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2014 ; 514
(7523
): 450-4
Nephropedia Template TP
Suzuki T
; Arumugam P
; Sakagami T
; Lachmann N
; Chalk C
; Sallese A
; Abe S
; Trapnell C
; Carey B
; Moritz T
; Malik P
; Lutzko C
; Wood RE
; Trapnell BC
Nature
2014[Oct]; 514
(7523
): 450-4
PMID25274301
show ga
Bone-marrow transplantation is an effective cell therapy but requires
myeloablation, which increases infection risk and mortality. Recent
lineage-tracing studies documenting that resident macrophage populations
self-maintain independently of haematological progenitors prompted us to consider
organ-targeted, cell-specific therapy. Here, using granulocyte-macrophage
colony-stimulating factor (GM-CSF) receptor-?-deficient (Csf2rb(-/-)) mice that
develop a myeloid cell disorder identical to hereditary pulmonary alveolar
proteinosis (hPAP) in children with CSF2RA or CSF2RB mutations, we show that
pulmonary macrophage transplantation (PMT) of either wild-type or
Csf2rb-gene-corrected macrophages without myeloablation was safe and
well-tolerated and that one administration corrected the lung disease, secondary
systemic manifestations and normalized disease-related biomarkers, and prevented
disease-specific mortality. PMT-derived alveolar macrophages persisted for at
least one year as did therapeutic effects. Our findings identify mechanisms
regulating alveolar macrophage population size in health and disease, indicate
that GM-CSF is required for phenotypic determination of alveolar macrophages, and
support translation of PMT as the first specific therapy for children with hPAP.
|*Cell Transplantation
[MESH]
|*Genetic Therapy
[MESH]
|Animals
[MESH]
|Cell Separation
[MESH]
|Cytokine Receptor Common beta Subunit/deficiency/*genetics
[MESH]