Fujifilm Corporation

Japan Tissue Engineering Co., Ltd.

Sanbio, Inc.

Hayato Miyoshi

Toshihiro Mori

Yoshihide Iwaki

Kentaro Nakamura

Satoko Hada

Koju Ito

Keisuke Oku

Takahiro Oba

Hideo Fushimi

Masatoki Watanabe

Takeshi Senga

Shinji Mima

Tasuku Sasaki

Ciara C Tate

Ai Okamura

Masafumi Nishino

Takayuki Kobayashi

Reiko Iwazawa

Monique A Dao

Kazuhiro Yamaguchi

Provided is a method for producing a cell laminate including cell layers on both surfaces of a porous membrane, using a vessel having a bottom portion and a side wall portion standing from a periphery of the bottom portion, the porous membrane, and a holding member configured to hold the porous membrane such that the porous membrane faces an inner bottom surface of the vessel and is held at a position that does not contact the inner bottom surface, the method including culturing first cells in a liquid medium that contacts the inner bottom surface of the vessel and a surface of the porous membrane, in a state in which the porous membrane is held, by the holding member, at a position that does not contact the inner bottom surface of the vessel so as to face the inner bottom surface, and in which the bottom portion of the vessel is positioned at the upper side while the porous membrane is positioned at the lower side in a direction of gravity; and culturing the first cells at a lower surface of the porous membrane and culturing second cells at an upper surface of the porous membrane, in a state in which the porous membrane is held, by the holding member, at a position that does not contact the inner bottom surface of the vessel so as to face the inner bottom surface, and in which the bottom portion of the vessel is positioned at the lower side while the porous membrane is positioned at the upper side in the direction of gravity.

Method for producing cell laminate

There is provided an evaluation method for permeability of a porous membrane that separates a first flow channel and a second flow channel, the evaluation method including supplying a pressure to a liquid inside the first flow channel and acquiring a change that occurs in a liquid accommodated in the second flow channel as an evaluation indicator of permeability of the porous membrane.

Evaluation method for permeability of porous membrane, cell evaluation method, and drug evaluation method

An object of the invention is to provide a cartilage regenerative material that is capable of regenerating bone and cartilage using cells. Provided is a cartilage regenerative material including a cell construct, which includes biocompatible polymer blocks and stem cells, in which a plurality of the biocompatible polymer blocks are disposed in gaps between a plurality of the stem cells.

Cartilage regenerative material

An object of the invention is to provide a cartilage regenerative material that suppresses infiltration of fibrous soft tissue and brings about satisfactory cartilage regeneration, and a method for producing the cartilage regenerative material. Provided is a cartilage regenerative material including a porous body of a biocompatible polymer and a biocompatible polymer film, in which the porous body contains chondrocytes and cartilage matrix, and the cartilage matrix exists in a region of 10% or more of a region extending from the surface of the transplant face of the porous body to a depth of 150 &#x3bc;m along the thickness.

Cartilage regenerative material and method for producing same

It is an object of the present invention to provide a cell-containing composition capable of suppressing the outflow of the cells after transplantation and improving the survival rate of the cells. The present invention provides a composition which comprises any of bone marrow stromal cell-derived neural precursor cells, bone marrow stromal cell-derived Schwann cells, or bone marrow stromal cell-derived skeletal muscle cells; and a biocompatible polymer.

Composition comprising cell and biocompatible polymer

An object to be achieved by the present invention is to provide a nucleic acid amplification method by which a nucleic acid can be amplified substantially isothermally using oligonucleotide primers and DNA polymerase capable of strand displacement. The present invention provides a nucleic acid amplification method which comprises performing substantially isothermal incubation of a reaction solution containing at least one type of deoxynucleotide triphosphate, at least one type of DNA polymerase having strand displacement activity, a divalent cation, at least 0.01% or more surfactant, at least two types of oligonucleotide primer, and the nucleic acid fragment as a template so as to perform a polymerase reaction that initiates from the 3' end of the primer and thus amplifying the nucleic acid fragment.

Isothermal nucleic acid amplification method using surfactant

An object to be achieved by the present invention is to provide a nucleic acid amplification method by which a nucleic acid can be amplified using oligonucleotide primers and DNA polymerase. The present invention provides a nucleic acid amplification method which comprises performing incubation of a reaction solution containing at least one type of deoxynucleotide triphosphate, at least one type of DNA polymerase, at least two types of oligonucleotide primer, and the nucleic acid fragment as a template so as to perform a polymerase reaction that initiates from the 3' end of the primer and thus amplifying the nucleic acid fragment, wherein a tag sequence is added at the 5&#x2032; end of the first oligonucleotide primer, and the tag sequence is a nucleotide sequence on the template nucleic acid fragment which is present downstream of the sequence which is substantially complementary with the 3&#x2032; end region of the first oligonucleotide primer (a region where the first oligonucleotide is annealed to the template nucleic acid).

Nucleic acid amplification method

The present invention describes methods for discriminating between nucleotide sequences of first and second nucleic acids, including: providing a reaction solution, including a deoxynucleotide triphosphate, a DNA polymerase with strand displacement ability, a template nucleic acid fragment, a primer, and a mask oligo; incubating the reaction solution, obtaining a polymerase reaction, and producing an amplification product; detecting the amplification product to discriminate between the nucleotide sequences, wherein the primer is complementary to the first nucleic acid, the mask oligo hybridizes to the nucleotide sequence portion of the first and second nucleic acid, wherein the mask oligo is more complementary to the second nucleic acid than to the first nucleic acid, and wherein the mask oligo is not an origin of an elongation reaction with the polymerase, and a primer portion and a mask oligo portion hybridize to the same regions on the first and second nucleic acid.

Method for discriminating between nucleotide sequences of nucleic acids

An object of the invention is to provide type IV collagen without contamination by other proteins and without degradation or denaturation. The present invention provides a type IV collagen which is derived and extracted from lens capsules without the use of an enzyme and has a minimum molecular weight of 160 to 180 kDa measured by SDS-PAGE under reduced conditions.

Method for producing type IV collagen

It is an object of the present invention to provide a method for detecting a target substance in a specimen with the use of fine particles, whereby the target substance can be readily detected with the exclusive use of a single type of probe and the detection limit is improved. The present invention provides a method for detecting a target substance in a specimen which comprises the steps of: allowing a complex of a fine particle and a probe to come into contact with a specimen; and detecting changes in physical properties of the fine particle that are caused by desorption of the probe from the fine particle due to interaction between the target substance in the specimen and the probe.

Growing community of inventors

Kanagawa, Japan

Hayato Miyoshi