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Berber MR, Elkhenany H, Hafez IH, El-Badawy A, Essawy M, El-Badri N. Efficient tailoring of platinum nanoparticles supported on multiwalled carbon nanotubes for cancer therapy. Nanomedicine (Lond) 2020; 15:793-808. [PMID: 32207376 DOI: 10.2217/nnm-2019-0445] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Aim: Therapeutically targeting cancer stem cells (CSCs), which play a role in tumor initiation and relapse, remains challenging. Materials & methods: Novel-formulated platinum nanoparticles (Pt-NPs) supported on polybenzimidazole (PBI)-functionalized polymers and multiwalled carbon nanotubes (MWCNT) were prepared and their effect on CSCs was evaluated. Results: Pt-NPs showed homogenous distribution on the surface of MWCNT/PBI composites, with very narrow particle size. MWCNT/PBI/Pt-NPs resulted in a dramatic decrease in the proliferation rate of CSCs but not bone marrow mesenchymal stem cells (BM-MSCs). Quantitative gene expression analysis revealed that MWCNT/PBI/Pt had a significant inhibitory effect on the epithelial-mesenchymal transition and cell cycle markers of CSCs. Conclusion: MWCNT/PBI/Pt exhibited a specific cytotoxic effect on breast CSCs but not on adult stem cells.
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Affiliation(s)
- Mohamed R Berber
- Center for Nanotechnology (CNT), Zewail City of Science & Technology, 6th October City, Giza, 12578, Egypt.,Department of Chemistry, Faculty of Science, Tanta University, Tanta, 31527, Egypt.,Department of Chemistry, College of Science, Jouf University, Sakaka, 2014, Saudi Arabia
| | - Hoda Elkhenany
- Center of Excellence for Stem Cells & Regenerative Medicine (CESC), Zewail City of Science & Technology, 6th October City, Giza, 12578, Egypt.,Department of Surgery, Faculty of Veterinary Medicine, Alexandria University, Alexandria, 21944, Egypt
| | - Inas H Hafez
- Center for Nanotechnology (CNT), Zewail City of Science & Technology, 6th October City, Giza, 12578, Egypt.,Department of Natural Resources & Agricultural Engineering, Faculty of Agriculture, Damanhour University, Damanhour, 22516, Egypt
| | - Ahmed El-Badawy
- Center of Excellence for Stem Cells & Regenerative Medicine (CESC), Zewail City of Science & Technology, 6th October City, Giza, 12578, Egypt
| | - Mohamed Essawy
- Center of Excellence for Stem Cells & Regenerative Medicine (CESC), Zewail City of Science & Technology, 6th October City, Giza, 12578, Egypt
| | - Nagwa El-Badri
- Center of Excellence for Stem Cells & Regenerative Medicine (CESC), Zewail City of Science & Technology, 6th October City, Giza, 12578, Egypt
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Kumar B. S, Sana B, Unnikrishnan G, Jana T, Kumar K. S. S. Polybenzimidazole co-polymers: their synthesis, morphology and high temperature fuel cell membrane properties. Polym Chem 2020. [DOI: 10.1039/c9py01403a] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polybenzimidazole (PBI) random co-polymers containing alicyclic and aromatic backbones were synthesized using two different dicarboxylic acids (viz., cyclohexane dicarboxylic acid and terephthalic acid) by varying their molar ratios.
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Affiliation(s)
- Satheesh Kumar B.
- Polymers and Special Chemicals Division
- Vikram Sarabhai Space Centre
- Thiruvananthapuram-22
- India
| | | | | | - Tushar Jana
- School of Chemistry
- University of Hyderabad
- Hyderabad
- India
| | - Santhosh Kumar K. S.
- Polymers and Special Chemicals Division
- Vikram Sarabhai Space Centre
- Thiruvananthapuram-22
- India
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