Kit and method for detecting coronavirus

Patent metadata

Field	Value
Publication number	US-12540914-B2
Application number	US-202217981067-A
Country	US
Kind code	B2
Filing date	Nov 4, 2022
Priority date	Dec 31, 2021
Publication date	Feb 3, 2026
Grant date	Feb 3, 2026

Abstract

Provided are a kit for detecting Coronavirus using magnetic nanoparticles and a method detecting Coronavirus using the same. The kit for detecting Coronavirus includes a reactor having an opening on one side and provided with a sample containing Coronavirus, at least one magnetic nanoparticle part provided in the reactor, a conductive substrate provided to cover the opening of the reactor, and a magnetic field applying part for applying a magnetic field to the reactor, in which the magnetic nanoparticle part includes a magnetic nanoparticle including a core portion made of iron oxide and a shell portion made of gold and provided to surround the core portion, and a primer attached to the shell portion of the magnetic nanoparticle.

First claim

What is claimed is:

1 . A kit for detecting coronavirus comprising:
magnetic nanoparticles and primers attached to a surface of the magnetic nanoparticles, wherein the primers form amplified products through a polymerase chain reaction with the coronavirus, and the magnetic nanoparticles detect the coronavirus by amplifying an electrochemical signal by a repeated potential application, and wherein the primers include any one or more of SEQ ID NO: 1 to SEQ ID NO: 6.

2 . The kit for detecting the coronavirus of claim 1 , wherein the electrochemical signal measures a change in current value by applying DC or AC power.

3 . The kit for detecting the coronavirus of claim 1 , wherein the coronavirus is any one or more of HCoV-229E, HCoV-OC43, SARS-CoV, HCoV-NL63, HCoV-HKU1, MERS-COV, and COVID-19 (SARS-CoV-2).

4 . The kit for detecting the coronavirus of claim 1 , wherein the magnetic nanoparticles include a magnetic nanoparticle comprising a core portion comprising iron oxide and a shell portion comprising gold provided to surround the core portion, and
the primers are modified with a compound having any one of a thiol group and an amino group at a 5′-end.

5 . The kit for detecting the coronavirus of claim 4 , wherein an average diameter of the magnetic nanoparticles is provided with a first length and an average thickness of the shell portion is provided with a second length, wherein the second length is 0.09 to 0.15 times the first length.

6 . The kit for detecting the coronavirus of claim 4 , wherein an average diameter of the magnetic nanoparticles is provided with a first length and an average thickness of the shell portion is provided with a second length, wherein the first length is 170 nm to 300 nm and the second length is 15 nm to 40 nm.

7 . The kit for detecting the coronavirus of claim 4 , wherein the magnetic nanoparticles are prepared by preparing the core portion made of the iron oxide,
providing a buffer portion containing silicon on a surface of the core portion, and functionalizing an outer surface of the buffer portion with at least one of an amino group (—NH 2 ) or a thiol group (—SH) and then forming the shell portion containing the gold.

8 . The kit for detecting the coronavirus of claim 1 , further comprising:
a reactor having an opening on one side; a conductive substrate provided to cover the opening of the reactor; a first electrode and a second electrode provided in the reactor; and a potentiostat for measuring the electrochemical signal using the conductive substrate and the first and second electrodes as a three-electrode module.

9 . The kit for detecting the coronavirus of claim 8 , wherein the magnetic nanoparticles and the amplified products formed on the surface of the magnetic nanoparticles are provided in the reactor, and
the first electrode includes a reference electrode, the conductive substrate includes a working electrode, and the second electrode includes a counter electrode controlling an electron balance generated from the reference electrode and the working electrode, wherein the first electrode or the second electrode consists of any one or more of gold (Au), cobalt (Co), platinum (Pt), silver (Ag), carbon nanotube, graphene, and carbon, and the conductive substrate includes any one or more of indium tin oxide (ITO), ZnO, SnO 2 , In 2 O 3 , CdSnO 4 , a carbon substrate material including carbon nanotubes, a fluorine-doped tin oxide (FTO), and an aluminum doped zinc oxide (AZO).

10 . The kit for detecting the coronavirus of claim 8 , wherein the potentiostat includes any one or more of a differential pulse voltammeter (DPV), an anodic stripping voltammeter (ASV), a chronoamperometer (CA), a cyclic voltammeter, a square wave voltammeter (SWV), and an impedance meter.

11 . The kit for detecting the coronavirus of claim 8 , wherein when a magnetic field is reversibly applied into the reactor one or more times with the conductive substrate interposed therebetween,
the magnetic nanoparticles move toward the opening of the reactor.

12 . The kit for detecting the coronavirus of claim 8 , wherein the first electrode is a reference electrode containing Ag/AgCl, the second electrode is a counter electrode containing Pt, and the conductive substrate is a working electrode containing ITO, and
the measuring of the electrochemical signal includes a differential pulse voltammetry (DPV).

Assignees

• Univ Korea Res & Bus Found
• Iucf Hyu Erica Campus

Inventors

• Kim Young Keun
• Lee Ju Hun
• Park Bum Chul
• Park Hyeon Su
• Soh Jeong Ook

Classifications

• G01N2800/26

  Infectious diseases, e.g. generalised sepsis · CPC title

• C12Q1/701 Primary

  Specific hybridization probes · CPC title

• B82Y15/00

  Nanotechnology for interacting, sensing or actuating, e.g. quantum dots as markers in protein assays or molecular motors · CPC title

• G01N27/3278 Primary

  involving nanosized elements, e.g. nanogaps or nanoparticles (nanopores G01N33/48721; magnetic beads G01N27/745) · CPC title

• Y02A50/30

  Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change · CPC title