Cyclosporin H (CsH), a specific inhibitor of FPR1, inhibited lung inflammation in the ALI models. CsH significantly attenuated MTDs or NFP-induced inflammatory lung injury and activation of MAPK and AKT pathways. Cyclosporin H is a viral transduction enhancer which increases lentiviral transduction up to 10-fold in human cord blood-derived hematopoietic stem and progenitor cells (HSPCs). When combined with Rapamycin or Prostaglandin E2 Cyclosporin H displays an additive effect. Cyclosporin H lacks immunosuppressant activity of Cyclosporin A.