摘要:
Method and apparatus for improving the quality of mammalian sperm. The method comprises irradiating said sperm cells with non-coherent red light, the irradiation with non-coherent red light being performed in a discontinuous manner according to a pattern including at least one sequence of two irradiation periods of specific durations which are separated by an intermediate period of darkness of a specific duration, wherein the sperm cells are diluted in a diluent with cryo-preservatives solutes and are included in said container in a frozen state, and said discontinuous pattern comprise a duration between 3 and 15 minutes.
摘要:
There is provided anadherent cell-culture support comprising gold nanoparticles on the surface where the cells attach to, wherein the size of the nanoparticles is from 5 nm to 2 microns, the distance between the nanoparticles is from 2 nm to 30nm and the anisotropy aspect ratio is greater than 1.These substrates have improved properties for allowing the culturing and subsequent detachment of cells, with potential applications in a wide range of fields such as stem cell research and tissue engineering. There is also provided a process for their preparation and several uses thereof.
摘要:
본 발명은 근적외선에 의한 세포의 선택적 탈착, 패턴 및 수확 방법에 관한 것으로, 보다 상세하게는, 근적외선 조사 시 발열특성을 갖는 전도성 고분자 또는 금속산화물을 세포배양용 지지체로 사용하여 효소 처리 없이도 세포를 선택적으로 탈착시킬 수 있고, 상기 지지체는 줄기세포 증식 또는 분화를 촉진하는 효과가 있어 줄기세포 배양 지지체로 사용할 수 있으며, 시간적 공간적 제약 없이 세포 탈착이 가능하여 세포의 패턴화가 가능하다.
摘要:
The present invention refers to a non -invasive method for isolating adipose-derived stem cells from adipose tissue by illuminating the adipose tissue with at least one laser having a wavelength of between 360nm to 480nm or between 800nm to 2pm for a predetermined time for dissociating fat cells and blood vessels of the adipose tissue to release intact stem cells from the adipose tissue while maintaining the viability of the stem cells. In the preferred embodiment, the adipose tissue is illuminated with pulsed near infra-red (NIR) laser and a continuous wave (CW) diode blue laser. The present invention also contains a system adapted for isolating adipose -derived stem cells from adipose tissue using the method of the present invention.
摘要:
The present application relates to methods of producing exosomes or extracts thereof for use in the treatment of diseases or disorders. In particular, the present invention relates to a method of producing exosomes or extracts thereof comprising the steps of: (a) exposing a population of isolated mammalian cells to light between 500nm to 820nm for sufficient time to enable said cells to produce and excrete said exosomes; and (b) separating said exosomes from other cellular components based on molecular weight, size, shape, composition or biological activity.
摘要:
The present invention provides an in vitro method of expressing an antigenic molecule or a part thereof on the surface of a dendritic cell using a PCI method with TPCS 2a at a concentration of 0.020-0.1μg/ml, using light of a wavelength of between 400 and 500nm. Methods of treatment such as vaccination comprising this method, together with compositions comprising said cells and uses involving said cells expressing antigenic molecules are also provided.
摘要:
The invention provides methods, materials and systems of regulating association between proteins of interest using light. In an aspect, the invention takes advantage of the ability of phytochromes to change conformation upon exposure to appropriate light conditions, and to bind in a conformation-dependent manner to cognate proteins called phytochrome -interacting factors. The invention comprises a method of regulating interaction between a first protein of interest and second protein within a cell by light. Such a method optionally comprises providing in the cell (1) a first protein construct which comprises the first protein, a phytochrome domain (PHD), and (2) providing in the cell a second protein construct which comprises the second protein and a phytochrome domain- interacting peptide (PIP) that can bind selectively to the Pfr state, but not to the Pr state, of the phytochrome domain.
摘要:
Device (1) for stimulation of at least one cell (2), and/or for stimulation of at least one electrochemical reaction, comprising at least one semiconductor (3) that is configured to convert electromagnetic radiation (4) into a charge separation (5), wherein the semiconductor (3) is planar and the device further comprises a planar metal layer (6), wherein the metal layer (6) forms a Schottky barrier (7), and/or a metal-insulator-semiconductor junction, with the semiconductor layer (3), the semiconductor and/or the metal layer is configured to bind to a cell (2) on contact, and/or configured to repel the cell (2) on contact in order to promote oriented or non-oriented binding to the cell, and/or configured to promote the electrochemical reaction when the device (1) is in contact with a solvent (11). The semiconductor (3) comprises at least one platelet (31) having a planar top face, a planar bottom face, and a circumferential side face that is more or less line-shaped or band-shaped, wherein either the top face or the bottom face of the platelet (31) is coated with the metal layer (6). A system (10) for the stimulation of a plurality of points in a network of cells, comprising a plurality of devices (1) according to the invention dispersed in a solvent (11). Methods (100-140, 210-240) for the fabrication of a plurality of devices (1) according to the invention. A disinfecting or sterilizing agent, and a medicament, with a plurality of devices according to the invention as its active ingredient.