Fatty acid synthase is a key enabler for endocrine resistance in heregulin-overexpressing luminal b-like breast cancer
- Autores
- Menendez, Javier A.; Mehmi, Inderjit; Papadimitropoulou, Adriana; Steen, Travis Vander; Cuyàs, Elisabet; Verdura, Sara; Espinoza, Ingrid; Vellón, Luciano; Atlas, Ella; Lupu, Ruth
- Año de publicación
- 2020
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- HER2 transactivation by the HER3 ligand heregulin (HRG) promotes an endocrine-resistant phenotype in the estrogen receptor-positive (ER+) luminal-B subtype of breast cancer. The underlying biological mechanisms that link them are, however, incompletely understood. Here, we evaluated the putative role of the lipogenic enzyme fatty acid synthase (FASN) as a major cause of HRG-driven endocrine resistance in ER+/HER2-negative breast cancer cells. MCF-7 cells engineered to stably overexpress HRG (MCF-7/HRG), an in vitro model of tamoxifen/fulvestrant-resistant luminal B-like breast cancer, showed a pronounced up-regulation of FASN gene/FASN protein expression. Autocrine HRG up-regulated FASN expression via HER2 transactivation and downstream activation of PI-3K/AKT and MAPK-ERK1/2 signaling pathways. The HRG-driven FASN-overexpressing phenotype was fully prevented in MCF-7 cells expressing a structural deletion mutant of HRG that is sequestered in a cellular compartment and lacks the ability to promote endocrine-resistance in an autocrine manner. Pharmacological inhibition of FASN activity blocked the estradiol-independent and tamoxifen/fulvestrant-refractory ability of MCF-7/HRG cells to anchorage-independently grow in soft-agar. In vivo treatment with a FASN inhibitor restored the anti-tumor activity of tamoxifen and fulvestrant against fast-growing, hormone-resistant MCF-7/HRG xenograft tumors in mice. Overall, these findings implicate FASN as a key enabler for endocrine resistance in HRG+/HER2-breast cancer and highlight the therapeutic potential of FASN inhibitors for the treatment of endocrine therapy-resistant luminal-B breast cancer.
Fil: Menendez, Javier A.. Institut D'investigació Biomèdica de Girona Dr. Josep Trueta; España. Institut Català d'Oncologia ; España
Fil: Mehmi, Inderjit. The Angeles Clinic And Research Institute; Estados Unidos
Fil: Papadimitropoulou, Adriana. Academy of Athens; Grecia
Fil: Steen, Travis Vander. Mayo Clinic; Estados Unidos
Fil: Cuyàs, Elisabet. Institut D'investigació Biomèdica de Girona Dr. Josep Trueta; España. Institut Català d'Oncologia ; España
Fil: Verdura, Sara. Institut Català d'Oncologia ; España. Institut D'investigació Biomèdica de Girona Dr. Josep Trueta; España
Fil: Espinoza, Ingrid. University of Mississippi; Estados Unidos
Fil: Vellón, Luciano. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; Argentina
Fil: Atlas, Ella. University of Ottawa; Canadá
Fil: Lupu, Ruth. Mayo Clinic Cancer Center; Estados Unidos. Mayo Clinic; Estados Unidos. Academy of Athens; Grecia - Materia
-
ENDOCRINE RESISTANCE
FULVESTRANT
LUMINAL
TAMOXIFEN - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/132522
Ver los metadatos del registro completo
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Fatty acid synthase is a key enabler for endocrine resistance in heregulin-overexpressing luminal b-like breast cancerMenendez, Javier A.Mehmi, InderjitPapadimitropoulou, AdrianaSteen, Travis VanderCuyàs, ElisabetVerdura, SaraEspinoza, IngridVellón, LucianoAtlas, EllaLupu, RuthENDOCRINE RESISTANCEFULVESTRANTLUMINALTAMOXIFENhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1https://purl.org/becyt/ford/3.1https://purl.org/becyt/ford/3HER2 transactivation by the HER3 ligand heregulin (HRG) promotes an endocrine-resistant phenotype in the estrogen receptor-positive (ER+) luminal-B subtype of breast cancer. The underlying biological mechanisms that link them are, however, incompletely understood. Here, we evaluated the putative role of the lipogenic enzyme fatty acid synthase (FASN) as a major cause of HRG-driven endocrine resistance in ER+/HER2-negative breast cancer cells. MCF-7 cells engineered to stably overexpress HRG (MCF-7/HRG), an in vitro model of tamoxifen/fulvestrant-resistant luminal B-like breast cancer, showed a pronounced up-regulation of FASN gene/FASN protein expression. Autocrine HRG up-regulated FASN expression via HER2 transactivation and downstream activation of PI-3K/AKT and MAPK-ERK1/2 signaling pathways. The HRG-driven FASN-overexpressing phenotype was fully prevented in MCF-7 cells expressing a structural deletion mutant of HRG that is sequestered in a cellular compartment and lacks the ability to promote endocrine-resistance in an autocrine manner. Pharmacological inhibition of FASN activity blocked the estradiol-independent and tamoxifen/fulvestrant-refractory ability of MCF-7/HRG cells to anchorage-independently grow in soft-agar. In vivo treatment with a FASN inhibitor restored the anti-tumor activity of tamoxifen and fulvestrant against fast-growing, hormone-resistant MCF-7/HRG xenograft tumors in mice. Overall, these findings implicate FASN as a key enabler for endocrine resistance in HRG+/HER2-breast cancer and highlight the therapeutic potential of FASN inhibitors for the treatment of endocrine therapy-resistant luminal-B breast cancer.Fil: Menendez, Javier A.. Institut D'investigació Biomèdica de Girona Dr. Josep Trueta; España. Institut Català d'Oncologia ; EspañaFil: Mehmi, Inderjit. The Angeles Clinic And Research Institute; Estados UnidosFil: Papadimitropoulou, Adriana. Academy of Athens; GreciaFil: Steen, Travis Vander. Mayo Clinic; Estados UnidosFil: Cuyàs, Elisabet. Institut D'investigació Biomèdica de Girona Dr. Josep Trueta; España. Institut Català d'Oncologia ; EspañaFil: Verdura, Sara. Institut Català d'Oncologia ; España. Institut D'investigació Biomèdica de Girona Dr. Josep Trueta; EspañaFil: Espinoza, Ingrid. University of Mississippi; Estados UnidosFil: Vellón, Luciano. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; ArgentinaFil: Atlas, Ella. University of Ottawa; CanadáFil: Lupu, Ruth. Mayo Clinic Cancer Center; Estados Unidos. Mayo Clinic; Estados Unidos. Academy of Athens; GreciaMDPI AG2020-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/132522Menendez, Javier A.; Mehmi, Inderjit; Papadimitropoulou, Adriana; Steen, Travis Vander; Cuyàs, Elisabet; et al.; Fatty acid synthase is a key enabler for endocrine resistance in heregulin-overexpressing luminal b-like breast cancer; MDPI AG; International Journal of Molecular Sciences; 21; 20; 10-2020; 1-141661-65961422-0067CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/1422-0067/21/20/7661info:eu-repo/semantics/altIdentifier/doi/10.3390/ijms21207661info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:34:50Zoai:ri.conicet.gov.ar:11336/132522instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:34:50.358CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Fatty acid synthase is a key enabler for endocrine resistance in heregulin-overexpressing luminal b-like breast cancer |
title |
Fatty acid synthase is a key enabler for endocrine resistance in heregulin-overexpressing luminal b-like breast cancer |
spellingShingle |
Fatty acid synthase is a key enabler for endocrine resistance in heregulin-overexpressing luminal b-like breast cancer Menendez, Javier A. ENDOCRINE RESISTANCE FULVESTRANT LUMINAL TAMOXIFEN |
title_short |
Fatty acid synthase is a key enabler for endocrine resistance in heregulin-overexpressing luminal b-like breast cancer |
title_full |
Fatty acid synthase is a key enabler for endocrine resistance in heregulin-overexpressing luminal b-like breast cancer |
title_fullStr |
Fatty acid synthase is a key enabler for endocrine resistance in heregulin-overexpressing luminal b-like breast cancer |
title_full_unstemmed |
Fatty acid synthase is a key enabler for endocrine resistance in heregulin-overexpressing luminal b-like breast cancer |
title_sort |
Fatty acid synthase is a key enabler for endocrine resistance in heregulin-overexpressing luminal b-like breast cancer |
dc.creator.none.fl_str_mv |
Menendez, Javier A. Mehmi, Inderjit Papadimitropoulou, Adriana Steen, Travis Vander Cuyàs, Elisabet Verdura, Sara Espinoza, Ingrid Vellón, Luciano Atlas, Ella Lupu, Ruth |
author |
Menendez, Javier A. |
author_facet |
Menendez, Javier A. Mehmi, Inderjit Papadimitropoulou, Adriana Steen, Travis Vander Cuyàs, Elisabet Verdura, Sara Espinoza, Ingrid Vellón, Luciano Atlas, Ella Lupu, Ruth |
author_role |
author |
author2 |
Mehmi, Inderjit Papadimitropoulou, Adriana Steen, Travis Vander Cuyàs, Elisabet Verdura, Sara Espinoza, Ingrid Vellón, Luciano Atlas, Ella Lupu, Ruth |
author2_role |
author author author author author author author author author |
dc.subject.none.fl_str_mv |
ENDOCRINE RESISTANCE FULVESTRANT LUMINAL TAMOXIFEN |
topic |
ENDOCRINE RESISTANCE FULVESTRANT LUMINAL TAMOXIFEN |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 https://purl.org/becyt/ford/3.1 https://purl.org/becyt/ford/3 |
dc.description.none.fl_txt_mv |
HER2 transactivation by the HER3 ligand heregulin (HRG) promotes an endocrine-resistant phenotype in the estrogen receptor-positive (ER+) luminal-B subtype of breast cancer. The underlying biological mechanisms that link them are, however, incompletely understood. Here, we evaluated the putative role of the lipogenic enzyme fatty acid synthase (FASN) as a major cause of HRG-driven endocrine resistance in ER+/HER2-negative breast cancer cells. MCF-7 cells engineered to stably overexpress HRG (MCF-7/HRG), an in vitro model of tamoxifen/fulvestrant-resistant luminal B-like breast cancer, showed a pronounced up-regulation of FASN gene/FASN protein expression. Autocrine HRG up-regulated FASN expression via HER2 transactivation and downstream activation of PI-3K/AKT and MAPK-ERK1/2 signaling pathways. The HRG-driven FASN-overexpressing phenotype was fully prevented in MCF-7 cells expressing a structural deletion mutant of HRG that is sequestered in a cellular compartment and lacks the ability to promote endocrine-resistance in an autocrine manner. Pharmacological inhibition of FASN activity blocked the estradiol-independent and tamoxifen/fulvestrant-refractory ability of MCF-7/HRG cells to anchorage-independently grow in soft-agar. In vivo treatment with a FASN inhibitor restored the anti-tumor activity of tamoxifen and fulvestrant against fast-growing, hormone-resistant MCF-7/HRG xenograft tumors in mice. Overall, these findings implicate FASN as a key enabler for endocrine resistance in HRG+/HER2-breast cancer and highlight the therapeutic potential of FASN inhibitors for the treatment of endocrine therapy-resistant luminal-B breast cancer. Fil: Menendez, Javier A.. Institut D'investigació Biomèdica de Girona Dr. Josep Trueta; España. Institut Català d'Oncologia ; España Fil: Mehmi, Inderjit. The Angeles Clinic And Research Institute; Estados Unidos Fil: Papadimitropoulou, Adriana. Academy of Athens; Grecia Fil: Steen, Travis Vander. Mayo Clinic; Estados Unidos Fil: Cuyàs, Elisabet. Institut D'investigació Biomèdica de Girona Dr. Josep Trueta; España. Institut Català d'Oncologia ; España Fil: Verdura, Sara. Institut Català d'Oncologia ; España. Institut D'investigació Biomèdica de Girona Dr. Josep Trueta; España Fil: Espinoza, Ingrid. University of Mississippi; Estados Unidos Fil: Vellón, Luciano. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; Argentina Fil: Atlas, Ella. University of Ottawa; Canadá Fil: Lupu, Ruth. Mayo Clinic Cancer Center; Estados Unidos. Mayo Clinic; Estados Unidos. Academy of Athens; Grecia |
description |
HER2 transactivation by the HER3 ligand heregulin (HRG) promotes an endocrine-resistant phenotype in the estrogen receptor-positive (ER+) luminal-B subtype of breast cancer. The underlying biological mechanisms that link them are, however, incompletely understood. Here, we evaluated the putative role of the lipogenic enzyme fatty acid synthase (FASN) as a major cause of HRG-driven endocrine resistance in ER+/HER2-negative breast cancer cells. MCF-7 cells engineered to stably overexpress HRG (MCF-7/HRG), an in vitro model of tamoxifen/fulvestrant-resistant luminal B-like breast cancer, showed a pronounced up-regulation of FASN gene/FASN protein expression. Autocrine HRG up-regulated FASN expression via HER2 transactivation and downstream activation of PI-3K/AKT and MAPK-ERK1/2 signaling pathways. The HRG-driven FASN-overexpressing phenotype was fully prevented in MCF-7 cells expressing a structural deletion mutant of HRG that is sequestered in a cellular compartment and lacks the ability to promote endocrine-resistance in an autocrine manner. Pharmacological inhibition of FASN activity blocked the estradiol-independent and tamoxifen/fulvestrant-refractory ability of MCF-7/HRG cells to anchorage-independently grow in soft-agar. In vivo treatment with a FASN inhibitor restored the anti-tumor activity of tamoxifen and fulvestrant against fast-growing, hormone-resistant MCF-7/HRG xenograft tumors in mice. Overall, these findings implicate FASN as a key enabler for endocrine resistance in HRG+/HER2-breast cancer and highlight the therapeutic potential of FASN inhibitors for the treatment of endocrine therapy-resistant luminal-B breast cancer. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-10 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/132522 Menendez, Javier A.; Mehmi, Inderjit; Papadimitropoulou, Adriana; Steen, Travis Vander; Cuyàs, Elisabet; et al.; Fatty acid synthase is a key enabler for endocrine resistance in heregulin-overexpressing luminal b-like breast cancer; MDPI AG; International Journal of Molecular Sciences; 21; 20; 10-2020; 1-14 1661-6596 1422-0067 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/132522 |
identifier_str_mv |
Menendez, Javier A.; Mehmi, Inderjit; Papadimitropoulou, Adriana; Steen, Travis Vander; Cuyàs, Elisabet; et al.; Fatty acid synthase is a key enabler for endocrine resistance in heregulin-overexpressing luminal b-like breast cancer; MDPI AG; International Journal of Molecular Sciences; 21; 20; 10-2020; 1-14 1661-6596 1422-0067 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/1422-0067/21/20/7661 info:eu-repo/semantics/altIdentifier/doi/10.3390/ijms21207661 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
MDPI AG |
publisher.none.fl_str_mv |
MDPI AG |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844613080587173888 |
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13.070432 |