Electric pulses used in electrochemotherapy and electrogene therapy do not significantly change the expression profile of genes involved in the development of cancer in malignant melanoma cells
<p>Abstract</p> <p>Background</p> <p>Electroporation is a versatile method for <it>in vitro </it>or <it>in vivo </it>delivery of different molecules into cells. However, no study so far has analysed the effects of electric pulses used in electroc...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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BMC
2009-08-01
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| Series: | BMC Cancer |
| Online Access: | http://www.biomedcentral.com/1471-2407/9/299 |
| _version_ | 1818051387763720192 |
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| author | Glavac Damjan Cemazar Maja Todorovic Vesna Mlakar Vid Sersa Gregor |
| author_facet | Glavac Damjan Cemazar Maja Todorovic Vesna Mlakar Vid Sersa Gregor |
| author_sort | Glavac Damjan |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Background</p> <p>Electroporation is a versatile method for <it>in vitro </it>or <it>in vivo </it>delivery of different molecules into cells. However, no study so far has analysed the effects of electric pulses used in electrochemotherapy (ECT pulses) or electric pulses used in electrogene therapy (EGT pulses) on malignant cells. We studied the effect of ECT and EGT pulses on human malignant melanoma cells <it>in vitro </it>in order to understand and predict the possible effect of electric pulses on gene expression and their possible effect on cell behaviour.</p> <p>Methods</p> <p>We used microarrays with 2698 different oligonucleotides to obtain the expression profile of genes involved in apoptosis and cancer development in a malignant melanoma cell line (SK-MEL28) exposed to ECT pulses and EGT pulses.</p> <p>Results</p> <p>Cells exposed to ECT pulses showed a 68.8% average survival rate, while cells exposed to EGT pulses showed a 31.4% average survival rate. Only seven common genes were found differentially expressed in cells 16 h after exposure to ECT and EGT pulses. We found that ECT and EGT pulses induce an HSP70 stress response mechanism, repress histone protein H4, a major protein involved in chromatin assembly, and down-regulate components involved in protein synthesis.</p> <p>Conclusion</p> <p>Our results show that electroporation does not significantly change the expression profile of major tumour suppressor genes or oncogenes of the cell cycle. Moreover, electroporation also does not changes the expression of genes involved in the stability of DNA, supporting current evidence that electroporation is a safe method that does not promote tumorigenesis. However, in spite of being considered an isothermal method, it does to some extent induce stress, which resulted in the expression of the environmental stress response mechanism, HSP70.</p> |
| first_indexed | 2024-12-10T11:08:34Z |
| format | Article |
| id | doaj.art-3c42ee5c4a984b0494926d62a86696e1 |
| institution | Directory Open Access Journal |
| issn | 1471-2407 |
| language | English |
| last_indexed | 2024-12-10T11:08:34Z |
| publishDate | 2009-08-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Cancer |
| spelling | doaj.art-3c42ee5c4a984b0494926d62a86696e12022-12-22T01:51:30ZengBMCBMC Cancer1471-24072009-08-019129910.1186/1471-2407-9-299Electric pulses used in electrochemotherapy and electrogene therapy do not significantly change the expression profile of genes involved in the development of cancer in malignant melanoma cellsGlavac DamjanCemazar MajaTodorovic VesnaMlakar VidSersa Gregor<p>Abstract</p> <p>Background</p> <p>Electroporation is a versatile method for <it>in vitro </it>or <it>in vivo </it>delivery of different molecules into cells. However, no study so far has analysed the effects of electric pulses used in electrochemotherapy (ECT pulses) or electric pulses used in electrogene therapy (EGT pulses) on malignant cells. We studied the effect of ECT and EGT pulses on human malignant melanoma cells <it>in vitro </it>in order to understand and predict the possible effect of electric pulses on gene expression and their possible effect on cell behaviour.</p> <p>Methods</p> <p>We used microarrays with 2698 different oligonucleotides to obtain the expression profile of genes involved in apoptosis and cancer development in a malignant melanoma cell line (SK-MEL28) exposed to ECT pulses and EGT pulses.</p> <p>Results</p> <p>Cells exposed to ECT pulses showed a 68.8% average survival rate, while cells exposed to EGT pulses showed a 31.4% average survival rate. Only seven common genes were found differentially expressed in cells 16 h after exposure to ECT and EGT pulses. We found that ECT and EGT pulses induce an HSP70 stress response mechanism, repress histone protein H4, a major protein involved in chromatin assembly, and down-regulate components involved in protein synthesis.</p> <p>Conclusion</p> <p>Our results show that electroporation does not significantly change the expression profile of major tumour suppressor genes or oncogenes of the cell cycle. Moreover, electroporation also does not changes the expression of genes involved in the stability of DNA, supporting current evidence that electroporation is a safe method that does not promote tumorigenesis. However, in spite of being considered an isothermal method, it does to some extent induce stress, which resulted in the expression of the environmental stress response mechanism, HSP70.</p>http://www.biomedcentral.com/1471-2407/9/299 |
| spellingShingle | Glavac Damjan Cemazar Maja Todorovic Vesna Mlakar Vid Sersa Gregor Electric pulses used in electrochemotherapy and electrogene therapy do not significantly change the expression profile of genes involved in the development of cancer in malignant melanoma cells BMC Cancer |
| title | Electric pulses used in electrochemotherapy and electrogene therapy do not significantly change the expression profile of genes involved in the development of cancer in malignant melanoma cells |
| title_full | Electric pulses used in electrochemotherapy and electrogene therapy do not significantly change the expression profile of genes involved in the development of cancer in malignant melanoma cells |
| title_fullStr | Electric pulses used in electrochemotherapy and electrogene therapy do not significantly change the expression profile of genes involved in the development of cancer in malignant melanoma cells |
| title_full_unstemmed | Electric pulses used in electrochemotherapy and electrogene therapy do not significantly change the expression profile of genes involved in the development of cancer in malignant melanoma cells |
| title_short | Electric pulses used in electrochemotherapy and electrogene therapy do not significantly change the expression profile of genes involved in the development of cancer in malignant melanoma cells |
| title_sort | electric pulses used in electrochemotherapy and electrogene therapy do not significantly change the expression profile of genes involved in the development of cancer in malignant melanoma cells |
| url | http://www.biomedcentral.com/1471-2407/9/299 |
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