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GENETICA DO CÂNCER Flashcards

(7 cards)

1
Q

Quais são as duas principais características comuns a todos os cânceres?

A

Proliferação celular descontrolada e metástase.

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2
Q

O que são proto-oncogenes?

A

Genes normais que regulam o crescimento e diferenciação celular de forma controlada.

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3
Q

O que são oncogenes?

A

Versões alteradas de proto-oncogenes que promovem divisão celular descontrolada.

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4
Q

Qual a função dos genes supressores de tumor?

A

Inibir o crescimento celular anormal.

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5
Q

O que é amplificação gênica em proto-oncogenes?

A

Aumento do número de cópias de um gene (ex: NMYC em neuroblastoma).

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6
Q

O que é superexpressão gênica?

A

Aumento da função de um gene sem aumento do número de cópias (ex: HER2 no câncer de mama).

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7
Q

Qual oncogene está associado ao linfoma de Burkitt?

A

MYC, frequentemente ativado por translocação t(8;14).

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