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Transforming Growth Factor-beta superfamily: evaluation as breast cancer biomarkers and preventive agents
V Gupta1, D P Harkin, H Kawakubo
1Pediatric Surgical Research Laboratories, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA. maheswaran@helix.mgh.harvard.edu
Abstract:
The Transforming Growth Factor-beta (TGFbeta) superfamily of cytokines is comprised of a number of structurally-related, secreted polypeptides that regulate a multitude of cellular processes including proliferation, differentiation and neoplastic transformation. These growth regulatory molecules induce ligand-mediated hetero-oligomerization of distinct type II and type I serine/threonine kinase receptors that transmit signals predominantly through receptor-activated Smad proteins but also induce Smad-independent pathways. Ligands, receptors and intracellular mediators of signaling initiated by members of the TGFbeta family are expressed in the mammary gland and disruption of these pathways may contribute to the development and progression of human breast cancer. Since many facets of TGFbeta and breast cancer have been recently reviewed in several articles, except for discussion of recent developments on some aspects of TGFbeta, the major focus of this review will be on the role of activins, inhibins, BMPs, nodal and MIS-signaling in breast cancer with emphasis on their utility as potential diagnostic, prognostic and therapeutic targets.
Insights
Transforming Growth Factor-beta (TGFbeta) signaling is crucial in breast cancer development. This review focuses on activins, BMPs, and other TGFbeta superfamily members as potential diagnostic and therapeutic targets for breast cancer.
Area of Science:
- Cell Biology
- Molecular Biology
- Oncology
Background:
- The Transforming Growth Factor-beta (TGFbeta) superfamily regulates critical cellular processes like proliferation and differentiation.
- These signaling pathways are implicated in the development and progression of human breast cancer.
- While TGFbeta signaling is well-studied, other members of the superfamily warrant focused investigation in breast cancer.
Purpose of the Study:
- To review the role of activins, inhibins, Bone Morphogenetic Proteins (BMPs), nodal, and MIS signaling in breast cancer.
- To highlight the potential of these pathways as diagnostic, prognostic, and therapeutic targets.
- To discuss recent developments in TGFbeta signaling relevant to breast cancer.
Main Methods:
- Literature review focusing on TGFbeta superfamily members beyond TGFbeta itself.
- Analysis of signaling mechanisms including ligand-receptor interactions and intracellular mediators.
- Examination of the expression and function of these pathways in the mammary gland.
Main Results:
- Members of the TGFbeta superfamily, including activins, inhibins, BMPs, nodal, and MIS, are expressed in the mammary gland.
- Disruption of these signaling pathways can contribute to breast cancer initiation and progression.
- These pathways offer promising avenues for novel diagnostic, prognostic, and therapeutic strategies.
Conclusions:
- Activins, inhibins, BMPs, nodal, and MIS signaling represent critical, yet under-explored, components of breast cancer pathogenesis.
- Targeting these specific TGFbeta superfamily members holds significant potential for advancing breast cancer diagnostics and therapeutics.
- Further research into these pathways is essential for developing effective clinical applications.
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