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Estradiol promotes breast cancer cell migration via recruitment and activation of neutrophils
Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för Kirurgi, Ortopedi och Onkologi. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Centrum för kirurgi, ortopedi och cancervård, Onkologiska kliniken US. (Charlotta Dabrosin)
Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för Kirurgi, Ortopedi och Onkologi. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Centrum för kirurgi, ortopedi och cancervård, Onkologiska kliniken US. (Charlotta Dabrosin)
Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för kardiovaskulär medicin. Region Östergötland, Diagnostikcentrum, Klinisk farmakologi. Linköpings universitet, Medicinska fakulteten.
Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för Kirurgi, Ortopedi och Onkologi. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Centrum för kirurgi, ortopedi och cancervård, Onkologiska kliniken US.
2017 (engelsk)Inngår i: Cancer Immunology research, ISSN 2326-6066, Vol. 5, nr 3, s. 234-247, artikkel-id 28159748Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Estradiol (E2) plays a key role in breast cancer progression. Most breast cancer recurrences express the estrogen receptor (ER), but nearly 50% of patients are resistant to antiestrogen therapy. Novel therapeutic targets of ER-positive breast cancers are needed. Protumoral neutrophils expressing the lymphocyte function-associated antigen 1 (LFA-1) integrin may mediate cancer metastasis, and TGFβ1 is the major chemoattractant for neutrophils. The role of E2 in neutrophil–ER+ breast cancer cell interactions is unknown. We studied this in vivo using murine breast cancers in immunocompetent mice and human breast cancers in nude mice. Cell dissemination was evaluated in a zebrafish model, and microdialysis of breast cancer patients was performed. In vitro studies were done with mammosphere cultures of breast cancer cells and human neutrophils. We found that E2 increased the number of LFA-1+ neutrophils recruited to the invasive edge of mouse tumors, increased TGFβ1 secretion and promoted neutrophil infiltration in mammospheres, and induced overexpression of LFA-1 in neutrophils. In zebrafish, in the presence of E2, neutrophils increased dissemination of ER+ breast cancer cells via LFA-1 and TGFβ1, thus causing noninvasive cancer cells to be highly metastatic. Time-lapse imaging in zebrafish revealed close interactions of neutrophils with cancer cells, which drove breast cancer metastasis. We also found that extracellular TGFβ1 was overproduced in human breast cancer tissue compared with adjacent normal breast tissue. Thus, E2 can regulate immune/cancer cell interactions in tumor microenvironments. Our results indicate that extracellular TGFβ1 is a relevant target in human breast cancer.

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American Association for Cancer Research , 2017. Vol. 5, nr 3, s. 234-247, artikkel-id 28159748
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Identifikatorer
URN: urn:nbn:se:liu:diva-135330DOI: 10.1158/2326-6066.CIR-16-0150ISI: 000396023000006PubMedID: 28159748OAI: oai:DiVA.org:liu-135330DiVA, id: diva2:1081078
Forskningsfinansiär
Swedish Cancer Society, 2015/309Swedish Research Council, 2013-2457Linköpings universitet
Merknad

Funding agencies: Swedish Cancer Society [2015/309]; Swedish Research Council [2013-2457]; LiU-Cancer; Research Funds of Linkoping University Hospital

Tilgjengelig fra: 2017-03-13 Laget: 2017-03-13 Sist oppdatert: 2018-05-02

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