BIOSENSOR DEVICE AND METHOD OF SEQUENCING BIOLOGICAL PARTICLES

• US 20100273166A1
• Filed: 12/04/2008
• Published: 10/28/2010
• Est. Priority Date: 12/13/2007
• Status: Abandoned Application

• Current Assignee: NXP B.V. (NXP Semiconductors NV)
• Original Assignee: NXP B.V. (NXP Semiconductors NV)
• Inventors: Garcia Tello, Pablo
• Application Number:
  US12/747,796
• Publication Number:
  US 20100273166A1
• Time in Patent Office: Days
• US Class Current: 435/6
• CPC Class Codes: C12Q 1/6874 involving nucleic acid arrays, e.g. sequencing by hybridisation
• CPC Class Codes: C12Q 2535/101 Sanger sequencing method, i.e. oligonucleotide sequencing using primer elongation and dideoxynucleotides as chain terminators
• CPC Class Codes: C12Q 2565/537 characterised by the capture oligonucleotide acting as a primer
• CPC Class Codes: C12Q 2565/601 being a microscope, e.g. atomic force microscopy [AFM]
• CPC Class Codes: C12Q 2565/607 being a sensor, e.g. electrode

Abstract

A biosensor device (100) for sequencing biological particles (102), the biosensor device (100) comprising at least one substrate (104), a plurality of sensor active regions (106) provided on each of the at least one substrate (104) and each comprising a primer (108) having a sequence being complementary to a part of a sequence of the biological particles (102) and enabling generation of fragments having a sequence being inverse to a part of the sequence of the biological particles (102) at the primer (108), and a determination unit (114) adapted for individually determining a size of the fragments generated at the primer (108) of each of the plurality of sensor active regions (106), the fragment replication being terminated in the presence of replication terminating sequence units (116 to 119).

Claims

1. A biosensor device for sequencing biological particles, the biosensor device comprising

at least one substrate;

a plurality of sensor active regions provided on each of the at least one substrate and each of the sensor active regions comprising a primer having a sequence being complementary to a part of a sequence of the biological particles for enabling generation of fragments having a sequence being inverse to a part of the sequence of the biological particles at the primer;

a determination unit adapted for individually determining a size of the fragments replicated at the primer of each of the plurality of sensor active regions, the fragment generation being terminated in the presence of replication terminating sequence units.

2. The biosensor device of claim 1, wherein the determination unit is adapted for determining the sequence of the biological particles based on the individually determined size of the fragments considering information regarding an assigned type of replication terminating sequence units.

3. The biosensor device of claim 1, wherein the at least one substrate consists of exactly one substrate having delimited compartments, each of the delimited compartments comprising a plurality of the sensor active regions and being assigned to a type of the replication terminating sequence units.

4. The biosensor device of claim 1, wherein the at least one substrate comprises a plurality of separate substrates, each of the separate substrates comprising a plurality of the sensor active regions and being assigned to a type of the replication terminating sequence units.

5. The biosensor device of claim 1, wherein the plurality of sensor active regions comprise electrodes.

6. The biosensor device of claim 5, wherein an exposed surface of the electrodes has a dimension of less than about 300 nm.

7. The biosensor device of claim 5, wherein the electrodes comprise copper material.

8. The biosensor device of claim 5, wherein the electrodes form a capacitor structure arranged such that a capacitance value of the capacitor is influenced by a detection event in the corresponding sensor active region.

9. The biosensor device of claim 5, wherein the determination unit is adapted for evaluating electric signals received at the electrodes, the electrical signals being indicative of the assigned size of fragments.

10. The biosensor device of claim 1, wherein the plurality of sensor active regions comprise cantilever beams, being bendable in a characteristic manner based on the size of fragments.

11. The biosensor device of claim 10, wherein the determination unit is adapted for sampling a bending of the cantilever beams using an electromagnetic radiation beam, deflection of the electromagnetic radiation beam at the bendable cantilever beams being indicative of the assigned size of fragments.

12. The biosensor device of claim 1, wherein an exposed surface of the sensor active region has a dimension of at most 1.6 times, of a minimum lithographic feature size of a CMOS process applied for manufacturing the biosensor device.

13. The biosensor device of claim 1, comprising a switch transistor structure electrically coupled to the sensor active region.

14. The biosensor device according to claim 1, manufactured in CMOS technology or in MEMS technology.

15. The biosensor device according to claim 1, being monolithically integrated in a semiconductor substrate, comprising one of the group consisting of a group IV semiconductor, and a group III-group V semiconductor.

16. The biosensor device according to claim 1, wherein the primer is adapted for enabling generation of fragments having a sequence being inverse to a part of the sequence of the biological particles at the primer in the presence of sequence units of the sequence of the biological particles and in the presence of a replication enzyme.

19. The biosensor device of claim 3, wherein the at least one substrate consists of exactly one substrate having four delimited compartments.

20. The biosensor device of claim 4, wherein the plurality of separate substrates is four.

17. A method of sequencing biological particles, the method comprising

providing a plurality of sensor active regions on each of at least one substrate, each of the plurality of sensor active regions comprising a primer having a sequence being complementary to a part of a sequence of the biological particles and enabling generation of fragments having a sequence being inverse to a part of the sequence of the biological particles at the primer;

individually determining a size of fragments generated at the primer of each of the plurality of sensor active regions, the fragment replication being terminated in the presence of replication terminating sequence units.

18. The method according to claim 17, comprising determining the sequence of the biological particles based on the individually determined size of the fragments considering information regarding an assigned type of replication terminating sequence units.