GM16882
Fibroblast from Skin, Unspecified
Description:
BLOOM SYNDROME; BLM
RECQ PROTEIN-LIKE 3; RECQL3
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Repository
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NIGMS Human Genetic Cell Repository
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| Subcollection |
Heritable Diseases
Hereditary Cancers |
| Class |
Repair Defective and Chromosomal Instability Syndromes |
| Class |
Syndromes with Increased Chromosome Breakage |
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Biopsy Source
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Unspecified
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Cell Type
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Fibroblast
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Tissue Type
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Skin
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Transformant
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Untransformed
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Sample Source
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Fibroblast from Skin, Unspecified
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Race
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White
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Ethnicity
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ASHKENAZI
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Relation to Proband
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proband
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Confirmation
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Molecular characterization before 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 |
5.32 |
| Passage Frozen |
19 |
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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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| Gene |
RECQL3 |
| Chromosomal Location |
15q26.1 |
| Allelic Variant 1 |
; BLOOM SYNDROME |
| Identified Mutation |
3261delT |
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| Gene |
RECQL3 |
| Chromosomal Location |
15q26.1 |
| Allelic Variant 2 |
604610.0001; BLOOM SYNDROME |
| Identified Mutation |
6-BP DEL/7-BP INS; In 4 ostensibly unrelated persons of Jewish ancestry, Ellis et al. [Cell 83: 655 (1995)] found homozygosity for a 6-bp deletion/7-bp insertion at nucleotide 2281 of the BLM cDNA. Deletion of ATCTGA and insertion of TAGATTC caused the insertion of the novel codons for LDSR after amino acid 736, and after these codons there was a stop codon. Ellis et al. [Cell 83: 655 (1995)] concluded that a person carrying this deletion/insertion mutation was a founder of the Ashkenazi-Jewish population, and that nearly all Ashkenazi Jews with Bloom syndrome inherited the mutation identical by descent from this common ancestor. |
| Remarks |
Clinically affected; B.S. Registry # 26; born at term; birth weight = 2,229 grams; at age 1.3 years: weight = 6.3 kg, height = 66 cm; at age 1 year head circumference = 40.8 cm; sun sensitive facial telangiectasias; sacral dimple; elevated chromosome breakage; elevated sister chromosome exchange level; one affected sister; donor is a compound heterozygote: one allele has a 1-bp deletion at nucleotide 3261 of the RECQL3 gene [3261delT] and a second allele has a 6-bp deletion/7-bp insertion [6-bp del/7-bp ins] at nucleotide 2,281 of the open reading frame of the RECQL3 gene, which results in a frameshift and a stop codon. |
| German J, Bloom D, Passarge E, Bloom's syndrome. V. Surveillance for cancer in affected families. Clin Genet12:162-8 1977 |
| PubMed ID: 908169 |
| Passage Frozen |
19 |
| Split Ratio |
1:2 |
| Temperature |
37 C |
| Percent CO2 |
10% |
| Percent O2 |
AMBIENT |
| Medium |
Dulbecco Modified Eagles Medium (high glucose) with 2mM L-glutamine or equivalent |
| Serum |
15% fetal bovine serum Not inactivated |
| Substrate |
Gelatin |
| Supplement |
- |
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