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Rizzi M, Tonello S, Estevão BM, Gianotti E, Marchese L, Renò F. Verteporfin based silica nanoparticle for in vitro selective inhibition of human highly invasive melanoma cell proliferation. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 167:1-6. [PMID: 28039784 DOI: 10.1016/j.jphotobiol.2016.12.021] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 11/30/2016] [Accepted: 12/03/2016] [Indexed: 12/19/2022]
Abstract
Photodinamic therapy (PDT) has gained an increasing interest as a new tool to treat skin cancers such as melanoma. This clinical approach take advantage from the combination of a photosensitizer and a specific light wavelength able to induce singlet oxygen production. Mesoporous silica nanoparticles (MSNs) have been widely investigated as drug nanocarriers as their structure and morphology could be customized to produce suitable nanoplatforms enabling high cargo capacity. In the present study MSNs were successfully conjugated with the second generation photosensitizer verteporfin and the resulting nanoplatform (Ver-MSNs) was tested in an in vitro PDT model as a potential tool for melanoma treatment. Ver-MSNs based PDT did not affect cell proliferation of neither a normal human keratinocyte cell line (HaCaT) or a low mestastatic melanoma cell line (A375P). On the other hand Ver-MSNs based PDT deeply affect the highly invasive SK-MEL-28 melanoma cell line behavior, as testified by the strong reduction in cell proliferation along with the dramatic change in cellular morphology, through a nanoparticle internalization dependent mechanism. In fact, experiments performed in the presence of endocytosis inhibitors (chlorpromazine and amiloride) resulted in an attenuation of Ver-MSNs based PDT induced cell death, along with a recover in cellular morphology. MSN doped with verteporfin could thus represent a promising and useful tool for PDT treatment of highly invasive melanoma.
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Affiliation(s)
- Manuela Rizzi
- Innovative Research Laboratory for Wound Healing, Health Sciences Department, Università del Piemonte Orientale, via Solaroli, 17, 28100 Novara, Italy.
| | - Stelvio Tonello
- Innovative Research Laboratory for Wound Healing, Health Sciences Department, Università del Piemonte Orientale, via Solaroli, 17, 28100 Novara, Italy.
| | - Bianca Martins Estevão
- Dipartimento di Scienze e Innovazione Tecnologica e Centro Nano-SiSTeMI, Università del Piemonte Orientale, V. Teresa Michel 11, 15121 Alessandria, Italy; Nucleos Research of Photodynamic Therapy, Chemistry Department, State University of Maringá, Av. Colombo 5.790, 87020-900 Maringá, Paraná, Brazil.
| | - Enrica Gianotti
- Dipartimento di Scienze e Innovazione Tecnologica e Centro Nano-SiSTeMI, Università del Piemonte Orientale, V. Teresa Michel 11, 15121 Alessandria, Italy.
| | - Leonardo Marchese
- Dipartimento di Scienze e Innovazione Tecnologica e Centro Nano-SiSTeMI, Università del Piemonte Orientale, V. Teresa Michel 11, 15121 Alessandria, Italy.
| | - Filippo Renò
- Innovative Research Laboratory for Wound Healing, Health Sciences Department, Università del Piemonte Orientale, via Solaroli, 17, 28100 Novara, Italy.
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Formaldehyde solutions in simulated sweat increase human melanoma but not normal human keratinocyte cells proliferation. Toxicol In Vitro 2016; 37:106-112. [DOI: 10.1016/j.tiv.2016.09.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 08/02/2016] [Accepted: 09/09/2016] [Indexed: 12/30/2022]
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Menzdorf L, Weuster M, Klüter T, Brüggemann S, Behrendt P, Fitchen-Oestern S, Varoga D, Seekamp A, Purcz N, Glueer CC, Pufe T, Lippross S. Local pamidronate influences fracture healing in a rodent femur fracture model: an experimental study. BMC Musculoskelet Disord 2016; 17:255. [PMID: 27283180 PMCID: PMC4899908 DOI: 10.1186/s12891-016-1113-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Accepted: 06/02/2016] [Indexed: 11/17/2022] Open
Abstract
Background Bisphosphonates are a main component in the therapy of osteoporosis and other bone resorptive diseases. Previous studies have shown a positive effect of systemically applied bisphosphonates on fracture healing. Nevertheless high doses are related to side effects like osteonecrosis of the jaw, nephrotoxis and gastrointestinal symptoms. In this study we investigated the effect of locally applied pamidronate on fracture healing. Methods In a rodent model a simple femur fracture was set in female Wistar rats. We performed intramedullary fixation of the fracture and placed a collagen matrix around the fracture area. One group was treated with pamidronate, the other group with placebo via the matrix. To investigate the volume and quality of the callus we used micro-CT (μCT) and histology after 14 and 28 days. Results Our results show a positive influence of local applied pamidronate on callus volume. After 14 days an insignificant increase of callus volume in the treated animals was seen. 28 days after trauma the increase of callus volume in the treatment group was significantly higher in comparison to the control group. Osteonecrosis was not seen. Conclusions Locally applied bisphosphonates increase the callus volume in fracture healing.
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Affiliation(s)
- Leif Menzdorf
- Department of Trauma Surgery, University Medical Center of Schleswig-Holstein, Campus Kiel, Kiel, Germany.
| | - Matthias Weuster
- Department of Trauma Surgery, University Medical Center of Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Tim Klüter
- Department of Trauma Surgery, University Medical Center of Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Stefan Brüggemann
- Department of Trauma Surgery, University Medical Center of Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Peter Behrendt
- Department of Trauma Surgery, University Medical Center of Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Stefanie Fitchen-Oestern
- Department of Trauma Surgery, University Medical Center of Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Deike Varoga
- Department of Trauma Surgery, University Medical Center of Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Andreas Seekamp
- Department of Trauma Surgery, University Medical Center of Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Nicolai Purcz
- Department of Oral and Maxillofacial Surgery, University Medical Center of Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Claus C Glueer
- Section of Biomedical Imaging, Department of Radiology and Neuroradiology, University Medical Center of Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Thomas Pufe
- Department of Anatomy and Cell Biology, RWTH Aachen University, Aachen, Germany
| | - Sebastian Lippross
- Department of Trauma Surgery, University Medical Center of Schleswig-Holstein, Campus Kiel, Kiel, Germany
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