Video Experimental Relacionado
Updated: Jul 20, 2026
10:26
RNAscope for In situ Detection of Transcriptionally Active Human Papillomavirus in Head and Neck Squamous Cell Carcinoma
Published on: March 11, 2014
La expresión oncogénica en la neoplasia intraepitelial cervical y el cáncer invasivo de cuello uterino
S B Pinion1, J H Kennedy, R W Miller
1Department of Gynaecology, Aberdeen Royal Infirmary, Foresterhill, UK.
Lancet (London, England)
|April 6, 1991
Resumen
La amplificación de los oncogenes Ha-RAS, c-MYC y ERB-2 se observa en la neoplasia intraepitelial cervical (CIN) 3 y el cáncer cervical invasivo. Este hallazgo sugiere un posible método de detección de la neoplasia cervical utilizando el análisis automatizado de imágenes.
Área de la Ciencia:
- Oncología Oncología Oncología.
- Biología Molecular Biología Molecular
- Patología Patología Patología.
Sus antecedentes:
- La neoplasia intraepitelial cervical (CIN) y el cáncer cervical invasivo son preocupaciones de salud significativas.
- Comprender las alteraciones moleculares en la neoplasia cervical es crucial para el diagnóstico y el tratamiento.
Objetivo del estudio:
- Para investigar la expresión de los oncogenes Ha-RAS, c-MYC y ERB-2 en el cuello uterino normal, CIN y cáncer cervical invasivo.
- Evaluar la utilidad del análisis automatizado de imágenes para detectar la amplificación de oncogenes en muestras cervicales.
Principales métodos:
- Sistema automatizado de análisis de imágenes utilizado para cuantificar la expresión oncogénica.
- Se emplearon anticuerpos contra la proteína RAS p21, c-MYC y ERB-2.
- Análisis realizado en 12 muestras de cuello uterino normal, 10 CIN 1, 24 CIN 3 y 10 muestras de cáncer cervical invasivo.
Principales resultados:
- Se detectó amplificación de los oncogenes Ha-RAS, c-MYC y ERB-2 en CIN 3 y cáncer cervical invasivo en comparación con el cuello uterino normal y CIN 1.
- La diferencia más significativa se observó con el anticuerpo de la proteína RAS p21, que no mostró superposición entre CIN 3 y muestras normales.
- El análisis automatizado de imágenes demostró una alta sensibilidad para diferenciar la CIN 3 del tejido cervical normal.
Conclusiones:
- El estudio identifica amplificaciones oncogénicas específicas (Ha-RAS, c-MYC, ERB-2) como biomarcadores potenciales para la progresión de la neoplasia cervical.
- El análisis automatizado de imágenes de la expresión oncogénica, en particular RAS p21, es prometedor como herramienta de detección de neoplasias cervicales.
- Este método podría ayudar a determinar qué lesiones de CIN merecen tratamiento, lo que podría mejorar el manejo del paciente.
Videos de Conceptos Relacionados
01:33Cancer-Critical Genes I: Proto-oncogenes
Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
01:05Cancer-Critical Genes II: Tumor Suppressor Genes
Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
01:03Rous Sarcoma Virus (RSV) and Cancer
Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He won a Nobel Prize for this discovery in 1966. His experiments clearly demonstrated that some cancers could be caused by infectious agents and led to the discovery of many more cancer-causing viruses in animals as well as humans.
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
01:33Cancer-Critical Genes I: Proto-oncogenes
Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
01:05Cancer-Critical Genes II: Tumor Suppressor Genes
Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
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...