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An hiv detection kit

Foreign code F170009192
File No. K02709WO
Posted date Sep 12, 2017
Country India
Application number CHE62182014
Gazette No. 6218/CHENP/2014
Gazette No. 312688
Date of filing Aug 18, 2014
Gazette Date Jul 1, 2016
Gazette Date May 13, 2019
International application number JP2013051389
International publication number WO2013111800
Date of international filing Jan 24, 2013
Date of international publication Aug 1, 2013
Priority data
  • P2012-013087 (Jan 25, 2012) JP
Title An hiv detection kit
Abstract The present invention provides an oligonucleotide for HIV detection including a base sequence which is at least 80% identical to a base sequence composed of 10 or more continuous bases in a base sequence represented by SEQ ID NO. 1 or 6, and an HIV detection kit and an HIV detection method that uses the oligonucleotide for HIV detection.
Outline of related art and contending technology BACKGROUND ART
With respect to the HIV infection which is the cause of the acquired immune deficiency syndrome (hereinafter, referred to as AIDS), as well as taking fundamentally preventive measures against HIV infection, in case the suspicion for possible infection arises, it is important to establish a technique which is capable of early diagnosis of the presence or absence of infection.
Further, even when the HIV may seem to have disappeared from the body by treatment, if the detection sensitivity of the virus in diagnostic techniques is low, in spite of the HIV being latent in the body, there is a possibility of misdiagnosis that the HIV has "disappeared" from the body, leaving the root for AIDS recurrence.
In the acute infection period after the HIV infection, the HIV invades into a host cell, reverse transcribes its own viral RNA to synthesize DNA, inserts the DNA into the host cell DNA, and turns into a provirus. In a host cell, the provirus expresses the viral genes and packages the viral RNA with its own viral proteins, thereby forming the virus particles, and the virus particles are going outside the host cell.
Currently, as an anti-HIV therapeutic method in clinical trial, a therapy combining multiple drugs (Highly Active Anti-Retroviral Therapy: hereinafter, referred to as a HAART therapy) is common. The HAART therapy is a method of administering a several kinds of inhibitors that inhibit reverse transcription of the viral RNA, insertion of the viral DNA into the genomic DNA, and the like in the acute infection period as described above. By the HAART therapy, anti-HIV therapies have been achieved a remarkable development.
On the other hand, in the course of treatment with the HAART therapy, a portion of infected cells acquire resistance to the HAART therapy (hereinafter, these infected cells will be referred to as the latently infected cells). In the latently infected cells, in spite of having a provirus, the viral life cycle observed in the acute infection period is at rest, and the viral RNA is not produced. Since the HAART therapy is for inhibiting the steps of the viral replication as described above, elimination of the virus from the latently infected cells by the HAART therapy is difficult. However, if the HAART therapy is interrupted, the life cycle of the virus in the latently infected cells resumes.
Therefore, impossibility of virus removal from the latent infected cells is adversely affecting the quality of life (QOL) of HIV patients.
On the other hand, the inventors of the present invention have found that the latently infected cells produce a short RNA of about 60 bases when a model cell line was constructed and the phenotype of latently infected cells was analyzed by using the model cell lines (see Non-Patent Document 1).
In the method for diagnosing HIV infection, it is important to quantify the viral load in the blood of infected individuals as an index to determine the degree of the condition and the healing process.
Currently, an RNA quantitative method for HIV based on the real-time PCR method as the principle of amplification and detection of target nucleic acids is known as one of the rapid diagnostic methods of HIV infection.
As the RNA quantitative method for HIV using the real-time PCR method, for example, the method described in Patent Document 1 can be mentioned. The method described in Patent Document 1 is a method of amplifying and quantifying the HIV-1 provirus inserted into the genome using degenerate primers designed so as to recognize the various subtypes of HIV-1. Such a method is advantageous in that it can deal not only with the subtype B which is the main source of infection among Japanese infected individuals, but also with a variety of other subtypes.
Scope of claims [claim1]
1. An HIV detection kit comprising a polyA polymerase; an oligonucleotide having a polyT and a base sequence complementary to an adapter sequence on the 5' side of the polyT, wherein the base sequence complementary to the adapter sequence is not complementary to an HIV gene; a primer set for HIV detection which consists of a forward primer and a reverse primer, wherein the forward primer comprises SEQ ID NO: 5 and the reverse primer consists of the base sequence complementary to the adapter sequence; and a probe having the base sequence comprising SEQ ID NO: 2, wherein the probe is labelled with a fluorescent dye, a radioisotope, a chemiluminescent body, an enzyme, or an antibody.
  • Applicant
  • Inventor
  • MIZUTANI Taketoshi
IPC(International Patent Classification)
Reference ( R and D project ) PRESTO RNA and biofunctions AREA
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