Co-delivery of IL-12 cytokine gene and cisplatin prodrug by a polymetformin-conjugated nanosystem for lung cancer chemo-gene treatment through chemotherapy sensitization and tumor microenvironment modulation

Copyright © 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved..

The combination of chemotherapy and gene therapy has been indicated as a promising approach for cancer therapy. However, this combination strategy is still faced a challenge by the lack of suitable carriers to co-loaded chemotherapeutic drug and gene into one single nanoplatform. In this study, a tumor-targeted HC/pIL-12/polyMET micelleplexes were developed for the co-loading and co-delivery of cisplatin (CDDP) and plasmid encoding interleukin-12 gene (pIL-12), which would be utilized to generate synergistic actions through chemotherapy sensitization and microenvironment modulation. The HC/pIL-12/polyMET exhibited desirable particle size, superior serum stability, effective intracellular CDDP release and pIL-12 transfection efficiency. More important, the HC/pIL-12/polyMET generated the enhanced LLC cell proliferation inhibition and apoptosis induction efficiency. The long-circulating HC/pIL-12/polyMET micelleplexes promoted the accumulation of CDDP and pIL-12 in tumor site, which resulted in significantly inhibiting the growth of lung cancer, and prolonging the overall survival of tumor-bearing mice. The underlying immune mechanism demonstrated the combination of CDDP and pIL-12 activated immune effector cells to release IFN-γ and induced M1-type differentiation of tumor-related macrophages, thereby generating synergistic chemoimmunotherapy effect. Taken together, this study may provide an effective strategy for drug/gene co-delivery and cancer chemoimmunotherapy. STATEMENT OF SIGNIFICANCE: Chemoimmunotherapy has been indicated as an approach to improve efficacy of cancer therapy. Herein, a tumor-targeted micelleplexes (HC/pIL-12/polyMET) were developed for the co-delivery of cisplatin (CDDP) and plasmid encoding IL-12 gene (pIL-12), which can employ the synergistic effects through chemotherapy sensitization and microenvironment modulation. The HC/pIL-12/polyMET exhibited desirable particle size, superior serum stability, high gene transfection efficiency and antitumor activity on tumor cell proliferation inhibition and apoptosis induction. More importantly, the long-circulating HC/pIL-12/polyMET micelleplexes could effectively accumulate in tumor sites and then rapidly release the CDDP and pIL-12, significantly inhibit the growth of lung cancer. This strategy provides a new concept for chemo-gene combination with a strengthened overall therapeutic efficacy of chemoimmunotherapy.

Medienart:

E-Artikel

Erscheinungsjahr:

2021

Erschienen:

2021

Enthalten in:

Zur Gesamtaufnahme - volume:128

Enthalten in:

Acta biomaterialia - 128(2021) vom: 01. Juli, Seite 447-461

Sprache:

Englisch

Beteiligte Personen:

Sun, Yue [VerfasserIn]
Yang, Jiayu [VerfasserIn]
Yang, Tong [VerfasserIn]
Li, Yifan [VerfasserIn]
Zhu, Rongyue [VerfasserIn]
Hou, Yanhui [VerfasserIn]
Liu, Yanhua [VerfasserIn]

Links:

Volltext

Themen:

187348-17-0
Antineoplastic Agents
Chemo-gene combination therapy
Cisplatin
Cisplatin prodrug
Cytokines
HC/pIL-12/polyMET micelleplexes
Interleukin-12
Journal Article
Lung cancer
PIL-12
Prodrugs
Q20Q21Q62J
Research Support, Non-U.S. Gov't

Anmerkungen:

Date Completed 02.08.2021

Date Revised 02.08.2021

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.actbio.2021.04.034

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM324479212