Isoform specificity of progesterone receptor antibodies
- Autores
- Fabris, Victoria Teresa; Abascal, Maria Florencia; Giulianelli, Sebastian Jesus; May, María; Sequeira, Gonzalo Ricardo; Jacobsen, Britta; Lombès, Marc; Han, Julie; Tran, Luan; Molinolo, Alfredo; Lanari, Claudia Lee Malvina
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Progesterone receptors (PR) are prognostic and predictive biomarkers in hormone-dependent cancers. Twomain PR isoforms have been described, PRB and PRA, that differ only in that PRB has 164 extra N-terminalamino acids. It has been reported that several antibodies empirically exclusively recognize PRA in formalinfixedparaffin-embedded (FFPE) tissues. To confirm these findings, we used human breast cancer xenograftmodels, T47D-YA and -YB cells expressing PRA or PRB, respectively, MDA-MB-231 cells modified to synthesizePRB, and MDA-MB-231/iPRAB cells which can bi-inducibly express either PRA or PRB. Cells were injectedinto immunocompromised mice to generate tumours exclusively expressing PRA or PRB. PR isoform expressionwas verified using immunoblots. FFPE samples from the same tumours were studied by immunohistochemistryusing H-190, clone 636, clone 16, and Ab-6 anti-PR antibodies, the latter exclusively recognizing PRB. Exceptfor Ab-6, all antibodies displayed a similar staining pattern. Our results indicate that clones 16, 636, and theH-190 antibody recognize both PR isoforms. They point to the need for more stringency in evaluating thetrue specificity of purported PRA-specific antibodies as the PRA/PRB ratio may have prognostic and predictivevalue in breast cancer.
Fil: Fabris, Victoria Teresa. 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: Abascal, Maria Florencia. 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: Giulianelli, Sebastian Jesus. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Biología de Organismos Marinos; Argentina
Fil: May, María. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica; Argentina
Fil: Sequeira, Gonzalo Ricardo. 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: Jacobsen, Britta. University of Colorado Anschutz Medical Campus; Estados Unidos
Fil: Lombès, Marc. Inserm; Francia
Fil: Han, Julie. Moore´s Cancer Center; Estados Unidos
Fil: Tran, Luan. Moore´s Cancer Center; Estados Unidos
Fil: Molinolo, Alfredo. 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: Lanari, Claudia Lee Malvina. 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 - Materia
-
PROGESTERONE RECEPTOR ISOFORMS
BREAST CANCER MODELS; XENOGRAFTS
SPECIFIC ANTIBODIES
IMMUNOHISTOCHEMISTRY - 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:11336/37345
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oai:ri.conicet.gov.ar:11336/37345 |
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spelling |
Isoform specificity of progesterone receptor antibodiesFabris, Victoria TeresaAbascal, Maria FlorenciaGiulianelli, Sebastian JesusMay, MaríaSequeira, Gonzalo RicardoJacobsen, BrittaLombès, MarcHan, JulieTran, LuanMolinolo, AlfredoLanari, Claudia Lee MalvinaPROGESTERONE RECEPTOR ISOFORMSBREAST CANCER MODELS; XENOGRAFTSSPECIFIC ANTIBODIESIMMUNOHISTOCHEMISTRYhttps://purl.org/becyt/ford/3.1https://purl.org/becyt/ford/3Progesterone receptors (PR) are prognostic and predictive biomarkers in hormone-dependent cancers. Twomain PR isoforms have been described, PRB and PRA, that differ only in that PRB has 164 extra N-terminalamino acids. It has been reported that several antibodies empirically exclusively recognize PRA in formalinfixedparaffin-embedded (FFPE) tissues. To confirm these findings, we used human breast cancer xenograftmodels, T47D-YA and -YB cells expressing PRA or PRB, respectively, MDA-MB-231 cells modified to synthesizePRB, and MDA-MB-231/iPRAB cells which can bi-inducibly express either PRA or PRB. Cells were injectedinto immunocompromised mice to generate tumours exclusively expressing PRA or PRB. PR isoform expressionwas verified using immunoblots. FFPE samples from the same tumours were studied by immunohistochemistryusing H-190, clone 636, clone 16, and Ab-6 anti-PR antibodies, the latter exclusively recognizing PRB. Exceptfor Ab-6, all antibodies displayed a similar staining pattern. Our results indicate that clones 16, 636, and theH-190 antibody recognize both PR isoforms. They point to the need for more stringency in evaluating thetrue specificity of purported PRA-specific antibodies as the PRA/PRB ratio may have prognostic and predictivevalue in breast cancer.Fil: Fabris, Victoria Teresa. 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: Abascal, Maria Florencia. 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: Giulianelli, Sebastian Jesus. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Biología de Organismos Marinos; ArgentinaFil: May, María. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica; ArgentinaFil: Sequeira, Gonzalo Ricardo. 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: Jacobsen, Britta. University of Colorado Anschutz Medical Campus; Estados UnidosFil: Lombès, Marc. Inserm; FranciaFil: Han, Julie. Moore´s Cancer Center; Estados UnidosFil: Tran, Luan. Moore´s Cancer Center; Estados UnidosFil: Molinolo, Alfredo. 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: Lanari, Claudia Lee Malvina. 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; ArgentinaWiley Online Library2017-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/37345Fabris, Victoria Teresa; Abascal, Maria Florencia; Giulianelli, Sebastian Jesus; May, María; Sequeira, Gonzalo Ricardo; et al.; Isoform specificity of progesterone receptor antibodies; Wiley Online Library; The Journal of Pathology: Clinical Research; 3; 4; 10-2017; 227-2332056-4538CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/cjp2.83/abstractinfo:eu-repo/semantics/altIdentifier/doi/10.1002/cjp2.83info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:06:50Zoai:ri.conicet.gov.ar:11336/37345instacron: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:34982025-09-03 10:06:51.248CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Isoform specificity of progesterone receptor antibodies |
title |
Isoform specificity of progesterone receptor antibodies |
spellingShingle |
Isoform specificity of progesterone receptor antibodies Fabris, Victoria Teresa PROGESTERONE RECEPTOR ISOFORMS BREAST CANCER MODELS; XENOGRAFTS SPECIFIC ANTIBODIES IMMUNOHISTOCHEMISTRY |
title_short |
Isoform specificity of progesterone receptor antibodies |
title_full |
Isoform specificity of progesterone receptor antibodies |
title_fullStr |
Isoform specificity of progesterone receptor antibodies |
title_full_unstemmed |
Isoform specificity of progesterone receptor antibodies |
title_sort |
Isoform specificity of progesterone receptor antibodies |
dc.creator.none.fl_str_mv |
Fabris, Victoria Teresa Abascal, Maria Florencia Giulianelli, Sebastian Jesus May, María Sequeira, Gonzalo Ricardo Jacobsen, Britta Lombès, Marc Han, Julie Tran, Luan Molinolo, Alfredo Lanari, Claudia Lee Malvina |
author |
Fabris, Victoria Teresa |
author_facet |
Fabris, Victoria Teresa Abascal, Maria Florencia Giulianelli, Sebastian Jesus May, María Sequeira, Gonzalo Ricardo Jacobsen, Britta Lombès, Marc Han, Julie Tran, Luan Molinolo, Alfredo Lanari, Claudia Lee Malvina |
author_role |
author |
author2 |
Abascal, Maria Florencia Giulianelli, Sebastian Jesus May, María Sequeira, Gonzalo Ricardo Jacobsen, Britta Lombès, Marc Han, Julie Tran, Luan Molinolo, Alfredo Lanari, Claudia Lee Malvina |
author2_role |
author author author author author author author author author author |
dc.subject.none.fl_str_mv |
PROGESTERONE RECEPTOR ISOFORMS BREAST CANCER MODELS; XENOGRAFTS SPECIFIC ANTIBODIES IMMUNOHISTOCHEMISTRY |
topic |
PROGESTERONE RECEPTOR ISOFORMS BREAST CANCER MODELS; XENOGRAFTS SPECIFIC ANTIBODIES IMMUNOHISTOCHEMISTRY |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/3.1 https://purl.org/becyt/ford/3 |
dc.description.none.fl_txt_mv |
Progesterone receptors (PR) are prognostic and predictive biomarkers in hormone-dependent cancers. Twomain PR isoforms have been described, PRB and PRA, that differ only in that PRB has 164 extra N-terminalamino acids. It has been reported that several antibodies empirically exclusively recognize PRA in formalinfixedparaffin-embedded (FFPE) tissues. To confirm these findings, we used human breast cancer xenograftmodels, T47D-YA and -YB cells expressing PRA or PRB, respectively, MDA-MB-231 cells modified to synthesizePRB, and MDA-MB-231/iPRAB cells which can bi-inducibly express either PRA or PRB. Cells were injectedinto immunocompromised mice to generate tumours exclusively expressing PRA or PRB. PR isoform expressionwas verified using immunoblots. FFPE samples from the same tumours were studied by immunohistochemistryusing H-190, clone 636, clone 16, and Ab-6 anti-PR antibodies, the latter exclusively recognizing PRB. Exceptfor Ab-6, all antibodies displayed a similar staining pattern. Our results indicate that clones 16, 636, and theH-190 antibody recognize both PR isoforms. They point to the need for more stringency in evaluating thetrue specificity of purported PRA-specific antibodies as the PRA/PRB ratio may have prognostic and predictivevalue in breast cancer. Fil: Fabris, Victoria Teresa. 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: Abascal, Maria Florencia. 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: Giulianelli, Sebastian Jesus. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Biología de Organismos Marinos; Argentina Fil: May, María. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica; Argentina Fil: Sequeira, Gonzalo Ricardo. 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: Jacobsen, Britta. University of Colorado Anschutz Medical Campus; Estados Unidos Fil: Lombès, Marc. Inserm; Francia Fil: Han, Julie. Moore´s Cancer Center; Estados Unidos Fil: Tran, Luan. Moore´s Cancer Center; Estados Unidos Fil: Molinolo, Alfredo. 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: Lanari, Claudia Lee Malvina. 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 |
description |
Progesterone receptors (PR) are prognostic and predictive biomarkers in hormone-dependent cancers. Twomain PR isoforms have been described, PRB and PRA, that differ only in that PRB has 164 extra N-terminalamino acids. It has been reported that several antibodies empirically exclusively recognize PRA in formalinfixedparaffin-embedded (FFPE) tissues. To confirm these findings, we used human breast cancer xenograftmodels, T47D-YA and -YB cells expressing PRA or PRB, respectively, MDA-MB-231 cells modified to synthesizePRB, and MDA-MB-231/iPRAB cells which can bi-inducibly express either PRA or PRB. Cells were injectedinto immunocompromised mice to generate tumours exclusively expressing PRA or PRB. PR isoform expressionwas verified using immunoblots. FFPE samples from the same tumours were studied by immunohistochemistryusing H-190, clone 636, clone 16, and Ab-6 anti-PR antibodies, the latter exclusively recognizing PRB. Exceptfor Ab-6, all antibodies displayed a similar staining pattern. Our results indicate that clones 16, 636, and theH-190 antibody recognize both PR isoforms. They point to the need for more stringency in evaluating thetrue specificity of purported PRA-specific antibodies as the PRA/PRB ratio may have prognostic and predictivevalue in breast cancer. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-10 |
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/11336/37345 Fabris, Victoria Teresa; Abascal, Maria Florencia; Giulianelli, Sebastian Jesus; May, María; Sequeira, Gonzalo Ricardo; et al.; Isoform specificity of progesterone receptor antibodies; Wiley Online Library; The Journal of Pathology: Clinical Research; 3; 4; 10-2017; 227-233 2056-4538 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/37345 |
identifier_str_mv |
Fabris, Victoria Teresa; Abascal, Maria Florencia; Giulianelli, Sebastian Jesus; May, María; Sequeira, Gonzalo Ricardo; et al.; Isoform specificity of progesterone receptor antibodies; Wiley Online Library; The Journal of Pathology: Clinical Research; 3; 4; 10-2017; 227-233 2056-4538 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/cjp2.83/abstract info:eu-repo/semantics/altIdentifier/doi/10.1002/cjp2.83 |
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 application/pdf |
dc.publisher.none.fl_str_mv |
Wiley Online Library |
publisher.none.fl_str_mv |
Wiley Online Library |
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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1842269977070010368 |
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13.13397 |