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RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...
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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.
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Updated: Jun 14, 2025

High-Throughput Cellular Profiling of Targeted Protein Degradation Compounds Using HiBiT CRISPR Cell Lines
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Engineering artificial non-coding RNAs for targeted protein degradation.

Congcong Cao1, Aolin Li2, Chaojie Xu3

  • 1Guangdong Provincial Key Laboratory of Systems Biology and Synthetic Biology for Urogenital Tumors, Shenzhen Institute of Translational Medicine, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Synthetic Biology Research Center, Health Science Center, Shenzhen University, Shenzhen, China.

Nature Chemical Biology
|August 30, 2024
PubMed
Summary
This summary is machine-generated.

Artificial long non-coding RNAs (alncRNAs) offer a new method for targeted protein degradation. These alncRNAs effectively degrade oncogenic proteins, showing promise for cancer therapy development.

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • RNA Therapeutics

Background:

  • Targeted protein degradation is a key drug development strategy.
  • Current methods using protein-based chimeras have limitations in genetic manipulation.
  • Long non-coding RNAs (lncRNAs) offer an alternative for modulating cellular pathways and protein degradation.

Purpose of the Study:

  • To introduce a novel strategy using artificial lncRNAs (alncRNAs) for precise targeted protein degradation.
  • To demonstrate the efficacy of alncRNAs in degrading specific oncogenic and tumor-related proteins.
  • To evaluate the potential of alncRNAs in reducing malignant cellular phenotypes.

Main Methods:

  • Design and synthesis of artificial lncRNAs (alncRNAs) by integrating RNA aptamers and HOTAIR sequences.
  • Application of alncRNAs to target and facilitate ubiquitination and degradation of specific proteins (c-MYC, NF-κB, ETS-1, KRAS, EGFR).
  • In vitro and in vivo studies to assess the impact of alncRNAs on malignant phenotypes.

Main Results:

  • The developed alncRNAs specifically target and induce degradation of key oncogenic proteins.
  • Demonstrated reduction of malignant phenotypes in cellular models, both in vitro and in vivo.
  • alncRNAs exhibit efficiency, adaptability, and versatility in targeted protein degradation.

Conclusions:

  • Artificial lncRNAs provide an effective and adaptable platform for targeted protein degradation.
  • This approach enhances the understanding of lncRNA-mediated degradation mechanisms.
  • alncRNAs represent a promising strategy for developing novel targeted cancer therapies.