Synergistic combination of Sapindoside A and B: A novel antibiofilm agent against Cutibacterium acnes

  • Microbiol Res. 2022 Jan:254:126912. doi: 10.1016/j.micres.2021.126912.
Min-Ping Wei  1 ,  Hang Yu  1 ,  Ya-Hui Guo  1 ,  Yu-Liang Cheng  1 ,  Yun-Fei Xie  1 ,  Wei-Rong Yao  2
Affiliations
  • 1. State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, No. 1800 Lihu Avenue, Wuxi, 214122, Jiangsu Province, China.
  • 2. State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, No. 1800 Lihu Avenue, Wuxi, 214122, Jiangsu Province, China. Electronic address: [email protected].
PMID: 34742105 DOI: 10.1016/j.micres.2021.126912
Abstract

Sapindus saponins extracted from Sapindus mukorossi Gaertn. have been reported to exert Antibacterial activity against Cutibacterium acnes (C. acnes). However, there are no reports about their potentials against its biofilm, which is a major contributor to the Antibiotic resistance of C. acnes. This study aimed to investigate the synergistic antibiofilm activity and action of the combination of Sapindoside A and B (SAB) against C. acnes. SAB with sub-MICs significantly inhibited the early-formed and mature biofilm of C. acnes and decreased the adhesion and cell surface hydrophobicity (p < 0.05). Also, SAB greatly reduced the production of exopolysaccharide and Lipase (p < 0.05), and the binding mode of SAB and Lipase was predicted by molecular docking, via hydrogen bonds and hydrophobic interactions. Biofilm observed with electron microscopies further confirmed the high antibiofilm activity of SAB against C. acnes. Furthermore, a significant down-regulation of biofilm biosynthesis-associated genes was observed. The combination index explained the synergistic effects of SAB leading to the above results, and the contribution of SA was greater than that of SB. The current results showed that SAB had synergistic antibiofilm activity against C. acnes, and the Sapindoside A played a major role, indicating that SAB could be a natural antiacne additive against C. acnes biofilm-associated infections.

Keywords
Antibiofilm; Cutibacterium acnes; Drug resistance; Sapindus saponin; Synergistic.
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