Selective cytotoxicity of intense nanosecond-duration electric pulses in mammalian cells.
Selective cytotoxicity of intense nanosecond-duration electric pulses in mammalian cells.
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DOI:
10.1016/j.bbagen.2010.07.008
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发表时间:
2010-11
影响因子:
3
通讯作者:
Pakhomova, Olga N.
中科院分区:
文献类型:
--
作者:
Ibey, Bennett L.;Pakhomov, Andrei G.;Gregory, Betsy W.;Khorokhorina, Vera A.;Roth, Caleb C.;Rassokhin, Mikhail A.;Bernhard, Joshua A.;Wilmink, Gerald J.;Pakhomova, Olga N.
关键词:
Nanosecond electric pulses (EP) disrupt cell membrane and organelles and cause cell death in a manner different from the conventional irreversible electroporation. We explored the cytotoxic effect of 10-ns EP (quantitation, mechanisms, efficiency, and specificity) in comparison with 300-ns, 1.8- and 9-μs EP. Effects in Jurkat and U937 cells were characterized by survival assays, DNA electrophoresis and flow cytometry. 10-ns EP caused apoptotic or necrotic death within 2–20 hrs. Survival (S, %) followed the absorbed dose (D, J/g) as: S=αD(−K), where coefficients K and α determined the slope and the “shoulder” of the survival curve. K was similar in all groups, whereas α was cell type- and pulse duration-dependent. Long pulses caused immediate propidium uptake and phosphatidylserine (PS) externalization, whereas 10-ns pulses caused PS externalization only. 1.8- and 9-μs EP cause cell death efficiently and indiscriminately (LD50 1–3 J/g in both cell lines); 10-ns EP are less efficient, but very selective (LD50 50–80 J/g for Jurkat and 400–500 J/g for U937); 300-ns EP show intermediate effects. Shorter EP open propidium-impermeable, small membrane pores (“nanopores”), triggering different cell death mechanisms. Nanosecond EP can selectively target certain cells in medical applications like tumor ablation.
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影响因子:
6.7
作者:
Formento Navarini, Andreia Lilian;Chiaradia, Louise Domeneghini;Creczynski-Pasa, Tania Beatriz
通讯作者:
Creczynski-Pasa, Tania Beatriz
DOI:
10.1083/jcb.200708010
发表时间:
2008-03-10
期刊:
The Journal of cell biology
影响因子:
--
作者:
Idone V;Tam C;Goss JW;Toomre D;Pypaert M;Andrews NW
通讯作者:
Andrews NW
影响因子:
4.2
作者:
Andre, F. M.;Gehl, J.;Mir, L. M.
通讯作者:
Mir, L. M.
影响因子:
15.3
作者:
Heinz, V;Alvarez, I;Knorr, D
通讯作者:
Knorr, D
影响因子:
3.4
作者:
Canatella, PJ;Karr, JF;Prausnitz, MR
通讯作者:
Prausnitz, MR