Sequenciação de ADN

Sequenciação de ADN

Tekle Pauzaite

42,60 €
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Editorial:
KS OmniScriptum Publishing
Año de edición:
2025
Materia
Biologia, ciencias de la vida
ISBN:
9786208593742
42,60 €
IVA incluido
Disponible

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O adenocarcinoma do cólon é o tipo mais comum de cancro gastrointestinal. Por conseguinte, foi efectuada a sequenciação do ADN de fragmentos de cADN numa linha celular Caco-2. Esta experiência foi realizada para encontrar potenciais marcadores biológicos da célula cancerosa ou do enterócito normal, que podem ser úteis no diagnóstico da doença. A sequenciação do ADN foi efectuada utilizando o método de terminação de cadeia com ddNTPs marcados e a sua leitura por um sequenciador de ADN (Beckman Coulter CEQ 2000). Das 11 sequências obtidas com sucesso, 5 fragmentos adquiridos corresponderam parcialmente a sequências de ADN humano e revelaram que os genes completos, aos quais estes fragmentos pertencem, codificariam 3 proteínas humanas diferentes. Estas proteínas são Guanine Nucleotide-Binding Protein Subunit Beta-2-Like 1; Chromodomain Helicase DNA Binding Protein 4; e Centromere protein J. Verificou-se que contribuem ou inibem os fenótipos cancerígenos das células, o que pode ser explicado pela quantidade de proteínas na célula e pelo nível de mutações que possuem. Esta investigação revela a necessidade de mais investigação sobre linhas celulares cancerígenas e a sua sequenciação de ADN.

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