GM-CSF and IL-4 Fusion Cytokine Induces B Cell-Dependent Hematopoietic Regeneration.
Hematopoietic stem cells (HSCs) have the capacity to self-renew and differentiate into hematopoietic cells and have been utilized to replace diseased bone marrow for patients with cancers and blood disorders. Although remarkable progress has been made in developing new tools to manipulate HSCs for clinic use, there is still no effective method to expand HSCs in vivo for quick repopulation of hematopoietic cells following sublethal irradiation. We have recently described a novel synthetic cytokine that is derived from the fusion of granulocyte macrophage colony-stimulating factor (GM-CSF) and interleukin 4 (IL-4; named as GIFT4), and we have now discovered that GIFT4 fusokine promotes long-term hematopoietic regeneration in a B cell-dependent manner. We found that GIFT4 treatment triggered a robust expansion of endogenous bone marrow HSCs and multipotent progenitors in vivo. Delivery of GIFT4 protein together with B cells rescued lethally irradiated mice. Moreover, adoptive transfer of autologous or allogeneic GIFT4-treated B cells (GIFT4-B cells) enhanced long-term hematopoietic recovery in radiated mice and prevented the mice from irradiation-induced death. Our data suggest that GIFT4 as well as GIFT4-B cells could serve as means to augment HSC engraftment in the setting of bone marrow transplantation for patients with hematological malignancy.
Division of Bone Marrow Transplantation and Immunotherapy, Department of Hematology and Medical Oncology, Winship Cancer Institute, Emory University, Atlanta, GA 30322, USA. Electronic address: jdeng2@emory.edu.
Jiusheng
J
Deng
Division of Bone Marrow Transplantation and Immunotherapy, Department of Hematology and Medical Oncology, Winship Cancer Institute, Emory University, Atlanta, GA 30322, USA.
Yanqiu
Y
Li
Division of Bone Marrow Transplantation and Immunotherapy, Department of Hematology and Medical Oncology, Winship Cancer Institute, Emory University, Atlanta, GA 30322, USA.
Andrea
A
Pennati
Division of Bone Marrow Transplantation and Immunotherapy, Department of Hematology and Medical Oncology, Winship Cancer Institute, Emory University, Atlanta, GA 30322, USA.
Shala
S
Yuan
Lady Davis Institute for Medical Research, Department of Oncology, McGill University, Montreal, QC H3A OG4, Canada.
Jian Hui
JH
Wu
Division of Bone Marrow Transplantation and Immunotherapy, Department of Hematology and Medical Oncology, Winship Cancer Institute, Emory University, Atlanta, GA 30322, USA.
Edmund K
EK
Waller
Division of Bone Marrow Transplantation and Immunotherapy, Department of Hematology and Medical Oncology, Winship Cancer Institute, Emory University, Atlanta, GA 30322, USA. Electronic address: jgalipe@emory.edu.
Jacques
J
Galipeau
D000818:Animals; D001402:B-Lymphocytes / Q000166:cytology* / Q000187:drug effects* / Q000378:metabolism; D015415:Biomarkers; D001854:Bone Marrow Cells / Q000187:drug effects / Q000378:metabolism; D002454:Cell Differentiation / Q000187:drug effects; D049109:Cell Proliferation / Q000187:drug effects; D016207:Cytokines / Q000378:metabolism; D016178:Granulocyte-Macrophage Colony-Stimulating Factor / Q000235:genetics; D006412:Hematopoietic Stem Cells / Q000166:cytology / Q000187:drug effects / Q000378:metabolism; D016130:Immunophenotyping; D015847:Interleukin-4 / Q000235:genetics; D038041:Lymphopoiesis / Q000187:drug effects*; D008297:Male; D051379:Mice; D023421:Models, Animal; D010641:Phenotype; D011993:Recombinant Fusion Proteins / Q000235:genetics / Q000494:pharmacology*
D015415:Biomarkers; D016207:Cytokines; D011993:Recombinant Fusion Proteins; D015847:Interleukin-4; D016178:Granulocyte-Macrophage Colony-Stimulating Factor
B cells; fusion cytokine; hematopoietic stem cells