Poster

9月24日（木）、Prof. Scott I. Simonによるセミナーを開催しました。

【ABSTRACT】
The most frequent cause of non-healing skin wounds is due to Staphylococcus aureus (SA) infections. Polymorphonuclear (PMN) leukocytes are critical in the innate immune response against pathogens. In particular, PMN recruitment and abscess formation is a hallmark of these infections and is required for bacterial clearance. Recent published data from our laboratory indicates that strategic manipulation of the inflammatory response of polymorphonuclear leukocytes (PMN) at the site of a cutaneous wound can suppress infection and improve the efficiency of non-scar healing. These studies employed non-invasive whole animal fluorescence imaging of genetically tagged EGFP-PMN mice, which provides a real-time readout of the dynamic changes in PMN recruitment and lifetime, SA burden, and wound closure. We propose to investigate three distinct mechanisms that act in concert to recruit PMN for host defense in SA-infected tissue, including:(1) a robust and sustained mobilization of PMN from the bone marrow, (2) a prolonged in vivo survival of PMN within the abscess, and (3) trafficking of ckit+ hematopoietic stem and progenitor cells (HSPC) that proliferate ckit+ and differentiate into mature PMN within the wound in a TLR2 dependent manner. In this presentation I will discuss host innate immune strategies that appear to tune PMN number and antibacterial activity to defeat antibiotic resistant SA infections of the skin.

日時	2015年9月24日（木）　2:00pm～3:00pm
講演者	Prof. Scott I. Simon／Biomedical Engineering, University of California Davis, USA
講演タイトル	"Engineering the innate immune response to cutaneous Staph-aureus infection"
会場	吹田キャンパス　IFReC研究棟2階　大会議室1
Host	Mikaël Martino（自然免疫学）