Related Experiment Video

Updated: May 9, 2026

Chemical Dimerization-Induced Protein Condensates on Telomeres
08:52

Chemical Dimerization-Induced Protein Condensates on Telomeres

Published on: April 12, 2021

PML, SUMOylation, and Senescence

Lisa Ivanschitz1, Hugues De Thé, Morgane Le Bras

  • 1University Paris Diderot, Sorbonne Paris Cité, Hôpital St. Louis , Paris , France ; INSERM UMR 944, Equipe labellisée par la Ligue Nationale contre le Cancer, Institut Universitaire d'Hématologie, Hôpital St. Louis , Paris , France ; CNRS UMR 7212, Hôpital St. Louis , Paris , France.

Frontiers in Oncology
|July 13, 2013
PubMed

Insights

Promyelocytic leukemia (PML) protein

Area of Science:

  • Cellular Biology
  • Oncology
  • Molecular Biology

Background:

  • Promyelocytic leukemia (PML) protein has remained enigmatic since its discovery 25 years ago.
  • PML is implicated in oncogenic PML/RARA fusion, intranuclear domain formation, and regulation of cell death and senescence.
  • SUMOylation (Small Ubiquitin-like Modifierylation) is closely linked to PML functions.

Purpose of the Study:

  • To review the complex interplay between PML, senescence, and SUMOylation.
  • To elucidate the role of these interactions in cellular transformation and oncogenesis.

Main Methods:

  • Literature review of studies on PML, senescence, and SUMOylation.
  • Analysis of reciprocal interactions and their impact on cellular processes.
  • Focus on the context of cancer development.

Main Results:

  • PML protein is central to processes including senescence induction and cell death.
  • SUMOylation dynamically regulates PML activity and localization.
  • Aberrant PML/RARA fusion protein drives oncogenesis through disrupted cellular control.

Conclusions:

  • The reciprocal interactions between PML, senescence, and SUMOylation are critical for maintaining cellular homeostasis.
  • Dysregulation of these pathways, particularly in PML/RARA fusion contexts, contributes significantly to cellular transformation and leukemia development.
  • Further research into these interactions may reveal novel therapeutic targets for promyelocytic leukemia.
Keywords:
PMLSUMOp53senescencetumor suppression

More Related Videos

Assays for the Degradation of Misfolded Proteins in Cells10:56

Assays for the Degradation of Misfolded Proteins in Cells

Published on: August 28, 2016

In Vivo Detection and Analysis of Rb Protein SUMOylation in Human Cells09:40

In Vivo Detection and Analysis of Rb Protein SUMOylation in Human Cells

Published on: November 2, 2017

Related Concept Videos

Covalently Linked Protein Regulators02:04

Covalently Linked Protein Regulators

Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
These groups modify specific amino acids in a protein.
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...
Regulation of Expression at Multiple Steps01:23

Regulation of Expression at Multiple Steps

The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the addition of a...
Nuclear Export of mRNA02:31

Nuclear Export of mRNA

Before mRNAs are exported to the cytoplasm, it is crucial to check each mRNA for structural and functional integrity. Eukaryotic cells use several different mechanisms, collectively known as mRNA surveillance, to look for irregularities in mRNAs. Irregular or aberrant mRNA are rapidly degraded by various enzymes. If a defective mRNA escapes the surveillance, it would be translated into a protein which would either be non-functional or not function properly. One of the primary irregularities in...
mRNA Stability and Gene Expression02:51

mRNA Stability and Gene Expression

The structure and stability of mRNA molecules regulates gene expression, as mRNAs are a key step in the pathway from gene to protein. In eukaryotes, the half-life of mRNA varies from a few minutes up to several days. mRNA stability is essential in growth and development. The absence of the proteins regulating its stability, such as tristetraprolin in mice, can cause systemic issues, including bone marrow overgrowth, inflammation, and autoimmunity.
Cis-acting Elements involved in mRNA stability
Nonsense-mediated mRNA Decay02:27

Nonsense-mediated mRNA Decay

The Upf proteins that carry out nonsense-mediated decay (NMD) are found in all eukaryotic organisms, including humans. Each protein has an individual role, but they need to work in collaboration. Upf1 is an ATP-dependent RNA helicase that unwinds the RNA helix. Because Upf1 can unwind any RNA, Upf2 and Upf3 are required to help Upf1 discriminate between nonsense and normal mRNAs.
Usually, Upf3 binds to an Exon Junction Complex (EJC) at mRNA splice sites. If a ribosome fully translates the mRNA,...