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Related Concept Videos

Cancer Therapies02:49

Cancer Therapies

Cancer therapies are various modes of treatment, such as surgery, radiation therapy, and chemotherapy that are administered to cancer patients.
However, cancer treatments can pose several challenges, as therapies used to kill cancer cells are generally also toxic to normal cells. Moreover, cancer cells mutate rapidly and can develop resistance to chemical agents or radiation therapy. Besides, all types of cancer cells may not respond to the same therapy. Some cancer cells respond to one...
Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide02:44

Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide

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Cancer Prevention02:59

Cancer Prevention

Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
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Targeted Cancer Therapies02:57

Targeted Cancer Therapies

The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
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Electron Transport Chain: Complex I and II01:46

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The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
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Radical Autoxidation01:20

Radical Autoxidation

The oxidation of an organic compound in the presence of air or oxygen is called autoxidation. For example, cumene reacts with oxygen to form hydroperoxide. Autoxidation involves initiation, propagation, and termination steps. Many organic compounds are susceptible to autoxidation—especially ethers in the presence of oxygen, which form hydroperoxides. Even though this reaction is slow, old ether bottles contain small amounts of peroxide, which leads to laboratory explosions during ether...

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Naturally occurring hydroxytyrosol: synthesis and anticancer potential.

R Bernini1, N Merendino, A Romani

  • 1Università degli Studi della Tuscia, Dipartimento di Scienze e Tecnologie per l'Agricoltura, le Foreste, la Natura e l'Energia, Viterbo, Italy. berninir@unitus.it

Current Medicinal Chemistry
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PubMed
Summary

Hydroxytyrosol (HTyr), an olive polyphenol, exhibits antioxidant and anti-cancer properties. This review explores HTyr

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Area of Science:

  • Nutritional biochemistry and molecular oncology.
  • Focus on plant-derived compounds and their therapeutic potential.

Background:

  • Polyphenols, plant metabolites found in diet, are linked to chronic disease prevention.
  • Hydroxytyrosol (HTyr), an olive biophenol, possesses antioxidant, antiproliferative, pro-apoptotic, and anti-inflammatory activities.
  • These properties suggest HTyr's potential to counteract cancer hallmarks.

Purpose of the Study:

  • To review the synthesis of pure hydroxytyrosol (HTyr).
  • To evaluate the chemopreventive and chemotherapeutic potential of HTyr.
  • To elucidate the cellular and molecular mechanisms of HTyr's anti-cancer effects.

Main Methods:

  • Review of existing epidemiological and animal studies on polyphenols and cancer.
  • Analysis of scientific literature on hydroxytyrosol's biological activities.
  • Focus on cellular and molecular mechanisms targeting carcinogenesis.

Main Results:

  • Hydroxytyrosol (HTyr) demonstrates significant antioxidant, antiproliferative, and anti-inflammatory effects.
  • HTyr has the potential to counteract key cancer hallmarks.
  • The review details specific oncogenic and inflammatory signaling pathways modulated by HTyr.

Conclusions:

  • Hydroxytyrosol (HTyr) shows promise as a chemopreventive and chemotherapeutic agent against cancer.
  • Its multifaceted biological activities, particularly antioxidant and anti-inflammatory, are crucial for its anti-tumor properties.
  • Further research into HTyr's mechanisms could lead to novel cancer therapies.