AIM: In an effort to identify novel, small molecules which can affect the proliferation of lung cancer cells, F-01A, a polyether antibiotic isolated from the fermentation broth of Streptomyces was tested. METHOD: F-01...AIM: In an effort to identify novel, small molecules which can affect the proliferation of lung cancer cells, F-01A, a polyether antibiotic isolated from the fermentation broth of Streptomyces was tested. METHOD: F-01A was tested for its antitumor properties on the lung cancer cell line SPC-A-1, at six doses(0.1, 0.5, 1, 2.5, and 5 μmol·L-1), using various cellular assays. Cell viability was measured by the MTT assay, Hochest 33258 was used to study nuclear morphology; DNA ladder and the loss of mitochondrial membrane potential were also evaluated. RESULTS: F-01A induces apoptosis against SPC-A-1 cells in a dose-dependent manner. The IC50 is 0.65 μmol·L-1, and the inhibition at 5 μmol·L-1 is 87.89%. Further, JC-1 staining indicates F-01A could induce the loss of mitochondrial membrane potential, and the DNA fragment is evident. CONCLUSION: Mechanistic analysis showed that F-01A induced apoptosis of cancer cells probably in the mitochondrial pathway. The antitumor actions of F-01A involve activation of the apoptotic pathway against SPC-A-1 cells, and it may be valuable for further drug development.展开更多
The phytochemical investigation of the stems of Homalium stenophyllum afforded seven new phenolic glycosides(1-5 and 8-9)and two known compounds(6 and 7).Their structures were elucidated by comprehensive analyses of N...The phytochemical investigation of the stems of Homalium stenophyllum afforded seven new phenolic glycosides(1-5 and 8-9)and two known compounds(6 and 7).Their structures were elucidated by comprehensive analyses of NMR spectroscopic,mass spectrometric data and chemical hydrolysis.Additionally,their anti-inflammatory activities against the NO production in LPS-induced macrophages were evaluated.展开更多
基金supported by the National Nature Science Foundation of China(Nos.31360069,21162009)the Program for New Century Excellent Talents in University(No.NCET-08-0656)
文摘AIM: In an effort to identify novel, small molecules which can affect the proliferation of lung cancer cells, F-01A, a polyether antibiotic isolated from the fermentation broth of Streptomyces was tested. METHOD: F-01A was tested for its antitumor properties on the lung cancer cell line SPC-A-1, at six doses(0.1, 0.5, 1, 2.5, and 5 μmol·L-1), using various cellular assays. Cell viability was measured by the MTT assay, Hochest 33258 was used to study nuclear morphology; DNA ladder and the loss of mitochondrial membrane potential were also evaluated. RESULTS: F-01A induces apoptosis against SPC-A-1 cells in a dose-dependent manner. The IC50 is 0.65 μmol·L-1, and the inhibition at 5 μmol·L-1 is 87.89%. Further, JC-1 staining indicates F-01A could induce the loss of mitochondrial membrane potential, and the DNA fragment is evident. CONCLUSION: Mechanistic analysis showed that F-01A induced apoptosis of cancer cells probably in the mitochondrial pathway. The antitumor actions of F-01A involve activation of the apoptotic pathway against SPC-A-1 cells, and it may be valuable for further drug development.
基金supported by the National Natural Science Foundation of China(Nos.21362009,81360478 and 21302181)International S&T cooperation Program of China(ISTCP)(No.2014DFA40850)Hainan Special Project for TCM Modernization(No.2015ZY19)。
文摘The phytochemical investigation of the stems of Homalium stenophyllum afforded seven new phenolic glycosides(1-5 and 8-9)and two known compounds(6 and 7).Their structures were elucidated by comprehensive analyses of NMR spectroscopic,mass spectrometric data and chemical hydrolysis.Additionally,their anti-inflammatory activities against the NO production in LPS-induced macrophages were evaluated.
