STEM CELL INDEX IN THE PROGRESSION OF CERVICAL INTRAEPITHELIAL NEOPLASIA.

Area of Science:

• Oncology
• Cell Biology
• Gynecologic Pathology

Background:

• Stem cells possess unique self-renewal and proliferation capabilities, crucial in both normal tissues and cancer.
• Cervical intraepithelial neoplasia (CIN) represents a spectrum of cervical changes with varying malignant potential.
• Identifying reliable markers for CIN progression is essential for accurate prognosis and treatment.

Purpose of the Study:

• To investigate the role of the stem cell index, specifically CD44 expression, in the progression of CIN.
• To analyze the correlation of CD44 with epithelial-mesenchymal transition (EMT), proliferation, apoptosis, and hormonal markers.
• To determine if CD44 expression can differentiate between CIN grades and cervical carcinoma.

Main Methods:

• Immunohistochemical analysis of CD44 expression in 140 cervical tissue samples.
• Correlation analysis of CD44 with EMT markers, proliferation markers (Ki67), apoptosis markers (Cas3), and estrogen receptor (ER) status.
• Assessment of both protein and mRNA levels for comprehensive analysis.

Main Results:

• Stem cell index, indicated by CD44 expression, significantly increases with CIN progression.
• CD44 expression shows significant correlations with EMT, proliferation-apoptotic features, and ER status at both protein and mRNA levels.
• Two distinct groups within CIN and cervical carcinoma can be identified based on CD44, Ki67, Cas3, and ER expression.

Conclusions:

• CD44 serves as a valuable marker for assessing stem cell index in CIN progression.
• The identified correlations highlight CD44's role in the pathobiology of cervical lesions.
• Expression patterns of CD44, Ki67, Cas3, and ER can aid in early CIN prognosis and clinical management.