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Capodanno, Alessandra
Publications (2 of 2) Show all publications
Abrahamsson, A., Capodanno, A., Rzepecka, A. & Dabrosin, C. (2017). Downregulation of tumor suppressive microRNAs in vivo in dense breast tissue of postmenopausal women. OncoTarget, 8(54), 92134-92142
Open this publication in new window or tab >>Downregulation of tumor suppressive microRNAs in vivo in dense breast tissue of postmenopausal women
2017 (English)In: OncoTarget, ISSN 1949-2553, E-ISSN 1949-2553, Vol. 8, no 54, p. 92134-92142Article in journal (Refereed) Published
Abstract [en]

Women with dense breast tissue on mammography are at higher risk of developing breast cancer but the underlying mechanisms are not well understood. De-regulation of microRNAs (miRNAs) has been associated with the onset of breast cancer. miRNAs in the extracellular space participate in the regulation of the local tissue microenvironment. Here, we recruited 39 healthy postmenopausal women attending their mammography-screen that were assessed having extreme dense or entirely fatty breasts (nondense). Microdialysis was performed in breast tissue and a reference catheter was inserted in abdominal subcutaneous fat for local sampling of extracellular compounds. Three miRNAs, associated with tumor suppression, miR-193b, miR-365a, and miR-452 were significantly down-regulated in dense breast tissue compared with nondense breast tissue. In addition, miR-452 exhibited significant negative correlations with several pro-inflammatory cytokines in vivo, which was confirmed in vitro by overexpression of miR-452 in breast cancer cells. No differences were found of miR-21, -29a, -30c, 146a, -148a, -203, or -451 in breast tissue and no miRs were different in plasma. Extracellular miRNAs may be among factors that should be included in studies of novel prevention strategies for breast cancer.

Place, publisher, year, edition, pages
Impact Journals LCC, 2017
Keywords
mammary gland; microdialysis; mammography; extracellular miRNA; inflammation
National Category
Cancer and Oncology
Identifiers
urn:nbn:se:liu:diva-143240 (URN)10.18632/oncotarget.20906 (DOI)000414606800026 ()29190903 (PubMedID)2-s2.0-85032692532 (Scopus ID)
Note

Funding Agencies|Swedish Cancer Society [2015/309]; Swedish Research Council [2013-2457]; LiU-Cancer; ALF of Linkoping University Hospital

Available from: 2017-11-27 Created: 2017-11-27 Last updated: 2018-04-16Bibliographically approved
Gnosa, S., Capodanno, A., Dahl Ejby Jensen, L. & Sun, X.-F. (2016). AEG-1 knockdown in colon cancer cell lines inhibits radiation-enhanced migration and invasion in vitro and in a novel in vivo zebrafish model. OncoTarget, 7(49), 81634-81644
Open this publication in new window or tab >>AEG-1 knockdown in colon cancer cell lines inhibits radiation-enhanced migration and invasion in vitro and in a novel in vivo zebrafish model
2016 (English)In: OncoTarget, ISSN 1949-2553, E-ISSN 1949-2553, Vol. 7, no 49, p. 81634-81644Article in journal (Refereed) Published
Abstract [en]

Background Radiotherapy is a well-established anti-cancer treatment. Although radiotherapy has been shown to significantly decrease the local relapse in rectal cancer patients, the rate of distant metastasis is still very high. Several studies have shown that radiation enhances migration and invasion both in vitro and in vivo. The aim of this study was to evaluate whether AEG-1 is involved in radiation-enhanced migration and invasion in vitro and in a novel in vivo zebrafish model.

Materials and Methods We evaluated the involvement of AEG-1 in migration and invasion and radiation-enhanced migration and invasion by Boyden chamber assay in three colon cancer cell lines and respective AEG-1 knockdown cell lines. Furthermore, we injected the cells in zebrafish embryos and evaluated the amount of disseminated cells into the tail.

Results Migration and invasion was decreased in all the AEG-1 knockdown cell lines. Furthermore, radiation enhanced migration and invasion, while AEG-1 knockdown could abolish this effect. The results from the zebrafish model confirmed the results obtained in vitro. MMP-9 secretion and expression were decreased in AEG-1 knockdown cells.

Conclusion Our results demonstrate that AEG-1 knockdown inhibits migration and invasion, as well as radiation-enhanced migration and invasion. We speculate that this is done via the downregulation of the intrinsic or radiation-enhanced MMP-9 expression. The zebrafish model can be used to study early events in radiation-enhanced invasion.

Place, publisher, year, edition, pages
Impact Journals, 2016
Keywords
AEG-1, MTDH, LYRIC, Colon cancer, Zebrafish, Transwell migration and invasion, Radiation
National Category
Cancer and Oncology
Identifiers
urn:nbn:se:liu:diva-121866 (URN)10.18632/oncotarget.13155 (DOI)000389877500121 ()27835571 (PubMedID)
Note

The previous status of this publication was manuscript

Funding agencies: Swedish Cancer Foundation; Swedish Research Council; Health Research Council in South-East Sweden; Onkologiska klinikernas i Linkoping

Available from: 2015-10-12 Created: 2015-10-12 Last updated: 2017-12-01Bibliographically approved
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