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CD34+DNAMbrightCXCR4+ CLP mobilized in chronic inflammation

ABSTRACT: During the course of many chronic inflammatory disorders, a persistent Natural Killer (NK) cell derangement and activation is observed. While increased cell turnover is expected in these cases, little is known about whether and how NK cell homeostatic balance and numbers are maintained by CD34+ progenitor cells. Accordingly, we studied peripheral blood progenitor cells in patients with chronic inflammatory disorders including HIV-1, HCV, TB, COPD and PAPA. Cytometric analysis revealed the presence of a so far unidentified CD34+CD226(DNAM-1)brightCXCR4+ cell population in all these conditions. Further, microarray and PCR analysis showed transcriptional signatures typical of common lymphocyte precursors. Culture of CD34+CD226brightCXCR4+ cells gave rise to NK cell progenies characterized by high expression of activating receptors and mature function. Importantly, in healthy donors CD34+CD226brightCXCR4+ cells reside in bone marrow but do not circulate in peripheral blood and are absent in umbilical cord blood. The proportion of CD34+CD226brightCXCR4+ PBMC were found to correlate with the degree of inflammation, and represent an indicator of lymphoid cell turnover/reconstitution during chronic inflammation. Identification of CD34+CD226brightCXCR4+ circulation offers a novel view of emergency recruitment of cell-precursors upgrade our understanding and monitoring of chronic inflammatory conditions, and provide new insight of intermediate stages of NK cell development.

ORGANISM(S): Homo sapiens

PROVIDER: GSE69557 | GEO | 2015/07/01

SECONDARY ACCESSION(S): PRJNA285952

REPOSITORIES: GEO

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CD34+DNAMbrightCXCR4+ CLP mobilized in chronic inflammation

Project description:During the course of many chronic inflammatory disorders, a persistent Natural Killer (NK) cell derangement and activation is observed. While increased cell turnover is expected in these cases, little is known about whether and how NK cell homeostatic balance and numbers are maintained by CD34+ progenitor cells. Accordingly, we studied peripheral blood progenitor cells in patients with chronic inflammatory disorders including HIV-1, HCV, TB, COPD and PAPA. Cytometric analysis revealed the presence of a so far unidentified CD34+CD226(DNAM-1)brightCXCR4+ cell population in all these conditions. Further, microarray and PCR analysis showed transcriptional signatures typical of common lymphocyte precursors. Culture of CD34+CD226brightCXCR4+ cells gave rise to NK cell progenies characterized by high expression of activating receptors and mature function. Importantly, in healthy donors CD34+CD226brightCXCR4+ cells reside in bone marrow but do not circulate in peripheral blood and are absent in umbilical cord blood. The proportion of CD34+CD226brightCXCR4+ PBMC were found to correlate with the degree of inflammation, and represent an indicator of lymphoid cell turnover/reconstitution during chronic inflammation. Identification of CD34+CD226brightCXCR4+ circulation offers a novel view of emergency recruitment of cell-precursors upgrade our understanding and monitoring of chronic inflammatory conditions, and provide new insight of intermediate stages of NK cell development. Four samples from CD34+ hematopoietic stem cells of healthy individuals (n=2) and HIV-infected patients (n=2) were analyzed using GeneChip Human Gene 1.0 ST Arrays.

2015-07-01 | E-GEOD-69557 | biostudies-arrayexpress

Gene expression profiling of NKG2C+ NK cells generated from inflammatory CD34+DNAM-1brCXCR4+ and Lin-CD34- CD16+CD56- blood precursors

Project description:There is limited knowledge on the origin and development of the ample spectrum of human NK cells, particularly of specialized NK subsets. Here, we characterized the NK cell progeny of CD34+DNAM-1bright CXCR4+ precursors that reside in healthy bone marrow and circulate in the peripheral blood (PB) of patients with chronic infections/inflammation. including HIV, HCV or HCMV reactivation after HSC transplantation. Unlike conventional CD34+ precursors they rapidly differentiated in vitro into cytotoxic, IFNγ-secreting CD94/NKG2C+KIR+CD57+ maturing NK cell progenies with HCMV-inhibiting activity. Progeny characterization led also to identification of an additional new PB Lin-CD56-CD16+ precursor giving rise to the same CD94/NKG2C+KIR+CD57+ maturing NK cell progenies. Microarray analysis of NK cell progenies revealed a signature compatible with maturing adaptive NK cells. In vivo circulation of multiple common lymphocyte precursors with rapid development to NKG2C+ NK cell progeny is steadily occurring and may thus be a crucial resource for the prompt control of HCMV. We used microarray to compare the transcriptional profiles of human NKG2C+ NK cells derived from i) CD34+DNAM1brightCXCR4+ precursors, ii) Lin-CD34-CD16+CD56- precursors, iii) peripheral blood.

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Gene expression profiling of NKG2C+ NK cells generated from inflammatory CD34+DNAM-1brCXCR4+ and Lin-CD34- CD16+CD56- blood precursors

Project description:Gene expression profiling of NKG2C+ NK cells generated from inflammatory CD34+DNAM-1brCXCR4+ and Lin-CD34- CD16+CD56- blood precursors

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Human Innate Lymphoid Cell Precursors Express CD48 that Modulates ILC Differentiation through 2B4 Signaling

Project description:Innate lymphoid cells (ILCs) develop from common lymphoid progenitors (CLP), which further differentiate into the common ILC progenitor (CILP) that can give rise to both ILCs and NK cells. Murine ILC intermediates have recently been characterized, but the human counterparts and their developmental trajectories have not yet been identified, largely due to the lack of homologous surface receptors in both organisms. Here, we show that human CILPs (CD34+CD117+α4β7+Lin-) acquire CD48 and CD52, which define NK progenitors (NKPs) and innate lymphoid cell precursors (ILCPs). Two distinct NK cell subsets were generated in vitro from CD34+CD117+α4β7+Lin-CD48-CD52+ and CD34+CD117+α4β7+Lin-CD48+CD52+ NKPs, respectively. Independent of NKPs, ILCPs exist in the CD34+CD117+α4β7+Lin-CD48+CD52+ subset and give rise to ILC1s, ILC2s and NCR+ ILC3s, whereas CD34+CD117+α4β7+Lin-CD48+CD52- ILCPs give rise to a distinct subset of ILC3s that have lymphoid tissue inducer (LTi)-like properties. Additionally, CD48 expressing CD34+CD117+α4β7+Lin- precursors give rise to tissue-associated ILCs in vivo. We also observed that the interaction of 2B4 with CD48 induced differentiation of ILC2s, and together these findings show that expression of CD48 by human ILCPs modulates ILC differentiation.

2020-11-20 | GSE160009 | GEO

Expression data from human CD34+ HPC subpopulations isolated from umbilical cord blood (Haddad et al. Blood 104:3918, 2004)

Project description:We used microarrays to analyze the gene expression profile of CD34+CD45RA+CD7+, CD34+CD45RA+CD10+CD19- and CD34+CD45+CD7-CD10-CD19- HPCs isolated from umbilical cord blood CD34+CD45RA+CD7+(CD10-) and CD34+CD45RA+CD10+(CD7-CD19-) HPCs correspond respectively to prothymocytes and early pre-proB precursors. CD34+CD45RA+CD7-CD10-CD19- HPCs correspond to lympho-granulo-macrophagic precursors

2011-05-25 | GSE29522 | GEO

Quantitative Analysis of different NK cell types Transcriptomes

Project description:We compared transcriptome of different types of NK cells including obtained from peripheral Blood (PB-NK), derived from human ES cell, H9-NK, derived from human iPSC (iPSC-NK), derived from CD34+ cells from umbilical cord blood (UCB-NK), NKcell line (NK92) and 3 cancer cell lines (K562, Raji and Jurkat). When comparing the similarity of the NK cells populations by the number of differentially expressed genes to iPSC NK cells, there were the fewest differentially expressed genes in the comparison with the UCB NK cells, followed by the PB-NK cells, followed by the H9 embryonic stem cell derived-NK cells and lastly by the NK92 cell line.

2020-10-12 | GSE150806 | GEO

Proteomic characterization of CD56posCD57 NK cell subsets

Project description:NK cells are lymphocytes that provide a first defense against viral infections and cancer. They act (i) cytotoxic by killing virus-infected and tumorigenic cells and (ii) immune regulatory by releasing cytokines and chemokines. These innate immune cells are commonly further classified as CD56bright and CD56dim NK cells. Former studies confirmed immune regulatory CD56bright NK cells as progenitors of cytotoxic CD56dim NK cells. CD57 was previously described as T cell marker for senescence and terminal differentiation. Recent studies detected CD57+ and CD57- NK cells among the CD56dim NK cell population and suggested a fully mature developmental status for CD57+ NK cells. The recent NK cell maturation model includes CD34+ hematopoietic stem cells (HSC), which develop into CD56bright NK cells, later into CD56dimCD57- and finally into terminally maturated CD56dimCD57+ (1) (2) (3). The molecular mechanisms of human NK cell differentiation and maturation remain unknown to this date. We performed for the first time a proteomic analysis of these distinct developmental stages of human primary NK cells, isolated from overall 10 healthy human blood donors. CD56bright NK cells versusCD56dim and CD56dimCD57- versus CD56dimCD57+ NK cells were analyzed by using quantitative peptide sequencing, which revealed individual protein signatures (3400 proteins) of these different NK cell developmental stages. Notably, our data support the current NK cell differentiation model by highlighting both strong distinctions between CD56dim/bright NK cells and close relationships between CD57+/- NK cells on the proteomic level. Among the most prominent and conserved regulated proteins, we detected myosin IIa, Calvasculin and Calcyclin with very similar expression patterns. We investigated their sub-cellular localization and observed specific recruitment- and accumulation-events at the NK cell immunological synapse (NKIS) after NK activation.

2013-01-23 | PRD000666 | Pride

Expression data from human CD34+ HPC subpopulations isolated from umbilical cord blood (Haddad et al. Blood 104:3918, 2004)

2011-05-25 | E-GEOD-29522 | biostudies-arrayexpress

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