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Regulated Protein Degradation02:58

Regulated Protein Degradation

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It is vital to regulate the activity of enzymatic as well as non-enzymatic proteins inside the cell. This can be achieved either through creating a balance between their rate of synthesis and degradation or regulating the intrinsic activity of the protein. Both these regulation mechanisms play an essential role in the normal functioning of cells.
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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.
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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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The Proteasome01:13

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Because the DNA segments are cut and reorganized in a direction-specific manner, site-specific recombination has emerged as an efficient genetic engineering technique. Flippase and Cyclization recombinases or Flp and Cre, respectively, are two members of the tyrosine recombinase family derived from bacteriophages, that are used to mediate site-specific DNA insertions, deletions, and targeted expression of proteins in mammalian cell lines.
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Conditional PROTAC: Recent Strategies for Modulating Targeted Protein Degradation.

Junhyeong Yim1,2, Junyoung Park1,3, Gabin Kim4

  • 1Department of Chemistry, Kangwon National University, Chuncheon, 24341, Republic of Korea.

Chemmedchem
|July 12, 2024
PubMed
Summary

Proteolysis-targeting chimeras (PROTACs) offer targeted protein degradation via the ubiquitin-proteasome system (UPS). This review explores chemical strategies for spatio-temporal control to enhance PROTAC efficacy and minimize side effects.

Keywords:
PROTACSpatial PROTACSpatiotemporal PROTACTargeted Protein Degradation (TPD)Temporal PROTAC

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Drug Discovery

Background:

  • Proteolysis-targeting chimeras (PROTACs) utilize the ubiquitin-proteasome system (UPS) for targeted protein degradation.
  • PROTACs show promise for undruggable targets but face challenges with off-tissue effects and side effects.
  • Improving PROTAC efficacy necessitates strategies for precise spatial and temporal control.

Purpose of the Study:

  • To review chemical strategies for achieving cell type-specific (spatio-) and time-specific (temporal-) protein degradation using PROTACs.
  • To provide insights into overcoming limitations of current targeted protein degradation strategies.
  • To highlight the potential of spatio-temporal PROTACs in diverse disease contexts.

Main Methods:

  • Literature review of chemical strategies for spatio-temporal PROTAC development.
  • Analysis of approaches for modulating PROTAC activity based on cellular location and timing.
  • Synthesis of current research on enhancing PROTAC specificity and efficacy.

Main Results:

  • Identification of various chemical approaches enabling spatial and temporal control of PROTAC-induced degradation.
  • Demonstration of how spatio-temporal modulation can mitigate off-tissue effects and improve therapeutic windows.
  • Highlighting the versatility of PROTAC technology through targeted degradation strategies.

Conclusions:

  • Spatio-temporal control represents a key advancement in PROTAC technology.
  • Chemical strategies for precise degradation offer a path to overcome current PROTAC limitations.
  • Targeted protein degradation with enhanced specificity holds significant therapeutic potential.