Diverse modulatory effects of bibenzyls from Dendrobium species on human immune cell responses under inflammatory conditions.
Dendrobium plants are widely used in traditional Chinese medicine. Their secondary metabolites such as bibenzyls and phenanthrenes show various pharmacological benefits such as immunomodulation and inhibitory effects on cancer cell growth. However, our previous study also showed that some of these p...
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| Language: | English |
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Public Library of Science (PLoS)
2024-01-01
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| Series: | PLoS ONE |
| Online Access: | https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0292366&type=printable |
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| author | Virunh Kongkatitham Adeline Dehlinger Chatchai Chaotham Kittisak Likhitwitayawuid Chotima Böttcher Boonchoo Sritularak |
| author_facet | Virunh Kongkatitham Adeline Dehlinger Chatchai Chaotham Kittisak Likhitwitayawuid Chotima Böttcher Boonchoo Sritularak |
| author_sort | Virunh Kongkatitham |
| collection | DOAJ |
| description | Dendrobium plants are widely used in traditional Chinese medicine. Their secondary metabolites such as bibenzyls and phenanthrenes show various pharmacological benefits such as immunomodulation and inhibitory effects on cancer cell growth. However, our previous study also showed that some of these promising compounds (i.e., gigantol and cypripedin) also induced the expression of inflammatory cytokines including TNF in human monocytes, and thus raising concerns about the use of these compounds in clinical application. Furthermore, the effects of these compounds on other immune cell populations, apart from monocytes, remain to be investigated. In this study, we evaluated immunomodulatory effects of seven known bibenzyl compounds purified from Dendrobium species in human peripheral blood mononuclear cells (PBMCs) that were stimulated with lipopolysaccharide (LPS). Firstly, using flow cytometry, moscatilin (3) and crepidatin (4) showed the most promising dose-dependent immunomodulatory effects among all seven bibenzyls, determined by significant reduction of TNF expression in LPS-stimulated CD14+ monocytes. Only crepidatin at the concentration of 20 μM showed a significant cytotoxicity, i.e., an increased cell death in late apoptotic state. In addition, deep immune profiling using high-dimensional single-cell mass cytometry (CyTOF) revealed broad effects of Dendrobium compounds on diverse immune cell types. Our findings suggest that to precisely evaluate therapeutic as well as adverse effects of active natural compounds, a multi-parameter immune profiling targeting diverse immune cell population is required. |
| first_indexed | 2024-03-08T05:13:20Z |
| format | Article |
| id | doaj.art-9513e5f843f14aecb0781939b4509c2c |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-03-08T05:13:20Z |
| publishDate | 2024-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-9513e5f843f14aecb0781939b4509c2c2024-02-07T05:31:18ZengPublic Library of Science (PLoS)PLoS ONE1932-62032024-01-01192e029236610.1371/journal.pone.0292366Diverse modulatory effects of bibenzyls from Dendrobium species on human immune cell responses under inflammatory conditions.Virunh KongkatithamAdeline DehlingerChatchai ChaothamKittisak LikhitwitayawuidChotima BöttcherBoonchoo SritularakDendrobium plants are widely used in traditional Chinese medicine. Their secondary metabolites such as bibenzyls and phenanthrenes show various pharmacological benefits such as immunomodulation and inhibitory effects on cancer cell growth. However, our previous study also showed that some of these promising compounds (i.e., gigantol and cypripedin) also induced the expression of inflammatory cytokines including TNF in human monocytes, and thus raising concerns about the use of these compounds in clinical application. Furthermore, the effects of these compounds on other immune cell populations, apart from monocytes, remain to be investigated. In this study, we evaluated immunomodulatory effects of seven known bibenzyl compounds purified from Dendrobium species in human peripheral blood mononuclear cells (PBMCs) that were stimulated with lipopolysaccharide (LPS). Firstly, using flow cytometry, moscatilin (3) and crepidatin (4) showed the most promising dose-dependent immunomodulatory effects among all seven bibenzyls, determined by significant reduction of TNF expression in LPS-stimulated CD14+ monocytes. Only crepidatin at the concentration of 20 μM showed a significant cytotoxicity, i.e., an increased cell death in late apoptotic state. In addition, deep immune profiling using high-dimensional single-cell mass cytometry (CyTOF) revealed broad effects of Dendrobium compounds on diverse immune cell types. Our findings suggest that to precisely evaluate therapeutic as well as adverse effects of active natural compounds, a multi-parameter immune profiling targeting diverse immune cell population is required.https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0292366&type=printable |
| spellingShingle | Virunh Kongkatitham Adeline Dehlinger Chatchai Chaotham Kittisak Likhitwitayawuid Chotima Böttcher Boonchoo Sritularak Diverse modulatory effects of bibenzyls from Dendrobium species on human immune cell responses under inflammatory conditions. PLoS ONE |
| title | Diverse modulatory effects of bibenzyls from Dendrobium species on human immune cell responses under inflammatory conditions. |
| title_full | Diverse modulatory effects of bibenzyls from Dendrobium species on human immune cell responses under inflammatory conditions. |
| title_fullStr | Diverse modulatory effects of bibenzyls from Dendrobium species on human immune cell responses under inflammatory conditions. |
| title_full_unstemmed | Diverse modulatory effects of bibenzyls from Dendrobium species on human immune cell responses under inflammatory conditions. |
| title_short | Diverse modulatory effects of bibenzyls from Dendrobium species on human immune cell responses under inflammatory conditions. |
| title_sort | diverse modulatory effects of bibenzyls from dendrobium species on human immune cell responses under inflammatory conditions |
| url | https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0292366&type=printable |
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