The isolation and characterization of a novel cDNA demonstrating an altered mRNA level in nontumorigenic Wilms' microcell hybrid cells.
Wilms' tumor, a pediatric nephroblastoma, has been associated with genetic alterations of the 11p13 and 11p15 regions. The introduction of a der(11) chromosome into the G401 Wilms' tumor cell line has been shown previously to revert the tumorigenic phenotype. A subtractive cDNA/RNA hybridization performed between the tumorigenic parent (G401) and a nontumorigenic microcell hybrid of G401 (110.1/G401.1) containing the der(11) chromosome resulted in the identification of a single novel cDNA clone, designated QM. The cDNA is 745 nucleotides in length and encodes a predicted hydrophilic 25 kd basic protein, primarily consisting of alpha helices. The QM transcript is expressed in a wide variety of embryonic and adult tissues and demonstrates a down regulation of expression in adult kidney and heart. QM is also a member of a multigene family members of which map to chromosomes 6 and 14. The QM mRNA level is modulated between the tumorigenic and nontumorigenic cell lines and therefore may be involved in the maintenance of the nontumorigenic phenotype.
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- Wilms Tumor
- Tumor Cells, Cultured
- RNA, Messenger
- Organ Specificity
- Nucleic Acid Hybridization
- Molecular Sequence Data
- Hybrid Cells
- Humans
- Genes, Tumor Suppressor
- Developmental Biology
Citation
Published In
DOI
ISSN
Publication Date
Volume
Issue
Start / End Page
Location
Related Subject Headings
- Wilms Tumor
- Tumor Cells, Cultured
- RNA, Messenger
- Organ Specificity
- Nucleic Acid Hybridization
- Molecular Sequence Data
- Hybrid Cells
- Humans
- Genes, Tumor Suppressor
- Developmental Biology