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Application of cyclophilin A restrainer in preparing anti-virus medicament

An anti-AIDS and inhibitor technology, used in drug delivery, pill delivery, antiviral agents, etc., can solve problems such as anti-HIV virus CypA inhibitors that have not been reported yet

Inactive Publication Date: 2008-01-23
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, so far, no one has reported CypA inhibitors with anti-HIV

Method used

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  • Application of cyclophilin A restrainer in preparing anti-virus medicament
  • Application of cyclophilin A restrainer in preparing anti-virus medicament
  • Application of cyclophilin A restrainer in preparing anti-virus medicament

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1 Virtual Screening of CypA Small Molecule Inhibitors

[0031] The Cyclophilin A (CypA, PPIA) gene has been registered in the Human Genome Database, and its accession number is NM_021130. In the PDB protein structure database, we retrieved the X-ray diffraction crystal structure of human CypA protein (PDB code: 1CWA). This structure is the crystal structure of CypA in complex with its natural inhibitor cyclosporin A (CsA). From this structure, we determined the active site of CypA, and identified several key amino acid sites in the active site that can be inhibited by CsA. Based on these structural information, we cooperated with the Shanghai Institute of Materia Medica, Chinese Academy of Sciences to screen several small molecule databases for the active site of CypA. The small molecule databases used for screening mainly include SPECS and CNPD. Finally, ASD3 of the present invention was screened. The whole calculation process is carried out on the 64CPU-SG...

Embodiment 2

[0032] Example 2 Utilizes BIAcore Molecular Interaction Instrument to Verify Virtual Screening Results

[0033] The BIAcore molecular interaction instrument is based on surface plasmon resonance technology to track the interaction between biomolecules without any markers, thus ensuring the authenticity of the experimental results to the greatest extent. During the experiment, the target biomolecules (CypA ​​protein) were immobilized on the surface of the sensor chip, and then the small molecule compounds were dissolved in the solvent and flowed over the surface of the chip. The monitor can track the changes in the whole process of binding and dissociation between molecules in the detection solution and target biomolecules on the chip surface in real time. Based on the binding data of BIAcore, we finally identified 12 small molecular compounds that can bind to CypA, and calculated the equilibrium-dissociation constant KD of the binding of these small molecular compounds to CypA...

Embodiment 3

[0034] Embodiment 3 compound anti-HIV-1 virus increment test

[0035] MT-2 cells were planted in a 96-well plate, 10 per well 4 indivual. The medium is RPMI1640 medium containing 10% fetal bovine serum. HIV-1 virus was used to infect the cells with 100 50% tissue infection equivalents, and at the same time, the compound was added with different concentration gradients and cultured overnight (the well without compound was used as the blank control). The next day, replace with fresh medium without small molecule compounds. On the fourth day, get 100uL of the culture supernatant, add 5% volume of Triton-X100 to obtain the virus lysate, and then use the ELISA method to measure the p24 protein content (p24 is the coat protein of HIV-1, which can be used as a measure of the number of virions) index of). Simply put, the double-antibody sandwich method is used to measure the amount of p24 protein produced in each well. Coat the plate with anti-HIV immunoglobulin overnight (pH 9.6...

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Abstract

The invention relates to the technical field of chemical industry, in particular to a preparation method and application of micromolecule compound with HIV resisting activity. CyPA is able to combine with the Gag polymer protein in HIV-1. Silence or inhibit the activity of CypA with RNAi technology and disturb the replication of virus. The micromolecule compound in the invention refers to a CyPA inhibitor that has the effect of resisting HIV-1 virus. Besides, as the micromolecule compound is designed while aiming at cellular target, the invention is not easy to develop drug resistance, thus meeting the demands of lifetime medication for AIDS patients. Therefore, the micromolecule compound in the invention, which can be developed as a new type anti-AIDS drug, provides a new means for treating and curing AIDS.

Description

technical field [0001] The invention relates to the fields of chemical engineering and medicine, and relates to the application of a cyclophilin A inhibitor in the preparation of anti-AIDS drugs. Background technique [0002] Cycliphilins (CyPs) are ubiquitously distributed intracellular proteins that are highly conserved in plants, bacteria, and mammals. They were originally discovered as cellular receptors for cyclosporin A. Cyclosporin A (Cyclosporin A, CsA) is a cyclic polypeptide containing 11 amino acids isolated from fungal metabolites. As an immunosuppressant drug, it is often used clinically to treat rejection and autoimmune system after organ transplantation. disease. There are more than 130 isomers of CyPs that have been discovered and cloned [GalatA, Metcalfe SM. Peptidyl proline cis-trans iso-merases. Prog Biophys Molec Biol, 1995; 63: 67.], which constitute the Cyclophilins family. CyPs has peptide prolyl cis-trans isomerase (PPIase) activity, catalyzes the p...

Claims

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Application Information

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IPC IPC(8): A61K31/341A61K9/20A61K9/08A61P31/18
Inventor 余龙陈帅赵雪梅蒋华良唐丽莎
Owner FUDAN UNIV
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