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Generation and Expansion of Primary, Malignant Pleural Mesothelioma Tumor Lines
Published on: April 21, 2022
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Human mesothelioma induces defects in dendritic cell numbers and antigen-processing function which predict survival
Scott M J Cornwall1, Matthew Wikstrom2, Arthur W Musk3
1School of Biomedical Sciences, Immunology and Cancer Group, Curtin University, Perth, Western Australia (WA), Australia; CHIRI Biosciences Research Precinct, Curtin University, Perth, WA, Australia.
Oncoimmunology
|April 9, 2016
Summary
Mesothelioma patients exhibit reduced numbers and impaired function of dendritic cells (DCs), crucial for immune responses. However, higher DC levels correlate with longer survival, suggesting potential for DC-targeting immunotherapies.
Area of Science:
- Immunology
- Oncology
- Cell Biology
Background:
- Mesothelioma is a fatal cancer with limited treatment options.
- Dendritic cells (DCs) are vital for initiating anti-tumor T cell responses.
- The functional status of DCs in mesothelioma patients remains unclear.
Purpose of the Study:
- To investigate the numerical and functional status of dendritic cells (DCs) in mesothelioma patients.
- To assess the potential of DC-targeting immunotherapies for mesothelioma treatment.
Main Methods:
- Compared circulating myeloid (m)DC1, mDC2, and plasmacytoid (p)DCs in mesothelioma patients versus healthy controls.
- Evaluated the differentiation and antigen-processing capacity of monocyte-derived DCs (MoDCs) from patients.
- Assessed MoDC maturation markers and response to activation stimuli (LPS, IFNγ, CD40L).
Main Results:
- Mesothelioma patients showed significantly reduced numbers of circulating DCs.
- Patient-derived monocytes had impaired differentiation into functional MoDCs with reduced antigen processing and co-stimulatory molecule expression.
- MoDCs from mesothelioma patients exhibited limited maturation responses to activation stimuli.
- Higher levels of mDC1s and/or MoDC maturation responsiveness correlated with improved patient survival.
Conclusions:
- Mesothelioma patients present with significant numerical and functional defects in dendritic cells.
- These DC deficits may contribute to T cell anergy or tolerance in mesothelioma.
- Targeting DCs, particularly in patients with higher DC levels or responsiveness, may offer a promising therapeutic strategy, potentially in combination with other treatments.
Keywords:
AgingCD40LigandMesotheliomaimmunotherapymyeloid dendritic cellsplasmacytoid dendritic cellssurvival outcomesMore Related Videos
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