Abstract: The invention is directed to the retention of the stability of formulations useful for a gene therapy during the preparation and preservation. In the invention, at least one saccharide and/or at least one non-hydrophobic amino acid and/or at least one organic acid having two or more carboxyl groups except amino acids, or a collagen or a gelatin and at least one amino acid are added to a gene formulation.

Abstract: The present invention relates to gene preparations comprising desired genes or vectors containing desired genes integrated there into and carriers for supporting the same. The carrier is preferably a soluble collagen such as atelocollagen and may further include an additive. The invention also encompasses methods for delivering genes to cells employing the gene preparation.

Abstract: The object of the present invention is to provide methods for identifying factors involved in inducing the differentiation of pluripotent cells, and methods for using those factors. Using cDNA microarray technology, variations in gene expression between placebo-treated and CCl4-treated mice livers were analyzed 24 hours after treatment, and several growth factors were selected. The effects of matrix and growth factors on hepatocyte differentiation rates of ES cells were investigated. As a result, the present inventors succeeded in differentiating hepatocytes from ES cells without EB formation, using simple adherent monoculturing in media comprising several growth factors in culture dishes with two different matrices.

Abstract: Means for transferring efficiently a desired nucleic acid into a cell is provided.

Abstract: Preparations for transferring efficiently oligonucleotides necessary in antisense therapy or the like into animal cells so as to be useful in treatment for various diseases, which comprises a collagen as an essential component are provided.

Abstract: The present invention provides a human c-Ha-ras proto-oncogene transgenic rat and the methods of the screening of many carcinogens and the screenings of promoters of carcinogenesis and preventive and inhibitory agents of tumors, and additionally enables the analysis of the carcinogenesis mechanism of a number of tumors.

Abstract: The present invention relates to gene preparations comprising desired genes or vectors containing desired genes integrated there into and carriers for supporting the same.

Abstract: The present invention provides a gene-containing composition including a gene and a transporter, the transporter being capable of transporting the gene from a pregnant body to fetal cells. When this composition is administered to a pregnant body, birth of offsprings with gene deficiency can be prevented, and gene deficiency can be treated during pregnancy. In animal experiments, when an unknown gene is introduced to animals during their embryogenic stage, the function of the gene in ontogenesis can be elucidated. Moreover, the composition can be used for breeding animals such as pets, industrial animals and cattle.

Abstract: The present invention provides a gene-containing composition including a gene and a transporter, the transporter being capable of transporting the gene from a pregnant body to fetal cells. When this composition is administered to a pregnant body, birth of offsprings with gene deficiency can be prevented, and gene deficiency can be treated during pregnancy. In animal experiments, when an unknown gene is introduced to animals during their embryogenic stage, the function of the gene in ontogenesis can be elucidated. Moreover, the composition can be used for breeding animals such as pets, industrial animals and cattle.