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BIOL 101 Individual Assignment 3 Answers Liberty University | Complete Solution
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BIOL 101 Individual Assignment 3 Answers Liberty University | Complete Solution

 

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Individual Assignment 3 – 10 Discoveries in the War on Cancer

  • Virologists are modifying lentiviruses as vectors for carrying proto-oncogenes into cancer-transformed cells in culture. They are developing this virus for inserting the ras proto-oncogene directly into its correct location in the genome. The correct ras gene will already be linked to human DNA on either side of it and complexed with a recombination enzyme that will insert it into its correct location within the human genome. At the same time, the recombination enzyme will excise the defective oncogenic form of ras. The cells in culture should again come under normal hormonal control and require extra-cellular signals in order to continue dividing.
  • Malignant brain tumors in adults are fast-growing cancers with median survival rates of 15 months, even with aggressive treatment. Researchers have been searching for genetic “signatures” (characteristic groups of cancer-causing genes) that could help in defining the kind of brain tumor the patient has. They hope to be better able to predict the course of the disease andmore accurately design the patient’s course of treatment.
  • Immunologists are investigating ways to destroy lymphocytes (white blood cells of the immune system) that have become cancerous (lymphomas). A current drug Rituximab contains antibodies that bind to the surfaces of these lymphocytes setting them up for destruction by the cancer patient’s own immune system. They are currently seeking ways to modify the antibody’s structure so that it will attract the cancer patient’s “natural killer” (NK) cells to the lymphocytes. Success of this project will bring a multi-faceted immune response against lymphomas and hasten destruction.
  • Organic chemists are exploring structural variations of the organic compound avobenzone (1-[4-Methoxyphenyl]-3-[4-tert-butylphenyl] propane-1,3-dione) for inclusion in sunblock products. Avobenzone is known for its ability to absorb a broad spectrum of ultra-violet radiations including UVB light (known to enhance the frequency of basal cell and squamous cell carcinomas [skin cancers]); and UVA rays thought to increase the frequency of melanoma cancers. New variations in the structure of avobenzone are hoped to retain the ability to absorb harmful UV radiation while having an increased stability in the presence of that radiation.
  • Biochemists are analyzing the many, many components of red meat (beef and pork) to determine which component, if any, will cause increased colorectal cancer rates in mice when the component is administered orally. Studies have shown that higher colorectal cancer rates in humans are associated with higher consumption rates of red meat.
  • Molecular biologists have developed a new sequence of human genes called an ankyrin insulator sequence. A new corrected or therapeutic gene is placed within this sequence. Its role is to create an active area on a human chromosome where the new gene can work efficiently no matter what chromosome it lands on.
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BIOL 101 Individual Assignment 3 Answers Liberty University | Complete Solution
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  • Submitted On 28 Jul, 2018 03:01:10
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1. Malignant brain tumors in adults are fast-growing cancers with median survival rates of 15 months, even with aggressive treatment. Researchers have been searching for genetic “signatures” (characteristic groups of cancer-causing genes) that could help in defining the kind of brain tumor the patient has. They hope to be better able to predict the course of the disease and the patient’s response to treatment. 2. Tobacco smoking is the leading cause of preventable deaths worldwide. It is a risk factor for lung cancer and several other t...
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