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Actinomycetes for Marine Drug Discovery Isolated from Mangrove Soils and Plants in China

Lookup NU author(s): Professor Michael Goodfellow



The mangrove ecosystem is a largely unexplored source for actinomycetes with the potential to produce biologically active secondary metabolites. Consequently, we set out to isolate, characterize and screen actinomycetes from soil and plant material collected from eight mangrove sites in China. Over 2,000 actinomycetes were isolated and of these approximately 20%, 5%, and 10% inhibited the growth of Human Colon Tumor 116 cells, Candida albicans and Staphylococcus aureus, respectively, while 3% inhibited protein tyrosine phosphatase 1B (PTP1B), a protein related to diabetes. In addition, nine isolates inhibited aurora kinase A, an anti-cancer related protein, and three inhibited caspase 3, a protein related to neurodegenerative diseases. Representative bioactive isolates were characterized using genotypic and phenotypic procedures and classified to thirteen genera, notably to the genera Micromonospora and Streptomyces. Actinomycetes showing cytotoxic activity were assigned to seven genera whereas only Micromonospora and Streptomyces strains showed anti-PTP1B activity. We conclude that actinomycetes isolated from mangrove habitats are a potentially rich source for the discovery of anti-infection and anti-tumor compounds, and of agents for treating neurodegenerative diseases and diabetes.

Publication metadata

Author(s): Hong K, Gao AH, Xie QY, Gao H, Zhuang L, Lin HP, Yu HP, Li J, Yao XS, Goodfellow M, Ruan JS

Publication type: Article

Publication status: Published

Journal: Marine Drugs

Year: 2009

Volume: 7

Issue: 1

Pages: 24-44

Date deposited: 27/01/2011

ISSN (print): 1660-3397

ISSN (electronic):

Publisher: Molecular Diversity Preservation International


DOI: 10.3390/md7010024

Notes: Special issue: Marine Drugs Studies in China


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Funder referenceFunder name
2004DIB3J072Program for Social Profit, China Ministry of Science and Technology
2007AA09Z415The National High Technology Development Project (863)
NCET-05-0756Program of New Century Excellent Talents, China Ministry of Education
U0633008The National Natural Science Foundation of China, Guangdong Province Union Key Project