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Keum BR, Yeo I, Koo Y, Han W, Choi SC, Kim GH, Han JK. Transmembrane protein 150b attenuates BMP signaling in the Xenopus organizer. J Cell Physiol 2023; 238:1850-1866. [PMID: 37435758 DOI: 10.1002/jcp.31059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 05/03/2023] [Accepted: 05/06/2023] [Indexed: 07/13/2023]
Abstract
The vertebrate organizer is a specified embryonic tissue that regulates dorsoventral patterning and axis formation. Although numerous cellular signaling pathways have been identified as regulators of the organizer's dynamic functions, the process remains incompletely understood, and as-yet unknown pathways remain to be explored for sophisticated mechanistic understanding of the vertebrate organizer. To identify new potential key factors of the organizer, we performed complementary DNA (cDNA) microarray screening using organizer-mimicking Xenopus laevis tissue. This analysis yielded a list of prospective organizer genes, and we determined the role of six-transmembrane domain containing transmembrane protein 150b (Tmem150b) in organizer function. Tmem150b was expressed in the organizer region and induced by Activin/Nodal signaling. In X. laevis, Tmem150b knockdown resulted in head defects and a shortened body axis. Moreover, Tmem150b negatively regulated bone morphogenetic protein (BMP) signaling, likely via physical interaction with activin receptor-like kinase 2 (ALK2). These findings demonstrated that Tmem150b functions as a novel membrane regulatory factor of BMP signaling with antagonistic effects, contributing to the understanding of regulatory molecular mechanisms of organizer axis function. Investigation of additional candidate genes identified in the cDNA microarray analysis could further delineate the genetic networks of the organizer during vertebrate embryogenesis.
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Affiliation(s)
- Byeong-Rak Keum
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Gyeongbuk, Korea
- Research Center for drug development, CYPHARMA, Daejeon, Korea
| | - Inchul Yeo
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Gyeongbuk, Korea
| | - Youngmu Koo
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Gyeongbuk, Korea
| | - Wonhee Han
- Department of Neurology, F. M. Kirby Neurobiology Center, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Sun-Cheol Choi
- Department of Biomedical Sciences, University of Ulsan College of Medicine, Seoul, Korea
| | - Gun-Hwa Kim
- Research Center for drug development, CYPHARMA, Daejeon, Korea
- Research Center for Bioconvergence Analysis, Korea Basic Science Institute, Cheongju, Korea
| | - Jin-Kwan Han
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Gyeongbuk, Korea
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2
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Etienne EE, Nunna BB, Talukder N, Wang Y, Lee ES. COVID-19 Biomarkers and Advanced Sensing Technologies for Point-of-Care (POC) Diagnosis. Bioengineering (Basel) 2021; 8:98. [PMID: 34356205 PMCID: PMC8301167 DOI: 10.3390/bioengineering8070098] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/23/2021] [Accepted: 06/29/2021] [Indexed: 02/06/2023] Open
Abstract
COVID-19, also known as SARS-CoV-2 is a novel, respiratory virus currently plaguing humanity. Genetically, at its core, it is a single-strand positive-sense RNA virus. It is a beta-type Coronavirus and is distinct in its structure and binding mechanism compared to other types of coronaviruses. Testing for the virus remains a challenge due to the small market available for at-home detection. Currently, there are three main types of tests for biomarker detection: viral, antigen and antibody. Reverse Transcription-Polymerase Chain Reaction (RT-PCR) remains the gold standard for viral testing. However, the lack of quantitative detection and turnaround time for results are drawbacks. This manuscript focuses on recent advances in COVID-19 detection that have lower limits of detection and faster response times than RT-PCR testing. The advancements in sensing platforms have amplified the detection levels and provided real-time results for SARS-CoV-2 spike protein detection with limits as low as 1 fg/mL in the Graphene Field Effect Transistor (FET) sensor. Additionally, using multiple biomarkers, detection levels can achieve a specificity and sensitivity level comparable to that of PCR testing. Proper biomarker selection coupled with nano sensing detection platforms are key in the widespread use of Point of Care (POC) diagnosis in COVID-19 detection.
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Affiliation(s)
- Ernst Emmanuel Etienne
- Advanced Energy Systems and Microdevices Laboratory, Department of Mechanical and Industrial Engineering, New Jersey Institute of Technology, Newark, NJ 07102, USA; (E.E.E.); (B.B.N.); (N.T.); (Y.W.)
| | - Bharath Babu Nunna
- Advanced Energy Systems and Microdevices Laboratory, Department of Mechanical and Industrial Engineering, New Jersey Institute of Technology, Newark, NJ 07102, USA; (E.E.E.); (B.B.N.); (N.T.); (Y.W.)
- Division of Engineering in Medicine, Department of Medicine, Brigham, and Women’s Hospital, Harvard Medical School, Harvard University, Cambridge, MA 02139, USA
| | - Niladri Talukder
- Advanced Energy Systems and Microdevices Laboratory, Department of Mechanical and Industrial Engineering, New Jersey Institute of Technology, Newark, NJ 07102, USA; (E.E.E.); (B.B.N.); (N.T.); (Y.W.)
| | - Yudong Wang
- Advanced Energy Systems and Microdevices Laboratory, Department of Mechanical and Industrial Engineering, New Jersey Institute of Technology, Newark, NJ 07102, USA; (E.E.E.); (B.B.N.); (N.T.); (Y.W.)
| | - Eon Soo Lee
- Advanced Energy Systems and Microdevices Laboratory, Department of Mechanical and Industrial Engineering, New Jersey Institute of Technology, Newark, NJ 07102, USA; (E.E.E.); (B.B.N.); (N.T.); (Y.W.)
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3
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Warkad SD, Nimse SB, Song KS, Kim T. HCV Detection, Discrimination, and Genotyping Technologies. SENSORS (BASEL, SWITZERLAND) 2018; 18:E3423. [PMID: 30322029 PMCID: PMC6210034 DOI: 10.3390/s18103423] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 10/05/2018] [Accepted: 10/10/2018] [Indexed: 02/06/2023]
Abstract
According to the World Health Organization (WHO), 71 million people were living with Hepatitis C virus (HCV) infection worldwide in 2015. Each year, about 399,000 HCV-infected people succumb to cirrhosis, hepatocellular carcinoma, and liver failure. Therefore, screening of HCV infection with simple, rapid, but highly sensitive and specific methods can help to curb the global burden on HCV healthcare. Apart from the determination of viral load/viral clearance, the identification of specific HCV genotype is also critical for successful treatment of hepatitis C. This critical review focuses on the technologies used for the detection, discrimination, and genotyping of HCV in clinical samples. This article also focuses on advantages and disadvantages of the reported methods used for HCV detection, quantification, and genotyping.
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Affiliation(s)
- Shrikant Dashrath Warkad
- Institute for Applied Chemistry and Department of Chemistry, Hallym University, Chuncheon 200-702, Korea.
| | - Satish Balasaheb Nimse
- Institute for Applied Chemistry and Department of Chemistry, Hallym University, Chuncheon 200-702, Korea.
| | - Keum-Soo Song
- Institute for Applied Chemistry and Department of Chemistry, Hallym University, Chuncheon 200-702, Korea.
| | - Taisun Kim
- Institute for Applied Chemistry and Department of Chemistry, Hallym University, Chuncheon 200-702, Korea.
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4
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Ma KY, He C, Wendel BS, Williams CM, Xiao J, Yang H, Jiang N. Immune Repertoire Sequencing Using Molecular Identifiers Enables Accurate Clonality Discovery and Clone Size Quantification. Front Immunol 2018; 9:33. [PMID: 29467754 PMCID: PMC5808239 DOI: 10.3389/fimmu.2018.00033] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Accepted: 01/04/2018] [Indexed: 11/13/2022] Open
Abstract
Unique molecular identifiers (MIDs) have been demonstrated to effectively improve immune repertoire sequencing (IR-seq) accuracy, especially to identify somatic hypermutations in antibody repertoire sequencing. However, evaluating the sensitivity to detect rare T cells and the degree of clonal expansion in IR-seq has been difficult due to the lack of knowledge of T cell receptor (TCR) RNA molecule copy number and a generalized approach to estimate T cell clone size from TCR RNA molecule quantification. This limited the application of TCR repertoire sequencing (TCR-seq) in clinical settings, such as detecting minimal residual disease in lymphoid malignancies after treatment, evaluating effectiveness of vaccination and assessing degree of infection. Here, we describe using an MID Clustering-based IR-Seq (MIDCIRS) method to quantitatively study TCR RNA molecule copy number and clonality in T cells. First, we demonstrated the necessity of performing MID sub-clustering to eliminate erroneous sequences. Further, we showed that MIDCIRS enables a sensitive detection of a single cell in as many as one million naïve T cells and an accurate estimation of the degree of T cell clonal expression. The demonstrated accuracy, sensitivity, and wide dynamic range of MIDCIRS TCR-seq provide foundations for future applications in both basic research and clinical settings.
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Affiliation(s)
- Ke-Yue Ma
- Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, TX, United States
| | - Chenfeng He
- Department of Biomedical Engineering, Cockrell School of Engineering, The University of Texas at Austin, Austin, TX, United States
| | - Ben S Wendel
- McKetta Department of Chemical Engineering, Cockrell School of Engineering, The University of Texas at Austin, Austin, TX, United States
| | - Chad M Williams
- Department of Biomedical Engineering, Cockrell School of Engineering, The University of Texas at Austin, Austin, TX, United States
| | - Jun Xiao
- ImmuDX, LLC, Austin, TX, United States
| | - Hui Yang
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, China.,Research Center of Special Environmental Biomechanics & Medical Engineering, Xi'an, Shaanxi, China
| | - Ning Jiang
- Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, TX, United States.,Department of Biomedical Engineering, Cockrell School of Engineering, The University of Texas at Austin, Austin, TX, United States
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5
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Wendel BS, He C, Qu M, Wu D, Hernandez SM, Ma KY, Liu EW, Xiao J, Crompton PD, Pierce SK, Ren P, Chen K, Jiang N. Accurate immune repertoire sequencing reveals malaria infection driven antibody lineage diversification in young children. Nat Commun 2017; 8:531. [PMID: 28912592 PMCID: PMC5599618 DOI: 10.1038/s41467-017-00645-x] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 07/15/2017] [Indexed: 12/03/2022] Open
Abstract
Accurately measuring antibody repertoire sequence composition in a small amount of blood is challenging yet important for understanding repertoire responses to infection and vaccination. We develop molecular identifier clustering-based immune repertoire sequencing (MIDCIRS) and use it to study age-related antibody repertoire development and diversification before and during acute malaria in infants (< 12 months old) and toddlers (12-47 months old) with 4-8 ml of blood. Here, we show this accurate and high-coverage repertoire-sequencing method can use as few as 1000 naive B cells. Unexpectedly, we discover high levels of somatic hypermutation in infants as young as 3 months old. Antibody clonal lineage analysis reveals that somatic hypermutation levels are increased in both infants and toddlers upon infection, and memory B cells isolated from individuals who previously experienced malaria continue to induce somatic hypermutations upon malaria rechallenge. These results highlight the potential of antibody repertoire diversification in infants and toddlers.Somatic hypermutation of antibodies can occur in infants but are difficult to track. Here the authors present a new method called MIDCIRS for deep quantitative repertoire sequencing with few cells, and show infants as young as 3 months can expand antibody lineage complexity in response to malaria infection.
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Affiliation(s)
- Ben S Wendel
- McKetta Department of Chemical Engineering, Cockrell School of Engineering, University of Texas at Austin, Austin, TX, 78712, USA
| | - Chenfeng He
- Department of Biomedical engineering, Cockrell School of Engineering, University of Texas at Austin, Austin, TX, 78712, USA
| | - Mingjuan Qu
- Department of Biomedical engineering, Cockrell School of Engineering, University of Texas at Austin, Austin, TX, 78712, USA
- School of Life Sciences, Ludong University, Yantai, Shandong, 264025, China
| | - Di Wu
- Department of Biomedical engineering, Cockrell School of Engineering, University of Texas at Austin, Austin, TX, 78712, USA
| | - Stefany M Hernandez
- McKetta Department of Chemical Engineering, Cockrell School of Engineering, University of Texas at Austin, Austin, TX, 78712, USA
| | - Ke-Yue Ma
- Institute for Cellular and Molecular Biology, College of Natural Sciences, University of Texas at Austin, Austin, TX, 78712, USA
| | - Eugene W Liu
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, 20852, USA
- Parasitic Diseases Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Atlanta, 30329, GA, USA
| | - Jun Xiao
- ImmuDX, LLC, Austin, TX, 78750, USA
| | - Peter D Crompton
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, 20852, USA
| | - Susan K Pierce
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, 20852, USA
| | - Pengyu Ren
- Department of Biomedical engineering, Cockrell School of Engineering, University of Texas at Austin, Austin, TX, 78712, USA
| | - Keke Chen
- Department of Computer Science and Engineering, Wright State University, Dayton, OH, 45435, USA
| | - Ning Jiang
- Department of Biomedical engineering, Cockrell School of Engineering, University of Texas at Austin, Austin, TX, 78712, USA.
- Institute for Cellular and Molecular Biology, College of Natural Sciences, University of Texas at Austin, Austin, TX, 78712, USA.
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Lee H, Kim C, Lee D, Park JH, Searson PC, Lee KH. Optical coding of fusion genes using multicolor quantum dots for prostate cancer diagnosis. Int J Nanomedicine 2017; 12:4397-4407. [PMID: 28652740 PMCID: PMC5476632 DOI: 10.2147/ijn.s138081] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Recent studies have found that prostate cancer expresses abnormal genetic markers including multiple types of TMPRSS2-ERG fusion genes. The expression level of different TMPRSS2-ERG fusion genes is correlated to pathologic variables of aggressive prostate cancer and disease progression. State-of-the-art methods for detection of TMPRSS2-ERG fusion genes include reverse transcription polymerase chain reaction (RT-PCR) with a detection limit of 1 fmol at urinary condition. RT-PCR is time consuming, costly, and inapplicable for multiplexing. Ability to identify multiple fusion genes in a single sample has become important for diagnostic and clinical purposes. There is a need for a sensitive diagnostic test to detect multiple TMPRSS2-ERG fusion genes for an early diagnosis and prognosis of prostate cancer. Here, we propose to develop an assay for prostate cancer diagnosis using oligonucleotide-functionalized quantum dot and magnetic microparticle for optical detection of rearranged TMPRSS2-ERG fusion genes at a low concentration in urine. We found that our assay was able to identify three different types of fusion gene with a wide detection range and detection limit of 1 fmol (almost the same level of the RT-PCR result reported). Here, we show detection of multiple TMPRSS2-ERG fusion genes using color-coded oligonucleotides in cell lysate and urine.
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Affiliation(s)
- Hyojin Lee
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - Chloe Kim
- Department of Materials Science and Engineering
| | - Dongjin Lee
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.,Department of Biomedical Engineering, Korea University of Science and Technology (UST), Daejeon, Republic of Korea
| | - Jea Ho Park
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.,Department of Materials Science and Engineering
| | | | - Kwan Hyi Lee
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.,Department of Biomedical Engineering, Korea University of Science and Technology (UST), Daejeon, Republic of Korea
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7
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Heo SH, Jeong ES, Lee KS, Seo JH, Lee WK, Choi YK. Knockout of krüppel-like factor 10 suppresses hepatic cell proliferation in a partially hepatectomized mouse model. Oncol Lett 2017; 13:4843-4848. [PMID: 28599486 PMCID: PMC5453119 DOI: 10.3892/ol.2017.6044] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Accepted: 01/26/2017] [Indexed: 12/21/2022] Open
Abstract
The liver has marked regenerative capabilities, and numerous signaling pathways are involved in liver regeneration. The transforming growth factor-β (TGF-β)/Smad pathway, which is also involved in liver regeneration, regulates numerous biological processes. Krüppel-like factor 10 (KLF10) has been reported to activate the TGF-β/Smad signaling pathway; however, the exact functions of KLF10 under various pathophysiological conditions remain unclear. In the present study, the role of KLF10 in liver regeneration following partial hepatectomy (PH) was investigated using KLF10-knockout (KO) mice. KLF10-KO mice exhibited lower liver/body weight ratios and 5-bromo-2-deoxy-uridine labeling indices compared with wild-type (WT) mice, and significant differences (P=0.028) were obtained at 72 h after PH. To understand the causes of the gross and histopathological findings, the expression levels of the components of the TGF-β/Smad pathway were examined using reverse transcription-quantitative polymerase chain reaction and western blot analysis. The mRNA and protein levels of Smad3, p15, TGF-β1 and TGF-β receptor 1 were significantly increased, while those of cMyc and cyclin D1 (proliferation-associated genes) were significantly lower in the liver tissues of the KLF10-KO mice compared with those of the WT mice at 72 h post-PH. These results indicated that KLF10-KO may exhibit antiproliferative effects on liver regeneration following PH, through strengthening the TGF-β/Smad signaling pathway in a delayed manner.
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Affiliation(s)
- Seung-Ho Heo
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of Korea
- Asan Institute for Life Sciences, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
| | - Eui-Suk Jeong
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of Korea
- Laboratory Animal Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu 41061, Republic of Korea
| | - Kyoung-Sun Lee
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of Korea
- Laboratory Animal Center, Osong Medical Innovation Foundation, Chungbuk 28160, Republic of Korea
| | - Jin-Hee Seo
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of Korea
- Laboratory Animal Facility, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Republic of Korea
| | - Woon-Kyu Lee
- Laboratory of Developmental Genetics, College of Medicine, Inha University, Incheon 22212, Republic of Korea
| | - Yang-Kyu Choi
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of Korea
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8
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Chidambaram SB, Pandian A, Sekar S, Haridass S, Vijayan R, Thiyagarajan LK, Ravindran J, Balaji Raghavendran HR, Kamarul T. Sesame indicum, a nutritional supplement, elicits antiamnesic effect via cholinergic pathway in scopolamine intoxicated mice. ENVIRONMENTAL TOXICOLOGY 2016; 31:1955-1963. [PMID: 26434561 DOI: 10.1002/tox.22196] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 09/12/2015] [Accepted: 09/13/2015] [Indexed: 06/05/2023]
Abstract
PURPOSE Present study was undertaken to evaluate the antiamnesic effect of Sesamum indicum (S. indicum) seeds (standardized for sesamin, a lignan, content) in scopolamine, a muscarinic antagonist intoxicated mice. METHODS Male Swiss albino mice (18-22 g bw) were pretreated with methanolic extract of sesame seeds (MSSE) (100 and 200 mg/kg/day, p.o) for a period of 14 days. Scopolamine (0.3 mg/kg, i.p.) was injected on day 14, 45 ± 10 min after MSSE administration. Antiamnesic effect of MSSE was evaluated using step-down latency (SDL) on passive avoidance apparatus and transfer latency (TL) on an elevated plus maze. To unravel the mechanism of action, we examined the effects of MSSE on the genes such as acetyl cholinesterase (AChE), muscarinic receptor M1 subtype (mAChRM1 ), and brain derived neurotrophic factor (BDNF) expression within hippocampus of experimental mice. Further, its effects on bax and bcl-2 were also evaluated. Histopathological examination of hippocampal CA1 region was performed using cresyl violet staining. RESULTS MSSE treatment produced a significant and dose dependent increase in step down latency in passive avoidance test and decrease in transfer latency in elevated plus maze in scopolamine intoxicated injected mice. MSSE down-regulated AChE and mAChRM1 and up-regulated BDNF mRNA expression. Further, it significantly down-regulated the bax and caspase 3 and up-regulated bcl-2 expression in scopolamine intoxicated mice brains. Mice treated with MSSE showed increased neuronal counts in hippocampal CA1 region when compared with scopolamine-vehicle treated mice. CONCLUSION Sesame seeds have the ability to interact with cholinergic components involved in memory function/restoration and also an interesting candidate to be considered for future cognitive research. © 2015 Wiley Periodicals, Inc. Environ Toxicol 31: 1955-1963, 2016.
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Affiliation(s)
- Saravana Babu Chidambaram
- Centre for Toxicology and Developmental Research (CEFT), Sri Ramachandra University, Chennai, 600 116, Tamil Nadu, India
| | - Anbarasi Pandian
- Department of Biotechnology, Rajalakshmi Engineering College, Chennai, 600 116, Tamil Nadu, India
| | - Sathiya Sekar
- Centre for Toxicology and Developmental Research (CEFT), Sri Ramachandra University, Chennai, 600 116, Tamil Nadu, India
| | - Sumathy Haridass
- Centre for Toxicology and Developmental Research (CEFT), Sri Ramachandra University, Chennai, 600 116, Tamil Nadu, India
| | - Ranju Vijayan
- Centre for Toxicology and Developmental Research (CEFT), Sri Ramachandra University, Chennai, 600 116, Tamil Nadu, India
| | | | - Jayasree Ravindran
- Department of Biotechnology, Rajalakshmi Engineering College, Chennai, 600 116, Tamil Nadu, India
| | - Hanumantha Rao Balaji Raghavendran
- Tissue Engineering Group, National Orthopaedic Centre of Excellence in Research & Learning (NOCERAL), Faculty of Medicine, University of Malaya, Malaya
| | - Tunku Kamarul
- Tissue Engineering Group, National Orthopaedic Centre of Excellence in Research & Learning (NOCERAL), Faculty of Medicine, University of Malaya, Malaya
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Abstract
Sleep occurs in a wide range of animal species as a vital process for the maintenance of homeostasis, metabolic restoration, physiological regulation, and adaptive cognitive functions in the central nervous system. Long-term perturbations induced by the lack of sleep are mostly mediated by changes at the level of transcription and translation. This chapter reviews studies in humans, rodents, and flies to address the various ways by which sleep deprivation affects gene expression in the nervous system, with a focus on genes related to neuronal plasticity, brain function, and cognition. However, the effects of sleep deprivation on gene expression and the functional consequences of sleep loss are clearly not restricted to the cognitive domain but may include increased inflammation, expression of stress-related genes, general impairment of protein translation, metabolic imbalance, and thermal deregulation.
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10
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Hashimoto M, Kanda M, Ikeno K, Hayashi Y, Nakamura T, Ogawa Y, Fukumitsu H, Nomoto H, Furukawa S. Oral Administration of Royal Jelly Facilitates mRNA Expression of Glial Cell Line-Derived Neurotrophic Factor and Neurofilament H in the Hippocampus of the Adult Mouse Brain. Biosci Biotechnol Biochem 2014; 69:800-5. [PMID: 15849420 DOI: 10.1271/bbb.69.800] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Royal jelly (RJ) is known to have a variety of biological activities toward various types of cells and tissues of animal models, but nothing is known about its effect on brain functions. Hence, we examined the effect of oral administration of RJ on the mRNA expression of various neurotrophic factors, their receptors, and neural cell markers in the mouse brain. Our results revealed that RJ selectively facilitates the mRNA expression of glial cell line-derived neurotrophic factor (GDNF), a potent neurotrophic factor acting in the brain, and neurofilament H, a specific marker predominantly found in neuronal axons, in the adult mouse hippocampus. These observations suggest that RJ shows neurotrophic effects on the mature brain via stimulation of GDNF production, and that enhanced expression of neurofilament H mRNA is involved in events subsequently caused by GDNF. RJ may play neurotrophic and/or neuroprotective roles in the adult brain through GDNF.
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Affiliation(s)
- Manabu Hashimoto
- Laboratory of Molecular Biology, Gifu Pharmaceutical University, Gifu 502-8585, Japan
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11
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Kalaivani P, Saranya RB, Ramakrishnan G, Ranju V, Sathiya S, Gayathri V, Thiyagarajan LK, Venkhatesh JR, Babu CS, Thanikachalam S. Cuminum cyminum, a Dietary Spice, Attenuates Hypertension via Endothelial Nitric Oxide Synthase and NO Pathway in Renovascular Hypertensive Rats. Clin Exp Hypertens 2013; 35:534-42. [DOI: 10.3109/10641963.2013.764887] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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12
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Roussel Y, Harris A, Lee MH, Wilks M. Novel methods of quantitative real-time PCR data analysis in a murine Helicobacter pylori vaccine model. Vaccine 2007; 25:2919-29. [PMID: 16905224 DOI: 10.1016/j.vaccine.2006.07.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2006] [Revised: 07/07/2006] [Accepted: 07/11/2006] [Indexed: 01/02/2023]
Abstract
Monitoring of Helicobacter pylori in the stomach is important to assess the efficacy of new vaccines against the pathogen. To realise the full potential of quantitative real-time PCR (q-PCR), this technology has to offer accurate and easy models of post-PCR data analysis. In this work, we used a variety of absolute and relative approaches of q-PCR data analysis to monitor the H. pylori infection in the stomach of immunized mice. Relative quantification was performed with Ct-based methods, with the DART program, and with two methods based on the mathematical analysis of raw fluorescence kinetics, the LinReg program and the Sigmoidal Curve Fitting Method. The different calculation methods were validated in mice immunized with cell lysates of Lactococcus lactis expressing the H. pylori urease subunit B in combination with cholera toxin. The H. pylori load was found to be reduced in immunized mice by a factor of 50-144, depending on the calculation method employed. We found that relative quantification using DART, LinReg and Sigmoidal Curve Fitting methods generated similar results (infection ratios of 54-58) with absolute quantification results (54-65). Results were very different to those using relative quantification Ct-based methods without a correction for PCR efficiency (ratio of 92-144) and with results based on conventional culture method (ratio of 34). Overall, this study demonstrates that q-PCR associated with a relative quantification analysis is a powerful tool for the monitoring of microorganisms in tissue. It could be used as an alternative to standard curve approach especially for the investigation of microbial load in vaccine models.
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Affiliation(s)
- Yvonne Roussel
- Department of Microbiology and Virology, Barts and the London NHS Trust, 3rd Floor, Pathology & Pharmacy Building, 80 Newark Street, Whitechapel, London E1 2ES, United Kingdom
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Mamo S, Sargent CA, Affara NA, Tesfaye D, El-Halawany N, Wimmers K, Gilles M, Schellander K, Ponsuksili S. Transcript profiles of some developmentally important genes detected in bovine oocytes and in vitro-produced blastocysts using RNA amplification and cDNA microarrays. Reprod Domest Anim 2007; 41:527-34. [PMID: 17107512 DOI: 10.1111/j.1439-0531.2006.00708.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
To study the mRNA transcript profiles of some potential candidate developmental genes during bovine oocyte and blastocyst stages, RNA amplification procedures, cDNA microarray of 82 target genes spotted onto glass slide and real-time polymerase chain reaction (PCR) were used. Messenger RNAs were isolated from in vitro-produced bovine matured oocytes and blastocysts. Using equal amounts of input mRNAs but different cycles of amplifications, cDNAs were produced and served as template for RNA amplification by the in vitro transcriptions. After amplification, the RNA yields transcribed from cDNAs of different cycles were evaluated both by hybridization on the cDNA microarrays and by using real-time PCR techniques. The analyses indicated best results from lower amplification cycle templates with consistent signals at hybridization. Generally, the RNA yield was directly proportional to the amplification cycle but inversely related with signal consistency at repeated hybridizations. Using the protocols established, equal amounts of amplified RNA from matured oocytes and blastocysts were hybridized to the array. Analyses of replicated hybridizations indicated that 35 transcripts were differentially expressed. Most of these were not described in previous bovine embryo studies. Independent analyses of 23 transcripts with real-time PCR and unamplified RNA confirmed the results of 22 genes. Moreover, the functional analyses showed various roles related to development. Hence, it is possible to conclude that the genes identified here are potential candidates for characterizing developmental competence, and that the methods established can be used for large-scale gene expression analysis with more comprehensive arrays.
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Affiliation(s)
- S Mamo
- Institute of Animal Breeding Sciences, University of Bonn, Bonn, Germany
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