Abstract:
:Allogeneic hematopoietic stem cell transplantation (HSCT) is widely used to treat hematopoietic cell disorders but is often complicated by graft-versus-host disease (GVHD), which causes severe epithelial damage. Here we have investigated longitudinally the effects of induction chemotherapy, conditioning radiochemotherapy, and allogeneic HSCT on composition, phenotype, and recovery of circulating innate lymphoid cells (ILCs) in 51 acute leukemia patients. We found that reconstitution of ILC1, ILC2, and NCR(-)ILC3 was slow compared with that of neutrophils and monocytes. NCR(+) ILC3 cells, which are not present in the circulation of healthy persons, appeared both after induction chemotherapy and after allogeneic HSCT. Circulating patient ILCs before transplantation, as well as donor ILCs after transplantation, expressed activation (CD69), proliferation (Ki-67), and tissue homing markers for gut (α4β7, CCR6) and skin (CCR10 and CLA). The proportion of ILCs expressing these markers was associated with a decreased susceptibility to therapy-induced mucositis and acute GVHD. Taken together, these data suggest that ILC recovery and treatment-related tissue damage are interrelated and affect the development of GVHD.
journal_name
Bloodjournal_title
Bloodauthors
Munneke JM,Björklund AT,Mjösberg JM,Garming-Legert K,Bernink JH,Blom B,Huisman C,van Oers MH,Spits H,Malmberg KJ,Hazenberg MDdoi
10.1182/blood-2013-11-536888subject
Has Abstractpub_date
2014-07-31 00:00:00pages
812-21issue
5eissn
0006-4971issn
1528-0020pii
blood-2013-11-536888journal_volume
124pub_type
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