery. Abstract: Schistosomiasis continues to be a huge challenge for researchers, pharmaceutical companies, and governments in developing countries. Diterpene compounds are good source for the development of novel potential leading compounds to treat schistosomiasis. We are reporting herein the schistosomicidal activity of ent -kaurenoic acid, ent -copalic acid, ent -hardwickiic acid, isolated from oleoresins of Copaifera spp, and of their derivatives obtained by fungal transformation with strains of Aspergillus fumigatus, A. terreus, A. phoenicis and A. ochraceus, and of Cunninghamella echinulata e C. elegans . The in vitro antiparasitical assays were performed using adult worm pairs of Schistosoma mansoni for the evaluation of the worm pairing, egg production, and eggs development. Ten kaurane, labdane and clerodane-type diterpenes were obtained by fungal transformation and 7α-acetoxy- ent -kaur-16-en-19-oic acid and ent -hardwickiic acid were the most active ones by causing mortality of 100 % of the parasites within 24 h (concentrations of 100.0 and 200.0 μM) and displaying respective IC50 values for 24, 48 and 72 h of 56.7, 37.6 and 29.2 μM and 29.6, 30.8 and 25.7 μM. Additionally, 7α-acetoxy- ent -kaur-16-en-19-oic acid and ent -hardwickiic acid highly reduced the number of laid eggs at 6.25 and 12.5 μM, respectively. These diterpenes should be further investigated as potential candidates for antiparasitic drug discovery.