Co-delivery of immunochemotherapeutic by classified targeting based on chitosan and cyclodextrin derivatives

Int J Biol Macromol. 2023 Jan 31:226:1396-1410. doi: 10.1016/j.ijbiomac.2022.11.253. Epub 2022 Nov 26.

Abstract

Herein, a cyclodextrin derivative (R6RGD-CMβCD) with tumor target and a carboxymethyl chitosan derivative (M2pep-CMCS) with tumor-associated macrophages 2 (TAM2) target were successfully synthesized, respectively. DOX-loaded nanoparticles (R6RGD-CMβCD@DOX NPs, RCNPDOX) and R848-loaded nanoparticles (M2pep-CMCS@R848 NPs, MCNPR848) were prepared. Furthermore, the RCNPDOX and MCNPR848 exhibited good DOX and R848 absorption. Meanwhile, the synergetic cell toxicity of RCNPDOX and MCNPR848 was found. Additionally, RCNPDOX + MCNPR848 nanoparticles greatly promoted the expression levels of cleaved Caspase3, which indicated that the nanoparticles could induce cell apoptosis. At the same time, the immunohistochemical images exhibited that RCNPDOX + MCNPR848 group could effectively transform the phenotype of tumor-associated macrophages. Importantly, in vivo experiments revealed that RCNPDOX + MCNPR848 NPs exerted excellent anticancer effects in tumor-bearing mice. To summarize, RCNPDOX + MCNPR848 NPs are effective anticancer treatment combining chemotherapy and immunotherapy, M2pep-CMCS and R6RGD-CMβCD are good delivery materials.

Keywords: Breast cancer; Classified target; DOX; Immunochemotherapy; R848.

MeSH terms

  • Animals
  • Apoptosis
  • Chitosan*
  • Doxorubicin / pharmacology
  • Mice
  • Nanoparticles*
  • Neoplasms* / drug therapy

Substances

  • Doxorubicin
  • Chitosan