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Updated: Jun 27, 2025

Studying Triple Negative Breast Cancer Using Orthotopic Breast Cancer Model
Published on: March 20, 2020
The functional role of Nudt2 in human triple negative breast cancer
Rasha Abu-Rahmah1,2, Hovav Nechushtan1, Sanaa Hidmi2
1Department of Oncology, Hadassah Hebrew University Medical Center, Jerusalem, Israel.
Abstract:
The main known function of Nudix hydrolase 2 (Nudt2) is to hydrolyze the secondary messenger diadenosine 5', 5'''-p1, p4-tetraphosphate (Ap4A). In this study we examined the role of Nudt2 in breast carcinoma through its expression in human invasive ductal carcinoma tissues, and its functions in human triple negative breast cancer (TNBC) cell lines. A significantly higher expression of Nudt2 was observed in human invasive ductal carcinoma tissues compared to that in normal breast tissue. Knockdown of Nudt2 in TNBC cell lines resulted in a significant reduction in cellular proliferation via the Ki67 marker, accompanied by G0/G1 phase cell cycle arrest, in the migration and invasion of these cells and in tumorigenicity and anchorage-independent growth. It can therefore be concluded that Nudt2 plays a significant role in promoting TNBC growth.
Insights
Nudix hydrolase 2 (Nudt2) promotes triple-negative breast cancer (TNBC) growth. Higher Nudt2 expression in tumors correlates with reduced proliferation, migration, invasion, and tumorigenicity in TNBC cell lines, indicating its oncogenic role.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Nudix hydrolase 2 (Nudt2) primarily hydrolyzes the secondary messenger diadenosine 5', 5'''-p1, p4-tetraphosphate (Ap4A).
- The specific role of Nudt2 in breast cancer, particularly triple-negative breast cancer (TNBC), remains largely unexplored.
Purpose of the Study:
- To investigate the expression levels of Nudt2 in human invasive ductal carcinoma tissues.
- To elucidate the functional role of Nudt2 in the progression of human triple-negative breast cancer (TNBC) cell lines.
Main Methods:
- Quantitative analysis of Nudt2 expression in invasive ductal carcinoma and normal breast tissues.
- Functional assays in TNBC cell lines, including Nudt2 knockdown, proliferation assays (Ki67), cell cycle analysis, migration and invasion assays, and anchorage-independent growth assessments.
Main Results:
- Significantly elevated Nudt2 expression was detected in invasive ductal carcinoma tissues compared to normal breast tissues.
- Nudt2 knockdown in TNBC cell lines led to reduced cellular proliferation (Ki67 marker), G0/G1 phase cell cycle arrest, decreased migration and invasion, and impaired tumorigenicity and anchorage-independent growth.
Conclusions:
- Nudt2 is significantly upregulated in human invasive ductal carcinoma.
- Nudt2 plays a crucial role in promoting TNBC cell proliferation, migration, invasion, and tumorigenicity, highlighting its potential as a therapeutic target.
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