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Updated: May 21, 2026
11:02
Methods to Discover Alternative Promoter Usage and Transcriptional Regulation of Murine Bcrp1
Published on: May 27, 2016
[TEC promoter mediates P210(bcr/abl) gene expression in BaF3 cells]
Yu-Feng Zhu1, Yuan-Zhan Wang, Fan-Yi Meng
1Department of Hematology, the Southern Medical University, Guangdong Province, China.
Zhongguo Shi Yan Xue Ye Xue Za Zhi
|June 29, 2012
Summary
The TEC promoter enables specific P210(bcr/abl) gene expression in hematopoietic cells, crucial for developing chronic myelogenous leukemia (CML) mouse models. This targeted approach avoids embryonic lethality associated with constitutive promoters.
Area of Science:
- Molecular Biology
- Genetics
- Hematology
Context:
- Developing transgenic mouse models for chronic myelogenous leukemia (CML) is challenging due to the embryonic lethality of the P210(bcr/abl) gene when driven by constitutive promoters.
- Hematopoietic-specific promoters are essential for constructing viable CML mouse models.
Purpose:
- To investigate the efficacy of the TEC promoter in mediating P210(bcr/abl) gene expression specifically within hematopoietic tissues.
- To construct and validate a novel CML transgenic mouse model using TEC promoter-driven gene expression.
Summary:
- The study replaced the constitutive promoter in an IRES2-eGFP vector with the -364-+22 domain of the mouse TEC promoter.
- The P210(bcr/abl) gene was inserted into the modified vector and transfected into BaF3 (hematopoietic) and 293 (non-hematopoietic) cells.
- Expression of eGFP and P210(bcr/abl) was detected in BaF3 cells but not in 293 cells, confirming TEC promoter's hematopoietic specificity and effectiveness.
Impact:
- The -364-+22 domain of the TEC promoter facilitates high-effective and specific gene expression in hematopoietic tissues.
- This finding provides a viable strategy for constructing P210(bcr/abl) transgenic mouse models for CML research, overcoming previous limitations.
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