A Tlx2-Cre mouse line uncovers essential roles for hand1 in extraembryonic and lateral mesoderm
Open accessAbstract
Hand1 regulates development of numerous tissues within the embryo, extraembryonic mesoderm, and trophectoderm. Systemic loss of Hand1 results in early embryonic lethality but the cause has remained unknown. To determine if Hand1 expression in extraembryonic mesoderm is essential for embryonic survival, Hand1 was conditionally deleted using the HoxB6-Cre mouse line that expresses Cre in extraembryonic and lateral mesoderm. Deletion of Hand1 using HoxB6-Cre resulted in embryonic lethality identical to systemic knockout. To determine if lethality is due to Hand1 function in extraembryonic mesoderm or lateral mesoderm, we generated a Tlx2-Cre mouse line expressing Cre in lateral mesoderm but not extraembryonic tissues. Deletion of Hand1 using the Tlx2-Cre line results in embryonic survival with embryos exhibiting herniated gut and thin enteric smooth muscle. Our results show that Hand1 regulates development of lateral mesoderm derivatives and its loss in extraembryonic mesoderm is the primary cause of lethality in Hand1-null embryos.
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Hand1 and Foxf1 are required for mesoderm development.
“both of which are required for mesoderm development”
From Single-Cell Transcriptomics Reveals Early Emergence of Liver Parenchymal and Non-parenchymal Cell Lineages (2020) · cites this paper as Maska et al., 2010
The paper’s main text (indexed under Abstract; page unavailable) reports essential roles for Hand1 in extraembryonic and lateral mesoderm, including enteric smooth muscle organization. It does not address Foxf1, and its Hand1 findings concern specific mesodermal tissues rather than mesoderm development generally (searched: Foxf1 and Foxf1 required for mesoderm development). (LLM, conf=0.88)
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- Authors
- Maska, E. L., Cserjesi, P., Hua, L. L., Garstka, M. E., Brody, H. M., & Morikawa, Y.
- Affiliations
- Tulane University (US)
- Corresponding author
- Morikawa, Yuka
- Venue
- genesis
- Publisher
- Wiley
- Published
- 2010-08
- Volume
- 48
- Issue
- 8
- Pages
- 479-484
- ISSN
- 1526-954X (ISSN-L)
- 1526-968X
- PMC
- PMC2955361
- OpenAlex
- W2150720049
- Cited by
- 17
- References
- 23
- Citations by year
- 2025: 4 · 2024: 2 · 2022: 2 · 2021: 1 · 2020: 1 · 2019: 1 · 2017: 1 · 2016: 1 · 2015: 1 · 2013: 1
- FWCI
- 0.39
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- genesis (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Science Foundation (0529746)
- American Heart Association
- National Institutes of Health (5r01ns015547-39, NS15547)
- National Institute of Neurological Disorders and Stroke (R01-NS015547, NS 15547)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Congenital heart defects research
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Pluripotent Stem Cells Research
- Keywords
- HAND1, conditional gene deletion, extraembryonic mesoderm, lateral mesoderm, trophectoderm, embryonic lethality
- MeSH terms
- Animals, beta-Galactosidase, Embryo, Mammalian, Female, Immunohistochemistry, Lac Operon, Male, Mesoderm, Mice, Inbred C57BL, Mice, Transgenic, Mice, Knockout, Homeodomain Proteins, Gene Expression Regulation, Developmental, Integrases, Gastrointestinal Tract, Mice, Basic Helix-Loop-Helix Transcription Factors, Basic Helix-Loop-Helix Proteins
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