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Newly developed TGF-β2 knock down transgenic mouse lines express TGF-β2 differently and its distribution in multiple
Yan-Bin Xiyang1, Fang Wang, Bao-Jiang Qian
1Institute of Neuroscience, Kunming Medical University, 1168 West Chunrong Road, Yuhua Avenue, Chenggong District, Kunming 650500, Yunnan, China.
Background:
Transforming growth factor-betas (TGF-βs), including beta2 (TGF-β2), constitute a superfamily of multifunctional cytokines with important implications in morphogenesis, cell differentiation and tissue remodeling. TGF-β2 is thought to play important roles in multiple developmental processes and neuron survival. However, before we carried out these investigations, a TGF-β2 gene down-regulated transgenic animal model was needed. In the present study, expressional silencing TGF-β2 was achieved by select predesigning interference short hairpin RNAs (shRNAs) targeting mouse TGF-β2 genes.
Results:
Four homozygous transgenic offspring were generated by genetic manipulation and the protein expressions of TGF-β2 were detected in different tissues of these mice. The transgenic mice were designated as Founder 66, Founder 16, Founder 53 and Founder 41. The rates of TGF-β2 down-expression in different transgenic mice were evaluated. The present study showed that different TGF-β2 expressions were detected in multiple tissues and protein levels of TGF-β2 decreased at different rates relative to that of wild type mice. The expressions of TGF-β2 proteins in transgenic mice (Founder 66) reduced most by 52%.
Conclusions:
The present study generated transgenic mice with TGF-β2 down-regulated, which established mice model for systemic exploring the possible roles of TGF-β2 in vivo in different pathology conditions.
Insights
Researchers developed a new transgenic mouse model with down-regulated transforming growth factor-beta 2 (TGF-β2) expression. This model allows for in vivo studies of TGF-β2
Area of Science:
- Molecular Biology
- Genetics
- Developmental Biology
Background:
- Transforming growth factor-betas (TGF-βs) are multifunctional cytokines crucial for development and tissue remodeling.
- TGF-β2 plays significant roles in developmental processes and neuron survival.
- A need existed for a TGF-β2 gene down-regulated transgenic animal model.
Purpose of the Study:
- To create a transgenic mouse model with reduced TGF-β2 gene expression.
- To establish a tool for investigating the in vivo functions of TGF-β2 in various pathological conditions.
Main Methods:
- Utilized predesigned short hairpin RNAs (shRNAs) for targeted gene silencing of mouse TGF-β2.
- Generated homozygous transgenic offspring through genetic manipulation.
- Detected and evaluated TGF-β2 protein expression in different tissues of the transgenic mice.
Main Results:
- Successfully generated four homozygous transgenic mice (Founder 66, 16, 53, 41).
- Confirmed down-regulation of TGF-β2 protein levels in multiple tissues compared to wild-type mice.
- Observed the most significant reduction in TGF-β2 expression (52%) in Founder 66 mice.
Conclusions:
- Successfully established a transgenic mouse model with down-regulated TGF-β2.
- This model provides a platform for systemic in vivo exploration of TGF-β2 roles in different pathologies.
