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Related Experiment Video

Updated: Jun 12, 2026

In Vitro Differentiation of Human Pluripotent Stem Cells into Trophoblastic Cells

In Vitro Differentiation of Human Pluripotent Stem Cells into Trophoblastic Cells

Published on: March 16, 2017

Bone morphogenetic protein 4 mediates human embryonic germ cell derivation.

Marc Hiller¹, Cyndi Liu, Paul D Blumenthal

¹Department of Gynecology and Obstetrics, Institute for Cellular Engineering, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA.

Stem Cells and Development

|May 22, 2010

Summary

Bone morphogenetic protein 4 (BMP4) significantly enhances human embryonic germ cell (EGC) derivation and survival. This growth factor plays a crucial role in maintaining pluripotency and proliferation of these vital stem cells.

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Area of Science:

Stem Cell Biology
Developmental Biology
Reproductive Biology

Background:

Human primordial germ cells (PGCs) are a source of embryonic germ cells (EGCs).
Factors regulating human EGC survival and maintenance are largely unknown.
Bone morphogenetic protein 4 (BMP4) is crucial for mouse embryonic stem cells and PGC specification.

Purpose of the Study:

To investigate the effect of recombinant human BMP4 on human EGC derivation and PGC survival.
To elucidate the role of the BMP4 pathway in human EGC pluripotency and maintenance.

Main Methods:

Culture of human PGCs and EGCs with varying concentrations of recombinant BMP4.
Assessment of PGC number and EGC derivation/maintenance using alkaline phosphatase and OCT4 staining.
Inhibition of BMP4 pathway using Noggin.
Quantitative real-time PCR and immunostaining to analyze BMP4 pathway components and downstream activators (ID1, pSMADs 1/5).

Main Results:

Recombinant BMP4 increased human PGC number in a dose-dependent manner.
BMP4 enhanced EGC derivation and maintenance efficiency.
Noggin treatment reduced PGC proliferation and increased cystic embryoid body formation.
BMP4 pathway constituents and downstream activators (ID1, pSMADs 1/5) were upregulated in EGCs compared to PGCs.

Conclusions:

BMP4 is a key factor in promoting human EGC derivation and survival.
The BMP4 pathway is active and likely contributes to the pluripotency of human EGCs.
BMP4 signaling is essential for maintaining human PGCs and their derivation into EGCs.