Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method of differentiation of morula or inner cell mass cells and method of making lineage-defective embryonic stem cells

a technology of inner cell mass and differentiation method, which is applied in the field of differentiation method of morula or inner cell mass cells and the method of making lineage-defective embryonic stem cells, can solve the problems of unstable embryonic stem cell lines, granulosa cells are not easily cultured, and no evidence of development past, so as to prevent the growth of embryonic stem cells

Inactive Publication Date: 2005-12-01
ADVANCED CELL TECH INC
View PDF2 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0027] Another object of the invention is to culture cells of a morula or inner cell mass cells such that the growth of embryonic stem cells is prevented while the growth of differentiated progenitor cells is promoted.

Problems solved by technology

However, there was no demonstration of development past early embryonic stages (blastocyst stage).
Also, granulosa cells are not easily cultured and are only obtainable from females.
However, stable embryonic stem cell lines and reliable methods for expansion of those cells into differentiated cells / tissues / organs are not yet available.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0091] The following example illustrates that only a fraction of the inner cell mass cells cultured are capable of developing into embryonic stem cell-like cells. Thus, there are pluripotent inner cell mass cells which cannot, or do not, develop into embryonic stem cells.

Explant Derivation and Culture

[0092] A. Sample Retrieval [0093] 1) Thoroughly clean the section of tissue to be removed, such as by use of an iodine or ethanol solution. [0094] 2) Remove sample with an ear notcher or scissors and immediately place the tissue in an antibiotic solution (Solution 1 or equivalent). Swirl solution to remove any remaining iodine. [0095] 3) Transfer to a 50 ml conical tube of fresh Solution 1. [0096] 4) Store or ship overnight at 4° C.

[0097] B. Tissue Sectioning and Culture [0098] 1) Remove sample from conical tube and place in fresh warm Solution 1 in a 100 mm culture dish. [0099] 2) Trim any hair using sterile forceps and scissors and transfer to another dish of Solution 1. [0100] 3)...

example 2

[0117] Three adult Holstein steers approximately 8-10 months old (weighing approximately 500-1000 lbs) were purchased from Thomas Morris, Inc., Maryland, and shipped to the South Deerfield Farm at the University of Massachusetts, Amherst. To obtain fibroblasts for nuclear transfer, skin biopsies were obtained from each of the animals by ear notch. A plasmid which expresses a reporter gene encoding enhanced green fluorescent protein (eGFP), was transfected into the cells, and transfected cells were selected with neomycin. Purified cells, analyzed by PCR and / or FISH, were used for nuclear transfer as described previously in Nature (2998) Biotechnol. 16: 642-646, herein incorporated by reference.

[0118] Isolated inner cell mass cells generated from bovine blastocysts are then injected into the paralumbar fascia of the donor steers (three sites with inner mass cells from three 10 day embryos, three sites with inner mass cells from three 12 day embryos, and three sites with inner mass ce...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
cell massaaaaaaaaaa
Login to View More

Abstract

An improved method of producing differentiated progenitor cells comprising obtaining inner cell mass cells from a blastocyst and inducing differentiation of the inner cell mass cells to produce differentiated progenitor cells. The differentiated progenitor cells may be transfected such that there is an addition, deletion or alteration of a desired gene. The differentiated progenitor cells are useful in cell therapy and as a I source of cells for the production of tissues and organs for transplantation. Also provided is a method of producing a lineage-defective human embryonic stem cell.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a method of differentiation of the cells of a morula or the inner cells of a blastocyst. These cells can be used for cell therapy and for the generation of cells and organs for isogenic, allogeneic and / or xenogeneic transplantation. The present invention also relates to the production of lineage-defective embryonic stem cells which will not differentiate into specific differentiated lineages, such as mesoderm, endoderm or ectoderm. [0003] 2. Description of the Related Art [0004] Methods for deriving embryonic stem (ES) cell lines in vitro from early preimplantation mouse embryos are well known. (See, e.g., Evans et al., Nature, 29:154-156 (1981); Martin, Proc. Natl. Acad. Sci., USA, 78:7634-7638 (1981)). ES cells can be passaged in an undifferentiated state, provided that a feeder layer of fibroblast cells (Evans et al., Id.) or a differentiation inhibiting source (Smith et al., Dev....

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(United States)
IPC IPC(8): A61K35/12A61K35/28C12N15/09A61K35/30A61K35/48A61P1/16A61P3/10A61P9/00A61P9/02A61P11/00A61P13/02A61P17/02A61P19/04A61P21/04A61P25/00A61P25/14A61P25/16A61P25/28A61P31/18A61P35/00A61P37/06C12N5/0735C12N5/10
CPCA61K35/12C12N5/16C12N2510/00C12N5/0606A61P1/16A61P11/00A61P13/02A61P17/02A61P19/04A61P21/04A61P25/00A61P25/14A61P25/16A61P25/28A61P31/18A61P35/00A61P37/06A61P9/00A61P9/02A61P3/10
Inventor CIBELLI, JOSEWEST, MICHAEL D.LANZA, ROBERT
Owner ADVANCED CELL TECH INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com