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Related Experiment Videos

Cyclin D3 expression in normal, reactive and neoplastic tissues

C Doglioni1, C Chiarelli, E Macrí

  • 1Department of Pathology, City Hospital of Belluno, Italy. anpatbl@sunrise.it

The Journal of Pathology
|August 26, 1998
PubMed
Summary
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Cyclin D3 protein plays a dual role in cell proliferation and differentiation across normal and cancerous human tissues. Its distinct expression patterns, differing from Cyclin D1, suggest unique functions and potential diagnostic utility in various neoplasms.

Area of Science:

  • Cell biology
  • Oncology
  • Immunohistochemistry

Background:

  • Cyclin D3 is a protein involved in cell cycle regulation.
  • Its expression patterns and functions in human tissues, particularly in relation to proliferation and differentiation, require further elucidation.
  • Understanding Cyclin D3's role is crucial for comprehending normal tissue development and neoplastic processes.

Purpose of the Study:

  • To investigate the immunohistochemical expression of Cyclin D3 in normal, reactive, and neoplastic human tissues.
  • To explore the dual role of Cyclin D3 in proliferation and differentiation.
  • To compare Cyclin D3 expression with Cyclin D1 and assess its diagnostic utility in various cancers.

Main Methods:

  • Immunohistochemical analysis of Cyclin D3 expression.

Related Experiment Videos

  • Examination of normal, reactive, and neoplastic human embryonal and adult tissues.
  • Correlation of Cyclin D3 expression with proliferative activity and clinicopathological features.

    • Main Results:

    • Cyclin D3 exhibits distinct expression patterns in fetal development, normal adult tissues (lymphoid vs. other tissues), and various neoplasms.
    • In lymphomas, Cyclin D3 expression correlates with proliferation, with exceptions in Cyclin D1-positive mantle cell lymphomas.
    • Strong Cyclin D3 positivity is observed in benign endocrine tumors and steroid hormone-secreting cells, while high-grade neuroendocrine carcinomas are negative.

    Conclusions:

    • Cyclin D3 demonstrates a dual role in proliferation and differentiation, conserved in some neoplastic conditions.
    • Distinct expression patterns from Cyclin D1 suggest non-redundant functions.
    • Cyclin D3 deregulation may be pathogenetic in lymphomagenesis and holds diagnostic potential.