Modulation of apoptosis to reverse chemoresistance

Gil Mor1, Michele K Montagna, Ayesha B Alvero

  • 1Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA.

Insights

Cancer cells disrupt natural cell death (apoptosis) to grow. This chapter explores apoptosis in ovarian cancer and phenoxodiol

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Research

Background:

  • Neoplastic transformation involves interference with innate apoptotic activity.
  • Apoptosis plays a crucial role in tumor formation and progression.
  • Modulating apoptosis is a potential cancer treatment strategy.

Purpose of the Study:

  • To discuss the role of apoptosis in ovarian cancer.
  • To examine phenoxodiol as a model for apoptosis regulation.
  • To evaluate phenoxodiol's potential as a chemosensitizer for chemoresistant ovarian cancer.

Main Methods:

  • Literature review on apoptosis in ovarian cancer.
  • Analysis of phenoxodiol's mechanism of action.
  • Discussion of preclinical and clinical data regarding phenoxodiol.

Main Results:

  • Apoptosis interference is a key feature of ovarian cancer.
  • Phenoxodiol demonstrates potential in regulating apoptotic pathways.
  • Phenoxodiol may enhance chemosensitivity in resistant ovarian cancer cells.

Conclusions:

  • Targeting apoptosis is a promising avenue for ovarian cancer therapy.
  • Phenoxodiol represents a potential therapeutic agent for chemoresistant ovarian cancer.
  • Further research into phenoxodiol's role as a chemosensitizer is warranted.

Related Concept Videos

Treatment Resistant Cancers02:56

Treatment Resistant Cancers

Cancer is the second leading cause of death in the United States. A cancer cell is genetically unstable and hence can mutate faster. They can also modify their microenvironment and escape immune surveillance. The difficulties in treating cancer are further compounded by the emergence of rapid resistance to anticancer drugs. The most common ways to attain resistance in cancer cells include alteration in drug transport and metabolism, modification of drug target, elevated DNA damage response, or...
The Intrinsic Apoptotic Pathway01:31

The Intrinsic Apoptotic Pathway

Internal cellular stress, such as cellular injury or hypoxia, triggers intrinsic apoptosis. The B-cell lymphoma 2 (Bcl-2) family of proteins are the primary regulators of the intrinsic apoptotic pathway. For example, during DNA damage, checkpoint proteins, such as Ataxia Telangiectasia Mutated (ATM protein) and Checkpoints Factor-2 (Chk2) proteins, are activated. These proteins phosphorylate p53 which further activates pro-apoptotic proteins, such as Bax, Bak, PUMA, and Noxa, and inhibits...
Apoptosis01:30

Apoptosis

Apoptosis is a combination of two Greek words, 'apo' and 'ptosis,' meaning separation and falling off, respectively. Hippocrates used this word to describe gangrene, which was caused due to bandaging of fractured bones. Apoptosis was distinguished from necrosis in 1970 when John Kerr reported observations of morphological changes occurring during apoptosis. During one experiment, he observed that the disruption of blood supply to the liver tissue resulted in a size reduction of the tissue.
Combination Therapies and Personalized Medicine02:50

Combination Therapies and Personalized Medicine

Combining two or more treatment methods increases the life span of cancer patients while reducing damage to vital organs or tissue from the overuse of a single treatment. Combination therapy also targets different cancer-inducing pathways, thus reducing the chances of developing resistance to treatment.
The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...
The Extrinsic Apoptotic Pathway01:17

The Extrinsic Apoptotic Pathway

The extrinsic apoptotic pathway is initiated when extracellular death-inducing signals, such as specific cytokines, activate the death receptors expressed on the cell surface. The immune cells involved in this pathway are natural killer cells (NK cells) and cytotoxic T-lymphocytes. NK cells are critical in innate immune response, while cytotoxic T-lymphocytes are associated with adaptive immune response. These cells recognize specific receptors expressed on the altered cells and activate...
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.
There are several types of targeted therapies against specific...