摘要:
A method for introducing a foreign matter into a cell, includes the steps of placing a small particle carrying a foreign matter at a part of a cell surface of a living cell, boring a hole in a cell wall and/or a cell membrane by irradiating and treating said part of the cell surface with a laser beam, and introducing the foreign matter into the living cell.
摘要:
A novel method for introduction of an exogenous substance or a physiologically active compound into cells is provided according to this invention. This method can realize introduction of an exogenous genetic substance or a physiologically active compound of large size with a large amount. Such substance is immobilized to beads of sphere fine particles having a particle size of 0.01 mm to 10 mm, and bio-active beads thus produced are introduced into cells. Bio-active beads comprising calcium alginate are particularly useful for the purpose of the present invention.
摘要:
The invention provides an optical microscope that prevents an increase in the complexity of the light source system and is equipped with optics readily capable of adequate operation even when the modulation frequency is increased in order to reduce the impact of the intensity noise of the laser, etc. This optical microscope 100 irradiates a sample 6 with a first train of optical pulses having a first optical frequency, which is generated by a first light source, and a second train of optical pulses having a second optical frequency, which is temporally synchronized with the first train of optical pulses and is generated by a second light source, and detects light scattered from the sample 6. The repetition frequency of the train of optical pulses generated by the first light source is an integral sub-multiple of the repetition frequency of the train of optical pulses generated by the second light source.
摘要:
The invention provides an optical microscope that prevents an increase in the complexity of the light source system and is equipped with optics readily capable of adequate operation even when the modulation frequency is increased in order to reduce the impact of the intensity noise of the laser, etc. This optical microscope 100 irradiates a sample 6 with a first train of optical pulses having a first optical frequency, which is generated by a first light source, and a second train of optical pulses having a second optical frequency, which is temporally synchronized with the first train of optical pulses and is generated by a second light source, and detects light scattered from the sample 6. The repetition frequency of the train of optical pulses generated by the first light source is an integral sub-multiple of the repetition frequency of the train of optical pulses generated by the second light source.
摘要:
The mass spectrometer according to the present invention includes a light source for emitting pulse light including a plurality of wavelengths; an ionizer for ionizing molecules of a sample by irradiating the light from the light source to the sample; and a mass analyzer for separating ions ionized in the ionizer according to their mass to charge ratios. For the light source, one including a plurality of ultrashort pulse laser sources each emitting a wavelength different from others, and one emitting ultrashort pulse light including plural wavelengths ranging from the visible region to the infrared region generated by dispersing an ultrashort pulse light with continuous (white) spectrum can be used. Pulse lights having plural wavelengths ranging from near infrared to the ultraviolet region respectively share the role; i.e., one of them vaporizes the sample without fragmenting it, and another ionizes the vaporized sample with the single-photon process or two-photon (or multi-photon) process. This enables ionization of protein complexes as a whole contained in the sample, and enables mass analyses of them.
摘要:
Disclosed are a method for determining the affinity of an antibody capable of binding to a cell membrane surface antigen for the antigen; and a method for assaying or screening an antibody capable of binding to a cell membrane surface antigen by utilizing the determination method. In the determination of the affinity of the antibody for the antigen, floating cells presenting the antigen on the surface of the cell membrane thereof are used and the B/F separation of the cells is made by centrifugation or on a filter through which the cells cannot pass.
摘要:
A PPAT polypeptide of SEQ ID NO: 1 derived from Jatropha, a PPAT polynucleotide of SEQ ID NO: 2 and so on were found. By transforming Jatropha with these PPAT polynucleotides, it is possible to overexpress the PPAT polypeptide in comparison with a wild type, and biosynthesis of coenzyme A is promoted by these polypeptides, the metabolic function and viability of the transformed Jatropha are enhanced, and for example, stress resistance can be significantly improved.
摘要翻译:发现衍生自麻疯树的SEQ ID NO:1的PPAT多肽,SEQ ID NO:2的PPAT多核苷酸等。 通过用这些PPAT多核苷酸转化麻疯树,可以与野生型相比过表达PPAT多肽,并且这些多肽促进了辅酶A的生物合成,增强了转化的麻疯树的代谢功能和活力,例如, 耐应力可显着提高。
摘要:
It is intended to provide a monoclonal antibody having a growth inhibitory activity against a cell having a human CD20 antigen which is produced by using, as immunogens, a human B cell line expressing the human CD20 antigen and a cell line originating in a non-human animal, which is different from an animal to be immunized and has been transformed with human CD20 DNA, and a monoclonal antibody obtained by chimerization or humanization of the above-described monoclonal antibody. These monoclonal antibodies show biological activities suitable for using as drugs.
摘要:
The number of peptides having an ability to bind to a cell or penetrate into a cell is narrowed down by being selectively enriched from a random peptide library with a diversity of not less than one hundred millions of peptides using a phage surface display technique, and then cytoplasmic transfer is evaluated by using protein synthesis inhibition as an indicator by adding to a cell, a fusion body of the selectively enriched peptide and a protein synthesis inhibitory factor (PSIF) that cannot solely penetrate into the cell.
摘要:
A method for monitoring cells is provided capable of determining the stage in cell cycle of a cell in a rapid and highly reliable manner.A step of obtaining an image that reflects the chromosomal state in the cell, and a step of calculating a parameter that corresponds to the chromosomal state based on the image to determine the stage in the cell cycle on the basis of the calculation result are included.