Bone Morphogenic Protein 4
Bone Morphogenic Protein 4 - Related Videos
08:10
Using Confocal Analysis of Xenopus laevis to Investigate Modulators of Wnt and Shh Morphogen Gradients
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Cited by 2 •
2015
The manuscript here provides a simple set of methods for analysing the secretion and diffusion of fluorescently tagged ligands in Xenopus. This provides a context for testing the ability of other proteins to modify ligand distribution and allowing experiments that may give insight into mechanisms regulating morphogen gradients.
08:49
Models of Bone Metastasis
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Cited by 115 •
2012
Animal models are frequently utilized to study cancer metastasis to bone. In this protocol we will describe two common methods of tumor inoculation for bone metastasis studies and briefly describe some of the analyses utilized to monitor and quantify these models.
12:54
In Vivo 4-Dimensional Tracking of Hematopoietic Stem and Progenitor Cells in Adult Mouse Calvarial Bone Marrow
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Cited by 19 •
2014
The nature of the interactions between hematopoietic stem and progenitor cells (HSPCs) and bone marrow niches is poorly understood. Custom hardware modifications and a multi-step acquisition protocol allow the use of two-photon and confocal microscopy to image ex vivo labeled HSPCs homed within bone marrow areas, tracking interactions and movement.
09:36
Safety Precautions and Operating Procedures in an (A)BSL-4 Laboratory: 4. Medical Imaging Procedures
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Cited by 8 •
2016
Here, we present an overview of the preparation and animal handling procedures required to safely perform medical imaging in an animal biosafety level 4 laboratory. Computed tomography of a mock-infected guinea pig illustrates these procedures that may be used to evaluate the disease caused by a high consequence pathogen.
07:17
Murine Hind Limb Long Bone Dissection and Bone Marrow Isolation
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Cited by 293 •
2016
Here we present a protocol for the dissection of hind limb long bones (femurs and tibiae) from the laboratory mouse. We further describe a rapid technique for bone marrow isolation from these bones that utilizes centrifugation for removal of bone marrow from the bone marrow space.
FAQs
Signal transmission begins when BMP4 engages both receptor classes at the cell surface. The type II and type I serine/threonine kinase receptors then initiate phosphorylation of SMAD1, SMAD5, and SMAD8. These activated SMAD proteins partner with SMAD4, forming a signaling route that changes gene expression and connects extracellular BMP4 availability with cell-fate decisions.
Extracellular antagonists provide a regulatory layer before BMP4 signaling reaches its receptors. By limiting the signal outside the cell, they can constrain receptor engagement and reduce downstream SMAD1/5/8 phosphorylation. This control matters during embryonic development because the strength or distribution of signaling contributes to tissue patterning, body-axis establishment, and orderly organ formation.
The SMAD partnership links receptor activity to changes in gene expression. Phosphorylated SMAD1, SMAD5, and SMAD8 do not represent the endpoint of signaling; their association with SMAD4 creates the transcriptional signaling complex described for BMP4. Consequently, receptor stimulation can influence developmental programs rather than producing only a short-lived extracellular response.
BMP4 signaling helps establish body axes by providing developmental information that influences how embryonic tissues become patterned. Its effects are not limited to one mature tissue, because the same signaling system also participates in organ formation and cell-fate regulation. Studying this role helps developmental biologists connect molecular signaling with the spatial organization of the embryo.
BMP4 serves as a signaling factor in studies of stem-cell differentiation, where researchers examine how developmental cues influence the identities adopted by cells. The pathway is especially informative because receptor-driven SMAD signaling changes gene expression. Such work can clarify how extracellular signals regulate cell fate and can support efforts to guide cells toward desired developmental states.
BMP4 research is relevant to congenital abnormalities because disrupted developmental signaling could affect body-axis patterning, organ formation, or tissue differentiation. The same pathway also informs tissue-engineering research, particularly where investigators seek to understand or direct formation of bone, heart, or nervous-system tissues. These applications connect embryonic mechanisms with strategies for studying developmental defects and engineered tissues.