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Analysis of Minerals Produced by hFOB 1.19 and Saos-2 Cells Using Transmission Electron Microscopy with Energy Dispersive X-ray Microanalysis
Published on: June 24, 2018
Mineralización de la cáscara mediada por hemocitos en la ostra oriental.
Andrew S Mount1, A P Wheeler, Rajesh P Paradkar
1Department of Biological Sciences, Clemson University, Clemson, SC 29634, USA. mount@clemson.edu
Science (New York, N.Y.)
|April 10, 2004
Resumen
Los hemocitos de la ostra, un tipo de célula sanguínea, contienen cristales de carbonato de calcio y pueden contribuir directamente a la formación de la cáscara. Este hallazgo desafía la visión tradicional de la iniciación de cristales de caparazón en moluscos.
Área de la Ciencia:
- Biología marina Biología marina.
- La biomineralización es la biomineralización.
- Biología celular Biología celular.
Sus antecedentes:
- El crecimiento de los cristales de las conchas de los moluscos se atribuye tradicionalmente a las matrices orgánicas extracelulares.
- Los mecanismos celulares precisos que inician la biomineralización en las ostras siguen siendo incompletamente entendidos.
Objetivo del estudio:
- Investigar el papel potencial de los hemocitos de las ostras en la producción de cristales de concha.
- Desafiar y ampliar la comprensión actual de la biomineralización de la concha de los moluscos.
Principales métodos:
- Microscopía electrónica de barrido (SEM) para visualización celular y cristalina.
- Microanálisis de rayos X para la composición elemental de los hemocitos.
- Coloración fluorescente vital para rastrear los hemocitos durante la regeneración de la cáscara.
- Regeneración de la cáscara inducida experimentalmente en ostras.
Principales resultados:
- Se identificó una clase específica de hemocitos granulocíticos que contienen cristales de carbonato de calcio.
- La abundancia de estos hemocitos que contienen cristales aumentó significativamente después de la regeneración de la cáscara.
- Se observaron hemocitos en el frente de mineralización, liberando cristales para su posterior remodelación.
Conclusiones:
- Los hemocitos granulocíticos de la ostra están directamente involucrados en la producción de cristales de cáscara.
- Estas células aumentan o inician procesos de formación de cristales mediados por la matriz.
- Este descubrimiento ofrece nuevos conocimientos sobre los mecanismos celulares de la biomineralización en los moluscos.
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