Abstract:
:At present there is no known effective pharmacological therapy for acute lung injury (ALI). Because keratinocyte growth factor (KGF) promotes epithelial cell growth, intratracheal administration of KGF has the possibility of restoring lung tissue integrity in injured lungs and improving patient outcomes. However, treatment using recombinant KGF protein is limited by its short effective duration. Thus, we investigated the effectiveness of intratracheal KGF gene transduction using adenoviral vector in ALI. We constructed an adenoviral vector expressing mouse KGF (mKGF), and 1.0 x 10(9 ) plaque-forming units of mKGF cDNA-expressing (Ad-KGF) and control (Ad-1w1) adenoviral vector was intratracheally instilled, using a MicroSprayer, into anesthetized BALB/c mice. Three days later, the mice were exposed to >90% oxygen for 72 hr, and the effect of KGF on hyperoxia-induced lung injury was examined. In the Ad-KGF group, KGF was strongly expressed in the airway epithelial cells, while peribronchiolar and alveolar inflammation caused by adenoviral vector instillation was minimal. The KGF overexpression not only induced proliferation of surfactant protein C-positive cuboidal cells, especially in the terminal bronchiolar and alveolar walls, but also prevented lung injury including intraalveolar exudation/hemorrhage, albumin permeability increase, and pulmonary edema. The arterial oxygen tension and the survival rate were significantly higher in the KGF-transfected group. These findings suggest that KGF gene transduction into the airway epithelium is a promising potential treatment for ALI.
journal_name
Hum Gene Therjournal_title
Human gene therapyauthors
Baba Y,Yazawa T,Kanegae Y,Sakamoto S,Saito I,Morimura N,Goto T,Yamada Y,Kurahashi Kdoi
10.1089/hum.2006.137subject
Has Abstractpub_date
2007-02-01 00:00:00pages
130-41issue
2eissn
1043-0342issn
1557-7422journal_volume
18pub_type
杂志文章abstract::Development of multidrug resistance (MDR) is the major obstacle to successful cancer chemotherapy. We have developed Daudi human lymphoma cells that are 20-fold more resistant than the parent cell line to vincristine (VCR) by infecting cells with pHaMDR1/A retroviral vector (Daudi/MDR20). Three DNA sequences of anti-M...
journal_title:Human gene therapy
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