Projects per year
Abstract / Description of output
Both TH2-dependent helminth killing and suppression of the TH2 effector response have been attributed to macrophages (MΦ) activated by IL-4 (M(IL-4)). To investigate how M(IL-4) contribute to diverse infection outcomes, the MΦ compartment of susceptible BALB/c mice and more resistant C57BL/6 mice was profiled during infection of the pleural cavity with the filarial nematode, Litomosoides sigmodontis. C57BL/6 mice exhibited a profoundly expanded resident MΦ (resMΦ) population, which was gradually replenished from the bone marrow in an age-dependent manner. Infection status did not alter the bone-marrow derived contribution to the resMΦ population, confirming local proliferation as the driver of resMΦ expansion. Significantly less resMΦ expansion was observed in the susceptible BALB/c strain, which instead exhibited an influx of monocytes that assumed an immunosuppressive PD-L2+ phenotype. Inhibition of monocyte recruitment enhanced nematode killing. Thus, the balance of monocytic vs. resident M(IL-4) numbers varies between inbred mouse strains and impacts infection outcome.
Keywords / Materials (for Non-textual outputs)
- Journal Article
FingerprintDive into the research topics of 'Myeloid cell recruitment versus local proliferation differentiates susceptibility from resistance to filarial infection'. Together they form a unique fingerprint.
- 3 Finished
1/07/14 → 30/06/17
Mechanisms of Th2 cell-intrinsic hypo-responsiveness, and its impact on protective immunity and memory to parasitic helminths
27/08/13 → 26/08/16
17/01/13 → 31/03/16