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Cell lineage-specific expression of the MIPP gene
D E Mold1, A Chang-Yeh, R C Huang
1Department of Biology, Johns Hopkins University, Baltimore, MD 21218.
Biochemical and Biophysical Research Communications
|June 28, 1991
Summary
The mouse IAP promoted placental (MIPP) gene is specifically expressed in placental tissues, including the yolk sac, but not the embryo. This suggests MIPP
Area of Science:
- Developmental Biology
- Gene Expression Analysis
- Mammalian Reproduction
Background:
- The mouse IAP promoted placental (MIPP) gene's role in early development is not fully understood.
- Investigating MIPP gene expression provides insights into placental and extraembryonic tissue development.
Purpose of the Study:
- To determine the expression pattern of the MIPP gene in the developing mouse conceptus.
- To identify specific tissues and cell layers where MIPP is expressed during embryogenesis.
Main Methods:
- Northern hybridization analysis was employed to detect MIPP transcripts.
- Total cellular RNA was isolated from various tissues of the 13.5-day mouse conceptus.
Main Results:
- MIPP transcripts were detected in the placenta, parietal yolk sac, and visceral yolk sac.
- MIPP expression was notably absent in the embryo and amnion.
- Within the visceral yolk sac, MIPP expression was localized to the visceral endoderm cell layer.
Conclusions:
- The MIPP gene is specifically expressed in tissues derived from trophectoderm and primitive endoderm lineages.
- MIPP expression patterns suggest a role in placental and extraembryonic development.
- Comparison with IAP gene expression highlights unique aspects of MIPP localization, except in the amnion.