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| Pàgina inicial > Articles > Articles publicats > ApoA-I mimetic administration, but not increased apoA-I-containing HDL, inhibits tumour growth in a mouse model of inherited breast cancer |
| Data: | 2016 |
| Resum: | Low levels of high-density lipoprotein cholesterol (HDLc) have been associated with breast cancer risk, but several epidemiologic studies have reported contradictory results with regard to the relationship between apolipoprotein (apo) A-I and breast cancer. We aimed to determine the effects of human apoA-I overexpression and administration of specific apoA-I mimetic peptide (D-4F) on tumour progression by using mammary tumour virus-polyoma middle T-antigen transgenic (PyMT) mice as a model of inherited breast cancer. Expression of human apoA-I in the mice did not affect tumour onset and growth in PyMT transgenic mice, despite an increase in the HDLc level. In contrast, D-4F treatment significantly increased tumour latency and inhibited the development of tumours. The effects of D-4F on tumour development were independent of 27-hydroxycholesterol. However, D-4F treatment reduced the plasma oxidized low-density lipoprotein (oxLDL) levels in mice and prevented oxLDL-mediated proliferative response in human breast adenocarcinoma MCF-7 cells. In conclusion, our study shows that D-4F, but not apoA-I-containing HDL, hinders tumour growth in mice with inherited breast cancer in association with a higher protection against LDL oxidative modification. |
| Ajuts: | Ministerio de Ciencia e Innovación PI11/01076 Ministerio de Economía y Competitividad PI12/00291 Ministerio de Economía y Competitividad PI13/02507 Instituto de Salud Carlos III RD12-0042-0055 Ministerio de Economía y Competitividad SAF2011-23402 |
| Drets: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. |
| Llengua: | Anglès |
| Document: | Article ; recerca ; Versió publicada |
| Matèria: | Animals ; Antineoplastic Agents ; Apolipoprotein A-I ; Breast Neoplasms ; Cell Proliferation ; Cell Survival ; Female ; Humans ; Lipoproteins, LDL ; MCF-7 Cells ; Mice ; Mice, Transgenic ; Molecular Mimicry ; Peptides ; Xenograft Model Antitumor Assays |
| Publicat a: | Scientific reports, Vol. 6 (November 2016) , art. 36387, ISSN 2045-2322 |
11 p, 1.0 MB |