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High Throughput Microinjections of Sea Urchin Zygotes
Published on: January 21, 2014
Effect of 1,3;1,6-beta-D-glucans on developing sea urchin embryos
Marina I Kiseleva1, Larissa A Balabanova, Valery A Rasskazov
1Laboratory of Enzymatic Chemistry, Pacific Institute of Bioorganic Chemistry, Far-Eastern Branch of the Academy of Sciences, Vladivostok, prospect 100-letya Vladivostoka, 159, Russian Federation.
Marine Biotechnology (New York, N.Y.)
|February 22, 2008
Summary
Specific beta-D-glucans (1,3;1,6-beta-D-glucans) significantly enhanced sea urchin embryo survival. These compounds, particularly those between 6-10 kDa, show promise as developmental stimulants.
Area of Science:
- Marine Biology
- Developmental Biology
- Biochemistry
Background:
- Marine invertebrates like sea urchins are crucial models for developmental studies.
- Beta-glucans are known for their biological activities, including immunomodulation.
- Understanding factors that positively influence embryonic development is vital for marine conservation and research.
Purpose of the Study:
- To screen 1,3;1,6-beta-D-glucooligo- and polysaccharides as potential positive stimulants for developing sea urchin embryos.
- To identify specific structural characteristics of beta-glucans that modulate sea urchin embryonic development.
- To evaluate the impact of these compounds on sea urchin embryo survival rates.
Main Methods:
- Exposure of developing sea urchin (Strongylocentrotus intermedius) embryos to various 1,3;1,6-beta-D-glucans with differing molecular masses (1-10 kDa) and beta-1,6-linked glucose content (10-25%).
- Assessment of developmental modulation and survival rates in treated embryos compared to control groups.
- Determination of optimal molecular mass ranges and concentrations for observed effects.
Main Results:
- 1,3;1,6-beta-D-glucans with molecular masses between 6-10 kDa and at concentrations of 0.05-0.25 mg/ml exhibited the most significant modulator effects.
- These specific beta-glucans increased sea urchin embryo survival by up to 2.5-fold compared to controls.
- The study identified a dose- and size-dependent effect of beta-glucans on embryonic development.
Conclusions:
- Specific 1,3;1,6-beta-D-glucans act as potent positive modulators of sea urchin embryonic development.
- The optimal molecular mass for these beneficial effects appears to be in the 6-10 kDa range.
- These findings highlight the potential of certain beta-glucans as developmental stimulants in marine organisms.
