Characterization and use of the novel human multiple myeloma cell line MC-B11/14 to study biological consequences of CRISPR-mediated loss of immunoglobulin A heavy chain.
Exp Hematol
; 57: 42-49.e1, 2018 01.
Article
em En
| MEDLINE
| ID: mdl-29030084
ABSTRACT
The genetic abnormalities underlying multiple myeloma (MM) are notoriously complex and intraclonal heterogeneity is a common disease feature. In the current study, we describe the establishment of a monoclonal immunoglobulin A (IgA) kappa (κ) MM cell line designated MC-B11/14. Cytogenetic and fluorescence in situ hybridization analyses of the original and relapse patient samples revealed that the MM clone was nonhyperdiploid and possessed an 11;14 chromosomal translocation. The MC-B11/14 cell line, established from the relapse sample, is tetraploid and houses the t(11;14) abnormality. Given our long-standing interest in Ig function and secretion, we next used CRISPR technology to knock out IgA heavy-chain expression in the MC-B11/14 cells to assess the biological consequences of converting this cell line to one only expressing κ light chains. As expected, secretion of intact IgA was undetectable from MC-B11/14IgA- cells. Sensitivity to pomalidomide treatment was similar between the MC-B11/14WT and MC-B11/14IgA- cells; however, MC-B11/14IgA- cells were found to be significantly more resistant to bortezomib treatment. This study describes the establishment of a new human MM cell line tool with which to study disease biology and the use of CRISPR technology to create a potentially useful model with which to study MM light-chain escape.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Contexto em Saúde:
6_ODS3_enfermedades_notrasmisibles
Problema de saúde:
6_cardiovascular_diseases
/
6_congenital_chromosomal_anomalies
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6_lymphomas_multiple_myeloma
Assunto principal:
Imunoglobulina A
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Genes de Imunoglobulinas
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Cadeias Pesadas de Imunoglobulinas
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Linhagem Celular Tumoral
/
Técnicas de Inativação de Genes
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Sistemas CRISPR-Cas
/
Mieloma Múltiplo
Tipo de estudo:
Prognostic_studies
Limite:
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Exp Hematol
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
Estados Unidos