E-resources
Peer reviewed
-
Neehus, Anna-Lena; Landekic, Marija; Rezaei, Nima; Aladjidi, Nathalie; Gros, Philippe; Malo, Danielle; Nogee, Lawrence; Trapnell, Bruce; Casanova, Jean-Laurent; Bustamante, Jacinta
Clinical immunology (Orlando, Fla.), 20/May , Volume: 250Journal Article
Tissue-resident alveolar macrophages are important for lung homeostasis and innate immunity. They originate from fetal monocytes and are maintained in the lung through self-renewal or may arise from recruited circulating monocytes. Disturbance of alveolar macrophage function, their numbers or loss of GM-CSF signaling can all underlie pulmonary alveolar proteinosis (PAP). Here, we report eight patients (aged 8–21 years) from four kindreds and three ancestries suffering from recurrent pneumonia, progressive interstitial fibrosis, and PAP. All patients are deficient for the monocyte-chemoattractant protein-1 (CCL-2) receptor 2 (CCR2). Five patients are homozygous and three are compound heterozygous for private or rare CCR2 variants. The variants are loss-of-function for Ca2 +-release and cell migration upon CCL-2 stimulation, when tested by overexpression in monocytic THP-1 cells. Moreover, CCL-2-dependent migration and Ca2+-release of the patients’ monocytes are abolished, while their plasma CCL-2 levels are elevated. Yet, CCR2-deficient cells respond normally to GM-CSF. In addition, the counts, frequencies, and transcriptomes of blood lymphoid and myeloid subsets are normal. Mice deficient for CCR2 display alveolar septal wall thickening and increased number of alveolar type II cells producing surfactant protein C causing increased lung tissue hysteresis. CCR2-deficient mice are vulnerable to mycobacteria, with impaired attraction of blood monocytes to infected tissues. These findings suggest that human CCR2 is essential for the recruitment of monocytes to both pulmonary alveoli and tissues infected with mycobacteria.
Shelf entry
Permalink
- URL:
Impact factor
Access to the JCR database is permitted only to users from Slovenia. Your current IP address is not on the list of IP addresses with access permission, and authentication with the relevant AAI accout is required.
Year | Impact factor | Edition | Category | Classification | ||||
---|---|---|---|---|---|---|---|---|
JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Select the library membership card:
If the library membership card is not in the list,
add a new one.
DRS, in which the journal is indexed
Database name | Field | Year |
---|
Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
---|
Source: Personal bibliographies
and: SICRIS
The material is available in full text. If you wish to order the material anyway, click the Continue button.