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Title: | Purification and in vitro antioxidant activities of tellurium-containing phycobiliproteins from tellurium-enriched Spirulina platensis | Authors: | Yang, F Wong, KH Yang, Y Li, X Jiang, J Zheng, W Wu, H Chen, T |
Issue Date: | 2014 | Source: | Drug design, development and therapy, 2014, v. 8, p. 1789-1800 | Abstract: | Tellurium-containing phycocyanin (Te-PC) and allophycocyanin (Te-APC), two organic tellurium (Te) species, were purified from tellurium-enriched Spirulina platensis by a fast protein liquid chromatographic method. It was found that the incorporation of Te into the peptides enhanced the antioxidant activities of both phycobiliproteins. With fractionation by ammonium sulfate precipitation and hydroxylapatite chromatography, Te-PC and Te-APC could be effectively separated with high purity, and Te concentrations were 611.1 and 625.3 µg g-1 protein in Te-PC and Te-APC, respectively. The subunits in the proteins were identified by using MALDI-TOF-TOF mass spectrometry. Te incorporation enhanced the antioxidant activities of both phycobiliproteins, as examined by 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid assay. Moreover, Te-PC and Te-APC showed dose-dependent protection on erythrocytes against the water-soluble free radical initiator 2,2'-azo(2-asmidinopropane)dihydrochloride-induced hemolysis. In the hepatoprotective model, apoptotic cell death and nuclear condensation induced by tert-butyl hydroperoxide in HepG2 cells was significantly attenuated by Te-PC and Te-APC. Taken together, these results suggest that Te-PC and Te-APC are promising Te-containing proteins with application potential for treatment of diseases related to oxidative stress. | Keywords: | Allophycocyanin Antioxidant activity Phycocyanin Purification Tellurium |
Publisher: | Dove Medical Press | Journal: | Drug design, development and therapy | EISSN: | 1177-8881 | DOI: | 10.2147/DDDT.S62530 | Rights: | © 2014 Yang et al. This work is published by Dove Medical Press Limited, and licensed under Creative Commons Attribution – Non Commercial (unported, v3.0) License. The full terms of the License are available at http://creativecommons.org/licenses/by-nc/3.0/. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. Permissions beyond the scope of the License are administered by Dove Medical Press Limited. Information on how to request permission may be found at: http://www.dovepress.com/permissions.php The following publication Yang, F., Wong, K. -., Yang, Y., Li, X., Jiang, J., Zheng, W., . . . Chen, T. (2014). Purification and in vitro antioxidant activities of tellurium-containing phycobiliproteins from tellurium-enriched spirulina platensis. Drug Design, Development and Therapy, 8, 1789-1800 is available at https://dx.doi.org/10.2147/DDDT.S62530 |
Appears in Collections: | Journal/Magazine Article |
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