PMID- 7691636 OWN - NLM STAT- MEDLINE DCOM- 19931101 LR - 20220321 IS - 0301-472X (Print) IS - 0301-472X (Linking) VI - 21 IP - 11 DP - 1993 Oct TI - Differential regulation of the expression of CD38 and human leukocyte antigen-DR on CD34+ hematopoietic progenitor cells by interleukin-4 and interferon-gamma. PG - 1480-6 AB - We studied the effects of interleukin-4 (IL-4) and interferon-gamma (IFN-gamma) on the expression of CD38 and human leukocyte antigen (HLA)-DR on purified CD34+ bone marrow progenitor cells. CD34+CD38- and CD34+HLA-DR- cells are largely nonoverlapping populations. After culture for 4 days in IFN-gamma, the expression of CD38 and HLA-DR is significantly increased and the disappearance of the CD38- and HLA-DR- populations is virtually complete. Moreover, IFN-gamma induces a population of CD34+ cells with a very high expression of CD38 (CD34+CD38++ cells), which were absent in the initial CD34+ population. IL-4 has no effect on the expression of CD38, but induces a limited but significant increase in the expression of HLA-Dr. After culture in IFN-gamma, CD34+ cells show a higher cloning efficiency of the colony-forming unit-macrophage (CFU-M) and burst-forming unit-erythroid (BFU-E) compared to cells cultured in medium alone. After culture in IL-4, a limited increase in CFU-granulocyte (CFU-G) and BFU-E is seen, whereas CFU-G, CFU-M, and BFU-E are increased after culture in IL-4 plus IFN-gamma. We further investigated the functional properties of the CD34+CD38++ cells generated in the presence of IFN-gamma. This cell population is highly enriched for BFU-E but partially depleted of CFU-M. Most of the CFU-M were found in the CD34+CD38+/-(CD34+CD38- and CD34+CD38+ cells) population. FAU - Snoeck, H W AU - Snoeck HW AD - Laboratory of Experimental Hematology, University of Antwerp (UIA), Belgium. FAU - Lardon, F AU - Lardon F FAU - Lenjou, M AU - Lenjou M FAU - Nys, G AU - Nys G FAU - Van Bockstaele, D R AU - Van Bockstaele DR FAU - Peetermans, M E AU - Peetermans ME LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - Exp Hematol JT - Experimental hematology JID - 0402313 RN - 0 (Antigens, CD) RN - 0 (Antigens, CD34) RN - 0 (Antigens, Differentiation) RN - 0 (HLA-DR Antigens) RN - 0 (Membrane Glycoproteins) RN - 0 (Recombinant Proteins) RN - 207137-56-2 (Interleukin-4) RN - 82115-62-6 (Interferon-gamma) RN - EC 3.2.2.5 (ADP-ribosyl Cyclase) RN - EC 3.2.2.5 (CD38 protein, human) RN - EC 3.2.2.6 (ADP-ribosyl Cyclase 1) SB - IM MH - ADP-ribosyl Cyclase MH - ADP-ribosyl Cyclase 1 MH - Antigens, CD/*analysis MH - Antigens, CD34 MH - Antigens, Differentiation/*biosynthesis MH - Cells, Cultured MH - Clone Cells MH - Colony-Forming Units Assay MH - HLA-DR Antigens/*biosynthesis MH - Hematopoietic Stem Cells/cytology/drug effects/*immunology MH - Humans MH - Interferon-gamma/*pharmacology MH - Interleukin-4/*pharmacology MH - Membrane Glycoproteins MH - Recombinant Proteins/pharmacology EDAT- 1993/10/01 00:00 MHDA- 1993/10/01 00:01 CRDT- 1993/10/01 00:00 PHST- 1993/10/01 00:00 [pubmed] PHST- 1993/10/01 00:01 [medline] PHST- 1993/10/01 00:00 [entrez] PST - ppublish SO - Exp Hematol. 1993 Oct;21(11):1480-6.