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Published on: January 12, 2020
[The Relationship between TSG101 Protein and Notch3 Receptor in Lung Cancer.]
Jiahui Chang1, Ping Lu, Cunwei Cai
1Department of Pathology, College of Basic Medical Sciences, China Medical University, Shenyang 110001, China.
Background:
TSG101 protein is one of the key factors in Endosomal sorting pathway. The abnormality of this pathway could decrease degradation of Notch receptor which leads to disorder of cell differentiation and development in drosophila. In mammal, the Notch3 receptors correlate with lung tissue development and lung carcinogenesis. The purpose of this study is to explore the relationship between TSG101 protein and Notch3 receptor in human lung cancer.
Methods:
Immunohistochemical method (S-P method) and Western blot were applied to detect the expressions of TSG101 protein and Notch3 receptor in lung cancer tissues and cell lines, in comparison with the corresponding normal tissues and cell lines. Besides, the expression of Notch3 receptor was observed when TSG101 protein was blocked by its specific antibody.
Results:
The TSG101 protein expressions in tumor tissues were significantly lower than those in the neighboring noncancerous tissue, with higher expressions of Notch3 receptor in tumor tissues, which were correlated with the cellular differentiation and lymph node metastases. The expression of Notch3 receptor increased after blockage of TSG101 protein by its specific antibody.
Conclusions:
Down-regulation of TSG101 protein was correlated with the up- regulation of Notch 3 receptor in lung cancer.
Insights
TSG101 protein down-regulation is linked to increased Notch3 receptor levels in lung cancer, potentially impacting cell differentiation and metastasis. This suggests TSG101 may play a role in lung carcinogenesis.
Area of Science:
- Molecular Biology
- Cell Biology
- Oncology
Context:
- The endosomal sorting pathway, regulated by TSG101 protein, is crucial for cellular processes.
- Aberrant endosomal sorting can impair Notch receptor degradation, affecting cell differentiation.
- Notch3 receptor signaling is implicated in lung tissue development and lung cancer progression.
Purpose:
- To investigate the relationship between TSG101 protein expression and Notch3 receptor levels in human lung cancer.
- To determine if TSG101 protein alterations correlate with lung cancer characteristics.
Summary:
- TSG101 protein expression was significantly lower in lung tumor tissues compared to normal tissues.
- Notch3 receptor expression was elevated in lung tumors and correlated with differentiation and metastasis.
- Blocking TSG101 protein function led to increased Notch3 receptor expression.
Impact:
- Findings suggest a negative correlation between TSG101 protein and Notch3 receptor in lung cancer.
- TSG101 down-regulation may contribute to lung carcinogenesis via Notch3 pathway.
- This research highlights potential therapeutic targets in lung cancer treatment.
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