Video Experimental Relacionado
Updated: Aug 9, 2026
07:13
Application of Retinoic Acid to Obtain Osteocytes Cultures from Primary Mouse Osteoblasts
Published on: May 13, 2014
Células óseas: un medio libre de suero apoya la proliferación en un cultivo primario
Science (New York, N.Y.)
|February 3, 1978
Resumen
Los cultivos de alta densidad de células óseas de la calvaria embrionaria de rata muestran un aumento de dos a tres veces en el número. Estas células responden a la hormona paratiroidea, lo que indica una posible diferenciación celular similar a la de los osteoblastos.
Área de la Ciencia:
- Biología celular Biología celular.
- Biología del desarrollo Biología del desarrollo.
- La bioquímica es la bioquímica.
Sus antecedentes:
- Comprender la proliferación y diferenciación de las células óseas es crucial para la ingeniería del tejido óseo y la medicina regenerativa.
- La calvaria embrionaria de rata proporciona un modelo valioso para estudiar el desarrollo temprano del hueso y la osteogénesis.
Objetivo del estudio:
- Investigar el efecto de la densidad de población en la proliferación y diferenciación de las células óseas in vitro.
- Para evaluar la capacidad de respuesta de las células óseas cultivadas a la hormona paratiroidea y su actividad de la fosfatasa alcalina.
Principales métodos:
- Aislamiento de células óseas de la calvaria embrionaria de una rata.
- Cultivo de células en densidades de población altas y bajas en un medio libre de suero, que contiene albúmina.
- Medición del número de células y la actividad de la fosfatasa alcalina.
- Evaluación de la respuesta a la hormona paratiroidea.
Principales resultados:
- Las células óseas cultivadas a altas densidades exhibieron un aumento de 2 a 3 veces en el número de células en comparación con los cultivos de baja densidad.
- Las células cultivadas demostraron una respuesta a la hormona paratiroidea.
- Se observó un aumento significativo en la actividad de la fosfatasa alcalina durante la proliferación celular.
Conclusiones:
- La alta densidad de población en cultivo promueve la proliferación de células óseas derivadas de la calvaria embrionaria de rata.
- La actividad de la fosfatasa alcalina observada y la respuesta a la hormona paratiroidea sugieren una diferenciación celular similar a la de los osteoblastos o un crecimiento preferencial en estas condiciones.
Videos de Conceptos Relacionados
01:19Mesenchymal Stem Cells
Mesenchymal stem cells (MSCs) are adult stem cells that can differentiate into most connective tissue cell types, except for hematopoietic cells, depending upon the source of MSCs. For example, bone-marrow-derived MSCs (BM-MSCs) can differentiate into osteocytes, hepatocytes, and pancreatic and neuronal cells. MSCs can be isolated from various sources such as bone marrow, placenta, adipose tissue, teeth, and Wharton’s jelly, a gelatinous substance in the umbilical cord. The ease of their access...
01:31Osteoclasts in Bone Remodeling
Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during bone...
01:21Cell Culture
Most vertebrate cells grow in vitro attached to a substrate as a monolayer, called adherent cultures. The flasks and plates used to grow cells are chemically treated to facilitate cell attachment. However, a few cell types, such as hematopoietic cells, can grow in a suspension. In contrast to adherent cultures, suspension cultures can grow in non-treated cultureware using magnetic stirrers or spinner flasks to agitate the culture media
01:30Bone Cells and Tissue
Bones contain a relatively small number of cells entrenched in a matrix of organic and inorganic components. Although bone cells compose only a small amount of the bone volume, they are crucial to its function. Four types of cells are found within the bone tissue— osteoblasts, osteocytes, osteogenic cells, and osteoclasts.
Osteoblasts and Osteocytes
The osteoblast is the bone cell responsible for forming new bone tissue. It is found in the growing portions of bone, including the periosteum and...
Osteoblasts and Osteocytes
The osteoblast is the bone cell responsible for forming new bone tissue. It is found in the growing portions of bone, including the periosteum and...
01:18The Bone Matrix
Bone contains a relatively small number of cells entrenched in a matrix of collagen fibers that provide an adherent surface for inorganic salt crystals. Both components of the matrix, organic and inorganic, contribute to the unusual properties of bone. Without collagen, bones would be brittle and shatter easily. Without mineral crystals, bones would flex and provide little support. This can be observed by an experiment: when the minerals of a bone are dissolved by soaking the bone in acid or...
01:17Hormones and Bone Tissue
The endocrine system produces and secretes hormones, which interact with the skeletal system. These hormones control bone growth, maintain bone once it is formed, and remodel it.
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...