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Mar. Drugs 2017, 15(6), 152; doi:10.3390/md15060152

Collagen from the Marine Sponges Axinella cannabina and Suberites carnosus: Isolation and Morphological, Biochemical, and Biophysical Characterization

1
Department of Pharmacognosy and Chemistry of Natural Products, Faculty of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, Athens 15771, Greece
2
Institute of Nanosciences and Nanotechnology, NCSR “Demokritos”, Aghia Paraskevi 15310, Attiki, Greece
3
Department of Ichthyology and Aquatic Environment, School of Agricultural Sciences, University of Thessaly, Fytoko Str., Nea Ionia 38445, Magnesia, Greece
*
Author to whom correspondence should be addressed.
Received: 22 April 2017 / Revised: 22 April 2017 / Accepted: 25 May 2017 / Published: 29 May 2017
(This article belongs to the Special Issue Collagen from Marine Biological Source and Medical Applications)
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Abstract

In search of alternative and safer sources of collagen for biomedical applications, the marine demosponges Axinella cannabina and Suberites carnosus, collected from the Aegean and the Ionian Seas, respectively, were comparatively studied for their insoluble collagen, intercellular collagen, and spongin-like collagen content. The isolated collagenous materials were morphologically, physicochemically, and biophysically characterized. Using scanning electron microscopy and transmission electron microscopy the fibrous morphology of the isolated collagens was confirmed, whereas the amino acid analysis, in conjunction with infrared spectroscopy studies, verified the characteristic for the collagen amino acid profile and its secondary structure. Furthermore, the isoelectric point and thermal behavior were determined by titration and differential scanning calorimetry, in combination with circular dichroism spectroscopic studies, respectively. View Full-Text
Keywords: Axinella cannabina; Suberites carnosus; sponges; marine collagen Axinella cannabina; Suberites carnosus; sponges; marine collagen
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Tziveleka, L.-A.; Ioannou, E.; Tsiourvas, D.; Berillis, P.; Foufa, E.; Roussis, V. Collagen from the Marine Sponges Axinella cannabina and Suberites carnosus: Isolation and Morphological, Biochemical, and Biophysical Characterization. Mar. Drugs 2017, 15, 152.

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