Control of neoplastic cell proliferation and differentiation by restoration of 4-hydroxynonenal physiological

V M Fazio1, M Rinaldi, S Ciafrè

  • 1Institute of General Pathology, Catholic University S.C., Rome, Italy.

Insights

Cellular lipid peroxidation products, like 4-hydroxynonenal (HNE), are low in cancer cells. Restoring physiological HNE levels may inhibit cancer cell proliferation and promote re-differentiation.

Area of Science:

  • Biochemistry
  • Cell Biology
  • Oncology

Background:

  • Cellular lipid peroxidation inversely correlates with cell proliferation and neoplastic transformation.
  • Anaplastic cell lines exhibit very low or undetectable levels of lipid peroxidation products.
  • Lipid peroxidation products influence key biochemical pathways and intracellular signaling at physiological concentrations.

Purpose of the Study:

  • To critically review the effects of physiological concentrations of 4-hydroxynonenal (HNE) on normal and neoplastic cell lines.
  • To summarize existing research on the role of HNE in cellular processes.

Main Methods:

  • Literature review and critical analysis of existing studies.
  • Synthesis of data on lipid peroxidation, HNE, cell proliferation, and neoplastic transformation.

Main Results:

  • Physiological concentrations of HNE demonstrate significant effects on cellular pathways.
  • Restoration of HNE levels in neoplastic cells can inhibit proliferation.
  • HNE may play a role in modulating cell re-differentiation in cancer.

Conclusions:

  • HNE is a key mediator in cellular responses to lipid peroxidation.
  • Targeting HNE levels presents a potential therapeutic strategy for neoplastic diseases.
  • Further research is warranted to fully elucidate HNE's role in cancer biology.

Related Concept Videos

Negative Regulator Molecules01:23

Negative Regulator Molecules

Positive regulators allow a cell to advance through cell cycle checkpoints. Negative regulators have an equally important role as they terminate a cell’s progression through the cell cycle—or pause it—until the cell meets specific criteria.
Replicative Cell Senescence02:15

Replicative Cell Senescence

Replicative cell senescence is a property of cells that allows them to divide a finite number of times throughout the organism's lifespan while preventing excessive proliferation. Replicative senescence is associated with the gradual loss of the telomere — short, repetitive DNA sequences found at the end of the chromosomes. Telomeres are bound by a group of proteins to form a protective cap on the ends of chromosomes. Embryonic stem cells express telomerase — an enzyme that adds the telomeric...
Abnormal Proliferation02:23

Abnormal Proliferation

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the daughter...
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
Regulation of Angiogenesis and Blood Supply01:24

Regulation of Angiogenesis and Blood Supply

Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits.  Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl hydroxylase and factor...
Liver Regeneration01:24

Liver Regeneration

The liver is an important organ in vertebrates that plays an essential role in metabolism. It is also responsible for storing and redistributing nutrients such as carbohydrates, fats, and vitamins in the body. Additionally, the liver releases bile salts which are critical for digesting food and eliminating toxic metabolites from the body.
Cells of Liver
The liver comprises four major types of cells— hepatocytes, stellate, Kupffer, and sinusoidal endothelial cells. The hepatocytes are large...