Selective targeting of α7 nicotinic acetylcholine receptor by synthetic peptide mimicking loop I of human SLURP-1 provides efficient and prolonged therapy of epidermoid carcinoma
A431
Ly6/uPAR
SLURP-1
cancer
lynx1
xenograft
α7-nAChR
Journal
Frontiers in cell and developmental biology
ISSN: 2296-634X
Titre abrégé: Front Cell Dev Biol
Pays: Switzerland
ID NLM: 101630250
Informations de publication
Date de publication:
2023
2023
Historique:
received:
11
07
2023
accepted:
19
09
2023
medline:
19
10
2023
pubmed:
19
10
2023
entrez:
19
10
2023
Statut:
epublish
Résumé
α7-Type nicotinic acetylcholine receptor (α7-nAChR) promotes the growth and metastasis of solid tumors. Secreted Ly6/uPAR-Related Protein 1 (SLURP-1) is a specific negative modulator of α7-nAChR produced by epithelial cells. Here, we investigated mechanisms of antiproliferative activity of recombinant SLURP-1 in epidermoid carcinoma A431 cells and activity of SLURP-1 and synthetic 21 a.a. peptide mimicking its loop I (Oncotag) in a xenograft mice model of epidermoid carcinoma. SLURP-1 inhibited the mitogenic pathways and transcription factors in A431 cells, and its antiproliferative activity depended on α7-nAChR. Intravenous treatment of mice with SLURP-1 or Oncotag for 10 days suppressed the tumor growth and metastasis and induced sustained changes in gene and microRNA expression in the tumors. Both SLURP-1 and Oncotag demonstrated no acute toxicity. Surprisingly, Oncotag led to a longer suppression of pro-oncogenic signaling and downregulated expression of pro-oncogenic miR-221 and upregulated expression of KLF4 protein responsible for control of cell differentiation. Affinity purification revealed SLURP-1 interactions with both α7-nAChR and EGFR and selective Oncotag interaction with α7-nAChR. Thus, the selective inhibition of α7-nAChRs by drugs based on Oncotag may be a promising strategy for cancer therapy.
Identifiants
pubmed: 37854069
doi: 10.3389/fcell.2023.1256716
pii: 1256716
pmc: PMC10580074
doi:
Types de publication
Journal Article
Langues
eng
Pagination
1256716Informations de copyright
Copyright © 2023 Shlepova, Shulepko, Shipunova, Bychkov, Kukushkin, Chulina, Azev, Shramova, Kazakov, Ismailova, Palikova, Palikov, Kalabina, Shaykhutdinova, Slashcheva, Tukhovskaya, Dyachenko, Murashev, Deyev, Kirpichnikov, Shenkarev and Lyukmanova.
Déclaration de conflit d'intérêts
The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
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