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Extracellular Vesicles Derived from SIPA1(high) Breast Cancer Cells Enhance Macrophage Infiltration and Cancer Metastasis through Myosin-9

SIMPLE SUMMARY: The high expression of signal-induced proliferation-associated 1 (SIPA1) in breast cancer could aggravate cancer cell metastasis, but how the tumour microenvironment is involved in this incident is unknown. In this study, we investigated whether breast cancer cells with high SIPA1 ex...

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Autores principales: Feng, Lingyun, Weng, Jun, Yao, Chenguang, Wang, Ruyuan, Wang, Ning, Zhang, Yilei, Tanaka, Yoshimasa, Su, Li
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9032110/
https://www.ncbi.nlm.nih.gov/pubmed/35453742
http://dx.doi.org/10.3390/biology11040543
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author Feng, Lingyun
Weng, Jun
Yao, Chenguang
Wang, Ruyuan
Wang, Ning
Zhang, Yilei
Tanaka, Yoshimasa
Su, Li
author_facet Feng, Lingyun
Weng, Jun
Yao, Chenguang
Wang, Ruyuan
Wang, Ning
Zhang, Yilei
Tanaka, Yoshimasa
Su, Li
author_sort Feng, Lingyun
collection PubMed
description SIMPLE SUMMARY: The high expression of signal-induced proliferation-associated 1 (SIPA1) in breast cancer could aggravate cancer cell metastasis, but how the tumour microenvironment is involved in this incident is unknown. In this study, we investigated whether breast cancer cells with high SIPA1 expression recruited macrophages into the tumour microenvironment. We also found that extracellular vesicles (EVs) derived from MDA-MB-231 cells significantly enhanced macrophage migration, compared with that from SIPA1-knockdown MDA-MB-231 cells both in vitro and in vivo. In terms of the mechanism, SIPA1 in cancer cells modulated the key protein myosin-9 in EVs and promoted macrophage infiltration via EVs. We confirmed that either down-regulating SIPA1 expression or blocking myosin-9 by its inhibitor, blebbistatin, led to the suppression of macrophage infiltration. These findings contribute to a deep understanding of how SIPA1 regulates the tumour microenvironment in breast cancer to facilitate tumour metastasis and provide a basis for the development of therapeutics against breast cancer metastasis. ABSTRACT: Tumour cell metastasis can be genetically regulated by proteins contained in cancer cell-derived extracellular vesicles (EVs) released to the tumour microenvironment. Here, we found that the number of infiltrated macrophages was positively correlated with the expression of signal-induced proliferation-associated 1 (SIPA1) in invasive breast ductal carcinoma tissues and MDA-MB-231 xenograft tumours. EVs derived from MDA-MB-231 cells (231-EVs) significantly enhanced macrophage migration, compared with that from SIPA1-knockdown MDA-MB-231 cells (231/si-EVs) both in vitro and in vivo. We revealed that SIPA1 promoted the transcription of MYH9, which encodes myosin-9, and up-regulated the expression level of myosin-9 in breast cancer cells and their EVs. We also found that blocking myosin-9 by either down-regulating SIPA1 expression or blebbistatin treatment led to the suppression of macrophage infiltration. Survival analysis showed that breast cancer patients with high expression of SIPA1 and MYH9 molecules had worse relapse-free survival (p = 0.028). In summary, SIPA1(high) breast cancer can enhance macrophage infiltration through EVs enriched with myosin-9, which might aggravate the malignancy of breast cancer.
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spelling pubmed-90321102022-04-23 Extracellular Vesicles Derived from SIPA1(high) Breast Cancer Cells Enhance Macrophage Infiltration and Cancer Metastasis through Myosin-9 Feng, Lingyun Weng, Jun Yao, Chenguang Wang, Ruyuan Wang, Ning Zhang, Yilei Tanaka, Yoshimasa Su, Li Biology (Basel) Article SIMPLE SUMMARY: The high expression of signal-induced proliferation-associated 1 (SIPA1) in breast cancer could aggravate cancer cell metastasis, but how the tumour microenvironment is involved in this incident is unknown. In this study, we investigated whether breast cancer cells with high SIPA1 expression recruited macrophages into the tumour microenvironment. We also found that extracellular vesicles (EVs) derived from MDA-MB-231 cells significantly enhanced macrophage migration, compared with that from SIPA1-knockdown MDA-MB-231 cells both in vitro and in vivo. In terms of the mechanism, SIPA1 in cancer cells modulated the key protein myosin-9 in EVs and promoted macrophage infiltration via EVs. We confirmed that either down-regulating SIPA1 expression or blocking myosin-9 by its inhibitor, blebbistatin, led to the suppression of macrophage infiltration. These findings contribute to a deep understanding of how SIPA1 regulates the tumour microenvironment in breast cancer to facilitate tumour metastasis and provide a basis for the development of therapeutics against breast cancer metastasis. ABSTRACT: Tumour cell metastasis can be genetically regulated by proteins contained in cancer cell-derived extracellular vesicles (EVs) released to the tumour microenvironment. Here, we found that the number of infiltrated macrophages was positively correlated with the expression of signal-induced proliferation-associated 1 (SIPA1) in invasive breast ductal carcinoma tissues and MDA-MB-231 xenograft tumours. EVs derived from MDA-MB-231 cells (231-EVs) significantly enhanced macrophage migration, compared with that from SIPA1-knockdown MDA-MB-231 cells (231/si-EVs) both in vitro and in vivo. We revealed that SIPA1 promoted the transcription of MYH9, which encodes myosin-9, and up-regulated the expression level of myosin-9 in breast cancer cells and their EVs. We also found that blocking myosin-9 by either down-regulating SIPA1 expression or blebbistatin treatment led to the suppression of macrophage infiltration. Survival analysis showed that breast cancer patients with high expression of SIPA1 and MYH9 molecules had worse relapse-free survival (p = 0.028). In summary, SIPA1(high) breast cancer can enhance macrophage infiltration through EVs enriched with myosin-9, which might aggravate the malignancy of breast cancer. MDPI 2022-03-31 /pmc/articles/PMC9032110/ /pubmed/35453742 http://dx.doi.org/10.3390/biology11040543 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Feng, Lingyun
Weng, Jun
Yao, Chenguang
Wang, Ruyuan
Wang, Ning
Zhang, Yilei
Tanaka, Yoshimasa
Su, Li
Extracellular Vesicles Derived from SIPA1(high) Breast Cancer Cells Enhance Macrophage Infiltration and Cancer Metastasis through Myosin-9
title Extracellular Vesicles Derived from SIPA1(high) Breast Cancer Cells Enhance Macrophage Infiltration and Cancer Metastasis through Myosin-9
title_full Extracellular Vesicles Derived from SIPA1(high) Breast Cancer Cells Enhance Macrophage Infiltration and Cancer Metastasis through Myosin-9
title_fullStr Extracellular Vesicles Derived from SIPA1(high) Breast Cancer Cells Enhance Macrophage Infiltration and Cancer Metastasis through Myosin-9
title_full_unstemmed Extracellular Vesicles Derived from SIPA1(high) Breast Cancer Cells Enhance Macrophage Infiltration and Cancer Metastasis through Myosin-9
title_short Extracellular Vesicles Derived from SIPA1(high) Breast Cancer Cells Enhance Macrophage Infiltration and Cancer Metastasis through Myosin-9
title_sort extracellular vesicles derived from sipa1(high) breast cancer cells enhance macrophage infiltration and cancer metastasis through myosin-9
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9032110/
https://www.ncbi.nlm.nih.gov/pubmed/35453742
http://dx.doi.org/10.3390/biology11040543
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