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Related Concept Videos

Gene Therapy00:59

Gene Therapy

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Gene therapy is a technique where a gene is inserted into a person’s cells to prevent or treat a serious disease. The added gene may be a healthy version of the gene that is mutated in the patient, or it could be a different gene that inactivates or compensates for the patient’s disease-causing gene. For example, in patients with severe combined immunodeficiency (SCID) due to a mutation in the gene for the enzyme adenosine deaminase, a functioning version of the gene can be...
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Cancer-Critical Genes II: Tumor Suppressor Genes01:05

Cancer-Critical Genes II: Tumor Suppressor Genes

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Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
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Experimental RNAi02:15

Experimental RNAi

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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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RNA Interference01:23

RNA Interference

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RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
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Transcription Attenuation in Prokaryotes02:42

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Transcriptional attenuation occurs when RNA transcription is prematurely terminated due to the formation of a terminator mRNA hairpin structure.  Bacteria use these hairpins to regulate the transcription process and control the synthesis of several amino acids including histidine, lysine, threonine, and phenylalanine. Transcription attenuation takes place in the non-coding regions of mRNA.
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In-vitro Mutagenesis01:16

In-vitro Mutagenesis

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To learn more about the function of a gene, researchers can observe what happens when the gene is inactivated or “knocked out,” by creating genetically engineered knockout animals. Knockout mice have been particularly useful as models for human diseases such as cancer, Parkinson’s disease, and diabetes.
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Updated: Jun 22, 2025

TRUE Gene Silencing: Screening of a Heptamer-type Small Guide RNA Library for Potential Cancer Therapeutic Agents
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Suppressor tRNA in gene therapy.

Jingjing Ruan1,2, Xiaoxiao Yu2, Huixia Xu3

  • 1The Children's Hospital, National Clinical Research Center for Child Health, Zhejiang University School of Medicine, Liangzhu Laboratory, Hangzhou, 310000, China.

Science China. Life Sciences
|June 26, 2024
PubMed
Summary
This summary is machine-generated.

Suppressor transfer RNAs (tRNAs) offer a promising gene therapy approach for nonsense mutation diseases by enabling the production of full-length proteins. This review explores their mechanism, applications, and therapeutic potential.

Keywords:
PTCgene therapynonsense mutationreadthroughsuppressor tRNA

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Area of Science:

  • Molecular Biology
  • Genetics
  • Biotechnology

Background:

  • Nonsense mutations lead to premature termination codons (PTCs), resulting in truncated, nonfunctional proteins.
  • These mutations cause various genetic disorders, highlighting the need for effective therapeutic strategies.
  • Suppressor transfer RNAs (tRNAs) are key molecules in cellular protein synthesis.

Purpose of the Study:

  • To review the mechanism and development of suppressor tRNAs for gene therapy.
  • To compare suppressor tRNAs with alternative readthrough therapies.
  • To discuss the clinical potential, limitations, and applications of suppressor tRNAs.

Main Methods:

  • Review of existing literature on suppressor tRNA technology.
  • Comparative analysis of different readthrough therapeutic approaches.
  • Summarization of in vitro and in vivo applications of suppressor tRNAs.

Main Results:

  • Suppressor tRNAs can recognize PTCs, enabling ribosome readthrough and synthesis of full-length proteins.
  • This technology holds significant promise for treating genetic diseases caused by nonsense mutations.
  • Various applications in both laboratory and clinical settings have been explored.

Conclusions:

  • Suppressor tRNAs represent a viable therapeutic strategy for nonsense mutation diseases.
  • Further research is needed to overcome limitations and optimize clinical application.
  • This approach offers new insights into the treatment of genetic disorders stemming from PTCs.