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December 8, 2025Blood

Multi-omics profiling reveals an immunosuppressive microenvironment and PRL-3 as a therapeutic target in myeloma extramedullary disease

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Authors

HHHe Huang

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Overview

Single-cell RNA sequencing identifies hypoxia and PTP4A3 as therapeutic targets in extramedullary myeloma, suggesting immunosuppressive microenvironments.

Key Points

  • To characterize the tumor microenvironment in extramedullary myeloma and identify therapeutic targets.
  • Single-cell RNA sequencing of pleural effusion or ascites and bone marrow pairs
  • Analysis of MMRF CoMMpass dataset
  • Assessment of CD8+ T-cell cytotoxicity and macrophage polarization
  • In vivo studies using NCG mice to evaluate PRL-3 inhibition effects
  • CD8+ T-cell cytotoxicity reduced in extramedullary lesions vs bone marrow
  • Higher M2 polarization scores observed in extramedullary sites
  • Elevated PTP4A3 (PRL3) associated with poor survival outcomes in myeloma
  • PRL-3 inhibitor suppressed cell migration and proliferation

Cite This Study

He Huang (2025) studied this question.

synapsesocial.com/papers/69362f484fa91c937236d6c8https://doi.org/10.1182/blood-2025-5710
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