IP Library › Granted Patent US 12,292,406
Granted Patent B2
US 12,292,406 · App. 17/632,613 · Granted May 6, 2025

Device for detecting analytes in a sample, and methods of use thereof

Inventors: Shofarul Wustoni (Thuwal, SA); Sahika Inal (Thuwal, SA)
Assignee: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY
G01N27/4145G01N27/31G01N27/327G01N27/3335G01N27/44726
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Quick Facts
Patent No.
US 12,292,406
App. No.
17/632,613
Granted
May 6, 2025
Kind
B2
Abstract

Devices for detecting an analyte in a sample suspected of containing the analyte, are provided. The devices include bio-functional, nanostructured, isoporous membranes (BNIM) integrated organic electrochemical transistor (OECT), herein BNIM-OECT, for the rapid and sensitive detection of the presence of an analyte of interest, in a sample, for example, a biological sample. The membrane (i.e., BNIM) is physically separated from the OECT channel therefore the electronic device can be used multiple times. The isoporous membrane is functionalized to include a binding partner for the analyte being detected. The BNIM-OECT can be used for disease detection, by functionalizing the BNIM-OECT with a binding partner to an analyte associated with the disease, applying a collected biological sample to the BNIM-OECT. A decrease in channel current as a result of analyte binding to its binding partner on the isoporous membrane indicates the presence of the analyte in the sample.

Claims (33)

1. A device for detecting an analyte in a sample suspected of containing the analyte, comprising:

(a) a bio-functional nanostructured isoporous membranes (BNIM), and

(b) an organic electrochemical transistor (OECT),

wherein the OECT comprises:

(i) a source electrode,

(ii) a drain electrode,

(iii) a channel, and

(iv) a gate electrode,

wherein the BNIM comprises a binding partner specific for the analyte and an isoporous surface further comprising a pore size distribution,

wherein the source and drain electrodes are electrically connected by the channel, and

wherein the BNIM is placed above the channel and in contact with the source and drain electrodes.

2. The device of claim 1 , further comprising a supporting substrate, wherein the source electrode, the drain electrode, and the channel are patterned on the supporting substrate.

3. The device of claim 2 , wherein the supporting substrate is selected from the group consisting of glass, silicon, paper, coated paper, resin-coated paper, paper laminates, paperboard, and corrugated board.

4. The device of claim 1 , wherein the channel is made from a conducting polymer.

5. The device of claim 4 , wherein the conducting polymer is selected from the group consisting of PEDOT:PSS, PEDOT-S, PEDOT:TOS, PEDOTOH:C10 4 , PEDOT-co-PEDOTOH:C10 4 , P3HT, PTHS, BBL, p(g2T-TT), PTHS -TMA + -co-P3HT, p(gNDI-g2T), p(gOT2-g6T2), and P-90.

6. The device of claim 1 , wherein the BNIM is made from a block copolymer poly (styrene-b-4-vinylpyridine).

7. The device of claim 1 , wherein the binding partner specific for the analyte is smaller in size compared to the pore size distribution of the isoporous surface of the BNIM.

8. The device of claim 1 , wherein the binding partner specific for the analyte comprises Congo Red or Thioflavin T.

9. The device of claim 1 , wherein the binding partner specific for the analyte comprises an aptamer, optionally a peptide aptamer.

10. The device of claim 1 , wherein the binding partner specific for the analyte is crosslinked to the isoporous surface of the BNIM.

11. The device of claim 1 , wherein the gate electrode is not on contact with the source or drain electrodes.

12. A method of detecting the presence of an analyte in a sample comprising:

(i) contacting an electrolyte solution of the sample with the device of claim 1 ,

(ii) applying a drain voltage and a gate voltage, and

(iii) measuring a drain current, a transconductance, and/or a response time,

wherein a decrease in the drain current, a decrease in the transconductance, and/or an increased in the response time compared to those measured without the analyte indicates the presence of the analyte in the sample.

13. The method of claim 12 , wherein the sample is a biological sample.

14. The method of claim 13 , wherein the biological sample is selected from the group consisting of blood, serum, cerebrospinal fluid, and saliva.

15. The method of claim 12 , wherein the BNIM of the device is interposed vertically, between the channel and the electrolyte solution.

16. The method of claim 12 , wherein the binding partner specific for the analyte comprises Congo Red.

17. The method of claim 12 , wherein the sample comprises or is suspected of comprising amyloid beta aggregates.

18. The method of claim 12 , wherein the sample comprises a known concentration amyloid beta aggregates, the method further comprising generating a dose response curve.

19. The method of claim 12 , comprising quantifying an amount of amyloid beta in the sample suspected of containing the amyloid beta by comparing the decrease in the drain current obtained as a result of binding of the amyloid beta in the sample suspected of containing the amyloid beta to Congo red of the binding partner specific for the analyte, to a dose response curve.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 4, 2022
From: WUSTONI, SHOFARUL; INAL, SAHIKA
To: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY
Reel/Frame 059811/0022 →
Continuity (3)
Provisional Application 62985015 · Mar 4, 2020
Provisional Application 62882481 · Aug 3, 2019
Related Publication 20220283116A1 · Sep 8, 2022
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