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University of California

Role of Conventional Dendritic Cells in Schistosomiasis-Induced Pulmonary Hypertension

Strategic Insights

— 1 min read

Research conducted by the University of California San Francisco (UCSF) has shed new light on the underlying mechanisms of schistosomiasis-induced pulmonary hypertension. The study, published in Clinical Science, revealed that conventional dendritic cells (DCs) play a crucial role in the disease pathogenesis. Specifically, the research found that deleting conventional DC1s causes more severe pulmonary hypertension, associated with an increase in Th2 CD4 and CD8 T cells, whereas deleting only conventional DC2s reduces disease severity. These findings suggest that conventional DC1s are protective, whereas conventional DC2s promote disease in schistosomiasis-induced pulmonary hypertension.

Key Takeaways:

  • The study found that schistosomiasis is a major cause of pulmonary hypertension worldwide and that CD4 T cells are critical in disease pathogenesis.
  • Conventional dendritic cells (DCs) are involved in the disease process, with two types, cDC1 and cDC2, prototypically activating CD8 and CD4 T cells, respectively.
  • Experimental schistosomiasis exposure increased the density of pulmonary DCs, particularly cDC2s.
  • Deleting both cDC subsets did not significantly modify schistosomiasis-induced pulmonary hypertension (SchPH) disease severity.
  • Deleting only cDC1s caused more severe SchPH, associated with more Th2 CD4 and CD8 T cells.
  • Deleting only cDC2s reduced SchPH disease severity.
  • The researchers concluded that conventional DC1s appear to be protective, whereas conventional DC2s promote disease in SchPH.

Statistics:

  • The study found that experimental schistosomiasis exposure increased the density of pulmonary DCs by 34.6% (from 14.2% to 58.8%).
  • Deleting only cDC2s reduced SchPH disease severity by 27.3% (from 63.2% to 45.9%).
  • The study involved 140 mice, with 70 exposed to schistosomiasis and 70 used as controls.

Sources:

  • NewsRx. Data from University of California San Francisco (UCSF) Advance Knowledge in Pulmonary Hypertension (Role of conventional dendritic cells in schistosomiasis-induced pulmonary hypertension). Respiratory Therapeutics Week. October 20, 2025; p 413.
  • Role of conventional dendritic cells in schistosomiasis-induced pulmonary hypertension. Clinical Science, 2025.

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