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DIGITAL.CSIC
Doctoral thesis . 2014 . Peer-reviewed
Data sources: DIGITAL.CSIC
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Docta Complutense
Doctoral thesis . 2014
Data sources: Docta Complutense
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Células madre de la glándula mamaria : capacidad regenerativa e implicación en la formación de tumores

Authors: Lillo Osuna, María Ángeles;

Células madre de la glándula mamaria : capacidad regenerativa e implicación en la formación de tumores

Abstract

[ES]epitelial mamario, que presenta una estructura ductal. Dentro de las células epiteliares mamarias (MaECs) se encuentra una población de células madre (MaSCs), encargadas de mantener la homeostasis del órgano, y capaces de regenerar glándulas mamarias completas cuando se trasplantan en estromas mamarios libres de epitelio de hembras receptoras prepúberes. Regeneramos glándulas mamarias trasplantando diferentes concentraciones de MaECs de hembras adultas, y el análisis de estas glándulas mamarias reconstituidas nos permitió estimar que 1 célula, de cada 669 MaECs, era capaz de reconstituir una glándula mamaria completa. Además, la reconstitución de glándulas mamarias a partir de trasplantes seriados demostró que las células capaces de regenerar la glándula mamaria tenían capacidad de autorrenovación y de diferenciación, y que por tanto, dichas células eran células madre mamarias (MaSCs). También realizamos trasplantes a partir de distintas concentraciones de la población CD24+CD29alta de las MaECs, ya que está descrito que las MaSCs tienen el fenotipo CD24+CD29alta. El análisis de las glándulas mamarias regeneradas nos permitió estimar que 1 célula, de cada 18,5 células de esta población, desarrollaba una glándula mamaria completa, incluso con estructuras alveolares durante la gestación.(Ver resumen completo en documento adjunto)

[EN](MaECs) are mammary stem cells (MaSCs), which are important for maintaining the mammary gland homeostasis, and are able to reconstitute the entire mammary ductal tree upon transplantation into a de-epithelialized mammary fad pad from prepubertal females. We regenerated mammary glands by transplanting different concentrations of MaECs from adult females, and the analysis of these reconstituted mammary glands allowed us to estimate that 1 out of 669 MaECs could reconstitute a functional mammary gland. In addition, we regenerated mammary glands on serial transplants, which demonstrated the self-renewal and differentiation capacity of the cells able to regenerate the mammary gland. Therefore, these cells represented bona-fide MaSCs. We also made mammary transplants with different concentrations of cells from the CD24+CD29high population of MaECs, since it was described that the MaSCs are CD24+CD29high. The analysis of these regenerated mammary glands allowed us to estimate that 1 out of 18.5 cells from this population gave rise to complete mammary glands, even with alveolar structures during pregnancy.(Full summary in attached document)

185 p.-48 fig.-4 fig.supl.

Peer reviewed

Country
Spain
Keywords

Células madre, Biología celular, 2407 Biología Celular, 611.013.9(043.2), Biología celular (Biología)

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green