AMSH gene mutant and application thereof
A mutant and nucleic acid technology, applied in the field of building drug screening models and biological sample kits, can solve the problems that need to be deepened and the etiology of patients is unknown, and achieve the effect of high early diagnosis rate.
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Embodiment 1
[0063] Example 1 Determination of Peroneal Muscular Dystrophy Pathogenic Mutations
[0064] 1. Sample collection
[0065] The inventor found a CMT family in Yanzhou and Weihai City, Shandong Province, and the family diagram is shown in figure 2 . like figure 2 , in which, ○ indicates normal female, □ indicates normal male, ■ indicates male patient, ● indicates female patient, and the arrow points to the proband (Y-04).
[0066] The CMT2A family contains 29 members, including 5 CMT2A patients. The proband (Y-04) was diagnosed with CMT2A by the Department of Neurology, The Third Affiliated Hospital of Peking University. The main symptoms of the proband were slow walking that started about 30 years ago (16-17 years old), easy falls from 25-26 years old, and gradually worsened, and began to affect daily life after 3 years, struggling to write, atrophy of the small muscles of the hands, and atrophy of the right hand. The left leg was swollen, and there was no obvious paresth...
Embodiment 2
[0087] Example 2 Sanger method sequencing verification
[0088] All family members (including patients and normal family members) in the family of patients with peroneal muscular dystrophy described in Example 1, as well as 200 normal people outside the family, were detected for AMSH gene: c.364A>G for AMSH gene Design primers for mutation, and then obtain the relevant sequence of the mutation site by PCR amplification, product purification and sequencing. According to the determination of whether the sequence is a mutant or wild type, verify the AMSH gene and the correlation between the mutation and Peroneal Muscular Dystrophy sex.
[0089] The specific method steps are as follows:
[0090] 1. DNA extraction
[0091] According to the method for extracting DNA described in Example 1, the genomic DNA in the peripheral venous blood of the subjects was extracted and prepared for use.
[0092] 2. Primer design and PCR reaction
[0093] First, referring to the human genome sequ...
Embodiment 3
[0106] Example 3 Detection Kit
[0107] A detection kit is prepared, comprising primers capable of detecting the c.364A>G mutation of AMSH gene, for screening biological samples susceptible to peroneal muscular dystrophy, wherein these primers are AMSH gene exon-specific primers whose sequences are As described in Example 2, SEQ ID NOs: 3-4 are shown.
[0108] The specific steps for screening biological samples susceptible to peroneal muscular dystrophy using the above-mentioned kit are: extract the DNA of the test subject according to the method described in 2.1 "DNA extraction" in step 2 of Example 1, take the extracted DNA as a template and The exon-specific primers of the above AMSH gene were subjected to PCR reaction (see Example 2 for the PCR reaction system and reaction conditions), and the PCR product was purified according to conventional methods in the art, and the purified product was sequenced, and then obtained by observing the sequencing results. 364A>G mutation...
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