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Gene set: LK_DOWN_MAGRANGEAS (C2:PERT:0099)
Standard nameLK_DOWN_MAGRANGEAS
Systematic nameC2:PERT:0099
Brief descriptionGenes downregulated in multiple myeloma plasma cells that secrete the light chain immunoglobulin Ig-lambda versus those that secrete Ig-kappa.
CategoryC2: Curated
Sub-categoryPERT: Experimental pertuberation
Full description or Abstract

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Although multiple myeloma (MM) is a unique entity, a marked heterogeneity
is actually observed among the patients, which has been first
related to immunoglobulin (Ig) types and light chain subtypes
and more recently to chromosomal abnormalities. To further investigate
this genetic heterogeneity, we analyzed gene expression profiles
of 92 primary tumors according to their Ig types and light chain
subtypes with DNA microarrays. Several clusters of genes involved
in various biologic functions such as immune response, cell cycle
control, signaling, apoptosis, cell adhesion, and structure significantly
discriminated IgA- from IgG-MM. Genes associated with inhibition
of differentiation and apoptosis induction were up-regulated while
genes associated with immune response, cell cycle control, and
apoptosis were down-regulated in IgA-MM. According to the expression
of the 61 most discriminating genes, BJ-MM represented a separate
subgroup that did not express either the genes characteristic
of IgG-MM or those of IgA-MM at a high level. This suggests that
transcriptional programs associated to the switch could be maintained
up to plasma cell differentiation. Several genes whose products
are known to stimulate bone remodeling discriminate between kappa-
and lambda-MM. One of these genes, Mip-1alpha, was overexpressed
in the kappa subgroup. In addition, we established a strong association
(P =.0001) between kappa subgroup expressing high levels of Mip-1alpha
and active myeloma bone disease. This study shows that DNA microarrays
enable us to perform a molecular dissection of the bioclinical
diversity of MM and provide new molecular tools to investigate
the pathogenesis of malignant plasma cells. 
Publication URL12623842
External linksna
Keywords & MeSH headingsApoptosis/genetics,lambda-Chain/genetics,Middle Aged,Oligonucleotide Array Sequence Analysis,Macrophage Inflammatory Protein-1/genetics,Gene Expression Profiling,Gene Rearrangement,Immunoglobulins,Plasma Cells/immunology,Multiple Myeloma,immunology,Humans,Signal Transduction/genetics,Genes,Cell Adhesion/genetics,MHC Class II,genetics,Reverse Transcriptase Polymerase Chain Reaction,cdc,Immunoglobulin G/genetics,Aged,kappa-Chain/genetics,Immunoglobulin A/genetics,Heavy-Chain/genetics
OrganismHuman
Contributed byKate Stafford
Source platformGene_Symbol
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Genes

38 genes, 38 accessions (Toggle view)

GeneTitleLinks
DSG1desmoglein 1Source|GeneCards
UBE4Aubiquitination factor E4A (UFD2 homolog, yeast)Source|GeneCards
SMARCA1SWI/SNF related, matrix associated, actin dependent regulator of chromatin, subfamily a, member 1Source|GeneCards
TJP2tight junction protein 2 (zona occludens 2)Source|GeneCards
NR2C1nuclear receptor subfamily 2, group C, member 1Source|GeneCards
CTSBcathepsin BSource|GeneCards
BMP2bone morphogenetic protein 2Source|GeneCards
CUL4Acullin 4ASource|GeneCards
EXT1Exostoses (multiple) 1Source|GeneCards
FGRGardner-Rasheed feline sarcoma viral (v-fgr) oncogene homologSource|GeneCards
UBE3Aubiquitin protein ligase E3A (human papilloma virus E6-associated protein, Angelman syndrome)Source|GeneCards
NFE2L3nuclear factor (erythroid-derived 2)-like 3Source|GeneCards
PRKCABPprotein kinase C, alpha binding proteinSource|GeneCards
ELAVL4ELAV (embryonic lethal, abnormal vision, Drosophila)-like 4 (Hu antigen D)Source|GeneCards
CYB5cytochrome b-5Source|GeneCards
LAMB3laminin, beta 3Source|GeneCards
EDN3endothelin 3Source|GeneCards
IGKCimmunoglobulin kappa constantSource|GeneCards
ZNF198zinc finger protein 198Source|GeneCards
MMP12matrix metalloproteinase 12 (macrophage elastase)Source|GeneCards
HSD17B2hydroxysteroid (17-beta) dehydrogenase 2Source|GeneCards
CSNK2A2casein kinase 2, alpha prime polypeptideSource|GeneCards
PLXNB3plexin B3Source|GeneCards
BPHLbiphenyl hydrolase-like (serine hydrolase; breast epithelial mucin-associated antigen)Source|GeneCards
SIAH2seven in absentia homolog 2 (Drosophila)Source|GeneCards
DDR1discoidin domain receptor family, member 1Source|GeneCards
GSTM5glutathione S-transferase M5Source|GeneCards
SH3GL2SH3-domain GRB2-like 2Source|GeneCards
PRKCIprotein kinase C, iotaSource|GeneCards
RECQL5RecQ protein-like 5Source|GeneCards


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