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Nagy ED, Kuehn R, Wang D, Shrawat A, Duda DM, Groat JR, Yang P, Beach S, Zhang Y, Rymarquis L, Carter SL, Gaeta RT, Gilbertson LA. Site-directed integration of exogenous DNA into the soybean genome by LbCas12a fused to a plant viral HUH endonuclease. Plant J 2022; 111:905-916. [PMID: 35635764 DOI: 10.1111/tpj.15849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 05/26/2022] [Accepted: 05/27/2022] [Indexed: 06/15/2023]
Abstract
High efficiency site-directed chromosomal integration of exogenous DNA in plants remains a challenge despite recent advances in genome editing technologies. One approach to mitigate this problem is to increase the effective concentration of the donor DNA at the target site of interest. HUH endonucleases (ENs) coordinate rolling circle replication. In vitro, they can form stable covalent bonds with DNA that carries their recognition motifs. When fused to a CRISPR-associated endonuclease, HUH ENs may improve integration rates by increasing the local donor concentration through tethering of the donor to the CRISPR nuclease. We tested this hypothesis by using chimeric proteins between LbCas12a as a CRISPR-associated endonuclease and the HUH EN from Faba Bean Necrotic Yellow Virus in soybean (Glycine max). Two fusion protein configurations were tested to integrate a 70-nt oligonucleotide donor into a commercially important target site using protoplasts and in planta transformation. Site-directed integration rates of the donor DNA, when tethered to the fusion protein, reached about 26% in plants and were up to four-fold higher than in untethered controls. Integrations via canonical homology-directed repair or non-homologous end joining were promoted by tethering in a similar fashion. This study is the first demonstration of HUH EN-associated tethering to improve site-directed DNA integration in plants.
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Affiliation(s)
| | | | - Dafu Wang
- Bayer Crop Science, St. Louis, Missouri, USA
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Beach S, Kovens M, Hubbert L, Honesty S, Guo Q, Pap D, Dai R, Kovacs L, Qiu W. Genetic and Phenotypic Characterization of Grapevine vein clearing virus from Wild Vitis rupestris. Phytopathology 2017; 107:138-144. [PMID: 27577962 DOI: 10.1094/phyto-04-16-0173-r] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Grapevine vein clearing virus (GVCV), a new member of the genus Badnavirus in the family Caulimoviridae, is associated with a vein clearing and vine decline disease that severely affects grape production and berry quality in commercial vineyards in the Midwest region of the United States. In this paper, the genetic and phenotypic characteristics of GVCV-VRU1 and GVCV-VRU2, two isolates from wild Vitis rupestris grapevines in their native habitat, are described. The GVCV-VRU1 genome is 7,755 bp long while the GVCV-VRU2 genome consists of 7,725 bp, both of which are different from the genome of the GVCV-CHA isolate (7,753 bp), which was originally discovered in the grape cultivar 'Chardonel'. The nucleotide sequence identity among GVCV-VRU1, GVCV-VRU2, and GVCV-CHA ranges from 91.6 to 93.4%, and open reading frame (ORF) II is the most divergent ORF with only 83.3 to 88.5% identity. Sequence analysis of the ORF II indicated that GVCV isolates genetically similar to GVCV-VRU1 and GVCV-VRU2 also are present in commercial vineyards. Symptoms of GVCV-VRU1- or GVCV-VRU2-infected wild V. rupestris grapevine appeared initially as translucent vein clearing on young leaves and progressed to vein necrosis on mature leaves. Inoculation of GVCV-VRU1 or GVCV-VRU2 by grafting onto grape cultivar Chardonel resulted in mild mottle and leaf distortion. The natural range of wild V. rupestris grapevines overlaps with commercial vineyards in the Midwestern United States. Therefore, the discovery of GVCV isolates in wild V. rupestris grapevines has important implications for epidemics and management of the GVCV-associated disease.
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Affiliation(s)
- Steven Beach
- First, second, third, fourth, fifth, sixth, seventh, and ninth authors: Center for Grapevine Biotechnology, Darr School of Agriculture, Missouri State University, Mountain Grove, MO 65711; and eighth author: Department of Biology, Missouri State University, Springfield, MO 65897
| | - Michael Kovens
- First, second, third, fourth, fifth, sixth, seventh, and ninth authors: Center for Grapevine Biotechnology, Darr School of Agriculture, Missouri State University, Mountain Grove, MO 65711; and eighth author: Department of Biology, Missouri State University, Springfield, MO 65897
| | - LeAnn Hubbert
- First, second, third, fourth, fifth, sixth, seventh, and ninth authors: Center for Grapevine Biotechnology, Darr School of Agriculture, Missouri State University, Mountain Grove, MO 65711; and eighth author: Department of Biology, Missouri State University, Springfield, MO 65897
| | - Shae Honesty
- First, second, third, fourth, fifth, sixth, seventh, and ninth authors: Center for Grapevine Biotechnology, Darr School of Agriculture, Missouri State University, Mountain Grove, MO 65711; and eighth author: Department of Biology, Missouri State University, Springfield, MO 65897
| | - Qiang Guo
- First, second, third, fourth, fifth, sixth, seventh, and ninth authors: Center for Grapevine Biotechnology, Darr School of Agriculture, Missouri State University, Mountain Grove, MO 65711; and eighth author: Department of Biology, Missouri State University, Springfield, MO 65897
| | - Daniel Pap
- First, second, third, fourth, fifth, sixth, seventh, and ninth authors: Center for Grapevine Biotechnology, Darr School of Agriculture, Missouri State University, Mountain Grove, MO 65711; and eighth author: Department of Biology, Missouri State University, Springfield, MO 65897
| | - Ru Dai
- First, second, third, fourth, fifth, sixth, seventh, and ninth authors: Center for Grapevine Biotechnology, Darr School of Agriculture, Missouri State University, Mountain Grove, MO 65711; and eighth author: Department of Biology, Missouri State University, Springfield, MO 65897
| | - Laszlo Kovacs
- First, second, third, fourth, fifth, sixth, seventh, and ninth authors: Center for Grapevine Biotechnology, Darr School of Agriculture, Missouri State University, Mountain Grove, MO 65711; and eighth author: Department of Biology, Missouri State University, Springfield, MO 65897
| | - Wenping Qiu
- First, second, third, fourth, fifth, sixth, seventh, and ninth authors: Center for Grapevine Biotechnology, Darr School of Agriculture, Missouri State University, Mountain Grove, MO 65711; and eighth author: Department of Biology, Missouri State University, Springfield, MO 65897
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Stacey D, Taljaard M, Dervin G, Tugwell P, O'Connor AM, Pomey MP, Boland L, Beach S, Meltzer D, Hawker G. Impact of patient decision aids on appropriate and timely access to hip or knee arthroplasty for osteoarthritis: a randomized controlled trial. Osteoarthritis Cartilage 2016; 24:99-107. [PMID: 26254238 DOI: 10.1016/j.joca.2015.07.024] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 07/09/2015] [Accepted: 07/21/2015] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To evaluate the effectiveness of patient decision aids (PtDA) compared to usual education on appropriate and timely access to total joint arthroplasty in patients with osteoarthritis. METHOD A randomized controlled trial (RCT) with patients undergoing orthopedic screening. Control and intervention arms received usual education; intervention arm also received a PtDA and a surgeon preference report. Wait times (primary outcome) were described using stratified Kaplan-Meier survival curves with patients censored at the time of death or loss to follow-up, and multivariable Cox proportional hazards regression. Secondary outcomes were compared using stratified Cochran-Mantel-Haenszel chi-squared tests. RESULTS 343 patients were randomized to intervention (n = 174) or control (n = 169). The typical patient was 66 years old, retired, living with someone, and 51% had high school education or less. The intervention was associated with a trend towards reduction in wait time (hazard ratio (HR) 1.25, 95% confidence interval (CI) 0.99-1.60, P = 0.0653). Median wait times were 3 weeks shorter in intervention than in control at the community site with no difference at the academic site. Good decision quality was reached by 56.1% intervention and 44.5% control (Relative risk (RR) 1.25; 95% CI 1.00-1.56, P = 0.050). Surgery rates were 73.2% intervention and 80.5% controls (RR 0.91: 95% CI 0.81-1.03) with 12 intervention (7.3%) and eight control participants (4.9%) returning to have surgery within 2 years (P = 0.791). CONCLUSION Compared to controls, decision aid recipients had shorter wait times at one site, fewer surgeries, and were more likely to reach good decision quality, but overall effect was not statistically significant. TRIALS REGISTRATION The full trial protocol is available at ClinicalTrials.Gov (NCT00911638).
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Affiliation(s)
- D Stacey
- University of Ottawa, Faculty of Health Sciences, Canada; Ottawa Hospital Research Institute, Clinical Epidemiology Program, Canada.
| | - M Taljaard
- Ottawa Hospital Research Institute, Clinical Epidemiology Program, Canada; University of Ottawa, Department of Epidemiology and Community Medicine, Canada.
| | - G Dervin
- Ottawa Hospital Research Institute, Clinical Epidemiology Program, Canada.
| | - P Tugwell
- Ottawa Hospital Research Institute, Clinical Epidemiology Program, Canada; University of Ottawa, Department of Epidemiology and Community Medicine, Canada.
| | - A M O'Connor
- University of Ottawa, Faculty of Health Sciences, Canada.
| | - M P Pomey
- University of Montréal, School of Public Health, Canada.
| | - L Boland
- University of Ottawa, Faculty of Health Sciences, Canada.
| | - S Beach
- Ottawa Hospital Research Institute, Clinical Epidemiology Program, Canada.
| | - D Meltzer
- University of Chicago, Department of Medicine, USA.
| | - G Hawker
- University of Toronto, Faculty of Medicine and Women's College Hospital, Canada.
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Usher J, DeWerd L, Beach S, Selwyn R. MO-E-AUD-07: Calculating the Air-Kerma Strength and Dose-Rate Constant of 125I and 103Pd Low Dose Rate Brachytherapy Sources Using Spectra Measured With a High-Purity Germanium Spectrometer. Med Phys 2007. [DOI: 10.1118/1.2761293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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DeWerd LA, Stump K, Culberson W, Beach S. MO-E-T-618-07: Toward An Energy-Based Dosimetry. Med Phys 2005. [DOI: 10.1118/1.1998304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Sequeira A, Arbour G, Beach S, Huang J. 2 JAUNDICE AND THE ENIGMATIC RED LEG. J Investig Med 2005. [DOI: 10.2310/6650.2005.00006.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Sequeira A, Britten D, Albritton M, Ton A, Reddymasu S, Mitchell L, Arbour G, Beach S, Sturdivant J, Grier L, Huang J. 187 TOO HOT TO HANDLE: MALIGNANT HYPERTHERMIA NOT TO BE FORGOTTEN. J Investig Med 2005. [DOI: 10.2310/6650.2005.00006.186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Abstract
Unipolar depressive disorders are especially common among persons presenting with marital and family problems, rendering their impact on the treatment of marital and family problems of interest to every marriage and family therapist. The current paper describes empirically based decision making rules for determining who may benefit most from marital and family therapy interventions. Using well-controlled outcome research, it is concluded that both marital therapy and parenting interventions can play an important role in the treatment of many but not all depressed persons. Predictors of treatment response are discussed and recent epidemiological research is used to examine the size of the population that may respond especially well to marital therapy. Future directions for research are suggested and public policy implications are discussed.
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Affiliation(s)
- Steven Beach
- Institute for Behavioral Research, 111 Barrow Hall, University of Georgia, Athens, GA 30602, USA.
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Agama K, Beach S, Schoelz J, Leisner SM. The 5' Third of Cauliflower mosaic virus Gene VI Conditions Resistance Breakage in Arabidopsis Ecotype Tsu-0. Phytopathology 2002; 92:190-6. [PMID: 18943093 DOI: 10.1094/phyto.2002.92.2.190] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
ABSTRACT Arabidopsis thaliana ecotypes vary in their responses to viruses. In this study, we analyzed the variation in response of A. thaliana ecotype Tsu-0 to Cauliflower mosaic virus (CaMV). This ecotype was previously reported to be resistant to two CaMV isolates (CM1841 and CM4-184), but susceptible to W260. In this study, we show that Tsu-0 is resistant to four additional CaMV isolates. CaMV propagated within the rosette leaves of Tsu-0 plants, but did not appear to spread systemically into the inflorescence. However, virus viability in rosette leaves of Tsu-0 plants apparently was not compromised because infectious CaMV could be recovered from these organs. W260 overcomes Tsu-0 resistance by a passive mechanism (i.e., this virus avoids activating plant defenses). The portion of the viral genome responsible for W260 resistance breakage was mapped to the 5' third of gene VI, which we have termed RBR-1. This region is also responsible for controlling the ability of CaMV to infect different types of solanaceous plants. Hence, the pathways by which plants of different families interact with CaMV may be conserved through evolution.
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Abstract
OBJECTIVE To examine the constructs of task independence, safety, and adequacy. METHOD Fifty-seven nondisabled (ND) and 56 osteoarthritis-disabled (OAK) women were observed performing daily tasks. RESULTS Intercorrelations among the constructs of independence and adequacy were uniformly high, while the relationship of safety to these constructs was moderate and more variable, although stronger in the OAK group. Task performance of the OAK group was consistently less adequate and independent than that of the ND group; however, the groups were generally equivalent in safety. For individual tasks, adequacy best differentiated between the groups. In both groups, those who performed independently also performed safely, but fewer independent OAK participants also performed totally adequately. CONCLUSION The majority of older women who perform tasks independently also perform them safely and adequately; for a clinically significant minority, independence is not always synonymous with safe and adequate performance. Patients may be placed at risk if independence is the only construct used to determine disability.
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Affiliation(s)
- J C Rogers
- Dept of Occupational Therapy, School of Health and Rehabilitation Sciences, University of Pittsburgh, PA 15260, USA. jcr+@pitt.edu
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Genot E, Reif K, Beach S, Kramer I, Cantrell D. p21ras initiates Rac-1 but not phosphatidyl inositol 3 kinase/PKB, mediated signaling pathways in T lymphocytes. Oncogene 1998; 17:1731-8. [PMID: 9796702 DOI: 10.1038/sj.onc.1202101] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.2] [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: 11/08/2022]
Abstract
p21ras is activated by the T cell antigen receptor (TCR) and then co-ordinates important signaling pathways for T lymphocyte activation. Effector pathways for this guanine nucleotide binding protein in T cells are mediated by the serine/threonine kinase Raf-1 and the Ras-related GTPase Rac-1. In fibroblasts, an important effector for the Ras oncogene is Phosphatidylinositol 3-kinase (PtdIns 3-kinase). Activation of this lipid kinase is able to induce critical Rac-1 signaling pathways and can couple p21ras to cell survival mechanisms via the serine/threonine kinase Akt/PKB. The role of PtdIns 3-kinase in Ras signaling in T cells has not been explored. In the present study, we examined the ability of PtdIns 3-kinase to initiate the Rac-1 signaling pathways important for T cell activation. We also examined the possibility that Akt/PKB is regulated by Ras signaling pathways in T lymphocytes. The results show that Ras can initiate a Rac-1 mediated pathway that regulates the transcriptional function of AP-1 complexes. PtdIns 3-kinase signals cannot mimic p21ras and induce the Rac mediated responses of AP-1 transcriptional activation. Moreover, neither TCR or Ras activation of AP-1 is dependent on PtdIns 3-kinase. PKB is activated in response to triggering of the T cell antigen receptor; PtdIns 3-kinase activity is both required and sufficient for this TCR response. In contrast, p21ras signals are unable to induce Akt/PKB activity in T cell nor is Ras function required for Akt/PKB activation in response to the TCR. The present data thus highlight that PtdIns 3-kinase and Akt/PKB are not universal Ras effector molecules. Ras can initiate Rac-1 regulated signaling pathways in the context of T cell antigen receptor function independently of PtdIns 3-kinase activity.
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Affiliation(s)
- E Genot
- Department of Immunology, Imperial College, Hammersmith Hospital, London, UK
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Abstract
Seven caregivers of a home-dwelling spouse with Alzheimer's disease were trained during 12 weekly home visits to implement behavior management programs including written cuing procedures in response to repetitive verbalizations. Data from 7 trained caregivers and 7 matched control caregivers who only tracked repetitive behavior were compared. Results revealed that trained caregivers were successful at decreasing patient repetitions using written cues. Patients of control subjects showed no systematic changes in behavioral disturbances due to behavior tracking. In addition, intervention effects lasted for 16 weeks or longer and several caregivers reported applying the cuing intervention to other, nontargeted behaviors. Trained caregivers' perceptions of their efficacy in managing difficult patient behavior improved significantly at the 3-month follow-up assessment when program staff were no longer visiting them weekly.
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Affiliation(s)
- M S Bourgeois
- Florida State University, Tallahassee 32306-2007, USA
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Abstract
The purpose of this study was to investigate primary caregiving spouses' and their lay helpers' divergent opinions about the caregiving environment. Through parallel assessments, both primary and secondary caregivers of a patient with Alzheimer's disease were asked to rate the degree of patient problem behaviors; the degree of strain the primary caregiver was experiencing; and primary care-giver efficacy, or perceived ability to cope with caregiving demands. Analyses concentrated on the general levels of disagreement in these domains, as well as on potential predictors and consequences of such disagreement. Results revealed a substantial divergence in perceptions across caregiving domains, with relatively less disagreement about patient problem behaviors and primary caregiver strain than about primary caregiver coping efficacy. Primary caregivers with relatively pessimistic secondary caregivers experienced relatively less psychosocial distress than primary caregivers with more optimistic helpers. These findings were strongest among female-female caregiving dyads. Theoretical implications and methodological limitations of the study are discussed, along with suggestions for future research.
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Affiliation(s)
- M S Bourgeois
- Center for Social and Urban Research, University of Pittsburgh, Pennsylvania 15260, USA
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15
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Abstract
The purpose of this study was to investigate primary caregiving spouses' and their lay helpers' divergent opinions about the caregiving environment. Through parallel assessments, both primary and secondary caregivers of a patient with Alzheimer's disease were asked to rate the degree of patient problem behaviors; the degree of strain the primary caregiver was experiencing; and primary care-giver efficacy, or perceived ability to cope with caregiving demands. Analyses concentrated on the general levels of disagreement in these domains, as well as on potential predictors and consequences of such disagreement. Results revealed a substantial divergence in perceptions across caregiving domains, with relatively less disagreement about patient problem behaviors and primary caregiver strain than about primary caregiver coping efficacy. Primary caregivers with relatively pessimistic secondary caregivers experienced relatively less psychosocial distress than primary caregivers with more optimistic helpers. These findings were strongest among female-female caregiving dyads. Theoretical implications and methodological limitations of the study are discussed, along with suggestions for future research.
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Affiliation(s)
- M S Bourgeois
- Center for Social and Urban Research, University of Pittsburgh, Pennsylvania 15260, USA
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