• Title/Summary/Keyword: Dictyoceratida

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Two New Spongia species (Dictyoceratida: Spongiidae) from Korea

  • Kim, Hye-Ri;Sim, Chung-Ja
    • Animal cells and systems
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    • v.13 no.2
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    • pp.141-145
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    • 2009
  • Two new species of the family Spongiidae, Spongia (Heterofibria) cora/lina n. sp. and Spongia (Heterofibria) purpurea n. sp. are described. They were collected from Gageodo Island, Jeollanam-do, Korea. Spongia (H.) coral/ina n. sp. is closest to S. (H.) cristata Cook & Bergquist (2001) from New Zealand in skeletal features, but the new species differs from S. (H.) cristata by the arrangement of fibres and growth form. Spongia (H.) purpurea n. sp. closley resembles S. (H.) cristata, but the new species differs from New Zealand specimens by the arragement and thickness of pseudo-tertiary fibres.

New Species of Two Psammocinia Horny Sponges (Dictyoceratida: Irciniidae) from Korea (한국 모래해면 속 (망각해면 목: 가는실해면 과)의 2신종)

  • Chung Ja Sim;Kyung Jin Lee
    • Animal Systematics, Evolution and Diversity
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    • v.14 no.4
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    • pp.335-340
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    • 1998
  • Two new species of the family Irciniidae, Psammocinia wandoensis n.sp. and P.samyangensis n. sp., are described. They were collected from the South Sea, Korea. P. wandoensis n. sp. closely resembles P. rugosa(Lendenfed, 1889)from Australia in morphology, but new species differs from P. rugosa by the filaments. Though P. samyangensis n. sp. is very similar to P. jejuensis, but our species differs from P. Jejuensis by the fibre shape.

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Regulation of Bcl-2 Family and Cyclooxygenases by Furanoterpenoids Isolated from a Marine Sponge Swcotragus nt. in Human Lung Cancer A549 Cells. (인체폐암세포의 Bcl-2 family 및 cyclooxygenases의 발현에 미치는 해면동물 Sarcotragus sp. 유래 furanoterpenoids의 영향)

  • 최영현;최혜정;김남득;정지형
    • Journal of Life Science
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    • v.14 no.3
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    • pp.445-452
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    • 2004
  • We investigated the cytotoxic effects of seven furanoterpenoids 〔sarcotin A, epi-sarcotin A, ircinin-1, epi-sarcotrine B, sarcotin I, (8E, l3Z, 20Z)-strobilinin/(7E,l3Z, 20Z)-felixinin and (7E,12E,18R,20Z)-variabilin〕 isolated from the sponge Sarcotragus sp. (the order Dictyoceratida) on the growth of A549 human lung carcinoma cells. MTT data revealed that sarcotin A and (7E,12E,18R,20Z)-variabilin exhibited higher potencies on the anti-proliferative activities than the other compounds in A549 cells. The growth inhibition by treatment with compounds (especially epi-sarcotin A, ircinin-1 and epi-sarcotrine B) were associated with the induction of apoptotic cell death through the concentration-dependent increase of Bax/Bcl-2 ratio in a p53-dependent or independent pathway Additionally, epi-sarcotin A and ircinin-1 strongly inhibited the levels of cyclooxygenase (COX)-2 expression without alteration of COX-1. Taken together, the results suggest that the furanoterpenoids from the marine sponge have strong potentials as candidates for anti-cancer drugs.