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Arun Kumar S, Good J, Hendrix D, Yoo E, Kim D, Deo KA, Jhan YY, Gaharwar AK, Bishop CJ. Nanoengineered Light-Activatable Polybubbles for On-Demand Therapeutic Delivery. Adv Funct Mater 2020. [PMID: 32774203 DOI: 10.1002/adfm.202002046] [Citation(s) in RCA: 109] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Vaccine coverage is severely limited in developing countries due to inefficient protection of vaccine functionality as well as lack of patient compliance to receive the additional booster doses. Thus, there is an urgent need to design a thermostable vaccine delivery platform that also enables release of the bolus after predetermined time. Here, the formation of injectable and light-activatable polybubbles for vaccine delivery is reported. In vitro studies show that polybubbles enable delayed burst release, irrespective of cargo types, namely small molecule and antigen. The extracorporeal activation of polybubbles is achieved by incorporating near-infrared (NIR)-sensitive gold nanorods (AuNRs). Interestingly, light-activatable polybubbles can be used for on-demand burst release of cargo. In vitro, ex vivo, and in vivo studies demonstrate successful activation of AuNR-loaded polybubbles. Overall, the light-activatable polybubble technology can be used for on-demand delivery of various therapeutics including small molecule drugs, immunologically relevant protein, peptide antigens, and nucleic acids.
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Affiliation(s)
- Shreedevi Arun Kumar
- Biomedical Engineering College of Engineering Texas A&M University College Station TX 77843 USA
| | - Jacob Good
- Biomedical Engineering College of Engineering Texas A&M University College Station TX 77843 USA
| | - David Hendrix
- Biomedical Engineering College of Engineering Texas A&M University College Station TX 77843 USA
| | - Eunsoo Yoo
- Irma Lerma Rangel College of Pharmacy Texas A&M Health Science Center Kingsville TX 78363 USA
| | - Dongin Kim
- Irma Lerma Rangel College of Pharmacy Texas A&M Health Science Center Kingsville TX 78363 USA
| | - Kaivalya A Deo
- Biomedical Engineering College of Engineering Texas A&M University College Station TX 77843 USA
| | - Yong-Yu Jhan
- Biomedical Engineering College of Engineering Texas A&M University College Station TX 77843 USA
| | - Akhilesh K Gaharwar
- Biomedical Engineering College of Engineering Texas A&M University College Station TX 77843 USA
- Material Science and Engineering College of Engineering Texas A&M University College Station TX 77843 USA
- Center for Remote Health Technologies and Systems Texas A&M University College Station TX 77843 USA
| | - Corey J Bishop
- Biomedical Engineering College of Engineering Texas A&M University College Station TX 77843 USA
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Arun Kumar S, Good J, Hendrix D, Yoo E, Kim D, Deo KA, Jhan Y, Gaharwar AK, Bishop CJ. Nanoengineered Light-Activatable Polybubbles for On-Demand Therapeutic Delivery. Adv Funct Mater 2020; 30:2003579. [PMID: 32774203 PMCID: PMC7401402 DOI: 10.1002/adfm.202003579] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Indexed: 05/17/2023]
Abstract
Vaccine coverage is severely limited in developing countries due to inefficient protection of vaccine functionality as well as lack of patient compliance to receive the additional booster doses. Thus, there is an urgent need to design a thermostable vaccine delivery platform that also enables release of the bolus after predetermined time. Here, the formation of injectable and light-activatable polybubbles for vaccine delivery is reported. In vitro studies show that polybubbles enable delayed burst release, irrespective of cargo types, namely small molecule and antigen. The extracorporeal activation of polybubbles is achieved by incorporating near-infrared (NIR)-sensitive gold nanorods (AuNRs). Interestingly, light-activatable polybubbles can be used for on-demand burst release of cargo. In vitro, ex vivo, and in vivo studies demonstrate successful activation of AuNR-loaded polybubbles. Overall, the light-activatable polybubble technology can be used for on-demand delivery of various therapeutics including small molecule drugs, immunologically relevant protein, peptide antigens, and nucleic acids.
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Affiliation(s)
- Shreedevi Arun Kumar
- Biomedical EngineeringCollege of EngineeringTexas A&M UniversityCollege StationTX77843USA
| | - Jacob Good
- Biomedical EngineeringCollege of EngineeringTexas A&M UniversityCollege StationTX77843USA
| | - David Hendrix
- Biomedical EngineeringCollege of EngineeringTexas A&M UniversityCollege StationTX77843USA
| | - Eunsoo Yoo
- Irma Lerma Rangel College of PharmacyTexas A&M Health Science CenterKingsvilleTX78363USA
| | - Dongin Kim
- Irma Lerma Rangel College of PharmacyTexas A&M Health Science CenterKingsvilleTX78363USA
| | - Kaivalya A. Deo
- Biomedical EngineeringCollege of EngineeringTexas A&M UniversityCollege StationTX77843USA
| | - Yong‐Yu Jhan
- Biomedical EngineeringCollege of EngineeringTexas A&M UniversityCollege StationTX77843USA
| | - Akhilesh K. Gaharwar
- Biomedical EngineeringCollege of EngineeringTexas A&M UniversityCollege StationTX77843USA
- Material Science and EngineeringCollege of EngineeringTexas A&M UniversityCollege StationTX77843USA
- Center for Remote Health Technologies and SystemsTexas A&M UniversityCollege StationTX77843USA
| | - Corey J. Bishop
- Biomedical EngineeringCollege of EngineeringTexas A&M UniversityCollege StationTX77843USA
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Sall K, Dekkers BJW, Nonogaki M, Katsuragawa Y, Koyari R, Hendrix D, Willems LAJ, Bentsink L, Nonogaki H. DELAY OF GERMINATION 1-LIKE 4 acts as an inducer of seed reserve accumulation. Plant J 2019; 100:7-19. [PMID: 31359518 DOI: 10.1111/tpj.14485] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 06/10/2019] [Accepted: 06/17/2019] [Indexed: 05/18/2023]
Abstract
More than 70% of global food supply depends on seeds. The major seed reserves, such as proteins, lipids, and polysaccharides, are produced during seed maturation. Here, we report that DELAY OF GERMINATION 1-LIKE 4 (DOGL4) is a major inducer of reserve accumulation during seed maturation. The DOGL family proteins are plant-specific proteins of largely unknown biochemical function. DOGL4 shares only limited homology in amino acid sequence with DOG1, a major regulator of seed dormancy. DOGL4 was identified as one of the outstanding abscisic acid (ABA)-induced genes in our RNA sequencing analysis, whereas DOG1 was not induced by ABA. Induction of DOGL4 caused the expression of 70 seed maturation-specific genes, even in germinating seeds, including the major seed reserves ALBUMIN, CRUCIFERIN and OLEOSIN. Although DOG1 affects the expression of many seed maturation genes, the major seed reserve genes induced by DOGL4 are not altered by the dog1 mutation. Furthermore, the reduced dormancy and longevity phenotypes observed in the dog1 seeds were not observed in the dogl4 mutants, suggesting that these two genes have limited functional overlap. Taken together, these results suggest that DOGL4 is a central factor mediating reserve accumulation in seeds, and that the two DOG1 family proteins have diverged over the course of evolution into independent regulators of seed maturation, but retain some overlapping function.
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Affiliation(s)
- Khadidiatou Sall
- Department of Horticulture, Oregon State University, Corvallis, OR, 97331, USA
| | - Bas J W Dekkers
- Wageningen Seed Laboratory, Laboratory of Plant Physiology, Wageningen University, Wageningen, the Netherlands
| | - Mariko Nonogaki
- Department of Horticulture, Oregon State University, Corvallis, OR, 97331, USA
| | | | - Ryosuke Koyari
- Department of Horticulture, Oregon State University, Corvallis, OR, 97331, USA
| | - David Hendrix
- Department of Biochemistry and Biophysics, School of Electrical Engineering and Computer Science, Oregon State University, Corvallis, OR, 97331, USA
| | - Leo A J Willems
- Wageningen Seed Laboratory, Laboratory of Plant Physiology, Wageningen University, Wageningen, the Netherlands
| | - Leónie Bentsink
- Wageningen Seed Laboratory, Laboratory of Plant Physiology, Wageningen University, Wageningen, the Netherlands
| | - Hiroyuki Nonogaki
- Department of Horticulture, Oregon State University, Corvallis, OR, 97331, USA
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Danaee P, Rouches M, Wiley M, Deng D, Huang L, Hendrix D. bpRNA: large-scale automated annotation and analysis of RNA secondary structure. Nucleic Acids Res 2019; 46:5381-5394. [PMID: 29746666 PMCID: PMC6009582 DOI: 10.1093/nar/gky285] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [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: 02/07/2018] [Accepted: 04/11/2018] [Indexed: 01/04/2023] Open
Abstract
While RNA secondary structure prediction from sequence data has made remarkable progress, there is a need for improved strategies for annotating the features of RNA secondary structures. Here, we present bpRNA, a novel annotation tool capable of parsing RNA structures, including complex pseudoknot-containing RNAs, to yield an objective, precise, compact, unambiguous, easily-interpretable description of all loops, stems, and pseudoknots, along with the positions, sequence, and flanking base pairs of each such structural feature. We also introduce several new informative representations of RNA structure types to improve structure visualization and interpretation. We have further used bpRNA to generate a web-accessible meta-database, ‘bpRNA-1m’, of over 100 000 single-molecule, known secondary structures; this is both more fully and accurately annotated and over 20-times larger than existing databases. We use a subset of the database with highly similar (≥90% identical) sequences filtered out to report on statistical trends in sequence, flanking base pairs, and length. Both the bpRNA method and the bpRNA-1m database will be valuable resources both for specific analysis of individual RNA molecules and large-scale analyses such as are useful for updating RNA energy parameters for computational thermodynamic predictions, improving machine learning models for structure prediction, and for benchmarking structure-prediction algorithms.
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Affiliation(s)
| | | | | | - Dezhong Deng
- School of Electrical Engineering and Computer Science
| | - Liang Huang
- School of Electrical Engineering and Computer Science
| | - David Hendrix
- School of Electrical Engineering and Computer Science.,Department of Biochemistry and Biophysics
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Hill ST, Sudarsanam R, Henning J, Hendrix D. HopBase: a unified resource for Humulus genomics. Database (Oxford) 2017; 2017:3109162. [PMID: 28415075 PMCID: PMC5467566 DOI: 10.1093/database/bax009] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2016] [Revised: 01/04/2017] [Accepted: 01/24/2017] [Indexed: 11/30/2022]
Abstract
Hop (Humulus lupulus L. var lupulus) is a dioecious plant of worldwide significance, used primarily for bittering and flavoring in brewing beer. Studies on the medicinal properties of several unique compounds produced by hop have led to additional interest from pharmacy and healthcare industries as well as livestock production as a natural antibiotic. Genomic research in hop has resulted a published draft genome and transcriptome assemblies. As research into the genomics of hop has gained interest, there is a critical need for centralized online genomic resources. To support the growing research community, we report the development of an online resource "HopBase.org." In addition to providing a gene annotation to the existing Shinsuwase draft genome, HopBase makes available genome assemblies and annotations for both the cultivar "Teamaker" and male hop accession number USDA 21422M. These genome assemblies, gene annotations, along with other common data, coupled with a genome browser and BLAST database enable the hop community to enter the genomic age. The HopBase genomic resource is accessible at http://hopbase.org and http://hopbase.cgrb.oregonstate.edu.
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Affiliation(s)
- Steven T. Hill
- Electrical Engineering and Computer Science, Oregon State University
| | | | - John Henning
- USDA-ARS-Forage Seed & Cereal Research, Corvallis, OR 97331, USA
| | - David Hendrix
- Electrical Engineering and Computer Science, Oregon State University
- Biochemistry and Biophysics, Oregon State University, OR, USA
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Grote P, Wittler L, Hendrix D, Koch F, Währisch S, Beisaw A, Macura K, Bläss G, Kellis M, Werber M, Herrmann BG. The tissue-specific lncRNA Fendrr is an essential regulator of heart and body wall development in the mouse. Dev Cell 2013; 24:206-14. [PMID: 23369715 PMCID: PMC4149175 DOI: 10.1016/j.devcel.2012.12.012] [Citation(s) in RCA: 737] [Impact Index Per Article: 67.0] [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] [Received: 04/24/2012] [Revised: 12/19/2012] [Accepted: 12/20/2012] [Indexed: 11/22/2022]
Abstract
The histone-modifying complexes PRC2 and TrxG/MLL play pivotal roles in determining the activation state of genes controlling pluripotency, lineage commitment, and cell differentiation. Long noncoding RNAs (lncRNAs) can bind to either complex, and some have been shown to act as modulators of PRC2 or TrxG/MLL activity. Here we show that the lateral mesoderm-specific lncRNA Fendrr is essential for proper heart and body wall development in the mouse. Embryos lacking Fendrr displayed upregulation of several transcription factors controlling lateral plate or cardiac mesoderm differentiation, accompanied by a drastic reduction in PRC2 occupancy along with decreased H3K27 trimethylation and/or an increase in H3K4 trimethylation at their promoters. Fendrr binds to both the PRC2 and TrxG/MLL complexes, suggesting that it acts as modulator of chromatin signatures that define gene activity. Thus, we identified an lncRNA that plays an essential role in the regulatory networks controlling the fate of lateral mesoderm derivatives.
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Affiliation(s)
- Phillip Grote
- Max Planck Institute for Molecular Genetics, Department of Developmental Genetics, Ihnestr. 63-73, 14195 Berlin, Germany
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Hellsten U, Harland RM, Gilchrist MJ, Hendrix D, Jurka J, Kapitonov V, Ovcharenko I, Putnam NH, Shu S, Taher L, Blitz IL, Blumberg B, Dichmann DS, Dubchak I, Amaya E, Detter JC, Fletcher R, Gerhard DS, Goodstein D, Graves T, Grigoriev IV, Grimwood J, Kawashima T, Lindquist E, Lucas SM, Mead PE, Mitros T, Ogino H, Ohta Y, Poliakov AV, Pollet N, Robert J, Salamov A, Sater AK, Schmutz J, Terry A, Vize PD, Warren WC, Wells D, Wills A, Wilson RK, Zimmerman LB, Zorn AM, Grainger R, Grammer T, Khokha MK, Richardson PM, Rokhsar DS. The genome of the Western clawed frog Xenopus tropicalis. Science 2010; 328:633-6. [PMID: 20431018 PMCID: PMC2994648 DOI: 10.1126/science.1183670] [Citation(s) in RCA: 574] [Impact Index Per Article: 41.0] [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: 12/13/2022]
Abstract
The western clawed frog Xenopus tropicalis is an important model for vertebrate development that combines experimental advantages of the African clawed frog Xenopus laevis with more tractable genetics. Here we present a draft genome sequence assembly of X. tropicalis. This genome encodes more than 20,000 protein-coding genes, including orthologs of at least 1700 human disease genes. Over 1 million expressed sequence tags validated the annotation. More than one-third of the genome consists of transposable elements, with unusually prevalent DNA transposons. Like that of other tetrapods, the genome of X. tropicalis contains gene deserts enriched for conserved noncoding elements. The genome exhibits substantial shared synteny with human and chicken over major parts of large chromosomes, broken by lineage-specific chromosome fusions and fissions, mainly in the mammalian lineage.
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Affiliation(s)
- Uffe Hellsten
- Department of Energy Joint Genome Institute, Walnut Creek, CA 94598, USA.
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8
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Hendrix D, Levine M, Shi W. miRTRAP, a computational method for the systematic identification of miRNAs from high throughput sequencing data. Genome Biol 2010; 11:R39. [PMID: 20370911 PMCID: PMC2884542 DOI: 10.1186/gb-2010-11-4-r39] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.6] [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: 10/12/2009] [Revised: 01/19/2010] [Accepted: 04/06/2010] [Indexed: 12/14/2022] Open
Abstract
A novel method for prediction of miRs from deep sequencing data. Its utility is demonstrated when applied to Ciona data. MicroRNAs (miRs) have been broadly implicated in animal development and disease. We developed a novel computational strategy for the systematic, whole-genome identification of miRs from high throughput sequencing information. This method, miRTRAP, incorporates the mechanisms of miR biogenesis and includes additional criteria regarding the prevalence and quality of small RNAs arising from the antisense strand and neighboring loci. This program was applied to the simple chordate Ciona intestinalis and identified nearly 400 putative miR loci.
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Affiliation(s)
- David Hendrix
- Department of Molecular and Cell Biology, Division of Genetics, Genomics and Development, Center for Integrative Genomics, University of California, Berkeley, 142 LSA#3200, Berkeley, CA 94720-3200, USA.
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Hendrix D. Relationships between Association of Research Libraries (ARL) Statistics and Bibliometric Indicators: A Principal Components Analysis. College & Research Libraries 2010. [DOI: 10.5860/crl.71.1.32] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Snell M, Chau C, Hendrix D, Fox R, Downes KA, Creger R, Meyerson H, Telen MJ, Laughlin MJ, Lazarus HM, Yomtovian R. Lack of isohemagglutinin production following minor ABO incompatible unrelated HLA mismatched umbilical cord blood transplantation. Bone Marrow Transplant 2006; 38:135-40. [PMID: 16751785 DOI: 10.1038/sj.bmt.1705409] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
While immune hemolysis due to donor isohemagglutinin (IH) production often complicates minor ABO incompatible peripheral blood hematopoietic stem cell transplantation (PBSCT), it is not known if this occurs with umbilical cord blood transplantation (UCBT). We compared IH production and hemolysis following minor ABO allogeneic PBSCT and UCBT. We reviewed 24 ABO minor incompatible allogeneic PBSCTs and 14 ABO minor incompatible UCBTs. Patients were evaluated for donor-derived IH by reverse ABO grouping. Evaluation of hemolysis was based on clinical and laboratory findings of anemia associated with increased RBC transfusion need, concomitant with the appearance of donor-derived IH. Of the 24 ABO minor incompatible allogeneic PBSCTs, 15 produced donor-derived IH from 6 to 88 days following transplantation, with seven of 15 patients exhibiting clinically evident hemolysis. There was no significant difference in days to leukocyte engraftment or infused CD34 cells in patients with or without donor-derived IH. None of the 14 patients receiving ABO incompatible UCBTs showed evidence of donor-derived IH following transplantation with a median follow-up of 60 days. We conclude that donor IHs are not produced in patients undergoing minor ABO incompatible UCBTs suggesting fundamental immunologic differences between allogeneic PBSCT and UCBT.
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Affiliation(s)
- M Snell
- Department of Internal Medicine, Division of Hematology/Oncology, University Hospitals of Cleveland & Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
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Mahony S, Hendrix D, Smith TJ, Golden A. Self-Organizing Maps of Position Weight Matrices for Motif Discovery in Biological Sequences. Artif Intell Rev 2005. [DOI: 10.1007/s10462-005-9011-9] [Citation(s) in RCA: 12] [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: 11/25/2022]
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Abstract
MOTIVATION The automatic identification of over-represented motifs present in a collection of sequences continues to be a challenging problem in computational biology. In this paper, we propose a self-organizing map of position weight matrices as an alternative method for motif discovery. The advantage of this approach is that it can be used to simultaneously characterize every feature present in the dataset, thus lessening the chance that weaker signals will be missed. Features identified are ranked in terms of over-representation relative to a background model. RESULTS We present an implementation of this approach, named SOMBRERO (self-organizing map for biological regulatory element recognition and ordering), which is capable of discovering multiple distinct motifs present in a single dataset. Demonstrated here are the advantages of our approach on various datasets and SOMBRERO's improved performance over two popular motif-finding programs, MEME and AlignACE. AVAILABILITY SOMBRERO is available free of charge from http://bioinf.nuigalway.ie/sombrero SUPPLEMENTARY INFORMATION http://bioinf.nuigalway.ie/sombrero/additional.
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Affiliation(s)
- Shaun Mahony
- National Centre for Biomedical Engineering Science, NUI Galway, Ireland.
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Froyen G, Hendrix D, Ronsse I, Fiten P, Martens E, Billiau A. Effect of VH and VL consensus sequence-specific primers on the binding and neutralizing potential of a single-chain FV directed towards HuIFN-gamma. Mol Immunol 1995; 32:515-21. [PMID: 7783754 DOI: 10.1016/0161-5890(95)00010-c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
We have previously reported on the cloning and bacterial expression of a biologically active scFv antibody fragment (scFv-D9D10) derived from the mouse anti-human interferon-gamma (HuIFN-gamma) antibody, D9D10. Since the variable (V) regions were isolated by means of VH and VL consensus sequence-specific PCR primers and cloned in an expression vector relying on primer-incorporated restriction sites, some amino acids (aa) at the N- and C-terminal ends of the cloned V domains were expected to differ from the corresponding ones in the natural D9D10 antibody. Therefore, the naturally occurring sequences of both V domains were isolated by means of traditional cDNA synthesis procedures. In comparison with scFv-D9D10, the "natural" V sequences differed in three aa in VH and three in VL. The V domains of scFv-D9D10 were adapted to their natural sequence by means of PCR-directed mutagenesis to yield scFv-D9D10N. Comparison of the binding and neutralizing potentials of both antibody fragments did not reveal differences in either of both activities. In addition, their affinities for HuIFN-gamma were found to be equal. These results show that murine VH and VL consensus-specific primers can yield antibody fragments having functional properties equivalent to those of the natural scFv. Information on the impact of the use of V-specific primers on kinetics of interaction between the recombinant antibody and the corresponding antigen is important for the development of most engineered antibodies or their fragments.
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Affiliation(s)
- G Froyen
- Rega Institute for Medical Research, University of Leuven, Belgium
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14
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Goodnough LT, Riddell J, Lazarus H, Chafel TL, Prince G, Hendrix D, Yomtovian R. Prevalence of platelet transfusion reactions before and after implementation of leukocyte-depleted platelet concentrates by filtration. Vox Sang 1993; 65:103-7. [PMID: 8212663 DOI: 10.1111/j.1423-0410.1993.tb02124.x] [Citation(s) in RCA: 53] [Impact Index Per Article: 1.7] [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: 01/29/2023]
Abstract
To determine the impact of platelet leukodepletion by filtration on the overall prevalence of reported transfusion reactions associated with platelet concentrates, we audited platelet transfusion reactions after infusion of platelet concentrates reported at University Hospitals of Cleveland over 6 months before (interval 1, July 1, 1989 to December 31, 1989) and after (interval 2, July 1, 1990 to December 31, 1990) implementation of the Pall PL 50 filter on our adult Hematology-Oncology inpatient unit (Division 60). Thirty-two (1.7%) of 1,901 random, pooled platelet transfusion events resulted in blood bank transfusion reaction workups in interval 1, compared to 90 (5.3%) of 1,704 in interval 2 (p < 0.001). The Division 60 service accounted for more of our hospital-wide platelet reactions after implementation of the filter in interval 2 (84%) than before filtration in interval 1 (42%), p = 0.002. The prevalence of reaction workups for Division 60 was 0.6% for interval 1, compared to 4.3% for interval 2 (p < 0.001). No differences were found between interval 1 and interval 2 for the rate of discontinuation of platelet transfusion (36 vs. 32%, p = 0.14), rate of premedication for platelet transfusion (72 vs. 65%, p = 0.6), percentage of direct antiglobulin test-positive reactions (17 vs. 5.4%, p = 0.09), percentage showing icteric/hemolyzed serum (15 vs. 4.4%, p = 0.09), or reactions believed to be due to red blood cell incompatibility (8.8 vs. 1.1%, p = 0.1).(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- L T Goodnough
- Department of Medicine, Case Western Reserve University, Cleveland, Ohio
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15
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Hendrix D. Bemisiose: an unusual trisaccharide in Bemisia honeydew. Carbohydr Res 1992. [DOI: 10.1016/0008-6215(92)84259-u] [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: 10/18/2022]
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16
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Deleersnijder W, Prasomsitti P, Tungpradubkul S, Hendrix D, Hamers-Casterman C, Hamers R. Structure of a Plasmodium chabaudi acidic phosphoprotein that is associated with the host erythrocyte membrane. Mol Biochem Parasitol 1992; 56:59-68. [PMID: 1475002 DOI: 10.1016/0166-6851(92)90154-c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We have characterized by molecular cloning and sequencing a Plasmodium chabaudi antigen that is associated with the membrane of the infected erythrocyte throughout the entire intraerythrocytic cycle. The protein (PcEMA1) has a predicted size of 50 kDa and contains a major tandem repeat array of 16 octapeptides that constitutes almost 30% of the protein. At its amino-terminus, PcEMA1 has a string of hydrophobic residues characteristic of a secreted protein, but does not contain a hydrophobic membrane-spanning segment. The antigen appears to reside on the cytoplasmic face of the erythrocytic membrane. PcEMA1 has a predicted pI of 4.4 and is a potential phosphoprotein.
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Affiliation(s)
- W Deleersnijder
- Laboratorium Algemene Biologie, Instituut voor Moleculaire Biologie, Vrije Universiteit Brussel, Belgium
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17
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Affiliation(s)
- W Deleersnijder
- Laboratorium Algemene Biologie, Instituut voor Moleculaire Biologie, Vrije Universiteit Brussel, Belgium
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Deleersnijder W, Hendrix D, Bendahman N, Hanegreefs J, Brijs L, Hamers-Casterman C, Hamers R. Molecular cloning and sequence analysis of the gene encoding the major merozoite surface antigen of Plasmodium chabaudi chabaudi IP-PC1. Mol Biochem Parasitol 1990; 43:231-44. [PMID: 2090945 DOI: 10.1016/0166-6851(90)90148-f] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The complete nucleotide sequence of the gene encoding the precursor to the major merozoite surface antigens of Plasmodium chabaudi chabaudi strain IP-PC1 has been determined. A single open reading frame was detected, that coded for a protein of 199 kDa. The encoded protein (p199) contains putative signal and membrane anchor sequences and shows a clustering of Cys residues in the last 120 amino acids. Incompletely conserved tandem repeat oligopeptides are present at different positions in the molecule. P199 shows 69% overall homology to the analogous antigen in Plasmodium yoelii yoelii strain YM. The divergence between these antigens is largely confined to 4 areas where a number of insertions and/or deletions have occurred. All repeats occur in these divergent regions. The overall homology with both alleles of Plasmodium falciparum PMMSA is 33%.
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Affiliation(s)
- W Deleersnijder
- Laboratorium Algemene Biologie, Instituut voor Moleculaire Biologie, Vrije Universiteit Brussel, Belgium
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Rhee HM, Valentine JL, Hendrix D, Schweisthal M, Soria M. Hemodynamic responses to vasoactive compounds in chronically alcohol treated rats. Adv Exp Med Biol 1989; 248:629-39. [PMID: 2782179 DOI: 10.1007/978-1-4684-5643-1_70] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- H M Rhee
- Department of Pharmacology, Oral Roberts University, School of Medicine, Tulsa, OK 74137
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