4 results about "Fibroblast cell line" patented technology

This invention relates to the interdisciplinary field of cell biology, experimental oncology, and translational medicine, specifically to a cancer-associated fibroblast cell line, its construction method, and its applications. This invention fills the research gap in mouse-derived oral squamous cell carcinoma-associated fibroblast cell line models and provides a method for constructing such a cell line. Through the inverted adherent culture and enzymatic digestion methods of this invention, a mouse-derived oral squamous cell carcinoma-associated fibroblast cell line with a clear origin, high purity, and long-term phenotypic and functional stability can be obtained. This allows for the establishment of a cryopreservable and resuscitable mouse oral squamous cell carcinoma-associated fibroblast cell bank, providing technical support for research related to the tumor microenvironment and immunotherapy.

This invention belongs to the field of animal cell culture technology, specifically relating to chicken embryo fibroblast cell lines, their culture media, acclimatization methods, and applications. This application provides a chicken embryo fibroblast cell line derived from… Gallus gallus The chicken embryo fibroblast suspension cell line CEF-P17 3D is deposited at the China Center for Type Culture Collection (CCTCC) with accession number CCTCC NO: C202661 and deposit date of March 31, 2026. This application also provides a culture medium for culturing the chicken embryo fibroblast cell line and a method for acclimatizing the chicken embryo fibroblast cell line, which shortens the acclimatization period, simplifies the operation, and is suitable for large-scale culture. This application also provides the application of the culture medium for the chicken embryo fibroblast cell line. Furthermore, this application also provides the application of the chicken embryo fibroblast cell line in the preparation of cultured meat.

This application provides a method for establishing and applying mouse gastric squamous cell carcinoma cell lines and gastric cancer-related fibroblast cell lines. The culture medium for culturing these cell lines comprises L-WRN cell culture supernatant, and 100×N-2 additive (0.5 vol%–1.5 vol%), 50× vitamin A-free B-27 additive (1.5 vol%–2.5 vol%), N-acetylcysteine ​​amide (1 mM–1.5 mM), nicotinamide (8 mM–12 mM), FGF-10 (80 ng / mL–120 ng / mL), EGF (40 ng / mL–60 ng / mL), A83-01 (0.8 μM–1.2 μM), Y-27632 dihydrochloride (8 μM–12 μM), Glutamax additive (0.5 vol%–1.5 vol%), and Matrigel. The culture medium provided in this application contains 5 vol%–7 vol% Hepes buffer (8 mM–12 mM) and gastrin (0.8 nM–1.2 nM). This medium can significantly improve the success rate of in vitro culture of primary cell lines. The mouse gastric squamous cell carcinoma cell lines and gastric cancer-related fibroblast cell lines obtained from this medium are genetically stable and can be used to construct ectopic or orthotopic implantation models in immune-active mice.

The present application relates to a method for constructing a pig endogenous retrovirus inactivated xenotransplant donor pig, and belongs to the technical field of xenogenic organ transplantation. The copy number and PERV-pol genotype of PERVs are determined by ddPCR, Sanger sequencing and second-generation sequencing. Based on the RNP system of CRISPR / Cas9, the pig PERV-pol gene targeting sequence is designed and synthesized, and is co-transfected into a pig fetal fibroblast cell line with spCas9 protein, positive cells are screened, somatic cell cloning and embryo transfer are carried out, and the PERV-pol knockout condition of the fetus is identified when pregnancy occurs. If not completely knocked out, the sgRNA targeting sequence needs to be designed and synthesized again, and the cell line with completely knocked out PERV-pol gene is screened. If completely knocked out, somatic cell cloning and embryo transfer are directly carried out; and the xenotransplant donor pig with inactivated PERVs is obtained.