Molecular analysis system and use thereof
A molecular testing device comprises a heating and cooling module having a thin-film thermoelectric heating and cooling device, and a removable test module having a combined amplification and hybridization reaction chamber. The reaction chamber comprises a thermo-conductive exterior surface and a microarray on an interior surface. The thin-film thermoelectric heating and cooling device has a heat transfer surface that is adapted to make contact with the thermo-conductive exterior surface of the reaction chamber. The molecular testing device may be used to perform a PCR in the reaction chamber.
1. A device for performing a polymerase chain reaction (PCR), comprising:
a heating and cooling module comprising a thermoelectric heating and cooling device comprising a heat transfer surface;
a holder for receiving a removable test module comprising a reaction chamber having a therm-conductive exterior surface, an exterior bottom surface and a microarray on an interior surface, wherein the microarray is an ordered array of spots presented for binding to ligands of interest, wherein said thermoelectric heating and cooling device heats and cools depending on the direction of an electrical current said reaction chamber by contacting said heat transfer surface with said thereto-conductive top exterior surface of said reaction chamber, and wherein said holder comprises a thermal insulation layer to insulate said exterior bottom surface of said reaction chamber;
a moving system that brings said heat transfer surface in contact with said thermo-conductive exterior surface when said test module is placed in said holder, wherein said heat transfer surface undergoes thermal cycling during said PCR; and
a programmable control module configured to control the direction of an electrical current flowing through said thermoelectric heating and cooling device to control the heating and cooling of said thermoelectric heating and cooling device.
2. The device of claim 1 , wherein said thermoelectric device is a Peltier device.
3. The device of claim 1 , wherein said thermoelectric heating and cooling device comprises a semiconductor and a heat sink.
4. The device of claim 1 , wherein said heating and cooling module further comprises a temperature sensor.
5. The device of claim 4 , wherein said temperature sensor comprises a thermistor or resistance thermal device.
6. The device of claim 1 , wherein said heating and cooling module comprises a plurality of thermoelectric heating and cooling devices each comprising a heat transfer surface, wherein said removable test module comprises a plurality of reaction chambers each having a thermo-conductive exterior surface, wherein said programmable control module is capable of regulating temperature of each of said heat transfer surface individually in order to perform PCR under different conditions in each reaction chamber.