iScience (Nov 2019)

Plant-Derived Exosomal Nanoparticles Inhibit Pathogenicity of Porphyromonas gingivalis

  • Kumaran Sundaram,
  • Daniel P. Miller,
  • Anil Kumar,
  • Yun Teng,
  • Mohammed Sayed,
  • Jingyao Mu,
  • Chao Lei,
  • Mukesh K. Sriwastva,
  • Lifeng Zhang,
  • Yan Jun,
  • Michael L. Merchant,
  • Liqing He,
  • Yuan Fang,
  • Shuangqin Zhang,
  • Xiang Zhang,
  • Juw W. Park,
  • Richard J. Lamont,
  • Huang-Ge Zhang

Journal volume & issue
Vol. 21
pp. 308 – 327

Abstract

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Summary: Plant exosomes protect plants against infection; however, whether edible plant exosomes can protect mammalian hosts against infection is not known. In this study, we show that ginger exosome-like nanoparticles (GELNs) are selectively taken up by the periodontal pathogen Porphyromonas gingivalis in a GELN phosphatidic acid (PA) dependent manner via interactions with hemin-binding protein 35 (HBP35) on the surface of P. gingivalis. Compared with PA (34:2), PA (34:1) did not interact with HBP35, indicating that the degree of unsaturation of PA plays a critical role in GELN-mediated interaction with HBP35. On binding to HBP35, pathogenic mechanisms of P. gingivalis were significantly reduced following interaction with GELN cargo molecules, including PA and miRs. These cargo molecules interacted with multiple pathogenic factors in the recipient bacteria simultaneously. Using edible plant exosome-like nanoparticles as a potential therapeutic agent to prevent/treat chronic periodontitis was further demonstrated in a mouse model. : Bacteriology; Biochemistry; Biological Sciences; Immunology; Microbiology; Molecular Biology; Oral Microbiology Subject Areas: Bacteriology, Biochemistry, Biological Sciences, Immunology, Microbiology, Molecular Biology, Oral Microbiology