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The nucleolus is the most prominent substructure of the nucleus. When it was first discovered, it was considered to be an isolated organelle that forms fibrils and granules. In 1931, the relationship between the nucleolus and chromosomes was first described by Heitz. He observed that the appearance and size of nucleolus varies depending on the stage of the cell cycle. He also noticed constricted regions on different chromosomes clustered together at definite cell cycle stages. These regions,...
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Updated: Sep 11, 2025

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Ribosome Biogenesis and Function in Cancer: From Mechanisms to Therapy.

Kezia Gitareja1,2, Shalini S Chelliah1,3, Elaine Sanij1,2,3,4,5

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Ribosome biogenesis, essential for protein synthesis, is frequently dysregulated in cancer. Targeting this process offers a promising new avenue for cancer therapy development.

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Area of Science:

  • Molecular Biology
  • Cell Biology
  • Oncology

Background:

  • Ribosome biogenesis is a complex, multi-step process crucial for protein synthesis.
  • This process involves RNA polymerase I (Pol I) and Pol III transcribing ribosomal RNA (rRNA) genes, followed by processing, modification, and assembly.
  • The PI3K/RAS/MYC network tightly regulates ribosome biogenesis, and its deregulation is common in various cancers, leading to increased synthesis rates.

Purpose of the Study:

  • To summarize the current understanding of ribosome biogenesis and function dysregulation in cancer.
  • To evaluate the clinical development of therapies targeting ribosome biogenesis.
  • To explore novel therapeutic targets in this rapidly advancing field.

Main Methods:

  • Literature review of current research on ribosome biogenesis in cancer.
  • Analysis of clinical trial data for ribosome-targeting therapies.
  • Identification and discussion of emerging therapeutic targets.

Main Results:

  • Dysregulation of ribosome biogenesis and mRNA translation is a key factor in cancer development.
  • Increased ribosome synthesis, mRNA translation, and protein synthesis rates are observed in cancerous cells.
  • The ribosome is emerging as a significant and promising therapeutic target for cancer treatment.

Conclusions:

  • Ribosome biogenesis and function are critically implicated in cancer pathogenesis.
  • Targeting ribosome biogenesis represents a viable therapeutic strategy for cancer.
  • Further research into novel targets holds promise for future cancer therapies.