During development, stem and progenitor cells gradually commit to differentiation pathways. Cell fate decisions are regulated by differentiation factors, which activate transcription programmes that specify lineage and differentiation status. Among these factors, the transforming growth factor (TGF)-β family is important in both lineage selection and progression of differentiation of most, if not all, cell and tissue types. There is now increasing evidence that TGF-β family proteins have the ability to redirect the differentiation of cells that either have fully differentiated or have engaged in differentiation along a particular lineage, and can thereby elicit 'transdifferentiation'. This capacity for cellular plasticity is critical for normal embryonic development, but when recapitulated in the adult it can give rise to, or contribute to, a variety of diseases. This is illustrated by the ability of TGF-β family members to redirect epithelial cells into mesenchymal differentiation and to cause switching of mesenchymal cells from one lineage to another. Hence, various pathologies in adults may be considered diseases of abnormal development and differentiation.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 12 print issues and online access
206,07 € per year
only 17,17 € per issue
Buy this article
- Purchase on SpringerLink
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout


References
Moustakas, A. & Heldin, C.-H. Non-Smad TGF-β signals. J. Cell Sci. 118, 3573–3584 (2005).
Feng, X.-H. & Derynck, R. Specificity and versatility in TGF-β signaling through Smads. Annu. Rev. Cell Dev. Biol. 21, 659–693 (2005).
Massagué, J., Seoane, J. & Wotton, D. Smad transcription factors. Genes Dev. 19, 2783–2810 (2005).
Larsson, J. & Karlsson, S. The role of Smad signaling in hematopoiesis. Oncogene 24, 5676–5692 (2005).
Li, M. O., Wan, Y. Y., Sanjabi, S., Robertson, A. K. & Flavell, R. A. Transforming growth factor-β regulation of immune responses. Annu. Rev. Immunol. 24, 99–146 (2006).
Chen, H. L. & Panchision, D. M. Bone morphogenetic protein pleiotropism in neural stem cells and their derivatives — alternative pathways, convergent signals. Stem Cells 25, 63–68 (2007).
Zavadil, J. et al. Genetic programs of epithelial cell plasticity directed by transforming growth factor-β. Proc. Natl Acad. Sci. USA 98, 6686–6691 (2001).
Valcourt, U., Kowanetz, M., Niimi, H., Heldin, C.-H. & Moustakas, A. TGF-β and the Smad signaling pathway support transcriptomic reprogramming during epithelial–mesenchymal cell transition. Mol. Biol. Cell 16, 1987–2002 (2005).
Akhurst, R. J. TGF-β signaling in epithelial–mesenchymal transition and invasion/metastasis. The TGF-β Family (eds Derynck, R. & Miyazono, K.) (Cold Spring Harbor Press, Cold Spring Harbor, NY, 2007).
Oft, M., Akhurst, R. J. & Balmain, A. Metastasis is driven by sequential elevation of H-Ras and Smad2 levels. Nature Cell Biol. 4, 487–494 (2002).
Yang, J. & Liu, Y. Dissection of key events in tubular epithelial to myofibroblast transition and its implications in renal interstitial fibrosis. Am. J. Pathol. 159, 1465–1475 (2001).
Gadue, P., Huber, T. L., Paddison, P. J. & Keller, G. M. Wnt and TGF-β signaling are required for the induction of an in vitro model of primitive streak formation using embryonic stem cells. Proc. Natl Acad. Sci. USA 103, 16806–16811 (2006).
Cordenonsi, M. et al. Integration of TGF-β and Ras/MAPK signaling through p53 phosphorylation. Science 315, 840–843 (2007).
Sirard, C. et al. The tumor suppressor gene Smad4/Dpc4 is required for gastrulation and later for anterior development of the mouse embryo. Genes Dev. 12, 107–119 (1998).
Wang, J. et al. Defective ALK5 signaling in the neural crest leads to increased postmigratory neural crest cell apoptosis and severe outflow tract defects. BMC Dev. Biol. 6, 51 (2006).
Mercado-Pimentel, M. E., Hubbard, A. D. & Runyan, R. B. Endoglin and ALK5 regulate epithelial–mesenchymal transformation during cardiac valve formation. Dev. Biol. 304, 420–432 (2007).
Desgrosellier, J. S., Mundell, N. A., McDonnell, M. A., Moses, H. L. & Barnett, J. V. Activin receptor-like kinase 2 and Smad6 regulate epithelial–mesenchymal transformation during cardiac valve formation. Dev. Biol. 280, 201–210 (2005).
Proetzel, G. et al. Transforming growth factor-β3 is required for secondary palate fusion. Nature Genet. 11, 409–414 (1995).
Iwano, M. et al. Evidence that fibroblasts derive from epithelium during tissue fibrosis. J. Clin. Invest. 110, 341–350 (2002).
Kim, K. K. et al. Alveolar epithelial cell mesenchymal transition develops in vivo during pulmonary fibrosis and is regulated by the extracellular matrix. Proc. Natl Acad. Sci. USA 103, 13180–13185 (2006).
Willis, B. C. et al. Induction of epithelial–mesenchymal transition in alveolar epithelial cells by transforming growth factor-β1: potential role in idiopathic pulmonary fibrosis. Am. J. Pathol. 166, 1321–1332 (2005).
Paruchuri, S. et al. Human pulmonary valve progenitor cells exhibit endothelial/mesenchymal plasticity in response to vascular endothelial growth factor-A and transforming growth factor-β2. Circ. Res. 99, 861–869 (2006).
Ju, W. et al. Deletion of Smad2 in mouse liver reveals novel functions in hepatocyte growth and differentiation. Mol. Cell. Biol. 26, 654–67 (2006).
Roberts, A. B. et al. Smad3 is key to TGF-β-mediated epithelial-to-mesenchymal transition, fibrosis, tumor suppression and metastasis. Cytokine Growth Factor Rev. 17, 19–27 (2006).
Janda, E. et al. Ras and TGF-β cooperatively regulate epithelial cell plasticity and metastasis: dissection of Ras signaling pathways. J. Cell Biol. 156, 299–313 (2002).
Kane, C. L., Keehn, C. A., Smithberger, E. & Glass, L. F. Histopathology of cutaneous squamous cell carcinoma and its variants. Semin. Cutan. Med. Surg. 23, 54–61 (2004).
Dandachi, N. et al. Co-expression of tenascin-C and vimentin in human breast cancer cells indicates phenotypic transdifferentiation during tumour progression: correlation with histopathological parameters, hormone receptors, and oncoproteins. J. Pathol. 193, 181–189 (2001).
Aker, F. V., Bas, Y., Ozkara, S. & Peker, O. Spindle cell metaplasia in follicular adenoma of the thyroid gland: case report and review of the literature. Endocr. J. 51, 457–461 (2004).
Petersen, O. W. et al. Epithelial to mesenchymal transition in human breast cancer can provide a nonmalignant stroma. Am. J. Pathol. 162, 391–402 (2003).
Yang, J. et al. Twist, a master regulator of morphogenesis, plays an essential role in tumor metastasis. Cell 117, 927–939 (2004).
Heldin, C.-H., Rubin, K., Pietras, K. & Ostman, A. High interstitial fluid pressure — an obstacle in cancer therapy. Nature Rev. Cancer 4, 806–813 (2004).
Salnikov, A. V. et al. Inhibition of TGF-β modulates macrophages and vessel maturation in parallel to a lowering of interstitial fluid pressure in experimental carcinoma. Lab. Invest. 85, 512–521 (2005).
Kano, M. R. et al. Improvement of cancer-targeting therapy, using nanocarriers for intractable solid tumors by inhibition of TGF-β signaling. Proc. Natl Acad. Sci. USA 104, 3460–3465 (2007).
Derynck, R., Choy, L. & Alliston, T. Smads in mesenchymal differentiation. In Smad Signal Transduction (eds ten Dijke, P. & Heldin, C.-H.) 93–112 (2006). (Springer, The Netherlands)
Hjelmeland, A. B., Schilling, S. H., Guo, X., Quarles, D. & Wang, X. F. Loss of Smad3-mediated negative regulation of Runx2 activity leads to an alteration in cell fate determination. Mol. Cell. Biol. 25, 9460–9468 (2005).
Lee, S.-J. Regulation of muscle mass by myostatin. Annu. Rev. Cell Dev. Biol. 20, 61–86 (2004).
Bellinge, R. H., Liberles, D. A., Iaschi, S. P., O'Brien, P. A. & Tay, G. K. Myostatin and its implications on animal breeding: a review. Anim. Genet. 36, 1–6 (2005).
Schuelke, M. et al. Myostatin mutation associated with gross muscle hypertrophy in a child. N. Engl. J. Med. 350, 2682–2688 (2004).
McCroskery, S., Thomas, M., Maxwell, L., Sharma, M. & Kambadur, R. Myostatin negatively regulates satellite cell activation and self-renewal. J. Cell Biol. 162, 1135–1147 (2003).
Wagner, K. R., Liu, X., Chang, X. & Allen, R. E. Muscle regeneration in the prolonged absence of myostatin. Proc. Natl Acad. Sci. USA 102, 2519–2524 (2005).
Carnac, G., Ricaud, S., Vernus, B. & Bonnieu, A. Myostatin: biology and clinical relevance. Mini Rev. Med. Chem. 6, 765–770 (2006).
Katagiri, T. et al. Bone morphogenetic protein-2 converts the differentiation pathway of C2C12 myoblasts into the osteoblast lineage. J. Cell Biol. 127, 1755–1766 (1994).
Nakashima, K. et al. BMP2-mediated alteration in the developmental pathway of fetal mouse brain cells from neurogenesis to astrocytogenesis. Proc. Natl Acad. Sci. USA 98, 5868–5873 (2001).
Chen, D., Zhao, M. & Mundy, G. R. Bone morphogenetic proteins. Growth Factors. 22, 233–241 (2004).
Shafritz, A. B. et al. Overexpression of an osteogenic morphogen in fibrodysplasia ossificans progressiva. N. Engl. J. Med. 335, 555–561 (1996).
Shore, E. M. et al. A recurrent mutation in the BMP type I receptor ACVR1 causes inherited and sporadic fibrodysplasia ossificans progressiva. Nature Genet. 38, 525–527 (2006).
Skillington, J., Choy, L. & Derynck, R. Bone morphogenetic protein and retinoic acid signaling cooperate to induce osteoblast differentiation of preadipocytes. J. Cell Biol. 159, 135–146 (2002).
Wan, D. C. et al. Osteogenic differentiation of mouse adipose-derived adult stromal cells requires retinoic acid and bone morphogenetic protein receptor type IB signaling. Proc. Natl Acad. Sci. USA 103, 12335–12340 (2006).
Xu, Y., Malladi, P., Wagner, D. R. & Longaker, M. T. Adipose-derived mesenchymal cells as a potential cell source for skeletal regeneration. Curr. Opin. Mol. Ther. 7, 300–305 (2005).
Cowan, C. M. et al. Adipose-derived adult stromal cells heal critical-size mouse calvarial defects. Nature Biotechnol. 22, 560–567 (2004).
Lendeckel, S. et al. Autologous stem cells (adipose) and fibrin glue used to treat widespread traumatic calvarial defects: case report. J. Craniomaxillofac. Surg. 32, 370–373 (2004).
Weston, A. D., Hoffman, L. M. & Underhill, T. M. Revisiting the role of retinoid signaling in skeletal development. Birth Defects Res. C Embryo Today 69, 156–173 (2003).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Derynck, R., Akhurst, R. Differentiation plasticity regulated by TGF-β family proteins in development and disease. Nat Cell Biol 9, 1000–1004 (2007). https://doi.org/10.1038/ncb434
Issue Date:
DOI: https://doi.org/10.1038/ncb434