METHOD AND APPARATUS FOR MOVING STAGE DETECTION OF SINGLE MOLECULAR EVENTS

• US 20080241951A1
• Filed: 07/20/2007
• Published: 10/02/2008
• Est. Priority Date: 07/20/2006
• Status: Abandoned Application

• Current Assignee: Life Technologies Corporation (Thermo Fisher Scientific Incorporated)
• Original Assignee: VisiGen Biotechnologies, Inc. (Thermo Fisher Scientific Incorporated)
• Inventors: Hardin, Susan H., Battulga, Nasanshargal, Reddy, Mitsu
• Application Number:
  US11/781,166
• Publication Number:
  US 20080241951A1
• Time in Patent Office: Days
• US Class Current: 436/164
• CPC Class Codes: B82Y 30/00 Nanotechnology for materials or surface science, e.g. nanocomposites
• CPC Class Codes: G01N 2035/00158 Elements containing microarrays, i.e. "biochip"
• CPC Class Codes: G01N 21/648 using evanescent coupling or surface plasmon coupling for the excitation of fluorescence
• CPC Class Codes: G01N 35/028 having reaction cells in the form of microtitration plates

Abstract

An apparatus and method based on the apparatus is disclosed for detecting and monitoring chemical and/or bio-chemical reactions or interactions at the single molecule level, where detection and monitoring is improved by moving the viewing field of the detector in a controlled manner. The motion of the moving frame is accomplished either through software in the detector system or is accomplished by moving the reacting system. The motion is controlled and is either linear, circular or elliptical. The motion provides for improved site identification or mapping, improved event detection and monitoring, improved signal recognition and improved noise reduction.

Claims

1. An apparatus for analyzing small, medium or large ensembles of reactive sites or a single reactive site, comprising:

a substrate including a zone,

a component delivery assembly adapted to delivery one or a plurality of components into or onto the zone to form reactive sites, where each reactive site includes at least one detectable agent, each detectable agent having a detectable property,

a detection system including a detector and a light source assembly, where the light source assembly is adapted to focus an incident light beam onto a viewing field of the detector and the detector is capable of detecting the detectable properties or changes in the detectable properties evidencing events occurring within the viewing field, and

a means for moving the field in a controlled manner, while detecting the events occurring within the viewing field,

an analyzer capable of converting the events detected by the detector into data relating to the detected events,

where the controlled motion of the viewing field is adapted to improve detection, to improve signal recognition, to improve signal-to-noise ratio and/or to improve noise reduction associated with the reactions or interactions occurring at the reactive sites with the viewing field.

2. The apparatus of claim 1, wherein the zone comprises cavities, channels or other confinement volumes.

3. The apparatus of claim 1, wherein the viewing field comprises the entire zone or a portion thereof.

4. The apparatus of claim 1, wherein the zones further include binding agents complexed to, non-covalently bonded to or covalently bonded to a surface of the zone or complexed to, non-covalently bonded to or covalently bonded to a matrix disposed in the zone, where the binding agents are adapted to immobilize a component of the reactive sites.

5. The apparatus of claim 1, wherein the detectable agents produce detectable signals evidencing one or a series of reactions and/or interactions occurring at the reactive sites.

6. The apparatus of claim 1, wherein the sites comprise atomic systems, molecules, molecular complexes or molecular assemblages, where the detectable agents are associated with one or more of the components of the reactive sites or the zone.

7. The apparatus of claim 1, wherein the detector is capable of detecting the detectable properties of all of the detectable agents.

8. The apparatus of claim 1, wherein the active sites are sequencing sites comprising a polymerizing agent, a primer/template duplex and dNTPs for the polymerizing agent.

9. The apparatus of claim 8, wherein the each dNTPs includes a detectable agent comprising a fluorescent dye of a different color and the detector is capable of detecting all four dNTP colors and optionally a donor color simultaneously.

10. The apparatus of claim 9, wherein the detector includes a single detector or a plurality of detectors, where the plurality is between 2 and 5.

11. The apparatus of claim 10, wherein the detectors are digital imaging devices.

12. The apparatus of claim 10, wherein the detectors are CCD cameras.

13. The apparatus of claim 8, wherein the primer is immobilized in or on the zone or in or on a matrix disposed on the zone.

14. The apparatus of claim 8, wherein the template is immobilized in or on the zone or in or on a matrix disposed on the zone.

15. The apparatus of claim 8, wherein the polymerizing agent is immobilized in or on the zone or in or on a matrix disposed on the zone.

16. The apparatus of claim 1, wherein the means comprises a motor assembly associated with the light source assembly, where the motor assembly moves the light source assembly in the controlled manner.

17. The apparatus of claim 1, wherein the means comprises a motor assembly associated with the substrate, where the motor assembly moves the substrate in the controlled manner.

19. The apparatus of claim 10, further comprising

a means for moving the field in a controlled manner, while detecting the events occurring within the viewing field,

where the controlled motion of the viewing field is adapted to improve detection, to improve signal recognition, to improve signal-to-noise ratio and/or to improve noise reduction associated with the reactions or interactions occurring at the reactive sites with the viewing field.

18. An apparatus for analyzing small, medium or large ensembles of reactive sites or a single reactive site, comprising:

a substrate including a zone including one donor structure or a sparsely distributed plurality of donor structures formed there on, immobilized thereon, formed in or on a matrix disposed on or in the zone or immobilized in or one a matrix disposed on or in the zone,

a component delivery assembly adapted to delivery one or a plurality of components into or onto the zone to form reactive sites, where each reactive site includes at least one detectable agent, each detectable agent having a detectable property, and

a detection system including a detector, where the detector is capable of detecting the detectable properties or changes in the detectable properties evidencing events occurring within a detector viewing field, and

an analyzer capable of converting the events detected by the detector into data relating to the detected events,

where the donor structures improves detection, signal recognition, signal-to-noise ratio and/or noise reduction associated with the reactions or interactions occurring at the reactive sites with the viewing field.

20. A method for analyzing one or an ensemble of active sites comprising the steps of:

providing a substrate including a zone, where the zone includes one or a plurality of sparsely distributed atomic system, molecular, molecular complex or molecular assemblage sites, each site including at least one detectable agent having a detectable property, where the agents and the properties are the same or different,

detecting, with a detection system, reactions and/or interactions occurring at the sites within a viewing field of a detector of the detection system to produce detected event signals,

while detecting, moving the viewing field in a controlled manner, where the motion is adapted to improve location of active sites, improve signal recognition, improve noise identification and reduction, and/or improve signal-to-noise ratio of detected, and

analyzing the detected event signals to convert the signals into data about the detected events.

21. The method of claim 20, wherein the method is performed in a continuous reaction mode, an intermittent reaction mode, a periodic reaction mode, semi-periodic reaction mode, or mixed mode (a mixture of one or more of the other modes in any combination or permutation).

22. The method of claim 20, wherein the sites are confined on or in the zone or immobilized to binding agents sparsely distributed on or in the zone.

23. The method of claim 20, wherein the providing step comprises:

first forming one or a plurality of pre-active sites on or on the zone,

mapping the pre-active sites within the viewing field prior, and

activating the pre-active sites to form the active sites.

24. The method claim 20, wherein moving step comprises moving the substrate via a substrate motor in the controlled manner, moving the light source via a light source motor in the controlled manner or moving the detector via a detector motor in a controlled manner.

25. The method of claim 20, wherein the motion comprises controlled trajectory.

26. The method of claim 25, wherein the controlled trajectory includes control of direction, speed, linear acceleration, angular acceleration, and/or a combination of these components of motion.

27. The method of claim 25, wherein the controlled trajectory is selected from the group consisting of a linear trajectory, circular trajectory, elliptical trajectory, hyperbolic trajectory, rectangular trajectory, triangular trajectory, back-and-forth trajectory, side-to-side trajectory, or any other trajectory that permits the detectable molecules, complexes or assemblages to move within the viewing field.

28. The method of claim 20, wherein the reactions and/or interactions are evidenced by a change in at least one of the detectable properties of one or more of the detectable agents before, during and/or after one or each of a series of the reactions and/or interactions,

29. A method for analyzing one or an ensemble of active sites comprising the steps of:

providing a substrate including a zone, where the zone includes one or a plurality of sparsely distributed donor structure sites, each donor site capable of transferring energy to an acceptor converting the acceptor into a detectable agent, where each donor structure site includes a binding agent adapted to immobilize a molecule, at least one component of an atomic system, at least one component of a molecular complex or at least one component of a molecular assemblage molecule,

introducing a molecule, at least one component of an atomic system, at least one component of a molecular complex or at least one component of a molecular assemblage molecule to the substrate to convert some or all of the donor sites into immobilized molecular, atomic, molecular complex and molecular assemblage sites,

detecting, with a detection system, reactions and/or interactions occurring at the sites within a viewing field of a detector of the detection system to produce detected event signals, and

analyzing the detected event signals to convert the signals into data about the detected events.