Description:
DYSTROPHIA MYOTONICA 1; DM1
DYSTROPHIA MYOTONICA PROTEIN KINASE; DMPK
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Repository
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NIGMS Human Genetic Cell Repository
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| Subcollection |
Heritable Diseases
Muscular Dystrophies |
| Class |
Disorders of Connective Tissue, Muscle, and Bone |
| Class |
Disorders with Trinucleotide Expansions |
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Cell Type
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Fibroblast
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Transformant
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Untransformed
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Race
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White
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Family Member
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1
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Relation to Proband
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proband
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Confirmation
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Molecular characterization after cell line submission to CCR
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Species
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Homo sapiens
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Common Name
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Human
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Remarks
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| PDL at Freeze |
5.34 |
| Passage Frozen |
8 |
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| IDENTIFICATION OF SPECIES OF ORIGIN |
Species of Origin Confirmed by Nucleoside Phosphorylase, Glucose-6-Phosphate Dehydrogenase, and Lactate Dehydrogenase Isoenzyme Electrophoresis |
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| CTG TRINUCLEOTIDE REPEAT EXPANSION ANALYSIS |
Mutational analysis of DNA from this subject with myotonic dystrophy performed by Dr. Robert G. Korneluk, Molecular Genetics Laboratory, Children's Hospital of Eastern Ontario, Canada, showed that the CTG trinucleotide repeat expansion length was greater than or equal to 4.5 kb determined by Southern blot analysis. This corresponds to up to 2000 CTG repeats. |
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| Gene |
DMPK |
| Chromosomal Location |
19q13.2-q13.3 |
| Allelic Variant 1 |
605377.0001; MYOTONIC DYSTROPHY |
| Identified Mutation |
(CTG)n EXPANSION; The consistent genetic defect associated with myotonic dystrophy is an amplified trinucleotide CTG repeat in the 3-prime untranslated region of the serine-threonine kinase gene DMK on 19q. Unaffected individuals have between 5 and 27 copies. DM patients who are minimally affected have at least 50 repeats, while more severely affected patients have expansion of the repeat-containing segment up to several kilobases. |
| Remarks |
EMG myotonia; myotonic face; distal weakness and atrophy; positive family history; affected daughter is GM03696C Lymphoid; expansion of CTG repeat is greater than or equal to 4.5 kb by Southern analysis corresponding to up to 2000 CTG repeats |
| Mateus T, Almeida I, Costa A, Viegas D, Magalhães S, Martins F, Herdeiro MT, da Cruz E Silva OAB, Fraga C, Alves I, Nunes A, Rebelo S, Fourier-Transform Infrared Spectroscopy as a Discriminatory Tool for Myotonic Dystrophy Type 1 Metabolism: A Pilot Study International journal of environmental research and public health18: 2021 |
| PubMed ID: 33917301 |
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| Neault N, O'Reilly S, Baig AT, Plaza-Diaz J, Azimi M, Farooq F, Baird SD, MacKenzie A, High-throughput kinome-RNAi screen identifies protein kinase R activator (PACT) as a novel genetic modifier of CUG foci integrity in myotonic dystrophy type 1 (DM1) PloS one16:e0256276 2020 |
| PubMed ID: 34520479 |
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| Rafehi H, Szmulewicz DJ, Bennett MF, Sobreira NLM, Pope K, Smith KR, Gillies G, Diakumis P, Dolzhenko E, Eberle MA, Barcina MG, Breen DP, Chancellor AM, Cremer PD, Delatycki MB, Fogel BL, Hackett A, Halmagyi GM, Kapetanovic S, Lang A, Mossman S, Mu W, Patrikios P, Perlman SL, Rosemergy I, Storey E, Watson SRD, Wilson MA, Zee DS, Valle D, Amor DJ, Bahlo M, Lockhart PJ, Bioinformatics-Based Identification of Expanded Repeats: A Non-reference Intronic Pentamer Expansion in RFC1 Causes CANVAS American journal of human genetics105:151-165 2019 |
| PubMed ID: 31230722 |
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| Tankard RM, Bennett MF, Degorski P, Delatycki MB, Lockhart PJ, Bahlo M, Detecting Expansions of Tandem Repeats in Cohorts Sequenced with Short-Read Sequencing Data American journal of human genetics105:151-165 2017 |
| PubMed ID: 30503517 |
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| Michalowski S, Miller JW, Urbinati CR, Paliouras M, Swanson MS, Griffith J, Visualization of double-stranded RNAs from the myotonic dystrophy protein kinase gene and interactions with CUG-binding protein. Nucleic Acids Res27(17):3534-42 1999 |
| PubMed ID: 10446244 |
| Passage Frozen |
8 |
| Split Ratio |
1:2 |
| Temperature |
37 C |
| Percent CO2 |
5% |
| Percent O2 |
AMBIENT |
| Medium |
Eagle's Minimum Essential Medium with Earle's salts and non-essential amino acids with 2mM L-glutamine or equivalent |
| Serum |
15% fetal bovine serum Not inactivated |
| Supplement |
- |
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