Background: Characterization of the immunoglobulin gene repertoire has improved our understanding of the immunopathogenesis of lymphoid tumors. Early B-lymphocyte precursors of multiple myeloma are known to exist and might be susceptible to antigenic drive.
Design And Methods: To verify this hypothesis, we collected a database of 345 fully readable multiple myeloma immunoglobulin sequences. We characterized the immunoglobulin repertoire, analyzed the somatic hypermutation load, and investigated for stereotyped receptor clusters.
Results: Compared to the normal immunoglobulin repertoire, multiple myeloma displayed only modest differences involving only a few genes, showing that the myeloma immunoglobulin repertoire is the least skewed among mature B-cell tumors. Median somatic hypermutation load was 7.8%; median length of complementarity determining-region 3 was 15.5 amino acids. Clustering analysis showed the absence of myeloma specific clusters and no similarity with published chronic lymphocytic leukemia or lymphoma subsets.
Conclusions: Analysis of multiple myeloma immunoglobulin repertoire does not support a pathogenetic role for antigen selection in this tumor.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3366649 | PMC |
| http://dx.doi.org/10.3324/haematol.2011.052852 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Toll-like receptor 1/2 activation reduces immunoglobulin free light chain production by multiple myeloma cells in the context of bone marrow stromal cells and fibronectin.
PLoS One
January 2025
Division of Pharmacology, Department of Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, The Netherlands.
Toll-like receptor (TLRs) activation in multiple myeloma (MM) cells induces heterogeneous functional responses including cell growth and proliferation, survival or apoptosis. These effects have been suggested to be partly due to increase in secretion of cytokines such as IL-6 or IFNα among others from MM cells following TLR activation. However, whether triggering of these receptors also modulates production of immunoglobulin free light chains (FLCs), which largely contribute to MM pathology, has not been investigated in MM cells before.
View Article and Find Full Text PDFPrognostic signature based on mitochondria- and angiogenesis-related genes associated with immune microenvironment of multiple myeloma.
Hematology
December 2025
Department of Hematology, XuChang Central Hospital, XuChang, People's Republic of China.
Introduction: Mitochondria and angiogenesis play key roles in multiple myeloma (MM) development, but their interrelated genes affecting MM prognosis are under-studied.
Methods: We analyzed TCGA_MMRF and GSE4581 datasets to identify four genes - CCNB1, CDC25C, HSP90AA1, and PARP1 - that significantly correlate with MM prognosis, with high expression indicating poor outcomes.
Results: A prognostic signature based on these genes stratified patients into high- and low-risk groups, with the latter showing better survival.
Characteristics and outcomes of secondary acute lymphoblastic leukemia (sALL) after multiple myeloma (MM): SEER data analysis in a single-center institution.
Cancer Pathog Ther
January 2025
Department of Hematology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China.
Background: Secondary acute lymphoblastic leukemia (sALL) is rare in patients diagnosed with antecedent multiple myeloma (MM). This study aimed to elucidate the clinical features and outcomes of patients with sALL after MM.
Methods: We conducted this population-based study using the Surveillance, Epidemiology, and End Results (SEER) database and retrospectively reviewed patients with sALL following MM treatment at our institution.
Recent Updates in the Diagnosis and Management of Kidney Diseases in Multiple Myeloma.
Indian J Nephrol
July 2024
Department of Nephrology, Asian Institute of Nephrology and Urology, Dilsukhnagar Hyderabad, India.
Multiple myeloma (MM) represents a difficult-to-treat plasma cell malignancy and the second most common hematologic malignancy in adults, significantly impacting kidney function. The spectrum of kidney involvement in MM is broad, encompassing electrolyte imbalances, tubular injury, and even rare glomerular diseases. The evolution of MM treatment modalities has led to notable improvements in the long-term survival of patients experiencing kidney-related complications.
View Article and Find Full Text PDFBackground: Anti-CD38 monoclonal antibodies (mAbs) have significantly changed the multiple myeloma treatment landscape. This meta-analysis compared the efficacy and safety of anti-CD38 mAb-based therapy versus standard therapy in newly diagnosed multiple myeloma (NDMM) patients.
Methods: We performed a comprehensive literature search on PubMed, the Cochrane Database, and ClinicalTrials.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!