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Baek A, Baek D, Cho Y, Jo S, Kim J, Hong Y, Cho S, Kim SH, Cho SR. 3'-Sialyllactose alleviates bone loss by regulating bone homeostasis. Commun Biol 2024; 7:110. [PMID: 38243116 PMCID: PMC10798968 DOI: 10.1038/s42003-024-05796-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Accepted: 01/09/2024] [Indexed: 01/21/2024] Open
Abstract
Osteoporosis is a common skeletal disease that results in an increased risk of fractures. However, there is no definitive cure, warranting the development of potential therapeutic agents. 3'-Sialyllactose (3'-SL) in human milk regulates many biological functions. However, its effect on bone metabolism remains unknown. This study aimed to investigate the molecular mechanisms underlying the effect of 3'-SL on bone homeostasis. Treatment of human bone marrow stromal cells (hBMSCs) with 3'-SL enhanced osteogenic differentiation and inhibited adipogenic differentiation of hBMSCs. RNA sequencing showed that 3'-SL enhanced laminin subunit gamma-2 expression and promoted osteogenic differentiation via the phosphatidylinositol 3‑kinase/protein kinase B signaling pathway. Furthermore, 3'-SL inhibited the receptor activator of nuclear factor κB ligand-induced osteoclast differentiation of bone marrow-derived macrophages through the nuclear factor κB and mitogen‑activated protein kinase signaling pathway, ameliorated osteoporosis in ovariectomized mice, and positively regulated bone remodeling. Our findings suggest 3'-SL as a potential drug for osteoporosis.
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Affiliation(s)
- Ahreum Baek
- Department of Rehabilitation Medicine, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
- Department of Rehabilitation Medicine, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Dawoon Baek
- Department of Rehabilitation Medicine, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
- Department of Rehabilitation Medicine, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Yoonhee Cho
- Department of Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Seongmoon Jo
- Department of Rehabilitation Medicine, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, Republic of Korea
- Research Institute of Rehabilitation Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jinyoung Kim
- Department of Rehabilitation Medicine, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, Republic of Korea
- Graduate Program of Biomedical Engineering, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Yoontaik Hong
- AAVATAR Therapeutics, Gyeonggi-do, Republic of Korea
| | - Seunghee Cho
- AAVATAR Therapeutics, Gyeonggi-do, Republic of Korea
| | - Sung Hoon Kim
- Department of Rehabilitation Medicine, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea.
| | - Sung-Rae Cho
- Department of Rehabilitation Medicine, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, Republic of Korea.
- Research Institute of Rehabilitation Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea.
- Graduate Program of Biomedical Engineering, Yonsei University College of Medicine, Seoul, Republic of Korea.
- Rehabilitation Institute of Neuromuscular Disease, Yonsei University College of Medicine, Seoul, Republic of Korea.
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Yang D, Song Y, Lu A, Qin L, Tan D, Zhang Q, He Y, Lu Y. Metabolomics-Based Analysis of the Effects of Different Cultivation Strategies on Metabolites of Dendrobium officinale Kimura et Migo. Metabolites 2023; 13:metabo13030389. [PMID: 36984829 PMCID: PMC10059836 DOI: 10.3390/metabo13030389] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 02/10/2023] [Accepted: 03/02/2023] [Indexed: 03/09/2023] Open
Abstract
Dendrobium officinale Kimura et Migo is a famous plant with a high medicinal value which has been recorded in the Chinese Pharmacopoeia (2020 Edition). The medicinal properties of D. officinale are based on its chemical composition. However, there are no reports on how different cultivation methods affect its chemical composition. In order to reveal this issue, samples of the D. officinale were collected in this study through tree epiphytic cultivation, stone epiphytic cultivation, and greenhouse cultivation. Polysaccharides were determined by phenol sulfuric acid method and secondary metabolites were detected by the UPLC-MS technique. In addition, with regards to metabolomics, we used multivariate analyses including principal component analysis (PCA) and orthogonal partial least squares analysis (OPLS-DA) to screen for differential metabolites which met the conditions of variable importance projection values >1, fold change >4, and p < 0.05. The differential metabolites were taken further for metabolic pathway enrichment analysis, which was based on the Kyoto Encyclopedia of Genes and Genomes (KEGG) database, and validated by antioxidant activity. Comparing the three groups of samples according to the standards of the ChP (2020 edition), the results showed that the polysaccharide content of the samples from stony epiphytic cultivation and greenhouse cultivation was significantly higher than that of the samples from live tree epiphytic cultivation. Metabolomic analysis revealed that there were 185 differential metabolites among the 3 cultivation methods, with 99 of the differential metabolites being highest in the stone epiphytic cultivation. The results of the metabolic pathway enrichment analysis showed that the different cultivation strategies mainly effected four carbohydrate metabolic pathways, five secondary metabolite synthesis pathways, six amino acid metabolic pathways, one nucleotide metabolism pathway, three cofactor and vitamin metabolism pathways, and one translation pathway in genetic information processing. Furthermore, D. officinale from stone epiphytic cultivation which had the best antioxidant activity was implicated in differential metabolite production. This study revealed the effects of different cultivation methods on the chemical composition of D. officinale and also provided a reference for establishing the quality control standards to aid its development and utilization.
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Affiliation(s)
- Da Yang
- Key Lab of the Basic Pharmacology of the Ministry of Education, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi 563009, China
| | - Yeyang Song
- Key Lab of the Basic Pharmacology of the Ministry of Education, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi 563009, China
| | - Anjin Lu
- Guizhou Engineering Research Center of Industrial Key-technology for Dendrobium Nobile, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi 563000, China
| | - Lin Qin
- Guizhou Engineering Research Center of Industrial Key-technology for Dendrobium Nobile, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi 563000, China
| | - Daopeng Tan
- Guizhou Engineering Research Center of Industrial Key-technology for Dendrobium Nobile, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi 563000, China
| | - Qianru Zhang
- Guizhou Engineering Research Center of Industrial Key-technology for Dendrobium Nobile, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi 563000, China
| | - Yuqi He
- Key Lab of the Basic Pharmacology of the Ministry of Education, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi 563009, China
- Guizhou Engineering Research Center of Industrial Key-technology for Dendrobium Nobile, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi 563000, China
- Correspondence: (Y.H.); (Y.L.)
| | - Yanliu Lu
- Key Lab of the Basic Pharmacology of the Ministry of Education, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi 563009, China
- Correspondence: (Y.H.); (Y.L.)
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Okagu IU, Ezeorba TPC, Aguchem RN, Ohanenye IC, Aham EC, Okafor SN, Bollati C, Lammi C. A Review on the Molecular Mechanisms of Action of Natural Products in Preventing Bone Diseases. Int J Mol Sci 2022; 23:ijms23158468. [PMID: 35955603 PMCID: PMC9368769 DOI: 10.3390/ijms23158468] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 07/23/2022] [Accepted: 07/25/2022] [Indexed: 12/10/2022] Open
Abstract
The drugs used for treating bone diseases (BDs), at present, elicit hazardous side effects that include certain types of cancers and strokes, hence the ongoing quest for the discovery of alternatives with little or no side effects. Natural products (NPs), mainly of plant origin, have shown compelling promise in the treatments of BDs, with little or no side effects. However, the paucity in knowledge of the mechanisms behind their activities on bone remodeling has remained a hindrance to NPs’ adoption. This review discusses the pathological development of some BDs, the NP-targeted components, and the actions exerted on bone remodeling signaling pathways (e.g., Receptor Activator of Nuclear Factor κ B-ligand (RANKL)/monocyte/macrophage colony-stimulating factor (M-CSF)/osteoprotegerin (OPG), mitogen-activated protein kinase (MAPK)s/c-Jun N-terminal kinase (JNK)/nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB), Kelch-like ECH-associated protein 1 (Keap-1)/nuclear factor erythroid 2–related factor 2 (Nrf2)/Heme Oxygenase-1 (HO-1), Bone Morphogenetic Protein 2 (BMP2)-Wnt/β-catenin, PhosphatidylInositol 3-Kinase (PI3K)/protein kinase B (Akt)/Glycogen Synthase Kinase 3 Beta (GSK3β), and other signaling pathways). Although majority of the studies on the osteoprotective properties of NPs against BDs were conducted ex vivo and mostly on animals, the use of NPs for treating human BDs and the prospects for future development remain promising.
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Affiliation(s)
- Innocent U. Okagu
- Department of Biochemistry, Faculty of Biological Sciences, University of Nigeria, Nsukka 410001, Nigeria; (I.U.O.); (T.P.C.E.); (R.N.A.); (E.C.A.)
| | - Timothy P. C. Ezeorba
- Department of Biochemistry, Faculty of Biological Sciences, University of Nigeria, Nsukka 410001, Nigeria; (I.U.O.); (T.P.C.E.); (R.N.A.); (E.C.A.)
| | - Rita N. Aguchem
- Department of Biochemistry, Faculty of Biological Sciences, University of Nigeria, Nsukka 410001, Nigeria; (I.U.O.); (T.P.C.E.); (R.N.A.); (E.C.A.)
| | - Ikenna C. Ohanenye
- School of Nutrition Sciences, Faculty of Health Sciences, University of Ottawa, Ottawa, ON K1H 8M5, Canada;
| | - Emmanuel C. Aham
- Department of Biochemistry, Faculty of Biological Sciences, University of Nigeria, Nsukka 410001, Nigeria; (I.U.O.); (T.P.C.E.); (R.N.A.); (E.C.A.)
- Natural Science Unit, School of General Studies, University of Nigeria, Nsukka 410001, Nigeria
- School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Sunday N. Okafor
- Department of Pharmaceutical and Medicinal Chemistry, University of Nigeria, Nsukka 410001, Nigeria;
| | - Carlotta Bollati
- Department of Pharmaceutical Sciences, University of Milan, via Mangiagalli 25, 20133 Milano, Italy;
| | - Carmen Lammi
- Department of Pharmaceutical Sciences, University of Milan, via Mangiagalli 25, 20133 Milano, Italy;
- Correspondence: ; Tel.: +39-02-5031-9372
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Wang S, Xu L, Wu Y, Shen H, Lin Z, Fang Y, Zhang L, Shen B, Liu Y, Wu K. Parathyroid Hormone Promotes Human Umbilical Vein Endothelial Cell Migration and Proliferation Through Orai1-Mediated Calcium Signaling. Front Cardiovasc Med 2022; 9:844671. [PMID: 35369318 PMCID: PMC8965836 DOI: 10.3389/fcvm.2022.844671] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Accepted: 02/15/2022] [Indexed: 11/18/2022] Open
Abstract
Parathyroid hormone is the main endocrine regulator of extracellular calcium and phosphorus levels. Secondary hyperparathyroidism–induced endothelial dysfunction may be related to calcium homeostasis disorders. Here, we investigated the effects of parathyroid hormone on human umbilical vein endothelial cells (HUVECs) and characterized the involvement of store-operated Ca2+ entry (SOCE) and the nuclear factor of activated T cells (NFAT) signaling pathway. We used immunoblot experiments to find that parathyroid hormone significantly enhanced the expression of the Orai1 channel, a type of channel mediating SOCE, SOCE activity, and Orai1-mediated proliferation of HUVECs but did not increase Orai2 and Orai3. RNA-seq was utilized to identify 1,655 differentially expressed genes (823 upregulated and 832 downregulated) in parathyroid hormone–treated HUVECs as well as enhanced focal adhesion signaling and expression levels of two key genes, namely, COL1A1 and NFATC1. Increased protein and mRNA expression levels of COL1A1 and NFATC1 were confirmed by immunoblotting and quantitative RT-PCR, respectively. Cytosol and nuclei fractionation experiments and immunofluorescence methods were used to show that parathyroid hormone treatment increased NFATC1 nuclear translocation, which was inhibited by a calcineurin inhibitor (CsA), a selective calmodulin antagonist (W7), an Orai channel inhibitor (BTP2), or Orai1 small interfering RNA (siRNA) transfection. Parathyroid hormone also increased COL1A1 expression, cell migration, and proliferation of HUVECs. The PTH-induced increase in HUVEC migration and proliferation were inhibited by CsA, W7, BTP2, or COL1A1 siRNA transfection. These findings indicated that PTH increased Orai1 expression and Orai1-mediated SOCE, causing the nuclear translocation of NFATC1 to increase COL1A1 expression and COL1A1-mediated HUVEC migration and proliferation. These results suggest potential key therapeutic targets of Orai1 and the downstream calmodulin/calcineurin/NFATC1/COL1A1 signaling pathway in parathyroid hormone–induced endothelial dysfunction and shed light on underlying mechanisms that may be altered to prevent or treat secondary hyperparathyroidism–associated cardiovascular disease.
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Affiliation(s)
- Shuhao Wang
- Department of Otorhinolaryngology, Head and Neck Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Lijie Xu
- Department of Otorhinolaryngology, Head and Neck Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Yv Wu
- Department of Otorhinolaryngology, Head and Neck Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, China
- Department of Otorhinolaryngology, General Hospital of Anhui Wanbei Coal Power Group, Suzhou, China
| | - Hailong Shen
- Department of Otorhinolaryngology, Head and Neck Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Zhangying Lin
- Department of Otorhinolaryngology, Head and Neck Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Yang Fang
- Department of Physiology, School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - Lesha Zhang
- Department of Physiology, School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - Bing Shen
- Department of Physiology, School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - Yehai Liu
- Department of Otorhinolaryngology, Head and Neck Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, China
- Yehai Liu
| | - Kaile Wu
- Department of Otorhinolaryngology, Head and Neck Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, China
- *Correspondence: Kaile Wu
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Lu YS, Yao GX, Wang XL, Liu JX, Yu J, Qiu J, Li Y, Qian YZ, Xu YY. A comprehensive analysis of metabolomics and transcriptomics reveals new biomarkers and mechanistic insights on DEHP exposures in MCF-7 cells. CHEMOSPHERE 2020; 255:126865. [PMID: 32402870 DOI: 10.1016/j.chemosphere.2020.126865] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 04/06/2020] [Accepted: 04/20/2020] [Indexed: 06/11/2023]
Abstract
Di-(2-ethylhexyl) phthalate (DEHP) is one of the most important environmental pollutants and affects multiple pathways upon human exposure. DEHP could induce MCF-7 cell proliferation at a very low dose; however, the possible linkage between DEHP and the cell proliferation effect is still unclear. Here, we carried out a comprehensive metabolome and transcriptome analysis to depict the possible molecular mechanisms of the effect of DEHP exposure on MCF-7 proliferation. In this paper, MCF-7 cells treated with DEHP at a dose of 1 μM for 48 h were selected for metabolome and transcriptome analysis. Untargeted and targeted metabolomics identified 8 differential metabolites, including amino acids, purine, pyrimidine and nucleotides. The metabolite changes were associated with 9 metabolic pathways. Disorders in riboflavin, histidine, beta-alanine metabolism, and nitrogen metabolism caused by DEHP exposure are important concerns for MCF-7 proliferation. Moreover, a transcriptomics study of the MCF-7 cells found a total of 500 differentially expressed genes (DEGs). KEGG enrichment analyses showed that pathways in cancer had stronger responses. The results of integrated analysis of the interactions between the DEGs and metabolites revealed significant changes in the purine metabolism pathway, which will shed light on the mechanism of MCF-7 cell proliferation after DEHP exposure. Overall, this study depicts the possible contribution of DEHP exposure to MCF-7 cell proliferation and highlights the power of omics platforms to deepen the mechanistic understanding of toxicity caused by endocrine disrupting chemicals.
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Affiliation(s)
- Yu-Shun Lu
- Key Laboratory of Agro-Product Quality and Safety, Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, 100081, China; Faculty of Printing and Packaging and Digital Media, Xi' an University of Technology, Xi'an, 710048, China
| | - Gui-Xiao Yao
- Key Laboratory of Agro-Product Quality and Safety, Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, 100081, China; Faculty of Printing and Packaging and Digital Media, Xi' an University of Technology, Xi'an, 710048, China
| | - Xin-Lu Wang
- Key Laboratory of Agro-Product Quality and Safety, Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Jia-Xi Liu
- Key Laboratory of Agro-Product Quality and Safety, Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, 100081, China; Faculty of Printing and Packaging and Digital Media, Xi' an University of Technology, Xi'an, 710048, China
| | - Jiang Yu
- Faculty of Printing and Packaging and Digital Media, Xi' an University of Technology, Xi'an, 710048, China
| | - Jing Qiu
- Key Laboratory of Agro-Product Quality and Safety, Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, 100081, China; Supervision and Inspection Center for Quality and Safety of Agro-Products, Ministry of Agriculture and Rural Affairs, Beijing, 100081, China
| | - Yun Li
- Key Laboratory of Agro-Product Quality and Safety, Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, 100081, China; Supervision and Inspection Center for Quality and Safety of Agro-Products, Ministry of Agriculture and Rural Affairs, Beijing, 100081, China
| | - Yong-Zhong Qian
- Key Laboratory of Agro-Product Quality and Safety, Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, 100081, China; Supervision and Inspection Center for Quality and Safety of Agro-Products, Ministry of Agriculture and Rural Affairs, Beijing, 100081, China.
| | - Yan-Yang Xu
- Key Laboratory of Agro-Product Quality and Safety, Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, 100081, China; Supervision and Inspection Center for Quality and Safety of Agro-Products, Ministry of Agriculture and Rural Affairs, Beijing, 100081, China.
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The Role of Ca 2+-NFATc1 Signaling and Its Modulation on Osteoclastogenesis. Int J Mol Sci 2020; 21:ijms21103646. [PMID: 32455661 PMCID: PMC7279283 DOI: 10.3390/ijms21103646] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 05/18/2020] [Accepted: 05/19/2020] [Indexed: 12/14/2022] Open
Abstract
The increasing of intracellular calcium concentration is a fundamental process for mediating osteoclastogenesis, which is involved in osteoclastic bone resorption. Cytosolic calcium binds to calmodulin and subsequently activates calcineurin, leading to NFATc1 activation, a master transcription factor required for osteoclast differentiation. Targeting the various activation processes in osteoclastogenesis provides various therapeutic strategies for bone loss. Diverse compounds that modulate calcium signaling have been applied to regulate osteoclast differentiation and, subsequently, attenuate bone loss. Thus, in this review, we summarized the modulation of the NFATc1 pathway through various compounds that regulate calcium signaling and the calcium influx machinery. Furthermore, we addressed the involvement of transient receptor potential channels in osteoclastogenesis.
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Du T, Yan Z, Zhu S, Chen G, Wang L, Ye Z, Wang W, Zhu Q, Lu Z, Cao X. QKI deficiency leads to osteoporosis by promoting RANKL-induced osteoclastogenesis and disrupting bone metabolism. Cell Death Dis 2020; 11:330. [PMID: 32382069 PMCID: PMC7205892 DOI: 10.1038/s41419-020-2548-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 04/21/2020] [Accepted: 04/22/2020] [Indexed: 11/20/2022]
Abstract
Quaking (QKI), an RNA-binding protein, has been reported to exhibit numerous biological functions, such as mRNA regulation, cancer suppression, and anti-inflammation. However, little known about the effects of QKI on bone metabolism. In this study, we used a monocyte/macrophage-specific QKI knockout transgenic mouse model to investigate the effects of QKI deficiency on receptor activator of NF-κB ligand (RANKL)-induced osteoclastogenesis. The loss of QKI promoted the formation of multinucleated tartrate-resistant acid phosphatase (TRAP)-positive osteoclasts (OCs) from bone marrow macrophages, and upregulated the expression of OC-specific markers, including TRAP (Acp5) and cathepsin K (Ctsk). The pro-osteoclastogenesis effect of QKI deficiency was achieved by amplifying the signaling cascades of the NF-κB and mitogen-activated protein kinase (MAPK) pathways; then, signaling upregulated the activation of nuclear factor of activated T cells c1 (NFATc1), which is considered to be the core transcription factor that regulates OC differentiation. In addition, QKI deficiency could inhibit osteoblast (OB) formation through the inflammatory microenvironment. Taken together, our data suggest that QKI deficiency promoted OC differentiation and disrupted bone metabolic balance, and eventually led to osteopenia under physiological conditions and aggravated the degree of osteoporosis under pathological conditions.
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Affiliation(s)
- Tianshu Du
- PLA Institute of Orthopaedics, Xijing Hospital, Fourth Military Medical University, No.17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China
| | - Zhao Yan
- PLA Institute of Orthopaedics, Xijing Hospital, Fourth Military Medical University, No.17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China
| | - Shu Zhu
- PLA Institute of Orthopaedics, Xijing Hospital, Fourth Military Medical University, No.17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China
| | - Guo Chen
- State Key Laboratory of Cancer Biology, Department of Pharmacogenomics, Fourth Military Medical University, No.17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China
| | - Li Wang
- State Key Laboratory of Cancer Biology, Department of Pharmacogenomics, Fourth Military Medical University, No.17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China
| | - Zichen Ye
- State Key Laboratory of Cancer Biology, Department of Pharmacogenomics, Fourth Military Medical University, No.17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China
| | - Wenwen Wang
- State Key Laboratory of Cancer Biology, Department of Pharmacogenomics, Fourth Military Medical University, No.17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China
| | - Qingsheng Zhu
- PLA Institute of Orthopaedics, Xijing Hospital, Fourth Military Medical University, No.17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China.
| | - Zifan Lu
- State Key Laboratory of Cancer Biology, Department of Pharmacogenomics, Fourth Military Medical University, No.17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China.
| | - Xiaorui Cao
- PLA Institute of Orthopaedics, Xijing Hospital, Fourth Military Medical University, No.17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China.
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Characterisation of Two Polyketides from Streptomyces sp. SKH1-2 Isolated from Roots of Musa (ABB) cv. 'Kluai Sao Kratuep Ho'. Int Microbiol 2019; 22:451-459. [PMID: 30941598 DOI: 10.1007/s10123-019-00071-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 02/07/2019] [Accepted: 03/05/2019] [Indexed: 10/27/2022]
Abstract
An endophytic actinomycete strain SKH1-2 isolated from Musa (ABB) cv. 'Kluai Sao Kratuep Ho' collected in Suphan Buri province (14° 54' 22.5″ N/100° 04' 50″ E), Thailand, was identified as Streptomyces pseudovenezuelae based on phenotypic and chemotaxonomic characteristics, and 16S rRNA sequence analyses. A chemical investigation led to the isolation of two polyketide molecules from the n-butanol crude extract of the strain SKH1-2 culture broth. The compounds were purified using various chromatographic techniques and identified using spectroscopic methods compared with earlier published data. Compound 1, chartreusin, is known as an anti-Gram (+) bacterial compound and was active against Bacillus subtilis ATCC 6633, Kocuria rhizophila ATCC 9341 and Staphylococcus aureus ATCC 6538p with MIC values of 3.1, 1.6 and 12.5 μg/mL, respectively. Compound 2, lumichrome, did not show activity against all tested microbes. To our knowledge, this is the first report of chartreusin and lumichrome isolated from S. pseudovenezuelae. Taken together, it could be proved that Thai plant species are valuable reservoirs of interesting endophytic actinomycetes producing several interesting biologically active compounds.
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