| First Author | Lee CW | Year | 2018 |
| Journal | PLoS One | Volume | 13 |
| Issue | 10 | Pages | e0204942 |
| PubMed ID | 30286140 | Mgi Jnum | J:270219 |
| Mgi Id | MGI:6203414 | Doi | 10.1371/journal.pone.0204942 |
| Citation | Lee CW, et al. (2018) miR-125b regulates chemotaxis and survival of bone marrow derived granulocytes in vitro and in vivo. PLoS One 13(10):e0204942 |
| abstractText | The evolutionary conserved miR-125b is highly expressed in hematopoietic stem cells (HSC) enhancing self-renewal and survival. Accordingly, over-expression of miR-125b in HSC may induce myeloproliferative neoplasms and leukemia with long latency. During hematopoietic cell maturation miR-125b expression decreases, and the function of miR-125b in mature granulocytes is not yet known. We here use transplantation of miR-125b over-expressing HSC into syngeneic hosts to generate and analyse miR-125b over-expressing granulocytes. Under steady state conditions, miR-125b over-expression inhibits granulocytic chemotaxis and LPS- but not PMA- and TNFalpha- induced cell death. Inflammatory signals modulate the effects of miR-125b over-expression as demonstrated in a sterile peritonitis and a polymicrobial sepsis model. In particular, survival of mice with miR-125b over-expressing granulocytes is significantly reduced as compared to controls in the polymicrobial sepsis model. These data demonstrate inflammation dependent effects of miR-125b in granulocytes and may point to therapeutic intervention strategies in the future. |
