Video Experimental Relacionado
Updated: Jul 11, 2026
10:19
Derivation of Mouse Trophoblast Stem Cells from Blastocysts
Published on: June 8, 2010
Células madre embrionarias específicas del paciente derivadas de blastocistos SCNT humanos
Woo Suk Hwang1, Sung Il Roh, Byeong Chun Lee
1College of Veterinary Medicine, Seoul National University, Seoul 151-742, Korea. hwangws@snu.ac.kr
Science (New York, N.Y.)
|May 21, 2005
Resumen
Las células madre embrionarias humanas específicas del paciente (hESC) se crearon mediante la transferencia de núcleos de células somáticas. Estas células inmunes igualadas son pluripotentes y genéticamente idénticas a los pacientes, allanando el camino para el trasplante seguro de células madre.
Área de la Ciencia:
- Biología de las células madre Biología de las células madre
- La Medicina Reproductiva es una de ellas.
- Inmunología Inmunología.
Sus antecedentes:
- Las células madre embrionarias humanas específicas del paciente (hESC) son una promesa significativa para la investigación de enfermedades y la medicina regenerativa.
- Los avances en el trasplante de células madre requieren el desarrollo de líneas celulares inmunológicamente compatibles.
Objetivo del estudio:
- Para establecer líneas hESC inmunológicamente emparejadas específicas del paciente utilizando la transferencia de núcleos de células somáticas (SCNT).
- Evaluar la pluripotencia, la estabilidad cromosómica y la compatibilidad inmunológica de las hESC de transferencia nuclear generadas (NT-hESC).
Principales métodos:
- Generación de once líneas NT-hESC de células de la piel de pacientes a través de SCNT en óvulos donados.
- Cultivo de NT-hESC en células alimentadoras humanas de donantes iguales o no relacionados.
- Análisis de la pluripotencia NT-hESC, la normalidad cromosómica, la coincidencia del ADN y la identidad del complejo mayor de histocompatibilidad (MHC).
Principales resultados:
- Las NT-hESC se establecieron con éxito a altas tasas de diversos pacientes donantes.
- Los NT-hESC generados demostraron pluripotencia, normalidad cromosómica y coincidencia del ADN específico del paciente.
- La compatibilidad inmunológica se confirmó a través de la comparación de identidad de MHC entre NT-hESC y pacientes.
Conclusiones:
- La generación exitosa de NT-hESCs inmunológicamente emparejadas específicas del paciente es un paso crítico hacia las aplicaciones clínicas.
- Se requiere más investigación para los protocolos de diferenciación dirigida y la eliminación de componentes animales antes del trasplante clínico.
- La evidencia preclínica que demuestra la seguridad y eficacia del trasplante diferenciado de NT-hESC es esencial para el uso clínico futuro.
Videos de Conceptos Relacionados
00:58Embryonic Stem Cells
Embryonic stem (ES) cells are undifferentiated pluripotent cells, meaning they can produce any cell type in the body. This gives them tremendous potential in science and medicine since they can generate specific cell types for use in research or to replace body cells lost due to damage or disease.
01:10Zygotic Development And Stem Cell Formation
The development of all multicellular organisms starts with the fusion of haploid cells called sperm and egg to form a diploid zygote. A zygote is a totipotent cell that can develop into a complete organism. The zygote undergoes cell division or cleavage to form an 8-cell mass. Until this stage, the cells are spherical, loosely attached, and remain totipotent. Totipotent cells are capable of developing both the embryonic and the extraembryonic tissues. However, as they continue to divide, they...
01:27Source And Potency Of Stem Cells
Stem cells are undifferentiated cells with extensive self-renewal properties that help them maintain their population during the fetal and adult stages of life. They can specialize in all cell types of the human body. However, their differential potential may vary and can be classified into five types. Stem cells can be (1) Totipotent, (2) Pluripotent, (3) Multipotent, (4) Oligopotent, and (5) Unipotent. Each stem cell has a specific origin; the fertilized egg or zygote is a totipotent cell and...
01:17Stem Cell Culture
Stem cell research aims to find ways to use stem cells to regenerate and repair cellular damage. Over time, most adult cells undergo the wear and tear of aging and lose their ability to divide and repair themselves. Stem cells do not display a particular morphology or function. Adult stem cells, which exist as a small subset of cells in most tissues, keep dividing and can differentiate into a number of specialized cells generally formed by that tissue. These cells enable the body to renew and...
00:57Embryonic Stem Cells
Embryonic stem (ES) cells were first discovered in mice in 1981 by Martin Evans. In 1998, James Thomson identified a method to isolate embryonic stem cells from humans. Human embryonic stem cells (hESCs) are obtained from 3-5 day old embryos that remain unused after an in vitro fertilization procedure.
ES cells are grown in a culture medium where they can divide indefinitely, creating ES cell lines. Under certain conditions, ES cells can differentiate, either spontaneously into a variety of...
ES cells are grown in a culture medium where they can divide indefinitely, creating ES cell lines. Under certain conditions, ES cells can differentiate, either spontaneously into a variety of...
01:06Induced Pluripotent Stem Cells
Stem cells are undifferentiated cells that divide and produce different cell types. Ordinarily, cells that have differentiated into a specific cell type are terminally differentiated; however, scientists have found a way to reprogram these mature cells so that they dedifferentiate and return to an unspecialized, proliferative state. These cells are pluripotent like embryonic stem cells—able to produce all cell types—and are called induced pluripotent stem cells (iPSCs).
Somatic cells are...
Somatic cells are...