Human mesenchymal stem cells exert potent antitumorigenic effects in a model of Kaposi's sarcoma
| العنوان: | Human mesenchymal stem cells exert potent antitumorigenic effects in a model of Kaposi's sarcoma |
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| المؤلفون: | Ahn T Q Nguyen, Toren Finkel, William Reid, Gentzon Hall, Mark Raffeld, Stasia A. Anderson, Terry B. Rogers, Ilsa I Rovira, Jianhu Zhang, Christian A. Combs, Aarif Y. Khakoo, Daniela Malide, William G. Stetler-Stevenson, Marvin S. Reitz, Mohamed F. Elshal, Shibani Pati, Joseph A. Frank |
| المصدر: | The Journal of Experimental Medicine |
| بيانات النشر: | The Rockefeller University Press, 2006. |
| سنة النشر: | 2006 |
| مصطلحات موضوعية: | Male, Stromal cell, Immunology, Cell, Transplantation, Heterologous, Mice, Nude, Biology, medicine.disease_cause, Mesenchymal Stem Cell Transplantation, Article, Mice, medicine, Tumor Cells, Cultured, Immunology and Allergy, Animals, Protein kinase B, Kaposi's sarcoma, Sarcoma, Kaposi, Mesenchymal stem cell, Graft vs Tumor Effect, Mesenchymal Stem Cells, Cell Biology, Articles, Neoplasms, Experimental, medicine.disease, Enzyme Activation, Oncogene Protein v-akt, Disease Models, Animal, medicine.anatomical_structure, Cell culture, Cancer research, Stem cell, Stromal Cells, Carcinogenesis, Neoplasm Transplantation |
| الوصف: | Emerging evidence suggests that both human stem cells and mature stromal cells can play an important role in the development and growth of human malignancies. In contrast to these tumor-promoting properties, we observed that in an in vivo model of Kaposi's sarcoma (KS), intravenously (i.v.) injected human mesenchymal stem cells (MSCs) home to sites of tumorigenesis and potently inhibit tumor growth. We further show that human MSCs can inhibit the in vitro activation of the Akt protein kinase within some but not all tumor and primary cell lines. The inhibition of Akt activity requires the MSCs to make direct cell–cell contact and can be inhibited by a neutralizing antibody against E-cadherin. We further demonstrate that in vivo, Akt activation within KS cells is potently down-regulated in areas adjacent to MSC infiltration. Finally, the in vivo tumor-suppressive effects of MSCs correlates with their ability to inhibit target cell Akt activity, and KS tumors engineered to express a constitutively activated Akt construct are no longer sensitive to i.v. MSC administration. These results suggest that in contrast to other stem cells or normal stromal cells, MSCs possess intrinsic antineoplastic properties and that this stem cell population might be of particular utility for treating those human malignancies characterized by dysregulated Akt. |
| اللغة: | English |
| تدمد: | 1540-9538 0022-1007 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fc6a8132b838e920f8c5e26d95036bdeTest http://europepmc.org/articles/PMC2121206Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....fc6a8132b838e920f8c5e26d95036bde |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15409538 00221007 |
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