Application of vinexin-β gene in myocardial infarction

A technology of myocardial infarction and β gene, applied in the field of gene function and application

Active Publication Date: 2016-05-11
武汉惠康基因科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there is no international literature report on the application of Vinexin-β gene in coronary atherosclerotic heart disease

Method used

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  • Application of vinexin-β gene in myocardial infarction
  • Application of vinexin-β gene in myocardial infarction
  • Application of vinexin-β gene in myocardial infarction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] [Example 1] Myocardial infarction (MI) model acquisition

[0042] 1. Grouping of experimental animals: male C57BL / 6 background mice (WT), Vinexin-β gene knockout mice (Vinexin-β-KO) and heart-specific Vinexin-β transgenic mice (Vinexin-β-TG) and In non-transgenic mice (NTG), the myocardial infarction (MI) model was induced by ligation of the left anterior descending coronary artery (LAD) of the mouse heart. They were randomly divided into 8 groups, each group: C57BL / 6 background WT mouse sham operation group (WTSham) and MI operation group (WTMI), Vinexin-β knockout mouse sham operation group (Vinexin-β-KOSham) and MI group Surgery group (Vinexin-β-KOMI), non-transgenic mouse sham operation group (NTGSham) and MI operation group (NTGMI), heart-specific Vinexin-β transgenic mouse sham operation group (Vinexin-β-TGSham) and MI operation group group (Vinexin-β-TGMI).

[0043] 2. The MI model uses blocking the left anterior descending coronary artery (LAD) of the mouse he...

Embodiment 2

[0052] [Example 2] Mouse myocardial infarction (MI) model myocardial infarction ratio, myocardial hypertrophy and fibrosis detection

[0053] 1. Take materials

[0054] (1) Preliminary work: prepare a urine cup filled with 20mL of 10% formaldehyde in advance, and label it (mouse number, group, type of operation and date of collection). Place the petri dish filled with 10% KCl solution at the sampling site. Turn on the analytical balance, adjust to zero, and then weigh and kill the mice.

[0055] (2) Material collection: Ophthalmic curved forceps clamped the vascular pedicle below the atrial appendage, cut off the heart, and quickly placed it in 10% KCl solution. After the heart stops beating in the diastolic phase, place it on sterilized gauze, gently squeeze the fluid in the heart cavity, dip the surface fluid dry, weigh and record, put the heart into the corresponding urine cup, fix it for 48 hours and use it for pathological testing.

[0056] (3) Relevant measurement an...

Embodiment 3

[0073] [Example 3] Cardiac function detection in myocardial infarction (MI) model mice

[0074] 1 Ultrasound detection of cardiac function

[0075] 1.1 Preliminary preparation

[0076] (1) Anesthesia machine preparation: first connect the oxygen cylinder and the air inlet port on the anesthesia machine, then unscrew the sealing cap of the dosing port on the anesthesia machine, quickly add isoflurane to the safety scale, and then tighten the sealing cap. Unscrew the main valve on the oxygen cylinder, adjust the knob of the flow control valve, and maintain the outlet pressure at 0.2-0.3mPa.

[0077] (2) Preparation of the mice to be tested: After the mice to be tested were quickly anesthetized with isoflurane, the hair on the left chest area was shaved, and the head of the treated mice was inserted into the anesthetic catheter sleeve, and treated with 1.5-2.0% isoflurane Alkane maintains a stable anesthesia in mice.

[0078] 1.2 Cardiac function test

[0079] The mice were p...

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Abstract

The invention discloses application of a Vinexin-beta gene in coronary atherosclerotic heart disease, and belongs to the field of functions and application of the gene. According to the invention, Vinexin-beta knockout mouse and heart specificity Vinexin-beta transgenic mouse serve as experimental subjects and mouse heart ramus descendens anterior arteriae coronariae sinistrae (LAD) is blocked to form a myocardial infarction model, and a result shows that, compared with a WT control mouse, the Vinexin-beta knockout mouse is significantly inhibited in myocardial infarction proportion, myocardial hypertrophy and fibrosis degree and is remarkably better in heart functions, while the heart specificity Vinexin-beta transgenic mouse is obviously more serious in myocardial infarction proportion, myocardial hypertrophy and fibrosis degree and is remarkably worse in the heart functions, showing that the Vinexin-beta gene can promote and enhance occurrence and development of the coronary atherosclerotic heart disease. Therefore, the Vinexin-beta gene can serve as a drug target to screen medicines for treating the coronary atherosclerotic heart disease, and a Vinexin-beta inhibitor can be used for preparing a medicine for treating the coronary atherosclerotic heart disease.

Description

technical field [0001] The invention belongs to the field of gene function and application, in particular to the function and application of Vinexin-β gene in coronary atherosclerotic heart disease. Background technique [0002] Cardiovascular disease is a common and frequently-occurring disease that seriously threatens human life and health, and is the number one killer of human health. Ischemic heart disease is the main cause of death from cardiovascular diseases. Myocardial infarction (MI) is a common type of ischemic heart disease. If the blood supply of the myocardium is blocked for more than 30 minutes, the ultrastructural changes of various organelles will be caused. The changes and dysfunction of cardiomyocytes lead to irreversible damage and even death of cardiomyocytes. Within a few minutes after the onset of acute myocardial infarction, the myocardial cells in the ischemic central area will die due to ischemia, which is one of the common diseases that seriously t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K45/00A61K48/00A61K39/395A61P9/10A61P9/00
Inventor 李红良万埝张艳蒋丁胜王丕晓
Owner 武汉惠康基因科技有限公司
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