PathWhiz ID | Pathway | Meta Data |
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PW122364View Pathway |
Irinotecan MetabolismMus musculus
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Creator: Eponine Oler Created On: March 06, 2019 at 16:36 Last Updated: March 06, 2019 at 16:36 |
PW122366View Pathway |
Irinotecan MetabolismRattus norvegicus
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Creator: Eponine Oler Created On: March 06, 2019 at 16:36 Last Updated: March 06, 2019 at 16:36 |
PW122355View Pathway |
Irinotecan MetabolismHomo sapiens
Irinotecan, branded as Camptosar, Campto, Onivyde and others, is a cancer medication used to treat colon and small cell lung cancers, alone or with other drugs.
Irinotecan can be processed by the cytochrome P450 3A4 enzyme, producing both the side product glutaral, as well as a compound called NPC. the NPC can then be catalyzed by liver carboxylesterase 1 to form 7-ethyl-10-hydroxy-camptothecin, or SN-38. Alternatively, irinotecan can directly form SN-38 via catalysis by liver carboxylesterase 1.
After its formation, SN-38 is converted to SN-38 glucuronide by UDP-glucuronosyltransferase 2B11. This can then be converted back to SN-38 in the lysosome by beta-glucuronidase, or can be excreted as the end product of the pathway.
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Creator: Eponine Oler Created On: March 01, 2019 at 15:38 Last Updated: March 01, 2019 at 15:38 |
PW122367View Pathway |
Irinotecan MetabolismDanio rerio
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Creator: Eponine Oler Created On: March 06, 2019 at 16:36 Last Updated: March 06, 2019 at 16:36 |
PW122379View Pathway |
Irinotecan MetabolismCaenorhabditis elegans
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Creator: Eponine Oler Created On: March 11, 2019 at 20:47 Last Updated: March 11, 2019 at 20:47 |
PW000576View Pathway |
Irinotecan Metabolism PathwayHomo sapiens
Irinotecan is a medication commonly sold as Camptosar, used to stop the growth of cancer cells, and to stop the spread of cancer cells in the human body. Specifically cancers of the rectum and of the colon. Commonly used in combination with chemotherapy. Irinotecan works through its active metabolite, SN-38, which inhibits the action of topoisomerase I. This enzyme is responsible for creating single-strand breaks in DNA during replication. These single-strands are reversible. SN-38 and Irinotecan binding to topoisomerase I-DNA complex results in the prevention of religation the DNA strand mentioned above, which creates double-strand DNA breakage. This breakage leads to cell death. Irinotecan is taken orally, but can also be injected.
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Creator: WishartLab Created On: September 11, 2013 at 22:32 Last Updated: September 11, 2013 at 22:32 |
PW125961View Pathway |
drug action
Irinotecan Topoisomerase Inhibitor Action PathwayHomo sapiens
Irinotecan is a semi-synthetic analogue of camptothecin which is a topoisomerase IB inhibitor. It is used to treat colorectal cancer. It's mechanism of action against topoisomerase I is that it forms a tertiary complex between the DNA and the topoisomerase I enzyme causing double strand breaks. It first has to be metabolized by liver carboxylesterase 1 into SN-38, which is the active metabolite that inhibits topoisomerase. SN-38 can be inactivated by UGT1A1 into SN-38 glucuronide which upregulated in some individuals leading to irinotecan resistance. Individuals might also have a reduced function variant of UGT1A1 which can lead to increased metabolism of irinotecan and leads to irinotecan toxicity. Toxicity of irinotecan leads to gastrointestinal complications as well as nausea, vomiting and headaches. Irinotecan is administered usually intravenously as a solution.
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Creator: Kristen Yee Created On: May 07, 2021 at 16:22 Last Updated: May 07, 2021 at 16:22 |
PW144995View Pathway |
drug action
Iron Dextran Drug Metabolism Action PathwayHomo sapiens
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Creator: Ray Kruger Created On: October 07, 2023 at 14:53 Last Updated: October 07, 2023 at 14:53 |
PW145461View Pathway |
drug action
Iron Drug Metabolism Action PathwayHomo sapiens
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Creator: Ray Kruger Created On: October 07, 2023 at 15:52 Last Updated: October 07, 2023 at 15:52 |
PW146503View Pathway |
drug action
Iron isomaltoside 1000 Drug Metabolism Action PathwayHomo sapiens
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Creator: Ray Kruger Created On: October 07, 2023 at 18:21 Last Updated: October 07, 2023 at 18:21 |