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Raj G, Vasantha AP, Sreekumar VD, Beena AV, Dommeti VKK, Perozhy H, Jose AT, Khurana S, Varghese R. Bimetallic DNAsome Decorated with G 4-DNA as a Nanozyme for Targeted and Enhanced Chemo/Chemodynamic Cancer Therapy. Adv Healthc Mater 2024:e2400256. [PMID: 38669674 DOI: 10.1002/adhm.202400256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 04/23/2024] [Indexed: 04/28/2024]
Abstract
Cancer is indisputably one of the major threats to mankind, and hence the design of new approaches for the improvement of existing therapeutic strategies is always wanted. Herein, the design of a tumor microenvironment-responsive, DNA-based chemodynamic therapy (CDT) nanoagent with dual Fenton reaction centers for targeted cancer therapy is reported. Self-assembly of DNA amphiphile containing copper complex as the hydrophobic Fenton reaction center results in the formation of CDT-active DNAsome with Cu2+-based Fenton catalytic site as the hydrophobic core and hydrophilic ssDNA protrude on the surface. DNA-based surface addressability of the DNAsome is then used for the integration of second Fenton reaction center, which is a peroxidase-mimicking DNAzyme noncovalently loaded with Hemin and Doxorubicin, via DNA hybridization to give a CDT agent having dual Fenton reaction centers. Targeted internalization of the CDT nanoagent and selective generation of •OH inside HeLa cell are also shown. Excellent therapeutic efficiency is observed for the CDT nanoagent both in vitro and in vivo, and the enhanced efficacy is attributed to the combined and synergetic action of CDT and chemotherapy.
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Affiliation(s)
- Gowtham Raj
- School of Chemistry, Indian Institute of Science Education and Research (IISER) Thiruvananthapuram, Thiruvananthapuram, 695551, India
| | - Anu P Vasantha
- School of Biology, Indian Institute of Science Education and Research (IISER) Thiruvananthapuram, Thiruvananthapuram, 695551, India
| | - Vasudev D Sreekumar
- School of Chemistry, Indian Institute of Science Education and Research (IISER) Thiruvananthapuram, Thiruvananthapuram, 695551, India
| | - Athul V Beena
- School of Biology, Indian Institute of Science Education and Research (IISER) Thiruvananthapuram, Thiruvananthapuram, 695551, India
| | - Viswa Kalyan Kumar Dommeti
- School of Chemistry, Indian Institute of Science Education and Research (IISER) Thiruvananthapuram, Thiruvananthapuram, 695551, India
| | - Harsha Perozhy
- School of Chemistry, Indian Institute of Science Education and Research (IISER) Thiruvananthapuram, Thiruvananthapuram, 695551, India
| | - Alwin T Jose
- School of Chemistry, Indian Institute of Science Education and Research (IISER) Thiruvananthapuram, Thiruvananthapuram, 695551, India
| | - Satish Khurana
- School of Biology, Indian Institute of Science Education and Research (IISER) Thiruvananthapuram, Thiruvananthapuram, 695551, India
| | - Reji Varghese
- School of Chemistry, Indian Institute of Science Education and Research (IISER) Thiruvananthapuram, Thiruvananthapuram, 695551, India
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