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A novel role of KIF3b in the seminoma cell cycle

Hao-Qing Shen1, Yu-Xi Xiao1, Zhen-Yu She1

  • 1The Sperm Laboratory, College of Life Sciences, Zhejiang University, 866 Yu Hang Tang Road, Hangzhou 310058, China.

Experimental Cell Research
|February 6, 2017
PubMed

Insights

Kinesin family protein KIF3b is highly abundant in seminoma testis cancer. Knocking down KIF3b impairs cell division, migration, and viability, suggesting its crucial role in cancer progression and normal cell division.

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Oncology

Background:

  • Testis cancer, particularly seminoma, is increasing in young men.
  • The underlying molecular mechanisms and gene expression in seminoma remain largely unknown.
  • KIF3b, a kinesin-2 family protein, is vital for intraflagellar transport.

Purpose of the Study:

  • To investigate the role of KIF3b in seminoma.
  • To explore KIF3b's function in cell division and migration.

Main Methods:

  • Western-blotting and semi-quantitative PCR to analyze KIF3b levels.
  • Cell-based assays (wound-healing, cell counting kit) to assess migration and viability.
  • Immunofluorescence microscopy to observe KIF3b localization during mitosis.

Main Results:

  • Elevated KIF3b protein levels were found in seminoma tissue, contrasting with normal testicular tissue.
  • KIF3b knockdown significantly reduced HeLa cell migration, viability, and proliferation.
  • KIF3b accumulates at the central spindle, and its depletion increases multipolar division and multinucleation rates.

Conclusions:

  • KIF3b plays a significant role in mitosis, including spindle formation and cytokinesis.
  • KIF3b is potentially essential for seminoma cell division and proliferation.
  • KIF3b is necessary for normal cell division processes.
Keywords:
CytokinesisKIF3bKinesin-2Seminoma

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