Oncology
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Typically induces cell transformation | Proto-oncoogene
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The development of cancer cells.Cancer cells commonly inactivate inhibitor growth signals, evade apoptosis, have a limitless replicative potential, invade tissue, a sustained mutagenesis and undergo angiogenesis | Oncogenesis
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Growth factors/receptors, Signal Transduction pathways, Transcription factors, Cell cyle control proteins, DNA repair enzymes, Apoptosis Proteins | Examples of oncogenes
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Point mutation, Chromosomal translocation, Multiple copies of DNA, Frame shift mutation | Mechanisms in which proto-ocogenes become oncogenes
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Regulates the G1 phase of the cell cycle | Cyclin D
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Cyclin D binds to | CDK 4/6
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Inhibitors of the cell cycle. Help to control the progession through the cell cycle | Cylin Dependent Inhibitors (CDI)
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The formation of cyclin D/CDK 4/6 complex is inhibited by | p15, p16, p18, p19
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Most cyclin/cdk complexes are inhibited by | p21
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p21 is activated by | p53
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This monitors DNA damage and activates p21 to inhibit cell division | p53
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A monomeric G protein and a proto-oncogene | Ras
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An example of a tumor suppressor | Retinoblastoma (Rb)
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DNA repair is initiated by | p53
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Tumor suppressor genes become oncogenic by | Deletions, Point mutations, DNA methylation
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A loss-of-function mutation is an example of | tumor suppressors
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A gain-of-function mutation is an example of | proto-oncogenes
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Ras directly activates | Raf
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MEK directly activates | MAPK
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MAPK activates | Fos (a transcription factor)
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Ras induces cell proliferation | True
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Hedgehog is a proto-oncogene | True
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The EGF receptor is an example of a proto-oncogene | True
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The mitochondrial pathway and the membrane receptor pathway are two type of mechanisms that induce | Apoptosis
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Activation of caspase-8 induces apoptosis | True
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Activation of the ... receptor activate apoptosis through the activation of caspase-8 | Death
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The activation of the ... pathway is elicited through the activation of Apaf-1, Cyt c, ATP, and pro-caspase-9 | Mitochondrial
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Bcl-2 is an | Anti-apoptotic protein
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Bax is a | Pro-apoptotic protein
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The idea that more than one mutation is required for a normal cell to become a tumor | Multiple Hit Hypothesis
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Benzopyrene (cigarettes), Aflatoxin B, Reactive oxygen species, DNA crosslinking agents, and Alkylating agents are chemicals that can cause | DNA damage
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The inability to repair thymine dimers which are caused by UV irradiation | Xeroderma pigmentosum
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Multiple TTAGGG repeats found at the ends of chromosomes | Telomeres
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The enzyme responsible for creating telomeres and is often inactivated in adult cells but activated during oncogenesis | Telomerase
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Defined as a limited capacity to divide before cells enter a non-proliferate state | Senescence
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Caused by a translocation of the myc gene from chromosome 8 to 14 | Burkitt Lymphoma
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Caused by a translocation between chromosomes 9 and 22 | Chronic Myelogenous Leukemia
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