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SH003 reverses drug resistance by blocking signal transducer and activator of transcription 3 (STAT3) signaling in breast cancer cells
- Source :
- Bioscience Reports, BIOSCIENCE REPORTS(37)
- Publication Year :
- 2017
- Publisher :
- Portland Press Ltd., 2017.
-
Abstract
- Overcoming drug resistance is an important task for investigators and clinician to achieve successful chemotherapy in cancer patients. Drug resistance is caused by various factors, including the overexpression of P-glycoprotein (P-gp, MDR1). The development of new, useful compounds that overcome drug resistance is urgent. SH003 is extracted from the mixture of three different herbs, and its anticancer effect has been revealed in different cancer cell types. In the present study, we investigated whether SH003 is able to reverse drug resistance using paclitaxel-resistant breast cancer cells (MCF-7/PAC). In our experiments, SH003 significantly decreased cell growth and colony formation in MCF-7/PAC cells and parental MCF-7 cells. This growth inhibition was related to the accumulation of cells in the sub-G0/G1 apoptotic population and an increase in the number of apoptotic cells. SH003 reduced the mRNA expression of multidrug resistance 1 (MDR1) and multidrug resistance-associated proteins (MRPs) in MCF-7/PAC cells. SH003 also down-regulated the expression of P-gp. SH003 reversed drug efflux from MCF-7/PAC cells, resulting in rhodamine123 (Rho123) accumulation. Inhibition of drug resistance by SH003 is related to the suppression of the signal transducer and activator of transcription 3 (STAT3) signaling pathway. SH003 decreased STAT3 activation (p-STAT3) and its nuclear translocation and inhibited the secretion of VEGF and MMP-2, which are STAT3 target genes. An STAT3 inhibitor, JAK inhibitor I and an HIF-1α inhibitor decreased cell growth in MCF-7 and MCF-7/PAC cells. Taken together, these results demonstrate that SH003 can overcome drug resistance, and SH003 might be helpful for chemotherapy in cancer patients.
- Subjects :
- 0301 basic medicine
Apoptosis
Drug resistance
Pharmacology
Biochemistry
chemistry.chemical_compound
0302 clinical medicine
multi-drug resistance 1
STAT3
Research Articles
Tumor Stem Cell Assay
Angelica
education.field_of_study
biology
030220 oncology & carcinogenesis
signal transducer and activator of transcription 3
MCF-7 Cells
Female
Growth inhibition
Research Article
STAT3 Transcription Factor
ATP Binding Cassette Transporter, Subfamily B
Paclitaxel
Population
Biophysics
Antineoplastic Agents
Breast Neoplasms
Trichosanthes
03 medical and health sciences
breast cancer
medicine
Humans
education
Molecular Biology
Cell Proliferation
drug resistance
Plant Extracts
Cell growth
Cancer
Astragalus Plant
Cell Biology
medicine.disease
030104 developmental biology
chemistry
SH003
Drug Resistance, Neoplasm
Cancer cell
biology.protein
Subjects
Details
- ISSN :
- 15734935 and 01448463
- Volume :
- 37
- Database :
- OpenAIRE
- Journal :
- Bioscience Reports
- Accession number :
- edsair.doi.dedup.....3cdd90f14ac201b087f235eabce480bb
- Full Text :
- https://doi.org/10.1042/bsr20170125