Carbon dot nanoparticles exert inhibitory effects on human platelets and reduce mortality in mice with acute pulmonary thromboembolism

Tzu Yin Lee, Thanasekaran Jayakumar, Pounraj Thanasekaran, King Chuen Lin, Hui Min Chen, Pitchaimani Veerakumar, Joen Rong Sheu

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


The inhibition of platelet activation is considered a potential therapeutic strategy for the treatment of arterial thrombotic diseases; therefore, maintaining platelets in their inactive state has garnered much attention. In recent years, nanoparticles have emerged as important players in modern medicine, but potential interactions between them and platelets remain to be extensively investigated. Herein, we synthesized a new type of carbon dot (CDOT) nanoparticle and investigated its potential as a new antiplatelet agent. This nanoparticle exerted a potent inhibitory effect in collagen-stimulated human platelet aggregation. Further, it did not induce cytotoxic effects, as evidenced in a lactate dehydrogenase assay, and inhibited collagen-activated protein kinase C (PKC) activation and Akt (protein kinase B), c-Jun N-terminal kinase (JNK), and p38 mitogen-activated protein kinase (MAPK) phosphorylation. The bleeding time, a major side-effect of using antiplatelet agents, was unaffected in CDOT-treated mice. Moreover, our CDOT could reduce mortality in mice with ADP-induced acute pulmonary thromboembolism. Overall, CDOT is effective against platelet activation in vitro via reduction of the phospholipase C/PKC cascade, consequently suppressing the activation of MAPK. Accordingly, this study affords the validation that CDOT has the potential to serve as a therapeutic agent for the treatment of arterial thromboembolic disorders.

Original languageEnglish
Article number1254
Pages (from-to)1-15
Number of pages15
Issue number7
Publication statusPublished - Jul 2020


  • Arterial thrombosis
  • Bleeding disorder
  • Carbon dots
  • Nanoparticles
  • Platelet aggregation
  • Signaling molecules

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Science(all)


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