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Etoposide, sold under the brand name Vepesid among others, is a chemotherapy medication used for the treatments of a number of types of cancer including testicular cancer, lung cancer, lymphoma, leukemia, neuroblastoma, and ovarian cancer. [2]
Etoposide, a semi-synthetic derivative of epipodophyllotoxin is commonly used to study this apoptotic mechanism and include: Etoposide; Teniposide; Both etoposide and teniposide are naturally occurring semi-synthetic derivatives of podophyllotoxins and are important anti-cancer drugs that function to inhibit TopII activity. [67]
An Hsp90 inhibitor is a substance that inhibits that activity of the Hsp90 heat shock protein.Since Hsp90 stabilizes a variety of proteins required for survival of cancer cells, these substances may have therapeutic benefit in the treatment of various types of malignancies. [2]
For example, ring A is not essential to antimitotic activity. Aromatization of ring C leads to loss of activity, possibly from ring E no longer being placed on the axial position. In addition, the stereochemistry at C-2 and C-3 configures a trans-lactone, which has more activity than the cis counterpart.
This occurs by a mechanism similar to steroid synthesis in vertebrates. Ecdysone and 20-hydroxyecdysone regulate larval molts, onset of puparium formation, and metamorphosis. As these hormones are hydrophobic, they traverse lipid membranes and permeate the tissues of an organism. Indeed, the ecdysone receptor is an intracellular protein.
This mechanism leads to specific patterns of damage in DNA, which can kill cancer cells but can also increase the risk of secondary tumors developing. [ 6 ] Platinum-based antineoplastic agents are sometimes described as "alkylating-like" due to similar effects as alkylating antineoplastic agents , although they do not have an alkyl group.
For example, the separation of fingers and toes in a developing human embryo occurs because cells between the digits undergo apoptosis. Unlike necrosis, apoptosis produces cell fragments called apoptotic bodies that phagocytes are able to engulf and remove before the contents of the cell can spill out onto surrounding cells and cause damage to ...
Because of their mechanism of action, phorbol esters can be used to study tumor proliferation and pain response. [citation needed] TPA is most commonly used in the laboratory to induce a cellular response. [citation needed] For example, TPA can be used to measure response to pain and test compounds that may mitigate the inflammatory response. [22]
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