Abstract:
:The toxin delivery system described herein would allow for the selective killing of tumor cells overexpressing the epidermal growth factor receptor (EGFR). Tumor cells often overexpress EGFR, because it allows the cells to divide more quickly. Past delivery systems targeting this receptor have been ineffective due to a lack of specificity that results in harm to surrounding tissue and damage to organs such as the liver. The technique presented here is different, because it presents the possibility of delivering toxin only to the tumor area and almost exclusively to the tumor cells. Delivery is localized to the tumor tissue through the use of EGF conjugated magnetoliposomes. These are liposomes that have magnets imbedded in their bilayer, allowing for selective heating and release of a drug when the magnetoliposome is under an oscillating magnetic field. To create an additional level of specificity, the delivery system will consist of two EGF-bound components that must interact within the endosome of a cell for the toxin to be released. If a tumor cell overexpresses EGFR by 5-fold, then each of its endosomes will have 5 times more receptors than those of a normal cell. Therefore, the tumor cell's endosome has a 5 times greater chance of containing one EGF-bound component and a 25 times greater chance of containing both components. Since both components are necessary for toxin release, the tumor cells will receive 25 times more toxin than the normal cells. Theoretically, it is possible to produce a three or four component system that would deliver 125 or 625 times more toxin to the tumor cells.
journal_name
Med Hypothesesjournal_title
Medical hypothesesauthors
Kullberg M,Mann K,Owens JLdoi
10.1016/j.mehy.2004.07.033keywords:
subject
Has Abstractpub_date
2005-01-01 00:00:00pages
468-70issue
3eissn
0306-9877issn
1532-2777pii
S0306-9877(04)00472-4journal_volume
64pub_type
杂志文章abstract::Circumstantial evidence links neuropathological changes in postencephalitic Parkinson's disease and amyotrophic lateral sclerosis on Guam to the 1918 influenza pandemic. Postencephalitic Parkinson's disease and amyotrophic lateral sclerosis have neuronal neurofibrillary tangles that anatomically correlate with clinica...
journal_title:Medical hypotheses
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journal_title:Medical hypotheses
pub_type: 杂志文章
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journal_title:Medical hypotheses
pub_type: 杂志文章
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更新日期:2016-08-01 00:00:00
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journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2018.08.028
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pub_type: 杂志文章
doi:10.1016/0306-9877(79)90072-0
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pub_type: 杂志文章
doi:10.1016/j.mehy.2010.10.035
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pub_type: 杂志文章
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journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1016/j.mehy.2018.04.024
更新日期:2018-07-01 00:00:00
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pub_type: 杂志文章
doi:10.1016/s0306-9877(76)80019-9
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journal_title:Medical hypotheses
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pub_type: 杂志文章
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journal_title:Medical hypotheses
pub_type: 信件
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pub_type: 杂志文章
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更新日期:2015-12-01 00:00:00
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journal_title:Medical hypotheses
pub_type: 杂志文章
doi:10.1054/mehy.2001.1511
更新日期:2002-02-01 00:00:00
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journal_title:Medical hypotheses
pub_type: 杂志文章
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journal_title:Medical hypotheses
pub_type: 杂志文章
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