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Projects / Programmes source: ARIS

Development and evaluation of new approaches to cancer treatment

Periods
Research activity

Code Science Field Subfield
3.04.00  Medical sciences  Oncology   

Code Science Field
B520  Biomedical sciences  General pathology, pathological anatomy 
Keywords
electrochemotherapy, electrogenetherapy, radiobiology, radiophysics, tumor physiology, immunohistochemistry
Evaluation (rules)
source: COBISS
Researchers (17)
no. Code Name and surname Research area Role Period No. of publicationsNo. of publications
1.  11308  PhD Andrej Cör  Oncology  Researcher  2004 - 2008  409 
2.  14575  PhD Maja Čemažar  Oncology  Researcher  2004 - 2008  1,425 
3.  20388  PhD Janez Dolenšek  Public health (occupational safety)  Researcher  2008  120 
4.  13784  PhD Branko Ermenc  Stomatology  Researcher  2004  85 
5.  18266  Nada Godnič    Technical associate  2004 - 2008 
6.  15575  PhD Daša Grabec  Oncology  Researcher  2004 - 2008  54 
7.  21329  PhD Alenka Grošel  Oncology  Researcher  2004 - 2008  77 
8.  19058  PhD Simona Kranjc Brezar  Medical sciences  Researcher  2004 - 2008  315 
9.  17477  Mira Lavrič    Technical associate  2004 - 2008 
10.  12888  PhD Mateja Legan  Metabolic and hormonal disorders  Researcher  2004 - 2008  84 
11.  18267  Andreja Lesar    Technical associate  2004 - 2007 
12.  08750  PhD Zvonimir Rudolf  Oncology  Researcher  2004 - 2008  258 
13.  17482  Boris Sekereš    Technical associate  2004 - 2008 
14.  08800  PhD Gregor Serša  Oncology  Head  2004 - 2008  1,511 
15.  23985  Breda Slekovec Kolar    Technical associate  2004 - 2008 
16.  07798  PhD Draga Štiblar Martinčič  Oncology  Researcher  2004 - 2008  161 
17.  18264  Emica Žagar    Technical associate  2005 - 2007 
Organisations (2)
no. Code Research organisation City Registration number No. of publicationsNo. of publications
1.  0302  Institute of Oncology Ljubljana  Ljubljana  5055733000  15,447 
2.  0381  University of Ljubljana, Faculty of Medicine  Ljubljana  1627066  48,195 
Abstract
We are facing quick developments in cancer treatment. In the last decade, a vast amount of knowledge has been accumulated on the initiation and promotion of cancer cells as well as on how cancer cells control their environment and what are the interactions between the host and the tumor. This basic knowledge about cancer cells enables us to treat cancer. Without the knowledge about specific properties of cancer cells it would not be possible to develop new treatments because effectiveness of treatment rests on subtle differences between normal and cancer cells. In order to introduce new treatments into every day clinical practice, we need a swift translation of knowledge from basic sciences into clinics. However, before clinical testing, it is mandatory to develop and evaluate new treatments in experimental oncology, whose main goals are to develop, either on cells in vitro and tumors in vivo on experimental animals, new treatments, discover their mechanisms of action, evaluate their effectiveness, and verify whether they are suitable for treating cancer patients with cancer. Our research program can be divided into several fields of interest that are interrelated in many aspects. Electroporation is a physical method for delivering molecules into cells. It is also applied to deliver chemotherapeutics - electrochemotherapy, or naked DNA - electrogenetherapy. The aims of our research program are to apply electrochemotherapy in the treatment of cancer patients with cutaneous and subcutaneous tumors and to optimize electrogenetherapy to enter the first clinical trials. The effectiveness of radiation therapy can be potentiated by radiosensibilization, either with radiosensitizing drugs or gene therapy. Therefore, another goal is to search for some applications of electrochemotherapy and electrogenetherapy in combination with radiation therapy. Furthermore, we will apply some new radiation techniques, like three dimensional conformal radiation and intensity modulated radiotherapy (IMRT), and stereotactic radiosurgery. We will try to test their efficacy from physical and biological aspects. The knowledge about physiological parameters of the tumors is important for the prediction and for follow-up of the new treatments. Different techniques of tumor blood flow and oxygenation will be performed after the treatment with standard and newly developed approaches. Immunohistochemical staining enables the detection of specific molecules in the cells that are essential for the knowledge about biological behaviour of cancer cells. Nowadays, COX-2 and its inhibitors are very hot topics that will also be investigated in our research program. This research program is complex, it is multidisciplinary and enables translational research in the described specific fields from preclinical testing into clinical practice.
Significance for science
The research program is devoted to development and translation of biomedical applications of electroporation in biomedicine and in treatment of cancer. Electroporation is used as a delivery system for various molecules in cells and tissues, including tumors. Electrochemotherapy enables enhanced drug delivery of bleomycin or cisplatin for an enhanced chemotherapeutic effect on localized tumors. Electrogene therapy also utilizes electroporation for plasmid DNA encoding reporter or therapeutic genes delivery into cells and tissues. In these two areas of research the research group has achieved exellent results and published the results in internationally renowned journals. Therefore, our research group is internationally recognized as one of the leading groups in this research area. Our main contributions in the development of the research field were: - Translation of electrochemotherapy into the treatment of melanoma metastases in human medicine. - Translation of electrochemotherapy into the treatment of primary tumors of small animals. - Basic resarch of electrogene therapy: evaluation of histological properties of tumors for effective eletrotransfection, the use of RNAi in treatment of colorectal cancer bearing K-ras mutation, evaluation of systemic gene therapy with IL-12 in treatment of tumors and metastases, development of plasmids encoding reporter and therapeutic genes under control of radioinducible promoters. - Basic research on the effect of electroporation and electrochemotherapy on tumor vasculature, evidence of vascular disrupting effects.
Significance for the country
Translational research has a great impact for development of new therapeutic approaches in oncology. The results of the program belong to translational reseach; electrochemoterapy is a treatment approach that has an impact on quality of life and also has an organ sparing effect. The research has contributed to technological development in cancer treatment. Electrochemotherapy is sometimes a treatment of choice, in other cases an alternative treatment to other treatment modalities, like surgery and radiotherapy. Electrochemotherapy, which has been developed in this program, is a recognized treatment and is in the doctrine for treatment of skin metastases of melanoma and is covered by the health insurance of the Republic of Slovenia.
Most important scientific results Final report, complete report on dLib.si
Most important socioeconomically and culturally relevant results Final report, complete report on dLib.si
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