Magnetic Alignment of Cells and Formation of Chromatin Crystalline Auto-fluorescent Structures during Concentrating Processes(Research Report,The 21st Symposium on Life Information Science)
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概要
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In this study we realized modeling of the DNA- and chromatin concentrating processes occurring under physiological stresses in organism. The terrestrial magnetic field could generate a gradient field with the characteristic parameter (H・gradH) 〜 (10^3-10^5) Oe^2/cm near ferritin (or magnetite, and FeS) clusters in tissues. Such conditions were realized to observe magnetic movements of cells, nuclei, chromatin particles, and DNA containing granules in gradient magnetic separation procedure. The chromatin particle concentration in gradient fields, and chromatin condensation under an apoptosis led to the formation of liquid-crystalline and auto-fluorescent structures (mesophases). The intensive auto-fluorescence of formed tubular mesophases was revealed after the 24h-exposure in a weak gradient magnetic field. The revealed auto-fluorescent tubular mesophases formed from chromatin particles; being DNA liquid-crystalline phases, they have the semiconductor properties, and could, possibly, play a role in the acupuncture mechanism. The phenomena of magnetic alignment of micro-particles were studied using a polarization microscopy in reflected, scattered, transmitted light. Concentration phase transitions in nucleoprotein aggregates formed from DNA-granular suspension in HGMF led to the appearance of birefringence optical anisotropic structures and magnetic susceptibility anisotropy along the appearant optical axis directed along the diamagnetic gradient of the magnetic system. Nucleoprotein granules separated from cultivated connective tissue formed various chromatin mesophases and chiral supra-molecular structures. The magnetic pressure of 10^6-10^7 Pa generated by gradient magnetic fields to cause diamagnetic compression of chromatin particles in mammalian tissue during apoptosis was found to promote liquid-crystalline phase transformations from lamellar bilayers, tubes, and hexagonal cylinders into chiral and screw-like supramolecular structures. The modeling of self-assembling processes during stresses showed the liquid-crystalline phase transitions for chromatin particles isolated from chicken nucleated red blood cells, mammalian nucleoproteins, and DNA packing nucleosome nano-particles.
- 国際生命情報科学会の論文
- 2006-03-01
著者
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Soh Kwang-Sup
Biomedical Physics Lab., School of Physics, Seoul National University
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Soh Kwang-sup
Biomedical Physics Lab. School Of Physics Seoul National University
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NORINA Svetlana
Biomedical Physics Laboratory, School of Physics, Seoul National University
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Norina Svetlana
Biomedical Physics Lab. School Of Physics Seoul National University:biomagnetism Lab. Physics Dept.
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