Silencing STAT3 enhances sensitivity of cancer cells to doxorubicin and inhibits tumor progression

Despite extensive efforts to find new treatments, chemotherapy is still one of the first and foremost choices for cancer treatment. The main problems of using these drugs are the resistance of cancer cells and reducing their sensitivity to chemotherapy as well as the side effects of their systemic a...

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Veröffentlicht in:Life sciences (1973) 2021-06, Vol.275, p.119369-119369, Article 119369
Hauptverfasser: Joshi, Navneet, Hajizadeh, Farnaz, Ansari Dezfouli, Ehsan, Zekiy, Angelina Olegovna, Nabi Afjadi, Mohsen, Mousavi, Seyedeh Mahboubeh, Hojjat-Farsangi, Mohammad, Karpisheh, Vahid, Mahmoodpoor, Ata, Hassannia, Hadi, Dolati, Sanam, Mohammadi, Hamed, Yousefi, Mehdi, Jadidi-Niaragh, Farhad
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container_end_page 119369
container_issue
container_start_page 119369
container_title Life sciences (1973)
container_volume 275
creator Joshi, Navneet
Hajizadeh, Farnaz
Ansari Dezfouli, Ehsan
Zekiy, Angelina Olegovna
Nabi Afjadi, Mohsen
Mousavi, Seyedeh Mahboubeh
Hojjat-Farsangi, Mohammad
Karpisheh, Vahid
Mahmoodpoor, Ata
Hassannia, Hadi
Dolati, Sanam
Mohammadi, Hamed
Yousefi, Mehdi
Jadidi-Niaragh, Farhad
description Despite extensive efforts to find new treatments, chemotherapy is still one of the first and foremost choices for cancer treatment. The main problems of using these drugs are the resistance of cancer cells and reducing their sensitivity to chemotherapy as well as the side effects of their systemic administration. Because STAT3 plays a very important role in the survival and susceptibility of cancer cells to apoptosis, we hypothesized that suppression of STAT3 expression could induce greater susceptibility to DOX-induced cancer cell death. We used pegylated chitosan lactate nanoparticles (NPs) functionalized by TAT peptide and folate to deliver STAT3 siRNA and DOX to cancer cells simultaneously, both in vitro and in vivo. The results showed that NPs could effectively deliver siRNA and DOX to cancer cells, which was associated with suppression of STAT3 expression and increased induction of DOX-mediated cell death. Concomitant delivery of DOX and STAT3 siRNA also suppressed tumor growth in 4T1 and CT26 cancer models, which was associated with induction of anti-tumor immune responses. These findings suggest that the use of NPs can be an effective strategy for the targeted delivery of STAT3-specific siRNA/DOX to cancer cells.
doi_str_mv 10.1016/j.lfs.2021.119369
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subjects Animals
Antibiotics, Antineoplastic - therapeutic use
Apoptosis
Cancer
Cancer therapies
Cell death
Cell Line, Tumor
Chemotherapy
Chitosan
Doxorubicin
Doxorubicin - therapeutic use
Drug resistance
Drug Resistance, Neoplasm - genetics
Female
Folic acid
Gene Silencing
Humans
Immune response
Immunosuppressive agents
Lactic acid
Mice
Mice, Inbred BALB C
Nanoparticle
Nanoparticles
Neoplasm Transplantation
Neoplasms - drug therapy
Neoplasms - pathology
Neoplasms - therapy
RNA, Small Interfering - administration & dosage
RNA, Small Interfering - therapeutic use
Sensitivity enhancement
Side effects
siRNA
STAT3
Stat3 protein
STAT3 Transcription Factor - metabolism
Transcriptome
title Silencing STAT3 enhances sensitivity of cancer cells to doxorubicin and inhibits tumor progression
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