Myeloma cell-derived CXCL7 facilitates proliferation of tumor cells and occurrence of osteolytic lesions through JAK/STAT3 pathway
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View abstract on PubMed
Summary
This summary is machine-generated.Chemokine CXCL7 drives multiple myeloma (MM) cell proliferation and osteolytic bone lesions. Targeting CXCL7 may offer a new therapeutic strategy for MM patients at risk of pathological fractures.
Area Of Science
- Oncology
- Bone Biology
- Molecular Biology
Background
- Multiple myeloma (MM) is characterized by osteolytic lesions and pathological fractures, severely impacting patient quality of life.
- Identifying molecular drivers of these bone complications is crucial for developing effective treatments.
Purpose Of The Study
- To investigate the role of chemokine CXCL7 in MM pathogenesis, particularly in osteolytic bone damage and pathological fractures.
- To elucidate the underlying molecular mechanisms by which CXCL7 influences MM cell proliferation and bone destruction.
Main Methods
- Analysis of transcriptome and single-cell RNA-seq data from MM patients and databases.
- In vitro and in vivo studies using MM cell lines and a mouse xenograft tumor model.
- Investigation of signaling pathways, including JAK/STAT3, and expression of key genes like MMP13 and C-myc.
Main Results
- A subset of MM cells with high CXCL7 expression was identified, correlating with high proliferation and osteoclast activation.
- Elevated CXCL7 levels significantly enhanced MM cell proliferation and increased the risk of pathological fractures in patients.
- CXCL7 induced femoral fractures and reduced bone mineral density in a mouse model by activating the JAK/STAT3 pathway via CXCR2, upregulating MMP13 and C-myc.
Conclusions
- CXCL7 is a key regulator of osteolytic lesions and pathological fractures in multiple myeloma.
- Targeting CXCL7 presents a promising therapeutic strategy for managing bone disease in MM.
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