Lactate receptor GPR81 drives breast cancer growth and invasiveness through regulation of ECM properties and Notch ligand DLL4

Abstract Background The lactate receptor GPR81 contributes to cancer development through unclear mechanisms. Here, we investigate the roles of GPR81 in three-dimensional (3D) and in vivo growth of breast cancer cells and study the molecular mechanisms involved. Methods GPR81 was stably knocked down...

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Main Authors: Kathrine Lundø, Oksana Dmytriyeva, Louise Spøhr, Eliana Goncalves-Alves, Jiayi Yao, Laia P. Blasco, Mette Trauelsen, Muthulakshmi Ponniah, Marc Severin, Albin Sandelin, Marie Kveiborg, Thue W. Schwartz, Stine F. Pedersen
Format: Article
Language:English
Published: BMC 2023-11-01
Series:BMC Cancer
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Online Access:https://doi.org/10.1186/s12885-023-11631-6
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author Kathrine Lundø
Oksana Dmytriyeva
Louise Spøhr
Eliana Goncalves-Alves
Jiayi Yao
Laia P. Blasco
Mette Trauelsen
Muthulakshmi Ponniah
Marc Severin
Albin Sandelin
Marie Kveiborg
Thue W. Schwartz
Stine F. Pedersen
author_facet Kathrine Lundø
Oksana Dmytriyeva
Louise Spøhr
Eliana Goncalves-Alves
Jiayi Yao
Laia P. Blasco
Mette Trauelsen
Muthulakshmi Ponniah
Marc Severin
Albin Sandelin
Marie Kveiborg
Thue W. Schwartz
Stine F. Pedersen
author_sort Kathrine Lundø
collection DOAJ
description Abstract Background The lactate receptor GPR81 contributes to cancer development through unclear mechanisms. Here, we investigate the roles of GPR81 in three-dimensional (3D) and in vivo growth of breast cancer cells and study the molecular mechanisms involved. Methods GPR81 was stably knocked down (KD) in MCF-7 human breast cancer cells which were subjected to RNA-seq analysis, 3D growth, in situ- and immunofluorescence analyses, and cell viability- and motility assays, combined with KD of key GPR81-regulated genes. Key findings were additionally studied in other breast cancer cell lines and in mammary epithelial cells. Results GPR81 was upregulated in multiple human cancer types and further upregulated by extracellular lactate and 3D growth in breast cancer spheroids. GPR81 KD increased spheroid necrosis, reduced invasion and in vivo tumor growth, and altered expression of genes related to GO/KEGG terms extracellular matrix, cell adhesion, and Notch signaling. Single cell in situ analysis of MCF-7 cells revealed that several GPR81-regulated genes were upregulated in the same cell clusters. Notch signaling, particularly the Notch ligand Delta-like-4 (DLL4), was strikingly downregulated upon GPR81 KD, and DLL4 KD elicited spheroid necrosis and inhibited invasion in a manner similar to GPR81 KD. Conclusions GPR81 supports breast cancer aggressiveness, and in MCF-7 cells, this occurs at least in part via DLL4. Our findings reveal a new GPR81-driven mechanism in breast cancer and substantiate GPR81 as a promising treatment target.
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spelling doaj.art-4dce1bc40e524fe2bbe93834d25ecd0f2023-11-26T13:36:45ZengBMCBMC Cancer1471-24072023-11-0123112010.1186/s12885-023-11631-6Lactate receptor GPR81 drives breast cancer growth and invasiveness through regulation of ECM properties and Notch ligand DLL4Kathrine Lundø0Oksana Dmytriyeva1Louise Spøhr2Eliana Goncalves-Alves3Jiayi Yao4Laia P. Blasco5Mette Trauelsen6Muthulakshmi Ponniah7Marc Severin8Albin Sandelin9Marie Kveiborg10Thue W. Schwartz11Stine F. Pedersen12Faculty of Health, Novo Nordisk Foundation Center for Basic Metabolic Research, University of CopenhagenFaculty of Health, Novo Nordisk Foundation Center for Basic Metabolic Research, University of CopenhagenSection for Cell Biology and Physiology, Department of Biology, Faculty of Science, University of CopenhagenSection for Cell Biology and Physiology, Department of Biology, Faculty of Science, University of CopenhagenThe Bioinformatics Centre, Department of Biology, Faculty of Science, University of CopenhagenBiotech Research and Innovation Centre, Faculty of Health, University of CopenhagenFaculty of Health, Novo Nordisk Foundation Center for Basic Metabolic Research, University of CopenhagenSection for Cell Biology and Physiology, Department of Biology, Faculty of Science, University of CopenhagenSection for Cell Biology and Physiology, Department of Biology, Faculty of Science, University of CopenhagenThe Bioinformatics Centre, Department of Biology, Faculty of Science, University of CopenhagenBiotech Research and Innovation Centre, Faculty of Health, University of CopenhagenFaculty of Health, Novo Nordisk Foundation Center for Basic Metabolic Research, University of CopenhagenSection for Cell Biology and Physiology, Department of Biology, Faculty of Science, University of CopenhagenAbstract Background The lactate receptor GPR81 contributes to cancer development through unclear mechanisms. Here, we investigate the roles of GPR81 in three-dimensional (3D) and in vivo growth of breast cancer cells and study the molecular mechanisms involved. Methods GPR81 was stably knocked down (KD) in MCF-7 human breast cancer cells which were subjected to RNA-seq analysis, 3D growth, in situ- and immunofluorescence analyses, and cell viability- and motility assays, combined with KD of key GPR81-regulated genes. Key findings were additionally studied in other breast cancer cell lines and in mammary epithelial cells. Results GPR81 was upregulated in multiple human cancer types and further upregulated by extracellular lactate and 3D growth in breast cancer spheroids. GPR81 KD increased spheroid necrosis, reduced invasion and in vivo tumor growth, and altered expression of genes related to GO/KEGG terms extracellular matrix, cell adhesion, and Notch signaling. Single cell in situ analysis of MCF-7 cells revealed that several GPR81-regulated genes were upregulated in the same cell clusters. Notch signaling, particularly the Notch ligand Delta-like-4 (DLL4), was strikingly downregulated upon GPR81 KD, and DLL4 KD elicited spheroid necrosis and inhibited invasion in a manner similar to GPR81 KD. Conclusions GPR81 supports breast cancer aggressiveness, and in MCF-7 cells, this occurs at least in part via DLL4. Our findings reveal a new GPR81-driven mechanism in breast cancer and substantiate GPR81 as a promising treatment target.https://doi.org/10.1186/s12885-023-11631-6HCAR1Tumor microenvironmentSpheroidEPHA7PCDH7Notch
spellingShingle Kathrine Lundø
Oksana Dmytriyeva
Louise Spøhr
Eliana Goncalves-Alves
Jiayi Yao
Laia P. Blasco
Mette Trauelsen
Muthulakshmi Ponniah
Marc Severin
Albin Sandelin
Marie Kveiborg
Thue W. Schwartz
Stine F. Pedersen
Lactate receptor GPR81 drives breast cancer growth and invasiveness through regulation of ECM properties and Notch ligand DLL4
BMC Cancer
HCAR1
Tumor microenvironment
Spheroid
EPHA7
PCDH7
Notch
title Lactate receptor GPR81 drives breast cancer growth and invasiveness through regulation of ECM properties and Notch ligand DLL4
title_full Lactate receptor GPR81 drives breast cancer growth and invasiveness through regulation of ECM properties and Notch ligand DLL4
title_fullStr Lactate receptor GPR81 drives breast cancer growth and invasiveness through regulation of ECM properties and Notch ligand DLL4
title_full_unstemmed Lactate receptor GPR81 drives breast cancer growth and invasiveness through regulation of ECM properties and Notch ligand DLL4
title_short Lactate receptor GPR81 drives breast cancer growth and invasiveness through regulation of ECM properties and Notch ligand DLL4
title_sort lactate receptor gpr81 drives breast cancer growth and invasiveness through regulation of ecm properties and notch ligand dll4
topic HCAR1
Tumor microenvironment
Spheroid
EPHA7
PCDH7
Notch
url https://doi.org/10.1186/s12885-023-11631-6
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