Proteomic Alterations in Multiple Myeloma: A Comprehensive Study Using Bone Marrow Interstitial Fluid and Serum...

Area of Science:

• Hematology
• Oncology
• Proteomics

Background:

• Multiple myeloma (MM) is the second most common hematological malignancy globally.
• A comprehensive proteomic analysis of both bone marrow interstitial fluid (BMIF) and serum from the same MM patients has not been previously reported.

Purpose of the Study:

• To investigate and compare the proteomic alterations in BMIF and serum of MM patients versus healthy controls.
• To identify potential protein biomarkers for MM diagnosis and understanding disease mechanisms.

Main Methods:

• Utilized multipronged quantitative proteomic approaches: 2D-DIGE, iTRAQ, and SWATH-MS.
• Performed bioinformatic analysis to decipher the biological context of identified proteins.
• Validated findings using immunoblotting, SRM assays, and ELISA in independent cohorts.

Main Results:

• Identified 279 differentially abundant proteins in MM BMIF and 116 in MM serum.
• Discovered a validated panel of five proteins (haptoglobin, kininogen 1, transferrin, apolipoprotein A1, and albumin) in MM serum.
• Demonstrated significant differences in protein abundance between MM patients and controls.

Conclusions:

• The identified panel of five proteins holds promise as a diagnostic tool for multiple myeloma.
• These proteins may contribute to understanding the underlying pathophysiology of MM.
• This study provides a foundation for further biomarker development in MM.