RESUMO
We performed the matrix-assisted laser desorption/ionisation, time-of-flight mass spectrometry (MALDI-TOF) analysis of the peptides entering into the composition of not yet explored bioregulators derived from the extracellular matrix of the tissues of the various organs of the mammals, and also plants and fungi. The study included 15 different mammalian tissues, 13 species of plants, and 2 species of fungi. Exploring the bioregulators derived from eye tissues, we demonstrated that their composition includes peptide components with the same values of the molecular weight. The composition of the bioregulators derived from the tissues of various organs of mammals or different species of plants and fungi includes the peptides with different values of molecular weight. Obtained data indicate the growing evidence of the assumptions about the major function of the bioregulators of this group--their involvement in the regulation of tissue-organ homeostasis in the biological systems.
Assuntos
Produtos Biológicos/isolamento & purificação , Espaço Extracelular/química , Proteínas do Olho/análise , Peptídeos/isolamento & purificação , Extratos de Tecidos/química , Animais , Produtos Biológicos/química , Osso e Ossos/química , Química Encefálica , Bovinos , Feminino , Fungos/química , Fígado/química , Masculino , Peso Molecular , Miocárdio/química , Peptídeos/química , Plantas/química , Ratos , Ratos Wistar , Espectrometria de Massas por Ionização e Dessorção a Laser Assistida por MatrizRESUMO
Experiments on stationary culture of posterior eye and roll-bottle culture of the whole eye from adult water lizards Pleurodeles waltl showed that sclera bioregulator produces a stabilizing effects on adhesion interactions between the sclera, choroid, and pigment epithelium and on the maintenance of viability of sclera fibroblasts and pigment epithelium cells.
Assuntos
Proteínas do Olho/administração & dosagem , Olho/efeitos dos fármacos , Esclera/fisiologia , Animais , Corioide , Epitélio Pigmentado Ocular/efeitos dos fármacos , Pleurodeles , Técnicas de Cultura de Tecidos/métodosRESUMO
A new bioregulator operating in ultralow doses corresponding to 10(-17) mg/ml has been isolated from tissue of pigmented epithelium of bovine eyes. It has been established that the functional basis of this bioregulator is a complex of a low molecular weight regulatory peptide (4372 Da) and a modulator consisting of a mixture of proteins with molecular weights of 14.980-66.283 kDa. It has been shown that the regulatory peptide is responsible for membranotropic activity of the bioregulator, and the modulator proteins are responsible for biological action in ultralow doses. The data demonstrate an interrelation between nanocondition of the bioregulator and its ability to show activity in ultralow doses.
Assuntos
Peptídeos/fisiologia , Proteínas/fisiologia , Epitélio Pigmentado da Retina/química , Animais , Bovinos , Cromatografia de Afinidade , Cromatografia Líquida de Alta Pressão , Tamanho da Partícula , Peptídeos/química , Proteínas/química , Espectrometria de Massas por Ionização e Dessorção a Laser Assistida por Matriz , Relação Estrutura-AtividadeRESUMO
New, previously not studied bioregulators active in the ultra low doses corresponding of 10(-8) - 10(-17) mg/ml have been isolated from vitreoretinal tissue of eye. It has been shown that these bioregulators comprise some regulatory peptides-modulators represented by proteins with molecular weights 15-70 KDa one of which is bovine serum albumin. Correlation between the nanosize of bioregulators and their ability to show activity in ultra low doses is established.
