オクニシ　カツヒデ   Okunishi Katsuhide   奥西　勝秀    所属   東邦大学  医学部 医学科    職種   教授
論文種別	原著
言語種別	英語
査読の有無	査読あり
表題	Intratracheal delivery of hepatocyte growth factor directly attenuates allergic airway inflammation in mice.
掲載誌名	正式名：International archives of allergy and immunology ISSNコード：1018-2438
掲載区分	国外
出版社	KARGER
巻・号・頁	149 Suppl 1,pp.14-20
著者・共著者	Katsuhide Okunishi,Oh Sasaki,Takahiro Okasora,Kazuyuki Nakagome,Mitsuru Imamura,Hiroaki Harada,Taku Matsumoto,Ryoichi Tanaka,Kazuhiko Yamamoto,Yasuhiko Tabata,Makoto Dohi
発行年月	2009
概要	Hepatocyte growth factor (HGF) has an important role in many biological events such as angiogenesis and cell proliferation, as well as anti-fibrotic and anti-apoptotic effects. In addition, we found that HGF suppresses antigen-induced immune responses in the airway by suppressing dendritic cell functions, using a HGF-producing plasmid vector. In the present study, we examined whether delivery of the HGF protein in the lung attenuates allergic airway inflammation in a mouse model. Generally, HGF is rapidly cleared from organs. So, to achieve the efficient delivery of HGF, we prepared a slow-releasing form by mounting recombinant human (rh) HGF protein in biodegradable gelatin hydrogels. BALB/c mice were immunized and then challenged with ovalbumin (OVA) to induce eosinophilic airway inflammation. Intratracheal delivery of a very small amount of gelatin-coupled rhHGF (0.3 microg) just once before the inhalation of OVA significantly suppressed eosinophilic airway inflammation. In addition, cytokine production in thoracic lymph nodes and the antigen-presenting capacity of lung CD11c+ cells were reduced. In contrast, delivery of 1.0 microg of rhHGF did not exhibit any significantly suppressive effect. These results suggest that the controlled release of rhHGF protein can suppress antigen-induced allergic immune responses in the lung. Therefore, HGF could be a novel therapeutic option for asthma.
DOI	10.1159/000210648
PMID	19494499