Modulation of Hypoxia-Induced Chemoresistance to Polymeric Micellar Cisplatin: The Effect of Ligand Modification of Micellar Carrier Versus Inhibition of the Mediators of Drug Resistance
| Autor: | Kamaljit Kaur, Ali Tavassoli, Hoda Soleymani Abyaneh, Amir Soleimani, Afsaneh Lavasanifar, Rania Soudy, F. Cuda, Mohammad Reza Vakili |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Combination therapy GE11 peptide EGFR-targeted therapy Pharmaceutical Science lcsh:RS1-441 cisplatin Micelle Article combination therapy lcsh:Pharmacy and materia medica STAT3 03 medical and health sciences 0302 clinical medicine medicine Epidermal growth factor receptor Cytotoxicity Triple-negative breast cancer Cisplatin pharmacological Inhibitors of HIF-1 and STAT3 biology Chemistry HIF-1 polymeric micelle 3. Good health 030104 developmental biology hypoxia-induced chemoresistance Cell culture 030220 oncology & carcinogenesis biology.protein Cancer research medicine.drug |
| Zdroj: | Pharmaceutics Pharmaceutics, Vol 10, Iss 4, p 196 (2018) Volume 10 Issue 4 |
| ISSN: | 1999-4923 |
| Popis: | Hypoxia can induce chemoresistance, which is a significant clinical obstacle in cancer therapy. Here, we assessed development of hypoxia-induced chemoresistance (HICR) against free versus polymeric cisplatin micelles in a triple negative breast cancer cell line, MDA-MB-231. We then explored two strategies for the modulation of HICR against cisplatin micelles: a) the development of actively targeted micelles and b) combination therapy with modulators of HICR in MDA-MB-231 cells. Actively targeted cisplatin micelles were prepared through surface modification of acetal-poly(ethylene oxide)-poly(&alpha carboxyl-&epsilon caprolactone) (acetal-PEO-PCCL) micelles with epidermal growth factor receptor (EGFR)-targeting peptide, GE11 (YHWYGYTPQNVI). Our results showed that hypoxia induced resistance against free and cisplatin micelles in MDA-MB-231 cells. A significant increase in micellar cisplatin uptake was observed in MDA-MB-231 cells that overexpress EGFR, following surface modification of micelles with GE11. This did not lead to increased cytotoxicity of micellar cisplatin, however. On the other hand, the addition of pharmacological inhibitors of key molecules involved in HICR in MDA-MB-231 cells, i.e., inhibitors of hypoxia inducing factor-1 (HIF-1) and signal transducer and activator of transcription 3 (STAT3), substantially enhanced the cytotoxicity of free and cisplatin micelles. The results indicated the potential benefit of combination therapy with HIF-1 and STAT3 inhibitors in overcoming HICR to free or micellar cisplatin. |
| Databáze: | OpenAIRE |
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