A novel telomerase activator suppresses lung damage in a murine model of idiopathic pulmonary fibrosis.
A novel telomerase activator suppresses lung damage in a murine model of idiopathic pulmonary fibrosis.
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一种新型的端粒酶激活剂在特发性肺纤维化的鼠模型中抑制肺损伤。
DOI:
10.1371/journal.pone.0058423
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发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
Allsopp R
中科院分区:
文献类型:
--
作者:
Le Saux CJ;Davy P;Brampton C;Ahuja SS;Fauce S;Shivshankar P;Nguyen H;Ramaseshan M;Tressler R;Pirot Z;Harley CB;Allsopp R
The emergence of diseases associated with telomere dysfunction, including AIDS, aplastic anemia and pulmonary fibrosis, has bolstered interest in telomerase activators. We report identification of a new small molecule activator, GRN510, with activity ex vivo and in vivo. Using a novel mouse model, we tested the potential of GRN510 to limit fibrosis induced by bleomycin in mTERT heterozygous mice. Treatment with GRN510 at 10 mg/kg/day activated telomerase 2–4 fold both in hematopoietic progenitors ex vivo and in bone marrow and lung tissue in vivo, respectively. Telomerase activation was countered by co-treatment with Imetelstat (GRN163L), a potent telomerase inhibitor. In this model of bleomycin-induced fibrosis, treatment with GRN510 suppressed the development of fibrosis and accumulation of senescent cells in the lung via a mechanism dependent upon telomerase activation. Treatment of small airway epithelial cells (SAEC) or lung fibroblasts ex vivo with GRN510 revealed telomerase activating and replicative lifespan promoting effects only in the SAEC, suggesting that the mechanism accounting for the protective effects of GRN510 against induced lung fibrosis involves specific types of lung cells. Together, these results support the use of small molecule activators of telomerase in therapies to treat idiopathic pulmonary fibrosis.
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DOI:
10.1016/0921-8734(91)90018-7
发表时间:
1991-03-01
期刊:
MUTATION RESEARCH
影响因子:
--
作者:
HARLEY, CB
通讯作者:
HARLEY, CB
DOI:
10.1152/ajplung.00089.2004
发表时间:
2005-01-01
影响因子:
4.9
作者:
Fust, A;LeBellego, F;Ludwig, MS
通讯作者:
Ludwig, MS
DOI:
10.1165/ajrcmb.26.5.4668
发表时间:
2002-05-01
影响因子:
6.4
作者:
Liu, TJ;Nozaki, Y;Phan, SH
通讯作者:
Phan, SH
影响因子:
24.3
作者:
Fridlender, Z. G.;Cohen, P. Y.;Breuer, R.
通讯作者:
Breuer, R.
DOI:
10.1165/rcmb.2005-0252oc
发表时间:
2006-05-01
影响因子:
6.4
作者:
Liu, T;Hu, B;Phan, SH
通讯作者:
Phan, SH