Tumor-specific MAGE proteins as regulators of p53 function

María Fátima Ladelfa1, Leticia Yamila Peche, María Fernanda Toledo

  • 1Departamento de Química Biológica, FCEN, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina.

Cancer Letters
|June 6, 2012
PubMed

Insights

The tumor-specific Melanoma Antigen Gene (MAGE) family proteins regulate cell proliferation by influencing the p53 tumor suppressor. This review explores how MAGE proteins impact p53 functions.

Area of Science:

  • Oncology
  • Molecular Biology
  • Immunology

Background:

  • The Melanoma Antigen Gene (MAGE) family, discovered in 1991, has expanded knowledge regarding tumor-specific antigens.
  • Initially recognized for their potential as immunotherapy targets, MAGE proteins are now implicated in cell proliferation regulation.
  • Emerging research highlights MAGE proteins' role in controlling key cellular pathways.

Purpose of the Study:

  • To review the proposed mechanisms by which MAGE proteins influence the function of the p53 tumor suppressor.
  • To consolidate current understanding of MAGE proteins' role in cell proliferation pathways.

Main Methods:

  • Literature review of studies investigating MAGE protein functions.
  • Analysis of cellular mechanisms involving MAGE proteins and their interaction with p53.
  • Synthesis of data on MAGE protein-mediated regulation of cell proliferation pathways.

Main Results:

  • MAGE proteins play a significant role in regulating cell proliferation.
  • Some MAGE proteins have the ability to modulate the activity of the p53 tumor suppressor.
  • The interaction between MAGE proteins and p53 is a key mechanism influencing cellular processes.

Conclusions:

  • MAGE proteins are crucial regulators of cell proliferation, partly through their interaction with p53.
  • Understanding MAGE-MAGE-I-p53 interactions is vital for advancing cancer research and potential therapies.
  • Further investigation into MAGE protein functions can reveal new therapeutic targets.

Related Concept Videos

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...
Mitogens and the Cell Cycle02:38

Mitogens and the Cell Cycle

Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...
Interactions Between Signaling Pathways01:19

Interactions Between Signaling Pathways

Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
PI3K/mTOR/AKT Signaling Pathway01:22

PI3K/mTOR/AKT Signaling Pathway

The mammalian target of rapamycin  (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1  (mTORC1) and mTOR complex 2  (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast,  mTORC2 consists of a rapamycin-insensitive companion...
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.