Skip to Main content Skip to Navigation
Journal articles

Differential chemotactic receptor requirements for NK cell subset trafficking into bone marrow.

Abstract : Responsiveness of maturing natural killer (NK) cells to chemotactic molecules directly affect their retention and relocation in selected bone marrow (BM) microenvironment during development, as well as their localization at sites of immune response during inflammatory diseases. BM is the main site of NK cell generation, providing microenvironmental signals required to sustain cell proliferation and differentiation. Drastic changes of expression and function of several chemoattractant receptors can be observed during progression from precursor NK cells to immature and mature NK cells. Indeed, the gradual decrease of CXCR4 expression parallels the increased expression of CXCR3, CCR1, and CX3CR1 and S1P(5) (Sphingosine-1-phosphate receptor 5) on mature DX5(+) NK cells. The chemokine CXCL12 is produced constitutively in the BM and, acting via CXCR4, is critical for retaining immature and mature NK cell subsets in the BM. During steady-state, the maintenance of NK cells into BM parenchyma depends on the equilibrium of CXCR4 retention and S1P(5) mobilizing functions, as the gradient of S1P coming from the sinusoids facilitates mature NK cell egress into circulation via S1P(5), when CXCR4/CXCL12-mediated retention decreases. Chemoattractants are also key factors for the response to inflammatory or infection conditions that promote mobilization of effector NK cells from storage compartments (including BM) to sites of disease or for NK cell recruitment/response during pathological conditions that affect BM integrity, including hematopoietic malignancies. In this review, we summarize what is known about the requirement for NK cell localization and exit from BM and how chemokine-mediated functions may affect BM NK cell development and immune responses.
Document type :
Journal articles
Complete list of metadatas

Cited literature [59 references]  Display  Hide  Download

https://hal-riip.archives-ouvertes.fr/pasteur-01054144
Contributor : Istituto Pasteur Fondazione Cenci Bolognetti <>
Submitted on : Tuesday, August 5, 2014 - 11:19:25 AM
Last modification on : Tuesday, August 13, 2019 - 11:00:19 AM
Long-term archiving on: : Tuesday, April 11, 2017 - 7:04:12 PM

File

Bernardini_et_al.pdf
Publisher files allowed on an open archive

Identifiers

Collections

Citation

Giovanni Bernardini, Giuseppe Sciumè, Angela Santoni. Differential chemotactic receptor requirements for NK cell subset trafficking into bone marrow.. Frontiers in Immunology, Frontiers, 2013, 4, pp.12. ⟨10.3389/fimmu.2013.00012⟩. ⟨pasteur-01054144⟩

Share

Metrics

Record views

150

Files downloads

235