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Suyanto E, Gorantla JN, Santi M, Fatchiyah F, Ketudat-Cairns M, Talabnin C, Ketudat Cairns JR. Enzymatic synthesis of phenolic acid glucosyl esters to test activities on cholangiocarcinoma cells. Appl Microbiol Biotechnol 2024; 108:69. [PMID: 38183488 DOI: 10.1007/s00253-023-12895-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 10/09/2023] [Accepted: 10/30/2023] [Indexed: 01/08/2024]
Abstract
While glycoside hydrolase family 1 (GH1) enzymes mostly catalyze hydrolysis reactions, rice Os9BGlu31 preferentially catalyzes transglycosylation to transfer a glucosyl moiety to another aglycone moiety to form a new glycosylated compound through a retaining mechanism. In this study, Os9BGlu31 was used to synthesize eight phenolic acid glucosyl esters, which were evaluated for activities in cholangiocarcinoma cells. The transglycosylation products of Os9BGlu31 wild type and its mutant variants were detected, produced on a milligram scale, and purified, and their structures were characterized by NMR spectroscopy. The transglycosylation products were evaluated by antioxidant and anti-proliferative assays, followed by an anti-migration assay for the selected phenolic acid glucosyl ester. Os9BGlu31 mutants produced higher yield and activity than wild-type enzymes on phenolic acids to produce phenolic acid glucosyl esters. Among these, gallic acid glucosyl ester (β-glucogallin) had the highest antioxidant activity and anti-proliferative activity in cholangiocarcinoma cells. It also inhibited the migration of cholangiocarcinoma cells. Our study demonstrated that rice Os9BGlu31 transglucosidase is a promising enzyme for glycosylation of bioactive compounds in one-step reactions and provides evidence that β-glucogallin inhibits cell proliferation and migration of cholangiocarcinoma cells. KEY POINTS: • Os9BGlu31 transglucosidases produced phenolic acid glucosyl esters for bioactivity testing. • Phenolic acid glucosyl esters were tested for cytotoxicity in cholangiocarcinoma cells. • β-Glucogallin displayed the highest inhibition of cholangiocarcinoma cell growth.
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Affiliation(s)
- Eko Suyanto
- School of Chemistry, Institute of Sciences, Suranaree University of Technology, Nakhon Ratchasima, Thailand
- Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Nakhon Ratchasima, Thailand
- Biology Department, Faculty of Mathematics and Natural Sciences, Brawijaya University, Malang, Indonesia
| | - Jaggaiah N Gorantla
- School of Chemistry, Institute of Sciences, Suranaree University of Technology, Nakhon Ratchasima, Thailand
- Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Maniganda Santi
- School of Chemistry, Institute of Sciences, Suranaree University of Technology, Nakhon Ratchasima, Thailand
- Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Fatchiyah Fatchiyah
- Biology Department, Faculty of Mathematics and Natural Sciences, Brawijaya University, Malang, Indonesia
| | - Mariena Ketudat-Cairns
- Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Nakhon Ratchasima, Thailand
- School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Chutima Talabnin
- School of Chemistry, Institute of Sciences, Suranaree University of Technology, Nakhon Ratchasima, Thailand.
| | - James R Ketudat Cairns
- School of Chemistry, Institute of Sciences, Suranaree University of Technology, Nakhon Ratchasima, Thailand.
- Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Nakhon Ratchasima, Thailand.
- Laboratory of Biochemistry, Chulabhorn Research Institute, Bangkok, Thailand.
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