Video Experimental Relacionado
Updated: Aug 18, 2026

12:49
Mutagenesis and Analysis of Genetic Mutations in the GC-rich KISS1 Receptor Sequence Identified in Humans with Reproductive Disorders
Published on: September 4, 2011
Identificación y caracterización de la proteína codificada por el oncogén N-myc humano
Resumen
Los investigadores desarrollaron anticuerpos para detectar la proteína N-myc, un proto-oncogén vinculado al crecimiento tumoral. Estos anticuerpos identificaron con éxito células malignas en muestras de pacientes, ayudando en el diagnóstico del cáncer.
Área de la Ciencia:
- Oncología Oncología.
- Biología Molecular Biología Molecular
- Genética La genética.
Sus antecedentes:
- El gen N-myc, relacionado con c-myc, exhibe un potencial de transformación in vitro.
- La amplificación de N-myc se observa con frecuencia en las líneas celulares de neuroblastoma y retinoblastoma humanos.
- La amplificación del gen N-myc en tumores primarios se correlaciona con el comportamiento tumoral.
Objetivo del estudio:
- Para producir antígenos representativos de la proteína N-myc.
- Para generar antisera capaz de reconocer la proteína N-myc.
- Para evaluar la utilidad de N-myc antisera en la identificación de células malignas.
Principales métodos:
- Se utilizaron fragmentos de restricción específica de un clon de ADN complementario parcial de N-myc.
- Fragmentos insertados en un vector de expresión bacteriana para la producción de antígenos.
- Conejos inmunizados con antígenos N-myc para producir antiseros específicos.
Principales resultados:
- Antisera reconoció una proteína de 62-64 kilodaltones en las células del neuroblastoma.
- Esta proteína comparte características con la proteína proto-oncogénica c-myc.
- Antisera identificó con éxito células malignas en muestras clínicas a través de la histoquímica.
Conclusiones:
- Se desarrolló un antisera específico contra la proteína N-myc.
- Confirmó la relación de la proteína N-myc con la familia de proto-oncogenes c-myc.
- Demostró el potencial de diagnóstico de N-myc antisera en la detección del cáncer.
Videos de Conceptos Relacionados
Mitogens and the Cell Cycle
Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...
Abnormal Proliferation
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the daughter...
Cancer-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...
mTOR Signaling and Cancer Progression
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
The mTOR pathway or the...
Tagging and Fusion Proteins
Proteins are involved in several cellular processes and biochemical reactions. Analyzing a specific protein of interest requires it to be isolated from the other proteins in the cell. This is achieved by overexpressing the specific gene in a suitable host to produce large quantities of the target protein. A tag or label is recombined with the gene to produce a fusion protein containing the target protein and the tag. The tags on these fusion proteins can then be used for easy detection and...
Induced 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...

