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Related Concept Videos

Centrosome Duplication02:25

Centrosome Duplication

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The primary microtubule organizing center (MTOC) in animal cells is the centrosome. A centrosome has two cylindrical centrioles at its core. Each centriole consists of nine sets of three microtubules held together by proteins. The centrioles are positioned at right angles to each other and surrounded by a shapeless protein cloud called the pericentriolar matrix, or pericentriolar material (PCM).
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Cancer arises from mutations in the critical genes that allow healthy cells to escape cell cycle regulation and acquire the ability to proliferate indefinitely. Though originating from a single mutation event in one of the originator cells, cancer progresses when the mutant cell lines continue to gain more and more mutations, and finally, become malignant. For example, chronic myelogenous leukemia (CML) develops initially as a non-lethal increase in white blood cells, which progressively...
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Early diagnosis and treatment can often cure cancer. However, even with treatment, residual cells called cancer stem cells (CSC) might remain, often causing tumor recurrence. These cancer stem cells possess the potential for self-renewal and multi-lineage differentiation and are often responsible for the therapeutic resistance displayed in most cancers.
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The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
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Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
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Related Experiment Video

Updated: Dec 3, 2025

Live Cell Imaging to Assess the Dynamics of Metaphase Timing and Cell Fate Following Mitotic Spindle Perturbations
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Centrosome amplification: a quantifiable cancer cell trait with prognostic value in solid malignancies.

Karuna Mittal1, Jaspreet Kaur1, Meghan Jaczko1

  • 1Department of Biology, Georgia State University, 100 Piedmont Ave, Atlanta, GA, 30303, USA.

Cancer Metastasis Reviews
|October 27, 2020
PubMed
Summary
This summary is machine-generated.

Centrosome amplification (CA) is a key cancer hallmark linked to poor prognosis. Quantifying CA using a novel score may predict cancer recurrence, metastasis, and overall patient outcomes.

Keywords:
Centrosome amplificationDCISFormalin-fixed paraffin-embedded tissue sectionsPrognostic biomarkerSolid tumors

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Area of Science:

  • Oncology
  • Cell Biology
  • Cancer Research

Background:

  • Centrosome amplification (CA) is a common feature in cancers, associated with abnormal chromosome numbers and poor clinical outcomes.
  • CA can disrupt cell division, leading to chromosome instability (CIN), which drives tumor development and spread.
  • Advances in microscopy and image analysis facilitate the detection and quantification of CA in cancer cells.

Purpose of the Study:

  • To review the prevalence and significance of CA in various solid tumors.
  • To evaluate the utility of quantifying CA as an independent prognostic marker.
  • To explore the clinical feasibility of a CA-based risk score for predicting cancer progression.

Main Methods:

  • Development of a semi-automated pipeline integrating immunofluorescence confocal microscopy and digital image analysis.
  • Quantification of centrosome aberrations using a novel Centrosome Amplification Score (CAS).
  • Analysis of CA levels across different stages of breast cancer progression.

Main Results:

  • CA increases with disease progression in breast cancer, from normal tissue to invasive tumors.
  • The developed CAS quantifies both numerical and structural centrosome aberrations.
  • CA is correlated with indicators of poor prognosis, including tumor grade, recurrence, and metastasis.

Conclusions:

  • CA is a significant factor in tumor initiation, progression, and metastasis.
  • Quantifying CA holds promise as an independent prognostic biomarker for solid cancers.
  • A CA-based risk score could aid in predicting patient prognosis and guiding clinical decisions.