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000736017.pdf: 1092117 bytes, checksum: 23730ac0c228da8c6df28821beccf960 (MD5) / As β-defensinas são as proteínas mais amplamente estudadas dentre as três subfamílias das defensinas, uma vez que possuem extensa atividade antimicrobiana e são produzidas por vários tipos de células epiteliais, fornecendo assim proteção às membranas das células do hospedeiro. Em mamíferos, além de sua atividade antimicrobiana, essas proteínas atuam na maturação do espermatozoide, na capacitação espermática, na proteção do espermatozoide contra a resposta imune da fêmea e na expressão diferenciada e específica nos tecidos reprodutivos, sugerindo assim, uma importante função na reprodução e na fertilidade. O painel de linhagens celulares híbridas irradiadas (painel RH) construído para o genoma do búfalo (BBURH5000) vem sendo utilizado com sucesso nos estudos de mapeamento dos cromossomos bubalinos. A estratégia do mapeamento RH, ou seja, a utilização do painel RH associado a análises estatísticas, determina a ordem linear de marcadores nos cromossomos, sendo uma importante ferramenta para a construção de mapas físicos de alta resolução do genoma, e também na construção de mapas comparativos entre espécies. O presente trabalho teve por objetivo utilizar o painel BBURH5000 para mapear um conjunto de genes das β-defensinas no cromossomo 14 bubalino (BBU14) e a construção de um mapa comparativo in silico entre o BBU14 e seu homólogo em bovino. Para tal, foram testados com DNA bubalino, sequências de iniciadores para PCR provenientes de oito genes das β-defensinas, localizados no cromossomo 13 bovino (BTA13), o qual é homólogo ao BBU14. Do total de marcadores testados, seis amplificaram produtos de PCR adequados ao mapeamento utilizando o painel BBURH5000. No entanto, dois marcadores foram excluídos na etapa de genotipagem. A frequência de retenção dos marcadores no painel apresentou uma variação de 16,66% com o marcador BBD125 a 20,00% com ... / The β-defensins are proteins most widely studied of the three subfamilies of defensins, because have extensive antimicrobial activity and are produced by several types of epithelial cells, thereby providing protection to the membranes of host cells. In mammals, in addition to their antimicrobial activity, these proteins act in the maturation of spermatozoa, in sperm capacitation, in protecting the sperm against the female immune response and specific and differential expression in reproductive tissues, thus suggesting an important role in reproduction and fertility. The radiation hybrid panel (RH panel) constructed for buffalo genome (BBURH5000) has been successfully used in mapping studies of buffalo chromosomes. The RH mapping strategy, in other words, use of RH panel associated statistical analysis, determines the linear order of markers on chromosomes and is an important tool for the construction of physical maps of high resolution genome and also in the construction of comparative maps between species. The present study has the purpose to use the BBURH5000 panel to map a set of β-defensins genes on buffalo chromosome 14 and the construction of a comparative map in silico between BBU14 and homologous bovine. To this end, we tested buffalo DNA sequences of primers for PCR from eight genes of β-defensins, located on bovine chromosome 13 (BTA13), which is homologous to BBU14. Of the markers tested, six amplified suitable PCR product to the mapping using BBURH5000 panel. However, two markers were excluded in step genotyping. The retention frequency of markers on the panel presented a variation of 16.66% with a marker BBD125 to 20.00% with markers BBD119 and BBD122. The comparative analysis in silico between the BBU14 RH map and the sequence map of BTA13 allowed to indicate the location of these markers on buffalo chromosome 14
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.unesp.br:11449/108417 |
| Date | 29 July 2013 |
| Creators | Victoretti, Mariana [UNESP] |
| Contributors | Universidade Estadual Paulista (UNESP), Amaral, Maria Elisabete Jorge [UNESP], Stafuzza, Nedenia Bonvino [UNESP] |
| Publisher | Universidade Estadual Paulista (UNESP) |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | xii, 37 p. : il. |
| Source | Aleph, reponame:Repositório Institucional da UNESP, instname:Universidade Estadual Paulista, instacron:UNESP |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | -1, -1, -1 |
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