Development of an analytical HPLC methodology to study the effects of thymosin β4 on actin in sputum of cystic fibrosis patients
A high‐performance liquid chromatography (HPLC) methodology is presented. Using bovine and rabbit F‐ and G‐actin, this methodology results in both fractions as being well‐resolved peaks, which were confirmed by dot blot immunoassay and fluorescence microscopy. F‐ and G‐actin were incubated with thym...
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| Published in: | Annals of the New York Academy of Sciences Vol. 1270; no. 1; pp. 86 - 92 |
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01-10-2012
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| Abstract | A high‐performance liquid chromatography (HPLC) methodology is presented. Using bovine and rabbit F‐ and G‐actin, this methodology results in both fractions as being well‐resolved peaks, which were confirmed by dot blot immunoassay and fluorescence microscopy. F‐ and G‐actin were incubated with thymosin β4 (Tβ4) and DNase and then analyzed by HPLC, which indicated that Tβ4 and DNase inhibit G‐actin polymerization and that Tβ4 depolymerizes F‐actin in a dose‐ and time‐dependent manner. The F‐ and G‐actin content in sputum from healthy controls and cystic fibrosis (CF) patients were measured by HPLC before and after incubation with Tβ4, DNase, and gelsolin. These data demonstrate higher quantities of F‐actin in the sputum of CF patients compared to healthy individuals, and also demonstrate a significantly increased F/G‐actin ratio in CF sputum. Further, Tβ4, DNase, and gelsolin each increase the depolymerization of F‐actin in CF sputum in a dose‐dependent fashion that is additive when these agents are combined. |
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| AbstractList | A high-performance liquid chromatography (HPLC) methodology is presented. Using bovine and rabbit F- and G-actin, this methodology results in both fractions as being well-resolved peaks, which were confirmed by dot blot immunoassay and fluorescence microscopy. F- and G-actin were incubated with thymosin β4 (Tβ4) and DNase and then analyzed by HPLC, which indicated that Tβ4 and DNase inhibit G-actin polymerization and that Tβ4 depolymerizes F-actin in a dose- and time-dependent manner. The F- and G-actin content in sputum from healthy controls and cystic fibrosis (CF) patients were measured by HPLC before and after incubation with Tβ4, DNase, and gelsolin. These data demonstrate higher quantities of F-actin in the sputum of CF patients compared to healthy individuals, and also demonstrate a significantly increased F/G-actin ratio in CF sputum. Further, Tβ4, DNase, and gelsolin each increase the depolymerization of F-actin in CF sputum in a dose-dependent fashion that is additive when these agents are combined. |
| Author | Goldstein, Allan L. Badamchian, Mahnaz Damavandy, Ali A. |
| Author_xml | – sequence: 1 givenname: Mahnaz surname: Badamchian fullname: Badamchian, Mahnaz organization: Department of Biochemistry and Molecular Biology, The George Washington University School of Medicine and Health Sciences, Washington DC – sequence: 2 givenname: Ali A. surname: Damavandy fullname: Damavandy, Ali A. organization: Department of Internal Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts – sequence: 3 givenname: Allan L. surname: Goldstein fullname: Goldstein, Allan L. organization: Department of Biochemistry and Molecular Biology, The George Washington University School of Medicine and Health Sciences, Washington DC |
| BackLink | https://www.ncbi.nlm.nih.gov/pubmed/23050822$$D View this record in MEDLINE/PubMed |
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| Cites_doi | 10.1146/annurev.bi.55.070186.005011 10.1378/chest.130.5.1433 10.1016/S0192-0561(97)00005-2 10.1016/S1567-5769(03)00024-9 10.1073/pnas.81.12.3680 10.1073/pnas.78.2.1162 10.1196/annals.1415.006 10.1517/14712598.2012.634793 10.1073/pnas.89.10.4678 10.4187/002013209790983269 10.1126/science.8310295 10.1126/science.8493552 |
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| SubjectTerms | actin Actins - metabolism Chromatography, High Pressure Liquid - methods cystic fibrosis Cystic Fibrosis - metabolism HPLC Humans sputum Sputum - chemistry Thymosin - metabolism thymosin β4 |
| Title | Development of an analytical HPLC methodology to study the effects of thymosin β4 on actin in sputum of cystic fibrosis patients |
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