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Highly specific in vivo gene delivery for p53-mediated apoptosis and genetic photodynamic therapies of tumour. Nat Commun 2015; 6:6456. [PMID: 25739372 PMCID: PMC4366491 DOI: 10.1038/ncomms7456] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Accepted: 01/29/2015] [Indexed: 12/14/2022] Open
Abstract
Anticancer therapies are often compromised by nonspecific effects and challenged by tumour environments’ inherent physicochemical and biological characteristics. Often, therapeutic effect can be increased by addressing multiple parameters simultaneously. Here we report on exploiting extravasation due to inherent vascular leakiness for the delivery of a pH-sensitive polymer carrier. Tumours’ acidic microenvironment instigates a charge reversal that promotes cellular internalization where endosomes destabilize and gene delivery is achieved. We assess our carrier with an aggressive non-small cell lung carcinoma (NSCLC) in vivo model and achieve >30% transfection efficiency via systemic delivery. Rejuvenation of the p53 apoptotic pathway as well as expression of KillerRed protein for sensitization in photodynamic therapy (PDT) is accomplished. A single administration greatly suppresses tumour growth and extends median animal survival from 28 days in control subjects to 68 days. The carrier has capacity for multiple payloads for greater therapeutic response where inter-individual variability can compromise efficacy. Alterations of p53 are associated with more than half of all human cancers. Here the authors present a new pH-sensitive nanoparticle that is delivered via systemic circulation and combines gene delivery to restore p53 with expression of Killerred protein to induce photosensitization.
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Chronic hepatitis C virus infection triggers spontaneous differential expression of biosignatures associated with T cell exhaustion and apoptosis signaling in peripheral blood mononucleocytes. Apoptosis 2015; 20:466-80. [DOI: 10.1007/s10495-014-1084-y] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Nenu I, Popescu T, Aldea MD, Craciun L, Olteanu D, Tatomir C, Bolfa P, Ion RM, Muresan A, Filip AG. Metformin associated with photodynamic therapy--a novel oncological direction. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2014; 138:80-91. [PMID: 24911275 DOI: 10.1016/j.jphotobiol.2014.04.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Revised: 04/15/2014] [Accepted: 04/28/2014] [Indexed: 12/31/2022]
Abstract
The aim of our study was to assess the effect of the combined treatment of Metformin (Metf) and 5, 10, 15, 20-tetra-sulfophenyl-porphyrin (TSPP)-mediated photodynamic therapy (PDT) on an in vivo tumour model. Wistar male rats were divided in 6 groups: group 1, treated with TSPP; groups 2 and 4 treated with TSPP and Metf, respectively, and irradiated 24h thereafter; group 3 was treated with Metf and the last two groups received the combined treatment, Metf administered prior (group 5) or after (group 6) irradiation. 72 h from the start of the treatment, tumour tissue was sampled for the investigation of oxidative and nitrosative stress. The apoptotic rate, inducible nitric oxide synthase (iNOS) and cyclooxygenase (COX)-2 expressions and matrix metalloproteinases activities were also quantified. Malondialdehyde and glutathione levels were significantly elevated in the groups treated with combined therapy (p<0.05). Metf associated with TSPP-PDT reduced iNOS and COX-2 expressions and enhanced nitrotyrosine levels in both therapeutic regimens. Peroxynitrate formation and its cytotoxic effect on tumour cells were related to an elevated index of apoptosis and necrosis. Moreover, MMP-2 activity reached a minimum in the groups which received combined therapy. Our results confirmed that the association of Metf with PDT might prove a new and promising oncological approach.
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Affiliation(s)
- Iuliana Nenu
- Department of Physiology, "Iuliu Hatieganu" University of Medicine and Pharmacy, 1 Clinicilor Street, 400006 Cluj-Napoca, Romania
| | - Tiberiu Popescu
- Department of Physiology, "Iuliu Hatieganu" University of Medicine and Pharmacy, 1 Clinicilor Street, 400006 Cluj-Napoca, Romania
| | - Mihaela D Aldea
- Department of Physiology, "Iuliu Hatieganu" University of Medicine and Pharmacy, 1 Clinicilor Street, 400006 Cluj-Napoca, Romania
| | - Lucian Craciun
- Department of Physiology, "Iuliu Hatieganu" University of Medicine and Pharmacy, 1 Clinicilor Street, 400006 Cluj-Napoca, Romania
| | - Diana Olteanu
- Department of Physiology, "Iuliu Hatieganu" University of Medicine and Pharmacy, 1 Clinicilor Street, 400006 Cluj-Napoca, Romania
| | - Corina Tatomir
- Departments of Radiobiology and Tumor Biology, Oncology Institute "Prof. I. Chiricuta", 34-36 Republicii Street, 400015 Cluj-Napoca, Romania
| | - Pompei Bolfa
- Department of Pathology, Cluj-Napoca, University of Agricultural Sciences and Veterinary Medicine, 3-5 Calea Manastur, 400372 Cluj-Napoca, Romania; Department of Biomedical Sciences, Ross University School of Veterinary Medicine Basseterre, PO Box 334, Saint Kitts and Nevis
| | - Rodica M Ion
- National Research & Development Institute for Chemistry and Petrochemistry ICECHIM 202 Splaiul Independentei, 060021 Bucharest, Romania
| | - Adriana Muresan
- Department of Physiology, "Iuliu Hatieganu" University of Medicine and Pharmacy, 1 Clinicilor Street, 400006 Cluj-Napoca, Romania
| | - Adriana G Filip
- Department of Physiology, "Iuliu Hatieganu" University of Medicine and Pharmacy, 1 Clinicilor Street, 400006 Cluj-Napoca, Romania.
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Liu L, Song Y, Ma L, Zang L, Tao L, Zhang Z, Han J. Growth inhibition effect of HMME-mediated PDT on hepatocellular carcinoma HepG2 cells. Lasers Med Sci 2014; 29:1715-22. [DOI: 10.1007/s10103-014-1583-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2014] [Accepted: 04/15/2014] [Indexed: 01/07/2023]
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Ebrahim M, Bagheri V, Arababadi MK. Potential roles played by IL-6 in hepatitis B infection. Future Virol 2014. [DOI: 10.2217/fvl.14.21] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
ABSTRACT: Hepatitis B is a main disorder of the liver, which is induced by HBV. Hepatitis B can induce liver diseases, such as inflammation, cirrhosis and hepatocellular carcinoma (HCC). Recent studies demonstrated that several patients are unable to eradicate the virus from hepatocytes and develop chronic hepatitis B infections. The main mechanisms responsible for development of chronic hepatitis B and its related cirrhosis as well as HCC are yet to be identified. IL-6 is a proinflammatory cytokine that participates in stimulation of immune responses against viral infections. In addition, it has been documented that IL-6 can play key roles in induction of fibrosis and cancers. Therefore, the aim of this article is to clarify the main roles of IL-6 in stimulation of appropriate immune responses against hepatitis B virus and induction of hepatitis B-dependent cirrhosis as well as HCC.
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Affiliation(s)
- Maryam Ebrahim
- Immunology of Infectious Diseases Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - Vahid Bagheri
- Immunology of Infectious Diseases Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - Mohammad Kazemi Arababadi
- Immunology of Infectious Diseases Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
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