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Sangsuwan W, Faikhruea K, Supabowornsathit K, Sangsopon D, Ingrungruanglert P, Chuntakaruk H, Nuntavanotayan N, Nakprasit K, Israsena N, Rungrotmongkol T, Chuawong P, Vilaivan T, Aonbangkhen C. Design, Synthesis, and Characterization of Novel Styryl Dyes as Fluorescent Probes for Tau Aggregate Detection in Vitro and in Cells. Chem Asian J 2024:e202301081. [PMID: 38377056 DOI: 10.1002/asia.202301081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 02/14/2024] [Accepted: 02/19/2024] [Indexed: 02/22/2024]
Abstract
A series of novel styryl dye derivatives incorporating indolium and quinolinium core structures were successfully synthesized to explore their interacting and binding capabilities with tau aggregates in vitro and in cells. The synthesized dyes exhibited enhanced fluorescence emission in viscous environments due to the rotatable bond confinement in the core structure. Dye 4, containing a quinolinium moeity and featuring two cationic sites, demonstrated a 28-fold increase in fluorescence emission upon binding to tau aggregates. This dye could also stain tau aggregates in living cells, confirmed by cell imaging using confocal fluorescence microscopy. A molecular docking study was conducted to provide additional visualization and support for binding interactions. This work offers novel and non-cytotoxic fluorescent probes with desirable photophysical properties, which could potentially be used for studying tau aggregates in living cells, prompting further development of new fluorescent probes for early Alzheimer's disease detection.
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Affiliation(s)
- Withsakorn Sangsuwan
- Center of Excellence in Natural Products Chemistry (CENP), Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
- Department of Chemistry and, Center of Excellence for Innovation in Chemistry, Faculty of Science, Special Research Unit for Advanced Magnetic Resonance (AMR), Kasetsart University, Bangkok, 10900, Thailand
| | - Kriangsak Faikhruea
- Organic Synthesis Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Kotchakorn Supabowornsathit
- Organic Synthesis Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Don Sangsopon
- Center of Excellence in Natural Products Chemistry (CENP), Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Praewphan Ingrungruanglert
- Stem Cell and Cell Therapy Research Unit and Department of Pharmacology, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Hathaichanok Chuntakaruk
- Program in Bioinformatics and Computational Biology, Graduate School, Chulalongkorn University, Bangkok, 10330, Thailand
- Center of Excellence in Structural and Computational Biology, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Napatsaporn Nuntavanotayan
- Department of Chemistry and, Center of Excellence for Innovation in Chemistry, Faculty of Science, Special Research Unit for Advanced Magnetic Resonance (AMR), Kasetsart University, Bangkok, 10900, Thailand
| | - Kittiporn Nakprasit
- Center of Excellence in Natural Products Chemistry (CENP), Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Nipan Israsena
- Stem Cell and Cell Therapy Research Unit and Department of Pharmacology, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Thanyada Rungrotmongkol
- Program in Bioinformatics and Computational Biology, Graduate School, Chulalongkorn University, Bangkok, 10330, Thailand
- Center of Excellence in Structural and Computational Biology, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Pitak Chuawong
- Department of Chemistry and, Center of Excellence for Innovation in Chemistry, Faculty of Science, Special Research Unit for Advanced Magnetic Resonance (AMR), Kasetsart University, Bangkok, 10900, Thailand
| | - Tirayut Vilaivan
- Organic Synthesis Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Chanat Aonbangkhen
- Center of Excellence in Natural Products Chemistry (CENP), Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
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Piansaddhayanon C, Koracharkornradt C, Laosaengpha N, Tao Q, Ingrungruanglert P, Israsena N, Chuangsuwanich E, Sriswasdi S. Label-free tumor cells classification using deep learning and high-content imaging. Sci Data 2023; 10:570. [PMID: 37634014 PMCID: PMC10460430 DOI: 10.1038/s41597-023-02482-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 08/16/2023] [Indexed: 08/28/2023] Open
Abstract
Many studies have shown that cellular morphology can be used to distinguish spiked-in tumor cells in blood sample background. However, most validation experiments included only homogeneous cell lines and inadequately captured the broad morphological heterogeneity of cancer cells. Furthermore, normal, non-blood cells could be erroneously classified as cancer because their morphology differ from blood cells. Here, we constructed a dataset of microscopic images of organoid-derived cancer and normal cell with diverse morphology and developed a proof-of-concept deep learning model that can distinguish cancer cells from normal cells within an unlabeled microscopy image. In total, more than 75,000 organoid-drived cells from 3 cholangiocarcinoma patients were collected. The model achieved an area under the receiver operating characteristics curve (AUROC) of 0.78 and can generalize to cell images from an unseen patient. These resources serve as a foundation for an automated, robust platform for circulating tumor cell detection.
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Affiliation(s)
- Chawan Piansaddhayanon
- Department of Computer Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
- Center of Excellence in Computational Molecular Biology, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
- Chula Intelligent and Complex Systems, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Chonnuttida Koracharkornradt
- Center of Excellence in Computational Molecular Biology, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Napat Laosaengpha
- Department of Computer Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
- Center of Excellence in Computational Molecular Biology, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Qingyi Tao
- NVIDIA AI Technology Center, Singapore, Singapore
| | - Praewphan Ingrungruanglert
- Center of Excellence for Stem Cell and Cell Therapy, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Nipan Israsena
- Center of Excellence for Stem Cell and Cell Therapy, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand.
- Department of Pharmacology, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand.
| | - Ekapol Chuangsuwanich
- Department of Computer Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand.
- Center of Excellence in Computational Molecular Biology, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand.
| | - Sira Sriswasdi
- Center of Excellence in Computational Molecular Biology, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand.
- Center for Artificial Intelligence in Medicine, Research Affairs, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand.
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Bhukdee D, Nuwongsri P, Israsena N, Sriswasdi S. Improved Delineation of Colorectal Cancer Molecular Subtypes and Functional Profiles with a 62-Gene Panel. Mol Cancer Res 2023; 21:240-252. [PMID: 36490322 DOI: 10.1158/1541-7786.mcr-22-0476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 11/01/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022]
Abstract
Since its establishment in 2015, the transcriptomics-based consensus molecular subtype (CMS) classification has unified our understanding of colorectal cancer. Each of the four CMS exhibited distinctive high-level molecular signatures that correlated well with prognosis and treatment response. Nonetheless, many key aspects of colorectal cancer progression and intra-subtype heterogeneity remain unresolved. This is partly because the bulk transcriptomic data used to define CMS contain substantial interference from non-tumor cells. Here, we propose a concise panel of 62 genes that not only accurately recapitulates all key characteristics of the four original CMS but also identifies three additional subpopulations with unique molecular signatures. Validation on independent cohorts confirms that the new CMS4 intra-subtypes coincide with single-cell-derived intrinsic subtypes and that the panel consists of many immune cell-type markers that can capture the status of tumor microenvironment. Furthermore, a 2D embedding of CMS structure based on the proposed gene panel provides a high-resolution view of the functional pathways and cell-type markers that underlie each CMS intra-subtype and the continuous progression from CMS2 to CMS4 subtypes. Our gene panel and 2D visualization refined the delineation of colorectal cancer subtypes and could aid further discovery of molecular mechanisms in colorectal cancer. IMPLICATIONS : Well-selected gene panel and representation can capture both the continuum of cancer cell states and tumor microenvironment status.
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Affiliation(s)
- Dhup Bhukdee
- Science Division, Mahidol University International College, Nakhon Pathom, Thailand.,Center of Excellence in Computational Molecular Biology, Faculty of Medicine, Chulalongkorn University, Pathum Wan, Bangkok, Thailand
| | - Pattarin Nuwongsri
- Center of Excellence in Computational Molecular Biology, Faculty of Medicine, Chulalongkorn University, Pathum Wan, Bangkok, Thailand.,Center of Excellence in Stem Cell and Cell Therapy, Faculty of Medicine, Chulalongkorn University, Pathum Wan, Bangkok, Thailand
| | - Nipan Israsena
- Center of Excellence in Stem Cell and Cell Therapy, Faculty of Medicine, Chulalongkorn University, Pathum Wan, Bangkok, Thailand.,Department of Pharmacology, Faculty of Medicine, Chulalongkorn University, Pathum Wan, Bangkok, Thailand
| | - Sira Sriswasdi
- Center of Excellence in Computational Molecular Biology, Faculty of Medicine, Chulalongkorn University, Pathum Wan, Bangkok, Thailand.,Center for Artificial Intelligence in Medicine, Research Affairs, Faculty of Medicine, Chulalongkorn University, Pathum Wan, Bangkok, Thailand
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Phuwapraisirisan S, Ingrungruanglert P, Israsena N, Sahakitrungruang C, Malakorn S. 101P Prediction of radiation responses in patients with locally advanced rectal cancer with a patient-derived organoid-based radiosensitivity model. ESMO Open 2023. [DOI: 10.1016/j.esmoop.2023.100959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Suratannon N, Ittiwut C, Dik WA, Ittiwut R, Meesilpavikkai K, Israsena N, Ingrungruanglert P, Dalm VASH, van Daele PLA, Sanpavat A, Chaijitraruch N, Schrijver B, Buranapraditkun S, Porntaveetus T, Swagemakers SMA, IJspeert H, Palaga T, Suphapeetiporn K, van der Spek PJ, Hirankarn N, Chatchatee P, Martin van Hagen P, Shotelersuk V. A germline STAT6 gain-of-function variant is associated with early-onset allergies. J Allergy Clin Immunol 2023; 151:565-571.e9. [PMID: 36216080 DOI: 10.1016/j.jaci.2022.09.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 09/16/2022] [Accepted: 09/27/2022] [Indexed: 11/15/2022]
Abstract
BACKGROUND The signal transducer and activator of transcription 6 (STAT6) signaling pathway plays a central role in allergic inflammation. To date, however, there have been no descriptions of STAT6 gain-of-function variants leading to allergies in humans. OBJECTIVE We report a STAT6 gain-of-function variant associated with early-onset multiorgan allergies in a family with 3 affected members. METHODS Exome sequencing and immunophenotyping of T-helper cell subsets were conducted. The function of the STAT6 protein was analyzed by Western blot, immunofluorescence, electrophoretic mobility shift assays, and luciferase assays. Gastric organoids obtained from the index patient were used to study downstream effector cytokines. RESULTS We identified a heterozygous missense variant (c.1129G>A;p.Glu377Lys) in the DNA binding domain of STAT6 that was de novo in the index patient's father and was inherited by 2 of his 3 children. Severe atopic dermatitis and food allergy were key presentations. Clinical heterogeneity was observed among the affected individuals. Higher levels of peripheral blood TH2 lymphocytes were detected. The mutant STAT6 displayed a strong preference for nuclear localization, increased DNA binding affinity, and spontaneous transcriptional activity. Moreover, gastric organoids showed constitutive activation of STAT6 downstream signaling molecules. CONCLUSIONS A germline STAT6 gain-of-function variant results in spontaneous activation of the STAT6 signaling pathway and is associated with an early-onset and severe allergic phenotype in humans. These observations enhance our knowledge of the molecular mechanisms underlying allergic diseases and will potentially contribute to novel therapeutic interventions.
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Affiliation(s)
- Narissara Suratannon
- Center of Excellence for Allergy and Clinical Immunology, Division of Allergy, Immunology and Rheumatology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand; Department of Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Chupong Ittiwut
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand
| | - Willem A Dik
- Laboratory Medical Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Department of Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Academic Center for Rare Immunological Diseases (Rare Immunological Disease Center), Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Rungnapa Ittiwut
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand
| | - Kornvalee Meesilpavikkai
- Center of Excellence in Immunology and Immune-mediated Diseases, Immunology Unit, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; Department of Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Nipan Israsena
- Center of Excellence for Stem Cell and Cell Therapy, Department of Pharmacology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Praewphan Ingrungruanglert
- Center of Excellence for Stem Cell and Cell Therapy, Department of Pharmacology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Virgil A S H Dalm
- Department of Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Department of Internal Medicine, Division of Clinical Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Academic Center for Rare Immunological Diseases (Rare Immunological Disease Center), Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Paul L A van Daele
- Department of Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Department of Internal Medicine, Division of Clinical Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Academic Center for Rare Immunological Diseases (Rare Immunological Disease Center), Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Anapat Sanpavat
- Department of Pathology, Faculty of Medicine, Thai Pediatric Gastroenterology, Hepatology and Immunology Research Unit, Chulalongkorn University, Bangkok, Thailand
| | - Nataruks Chaijitraruch
- Pediatric Gastroenterology and Hepatology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; Excellence Center for Organ Transplantation, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand
| | - Benjamin Schrijver
- Laboratory Medical Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Department of Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Department of Internal Medicine, Division of Clinical Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Academic Center for Rare Immunological Diseases (Rare Immunological Disease Center), Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Supranee Buranapraditkun
- Cellular Immunology Laboratory Allergy and Clinical Immunology Unit, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Thantrira Porntaveetus
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Sigrid M A Swagemakers
- Department of Pathology and Clinical Bioinformatics, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Academic Center for Rare Immunological Diseases (Rare Immunological Disease Center), Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Erasmus Center for Data Analytics, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Hanna IJspeert
- Laboratory Medical Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Department of Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Academic Center for Rare Immunological Diseases (Rare Immunological Disease Center), Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Tanapat Palaga
- Center of Excellence in Immunology and Immune-mediated Diseases, Immunology Unit, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; Department of Microbiology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Kanya Suphapeetiporn
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand
| | - Peter J van der Spek
- Department of Pathology and Clinical Bioinformatics, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Academic Center for Rare Immunological Diseases (Rare Immunological Disease Center), Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Erasmus Center for Data Analytics, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Nattiya Hirankarn
- Center of Excellence in Immunology and Immune-mediated Diseases, Immunology Unit, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
| | - Pantipa Chatchatee
- Center of Excellence for Allergy and Clinical Immunology, Division of Allergy, Immunology and Rheumatology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand.
| | - P Martin van Hagen
- Center of Excellence for Allergy and Clinical Immunology, Division of Allergy, Immunology and Rheumatology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand; Department of Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Department of Internal Medicine, Division of Clinical Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Academic Center for Rare Immunological Diseases (Rare Immunological Disease Center), Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands.
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand
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Puthdee N, Sriswasdi S, Pisitkun T, Ratanasirintrawoot S, Israsena N, Tangkijvanich P. The LIN28B/TGF-β/TGFBI feedback loop promotes cell migration and tumour initiation potential in cholangiocarcinoma. Cancer Gene Ther 2022; 29:445-455. [PMID: 34548635 PMCID: PMC9113936 DOI: 10.1038/s41417-021-00387-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 07/25/2021] [Accepted: 09/03/2021] [Indexed: 02/02/2023]
Abstract
Cholangiocarcinoma (CCA), a lethal malignancy of the biliary epithelium, is the second most common primary liver cancer. The poor prognosis of CCA is due to the high rate of tumour invasion and distant metastasis. We found that the RNA-binding protein LIN28B, a known regulator of microRNA biogenesis, stem cell maintenance, and oncogenesis, is expressed in a subpopulation of CCA patients. To further investigate the potential role of LIN28B in CCA pathogenesis, we studied the effect of LIN28B overexpression in the cholangiocyte cell line MMNK-1 and cholangiocarcinoma cell lines HuCCT-1 and KKU-214. Here, we show that enhanced LIN28B expression promoted cancer stem cell-like properties in CCA, including enhanced cell migration, epithelial-to-mesenchymal transition (EMT), increased cell proliferation and spheroid formation. Proteomic analysis revealed TGF-β-induced protein (TGFBI) as a novel LIN28B target gene, and further analysis showed upregulation of other components of the TGF-β signalling pathway, including TGF-β receptor type I (TGFBRI) expression and cytokine TGFB-I, II and III secretion. Importantly, the small molecule TGF-β inhibitor SB431542 negated the effects of LIN28B on both cell migration and clonogenic potential. Overexpression of TGFBI alone promoted cholangiocarcinoma cell migration and EMT changes, but not spheroid formation, suggesting that TGFBI partially contributes to LIN28B-mediated aggressive cell behaviour. These observations are consistent with a model in which TGF-β and LIN28B work together to form a positive feedback loop during cholangiocarcinoma metastasis and provide a therapeutic intervention opportunity.
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Affiliation(s)
- Nattapong Puthdee
- Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Sira Sriswasdi
- Department of Research Affairs, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Trairak Pisitkun
- Department of Research Affairs, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | | | - Nipan Israsena
- Center of Excellence for Stem Cell and Cell Therapy, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
- Department of Pharmacology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
| | - Pisit Tangkijvanich
- Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Center of Excellence in Hepatitis and Liver Cancer, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
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7
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Torsahakul C, Israsena N, Khramchantuk S, Ratanavaraporn J, Dhitavat S, Rodprasert W, Nantavisai S, Sawangmake C. Bio-fabrication of stem-cell-incorporated corneal epithelial and stromal equivalents from silk fibroin and gelatin-based biomaterial for canine corneal regeneration. PLoS One 2022; 17:e0263141. [PMID: 35120168 PMCID: PMC8815981 DOI: 10.1371/journal.pone.0263141] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 01/12/2022] [Indexed: 01/15/2023] Open
Abstract
Corneal grafts are the imperative clinical treatment for canine corneal blindness. To serve the growing demand, this study aimed to generate tissue-engineered canine cornea in part of the corneal epithelium and underlying stroma based on canine limbal epithelial stem cells (cLESCs) seeded silk fibroin/gelatin (SF/G) film and canine corneal stromal stem cells (cCSSCs) seeded SF/G scaffold, respectively. Both cell types were successfully isolated by collagenase I. SF/G corneal films and stromal scaffolds served as the prospective substrates for cLESCs and cCSSCs by promoting cell adhesion, cell viability, and cell proliferation. The results revealed the upregulation of tumor protein P63 (P63) and ATP-binding cassette super-family G member 2 (Abcg2) of cLESCs as well as Keratocan (Kera), Lumican (Lum), aldehyde dehydrogenase 3 family member A1 (Aldh3a1) and Aquaporin 1 (Aqp1) of differentiated keratocytes. Moreover, immunohistochemistry illustrated the positive staining of tumor protein P63 (P63), aldehyde dehydrogenase 3 family member A1 (Aldh3a1), lumican (Lum) and collagen I (Col-I), which are considerable for native cornea. This study manifested a feasible platform to construct tissue-engineered canine cornea for functional grafts and positively contributed to the body of knowledge related to canine corneal stem cells.
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Affiliation(s)
- Chutirat Torsahakul
- Graduate program in Veterinary Bioscience, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Veterinary Stem Cell and Bioengineering Research Unit, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Veterinary Stem Cell and Bioengineering Innovation Center (VSCBIC), Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Nipan Israsena
- Stem Cell and Cell Therapy Research Unit, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Department of Pharmacology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Supaporn Khramchantuk
- Excellence Center for Stem Cell and Cell Therapy, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand
| | - Juthamas Ratanavaraporn
- Biomedical Engineering Program, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand
- Biomedical Engineering Research Center, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand
- Biomedical Engineering for Medical and Health Research Unit, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand
| | - Sirakarnt Dhitavat
- Biochemistry Unit, Department of Physiology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Watchareewan Rodprasert
- Veterinary Stem Cell and Bioengineering Research Unit, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Veterinary Stem Cell and Bioengineering Innovation Center (VSCBIC), Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Sirirat Nantavisai
- Veterinary Stem Cell and Bioengineering Research Unit, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Veterinary Stem Cell and Bioengineering Innovation Center (VSCBIC), Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Academic Affairs, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Chenphop Sawangmake
- Veterinary Stem Cell and Bioengineering Research Unit, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Veterinary Stem Cell and Bioengineering Innovation Center (VSCBIC), Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Department of Pharmacology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Center of Excellence for Regenerative Dentistry (CERD), Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
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Pawinwongchai J, Jangprasert P, Nilsri N, Israsena N, Rojnuckarin P. Mutated JAK2 signal transduction in human Induced Pluripotent Stem Cell (iPSC)-derived Megakaryocytes. Platelets 2021; 33:700-708. [PMID: 34749590 DOI: 10.1080/09537104.2021.1981850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Janus kinase 2 (JAK2) gene mutations are the main drivers for polycythemia vera (PV) and essential thrombocythemia (ET). The mechanisms of single altered gene causing two different diseases are unclear. Additionally, novel treatments specifically targeting mutated JAK2 proteins are needed. In this study, the induced pluripotent stem cells (iPSCs) were virally transduced to express wild-type JAK2 (JAK2WT), JAK2p.V617F (JAK2V617F) or JAK2p.N542_E543del (JAK2exon12) under a doxycycline-inducible system. The modified iPSCs which were differentiated into megakaryocytes in the presence vs. absence of doxycycline were compared to ensure that the differences were solely from mutated JAK2 expressions. The JAK2V617-expressing iPSCs yielded significantly higher numbers of megakaryocytes consistent with the ET phenotype, while there was no enhancement by JAK2exon12 expression compatible with the pure erythrocytosis in humans. Capillary Western analyses revealed significantly greater JAK2 phosphorylation in iPSCs carrying JAK2V617F but not in JAK2WT and JAK2exon12 iPSCs. Activation of STAT3, STAT5 and AKT was increased by JAK2V617F, while they were decreased in JAK2exon12 iPSCs. Notably, interferon alpha and/or arsenic trioxide inhibited megakaryocytes proliferation and reduced JAK2, STAT3, STAT5 and AKT phosphorylation in mutant JAK2-expressing iPSCs compared with those without induction. In conclusion, JAK2V617F expression in iPSCs preferentially promoted megakaryocytes with a signaling profile distinctive from JAK2exon12 expression. Treatments with interferon alpha or arsenic trioxide preferentially suppressed the mutated over wild-type JAK2 signaling. This iPSC model is helpful in mechanistic studies and novel therapy screen for myeloproliferative neoplasm.
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Affiliation(s)
| | - Panchalee Jangprasert
- Research Unit in Translational Hematology, Division of Hematology, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Nungruthai Nilsri
- Department of Medical Technology, Faculty of Allied Health Sciences, Naresuan University, Phitsanulok, Thailand
| | - Nipan Israsena
- Stem Cell and Cell Therapy Research Unit, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Ponlapat Rojnuckarin
- Research Unit in Translational Hematology, Division of Hematology, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
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9
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Nilsri N, Jangprasert P, Pawinwongchai J, Israsena N, Rojnuckarin P. Distinct effects of V617F and exon12-mutated JAK2 expressions on erythropoiesis in a human induced pluripotent stem cell (iPSC)-based model. Sci Rep 2021; 11:5255. [PMID: 33664283 PMCID: PMC7933160 DOI: 10.1038/s41598-021-83895-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Accepted: 02/09/2021] [Indexed: 12/15/2022] Open
Abstract
Activating mutations affecting the JAK-STAT signal transduction is the genetic driver of myeloproliferative neoplasms (MPNs) which comprise polycythemia vera (PV), essential thrombocythemia (ET) and myelofibrosis. The JAK2p.V617F mutation can produce both erythrocytosis in PV and thrombocytosis in ET, while JAK2 exon 12 mutations cause only erythrocytosis. We hypothesized that these two mutations activated different intracellular signals. In this study, the induced pluripotent stem cells (iPSCs) were used to model JAK2-mutated MPNs. Normal iPSCs underwent lentiviral transduction to overexpress JAK2p.V617F or JAK2p.N542_E543del (JAK2exon12) under a doxycycline-inducible system. The modified iPSCs were differentiated into erythroid cells. Compared with JAK2V617F-iPSCs, JAK2exon12-iPSCs yielded more total CD71+GlycophorinA+ erythroid cells, displayed more mature morphology and expressed more adult hemoglobin after doxycycline induction. Capillary Western immunoassay revealed significantly higher phospho-STAT1 but lower phospho-STAT3 and lower Phospho-AKT in JAK2exon12-iPSCs compared with those of JAK2V617F-iPSCs in response to erythropoietin. Furthermore, interferon alpha and arsenic trioxide were tested on these modified iPSCs to explore their potentials for MPN therapy. Both agents preferentially inhibited proliferation and promoted apoptosis of the iPSCs expressing mutant JAK2 compared with those without doxycycline induction. In conclusion, the modified iPSC model can be used to investigate the mechanisms and search for new therapy of MPNs.
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Affiliation(s)
- Nungruthai Nilsri
- Doctor of Philosophy Program in Medical Sciences, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Department of Medical Technology, Faculty of Allied Health Sciences, Naresuan University, Phitsanulok, Thailand
| | - Panchalee Jangprasert
- Interdisciplinary Program of Biomedical Sciences, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | | | - Nipan Israsena
- Stem Cell and Cell Therapy Research Unit, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Ponlapat Rojnuckarin
- Research Unit in Translational Hematology, Division of Hematology, Department of Medicine, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Bangkok, 10330, Thailand.
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10
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Sappakhaw K, Jantarug K, Slavoff SA, Israsena N, Uttamapinant C. A Genetic Code Expansion-Derived Molecular Beacon for the Detection of Intracellular Amyloid-β Peptide Generation. Angew Chem Weinheim Bergstr Ger 2021; 133:3980-3985. [PMID: 38504667 PMCID: PMC10946459 DOI: 10.1002/ange.202010703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 09/19/2020] [Indexed: 11/09/2022]
Abstract
Polypeptides generated from proteolytic processing of protein precursors, or proteolytic proteoforms, play an important role in diverse biological functions and diseases. However, their often-small size and intricate post-translational biogenesis preclude the use of simple genetic tagging in their cellular studies. Herein, we develop a labeling strategy for this class of proteoforms, based on residue-specific genetic code expansion labeling with a molecular beacon design. We demonstrate the utility of such a design by creating a molecular beacon reporter to detect amyloid-β peptides, known to be involved in the pathogenesis of Alzheimer's disease, as they are produced from amyloid precursor protein (APP) along the endocytic pathway of living cells.
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Affiliation(s)
- Khomkrit Sappakhaw
- School of Biomolecular Science and Engineering Vidyasirimedhi Institute of Science and Technology (VISTEC) Rayong 21210 Thailand
| | - Krittapas Jantarug
- School of Biomolecular Science and Engineering Vidyasirimedhi Institute of Science and Technology (VISTEC) Rayong 21210 Thailand
| | - Sarah A Slavoff
- Department of Chemistry Yale University New Haven CT 06520 USA
| | - Nipan Israsena
- Stem Cell and Cell Therapy Research Unit and Department of Pharmacology Faculty of Medicine Chulalongkorn University Bangkok 10330 Thailand
| | - Chayasith Uttamapinant
- School of Biomolecular Science and Engineering Vidyasirimedhi Institute of Science and Technology (VISTEC) Rayong 21210 Thailand
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11
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Sappakhaw K, Jantarug K, Slavoff SA, Israsena N, Uttamapinant C. A Genetic Code Expansion-Derived Molecular Beacon for the Detection of Intracellular Amyloid-β Peptide Generation. Angew Chem Int Ed Engl 2021; 60:3934-3939. [PMID: 33063327 PMCID: PMC7898502 DOI: 10.1002/anie.202010703] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 09/19/2020] [Indexed: 12/01/2022]
Abstract
Polypeptides generated from proteolytic processing of protein precursors, or proteolytic proteoforms, play an important role in diverse biological functions and diseases. However, their often-small size and intricate post-translational biogenesis preclude the use of simple genetic tagging in their cellular studies. Herein, we develop a labeling strategy for this class of proteoforms, based on residue-specific genetic code expansion labeling with a molecular beacon design. We demonstrate the utility of such a design by creating a molecular beacon reporter to detect amyloid-β peptides, known to be involved in the pathogenesis of Alzheimer's disease, as they are produced from amyloid precursor protein (APP) along the endocytic pathway of living cells.
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Affiliation(s)
- Khomkrit Sappakhaw
- School of Biomolecular Science and EngineeringVidyasirimedhi Institute of Science and Technology (VISTEC)Rayong21210Thailand
| | - Krittapas Jantarug
- School of Biomolecular Science and EngineeringVidyasirimedhi Institute of Science and Technology (VISTEC)Rayong21210Thailand
| | | | - Nipan Israsena
- Stem Cell and Cell Therapy Research Unit and Department of PharmacologyFaculty of MedicineChulalongkorn UniversityBangkok10330Thailand
| | - Chayasith Uttamapinant
- School of Biomolecular Science and EngineeringVidyasirimedhi Institute of Science and Technology (VISTEC)Rayong21210Thailand
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12
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Abstract
Either the glycoprotein (GP) Ib deficiency or hyper-function in humans can cause macrothrombocytopenia, the molecular mechanisms of which remain unclear. Herein, the investigations for disease pathogenesis were performed in the human induced pluripotent stem cell (hiPSC) model. The hiPSCs carrying a gain-of-function GP1BA p.M255V mutation which was described in platelet-type von Willebrand disease (PT-VWD) were generated using CRISPR/Cas9. The GP1BA-null hiPSCs were previously derived from a Bernard-Soulier syndrome (BSS) patient. After full megakaryocyte differentiation in culture, both hiPSC mutations showed large proplatelet tips under fluorescence microscopy and yielded fewer but larger platelets compared with those of wild-type cells. The Capillary Western analyses revealed the lower ERK1/2 activation and higher MLC2 (Myosin light chain 2) phosphorylation in megakaryocytes with mutated GPIb. Adding a mitogen-activated protein kinase (MAPK) pathway inhibitor to wild-type hiPSCs recapitulated the phenotypes of GPIb mutations and increased MLC2 phosphorylation. Notably, a ROCK inhibitor which could inhibit MLC2 phosphorylation rescued the macrothrombocytopenia phenotypes of both GPIb alterations and wild-type hiPSCs with a MAPK inhibitor. In conclusion, the genetically modified hiPSCs can be used to model disorders of proplatelet formation. Both loss- and gain-of-function GPIb reduced MAPK/ERK activation but enhanced ROCK/MLC2 phosphorylation resulting in dysregulated platelet generation.
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Affiliation(s)
- Jaturawat Pawinwongchai
- Interdisciplinary Program of Biomedical Sciences, Graduate School, Chulalongkorn University, Bangkok, Thailand
| | - Ponthip Mekchay
- Interdisciplinary Program of Biomedical Sciences, Graduate School, Chulalongkorn University, Bangkok, Thailand
| | - Nungruthai Nilsri
- Doctor of Philosophy Program in Medical Sciences, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Department of Medical Technology, Faculty of Allied Health Sciences, Naresuan University, Phitsanulok, Thailand
| | - Nipan Israsena
- Stem Cell and Cell Therapy Research Unit, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Ponlapat Rojnuckarin
- Division of Hematology, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
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13
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Mekchay P, Ingrungruanglert P, Suphapeetiporn K, Sosothikul D, Ji-au W, Maneesri Le Grand S, Israsena N, Rojnuckarin P. Study of Bernard–Soulier Syndrome Megakaryocytes and Platelets Using Patient-Derived Induced Pluripotent Stem Cells. Thromb Haemost 2019; 119:1461-1470. [DOI: 10.1055/s-0039-1693409] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
AbstractBernard–Soulier syndrome (BSS) is a hereditary macrothrombocytopenia caused by defects in the glycoprotein (GP) Ib-IX-V complex. The mechanism of giant platelet formation remains undefined. Currently, megakaryocytes (MKs) can be generated from induced pluripotent stem cells (iPSCs) to study platelet production under pharmacological or genetic manipulations. Here, we generated iPSC lines from two BSS patients with mutations in different genes (GP1BA and GP1BB: termed BSS-A and BSS-B, respectively). The iPSC-derived MKs and platelets were examined under electron microscopy and stained by immunofluorescence to observe proplatelet formation and measure platelet diameters which were defined by circumferential tubulin. BSS-iPSCs produced abnormal proplatelets with thick shafts and tips. In addition, compared with the normal iPSCs, the diameters were larger in platelets derived from BSS-A and BSS-B with the means ± standard deviations of 4.34 ± 0.043 and 3.88 ± 0.045 µm, respectively (wild-type iPSCs 2.61 ± 0.025 µm, p < 0.001). Electron microscopy revealed giant platelets with the abnormal demarcation membrane system. Correction of BSS-A and BSS-B-iPSCs using lentiviral vectors containing respective GP1BA and GP1BB genes improved proplatelet structures and platelet ultrastructures as well as reduced platelets sizes. In conclusion, the iPSC model can be used to explore molecular mechanisms and potential therapy for BSS.
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Affiliation(s)
- Ponthip Mekchay
- Interdisciplinary Program of Biomedical Sciences, Graduate School, Chulalongkorn University, Bangkok, Thailand
| | - Praewphan Ingrungruanglert
- Stem Cell and Cell Therapy Research Unit, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Kanya Suphapeetiporn
- Department of Pediatrics, Center of Excellence for Medical Genomics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Excellence Center for Medical Genetics, King Chulalongkorn Memorial Hospital, the Thai Red Cross Society, Bangkok, Thailand
| | - Darintr Sosothikul
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Wilawan Ji-au
- Department of Pathology, Faculty of Medicine, King Chulalongkorn Memorial Hospital, Chulalongkorn University, Bangkok, Thailand
| | - Supang Maneesri Le Grand
- Department of Pathology, Faculty of Medicine, King Chulalongkorn Memorial Hospital, Chulalongkorn University, Bangkok, Thailand
| | - Nipan Israsena
- Stem Cell and Cell Therapy Research Unit, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Ponlapat Rojnuckarin
- Division of Hematology, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
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14
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Chalertpet K, Pin-On P, Aporntewan C, Patchsung M, Ingrungruanglert P, Israsena N, Mutirangura A. Argonaute 4 as an Effector Protein in RNA-Directed DNA Methylation in Human Cells. Front Genet 2019; 10:645. [PMID: 31333722 PMCID: PMC6620710 DOI: 10.3389/fgene.2019.00645] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 06/18/2019] [Indexed: 01/06/2023] Open
Abstract
DNA methylation of specific genome locations contributes to the distinct functions of multicellular organisms. DNA methylation can be governed by RNA-dependent DNA methylation (RdDM). RdDM is carried out by endogenous small-RNA-guided epigenomic editing complexes that add a methyl group to a precise DNA location. In plants, the Argonaute 4 (AGO4) protein is one of the main catalytic components involved in RdDM. Although small interfering RNA or short hairpin RNA has been shown to be able to guide DNA methylation in human cells, AGO protein-regulated RdDM in humans has not yet been evaluated. This study aimed to identify a key regulatory AGO protein involved in human RdDM by bioinformatics and to explore its function in RdDM by a combination of AGO4 knockdown, Alu small interfering RNA transfection, AGO4-expressing plasmid transfection, chromatin immunoprecipitation, cell-penetrating peptide-tagged AGO4 combined Alu single-guide RNA transfection, and methylation analyses. We found that first, human AGO4 showed stronger genome-wide association with DNA methylation than AGO1–AGO3. Second, endogenous AGO4 depletion demethylated DNA of known AGO4 bound loci. Finally, exogenous AGO4 de novo methylated the bound DNA sequences. Therefore, we discovered that AGO4 plays a role in human RdDM.
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Affiliation(s)
- Kanwalat Chalertpet
- Interdisciplinary Program of Biomedical Sciences, Faculty of the Graduate School, Chulalongkorn University, Bangkok, Thailand
| | - Piyapat Pin-On
- Interdisciplinary Program of Biomedical Sciences, Faculty of the Graduate School, Chulalongkorn University, Bangkok, Thailand.,Faculty of Medicine, King Mongkut's Institute of Technology Ladkrabang, Bangkok, Thailand
| | - Chatchawit Aporntewan
- Department of Mathematics and Computer Science, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Maturada Patchsung
- Interdisciplinary Program of Biomedical Sciences, Faculty of the Graduate School, Chulalongkorn University, Bangkok, Thailand.,Center of Excellence in Molecular Genetics of Cancer and Human Diseases, Department of Anatomy, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Praewphan Ingrungruanglert
- Stem Cells and Cell Therapy Research Unit, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Nipan Israsena
- Stem Cells and Cell Therapy Research Unit, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Apiwat Mutirangura
- Center of Excellence in Molecular Genetics of Cancer and Human Diseases, Department of Anatomy, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Department of Anatomy, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
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15
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Phakdeedindan P, Setthawong P, Tiptanavattana N, Rungarunlert S, Ingrungruanglert P, Israsena N, Techakumphu M, Tharasanit T. Rabbit induced pluripotent stem cells retain capability of in vitro cardiac differentiation. Exp Anim 2019; 68:35-47. [PMID: 30089733 PMCID: PMC6389514 DOI: 10.1538/expanim.18-0074] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 07/10/2018] [Indexed: 12/12/2022] Open
Abstract
Stem cells are promising cell source for treatment of multiple diseases as well as myocardial infarction. Rabbit model has essentially used for cardiovascular diseases and regeneration but information on establishment of induced pluripotent stem cells (iPSCs) and differentiation potential is fairly limited. In addition, there is no report of cardiac differentiation from iPSCs in the rabbit model. In this study, we generated rabbit iPSCs by reprogramming rabbit fibroblasts using the 4 transcription factors (OCT3/4, SOX2, KLF4, and c-Myc). Three iPSC lines were established. The iPSCs from all cell lines expressed genes (OCT3/4, SOX2, KLF4 and NANOG) and proteins (alkaline phosphatase, OCT-3/4 and SSEA-4) essentially described for pluripotency (in vivo and in vitro differentiation). Furthermore, they also had ability to form embryoid body (EB) resulting in three-germ layer differentiation. However, ability of particular cell lines and cell numbers at seeding markedly influenced on EB formation and also their diameters. The cell density at 20,000 cells per EB was selected for cardiac differentiation. After plating, the EBs attached and cardiac-like beating areas were seen as soon as 11 days of culture. The differentiated cells expressed cardiac progenitor marker FLK1 (51 ± 1.48%) on day 5 and cardiac troponin-T protein (10.29 ± 1.37%) on day 14. Other cardiac marker genes (cardiac ryanodine receptors (RYR2), α-actinin and PECAM1) were also expressed. This study concluded that rabbit iPSCs remained their in vitro pluripotency with capability of differentiation into mature-phenotype cardiomyocytes. However, the efficiency of cardiac differentiation is still restricted.
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Affiliation(s)
- Praopilas Phakdeedindan
- Biochemistry Unit, Department of Physiology, Faculty of Veterinary Science, Chulalongkorn University, 39 Henri-Dunant Rd., Pathumwan, Bangkok 10330, Thailand
| | - Piyathip Setthawong
- Department of Obstetrics, Gynaecology and Reproduction, Faculty of Veterinary Science, Chulalongkorn University, 39 Henri-Dunant Rd., Pathumwan, Bangkok 10330, Thailand
| | - Narong Tiptanavattana
- Faculty of Veterinary Science, Prince of Songkla University, 15 Kanjanavanich Road, Hat Yai Songkhla 90110, Thailand
| | - Sasitorn Rungarunlert
- Faculty of Veterinary Science, Mahidol University, 999 Phutthamonthon Sai 4 Road, Nakhonpathom, 73170, Thailand
| | - Praewphan Ingrungruanglert
- Stem Cells and Cell Therapy Research Unit, Faculty of Medicine, Chulalongkorn University, 1873 Henri-Dunant Rd., Pathumwan, Bangkok 10330, Thailand
| | - Nipan Israsena
- Stem Cells and Cell Therapy Research Unit, Faculty of Medicine, Chulalongkorn University, 1873 Henri-Dunant Rd., Pathumwan, Bangkok 10330, Thailand
| | - Mongkol Techakumphu
- Department of Obstetrics, Gynaecology and Reproduction, Faculty of Veterinary Science, Chulalongkorn University, 39 Henri-Dunant Rd., Pathumwan, Bangkok 10330, Thailand
| | - Theerawat Tharasanit
- Department of Obstetrics, Gynaecology and Reproduction, Faculty of Veterinary Science, Chulalongkorn University, 39 Henri-Dunant Rd., Pathumwan, Bangkok 10330, Thailand
- The Research and Development Center for Livestock Production Technology at the Faculty of Veterinary Science, Chulalongkorn University, Thailand
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16
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Moonmuang S, Saoin S, Chupradit K, Sakkhachornphop S, Israsena N, Rungsiwiwut R, Tayapiwatana C. Modulated expression of the HIV-1 2LTR zinc finger efficiently interferes with the HIV integration process. Biosci Rep 2018; 38:BSR20181109. [PMID: 30068696 PMCID: PMC6127673 DOI: 10.1042/bsr20181109] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 07/28/2018] [Accepted: 07/31/2018] [Indexed: 11/30/2022] Open
Abstract
Lentiviral vectors have emerged as the most efficient system to stably transfer and insert genes into cells. By adding a tetracycline (Tet)-inducible promoter, transgene expression delivered by a lentiviral vector can be expressed whenever needed and halted when necessary. Here we have constructed a doxycycline (Dox)-inducible lentiviral vector which efficiently introduces a designed zinc finger protein, 2-long terminal repeat zinc-finger protein (2LTRZFP), into hematopoietic cell lines and evaluated its expression in pluripotent stem cells. As a result this lentiviral inducible system can regulate 2LTRZFP expression in the SupT1 T-cell line and in pluripotent stem cells. Using this vector, no basal expression was detected in the T-cell line and its induction was achieved with low Dox concentrations. Remarkably, the intracellular regulatory expression of 2LTRZFP significantly inhibited HIV-1 integration and replication in HIV-inoculated SupT1 cells. This approach could provide a potential tool for gene therapy applications, which efficiently control and reduce the side effect of therapeutic genes expression.
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Affiliation(s)
- Sutpirat Moonmuang
- Center of Biomolecular Therapy and Diagnostic, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand
- Division of Clinical Immunology, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Somphot Saoin
- Center of Biomolecular Therapy and Diagnostic, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand
- Division of Clinical Immunology, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Koollawat Chupradit
- Center of Biomolecular Therapy and Diagnostic, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand
- Division of Clinical Immunology, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand
| | | | - Nipan Israsena
- Stem Cell and Cell Therapy Research Unit, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
- Department of Pharmacology, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
| | - Ruttachuk Rungsiwiwut
- Department of Anatomy, Faculty of Medicine, Srinakharinwirot University, Bangkok 10900, Thailand
| | - Chatchai Tayapiwatana
- Center of Biomolecular Therapy and Diagnostic, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand
- Division of Clinical Immunology, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand
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17
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Amornwachirabodee K, Khramchantuk S, Pienpinijtham P, Israsena N, Palaga T, Wanichwecharungruang S. Enhancing Passive Transport of Micro/Nano Particles into Cells by Oxidized Carbon Black. ACS Omega 2018; 3:6833-6840. [PMID: 30023963 PMCID: PMC6044846 DOI: 10.1021/acsomega.8b00487] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 06/11/2018] [Indexed: 05/07/2023]
Abstract
Uses of micro-/nano-sized particles to deliver biologically active entities into cells are common for medical therapeutics and prophylactics and also for cellular experiments. Enhancing cellular uptake and avoiding destruction by lysosomes are desirable for general particulate drug delivery systems. Here, we show that the relatively nontoxic, negatively charged oxidized carbon black particles (OCBs) can enhance cellular penetration of micro- and nano-particles. Experiments with retinal-grafted chitosan particles (PRPs) with hydrodynamic sizes of 1200 ± 51.5, 540 ± 29.0, and 430 ± 11.0 nm (three-sized model particles) indicate that only the sub-micron-sized particles can penetrate the first layer of multilayered liposomes. However, in the presence of OCBs, the micron-sized PRPs and the two submicron-sized PRPs can rapidly enter the interiors of all layers of the multilayered liposomes. Very low cellular uptakes of micro- and submicron-sized PRPs into keratinocytes cells are usually observed. However, in the presence of OCBs, faster and higher cellular uptakes of all of the three-sized PRPs are clearly noticed. Intracellular traffic monitoring of PRP uptake into HepG2 cells in the presence of OCBs revealed that the PRPs did not co-localize with endosomes, suggesting a nonendocytic uptake process. This demonstration of OCB's ability to enhance cellular uptake of micro- and submicron-particles should open up an easy strategy to effectively send various carriers into cells.
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Affiliation(s)
- Kittima Amornwachirabodee
- Department
of Chemistry, Faculty of Science, Center of Excellence on Petrochemical
and Materials Technology, Stem Cell and Cell Therapy Research Unit, Faculty of
Medicine, Department of Microbiology, Faculty of Science, and Center of Excellence in Materials
and Bio-interfaces, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Supaporn Khramchantuk
- Department
of Chemistry, Faculty of Science, Center of Excellence on Petrochemical
and Materials Technology, Stem Cell and Cell Therapy Research Unit, Faculty of
Medicine, Department of Microbiology, Faculty of Science, and Center of Excellence in Materials
and Bio-interfaces, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Prompong Pienpinijtham
- Department
of Chemistry, Faculty of Science, Center of Excellence on Petrochemical
and Materials Technology, Stem Cell and Cell Therapy Research Unit, Faculty of
Medicine, Department of Microbiology, Faculty of Science, and Center of Excellence in Materials
and Bio-interfaces, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Nipan Israsena
- Department
of Chemistry, Faculty of Science, Center of Excellence on Petrochemical
and Materials Technology, Stem Cell and Cell Therapy Research Unit, Faculty of
Medicine, Department of Microbiology, Faculty of Science, and Center of Excellence in Materials
and Bio-interfaces, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Tanapat Palaga
- Department
of Chemistry, Faculty of Science, Center of Excellence on Petrochemical
and Materials Technology, Stem Cell and Cell Therapy Research Unit, Faculty of
Medicine, Department of Microbiology, Faculty of Science, and Center of Excellence in Materials
and Bio-interfaces, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Supason Wanichwecharungruang
- Department
of Chemistry, Faculty of Science, Center of Excellence on Petrochemical
and Materials Technology, Stem Cell and Cell Therapy Research Unit, Faculty of
Medicine, Department of Microbiology, Faculty of Science, and Center of Excellence in Materials
and Bio-interfaces, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok 10330, Thailand
- E-mail: , (S.W.)
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Sangsanoh P, Ekapakul N, Israsena N, Suwantong O, Supaphol P. Enhancement of biocompatibility on aligned electrospun poly(3-hydroxybutyrate) scaffold immobilized with laminin towards murine neuroblastoma Neuro2a cell line and rat brain-derived neural stem cells (mNSCs). POLYM ADVAN TECHNOL 2018. [DOI: 10.1002/pat.4313] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Pakakrong Sangsanoh
- Technological Center for Electrospun Fibers, The Petroleum and Petrochemical College; Chulalongkorn University; Phyathai Road, Pathumwan Bangkok 10330 Thailand
| | - Natjaya Ekapakul
- Technological Center for Electrospun Fibers, The Petroleum and Petrochemical College; Chulalongkorn University; Phyathai Road, Pathumwan Bangkok 10330 Thailand
| | - Nipan Israsena
- Department of Pharmacology, Faculty of Medicine; Chulalongkorn University; Phyathai Road, Pathumwan Bangkok 10330 Thailand
| | - Orawan Suwantong
- Center of Chemical Innovation for Sustainability (CIS); Mae Fah Luang University; Tasud, Muang Chiang Rai 57100 Thailand
- School of Science; Mae Fah Luang University; Tasud, Muang Chiang Rai 57100 Thailand
| | - Pitt Supaphol
- Technological Center for Electrospun Fibers, The Petroleum and Petrochemical College; Chulalongkorn University; Phyathai Road, Pathumwan Bangkok 10330 Thailand
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Sangsanoh P, Israsena N, Suwantong O, Supaphol P. Effect of the surface topography and chemistry of poly(3-hydroxybutyrate) substrates on cellular behavior of the murine neuroblastoma Neuro2a cell line. Polym Bull (Berl) 2017. [DOI: 10.1007/s00289-017-1947-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Ratanasirintrawoot S, Israsena N. Stem Cells in the Intestine: Possible Roles in Pathogenesis of Irritable Bowel Syndrome. J Neurogastroenterol Motil 2016; 22:367-82. [PMID: 27184041 PMCID: PMC4930294 DOI: 10.5056/jnm16023] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Accepted: 03/08/2016] [Indexed: 12/13/2022] Open
Abstract
Irritable bowel syndrome is one of the most common functional gastrointestinal (GI) disorders that significantly impair quality of life in patients. Current available treatments are still not effective and the pathophysiology of this condition remains unclearly defined. Recently, research on intestinal stem cells has greatly advanced our understanding of various GI disorders. Alterations in conserved stem cell regulatory pathways such as Notch, Wnt, and bone morphogenic protein/TGF-β have been well documented in diseases such as inflammatory bowel diseases and cancer. Interaction between intestinal stem cells and various signals from their environment is important for the control of stem cell self-renewal, regulation of number and function of specific intestinal cell types, and maintenance of the mucosal barrier. Besides their roles in stem cell regulation, these signals are also known to have potent effects on immune cells, enteric nervous system and secretory cells in the gut, and may be responsible for various aspects of pathogenesis of functional GI disorders, including visceral hypersensitivity, altered gut motility and low grade gut inflammation. In this article, we briefly summarize the components of these signaling pathways, how they can be modified by extrinsic factors and novel treatments, and provide evidenced support of their roles in the inflammation processes. Furthermore, we propose how changes in these signals may contribute to the symptom development and pathogenesis of irritable bowel syndrome.
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Affiliation(s)
- Sutheera Ratanasirintrawoot
- Stem Cell and Cell Therapy Research Unit, Chulalongkorn University, Bangkok, Thailand.,Department of Research Affairs, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Nipan Israsena
- Stem Cell and Cell Therapy Research Unit, Chulalongkorn University, Bangkok, Thailand.,Department of Pharmacology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
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Sukpat S, Israsena N, Patumraj S. Pleiotropic Effects of Simvastatin on Wound Healing in Diabetic Mice. J Med Assoc Thai 2016; 99:213-219. [PMID: 27249902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE To evaluate the effects of pre-treatment with low-dose simvastatin on angiogenesis and wound healing in a diabetic mouse model. MATERIAL AND METHODS Balb/c nude mice were divided into three groups, including control (CON), diabetic (DM, and diabetic pre-treated with low-dose simvastatin (DM+ SIM). Seven days prior to wounding, the DM + SIM group was started on oral simvastatin (0.25 mg/kg/day). Eleven weeks after diabetes was induced, all mice were subjected to a bilateral full-thickness excisional skin wound on the back (0.6 x 0.6 cm²). On day 14 after wounding, percentage of wound closure (%WC), percentage of capillary vascularity (%CV), and neutrophil infiltration were determined using Image Pro-Plus, confocal fluorescence microscopy, and hematoxylin and eosin (H&E) staining, respectively. Tissue vascular endothelial growth factor (VEGF) was detected by ELISA at days 7 and 14, post-wounding. RESULTS On day 14, %WC and %CV in CON and DM + SIM groups were significantly increased, with no significant change observed in the DM group. Neutrophil infiltration in the CON and DM + SIM groups was signficantly lower than that of the DM group. VEGF levels in the CON and DM + SIM groups were significantly higher than levels in the DM group on day 7, but not different among groups on day 14. CONCLUSION The present study demonstrated that pre-treatment with low-dose simvastatin could increase angiogenesis, reduce inflammation, and improve wound healing in diabetic mice.
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Vejjasilpa K, Nasongkla N, Manaspon C, Larbcharoensub N, Boongird A, Hongeng S, Israsena N. Antitumor efficacy and intratumoral distribution of SN-38 from polymeric depots in brain tumor model. Exp Biol Med (Maywood) 2015; 240:1640-7. [PMID: 26080460 DOI: 10.1177/1535370215590819] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2015] [Accepted: 05/13/2015] [Indexed: 11/16/2022] Open
Abstract
We investigate antitumor efficacy and 2D and 3D intratumoral distribution of 7-ethyl-10-hydroxycamptothecin (SN-38) from polymeric depots inside U-87MG xenograft tumor model in nude mice. Results showed that polymeric depots could be used to administer and controlled release of a large amount of SN-38 directly to the brain tumor model. SN-38 released from depots suppressed tumor growth, where the extent of suppression greatly depended on doses and the number of depot injections. Tumor suppression of SN-38 from depots was three-fold higher in animals which received double injections of depots at high dose (9.7 mg of SN-38) compared to single injection (2.2 mg). H&E staining of tumor sections showed that the area of tumor cell death/survival of the former group was two-fold higher than those of the latter group. Fluorescence imaging based on self-fluorescent property of SN-38 was used to evaluate the intratumoral distribution of this drug compared to histological results. The linear correlation between fluorescence intensity and the amount of SN-38 allowed quantitative determination of SN-38 in tumor tissues. Results clearly showed direct correlation between the amount of SN-38 in tumor sections and cancer cell death. Moreover, 3D reconstruction representing the distribution of SN-38 in tumors was obtained. Results from this study suggest the rationale for intratumoral drug administration and release of drugs inside tumor, which is necessary to design drug delivery systems with efficient antitumor activity.
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Affiliation(s)
- Ketpat Vejjasilpa
- Department of Biomedical Engineering, Faculty of Engineering, Mahidol University, Nakorn Pathom 73170, Thailand
| | - Norased Nasongkla
- Department of Biomedical Engineering, Faculty of Engineering, Mahidol University, Nakorn Pathom 73170, Thailand
| | - Chawan Manaspon
- Department of Biomedical Engineering, Faculty of Engineering, Mahidol University, Nakorn Pathom 73170, Thailand
| | - Noppadol Larbcharoensub
- Department of Pathology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok 10400, Thailand
| | - Atthaporn Boongird
- Department of Surgery, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok 10400, Thailand
| | - Suradej Hongeng
- Department of Paediatrics, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok 10400, Thailand
| | - Nipan Israsena
- Department of Pharmacology, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
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Ingrungruanglert P, Amarinthnukrowh P, Rungsiwiwut R, Maneesri-le Grand S, Sosothikul D, Suphapeetiporn K, Israsena N, Shotelersuk V. Wiskott-Aldrich syndrome iPS cells produce megakaryocytes with defects in cytoskeletal rearrangement and proplatelet formation. Thromb Haemost 2014; 113:792-805. [PMID: 25518736 DOI: 10.1160/th14-06-0503] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Accepted: 11/04/2014] [Indexed: 12/16/2022]
Abstract
Wiskott-Aldrich syndrome (WAS) is an X-linked recessive disorder characterised by microthrombocytopenia, complex immunodeficiency, autoimmunity, and haematologic malignancies. It is caused by mutations in the gene encoding WAS protein (WASP), a regulator of actin cytoskeleton and chromatin structure in various blood cell lineages. The molecular mechanisms underlying microthrombocytopenia caused by WASP mutations remain elusive. Murine models of WASP deficiency exhibited only mild thrombocytopenia with normal-sized platelets. Here we report on the successful generation of induced pluripotent stem cell (iPSC) lines from two patients with different mutations in WASP (c.1507T>A and c.55C>T). When differentiated into early CD34+ haematopoietic and megakaryocyte progenitors, the WAS-iPSC lines were indistinguishable from the wild-type iPSCs. However, all WAS-iPSC lines exhibited defects in platelet productionin vitro. WAS-iPSCs produced platelets with more irregular shapes and smaller sizes. Immunofluorescence and electron micrograph showed defects in cytoskeletal rearrangement, F-actin distribution, and proplatelet formation. Proplatelet defects were more pronounced when using culture systems with stromal feeders comparing to feeder-free culture condition. Overexpression of WASP in the WAS-iPSCs using a lentiviral vector improved proplatelet structures and increased the platelet size. Our findings substantiate the use of iPSC technology to elucidate the disease mechanisms of WAS in thrombopoiesis.
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Affiliation(s)
| | | | | | | | | | - Kanya Suphapeetiporn
- Kanya Suphapeetiporn, MD, PhD, Head, Division of Medical Genetics and Metabolism, Sor Kor Building 11th floor, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand, Tel.: +662 256 4951, Fax: +662 256 4000 Ext 3589, E-mail:
| | - Nipan Israsena
- Nipan Israsena, MD, PhD, Head, Stem Cell and Cell Therapy, Research Unit, Chulalongkorn University, Bangkok 10330, Thailand, Tel.: +662 256 4000 Ext 3589, Fax: +662 256 4911, E-mail:
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Sudwilai T, Ng JJ, Boonkrai C, Israsena N, Chuangchote S, Supaphol P. Polypyrrole-coated electrospun poly(lactic acid) fibrous scaffold: effects of coating on electrical conductivity and neural cell growth. J Biomater Sci Polym Ed 2014; 25:1240-52. [PMID: 24933469 DOI: 10.1080/09205063.2014.926578] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Neuronal activities play critical roles in both neurogenesis and neural regeneration. In that sense, electrically conductive and biocompatible biomaterial scaffolds can be applied in various applications of neural tissue engineering. In this study, we fabricated a novel biomaterial for neural tissue engineering applications by coating electrospun poly(lactic acid) (PLA) nanofibers with a conducting polymer, polypyrole (PPy), via admicellar polymerization. Optimal conditions for polymerization and preparation of PPy-coated electrospun PLA nanofibers were obtained by comparing results from scanning electron microscopy, X-ray photoelectron spectrometer, and surface conductivity tests. In vitro cell culture experiments showed that PPy-coated electrospun PLA fibrous scaffold is not toxic. The scaffold could support attachment and migration of neural progenitor cells. Neurons derived from progenitor exhibited long neurite outgrowth under electrical stimulation. Our study concluded that PPy-coated electrospun PLA fibers had a good biocompatibility with neural progenitor cells and may serve as a promising material for controlling progenitor cell behaviors and enhancing neural repair.
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Affiliation(s)
- Thitima Sudwilai
- a Center of Excellence on Petrochemical and Materials Technology (PETROMAT) , Soi Chula 12, Phyathai Rd., Pathumwan, Bangkok 10330 , Thailand
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Thumsing S, Israsena N, Boonkrai C, Supaphol P. Preparation of bioactive glycosylated glial cell-line derived neurotrophic factor-loaded microspheres for medical applications. J Appl Polym Sci 2013. [DOI: 10.1002/app.40168] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Saowapa Thumsing
- The Petroleum and Petrochemical College; Chulalongkorn University; Bangkok 10330 Thailand
| | - Nipan Israsena
- Department of Pharmacology; Faculty of Medicine; Chulalongkorn University; Bangkok 10330 Thailand
- The Stem Cell and Cell Therapy Research Unit, Faculty of Medicine; Chulalongkorn University; Bangkok 10330 Thailand
- The Neuroscience of Headache Research Unit, Faculty of Medicine; Chulalongkorn University; Bangkok 10330 Thailand
| | - Chatikorn Boonkrai
- The Stem Cell and Cell Therapy Research Unit, Faculty of Medicine; Chulalongkorn University; Bangkok 10330 Thailand
- The Neuroscience of Headache Research Unit, Faculty of Medicine; Chulalongkorn University; Bangkok 10330 Thailand
| | - Pitt Supaphol
- The Petroleum and Petrochemical College; Chulalongkorn University; Bangkok 10330 Thailand
- The Center of Excellence on Petrochemical and Materials Technology; Chulalongkorn University; Bangkok 10330 Thailand
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Jalali A, Bassuk AG, Kan L, Israsena N, Mukhopadhyay A, McGuire T, Kessler JA. HeyL promotes neuronal differentiation of neural progenitor cells. J Neurosci Res 2011; 89:299-309. [PMID: 21259317 DOI: 10.1002/jnr.22562] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2010] [Revised: 10/09/2010] [Accepted: 10/19/2010] [Indexed: 11/06/2022]
Abstract
Members of the Hes and Hey families of basic helix-loop-helix transcription factors are regarded as Notch target genes that generally inhibit neuronal differentiation of neural progenitor cells. We found that HeyL, contrary to the classic function of Hes and Hey factors, promotes neuronal differentiation of neural progenitor cells both in culture and in the embryonic brain in vivo. Furthermore, null mutation of HeyL decreased the rate of neuronal differentiation of cultured neural progenitor cells. HeyL binds to and activates the promoter of the proneural gene neurogenin2, which is inhibited by other Hes and Hey family members, and HeyL is a weak inhibitor of the Hes1 promoter. HeyL is able to bind other Hes and Hey family members, but it cannot bind the Groucho/Tle1 transcriptional corepressor, which mediates the inhibitory effects of the Hes family of factors. Furthermore, although HeyL expression is only weakly augmented by Notch signaling, we found that bone morphogenic protein signaling increases HeyL expression by neural progenitor cells. These observations suggest that HeyL promotes neuronal differentiation of neural progenitor cells by activating proneural genes and by inhibiting the actions of other Hes and Hey family members.
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Affiliation(s)
- Ali Jalali
- Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
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Laothamatas J, Wacharapluesadee S, Lumlertdacha B, Ampawong S, Tepsumethanon V, Shuangshoti S, Phumesin P, Asavaphatiboon S, Worapruekjaru L, Avihingsanon Y, Israsena N, Lafon M, Wilde H, Hemachudha T. Furious and paralytic rabies of canine origin: neuroimaging with virological and cytokine studies. J Neurovirol 2008; 14:119-29. [PMID: 18444083 DOI: 10.1080/13550280701883857] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Furious and paralytic rabies differ in clinical manifestations and survival periods. The authors studied magnetic resonance imaging (MRI) and cytokine and virus distribution in rabies-infected dogs of both clinical types. MRI examination of the brain and upper spinal cord was performed in two furious and two paralytic dogs during the early clinical stage. Rabies viral nucleoprotein RNA and 18 cytokine mRNAs at 12 different brain regions were studied. Rabies viral RNA was examined in four furious and four paralytic dogs during the early stage, and in one each during the late stage. Cytokine mRNAs were examined in two furious and two paralytic dogs during the early stage and in one each during the late stage. Larger quantities of rabies viral RNA were found in the brains of furious than in paralytic dogs. Interleukin-1beta and interferon-gamma mRNAs were found exclusively in the brains of paralytic dogs during the early stage. Abnormal hypersignal T2 changes were found at hippocampus, hypothalamus, brainstem, and spinal cord of paralytic dogs. More widespread changes of less intensity were seen in furious dog brains. During the late stage of infection, brains from furious and paralytic rabid dogs were similarly infected and there were less detectable cytokine mRNAs. These results suggest that the early stage of furious dog rabies is characterized by a moderate inflammation (as indicated by MRI lesions and brain cytokine detection) and a severe virus neuroinvasiveness. Paralytic rabies is characterized by delayed viral neuroinvasion and a more intense inflammation than furious rabies. Dogs may be a good model for study of the host inflammatory responses that may modulate rabies virus neuroinvasiveness.
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Affiliation(s)
- Jiraporn Laothamatas
- Department of Radiology, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
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Kessler JA, Gomes W, Guha U. Symposium 1: Regulation of Neural Development by BMP and Activin Family Members. J Neurochem 2008. [DOI: 10.1046/j.1471-4159.81.s1.47_1.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Kan L, Israsena N, Zhang Z, Hu M, Zhao LR, Jalali A, Sahni V, Kessler JA. Sox1 acts through multiple independent pathways to promote neurogenesis. Dev Biol 2004; 269:580-94. [PMID: 15110721 DOI: 10.1016/j.ydbio.2004.02.005] [Citation(s) in RCA: 132] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2003] [Revised: 02/04/2004] [Accepted: 02/05/2004] [Indexed: 11/30/2022]
Abstract
Although Sox1, Sox2, and Sox3 are all part of the Sox-B1 group of transcriptional regulators, only Sox1 appears to play a direct role in neural cell fate determination and differentiation. We find that overexpression of Sox1 but not Sox2 or Sox3 in cultured neural progenitor cells is sufficient to induce neuronal lineage commitment. Sox1 binds directly to the Hes1 promoter and suppresses Hes1 transcription, thus attenuating Notch signaling. Sox1 also binds to beta-catenin and suppresses beta-catenin-mediated TCF/LEF signaling, thus potentially attenuating the wnt signaling pathway. The C-terminus of Sox1 is required for both of these interactions. Sox1 also promotes exit of cells from cell cycle and up-regulates transcription of the proneural bHLH transcription factor neurogenin 1 (ngn1). These observations suggest that Sox1 works through multiple independent pathways to promote neuronal cell fate determination and differentiation.
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Affiliation(s)
- Lixin Kan
- Department of Neurology, Northwestern University's Feinberg School of Medicine, Chicago, IL 60611-3008, USA.
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Israsena N, Hu M, Fu W, Kan L, Kessler JA. The presence of FGF2 signaling determines whether beta-catenin exerts effects on proliferation or neuronal differentiation of neural stem cells. Dev Biol 2004; 268:220-31. [PMID: 15031118 DOI: 10.1016/j.ydbio.2003.12.024] [Citation(s) in RCA: 175] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2003] [Revised: 12/22/2003] [Accepted: 12/23/2003] [Indexed: 01/05/2023]
Abstract
Neural stem cells proliferate and maintain multipotency when cultured in the presence of FGF2, but subsequent lineage commitment by the cells is nevertheless influenced by the exposure to FGF2. Here we show that FGF2 effects on neural stem cells are mediated, in part, by beta-catenin. Conversely, the effects of beta-catenin in neural stem cells depend in part upon whether there is concurrent fibroblast growth factor (FGF) signaling. FGF2 increases beta-catenin signaling through several different mechanisms including increased expression of beta-catenin mRNA, increased nuclear translocation of beta-catenin, increased phosphorylation of GSK-3beta, and tyrosine phosphorylation of beta-catenin. Overexpression of beta-catenin in the presence of FGF2 helps to maintain neural progenitor cells in a proliferative state. However, overexpression of beta-catenin in the absence of FGF2 enhances neuronal differentiation. Further, chromatin immunoprecipitation (ChIP) assays demonstrate that both beta-catenin and Lef1 bind directly to the neurogenin promoter, and luciferase reporter assays demonstrate that beta-catenin is directly involved in the regulation of neurogenin 1 and possibly other proneural genes when neural stem cells are cultured in the presence of FGF2. We suggest that the balance between the mitogenic effects and the proneural effects of beta-catenin is determined by the presence of FGF signaling.
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Affiliation(s)
- Nipan Israsena
- Department of Neurology, Northwestern University's Feinberg School of Medicine, Chicago, IL 60611-3008, USA
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Israsena N, Kessler JA. Msx2 and p21(CIP1/WAF1) mediate the proapoptotic effects of bone morphogenetic protein-4 on ventricular zone progenitor cells. J Neurosci Res 2002; 69:803-9. [PMID: 12205674 DOI: 10.1002/jnr.10362] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Treatment of cultured ventricular zone (VZ) progenitor cells with bone morphogenetic protein-4 (BMP4) promoted cell death in a dose-dependent manner. VZ progenitor cells became progressively more resistant to the proapoptotic effects of BMP4 between E10 and E16, and, by E18 and thereafter, BMP4 treatment no longer led to progenitor cell death. BMP4 treatment of E13 progenitor cells promoted expression of msx2 and p21(CIP1/WAF1) (p21) and inhibition of expression of either gene prevented BMP4-mediated apoptosis. Treatment of E18 cells with BMP4 failed to induce apoptosis but still induced expression of low levels of msx2 and p21. Knockout of bax significantly reduced but did not prevent BMP4-mediated death of E13 murine progenitor cells. These observations indicate that msx2 and p21 mediate the proapoptotic effects of BMP4 on VZ progenitor cells and that each gene is necessary but insufficient to promote apoptosis.
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Affiliation(s)
- Nipan Israsena
- Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York, USA
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Israsena N, Phanthumchinda K, Sinsawaiwong S, Lerdlum S. Spontaneous carotid dissection. J Med Assoc Thai 1997; 80:406-10. [PMID: 9240017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Spontaneous internal carotid dissection typically occurs in young or middle-aged patients. It is associated with a high rate of recovery and low mortality. Anticoagulant and antiplatelet drugs fail to demonstrate a significant improvement when compared with placebo. A 38 year-old woman with spontaneous dissection of the internal carotid artery diagnosed by MRI is reported. She had an excellent recovery without treatment and no recurrent attack occurred after one year of follow-up. The clinical manifestations, diagnostic tests and treatment of spontaneous internal carotid disection are briefly reviewed in this communication.
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Affiliation(s)
- N Israsena
- Department of Pharmacology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
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