Apparatuses and methods for electroporation
Disclosed are apparatuses, systems, and methods for performing electroporation.
1. A method of electroporation, the method comprising:
cooling a plurality of cuvettes containing a solution and inserted into a cuvette holder that is positioned on a first surface of a plate by flowing a heat transfer fluid through a fluid flow path that is in thermal connection to the first surface, wherein a bottom of the cuvette holder is in thermal connection with the first surface and with a sidewall of the cuvette holder, and wherein the sidewall is in thermal connection with a portion of each cuvette, and
driving, after cooling the plurality of cuvettes to a first temperature, a current alternately to each cuvette by driving the current alternately to a plurality of second electrodes on the cuvette holder, wherein the second electrodes are electrically isolated from each other and from a first electrode on the cuvette holder that is electrically connected to a ground, wherein for each cuvette, the current flows through one of the second electrodes to a second portion of that cuvette, through the solution of that cuvette, and through a portion of that cuvette to the first electrode to the ground.
2. The method of claim 1 , wherein:
the plurality of cuvettes include N cuvettes,
a second portion of each cuvette is electrically coupled to one corresponding Nth second electrode, and
for each cuvette the current flows from the corresponding Nth second electrode through the second portion of that cuvette, through the solution of that cuvette, and through the portion of that cuvette to the first electrode to the ground.
3. The method of claim 1 , further comprising:
measuring a resistance between one second electrode and the first electrode.
4. The method of claim 3 , wherein the measuring the resistance includes applying a voltage across the one second electrode and the first electrode.
5. The method of claim 3 , further comprising:
adjusting, in response to the measured resistance and before driving the current to the one second electrode, one or more of the following: the solution in the cuvette electrically coupled with the one second electrode, the current to be applied to that cuvette, and a duration the current is to be applied to the one second electrode.
6. The method of claim 5 , wherein adjusting the solution in the cuvette electrically coupled with the one second electrode includes adding or removing a liquid or media in that cuvette.
7. The method of claim 5 , wherein the adjusting further includes replacing the cuvette electrically coupled with the one second electrode with another cuvette.
8. The method of claim 3 , further comprising:
driving, after driving the current to the one second electrode and after measuring the resistance between the one second electrode and the first electrode, the current again to the second electrode.
9. The method of claim 3 , further comprising:
adjusting, in response to the measured resistance and after driving the current to the one second electrode, one or more of the following: the solution in that cuvette, the current to be applied to that cuvette, and a duration the current is to be applied to that cuvette; and
driving, according to the adjusting, a second current to the second electrode.
10. The method of claim 3 , wherein the measuring the resistance includes measuring the resistance of the solution in the cuvette electrically coupled with the one second electrode.
11. The method of claim 3 , further comprising:
storing the measured resistance in a memory.
12. The method of claim 1 , wherein the driving the current alternately to each cuvette further includes:
driving the current to one second electrode a first duration, and
driving the current to another second electrode for a second duration different than the first duration.
13. The method of claim 12 , wherein first duration and the second duration are between about 1.5 milliseconds and about 4 milliseconds.
14. The method of claim 1 , wherein the driving the current alternately to each cuvette further includes:
driving the current to one second electrode at a first voltage, and
driving the current to another second electrode at a second voltage different than the first voltage.
15. The method of claim 14 , wherein first voltage and the second voltage are between about 0.20 kilovolts and about 3 kilovolts.
16. The method of claim 1 , wherein the driving the current alternately to each cuvette further includes driving the current to each second electrode while not driving a current to each of the other second electrodes.
17. The method of claim 1 , wherein:
the cuvette holder further includes a non-electrically conductive part, and
the plurality of second electrodes are connected to the non-electrically conductive part.
18. The method of claim 17 , wherein the non-electrically conductive part comprises a thermoplastic or a ceramic.
19. The method of claim 1 , wherein a sidewall of the cuvette holder is electrically conductive and is the first electrode.
20. The method of claim 1 , further comprising:
positioning, after driving the current alternately to the plurality of cuvettes, the cuvette holder on a second surface of a second plate, and
heating, after positioning the cuvette holder on the second surface of the second plate, the plurality of cuvettes inserted into the cuvette holder by flowing a heat transfer fluid through a second fluid flow path that is in thermal connection to the second surface, wherein the bottom of the cuvette holder is in thermal connection with the second surface and with the sidewall of the cuvette holder, and wherein the sidewall is in thermal connection with the portion of each cuvette.