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Published on: October 27, 2020
TGF-β superfamily co-receptors in cancer
John B Pawlak1, Gerard C Blobe1,2
1Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA.
Abstract:
Transforming growth factor-β (TGF-β) superfamily signaling via their cognate receptors is frequently modified by TGF-β superfamily co-receptors. Signaling through SMAD-mediated pathways may be enhanced or depressed depending on the specific co-receptor and cell context. This dynamic effect on signaling is further modified by the release of many of the co-receptors from the membrane to generate soluble forms that are often antagonistic to the membrane-bound receptors. The co-receptors discussed here include TβRIII (betaglycan), endoglin, BAMBI, CD109, SCUBE proteins, neuropilins, Cripto-1, MuSK, and RGMs. Dysregulation of these co-receptors can lead to altered TGF-β superfamily signaling that contributes to the pathophysiology of many cancers through regulation of growth, metastatic potential, and the tumor microenvironment. Here we describe the role of several TGF-β superfamily co-receptors on TGF-β superfamily signaling and the impact on cellular and physiological functions with a particular focus on cancer, including a discussion on recent pharmacological advances and potential clinical applications targeting these co-receptors.
Insights
Transforming growth factor-β (TGF-β) superfamily co-receptors modulate SMAD signaling, impacting cancer growth and metastasis. Soluble co-receptors can antagonize membrane-bound forms, influencing TGF-β signaling pathways in disease.
Area of Science:
- Molecular Biology
- Cell Biology
- Cancer Biology
Background:
- Transforming growth factor-β (TGF-β) superfamily signaling is crucial for cellular functions.
- TGF-β signaling is modulated by co-receptors, influencing SMAD-mediated pathways.
- Soluble forms of co-receptors can act antagonistically to membrane-bound receptors.
Purpose of the Study:
- To review the roles of various TGF-β superfamily co-receptors.
- To elucidate the impact of co-receptors on TGF-β signaling and cellular functions.
- To focus on the implications of co-receptor dysregulation in cancer pathophysiology.
Main Methods:
- Literature review of TGF-β superfamily co-receptors.
- Analysis of co-receptor function in SMAD-mediated signaling.
- Discussion of co-receptors in cancer growth, metastasis, and tumor microenvironment.
Main Results:
- Co-receptors dynamically enhance or depress TGF-β superfamily signaling.
- Soluble co-receptors can antagonize membrane-bound receptor activity.
- Dysregulation of co-receptors contributes to cancer development and progression.
Conclusions:
- TGF-β superfamily co-receptors are critical regulators of TGF-β signaling.
- Altered co-receptor function significantly impacts cancer biology.
- Targeting co-receptors presents potential therapeutic strategies for cancer treatment.
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