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Halofuginone enhances the anti-tumor effect of ALA-PDT by suppressing NRF2 signaling in cSCC
Abstract
Background 5-aminolevulinic acid-mediated PDT (ALA-PDT) has been used in a variety of skin diseases including cSCC (cutaneous squamous cell carcinoma). Halofuginone (HL) is a less-toxic febrifugine derivative and has inhibitory effects on a variety of cancer cells. For now, there are no published study focusing on the combination use of ALA-PDT with HL to improve clinical efficacy of cSCC. Objective In this study, we will examine the effectiveness of combined treatment of ALA-PDT and HL in cSCC as well as its underlying mechanism. Methods The human epidermoid carcinoma cell line SCL-1 was treated with ALA-PDT or/ and HL, and cell viability, cell migration, ROS production, apoptosis were evaluated by CCK-8, colony formation, scratch assay, DCFH-DA probe, flow cytometry, respectively. The protein expression of NRF2 signaling was examined by western blot. Results HL strengthened ALA-PDT's inhibition of SCL-1 cell viability, migration, as well as NRF2 related β-catenin, p-Erk1/2, p-Akt and p-S6K1 expression. Overexpression of NRF2 conferred resistance to co-treatment's effects on c-Myc, Cyclin D1, Bcl-2, as well as cell proliferation. HL also strengthened ALA-PDT's inhibition of tumor volume in cSCC mouse model and elevated ROS generation of ALA-PDT. Conclusion HL enhances the anti-tumor effect of ALA-PDT in vitro and in vivo. HL has the potential to enhance the anti-tumor effect of ALA-PDT in cSCC via inhibiting NRF2 signaling.
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Targeting these pro-survival signaling pathways has been shown to enhance ALA-PDT response.
“Targeting these pro-survival signaling pathways has been shown to enhance ALA-PDT response.”
From 5-Aminolevulinic Acid as a Theranostic Agent for Tumor Fluorescence Imaging and Photodynamic Therapy (2023) · cites this paper as [140]
Inhibition of NRF2 with an NRF2 inhibitor increases PDT-induced cytotoxicity.
“as does the inhibition of nuclear factor erythroid 2-related factor 2 (NRF2) with an NRF2 inhibitor [140].”
From 5-Aminolevulinic Acid as a Theranostic Agent for Tumor Fluorescence Imaging and Photodynamic Therapy (2023) · cites this paper as [140]
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Metadata
- Authors
- Lv, T., Huang, J., Wu, M., Wang, H., Zeng, Q., & Wang, X.
- Affiliations
- Tongji University (CN)
- Fudan University (CN)
- Corresponding author
- Wang, Hongwei
- Zeng, Qingyu
- Wang, Xiuli
- Venue
- Photodiagnosis and Photodynamic Therapy
- Publisher
- Elsevier BV
- Published
- 2022-03
- Volume
- 37
- Pages
- 102572
- ISSN
- 1572-1000 (ISSN-L)
- OpenAlex
- W3207705617
- Cited by
- 16
- References
- 35
- Citations by year
- 2025: 6 · 2024: 6 · 2023: 1 · 2022: 3
- FWCI
- 1.62
- Type
- journal article
- Language
- en
- Update notices
- erratum (2025-08-01)
- Open access
- closed
- Licence
- Locations
- Photodiagnosis and Photodynamic Therapy (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Shanghai Municipal Health Commission (ZXYXZ-2019011)
- Shanghai Municipal Natural Science Foundation (21ZR1457100)
- National Natural Science Foundation of China (31801187, 82073013)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Photodynamic Therapy Research Studies
- Health Sciences › Medicine › Dermatology › Nonmelanoma Skin Cancer Studies
- Health Sciences › Medicine › Otorhinolaryngology › Head and Neck Cancer Studies
- Keywords
- halofuginone, 5-aminolevulinic acid photodynamic therapy, cutaneous squamous cell carcinoma, Nrf2 signaling, combination therapy, reactive oxygen species, apoptosis, cell migration, cell proliferation, c-Myc, Bcl-2, cyclin D1, ERK1/2, Akt, S6K1, β-catenin, tumor growth inhibition
- MeSH terms
- Aminolevulinic Acid, Animals, Carcinoma, Squamous Cell, Photochemotherapy, Piperidines, Skin Neoplasms, Apoptosis, Photosensitizing Agents, Cell Line, Tumor, NF-E2-Related Factor 2, Mice, Quinazolinones
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