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Daboss S, Philipp T, Palanisamy K, Flowers J, Stein H, Kranz C. Characterization of the Solid/Electrolyte Interphase at Hard Carbon Anodes via Scanning (Electrochemical) Probe Microscopy. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2023.142345] [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: 04/03/2023]
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2
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Sanjiv Raj K, Nirmala Devi M, Palanisamy K, Subramanian V. Individual and synergetic effect of EDTA and NTA on polymorphism and morphology of CaCO3 crystallization process in presence of barium. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.122026] [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: 10/22/2022]
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3
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Li CH, Palanisamy K, Li X, Yu SH, Wang IK, Li CY, Sun KT. Exosomal tumor necrosis factor-α from hepatocellular cancer cells (Huh-7) promote osteoclast differentiation. J Cell Biochem 2021; 122:1749-1760. [PMID: 34383347 DOI: 10.1002/jcb.30127] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 07/26/2021] [Accepted: 07/29/2021] [Indexed: 12/28/2022]
Abstract
Bone is the common extra-hepatic site for cancer metastasis. Hepatic cancer is associated with a higher incidence of pathological fracture. However, this important regulatory mechanism remains unexplored. Thus, exosome-mediated cell-cell communication between hepatocellular cancer and bone might be key to osteolytic bone destruction. Huh-7 exosomes were characterized for size and exosome marker expressions (CD63, Alix). Exosome mediated osteoclast differentiation in the RAW 264.7 cells was monitored from day 1 to 6 and multinucleated osteoclast formation and bone resorption activity were analyzed. The osteoclastogenic factor expressions in the exosomes and osteoclast differentiation markers such as tumor necrosis factor receptor 6 (TRAF6), nuclear factor κB (NF-κB), nuclear factor of activated T-cells, cytoplasmic 1 (NFATc1), and cathepsin K (CTSK) were analyzed using western blot. Exosomes released by liver cancer cells (Huh-7) promoted osteoclast differentiation in RAW 264.7 cells. Analysis of osteoclastogenic factors in the exosomes showed that exosomes were specifically enriched with tumor necrosis factor α (TNF-α). Huh-7 exosomes promoted osteoclast differentiation by significantly increasing the number of TRAP-positive multi nucleated osteoclasts and resorption pits. Importantly, exosomes upregulated osteoclast markers TRAF6, NF-κB, and CTSK expressions. Further, neutralizing exosomal TNF-α reverted exosome-mediated osteoclast differentiation in RAW 264.7 cells. Collectively, our findings show that cellular communication of exosomal TNF-α from hepatocellular cancer cells (Huh-7) regulates osteoclast differentiation through NF-κB/CTSK/TRAP expressions. Thus, exosomal TNF-α might act as an important therapeutic target to prevent hepatocellular cancer mediated pathological bone disease.
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Affiliation(s)
- Ching-Hao Li
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
| | - Kalaiselvi Palanisamy
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
| | - Xin Li
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
| | - Shao-Hua Yu
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan.,Department of Emergency Medicine, China Medical University Hospital, Taichung, Taiwan
| | - I-Kuan Wang
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan.,Division of Nephrology, China Medical University Hospital, Taichung, Taiwan.,Department of Internal Medicine, China Medical University, Taichung, Taiwan
| | - Chi-Yuan Li
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan.,Department of Anesthesiology, China Medical University Hospital, Taichung, Taiwan
| | - Kuo-Ting Sun
- Department of Pediatric Dentistry, China Medical University Hospital, Taichung, Taiwan.,School of Dentistry, China Medical University, Taichung, Taiwan
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Yu S, Palanisamy K, Sun K, Li X, Wang Y, Lin F, Chen K, Wang I, Yu T, Li C. Human antigen R regulates hypoxia-induced mitophagy in renal tubular cells through PARKIN/BNIP3L expressions. J Cell Mol Med 2021; 25:2691-2702. [PMID: 33496385 PMCID: PMC7933924 DOI: 10.1111/jcmm.16301] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 10/22/2020] [Revised: 12/29/2020] [Accepted: 01/05/2021] [Indexed: 12/27/2022] Open
Abstract
Mitochondrial dysfunction contributes to the pathophysiology of acute kidney injury (AKI). Mitophagy selectively degrades damaged mitochondria and thereby regulates cellular homeostasis. RNA-binding proteins (RBPs) regulate RNA processing at multiple levels and thereby control cellular function. In this study, we aimed to understand the role of human antigen R (HuR) in hypoxia-induced mitophagy process in the renal tubular cells. Mitophagy marker expressions (PARKIN, p-PARKIN, PINK1, BNIP3L, BNIP3, LC3) were determined by western blot analysis. Immunofluorescence studies were performed to analyze mitophagosome, mitolysosome, co-localization of p-PARKIN/TOMM20 and BNIP3L/TOMM20. HuR-mediated regulation of PARKIN/BNIP3L expressions was determined by RNA-immunoprecipitation analysis and RNA stability experiments. Hypoxia induced mitochondrial dysfunction by increased ROS, decline in membrane potential and activated mitophagy through up-regulated PARKIN, PINK1, BNIP3 and BNIP3L expressions. HuR knockdown studies revealed that HuR regulates hypoxia-induced mitophagosome and mitolysosome formation. HuR was significantly bound to PARKIN and BNIP3L mRNA under hypoxia and thereby up-regulated their expressions through mRNA stability. Altogether, our data highlight the importance of HuR in mitophagy regulation through up-regulating PARKIN/BNIP3L expressions in renal tubular cells.
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Affiliation(s)
- Shao‐Hua Yu
- Graduate Institute of Biomedical SciencesChina Medical UniversityTaichungTaiwan
- Department of Emergency MedicineChina Medical University HospitalTaichungTaiwan
| | | | - Kuo‐Ting Sun
- Department of Pediatric DentistryChina Medical University HospitalTaichungTaiwan
- School of Dentistry, College of DentistryChina Medical UniversityTaichungTaiwan
| | - Xin Li
- Graduate Institute of Biomedical SciencesChina Medical UniversityTaichungTaiwan
| | - Yao‐Ming Wang
- Department of RadiologyTaichung Tzu Chi HospitalBuddhist Tzu Chi Medical FoundationTaichungTaiwan
| | - Feng‐Yen Lin
- Department of Internal MedicineSchool of MedicineCollege of MedicineTaipei Medical UniversityTaipeiTaiwan
- Division of Cardiology and Cardiovascular Research CenterTaipei Medical University HospitalTaipeiTaiwan
| | - Kuen‐Bao Chen
- School of MedicineChina Medical UniversityTaichungTaiwan
- Department of AnesthesiologyChina Medical University HospitalTaichungTaiwan
| | - I‐Kuan Wang
- Graduate Institute of Biomedical SciencesChina Medical UniversityTaichungTaiwan
- School of MedicineChina Medical UniversityTaichungTaiwan
- Division of NephrologyChina Medical University HospitalTaichungTaiwan
| | - Tung‐Min Yu
- Graduate Institute of Biomedical SciencesChina Medical UniversityTaichungTaiwan
- Division of NephrologyDepartment of Internal MedicineTaichung Veterans General HospitalTaichungTaiwan
| | - Chi‐Yuan Li
- Graduate Institute of Biomedical SciencesChina Medical UniversityTaichungTaiwan
- Department of AnesthesiologyChina Medical University HospitalTaichungTaiwan
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Sun KT, Shen TC, Chen SC, Chang CL, Li CH, Li X, Palanisamy K, Hsia NY, Chang WS, Tsai CW, Bau DT, Li CY. Periodontitis and the subsequent risk of glaucoma: results from the real-world practice. Sci Rep 2020; 10:17568. [PMID: 33067540 PMCID: PMC7568564 DOI: 10.1038/s41598-020-74589-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 07/09/2020] [Indexed: 11/29/2022] Open
Abstract
Periodontitis is a multifactorial inflammatory disease that can cause tooth loss and contribute to systemic inflammation. It is suggested that periodontitis may be associated with the development of glaucoma. Based on data from Taiwan’s National Health Insurance Research Database, a retrospective cohort study was conducted to investigate the risk of developing glaucoma in patients with periodontitis. The periodontitis cohort consisted of newly diagnosed adult patients (n = 194,090, minimum age = 20 years) between 2000 and 2012. The comparison group included age-, gender-, and diagnosis date-matched people without periodontitis (n = 194,090, minimum age = 20 years). Incident glaucoma was monitored until the end of 2013. Hazard ratios (HRs) with confidence intervals (CIs) were established based on the Cox proportional hazard models. The risk of developing glaucoma was higher in patients with periodontitis than those without periodontitis (31.2 vs. 23.3 patients per 10,000 person-years, with an adjusted HR of 1.26 [95% CI 1.21–1.32]). A high risk was evident even after stratifying by age (adjusted HRs = 1.34 [1.26–1.44] for ages 20–49, 1.24 [1.13–1.36] for ages ≥ 65, and 1.20 [1.12–1.29] for ages 50–64 years), sex (adjusted HRs = 1.33 [1.24–1.41] and 1.21 [1.14–1.28] for men and women, respectively), presence of comorbidity (adjusted HRs = 1.38 [1.29–1.47] and 1.18 [1.12–1.25] for without and with comorbidity, respectively), and corticosteroid use (adjusted HRs = 1.27 [1.21–1.33] and 1.21 [1.08–1.35] for without and with corticosteroid use, respectively). Specifically, patients with periodontitis exhibited a significantly high risk of primary open-angle glaucoma (adjusted HR = 1.31 [1.21–1.32]) but not for primary closed-angle glaucoma (adjusted HR = 1.05 [0.94–1.17]). People with periodontitis are at a greater risk of glaucoma than individuals without periodontitis. Ocular health should be emphasized for such patients, and the underlying mechanisms need further investigation.
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Affiliation(s)
- Kuo-Ting Sun
- School of Dentistry, China Medical University, Taichung, Taiwan.,Department of Pediatric Dentistry, China Medical University Hospital, Taichung, Taiwan
| | - Te-Chun Shen
- Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan.,School of Medicine, China Medical University, Taichung, Taiwan
| | - Shih-Chueh Chen
- Department of Endocrinology, Cheng Ching Hospital, Taichung, Taiwan
| | - Chia-Ling Chang
- School of Medicine, China Medical University, Taichung, Taiwan.,Management Office for Health Data, China Medical University Hospital, Taichung, Taiwan
| | - Ching-Hao Li
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
| | - Xin Li
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
| | - Kalaiselvi Palanisamy
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
| | - Ning-Yi Hsia
- Department of Ophthalmology, China Medical University Hospital, No. 2 Yude Road, Taichung, 404, Taiwan.
| | - Wen-Shin Chang
- Terry Fox Cancer Research Laboratory, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Chia-Wen Tsai
- Terry Fox Cancer Research Laboratory, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Da-Tian Bau
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan.,Terry Fox Cancer Research Laboratory, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Chi-Yuan Li
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
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6
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Palanisamy K, Sanjiv Raj K, Bhuvaneswari S, Rajasekaran M, Subramanian VK. The effect of DTPA on calcium carbonate scale deposition on copper and aluminium surfaces. Heliyon 2020; 6:e03506. [PMID: 32154426 PMCID: PMC7052400 DOI: 10.1016/j.heliyon.2020.e03506] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 11/22/2019] [Accepted: 02/24/2020] [Indexed: 11/29/2022] Open
Abstract
Calcium carbonate (CaCO3) scale inhibition by Diethylenetriaminepentaacetic acid (DTPA) on copper and aluminium metal surfaces was studied at 60 and 100 °C. The samples were characterized using X-ray diffraction (XRD), Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). The results revealed a novel pot like morphology for calcite which was resulted from the transformation of dumbbell morphology. The pot like morphology exposed the possibility of hollow structures for other polymorphs and is resulted from the breaking apart of the dumbbell structures at the middle, followed by fluffing of the separated parts.
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Affiliation(s)
- K Palanisamy
- Dept. of Chemistry, Thiru. A. Govindasamy Govt. Arts College, Tindivanam, 604001, Tamailnadu, India.,Dept. of Chemistry, Annamalai University, Annamalainagar, 608 002, Tamilnadu, India
| | - K Sanjiv Raj
- Dept. of Chemistry, Annamalai University, Annamalainagar, 608 002, Tamilnadu, India
| | - S Bhuvaneswari
- Dept. of Chemistry, Thiru. A. Govindasamy Govt. Arts College, Tindivanam, 604001, Tamailnadu, India.,Research and Development Centre, Bharathiar University, Coimbatore, 641046, India
| | - M Rajasekaran
- Research and Development Centre, Bharathiar University, Coimbatore, 641046, India.,Dept. of Physics, Thiru. A. Govindasamy Govt. Arts College, Tindivanam, 604001, Tamailnadu, India
| | - V K Subramanian
- Dept. of Chemistry, Annamalai University, Annamalainagar, 608 002, Tamilnadu, India.,Dept. of Chemistry, Periyar Govt. Arts College, Cuddalore, 607001, Tamilnadu, India
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7
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Wang IK, Palanisamy K, Sun KT, Yu SH, Yu TM, Li CH, Lin FY, Chou AK, Wang GJ, Chen KB, Li CY. The functional interplay of lncRNA EGOT and HuR regulates hypoxia-induced autophagy in renal tubular cells. J Cell Biochem 2020; 121:4522-4534. [PMID: 32030803 DOI: 10.1002/jcb.29669] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 09/18/2019] [Accepted: 01/16/2020] [Indexed: 12/20/2022]
Abstract
Autophagy, an important cellular homeostatic mechanism regulates cell survival under stress and protects against acute kidney injury. However, the role of long noncoding RNA (lncRNA) in autophagy regulation in renal tubular cells (HK-2) is unclear. The study was aimed to understand the importance of lncRNA in hypoxia-induced autophagy in HK-2 cells. LncRNA eosinophil granule ontogeny transcript (EGOT) was identified as autophagy-associated lncRNA under hypoxia. The lncRNA EGOT expression was significantly downregulated in renal tubular cells during hypoxia-induced autophagy. Gain- and loss-of-EGOT functional studies revealed that EGOT overexpression reduced autophagy by downregulation of ATG7, ATG16L1, LC3II expressions and LC 3 puncta while EGOT knockdown reversed the suppression of autophagy. Importantly, RNA-binding protein, (ELAVL1)/Hu antigen R (HuR) binds and stabilizes the EGOT expression under normoxia and ATG7/16L1 expressions under hypoxia. Furthermore, HuR mediated stabilization of ATG7/16L1 expressions under hypoxia causes a decline in EGOT levels and thereby promotes autophagy. Altogether, the study first reveals the functional interplay of lncRNA EGOT and HuR on the posttranscriptional regulation of the ATG7/16L1 expressions. Thus, the HuR/EGOT/ATG7/16L1 axis is crucial for hypoxia-induced autophagy in renal tubular cells.
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Affiliation(s)
- I-Kuan Wang
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan.,Division of Nephrology, China Medical University Hospital, Taichung, Taiwan.,Department of Internal Medicine, College of Medicine, China Medical University, Taichung, Taiwan
| | - Kalaiselvi Palanisamy
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
| | - Kuo-Ting Sun
- Department of Pediatric Dentistry, China Medical University Hospital, Taichung, Taiwan.,School of Dentistry, China Medical University, Taichung, Taiwan
| | - Shao-Hua Yu
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan.,Department of Emergency Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Tung-Min Yu
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan.,Division of Nephrology, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Ching-Hao Li
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
| | - Feng-Yen Lin
- Department of Internal Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Division of Cardiology and Cardiovascular Research Center, Taipei Medical University Hospital, Taipei, Taiwan
| | - An-Kuo Chou
- School of Medicine, China Medical University, Taichung, Taiwan.,Department of Anesthesiology, China Medical University Hospital, Taichung, Taiwan
| | - Guei-Jane Wang
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan.,Department of Medical Research, China Medical University Hospital, Taichung, Taiwan.,Department of Health and Nutrition Biotechnology, Asia University, Taichung, Taiwan
| | - Kuen-Bao Chen
- School of Medicine, China Medical University, Taichung, Taiwan.,Department of Anesthesiology, China Medical University Hospital, Taichung, Taiwan
| | - Chi-Yuan Li
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan.,Department of Anesthesiology, China Medical University Hospital, Taichung, Taiwan
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8
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Palanisamy K, Mukesh Kumar PC. Experimental investigation on convective heat transfer and pressure drop of cone helically coiled tube heat exchanger using carbon nanotubes/water nanofluids. Heliyon 2019; 5:e01705. [PMID: 31193520 PMCID: PMC6536441 DOI: 10.1016/j.heliyon.2019.e01705] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [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: 11/22/2018] [Revised: 04/09/2019] [Accepted: 05/08/2019] [Indexed: 11/27/2022] Open
Abstract
This study investigates the heat transfer and the pressure drop of cone helically coiled tube heat exchanger using (Multi wall carbon nano tube) MWCNT/water nanofluids. The MWCNT/water nanofluids at 0.1%, 0.3%, and 0.5% particle volume concentrations were prepared with the addition of surfactant by using the two-step method. The tests were conducted under the turbulent flow in the Dean number range of 2200 < De < 4200. The experiments were conducted with experimental Nusselt number is 28%, 52% and 68% higher than water for the nanofluids volume concentration of 0.1%, 0.3% and 0.5% respectively. It is found that the pressure drop of 0.1%, 0.3% and 0.5% nanofluids are found to be 16%, 30% and 42% respectively higher than water. It is studied that the prepared MWCNT/water nanofluids show good stability even after 45 days of preparation and there is no considerable deposit of nanotubes on the tube inner wall. It is also studied that there is no immediate risk of handling MWCNT and studied that there is no significant erosion of coiled tube inner wall surface even after several test runs. Therefore the MWCNT/water nanofluids are the alternate heat transfer fluids for traditional fluids in the cone helically coiled tube heat exchanger to improve the heat transfer with considerable pressure drop.
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Affiliation(s)
- K Palanisamy
- M. Kumarasamy College of Engineering, Karur, 639113, Tamilnadu, India
| | - P C Mukesh Kumar
- University College of Engineering Dindugl, 64223, Tamilnadu, India
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9
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Palanisamy K, Tsai TH, Yu TM, Sun KT, Yu SH, Lin FY, Wang IK, Li CY. RNA-binding protein, human antigen R regulates hypoxia-induced autophagy by targeting ATG7/ATG16L1 expressions and autophagosome formation. J Cell Physiol 2019; 234:7448-7458. [PMID: 30317574 DOI: 10.1002/jcp.27502] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 09/07/2018] [Indexed: 01/01/2023]
Abstract
Autophagy, a prosurvival mechanism offers a protective role during acute kidney injury. We show novel findings on the functional role of RNA binding protein, HuR during hypoxia-induced autophagy in renal proximal tubular cells-2 (HK-2). HK-2 cells showed upregulated expressions of HuR and autophagy-related proteins such as autophagy related 7 (ATG7), autophagy related 16 like 1 (ATG16L1), and LC3II under hypoxia. Increased autophagosome formation was visualized as LC3 puncta in hypoxic cells. Further, short hairpin-RNA-mediated loss of HuR function in HK-2 cells significantly decreased ATG7 and ATG16L1 protein expressions. Bioinformatics prediction revealed HuR motif binding on the coding region of ATG7 and AU-rich element at 3'UTR ATG16L1 messnger RNA (mRNA). The RNA immunoprecipitation study showed that HuR was predominantly associated with ATG7 and ATG16L1 mRNAs under hypoxia. In addition, HuR enhanced autophagosome formation by regulating LC3II expressions. These results show that HuR regulates ATG7 and ATG16L1 expressions and thereby mediate autophagy in HK-2 cells. Importantly, HuR knockdown cells underwent apoptosis during hypoxia as observed through the terminal deoxynucleotidyl transferase dUTP nick end labeling assay. Collectively, these findings show the crucial role of HuR under hypoxia by regulating autophagy and suppressing apoptosis in renal tubular cells.
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Affiliation(s)
- Kalaiselvi Palanisamy
- Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan
| | - Tsung-Hsun Tsai
- Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan
- Division of Urology, Department of Surgery, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung, Taiwan
| | - Tung-Min Yu
- Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan
- Division of Nephrology, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Kuo-Ting Sun
- Department of Pediatric Dentistry, China Medical University Hospital, Taichung, Taiwan
- School of Dentistry, College of Dentistry, China Medical University, Taichung, Taiwan
| | - Shao-Hua Yu
- Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan
- Department of Emergency Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Feng-Yen Lin
- Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Division of Cardiology and Cardiovascular Research Center, Taipei Medical University Hospital, Taipei, Taiwan
| | - I-Kuan Wang
- Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan
- Division of Nephrology, China Medical University Hospital, Taichung, Taiwan
- Department of Internal Medicine, China Medical University College of Medicine, Taichung, Taiwan
| | - Chi-Yuan Li
- Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan
- Department of Anesthesiology, China Medical University Hospital, Taichung, Taiwan
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10
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Poon KS, Palanisamy K, Chang SS, Sun KT, Chen KB, Li PC, Lin TC, Li CY. Plasma exosomal miR-223 expression regulates inflammatory responses during cardiac surgery with cardiopulmonary bypass. Sci Rep 2017; 7:10807. [PMID: 28883474 PMCID: PMC5589826 DOI: 10.1038/s41598-017-09709-w] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 07/28/2017] [Indexed: 01/24/2023] Open
Abstract
Cardiopulmonary bypass (CPB) induces inflammatory responses, and effective endogenous homeostasis is important for preventing systemic inflammation. We assessed whether plasma exosomal microRNAs in patients undergoing cardiac surgery with CPB are involved in the regulation of inflammatory responses. Plasma samples were isolated from CPB patients (n = 21) at 5 specified time points: pre-surgery, pre-CPB and 2 hours (h), 4 h and 24 h after CPB began. Plasma TNF-α expression was increased after CPB began compared to that in the pre-surgery samples. Plasma IL-8 and IL-6 expression peaked at 4 h after CPB began but was downregulated at 24 h. The number of plasma exosomes collected at 2 h (55.1 ± 8.3%), 4 h (63.8 ± 10.1%) and 24 h (83.5 ± 3.72%) after CPB began was significantly increased compared to that in the pre-CPB samples (42.8 ± 0.11%). These exosomes had a predominantly parental cellular origin from RBCs and platelets. Additionally, the plasma exosomal miR-223 levels were significantly increased after CPB began compared to those in the pre-CPB samples. Further, exosomal miR-223 from plasma collected after CPB began downregulated IL-6 and NLRP3 expression in the monocytes. Here, we present the novel findings that increased plasma exosomal miR-223 expression during cardiac surgery with CPB might play homeostatic roles in downregulating inflammatory responses through intercellular communication.
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Affiliation(s)
- Kin-Shing Poon
- Department of Anesthesiology, China Medical University and Hospital, Taichung, Taiwan
| | - Kalaiselvi Palanisamy
- Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan
| | - Shih-Sheng Chang
- Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan.,Division of Cardiology, Department of Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Kuo-Ting Sun
- Department of Pediatric Dentistry, China Medical University Hospital, Taichung, Taiwan.,School of Dentistry, China Medical University, Taichung, Taiwan
| | - Kuen-Bao Chen
- Department of Anesthesiology, China Medical University and Hospital, Taichung, Taiwan
| | - Ping-Chun Li
- Department of Surgery, China Medical University Hospital, Taichung, Taiwan
| | - Tso-Chou Lin
- Department of Anesthesiology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Chi-Yuan Li
- Department of Anesthesiology, China Medical University and Hospital, Taichung, Taiwan. .,Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan.
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11
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Sun KT, Huang YN, Palanisamy K, Chang SS, Wang IK, Wu KH, Chen P, Peng CT, Li CY. Reciprocal regulation of γ-globin expression by exo-miRNAs: Relevance to γ-globin silencing in β-thalassemia major. Sci Rep 2017; 7:202. [PMID: 28303002 PMCID: PMC5427890 DOI: 10.1038/s41598-017-00150-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Accepted: 02/09/2017] [Indexed: 12/30/2022] Open
Abstract
Induction of fetal hemoglobin (HbF) is a promising strategy in the treatment of β-thalassemia major (β-TM). The present study shows that plasma exosomal miRNAs (exo-miRs) are involved in γ-globin regulation. Exosomes shuttle miRNAs and mediate cell-cell communication. MiRNAs are regulators of biological processes through post-transcriptional targeting. Compared to HD (Healthy Donor), β-TM patients showed increased levels of plasma exosomes and the majority of exosomes had cellular origin from CD34+ cells. Further, HD and β-TM exosomes showed differential miRNA expressions. Among them, deregulated miR-223-3p and miR-138-5p in β-TM exosomes and HD had specific targets for γ-globin regulator and repressor respectively. Functional studies in K562 cells showed that HD exosomes and miR-138-5p regulated γ-globin expression by targeting BCL11A. β-TM exosomes and miR-223-3p down regulated γ-globin expression through LMO2 targeting. Importantly, miR-223-3p targeting through sponge repression resulted in γ-globin activation. Further, hnRNPA1 bound to stem-loop structure of pre-miR-223 and we found that hnRNPA1 knockdown or mutagenesis at miR-223-3p stem-loop sequence resulted in less mature exo-miR-223-3p levels. Altogether, the study shows for the first time on the important clinical evidence that differentially expressed exo-miRNAs reciprocally control γ-globin expressions. Further, the hnRNPA1-exo-miR-223-LMO2 axis may be critical to γ-globin silencing in β-TM.
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Affiliation(s)
- Kuo-Ting Sun
- Graduate Institute of Clinical Medical Science, China Medical University, Taichung, 40402, Taiwan.,Department of Pediatric Dentistry, China Medical University Hospital, Taichung, 40402, Taiwan.,School of Dentistry, China Medical University, Taichung, 40402, Taiwan
| | - Yu-Nan Huang
- Graduate Institute of Clinical Medical Science, China Medical University, Taichung, 40402, Taiwan.,Department of Life Sciences, National Chung-Hsing University, Taichung, 40402, Taiwan.,Department of Hematology-oncology, Children's Hospital of China Medical University, Taichung, 40402, Taiwan
| | - Kalaiselvi Palanisamy
- Graduate Institute of Clinical Medical Science, China Medical University, Taichung, 40402, Taiwan
| | - Shih-Sheng Chang
- Graduate Institute of Clinical Medical Science, China Medical University, Taichung, 40402, Taiwan.,Division of Cardiology, Department of Medicine, China Medical University Hospital, Taichung, 40402, Taiwan
| | - I-Kuan Wang
- Graduate Institute of Clinical Medical Science, China Medical University, Taichung, 40402, Taiwan.,Division of Nephrology, Department of Medicine, China Medical University Hospital, Taichung, 40402, Taiwan
| | - Kang-Hsi Wu
- Department of Hematology-oncology, Children's Hospital of China Medical University, Taichung, 40402, Taiwan
| | - Ping Chen
- Thalassemia Research Institute, The First Affiliated Hospital, Guangxi Medical University, Guangxi Zhuang Autonomous Region, 530021, China
| | - Ching-Tien Peng
- Department of Hematology-oncology, Children's Hospital of China Medical University, Taichung, 40402, Taiwan.
| | - Chi-Yuan Li
- Graduate Institute of Clinical Medical Science, China Medical University, Taichung, 40402, Taiwan. .,Department of Anesthesiology, China Medical University Hospital, Taichung, 40402, Taiwan.
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Kommavarapu P, Maruthapillai A, Palanisamy K. Preparation, Characterization and Evaluation of Elvitegravir-Loaded Solid Lipid Nanoparticles for Enhanced Solubility and Dissolution Rate. TROP J PHARM RES 2015. [DOI: 10.4314/tjpr.v14i9.2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Purpose: To enhance the aqueous solubility and dissolution rate of elvitegravir (EVG) by formulating the drug as solid lipid nanoparticles (SLNs) using solvent injection method.Methods: EVG-loaded SLNs were prepared by solvent injection method. Four different formulations of SLN were prepared using gelucire - 44/14 as lipid core in ethanol, soya lecithin as emulsifier, and polysorbate 80 as surfactant in the aqueous phase. The SLNs were characterized for various physical properties, including particle size, zeta potential, polydispersity, release profile and entrapment efficiency.Results: The yield of SLNs was in the range 151.0 ± 2.4 to 199.1 ± 2.7 nm. Significant changes were observed in mean particle size (nm), Z - potential (mV) and polydispersity index (PDI) of the SLNs by varying the concentration of cryoprotectant. EVG – SLNs demonstrated a 800 – 1030-fold enhancement in aqueous solubility compared with plain EVG. The dissolution efficiency (DE) for SLNs was > 63 % in all cases and increased up to 83 % with increasing lipid load.Conclusion: Successful preparation and characterization of elvitegravir–loaded solid lipid nanoparticles by solvent injection method has been accomplished in this study.Keywords: Elvitegravir, Solid lipid nanoparticles, Cryoprotectant, Lipid load, Entrapment efficiency
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Palanisamy K, Krishnaswamy R, Paramasivan P, Chih-Yang H, Vishwanadha VP. Eicosapentaenoic acid prevents TCDD-induced oxidative stress and inflammatory response by modulating MAP kinases and redox-sensitive transcription factors. Br J Pharmacol 2015; 172:4726-40. [PMID: 26177858 DOI: 10.1111/bph.13247] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2015] [Revised: 06/01/2015] [Accepted: 07/01/2015] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND AND PURPOSE Oxidative stress and subsequent activation of inflammatory responses is a widely accepted consequence of exposure to environmental toxins. TCDD (2,3,7,8-tetrachlorodibenzo-p-dioxin), a well-known environmental toxin, exerts its toxicity through many signalling mechanisms, with liver being the principal organ affected. However, an effective antidote to TCDD-induced toxicity is unknown. The present study evaluated the effect of eicosapentaenoic acid (EPA), an n3 fatty acid, on TCDD-induced toxicity. EXPERIMENTAL APPROACH In cultures of HepG2 cells, the EPA/AA ratio was determined using gas chromatography, oxidative stress and inflammatory responses through reactive oxygen species (ROS) levels, antioxidant status, [Ca(2+) ]i , nuclear migration of two redox-sensitive transcription factors, NF-κB p65 and Nrf-2, expression of MAP kinase (p-Erk, p-p38), NF-κB p65, COX-2 and Nrf-2. Cellular changes in ΔΨm, acidic vesicular organelle formation, cell cycle analysis and scanning electron microscopy analysis were performed. KEY RESULTS EPA offered significant cytoprotection by increasing EPA/AA ratios in cell membranes, inhibiting ROS generation, enhancing antioxidant status and modulating nuclear translocation of redox-sensitive transcription factors (NF-κB p65 and Nrf-2) and expression of NF-κB p65, COX-2 and Nrf-2. Furthermore, TCDD-induced upstream events of MAPK phosphorylation, the increase in [Ca(2+) ]i levels and cell surface changes in microvilli were significantly inhibited by EPA. EPA treatment maintained ΔΨm and prevented formation of acidic vesicular organelles. CONCLUSION AND IMPLICATIONS The present study demonstrates for the first time some underlying molecular mechanisms of cytoprotection exerted by EPA against TCDD-induced oxidative stress and inflammatory responses.
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Affiliation(s)
- Kalaiselvi Palanisamy
- Department of Biotechnology, School of Biotechnology and Genetic Engineering, Bharathiar University, Coimbatore, Tamil Nadu, India.,Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan
| | - Rajashree Krishnaswamy
- Department of Biotechnology, Kumaraguru College of Technology, Coimbatore, Tamil Nadu, India
| | - Poornima Paramasivan
- Department of Biotechnology, School of Biotechnology and Genetic Engineering, Bharathiar University, Coimbatore, Tamil Nadu, India
| | - Huang Chih-Yang
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan.,Graduate Institute of Chinese Medical Science, China Medical University, Taichung, Taiwan.,Department of Health and Nutrition Biotechnology, Asia University, Taichung, Taiwan
| | - Vijaya Padma Vishwanadha
- Department of Biotechnology, School of Biotechnology and Genetic Engineering, Bharathiar University, Coimbatore, Tamil Nadu, India.,Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan.,Department of Biotechnology, Asia University, Taichung, Taiwan
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Gopi SP, Subramanian V, Palanisamy K. Synergistic Effect of EDTA and HEDP on the Crystal Growth, Polymorphism, and Morphology of CaCO3. Ind Eng Chem Res 2015. [DOI: 10.1021/ie5034039] [Citation(s) in RCA: 20] [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: 11/28/2022]
Affiliation(s)
- Shanmukha Prasad Gopi
- Department of Chemistry, Annamalai University, Annamalainagar-608002, Tamilnadu, India
| | - V.K. Subramanian
- Department of Chemistry, Annamalai University, Annamalainagar-608002, Tamilnadu, India
| | - K. Palanisamy
- Department of Chemistry, Annamalai University, Annamalainagar-608002, Tamilnadu, India
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Lavanya K, Kannan P, Palanisamy K, Natesan M. Comparison Study of Volatile Corrosion Inhibitors in Steam And Cl2 Gas Environment on Mild Steel. Arab J Sci Eng 2014. [DOI: 10.1007/s13369-013-0844-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Palanisamy K, Murugappan M, Yaacob S. Multiple Physiological Signal-Based Human Stress Identification Using Non-Linear Classifiers. ACTA ACUST UNITED AC 2013. [DOI: 10.5755/j01.eee.19.7.2232] [Citation(s) in RCA: 22] [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: 11/27/2022]
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Palanisamy K, Idlan MK, Saifudin N. Preliminary evaluation of the effectiveness of moisture removal and energy usage in pretreatment module of waste cooking oil for biodiesel production. ACTA ACUST UNITED AC 2013. [DOI: 10.1088/1755-1315/16/1/012053] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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