• Animal cells and systems
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• v.9 no.4
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• pp.229-238
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• 2005

Spongicola tropicanus, a new genus and species of the family Eunicicolidae, and Asterocheres brevisurculus, a new species of the family Asterocheridae, are described as copepods associated with the sponge Phyllospongia foliascens (Pallas) from the Moluccas. Spongicola is the second genus of the family and may be characterized by a two-segmented prosome, the absence of leg 3, and the presence of leg 5. Asterocheres brevisurculus may be charecterized by one-segmented mandibular palp, short oral siphon, and 19-segmented female antennule.

• Animal cells and systems
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• v.2 no.2
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• pp.203-208
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• 1998

A new species of harpacticoid copepod Alteuthoides affinis associated with the sponge Callyspongia elegans (Thiele) was collected from offshore waters of Cheju Island, Korea, and is described with illustrations. In this genus, only one species, A. kootare Hicks, has been known to occur in association with an hexacnellid sponge from New Zealand. The new species is similar to A. kootare in the general morphologies such as the shape of body, oral appendages, and thoraxic legs. However, it can be separated from A. kootare by the expanded genital double semite, P1 exopod bearing only one claw without reduced accessary nail, and acute rostrum.

• Animal cells and systems
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• v.7 no.1
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• pp.25-28
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• 2003

Two new species of the genus Stelletta (Astrophorida: Ancorinidae), S. spinulosa n. sp. and S. calyx n. sp., are described from the waters around Gageodo Island (Sohuksando) and Ulleungdo Island, Korea. S. spinulosa n. sp. is similar to S. crassispicula (Sollas, 1886) in the feature of entire animal, but differs from it in the shape of orthotriaene and the form and size of oxyasters. S. calyx n. sp. resembles to S. crater Dendy, 1924 in the shape of sponge, but the new species has four size categories of oxyaster whereas S. carter has no oxyaster.

• Animal Systematics, Evolution and Diversity
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• v.26 no.1
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• pp.75-78
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• 2010

A new marine sponge Cinachyrella unjinensis n. sp. has been collected from Jejudo Island in 2009. This new species is similar to C. kuekenthali (Uliczka, 1929) in the shape and composition of the spicules except for style. However, it differs from the latter by size of anatriaenes, protriaenes and microxeas.

• Animal cells and systems
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• v.9 no.1
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• pp.9-11
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• 2005

A new species of the genus Smenospongia (Dictyoceratida, Thorectidae), S. coreana n. sp., is described from Gageodo Island, Korea. This new species is readily distinguished from the other species of Smenospongia by the un-lobated growth forms and un-crowded primary fibres. S. aurea and S. lamellata are no distinction between primary and secondary elements, but this species is easily distinguished from them. The matrix easily derived from the fibres. This species has five sesterterpenes, three scalaranetypes and two linear furanosesterterpenes, in chemical compounds.

• Journal of the Korean Magnetic Resonance Society
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• v.16 no.1
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• pp.1-10
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• 2012

A new scalaran class sesterterpenoid with five known ones was isolated from a marine sponge Smenospongia species collected from the Gageo island, Korea. Chemical structure of all of compounds was determined on the basis of a combination of extensive 1D and 2D NMR experiments and MS data. The new compound exhibited a new functional group on a common scalaran sesterterpene skeleton, identified as 12-deacetoxy-23-deacetoxyscalarin. The compound 1 moderately showed the effect of the activation of AMP-activated protein kinase (AMPK) in L6 myoblast cell.

• Ocean and Polar Research
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• v.38 no.4
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• pp.287-294
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• 2016

Marine sponges have been a remarkably rich source of pharmacologically active and structurally diverse natural products. As a part of our continuing search for novel secondary metabolites of biomedical importance from marine invertebrate, we encountered the sponge Lipastrotethya sp. from Chuuk, Micronesia. The crude organic extract of this animal exhibited considerable cytotoxicity against the K562 cell line. Guided by the $^1H$ NMR analysis, flash chromatography of the crude extract followed by HPLC yielded a new triterpene glycoside, along with ten known saponins of the sarasinoside class. The structure of this new compound was determined by combined spectroscopic methods such as COSY, HSQC and HMBC experiment. Among these metabolites, six compounds exhibited moderate cytotoxicity against ACHN, MDA-MB-231, NCI-H23 and NUGC-3 cell lines.

• Natural Product Sciences
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• v.21 no.4
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• pp.289-292
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• 2015

Intensive chemical investigation of Korean marine sponge Spongia sp. has led to the isolation of two new scalaranes. The planar structures of the new compounds 1 and 2 were determined through 1D and 2D NMR spectral data analysis, while the relative stereochemistry of the compounds was determined based on the analysis of $^1H-^1H$ coupling constants and NOESY spectroscopic data. Compounds 1 and 2 did not display any significant biological activities on farnesoid X-activated receptor (FXR) in co-transfection assay.

• Animal cells and systems
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• v.8 no.3
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• pp.135-137
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• 2004

A taxonomic study on marine sponges was conducted with materials collected from Gageodo Island, Korea, from August 1999 to July 2001 by SCUBA diving. Among them, Phorbas gukhulensis n. sp. is new to science. Phorbas gukhulensis n. sp. is similar to P. fitictius Pulitzer-Finali from which it differs in spicule size and growth form.

• Animal cells and systems
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• v.7 no.3
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• pp.187-189
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• 2003

A new sponge species of the genus Hymeniacidon (family Halichondriidae) from Munsum, Jeju Island, Korea is described. This species is similar to H. sinapium in spicule size, but the color, oscules, external surface and arrangement of the spicules are considerably different. This species is bright yellow in live, and retains multiple oscules and a plumose bundle of styles in the subectosomal region.