Cited by 89Photodynamic Therapy Research StudiesDrug Transport and Resistance MechanismsNanoplatforms for cancer theranostics

ABCG2 transporter inhibitor restores the sensitivity of triple negative breast cancer cells to aminolevulinic acid-mediated photodynamic therapy

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Palasuberniam, Pratheeba, Yang, Xue, Kraus, Daniel, Jones, Patrick, Myers, Kenneth A., Chen, Bin·2015·Scientific Reports

Abstract

Photosensitizer protoporphyrin IX (PpIX) fluorescence, intracellular localization and cell response to photodynamic therapy (PDT) were analyzed in MCF10A normal breast epithelial cells and a panel of human breast cancer cells including estrogen receptor (ER) positive, human epidermal growth factor receptor 2 (HER2) positive and triple negative breast cancer (TNBC) cells after treatment with PpIX precursor aminolevulinic acid (ALA). Although PpIX fluorescence was heterogeneous in different cells, TNBC cells showed significantly lower PpIX level than MCF10A and ER- or HER2-positive cells. PpIX fluorescence in TNBC cells also had much less mitochondrial localization than other cells. There was an inverse correlation between PpIX fluorescence and cell viability after PDT. Breast cancer cells with the highest PpIX fluorescence were the most sensitive to ALA-PDT and TNBC cells with the lowest PpIX level were resistant to PDT. Treatment of TNBC cells with ABCG2 transporter inhibitor Ko143 significantly increased ALA-PpIX fluorescence, enhanced PpIX mitochondrial accumulation and sensitized cancer cells to ALA-PDT. Ko143 treatment had little effect on PpIX production and ALA-PDT in normal and ER- or HER2-positive cells. These results demonstrate that enhanced ABCG2 activity renders TNBC cell resistance to ALA-PDT and inhibiting ABCG2 transporter is a promising approach for targeting TNBC with ALA-based modality.

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Crossref · 10.1038/srep13298

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  • Ko143 treatment also preferentially induces PpIX accumulation in mitochondria after ALA, sensitizing tumor cells to PDT-induced apoptosis.

    “In addition to the increase in total PpIX fluorescence, Ko143 treatment also preferentially induces PpIX accumulation in mitochondria after ALA, therefore, sensitizing tumor cells to PDT-induced apoptosis [123,125,128].”

    From 5-Aminolevulinic Acid as a Theranostic Agent for Tumor Fluorescence Imaging and Photodynamic Therapy (2023) · cites this paper as [125]

    The Results report that Ko143 increased mitochondrial PpIX localization after ALA and sensitized two triple-negative breast cancer cell lines to ALA-PDT. The Discussion links the increased mitochondrial accumulation to that sensitization. The paper reports reduced cell survival, however, not PDT-induced apoptosis specifically. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • Ko143 is able to significantly enhance ALA-PpIX fluorescence in different human tumor cell lines including skin, bladder, breast, kidney, and brain tumors.

    “Ko143 is able to significantly enhance ALA-PpIX fluorescence in different human tumor cell lines including skin, bladder, breast, kidney, and brain tumors [122,123,124,125,126,127].”

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Authors
Palasuberniam, P., Yang, X., Kraus, D., Jones, P., Myers, K. A., & Chen, B.
Affiliations
University of the Sciences (US)
Corresponding author
Chen, Bin
Venue
Scientific Reports
Published
2015-08-18
Volume
5
Issue
1
Pages
13298-13298
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2419531088
Cited by
89
References
31
Citations by year
2026: 4 · 2025: 2 · 2024: 11 · 2023: 8 · 2022: 5 · 2021: 17 · 2020: 12 · 2019: 12 · 2018: 7 · 2017: 6 · 2016: 4 · 2015: 1
FWCI
4.75
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Minerva Access (University of Melbourne) (submittedVersion, cc-by)
Funders
  • American Cancer Society (RSG-10-035-01-CCE)
  • National Heart, Lung, and Blood Institute (K22HL113069)
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Photodynamic Therapy Research Studies
  • Health Sciences › Medicine › Oncology › Drug Transport and Resistance Mechanisms
  • Physical Sciences › Engineering › Biomedical Engineering › Nanoplatforms for cancer theranostics
Keywords
ABCG2, Ko143, 5-aminolevulinic acid, photodynamic therapy, protoporphyrin IX, triple-negative breast cancer, photosensitizer accumulation, mitochondrial localization, drug resistance, ABCG2 inhibitors, breast cancer cell lines
MeSH terms
ATP Binding Cassette Transporter, Subfamily G, Member 2, Adenosine, Cell Survival, Dose-Response Relationship, Drug, Dose-Response Relationship, Radiation, Drug Synergism, Heterocyclic Compounds, 4 or More Rings, Humans, Light, Malonates, Neoplasm Proteins, Photochemotherapy, Radiation Tolerance, Treatment Outcome, Photosensitizing Agents, ATP-Binding Cassette Transporters, Cell Line, Tumor, Diketopiperazines, Triple Negative Breast Neoplasms

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