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| Open AccessContinually recruited naïve T cells contribute to the follicular helper and regulatory T cell pools in germinal centers
B cell clonal expansion and affinity maturation takes place in germinal centers (GC) and is orchestrated by follicular T cells. Here authors show that naïve conventional T cells are continuously recruited to the GCs during the GC reaction and develop into follicular helper and regulatory T cells, thus quantitatively contribute to remodelling the GC overtime.
- Julia Merkenschlager
- , Riza-Maria Berz
- & Michel C. Nussenzweig
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Article
| Open AccessClonal hematopoiesis with JAK2V617F promotes pulmonary hypertension with ALK1 upregulation in lung neutrophils
Pulmonary hypertension is characterized by increased pulmonary arterial pressure, driven in part by inflammatory infiltrates. Here, the authors show that in mice, transgenic expression of mutant JAK2 leads to clonal hematopoiesis and lung accumulation of elastase- and cytokine-expressing neutrophils, and that the phenotype can be reversed by ALK1 inhibition.
- Yusuke Kimishima
- , Tomofumi Misaka
- & Yasuchika Takeishi
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Article
| Open AccessIL-6 receptor blockade corrects defects of XIAP-deficient regulatory T cells
XLP-2 syndrome is caused by XIAP mutation. Here the authors show that mouse and human XIAP-deficient regulatory T cells have defective suppressive function as a result of conversion to proinflammatory cytokine producing cells, an effect that can be prevented by blocking the IL-6 receptor.
- Wan-Chen Hsieh
- , Tzu-Sheng Hsu
- & Ming-Zong Lai