Tumor cells-derived exosomal PD-L1 promotes the growth and invasion of lung cancer cells <em>in vitro via</em> mediating macrophages M2 polarization
Lung cancer originating from the bronchial epithelium is the most common lung malignancy. It has been reported that programmed cell death 1 ligand 1 (PD-L1) and tumor-associated macrophages are closely related to the development of lung cancer. However, whether tumor-derived exosomal PD-L1 could me...
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| Format: | Article |
| Language: | English |
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PAGEPress Publications
2023-08-01
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| Series: | European Journal of Histochemistry |
| Subjects: | |
| Online Access: | https://ejh.it/index.php/ejh/article/view/3784 |
| _version_ | 1797766960201596928 |
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| author | Xiangjun Lu Jian Shen Siyuan Huang Dongdong Liu Haitao Wang |
| author_facet | Xiangjun Lu Jian Shen Siyuan Huang Dongdong Liu Haitao Wang |
| author_sort | Xiangjun Lu |
| collection | DOAJ |
| description |
Lung cancer originating from the bronchial epithelium is the most common lung malignancy. It has been reported that programmed cell death 1 ligand 1 (PD-L1) and tumor-associated macrophages are closely related to the development of lung cancer. However, whether tumor-derived exosomal PD-L1 could mediate the regulation of macrophage polarization in lung cancer remains unclear. For this research, the level of PD-L1 in normal tissues and lung cancer tissues was evaluated using RT-qPCR. Next, the apoptosis of lung cancer cells was evaluated using flow cytometry assay. Then, the structure and morphology of vesicles were observed using transmission electron microscopy and nanoparticle tracking analysis. Later on, the internalization of exosomes by macrophage was observed using fluorescence microscopy. Our results showed that the level of PD-L1 was upregulated in tumor tissues and lung cancer cells. Knockdown of PD-L1 notably inhibited the viability, migration and invasion of lung cancer cells. In addition, lung cancer cells-derived exosomal PD-L1 could be absorbed by macrophages. Meanwhile, exosomal PD-L1 was able to promote macrophages M2 polarization. Moreover, macrophages M2 polarization induced by exosomal PD-L1 further remarkably promoted the viability, migration, invasion, and epithelial-mesenchymal transition process of lung cancer cells. Collectively, knockdown of PD-L1 notably inhibited the viability, migration and invasion of lung cancer cells. Tumor cell-derived exosomal PD-L1 could promote the growth of lung cancer cells by mediating macrophages M2 polarization. Thus, inhibiting macrophages M2 polarization might be a promoting therapy for the treatment of lung cancer.
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| first_indexed | 2024-03-12T20:32:49Z |
| format | Article |
| id | doaj.art-fbaee964a5de48cc82bcb9c377686249 |
| institution | Directory Open Access Journal |
| issn | 1121-760X 2038-8306 |
| language | English |
| last_indexed | 2024-03-12T20:32:49Z |
| publishDate | 2023-08-01 |
| publisher | PAGEPress Publications |
| record_format | Article |
| series | European Journal of Histochemistry |
| spelling | doaj.art-fbaee964a5de48cc82bcb9c3776862492023-08-01T19:51:11ZengPAGEPress PublicationsEuropean Journal of Histochemistry1121-760X2038-83062023-08-0167310.4081/ejh.2023.3784Tumor cells-derived exosomal PD-L1 promotes the growth and invasion of lung cancer cells <em>in vitro via</em> mediating macrophages M2 polarizationXiangjun Lu0Jian Shen1Siyuan Huang2Dongdong Liu3Haitao Wang4Department of Radiology, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, ZhejiangDepartment of Thoracic Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, ZhejiangDepartment of Thoracic Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, ZhejiangDepartment of Thoracic Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, ZhejiangDepartment of Thoracic Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang Lung cancer originating from the bronchial epithelium is the most common lung malignancy. It has been reported that programmed cell death 1 ligand 1 (PD-L1) and tumor-associated macrophages are closely related to the development of lung cancer. However, whether tumor-derived exosomal PD-L1 could mediate the regulation of macrophage polarization in lung cancer remains unclear. For this research, the level of PD-L1 in normal tissues and lung cancer tissues was evaluated using RT-qPCR. Next, the apoptosis of lung cancer cells was evaluated using flow cytometry assay. Then, the structure and morphology of vesicles were observed using transmission electron microscopy and nanoparticle tracking analysis. Later on, the internalization of exosomes by macrophage was observed using fluorescence microscopy. Our results showed that the level of PD-L1 was upregulated in tumor tissues and lung cancer cells. Knockdown of PD-L1 notably inhibited the viability, migration and invasion of lung cancer cells. In addition, lung cancer cells-derived exosomal PD-L1 could be absorbed by macrophages. Meanwhile, exosomal PD-L1 was able to promote macrophages M2 polarization. Moreover, macrophages M2 polarization induced by exosomal PD-L1 further remarkably promoted the viability, migration, invasion, and epithelial-mesenchymal transition process of lung cancer cells. Collectively, knockdown of PD-L1 notably inhibited the viability, migration and invasion of lung cancer cells. Tumor cell-derived exosomal PD-L1 could promote the growth of lung cancer cells by mediating macrophages M2 polarization. Thus, inhibiting macrophages M2 polarization might be a promoting therapy for the treatment of lung cancer. https://ejh.it/index.php/ejh/article/view/3784Lung cancerexosomeprogrammed cell death receptor-ligand 1 (PD-L1)tumor-associated macrophagesmacrophages M2 polarization |
| spellingShingle | Xiangjun Lu Jian Shen Siyuan Huang Dongdong Liu Haitao Wang Tumor cells-derived exosomal PD-L1 promotes the growth and invasion of lung cancer cells <em>in vitro via</em> mediating macrophages M2 polarization European Journal of Histochemistry Lung cancer exosome programmed cell death receptor-ligand 1 (PD-L1) tumor-associated macrophages macrophages M2 polarization |
| title | Tumor cells-derived exosomal PD-L1 promotes the growth and invasion of lung cancer cells <em>in vitro via</em> mediating macrophages M2 polarization |
| title_full | Tumor cells-derived exosomal PD-L1 promotes the growth and invasion of lung cancer cells <em>in vitro via</em> mediating macrophages M2 polarization |
| title_fullStr | Tumor cells-derived exosomal PD-L1 promotes the growth and invasion of lung cancer cells <em>in vitro via</em> mediating macrophages M2 polarization |
| title_full_unstemmed | Tumor cells-derived exosomal PD-L1 promotes the growth and invasion of lung cancer cells <em>in vitro via</em> mediating macrophages M2 polarization |
| title_short | Tumor cells-derived exosomal PD-L1 promotes the growth and invasion of lung cancer cells <em>in vitro via</em> mediating macrophages M2 polarization |
| title_sort | tumor cells derived exosomal pd l1 promotes the growth and invasion of lung cancer cells em in vitro via em mediating macrophages m2 polarization |
| topic | Lung cancer exosome programmed cell death receptor-ligand 1 (PD-L1) tumor-associated macrophages macrophages M2 polarization |
| url | https://ejh.it/index.php/ejh/article/view/3784 |
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