Recombinant Human Type II Mitochondrial Dynein-Like GTPase Gene Sequence and Its Application

A technology of dynein and mitochondria, applied in applications, gene therapy, genetic engineering, etc.

Active Publication Date: 2021-02-19
WUHAN NEUROPHTH BIOTECHNOLOGY LTD CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there have been no reports and production applications of any type of human mitochondrial dynein-like GTPase gene recombinant application of adeno-associated virus vector

Method used

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  • Recombinant Human Type II Mitochondrial Dynein-Like GTPase Gene Sequence and Its Application
  • Recombinant Human Type II Mitochondrial Dynein-Like GTPase Gene Sequence and Its Application
  • Recombinant Human Type II Mitochondrial Dynein-Like GTPase Gene Sequence and Its Application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0163] Example 1 Construction of recombinant adeno-associated virus vector of recombinant human type II mitochondrial dynein-like GTPase gene and its virus packaging and purification method

[0164] 1. Construction of recombinant adeno-associated virus vector containing human type II mitochondrial dynein-like GTPase gene

[0165] 1) Vector construction

[0166] The specially optimized recombinant human type II mitochondrial dynein-like GTPase gene (SEQ ID NO: 1) plus Kpn I and Sal I two restriction sites or the product amplified by PCR with the primers designed for the new gene and The pSNaV plasmid vector was digested with Kpn I and Sal I respectively, and the digested products were recovered. T4DNA Ligase was ligated overnight, and the ligated products were transformed into competent cells to obtain recombinant pSNaV / rAAV2 / 2-hOPA1 isoform 2( figure 2 ).

[0167] 2) Screening and identification of recombinants

[0168] Take the LB plates cultured at 37°C, blue spots and w...

Embodiment 2

[0195] Example 2: Effect experiment of rAAV2 / 2-hOPA1 recombinant adeno-associated virus on ADOA dominant hereditary optic neuropathy

[0196] 1. Intravitreal Injection of Rabbit Eyes

[0197] Take 24 rabbits and divide them into 3 groups, divided into experimental group A, experimental group B and control group, draw 50ul 1×10 12 vg / mL rAAV2 / 2-optimized hOPA1 isoform 2, rAAV2 / 2-original hOPA1 isoform 2 and rAAV-ZsGreen were punctured into the pars plana 3mm from the limbus into the vitreous cavity for intravitreal injection.

[0198] 2. Slit lamp, intraocular pressure, fundus photography examination

[0199] The rabbits in the two groups were examined with slit lamp and intraocular pressure at 1, 3, 7, and 30 days after operation respectively. All rabbits had no obvious abnormalities, no conjunctival hyperemia, discharge, endophthalmitis, and no increase in intraocular pressure. Fundus photography one month after surgery showed.

[0200] The result is as Figure 6 As show...

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Abstract

The invention discloses the recombinant human type II mitochondrial dynein-like GTPase gene sequence and its application, the nucleotide sequence of which is shown in SEQ ID NO.:1. Also disclosed is a fusion nucleic acid comprising the nucleic acid encoding human type II mitochondrial dynein-like GTPase. Further disclosed is a recombinant expression vector comprising the above nucleic acid or fusion nucleic acid. Also disclosed is a transformant which introduces the above-mentioned nucleic acid or fusion nucleic acid into a host. The nucleic acid encoding human type II mitochondrial dynein-like GTPase of the present invention has a higher expression level, so more human type II mitochondrial dynein-like GTPase can be obtained in the mitochondria, and can better treat eye diseases such as ADOA disease.

Description

technical field [0001] The invention relates to the field of biological preparations, in particular to the recombinant human type II mitochondrial dynein-like GTPase gene sequence and its application. Background technique [0002] Autosomal dominant optic atrophy (ADOA) is the most common form of primary hereditary optic neuropathy, with an incidence rate of about 1:12 000 to 1:50 000, and the onset is insidious in childhood. It is clinically characterized by mild to moderate progressive loss of vision, color vision deficits, central visual field defects, and temporal optic disc pallor. Initially there is damage to the papillary vascular bundle, followed by ascending atrophy of the optic nerve and loss of myelin sheath of the optic nerve. [0003] ADOA is caused by mutations in genes encoding inner mitochondrial membrane proteins and loci. Foreign scholars have determined that such genes are mainly OPA1-OPA8. It has been preliminarily confirmed that about 75% of ADOA patien...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C12N15/55C12N15/62C12N9/14C12N5/10A61K38/46A61P27/02
CPCC12N9/14A61P27/02A61K38/00A61K38/46C12N5/10C12Y306/00C12N2750/14143C12Y306/03005C12N15/86A61K48/005C12N15/52A61K48/00C12N2750/14141C12N2800/22C12Y306/05005
Inventor李斌
OwnerWUHAN NEUROPHTH BIOTECHNOLOGY LTD CO