Expression and clinical significance of SYNE3 in non-small cell lung cancer

To detect the expression of Spectrin Repeat Containing Nuclear Envelope Family Member 3 (SYNE3) and Cluster of Differentiation 34 (CD34) in non-small cell lung cancer (NSCLC). It also aimed to explore the relationship between SYNE3 and NSCLC angiogenesis and clinicopathologic features to identify new biomarkers for NSCLC.

Forty-five NSCLC stage IA-IVB tissue specimens from patients diagnosed at Bazhong Central Hospital were collected from January to September 2022, along with 45 para-cancerous normal lung tissues as controls. None of the NSCLC patients had received anti-tumor therapies, including radiotherapy, chemotherapy, targeted therapy, immunotherapy, or traditional Chinese medicine. All specimens were stained for SYNE3 and CD34 using the Streptavidin-Peroxidase (SP) method. The expression levels of SYNE3 and CD34 in NSCLC tissues and para-cancerous tissues were detected, and a correlation analysis between SYNE3 and clinicopathological features was performed. The number of CD34-labeled microvessels was counted using the Microvessel density (MVD) method. The relationship between SYNE3 and NSCLC angiogenesis was examined through the correlation between CD34-MVD and NSCLC clinicopathologic features.

The expression of SYNE3 in NSCLC was significantly lower than that in para-cancerous normal lung tissues, while the expression of CD34 in NSCLC was significantly higher than in para-cancerous normal lung tissues (P=0.037). SYNE3 expression in NSCLC was negatively correlated with tumor diameter and was lower in male patients with a smoking history compared to female patients without a smoking history. CD34 expression was positively correlated with Tumor, Node, Metastasis staging and lymph node metastasis. There was a significant correlation between the expression of SYNE3 and CD34 in NSCLC (r=0.450, P=0.000).

SYNE3 was lowly expressed and negatively correlated with tumor size in NSCLC, whereas CD34 was highly expressed and positively correlated with TNM stage and lymph node metastasis. The significant correlation between the expressions of SYNE3 and CD34 suggests that SYNE3 may play a key role in NSCLC angiogenesis and progression.