Antisense oligonucleotides to NF-κB improve survival in bleomycin-induced pneumopathy of the mouse

Xiao Ye Zhang, Sanae Shimura, Tohru Masuda, Hiroki Saitoh, Kunio Shirato

研究成果: Article査読

32 被引用数 (Scopus)

抄録

We examined the effect of antisense oligonucleotides to the p65 subunit of NF-κB on the survival of bleomycin (BLM)-induced pneumonitis in C57BL/6 mice (female, 8 wk of age, 17 to 20 g body weight). Fifty-three percent and all control mice died within 6 to 9 d after intravenous administration of 150 and 300 mg/kg BLM alone, respectively. The intravenous administration of the antisense oligonucleotides (900 μg/animal dissolved in 200 μl saline, 6 h before and 5 d after BLM administration) significantly improved the survival rate to 100 and 40% in 150- and 300-mg/kg-treated animals, respectively. The antisense oligonucleotides also significantly improved the loss of body weight, the increase in lung hydroxyproline, and histologic changes by BLM, whereas the antisense oligonudeotides themselves did not produce any significant changes in the behavior or lung histology. Both peripheral blood monocytes and alveolar macrophages were confirmed to contain large amounts of intracellular antisense oligonucleotides after BLM injection by FITC-labeled fluorescent microscopy. Further, Western blotting confirmed the inhibition of NF-κB in macrophages by the antisense oligonucleotides. These findings suggest that the antisense oligonucleotides are incorporated into activated alveolar macrophages and ameleriorate the lung injury and pneumonitis/fibrosis, thereby improving the survival of BLM-induced pneumopathy in mice.

本文言語English
ページ(範囲)1561-1568
ページ数8
ジャーナルAmerican journal of respiratory and critical care medicine
162
4 I
DOI
出版ステータスPublished - 2000
外部発表はい

ASJC Scopus subject areas

  • 呼吸器内科
  • 集中医療医学

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