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Wang Q, Wang X, Chen Y, Pan J. Dual role of Sfrp4 in bone remodelling during orthodontic tooth movement. Orthod Craniofac Res 2024. [PMID: 39319631 DOI: 10.1111/ocr.12858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2024] [Revised: 08/26/2024] [Accepted: 09/10/2024] [Indexed: 09/26/2024]
Abstract
OBJECTIVES The objective of this study was to determine changes in gene expression by establishing an orthodontic tooth movement (OTM) rat model with appropriate and excessive orthodontic force. MATERIALS AND METHODS Using a closed coil nickel-titanium spring, the OTM was carried out to apply a mesial force of 50 or 100 g to the maxillary first molars. Micro-CT, histological and immunohistochemical staining were used to evaluate the bone formation at the tension site and the bone resorption and bone formation at pressure site. Then RNA sequencing and bioinformatic analysis were performed. RESULTS According to the results of the Mirco-CT scan of OTM rat models, both the 50 g group and the 100 g group showed variable degrees of reduction in alveolar bone density on the tension and pressure sides. The results of histological and immunohistochemical staining demonstrated that the periodontal tissue and osteogenic ability of the 50 g group were restored at the 14 days, while the 100 g group caused severe periodontal tissue damage. The GO and KEGG analysis results, as well as the number of differentially expressed genes (DEGs), varied depending on the loading time and value of appliance, according to the results of the RNA sequencing. And the immunohistochemical staining results showed that Sfrp4 functioned by efficiently influencing both bone formation and bone absorption. CONCLUSIONS Appropriate orthodontic force value could cause appropriate movement of teeth in rats without adverse periodontal damage. Simultaneously, distinct gene expression patterns were observed at various force levels and time intervals.
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Affiliation(s)
- Qing Wang
- Department of Stomatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xuan Wang
- Department of Stomatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yanzheng Chen
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Jinsong Pan
- Department of Stomatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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2
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Jethwa JT. Alternative Medical Therapy. Indian J Orthop 2023; 57:245-259. [PMID: 38107794 PMCID: PMC10721595 DOI: 10.1007/s43465-023-01035-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 10/24/2023] [Indexed: 12/19/2023]
Abstract
Background Complementary/alternative medicine" (CAM) is defined as a diverse range of medical treatments, largely non-allopathic, mostly traditional, and not integrated into the authoritarian healthcare system. Interestingly for some schools, allopathy is alternative/complementary therapy. Osteoporosis is an ever-known disease treated before the era of allopathic medicine. Even though the customary medical system of India is among the most well-known in the world, every continent has its own alternative therapies for various chronic diseases. Purpose This review of the scientific information is to help the readers understand how crucial the conceptual underpinnings of alternative medical therapy systems are to the advancement of conventional allopathic practices. Method Many older and recent articles about alternative medical therapy in the management of osteoporosis published in scientific journals are reviewed. Relevant information from cross-references on methods of evaluating the efficacy of different modalities and their scientific pathways is included. An effort has been made to summarise the treatment of osteoporosis by these systems. Opinions, impressions, and inferences are added while describing various aspects of these modalities. Result The National Library of Medicine has played an active role in publishing studies of the management of osteoporosis by alternative therapies. Many issues of management of osteoporosis still lack reliable treatment. However, good information is now available about choosing alternate medical therapy that has been studied scientifically and has shown promising results. Conclusion Medicinal plants and certain natural treatments can treat osteoporosis and its problems. The use of alternate medical therapy has been proven recently by clinical practice and conventional wisdom. This sharing may help the medical practitioner to understand and judiciously allow complementary therapy while treating osteoporosis.
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Affiliation(s)
- Jawahar Tulsidas Jethwa
- Department of Orthopaedics, Narendra Modi Medical College, Nr. Rambaug, Opp. Fire Station, Maninagar, Ahmedabad, 380 008 India
- Ahmedabad, Gujarat India
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Peng Z, Xu R, You Q. Role of Traditional Chinese Medicine in Bone Regeneration and Osteoporosis. Front Bioeng Biotechnol 2022; 10:911326. [PMID: 35711635 PMCID: PMC9194098 DOI: 10.3389/fbioe.2022.911326] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Accepted: 05/12/2022] [Indexed: 12/21/2022] Open
Abstract
According to World Health Organization (WHO), osteoporosis is a systematic bone disability marked by reduced bone mass and microarchitectural degeneration of osseous cells, which leads to increased bones feebleness and fractures vulnerability. It is a polygenetic, physiological bone deformity that frequently leads to osteoporotic fractures and raises the risk of fractures in minimal trauma. Additionally, the molecular changes that cause osteoporosis are linked to decreased fracture repair and delayed bone regeneration. Bones have the ability to regenerate as part of the healing mechanism after an accident or trauma, including musculoskeletal growth and ongoing remodeling throughout adulthood. The principal treatment approaches for bone loss illnesses, such as osteoporosis, are hormone replacement therapy (HRT) and bisphosphonates. In this review, we searched literature regarding the Traditional Chinese medicines (TCM) in osteoporosis and bone regeneration. The literature results are summarized in this review for osteoporosis and bone regeneration. Traditional Chinese medicines (TCM) have grown in popularity as a result of its success in curing ailments while causing minimal adverse effects. Natural Chinese medicine has already been utilized to cure various types of orthopedic illnesses, notably osteoporosis, bone fractures and rheumatism with great success. TCM is a discipline of conventional remedy that encompasses herbal medication, massage (tui na), acupuncture, food, and exercise (qigong) therapy. It is based on more than 2,500 years of Chinese healthcare profession. This article serves as a comprehensive review summarizing the osteoporosis, bone regeneration and the traditional Chinese medicines used since ancient times for the management of osteoporosis and bone regeneration.
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He X, Liao Y, Liu J, Sun S. Research Progress of Natural Small-Molecule Compounds Related to Tumor Differentiation. Molecules 2022; 27:2128. [PMID: 35408534 PMCID: PMC9000768 DOI: 10.3390/molecules27072128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 03/23/2022] [Accepted: 03/23/2022] [Indexed: 11/25/2022] Open
Abstract
Tumor differentiation is a therapeutic strategy aimed at reactivating the endogenous differentiation program of cancer cells and inducing cancer cells to mature and differentiate into other types of cells. It has been found that a variety of natural small-molecule drugs can induce tumor cell differentiation both in vitro and in vivo. Relevant molecules involved in the differentiation process may be potential therapeutic targets for tumor cells. Compared with synthetic drugs, natural small-molecule antitumor compounds have the characteristics of wide sources, structural diversity and low toxicity. In addition, natural drugs with structural modification and transformation have relatively concentrated targets and enhanced efficacy. Therefore, using natural small-molecule compounds to induce malignant cell differentiation represents a more targeted and potential low-toxicity means of tumor treatment. In this review, we focus on natural small-molecule compounds that induce differentiation of myeloid leukemia cells, osteoblasts and other malignant cells into functional cells by regulating signaling pathways and the expression of specific genes. We provide a reference for the subsequent development of natural small molecules for antitumor applications and promote the development of differentiation therapy.
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Affiliation(s)
- Xiaoli He
- Molecular Biology Research Center, School of Life Sciences, Central South University, Changsha 410078, China; (X.H.); (Y.L.)
- Hunan Province Key Laboratory of Basic and Applied Hematology, School of Life Sciences, Central South University, Changsha 410078, China
| | - Yongkang Liao
- Molecular Biology Research Center, School of Life Sciences, Central South University, Changsha 410078, China; (X.H.); (Y.L.)
- Hunan Province Key Laboratory of Basic and Applied Hematology, School of Life Sciences, Central South University, Changsha 410078, China
| | - Jing Liu
- Molecular Biology Research Center, School of Life Sciences, Central South University, Changsha 410078, China; (X.H.); (Y.L.)
- Hunan Province Key Laboratory of Basic and Applied Hematology, School of Life Sciences, Central South University, Changsha 410078, China
| | - Shuming Sun
- Molecular Biology Research Center, School of Life Sciences, Central South University, Changsha 410078, China; (X.H.); (Y.L.)
- Hunan Province Key Laboratory of Basic and Applied Hematology, School of Life Sciences, Central South University, Changsha 410078, China
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An SY, Lee M, Yoon HK, Abekura F, Kim KS, Kim DH, Kim HJ, Lee K, Kim CH, Lee YC. Regulation of human β-galactoside α2,6-sialyltransferase (hST6Gal I) gene expression during differentiation of human osteoblastic MG-63 cells. Glycoconj J 2020; 37:681-690. [PMID: 33108606 DOI: 10.1007/s10719-020-09959-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 08/27/2020] [Accepted: 10/20/2020] [Indexed: 10/23/2022]
Abstract
In this study, we found that gene expression of the human β-galactoside α2,6-sialyltransferase (hST6Gal I) was specifically increased during differentiation of human MG-63 osteoblastic cells by serum starvation (SS). In parallel, a distinct increase in binding to SNA, the α2,6-sialyl-specific lectin, was observed in serum-starved cells, as demonstrated by FACS analysis. 5'-Rapid amplification of cDNA ends analysis demonstrated that the increase of hST6Gal I transcript by SS is mediated by P1 promoter. To elucidate transcriptional regulation of hST6Gal I in SS-induced MG-63 cells, we functionally characterized the P1 promoter region of the hST6Gal I gene. The 5'-deletion analysis of P1 promoter region revealed that the 189 bp upstream region of transcription start site is critical for transcriptional activity of hST6Gal I gene in SS-induced MG-63 cells. This region contains the predicted binding sites for several transcription factors, including AREB6, FOXP1, SIX3, HNF1, YY2, and MOK2. The mutagenesis analysis for these sites and chromatin immunoprecipitation assay demonstrated that the YY2 binding site at -98 to -77 was essential for the SS-induced hST6Gal I gene expression during differentiation of MG-63 cells.
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Affiliation(s)
- So-Young An
- Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, Busan, 49315, South Korea
| | - Miri Lee
- Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, Busan, 49315, South Korea
| | - Hyun-Kyoung Yoon
- Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, Busan, 49315, South Korea
| | - Fukushi Abekura
- Molecular and Cellular Glycobiology Unit, Department of Biological Sciences, SungKyunKwan University, Kyunggi-Do, 16419, South Korea
| | - Kyoung-Sook Kim
- Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, Busan, 49315, South Korea
| | - Dong-Hyun Kim
- Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, Busan, 49315, South Korea
| | - Hyeon-Jun Kim
- Department of Orthopaedic Surgery, College of Medicine, Dong-A University, Busan, 49201, South Korea
| | - Kichoon Lee
- Functional Genomics Laboratory, Department of Animal Sciences, the Ohio State University, 2029 Fyffe Court, Columbus, OH, 43210, USA
| | - Cheorl-Ho Kim
- Molecular and Cellular Glycobiology Unit, Department of Biological Sciences, SungKyunKwan University, Kyunggi-Do, 16419, South Korea.
| | - Young-Choon Lee
- Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, Busan, 49315, South Korea.
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Kim NT, Lee DS, Chowdhury A, Lee H, Cha BY, Woo JT, Woo ER, Jang JH. Acerogenin C from Acer nikoense exhibits a neuroprotective effect in mouse hippocampal HT22 cell lines through the upregulation of Nrf-2/HO-1 signaling pathways. Mol Med Rep 2017; 16:1537-1543. [DOI: 10.3892/mmr.2017.6682] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 04/28/2017] [Indexed: 11/06/2022] Open
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Synthesis and antibacterial evaluation of macrocyclic diarylheptanoid derivatives. Bioorg Med Chem Lett 2016; 26:4070-6. [PMID: 27406794 DOI: 10.1016/j.bmcl.2016.06.075] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 06/24/2016] [Accepted: 06/25/2016] [Indexed: 11/24/2022]
Abstract
Bacterial infections, caused by Mycobacterium tuberculosis and other problematic bacterial pathogens, continue to pose a significant threat to global public health. As such, new chemotype antibacterial agents are desperately needed to fuel and strengthen the antibacterial drug discovery and development pipeline. As part of our antibacterial research program to develop natural product-inspired new antibacterial agents, here we report synthesis, antibacterial evaluation, and structure-activity relationship studies of an extended chemical library of macrocyclic diarylheptanoids with diverse amine, amide, urea, and sulfonamide functionalities. Results of this study have produced macrocyclic geranylamine and 4-fluorophenethylamine substituted derivatives, exhibiting moderate to good activity against M. tuberculosis and selected Gram-positive bacterial pathogens.
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Bi W, Gao Y, Shen J, He C, Liu H, Peng Y, Zhang C, Xiao P. Traditional uses, phytochemistry, and pharmacology of the genus Acer (maple): A review. JOURNAL OF ETHNOPHARMACOLOGY 2016; 189:31-60. [PMID: 27132717 DOI: 10.1016/j.jep.2016.04.021] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 04/15/2016] [Accepted: 04/16/2016] [Indexed: 05/09/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The genus Acer (Aceraceae), commonly known as maple, comprises approximately 129 species that primarily grow in the northern hemisphere, especially in the temperate regions of East Asia, eastern North America, and Europe. These plants have been traditionally used to treat a wide range of diseases in East Asia and North America. Moreover, clinical studies have shown that medicinal plants belonging to Acer are highly effective in the treatment of rheumatism, bruises, hepatic disorders, eye disease, and pain, and in detoxification. This review provides a systematic and constructive overview of the traditional uses, chemical constituents, and pharmacological activities of plants of the genus Acer. MATERIAL AND METHODS This review is based on a literature study of scientific journals and books from libraries and electronic sources such as SciFinder, ScienceDirect, Springer, PubMed, CNKI, Google Scholar, Baidu Scholar, and Web of Science. The literature in this review related to chemical constituents and pharmacological activities dates from 1922 to the end of October 2015. Furthermore, ethnopharmacological information on this genus was obtained from libraries and herbaria in China and USA. RESULTS In traditional medicine, 40 species, 11 subspecies, and one varieta of the genus Acer are known to exhibit a broad spectrum of biological activities. To date, 331 compounds have been identified from 34 species of the genus Acer, including flavonoids, tannins, phenylpropanoids, diarylheptanoids, terpenoids, benzoic acid derivatives, and several other types of compounds, such as phenylethanoid glycosides and alkaloids. Preliminary pharmacological studies have shown that the extracts and compounds isolated from this genus exhibit a broad spectrum of biological activities such as antioxidant, antitumor, anti-inflammatory, antidiabetic, hepatoprotective, and antiobesity activities, as well as promoting osteoblast differentiation. To date, reports on the toxicity of Acer species to humans are very limited, and the major safety concern of these plants is in the veterinary field. CONCLUSIONS Based on our systematic review, Acer species can be used to treat rheumatism, hepatic disorders, eye disease, pain, etc. effectively. Some indications from ethnomedicine have been validated by pharmacological activities, such as the anti-inflammatory and hepatoprotective activities of the species. The available literature showed that most of the activities of these species can be attributed to flavonoids and tannins. To ensure the safety and efficacy in clinical practice in the future, studies identifying active molecules and clarifying their pharmacological mechanisms as well as toxicity are needed.
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Affiliation(s)
- Wu Bi
- Institute of Medicinal Plant Development, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100193, People's Republic of China; Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing 100193, People's Republic of China
| | - Ying Gao
- Tennessee Center for Botanical Medicine Research and the Department of Biology, Middle Tennessee State University, Murfreesboro, TN 37132, USA
| | - Jie Shen
- Institute of Medicinal Plant Development, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100193, People's Republic of China; Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing 100193, People's Republic of China
| | - Chunnian He
- Institute of Medicinal Plant Development, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100193, People's Republic of China; Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing 100193, People's Republic of China.
| | - Haibo Liu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100193, People's Republic of China; Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing 100193, People's Republic of China
| | - Yong Peng
- Institute of Medicinal Plant Development, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100193, People's Republic of China; Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing 100193, People's Republic of China
| | - Chunhong Zhang
- Baotou Medical College, Baotou 014060, People's Republic of China
| | - Peigen Xiao
- Institute of Medicinal Plant Development, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100193, People's Republic of China; Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing 100193, People's Republic of China.
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An J, Yang H, Zhang Q, Liu C, Zhao J, Zhang L, Chen B. Natural products for treatment of osteoporosis: The effects and mechanisms on promoting osteoblast-mediated bone formation. Life Sci 2016; 147:46-58. [DOI: 10.1016/j.lfs.2016.01.024] [Citation(s) in RCA: 209] [Impact Index Per Article: 26.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 01/04/2016] [Accepted: 01/13/2016] [Indexed: 01/03/2023]
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Morceau F, Chateauvieux S, Orsini M, Trécul A, Dicato M, Diederich M. Natural compounds and pharmaceuticals reprogram leukemia cell differentiation pathways. Biotechnol Adv 2015; 33:785-97. [PMID: 25886879 DOI: 10.1016/j.biotechadv.2015.03.013] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Revised: 03/18/2015] [Accepted: 03/29/2015] [Indexed: 12/22/2022]
Abstract
In addition to apoptosis resistance and cell proliferation capacities, the undifferentiated state also characterizes most cancer cells, especially leukemia cells. Cell differentiation is a multifaceted process that depends on complex regulatory networks that involve transcriptional, post-transcriptional and epigenetic regulation of gene expression. The time- and spatially-dependent expression of lineage-specific genes and genes that control cell growth and cell death is implicated in the process of maturation. The induction of cancer cell differentiation is considered an alternative approach to elicit cell death and proliferation arrest. Differentiation therapy has mainly been developed to treat acute myeloid leukemia, notably with all-trans retinoic acid (ATRA). Numerous molecules from diverse natural or synthetic origins are effective alone or in association with ATRA in both in vitro and in vivo experiments. During the last two decades, pharmaceuticals and natural compounds with various chemical structures, including alkaloids, flavonoids and polyphenols, were identified as potential differentiating agents of hematopoietic pathways and osteogenesis.
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Affiliation(s)
- Franck Morceau
- Laboratoire de Biologie Moléculaire et Cellulaire du Cancer, Hôpital Kirchberg, 9, rue Edward Steichen, L-2540 Luxembourg, Luxembourg
| | - Sébastien Chateauvieux
- Laboratoire de Biologie Moléculaire et Cellulaire du Cancer, Hôpital Kirchberg, 9, rue Edward Steichen, L-2540 Luxembourg, Luxembourg
| | - Marion Orsini
- Laboratoire de Biologie Moléculaire et Cellulaire du Cancer, Hôpital Kirchberg, 9, rue Edward Steichen, L-2540 Luxembourg, Luxembourg
| | - Anne Trécul
- Laboratoire de Biologie Moléculaire et Cellulaire du Cancer, Hôpital Kirchberg, 9, rue Edward Steichen, L-2540 Luxembourg, Luxembourg
| | - Mario Dicato
- Laboratoire de Biologie Moléculaire et Cellulaire du Cancer, Hôpital Kirchberg, 9, rue Edward Steichen, L-2540 Luxembourg, Luxembourg
| | - Marc Diederich
- College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea.
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Wang CY, Yang SF, Wang Z, Tan JM, Xing SM, Chen DC, Xu SM, Yuan W. PCAF acetylates Runx2 and promotes osteoblast differentiation. J Bone Miner Metab 2013; 31:381-9. [PMID: 23468178 DOI: 10.1007/s00774-013-0428-y] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2012] [Accepted: 01/17/2013] [Indexed: 10/27/2022]
Abstract
Osteoblasts play a crucial role in bone formation. However, the molecular mechanisms involved in osteoblast differentiation remain largely unclear. Runt-related gene 2 (Runx2) is a master transcriptional factor for osteoblast differentiation. Here we reported that p300/CBP-associated factor (PCAF) directly binds to Runx2 and acetylates Runx2, leading to an increase in its transcriptional activity. Upregulation of PCAF in MC3T3-E1 cells increases the expression of osteogenic marker genes including alkaline phosphatase (ALP), osteocalcin (Ocn), and Osteopontin (Opn), and ALP activity was stimulated as well. Consequently, the mineralization of MC3T3-E1 cells was remarkably improved by PCAF. In contrast, PCAF knockdown decreases the mRNA levels of ALP, Ocn, and Opn. ALP activity and the mineralized area were attenuated under PCAF knockdown conditions. These results indicate that PCAF is an important regulator for promoting osteoblast differentiation via acetylation modification of Runx2.
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Affiliation(s)
- Chao-Yang Wang
- Department of Orthopaedics, 98 Hospital of PLA, Zhejiang, 313000, Huzhou, China.
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Shen L, Maddox MM, Adhikari S, Bruhn DF, Kumar M, Lee RE, Hurdle JG, Lee RE, Sun D. Syntheses and evaluation of macrocyclic engelhardione analogs as antitubercular and antibacterial agents. J Antibiot (Tokyo) 2013; 66:319-25. [PMID: 23549356 DOI: 10.1038/ja.2013.21] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The natural product engelhardione is an underexplored chemotype for developing novel treatments for bacterial infections; we therefore explored this natural product scaffold for chemical diversification and structure-activity relationship studies. Macrocyclic engelhardione and structural regioisomers were synthesized using a series of aldol condensations and selective hydrogenations to generate the 1,7-diarylheptan-3-one derivatives, followed by microwave-assisted intramolecular Ullmann coupling to afford a series of macrocyclic diaryl ether analogs. An extended macrocyclic chemical library was then produced by oxime formation, reductive amination and O-alkylation. Antibacterial evaluation revealed that the reductive amination derivatives 7b and 7d showed moderate activities (minimum inhibitory concentrations: 12.5-25 μg ml(-1)) against Mycobacterium tuberculosis and Gram-positive pathogens, as well as anti-Gram-negative activity against an efflux impaired Escherichia coli strain. These results provide validated leads for further optimization and development.
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Affiliation(s)
- Li Shen
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Hawai'i at Hilo, Hilo, HI, USA
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Yonezawa T, Lee JW, Akazawa H, Inagaki M, Cha BY, Nagai K, Yagasaki K, Akihisa T, Woo JT. Osteogenic activity of diphenyl ether-type cyclic diarylheptanoids derived from Acer nikoense. Bioorg Med Chem Lett 2011; 21:3248-51. [DOI: 10.1016/j.bmcl.2011.04.041] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2011] [Revised: 04/05/2011] [Accepted: 04/11/2011] [Indexed: 10/18/2022]
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