scholarly journals Cytotoxic activity of marine sponge extracts from the sub-Antarctic Islands and the Southern Ocean

2016 ◽  
Vol Volume 112 (Number 11/12) ◽  
Author(s):  
Elisabeth K. Olsen ◽  
Christopher K. de Cerf ◽  
Godwin A. Dziwornu ◽  
Eleonora Puccinelli ◽  
Isabelle J. Ansorge ◽  
...  
Keyword(s):  
Natural Products ◽  
Southern Ocean ◽  
Cytotoxic Activity ◽  
Marine Invertebrates ◽  
Cold Water ◽  
Research Effort ◽  
Benthic Invertebrate ◽  
Marine Sponges ◽  
Bioactive Natural Products ◽  
Prince Edward Islands

Abstract Over the past 50 years, marine invertebrates, especially sponges, have proven to be a valuable source of new and/or bioactive natural products that have the potential to be further developed as lead compounds for pharmaceutical applications. Although marine benthic invertebrate communities occurring off the coast of South Africa have been explored for their biomedicinal potential, the natural product investigation of marine sponges from the sub-Antarctic Islands in the Southern Ocean for the presence of bioactive secondary metabolites has been relatively unexplored thus far. We report here the results for the biological screening of both aqueous and organic extracts prepared from nine specimens of eight species of marine sponges, collected from around Marion Island and the Prince Edward Islands in the Southern Ocean, for their cytotoxic activity against three cancer cell lines. The results obtained through this multidisciplinary collaborative research effort by exclusively South African institutions has provided an exciting opportunity to discover cytotoxic compounds from sub-Antarctic sponges, whilst contributing to our understanding of the biodiversity and geographic distributions of these cold-water invertebrates. Therefore, we acknowledge here the various contributions of the diverse scientific disciplines that played a pivotal role in providing the necessary platform for the future natural products chemistry investigation of these marine sponges from the sub- Antarctic Islands and the Southern Ocean.

Detection of pharmacologically active natural products using ecology. Selected examples from Indopacific marine invertebrates and sponge-derived fungi

2003 ◽  
Vol 75 (2-3) ◽  
pp. 343-352 ◽  
Author(s):  
P. Proksch ◽  
R. Ebel ◽  
R. A. Edrada ◽  
P. Schupp ◽  
W. H. Lin ◽  
...  
Keyword(s):  
Natural Products ◽  
Marine Invertebrates ◽  
Marine Sponges ◽  
Bioactive Metabolites ◽  
Marine Biodiversity ◽  
Marine Microorganisms ◽  
Bioactive Constituents ◽  
Isolation And Identification ◽  
Bioactive Natural Products ◽  
Pharmacologically Active

This review article presents our group's recent research findings with regard to bioactive natural products from marine sponges and tunicates, as well as from sponge derived fungi. The organisms discussed originate in the Indopacific region, which has an exceptionally rich marine biodiversity. Major topics that are covered in our review include the chemical ecology of sponges, focusing on defense against fishes, as well as the isolation and identification of new bioactive constituents from sponges and tunicates. Sponge derived fungi are introduced as an emerging source for new bioactive metabolites, reflecting the currently growing interest in natural products from marine microorganisms.

scholarly journals New and bioactive natural products from an endophyte of Panax notoginseng

RSC Advances ◽  
2017 ◽  
Vol 7 (60) ◽  
pp. 38100-38109 ◽  
Author(s):  
Jun Xie ◽  
Ying-Ying Wu ◽  
Tian-Yuan Zhang ◽  
Meng-Yue Zhang ◽  
Wei-Wei Zhu ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Natural Products ◽  
Secondary Metabolites ◽  
Antiviral Activity ◽  
Cytotoxic Activity ◽  
Endophytic Fungi ◽  
Panax Notoginseng ◽  
Bioactive Natural Products

Secondary metabolites with cytotoxic activity, antiviral activity and antimicrobial activity from the endophytic fungi of Panax notoginseng.

scholarly journals Novel Natural Product Discovery from Marine Sponges and their Obligate Symbiotic Organisms

2014 ◽  
Author(s):  
Regina Monaco ◽  
Rena Quinlan
Keyword(s):  
Natural Products ◽  
Drug Discovery ◽  
Marine Invertebrates ◽  
Quinone Reductase ◽  
Marine Sponges ◽  
Bioactive Molecules ◽  
Channel Blockers ◽  
Terrestrial Plants ◽  
Technological Advances ◽  
Pharmacologically Active

Abstract: Discovery of novel natural products is an accepted method for the elucidation of pharmacologically active molecules and drug leads. Best known sources for such discovery have been terrestrial plants and microbes, accounting for about 85% of the approved natural products in pharmaceutical use (1), and about 60% of approved pharmaceuticals and new drug applications annually (2). Discovery in the marine environment has lagged due to the difficulty of exploration in this ecological niche. Exploration began in earnest in the 1950’s, after technological advances such as scuba diving allowed collection of marine organisms, primarily at a depth to about 15m. Natural products from filter feeding marine invertebrates and in particular, sponges, have proven to be a rich source of structurally unique pharmacologically active compounds, with over 16,000 molecules isolated thus far (3, 1) and a continuing pace of discovery at hundreds of novel bioactive molecules per year. All classes of pharmaceuticals have been represented in this discovery process, including antiprotazoals, pesticides, TGF-beta inhibitors, cationic channel blockers, anticancer, cytotoxic, antiviral, anti-inflammatory and antibacterial compounds. Important biosynthetic pathways found in sponges which give rise to these compounds include the terpenoid (4), fatty acid, polyketoid, quinone reductase, alkaloid, isoprenoid (5), and non-ribosomal protein synthase pathways. Keywords: natural products; marine sponges; drug discovery; terpenoids; carotenoids; polyketides; marine drug discovery

ChemInform Abstract: Bioactive Natural Products from Papua New Guinea Marine Sponges

ChemInform ◽  
2013 ◽  
Vol 44 (2) ◽  
pp. no-no
Author(s):  
Jeffrey C. Noro ◽  
John A. Kalaitzis ◽  
Brett A. Neilan
Keyword(s):  
Natural Products ◽  
Papua New Guinea ◽  
New Guinea ◽  
Marine Sponges ◽  
Bioactive Natural Products

Bioactive Natural Products from Papua New Guinea Marine Sponges

2012 ◽  
Vol 9 (10) ◽  
pp. 2077-2095 ◽  
Author(s):  
Jeffery C. Noro ◽  
John A. Kalaitzis ◽  
Brett A. Neilan
Keyword(s):  
Natural Products ◽  
Papua New Guinea ◽  
New Guinea ◽  
Marine Sponges ◽  
Bioactive Natural Products

scholarly journals Coral and Coral-Associated Microorganisms: A Prolific Source of Potential Bioactive Natural Products

Marine Drugs ◽  
2019 ◽  
Vol 17 (8) ◽  
pp. 468 ◽  
Author(s):  
Sang ◽  
Dat ◽  
Vinh ◽  
Cuong ◽  
Oanh ◽  
...  
Keyword(s):  
Natural Products ◽  
Bioactive Compounds ◽  
Marine Invertebrates ◽  
Present Review ◽  
Bioactive Natural Products ◽  
Wide Range ◽  
Anti Inflammatory

Marine invertebrates and their associated microorganisms are rich sources of bioactive compounds. Among them, coral and its associated microorganisms are promising providers of marine bioactive compounds. The present review provides an overview of bioactive compounds that are produced by corals and coral-associated microorganisms, covering the literature from 2010 to March 2019. Accordingly, 245 natural products that possess a wide range of potent bioactivities, such as anti-inflammatory, cytotoxic, antimicrobial, antivirus, and antifouling activities, among others, are described in this review.

scholarly journals The The colourful chemistry of South African latrunculid sponges

2019 ◽  
Vol 115 (5/6) ◽  
Author(s):  
Michael T. Davies-Coleman ◽  
Edith M. Antunes ◽  
Denzil R. Beukes ◽  
Toufiek Samaai
Keyword(s):  
Natural Products ◽  
South African ◽  
Marine Natural Products ◽  
Marine Invertebrates ◽  
Short Review ◽  
Marine Sponges ◽  
Organic Chemical ◽  
Sponge Tissue ◽  
Western Cape ◽  
Rich Diversity

Marine sponges – in common with many other sessile marine invertebrates seemingly devoid of obvious physical forms of defence against predators, e.g. spines or shells – are the sources of a diverse array of organic chemical compounds known as marine natural products or secondary metabolites. Recent research has indicated that the production of natural products via cellular secondary metabolic pathways in some sponge species may not occur within the sponge cells themselves, but rather in microbial endosymbionts which inhabit the surface and interstitial spaces within the sponge tissue. Regardless of their biosynthetic origin, the bioactivity, e.g. toxicity, of many of these marine natural products may be utilised by sponges as chemical feeding deterrents to discourage predation or to provide a chemical anti-fouling competitive edge in the intense competition for living space amongst filter-feeders on space-limited benthic reefs. Paradoxically, a small number of sponge natural products have serendipitously shown potential as new pharmaceuticals, e.g. novel anti-cancer drugs. Marine biodiscovery (or bioprospecting) is the search for new pharmaceuticals from marine organisms. Exploration of the taxonomy, natural products chemistry and biomedicinal potential of the rich diversity of South African latrunculid sponges (family Latrunculiidae), at Rhodes University, the South African Department of Environmental Affairs and the University of the Western Cape has continued unabated for over a quarter of a century as part of a collaborative marine biodiscovery programme. A short review of this multidisciplinary latrunculid sponge research is presented here.

Bioactive natural products from marine sponges and fungal endophytes

2010 ◽  
Vol 9 (4) ◽  
pp. 475-489 ◽  
Author(s):  
Peter Proksch ◽  
Annika Putz ◽  
Sofia Ortlepp ◽  
Julia Kjer ◽  
Mirko Bayer
Keyword(s):  
Natural Products ◽  
Fungal Endophytes ◽  
Marine Sponges ◽  
Bioactive Natural Products
Sign in / Sign up

Export Citation Format

Share Document