Polyethylenimine-Functionalized Carbon Dots for Delivery of CRISPR/Cas9 Complexes

Iman Hashemzadeh, Akbar Hasanzadeh, Fatemeh Radmanesh, Beheshteh Khodadadi Chegeni, Elaheh Sadat Hosseini, Jafar Kiani, Ali Shahbazi, Marzieh Naseri, Yousef Fatahi, Helena Nourizadeh, Behjat Kheiri Yeghaneh Azar, Amir R. Aref, Yong Liu, Michael R. Hamblin, Mahdi Karimi

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

Carbon dots (CDs) have become the focus of many studies due to their outstanding optical properties and good biocompatibility. We investigated their potential application to produce a smart and highly efficient yet nontoxic nanovector for gene delivery. This was achieved by conjugating PEI1.8k-functionalized CDs (synthesized by one-step microwave-assisted pyrolysis) with arginine-disulfide linkers to produce CD-PEI1.8k-Arg nanoparticles. This nanovector could deliver p-CRISPR (9.3 kb) into different types of cell lines with higher efficiency compared to native PEI1.8k or PEI25k. CD-PEI1.8k-Arg also maintained its outstanding transfection efficiency at a high serum concentration and low p-CRISPR dose, compared to PEI25k, which was ineffective under those conditions. Additionally, CD-PEI1.8k-Arg could knock out the GFP gene with great efficiency by delivering the required components of CRISPR/Cas9, including a plasmid encoding Cas9, sgRNA targeting GFP, and Cas9/sgRNA ribonucleoproteins (RNPs) into the HEK 293T-GFP cells. Moreover, the nanoparticles showed potential for the local delivery of p-CRISPR into brain tissue. The remarkable properties of CD-PEI1.8k-Arg could enable the development of a safe, highly efficient gene-delivery nanovector for the treatment of various diseases in the near future.

Original languageEnglish
Pages (from-to)7979-7992
Number of pages14
JournalACS Applied Bio Materials
Volume4
Issue number11
DOIs
Publication statusPublished - 15 Nov 2021

Keywords

  • CRISPR
  • brain delivery
  • carbon dots
  • gene delivery
  • smart nanoparticles

ASJC Scopus subject areas

  • Biomaterials
  • General Chemistry
  • Biomedical Engineering
  • Biochemistry (medical)

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