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Developmental control of IFN-alpha expression in murine embryos
P Duc-Goiran1, B Robert, S Navarro
1INSERM U361, Paris, France.
Experimental Cell Research
|October 1, 1994
Summary
Interferon-alpha (IFN-alpha) transcripts are present in developing mice, with distinct transcript sizes found in fetuses and fetal annexes during gestation. These findings suggest a role for IFN-alpha in embryonic and fetal development.
Area of Science:
- Immunology
- Developmental Biology
- Molecular Biology
Background:
- Interferon-alpha (IFN-alpha) is a key cytokine involved in immune responses.
- Its role during embryonic and fetal development is not fully understood.
Purpose of the Study:
- To investigate the expression and localization of IFN-alpha transcripts in murine embryos, fetuses, and fetal annexes during gestation.
Main Methods:
- Northern blot analysis
- Reverse transcription-polymerase chain reaction (RT-PCR)
- In situ hybridization using 35S-IFN-alpha antisense RNA probes
Main Results:
- IFN-alpha transcripts (1.2 kb) were detected in fetuses from day 14 of gestation until birth.
- Larger transcripts (2.2 kb, 4 kb, 7 kb) were observed in fetal annexes and near birth.
- In situ hybridization revealed IFN-alpha transcription in fetal epithelia, including skin, ependyme, and intestinal glandular epithelium.
Conclusions:
- IFN-alpha is expressed during murine fetal development, with distinct transcript variants.
- The localization suggests a potential role in cellular differentiation and epithelial development.