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Hao J, Bose A, Sadatrezaei G, Martignetti DB, Jiao Y, da Costa AAB, Lazaro JB, Kochupurakkal B, Nguyen H, Parmar K, D’Andrea AD, Shapiro GI. Abstract 6210: Combination of M1774 and niraparib can overcome ATR and PARP inhibitor resistance in BRCA1 mutated ovarian cancer models. Cancer Res 2023. [DOI: 10.1158/1538-7445.am2023-6210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
Abstract
PARP inhibitors are being used in maintenance treatment of BRCA-mutated high-grade serous ovarian cancer (HGSOC). However, de novo and acquired resistance to PARP inhibitors, resulting from restoration of homologous recombination repair or stabilization of replication forks, is a pressing clinical problem. ATR inhibitors are known to reverse both of these mechanisms of PARP inhibitor resistance and are currently in clinical development. In this study, we assessed the activity of a novel ATR inhibitor, M1774, as a monotherapy and in combination with PARP inhibition in HGSOC preclinical models. M1774 exhibited single-agent activity across a panel of ovarian cancer cell lines with induction of DNA damage. We used a panel of BRCA1-mutated patient-derived xenograft (PDX) models of HGSOC with acquired PARP inhibitor resistance and identified two M1774-sensitive models and one M1774-resistant model. M1774 monotherapy demonstrated anti-tumor activity in mice bearing sensitive PDX models of HGSOC with PARP inhibitor resistance. In the M1774-sensitive models, the combination of M1774 and niraparib augmented the degree and durability of response compared with M1774 monotherapy. The combination of M1774 and niraparib also demonstrated synergistic anti-tumor activity in the M1774-resistant model, indicating that the combination could overcome monotherapy resistant to either agent. We also generated organoid cultures from these PDX models. Treatment of the organoid models with M1774, niraparib or the combination faithfully recapitulated the anti-tumor activities seen in vivo. Mechanistically, M1774-resistant organoid cultures demonstrated stable replication forks and an absence of replication stress. The combination of M1774 with niraparib resulted in destabilization of the replication forks. In contrast, M1774-sensitive organoids exhibited unstable replication forks, which were further destabilized by the niraparib combination. In addition, the sensitive models demonstrated higher basal levels of replication stress, as detected by increased levels of phospho-RPA. Collectively, these results indicate that the combination of M1774 and niraparib can overcome PARP inhibitor resistance and ATR inhibitor resistance in BRCA1-mutant ovarian cancer PDX models and demonstrate the utility of organoid cultures for discerning mechanisms of resistance and strategies to restore drug sensitivity. Combined M1774-mediated ATR inhibition and PARP inhibition may be a promising therapeutic strategy for the treatment of ovarian cancer.
Citation Format: Jie Hao, Arindam Bose, Golbahar Sadatrezaei, David B. Martignetti, Yuqing Jiao, Alexandre André B. da Costa, Jean-Bernard Lazaro, Bose Kochupurakkal, Huy Nguyen, Kalindi Parmar, Alan D. D’Andrea, Geoffrey I. Shapiro. Combination of M1774 and niraparib can overcome ATR and PARP inhibitor resistance in BRCA1 mutated ovarian cancer models. [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 6210.
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Affiliation(s)
- Jie Hao
- 1Dana-Farber Cancer Institute, Boston, MA
| | | | | | | | | | | | | | | | - Huy Nguyen
- 1Dana-Farber Cancer Institute, Boston, MA
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Sarkar A, Dhar S, Bera S, Chakravarti M, Verma A, Prasad P, Saha A, Bhuniya A, Guha I, Roy S, Banerjee S, Baral R, Datta D, Bose A. 213P Type-1 diabetes restricts melanoma growth by reprogramming intra-tumoral T cell metabolism. Immuno-Oncology and Technology 2022. [DOI: 10.1016/j.iotech.2022.100324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Patterson-Fortin J, Bose A, Tsai WC, Grochala CJ, Nguyen H, Zhou J, Parmar K, Lazaro JB, Liu JF, McQueen K, Shapiro GI, Kozono D, D'Andrea AD. Targeting DNA repair with combined inhibition of NHEJ and MMEJ induces synthetic lethality in TP53-mutant cancers. Cancer Res 2022; 82:3815-3829. [PMID: 35972384 PMCID: PMC9588747 DOI: 10.1158/0008-5472.can-22-1124] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 06/16/2022] [Accepted: 08/08/2022] [Indexed: 11/16/2022]
Abstract
DNA repair pathway inhibitors are a new class of anti-cancer drugs that are advancing in clinical trials. Peposertib is an inhibitor of DNA-dependent protein kinase (DNA-PK), which is a key driver of non-homologous end-joining (NHEJ). To identify regulators of response to peposertib, we performed a genome-wide CRISPR knockout screen and found that loss of POLQ (Polymerase Theta, POLθ) and other genes in the microhomology-mediated end-joining (MMEJ) pathway as key predictors of sensitivity to DNA-PK inhibition. Simultaneous disruption of two DNA repair pathways via combined treatment with peposertib plus a POLθ inhibitor novobiocin exhibited synergistic synthetic lethality resulting from accumulation of toxic levels of DNA double-strand break end resection. TP53-mutant tumor cells were resistant to peposertib but maintained elevated expression of POLQ and increased sensitivity to novobiocin. Consequently, the combination of peposertib plus novobiocin resulted in synthetic lethality in TP53-deficient tumor cell lines, organoid cultures, and patient-derived xenograft models. Thus, the combination of a targeted DNA-PK/NHEJ inhibitor with a targeted POLθ/MMEJ inhibitor may provide a rational treatment strategy for TP53-mutant solid tumors.
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Affiliation(s)
| | - Arindam Bose
- Dana-Farber Cancer Institute, Boston, MA, United States
| | - Wei-Chih Tsai
- Dana-Farber Cancer Institute, Boston, MA, United States
| | | | - Huy Nguyen
- Dana-Farber Cancer Institute, Boston, MA, United States
| | - Jia Zhou
- Dana-Farber Cancer Institute, Boston, MA, United States
| | - Kalindi Parmar
- Dana-Farber Cancer Institute, Boston, Massachusetts, United States
| | | | - Joyce F Liu
- Dana-Farber Cancer Institute, Boston, United States
| | | | | | - David Kozono
- Dana-Farber Cancer Institute, Boston, MA, United States
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Patterson-Fortin J, Bose A, Tsai WC, Grochala C, Nguyen H, Zhou J, Parmar K, Lazaro JB, Liu J, McQueen K, Shapiro GI, Kozono D, D'Andrea AD. Abstract 796: Dual inhibition of NHEJ and MMEJ induces synthetic lethality in TP53 mutant cancers. Cancer Res 2022. [DOI: 10.1158/1538-7445.am2022-796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
DNA repair pathway inhibitors are a new class of anti-cancer drugs that are advancing in clinical trials. While inhibitors of targets in the Non-Homologous End Joining (NHEJ) DNA repair pathway, such as DNA-dependent protein kinase (DNA-PK), are available for clinical use, it remains unclear which cancers are vulnerable to these agents. In a genome-wide CRISPR knockout screen with the DNA-PK inhibitor M3814, we identify loss of POLQ, encoding polymerase theta, and other genes in the microhomology-mediated end-joining (MMEJ) pathway as key predictors of sensitivity to DNA-PK inhibition, whereas loss of TP53 conferred resistance to DNA-PK inhibition. Inhibition of DNA-PK led to increased DNA double strand break end-resection, increased expression of polymerase theta, and activation of MMEJ repair. Combined DNA-PK inhibition by M3814 and polymerase theta inhibition by novobiocin resulted in synthetic lethality mediated by the accumulation of resected DNA and apoptosis. Significantly, this drug combination efficiently killed TP53-deficient human patient-derived xenografts and the corresponding tumor organoids. Taken together, our results provide a rationale for the combination of an inhibitor of DNA-PK mediated NHEJ and an inhibitor of polymerase theta mediated MMEJ in an anti-cancer trial. If DNA-PK is inhibited, cancers develop a hyper-dependence on MMEJ and an upregulation of DNA double strand break end resection and polymerase theta expression. Similarly, P53-deficiency which confers resistance to DNA-PK inhibition, also leads to a hyper-dependence on MMEJ and an upregulation of polymerase theta expression. Thus, a combination of DNA-PK and polymerase theta inhibitors may provide a precision treatment strategy for TP53-mutant solid tumors, known to account for 50% of newly diagnosed cancers.
Citation Format: Jeffrey Patterson-Fortin, Arindam Bose, Wei-Chih Tsai, Carter Grochala, Huy Nguyen, Jia Zhou, Kalindi Parmar, Jean-Bernard Lazaro, Joyce Liu, Kelsey McQueen, Geoffrey I. Shapiro, David Kozono, Alan D. D'Andrea. Dual inhibition of NHEJ and MMEJ induces synthetic lethality in TP53 mutant cancers [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2022; 2022 Apr 8-13. Philadelphia (PA): AACR; Cancer Res 2022;82(12_Suppl):Abstract nr 796.
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Affiliation(s)
| | | | | | | | - Huy Nguyen
- 1Dana-Farber Cancer Institute, Boston, MA
| | - Jia Zhou
- 1Dana-Farber Cancer Institute, Boston, MA
| | | | | | - Joyce Liu
- 1Dana-Farber Cancer Institute, Boston, MA
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Bose A, Peebles J, Walsh CA, Frenje JA, Kabadi NV, Adrian PJ, Sutcliffe GD, Gatu Johnson M, Frank CA, Davies JR, Betti R, Glebov VY, Marshall FJ, Regan SP, Stoeckl C, Campbell EM, Sio H, Moody J, Crilly A, Appelbe BD, Chittenden JP, Atzeni S, Barbato F, Forte A, Li CK, Seguin FH, Petrasso RD. Effect of Strongly Magnetized Electrons and Ions on Heat Flow and Symmetry of Inertial Fusion Implosions. Phys Rev Lett 2022; 128:195002. [PMID: 35622051 DOI: 10.1103/physrevlett.128.195002] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 02/24/2022] [Accepted: 03/31/2022] [Indexed: 06/15/2023]
Abstract
This Letter presents the first observation on how a strong, 500 kG, externally applied B field increases the mode-two asymmetry in shock-heated inertial fusion implosions. Using a direct-drive implosion with polar illumination and imposed field, we observed that magnetization produces a significant increase in the implosion oblateness (a 2.5× larger P2 amplitude in x-ray self-emission images) compared with reference experiments with identical drive but with no field applied. The implosions produce strongly magnetized electrons (ω_{e}τ_{e}≫1) and ions (ω_{i}τ_{i}>1) that, as shown using simulations, restrict the cross field heat flow necessary for lateral distribution of the laser and shock heating from the implosion pole to the waist, causing the enhanced mode-two shape.
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Affiliation(s)
- A Bose
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
- Department of Physics and Astronomy, University of Delaware, Newark, Delaware, USA
| | - J Peebles
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York, USA
| | - C A Walsh
- Lawrence Livermore National Laboratory, Livermore, California, USA
| | - J A Frenje
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - N V Kabadi
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - P J Adrian
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - G D Sutcliffe
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - M Gatu Johnson
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - C A Frank
- Department of Physics and Astronomy, University of Delaware, Newark, Delaware, USA
| | - J R Davies
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York, USA
| | - R Betti
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York, USA
| | - V Yu Glebov
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York, USA
| | - F J Marshall
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York, USA
| | - S P Regan
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York, USA
| | - C Stoeckl
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York, USA
| | - E M Campbell
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York, USA
| | - H Sio
- Lawrence Livermore National Laboratory, Livermore, California, USA
| | - J Moody
- Lawrence Livermore National Laboratory, Livermore, California, USA
| | - A Crilly
- Blackett Laboratory, Imperial College, London, United Kingdom
| | - B D Appelbe
- Blackett Laboratory, Imperial College, London, United Kingdom
| | - J P Chittenden
- Blackett Laboratory, Imperial College, London, United Kingdom
| | - S Atzeni
- Dipartimento SBAI, Universita di Roma La Sapienza, Rome, Italy
| | - F Barbato
- Dipartimento SBAI, Universita di Roma La Sapienza, Rome, Italy
| | - A Forte
- Dipartimento SBAI, Universita di Roma La Sapienza, Rome, Italy
- Department of Physics, University of Oxford, Oxford, United Kingdom
| | - C K Li
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - F H Seguin
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - R D Petrasso
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
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Muduli N, Bose A, Das C, Prusty SK, Mandal S, Das D, Si SC. Evaluation of Anti-Ulcer and Anti-Diarrhoeal Activities of the Ayurvedic Formulation Udumbara Ghanasatwa. Indian J Pharm Sci 2022. [DOI: 10.36468/pharmaceutical-sciences.894] [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: 11/22/2022] Open
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Kabadi NV, Simpson R, Adrian PJ, Bose A, Frenje JA, Gatu Johnson M, Lahmann B, Li CK, Parker CE, Séguin FH, Sutcliffe GD, Petrasso RD, Atzeni S, Eriksson J, Forrest C, Fess S, Glebov VY, Janezic R, Mannion OM, Rinderknecht HG, Rosenberg MJ, Stoeckl C, Kagan G, Hoppe M, Luo R, Schoff M, Shuldberg C, Sio HW, Sanchez J, Hopkins LB, Schlossberg D, Hahn K, Yeamans C. Thermal decoupling of deuterium and tritium during the inertial confinement fusion shock-convergence phase. Phys Rev E 2021; 104:L013201. [PMID: 34412205 DOI: 10.1103/physreve.104.l013201] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 06/23/2021] [Indexed: 11/07/2022]
Abstract
A series of thin glass-shell shock-driven DT gas-filled capsule implosions was conducted at the OMEGA laser facility. These experiments generate conditions relevant to the central plasma during the shock-convergence phase of ablatively driven inertial confinement fusion (ICF) implosions. The spectral temperatures inferred from the DTn and DDn spectra are most consistent with a two-ion-temperature plasma, where the initial apparent temperature ratio, T_{T}/T_{D}, is 1.5. This is an experimental confirmation of the long-standing conjecture that plasma shocks couple energy directly proportional to the species mass in multi-ion plasmas. The apparent temperature ratio trend with equilibration time matches expected thermal equilibration described by hydrodynamic theory. This indicates that deuterium and tritium ions have different energy distributions for the time period surrounding shock convergence in ignition-relevant ICF implosions.
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Affiliation(s)
- N V Kabadi
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - R Simpson
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - P J Adrian
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - A Bose
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - J A Frenje
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - M Gatu Johnson
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - B Lahmann
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - C K Li
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - C E Parker
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - F H Séguin
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - G D Sutcliffe
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - R D Petrasso
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - S Atzeni
- Dipartimento SBAI, Universit'a degli Studi di Roma "La Sapienza," Via Antonio Scarpa 14, 00161, Roma, Italy
| | - J Eriksson
- Department of Physics and Astronomy, Uppsala University, SE-752 37 Uppsala, Sweden
| | - C Forrest
- University of Rochester Laboratory for Laser Energetics, Rochester, New York 14623, USA
| | - S Fess
- University of Rochester Laboratory for Laser Energetics, Rochester, New York 14623, USA
| | - V Yu Glebov
- University of Rochester Laboratory for Laser Energetics, Rochester, New York 14623, USA
| | - R Janezic
- University of Rochester Laboratory for Laser Energetics, Rochester, New York 14623, USA
| | - O M Mannion
- University of Rochester Laboratory for Laser Energetics, Rochester, New York 14623, USA
| | - H G Rinderknecht
- University of Rochester Laboratory for Laser Energetics, Rochester, New York 14623, USA
| | - M J Rosenberg
- University of Rochester Laboratory for Laser Energetics, Rochester, New York 14623, USA
| | - C Stoeckl
- University of Rochester Laboratory for Laser Energetics, Rochester, New York 14623, USA
| | - G Kagan
- Centre for Inertial Fusion Studies, The Blackett Laboratory, Imperial College, London SW7 2AZ, United Kingdom
| | - M Hoppe
- General Atomics, San Diego, California 92121, USA
| | - R Luo
- General Atomics, San Diego, California 92121, USA
| | - M Schoff
- General Atomics, San Diego, California 92121, USA
| | - C Shuldberg
- General Atomics, San Diego, California 92121, USA
| | - H W Sio
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - J Sanchez
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - L Berzak Hopkins
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - D Schlossberg
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - K Hahn
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - C Yeamans
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
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Pearcy J, Kabadi N, Birkel A, Adrian P, Lahmann B, Reichelt B, Johnson TM, Sutcliffe G, Kunimune J, Gatu-Johnson M, Bose A, Li CK. Characterizing x-ray transmission through filters used in high energy density physics diagnostics. Rev Sci Instrum 2021; 92:063502. [PMID: 34243553 DOI: 10.1063/5.0043770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 05/13/2021] [Indexed: 06/13/2023]
Abstract
We report on the design and implementation of a new system used to characterize the energy-dependent x-ray transmission curve, Θ(E), through filters used in high-energy density physics diagnostics. Using an Amptek X-123-CdTe x-ray spectrometer together with a partially depleted silicon surface barrier detector, both the energy spectrum and total emission of an x-ray source have been accurately measured. By coupling these detectors with a custom PROTO-XRD x-ray source with interchangeable cathodes, accurate characterizations of Θ(E) for filters of varying materials and thicknesses have been obtained. The validity of the technique has been confirmed by accurately reproducing areal densities for high-purity filters with known x-ray transmission properties. In this paper, the experimental setup is described and the results of absorption calibrations performed on a variety of different filters are presented.
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Affiliation(s)
- J Pearcy
- Massachusetts Institute of Technology, Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - N Kabadi
- Massachusetts Institute of Technology, Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - A Birkel
- Massachusetts Institute of Technology, Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - P Adrian
- Massachusetts Institute of Technology, Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - B Lahmann
- Massachusetts Institute of Technology, Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - B Reichelt
- Massachusetts Institute of Technology, Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - T M Johnson
- Massachusetts Institute of Technology, Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - G Sutcliffe
- Massachusetts Institute of Technology, Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - J Kunimune
- Massachusetts Institute of Technology, Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - M Gatu-Johnson
- Massachusetts Institute of Technology, Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - A Bose
- Massachusetts Institute of Technology, Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - C K Li
- Massachusetts Institute of Technology, Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
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Das C, Bose A, Das D. Ayurvedic Balarista ameliorate anti-arthritic activity in adjuvant induced arthritic rats by inhibiting pro-inflammatory cytokines and oxidative stress. J Tradit Complement Med 2021; 11:228-237. [PMID: 34012869 PMCID: PMC8116770 DOI: 10.1016/j.jtcme.2020.04.006] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 04/13/2020] [Accepted: 04/29/2020] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND AND AIM Balarista is a fermented ayurvedic liquid preparation recommended as a good therapy for the treatment of rheumatoid arthritis. In the present investigation, the anti-arthritic activity of in-house Balarista formulation and marketed M1, M2, M3 and M4 Balarista formulations at the dose of 2.31 ml/kg were studied on Complete Freund's adjuvant-induced arthritic rat model. EXPERIMENTAL PROCEDURE Measurement of paw diameter, arthritic index, arthritic score, and body weight were made to assess the anti-arthritic activity. Alterations in hematological and biochemical parameters were carried out to ascertain the disease progression. The inflammatory mediators (TNF-α, IL-1β, and IL-6) were measured by the ELISA method. The oxidative stress parameters were evaluated in tissues of joint, liver, spleen and kidney. The histological and radiological changes in the ankle joint of rats were also studied. RESULTS AND CONCLUSION Administration of in-house and marketed formulations exhibited significant anti-arthritic activity by reducing all the arthritic parameters. The anomalous alterations in hematological and biochemical parameters were remarkably restored. The expression level of serum pro-inflammatory cytokines was significantly suppressed in treated animals. The oxidative stress, indicated by an increase in lipid peroxidation, decreased in antioxidant enzyme i.e. superoxide dismutase and catalase along with non-enzymatic reduced glutathione in tissues, were strongly counteracted by the formulation. Abnormal changes in arthritic ankle joints shown by X-ray and histological examination were significantly protected by the formulation. The present study suggests that the administration of in-house and marketed Balarista formulations have produced a significant anti-arthritic effect by inhibiting free radicals and inflammatory cytokines.
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Affiliation(s)
- C. Das
- Department of Pharmacognosy, School of Pharmaceutical Sciences, Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar, Odisha, 751029, India
| | - A. Bose
- Department of Pharmaceutical Analysis and Quality Assurance, School of Pharmaceutical Sciences, Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar, Odisha, 751029, India
| | - D. Das
- Department of Pharmacognosy, School of Pharmaceutical Sciences, Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar, Odisha, 751029, India
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Dadali T, Diers AR, Kazerounian S, Muthuswamy SK, Awate P, Ng R, Mogre S, Spencer C, Krumova K, Rockwell HE, McDaniel J, Chen EY, Gao F, Diedrich KT, Vemulapalli V, Rodrigues LO, Akmaev VR, Thapa K, Hidalgo M, Bose A, Vishnudas VK, Moser AJ, Granger E, Kiebish MA, Gesta S, Narain NR, Sarangarajan R. Elevated levels of mitochondrial CoQ 10 induce ROS-mediated apoptosis in pancreatic cancer. Sci Rep 2021; 11:5749. [PMID: 33707480 PMCID: PMC7952582 DOI: 10.1038/s41598-021-84852-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 02/22/2021] [Indexed: 12/22/2022] Open
Abstract
Reactive oxygen species (ROS) are implicated in triggering cell signalling events and pathways to promote and maintain tumorigenicity. Chemotherapy and radiation can induce ROS to elicit cell death allows for targeting ROS pathways for effective anti-cancer therapeutics. Coenzyme Q10 is a critical cofactor in the electron transport chain with complex biological functions that extend beyond mitochondrial respiration. This study demonstrates that delivery of oxidized Coenzyme Q10 (ubidecarenone) to increase mitochondrial Q-pool is associated with an increase in ROS generation, effectuating anti-cancer effects in a pancreatic cancer model. Consequent activation of cell death was observed in vitro in pancreatic cancer cells, and both human patient-derived organoids and tumour xenografts. The study is a first to demonstrate the effectiveness of oxidized ubidecarenone in targeting mitochondrial function resulting in an anti-cancer effect. Furthermore, these findings support the clinical development of proprietary formulation, BPM31510, for treatment of cancers with high ROS burden with potential sensitivity to ubidecarenone.
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Affiliation(s)
- Tulin Dadali
- BERG LLC, 500 Old Connecticut Path, Bldg B, 3rd Floor, Framingham, MA, 01710, USA
| | - Anne R Diers
- BERG LLC, 500 Old Connecticut Path, Bldg B, 3rd Floor, Framingham, MA, 01710, USA
| | - Shiva Kazerounian
- BERG LLC, 500 Old Connecticut Path, Bldg B, 3rd Floor, Framingham, MA, 01710, USA
| | - Senthil K Muthuswamy
- Department of Medicine, Cancer Research Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, 02215, USA
| | - Pallavi Awate
- BERG LLC, 500 Old Connecticut Path, Bldg B, 3rd Floor, Framingham, MA, 01710, USA
| | - Ryan Ng
- BERG LLC, 500 Old Connecticut Path, Bldg B, 3rd Floor, Framingham, MA, 01710, USA
| | - Saie Mogre
- BERG LLC, 500 Old Connecticut Path, Bldg B, 3rd Floor, Framingham, MA, 01710, USA
| | - Carrie Spencer
- BERG LLC, 500 Old Connecticut Path, Bldg B, 3rd Floor, Framingham, MA, 01710, USA
| | - Katerina Krumova
- BERG LLC, 500 Old Connecticut Path, Bldg B, 3rd Floor, Framingham, MA, 01710, USA
| | - Hannah E Rockwell
- BERG LLC, 500 Old Connecticut Path, Bldg B, 3rd Floor, Framingham, MA, 01710, USA
| | - Justice McDaniel
- BERG LLC, 500 Old Connecticut Path, Bldg B, 3rd Floor, Framingham, MA, 01710, USA
| | - Emily Y Chen
- BERG LLC, 500 Old Connecticut Path, Bldg B, 3rd Floor, Framingham, MA, 01710, USA
| | - Fei Gao
- BERG LLC, 500 Old Connecticut Path, Bldg B, 3rd Floor, Framingham, MA, 01710, USA
| | - Karl T Diedrich
- BERG LLC, 500 Old Connecticut Path, Bldg B, 3rd Floor, Framingham, MA, 01710, USA
| | - Vijetha Vemulapalli
- BERG LLC, 500 Old Connecticut Path, Bldg B, 3rd Floor, Framingham, MA, 01710, USA
| | - Leonardo O Rodrigues
- BERG LLC, 500 Old Connecticut Path, Bldg B, 3rd Floor, Framingham, MA, 01710, USA
| | - Viatcheslav R Akmaev
- BERG LLC, 500 Old Connecticut Path, Bldg B, 3rd Floor, Framingham, MA, 01710, USA
| | - Khampaseuth Thapa
- BERG LLC, 500 Old Connecticut Path, Bldg B, 3rd Floor, Framingham, MA, 01710, USA
| | - Manuel Hidalgo
- Department of Medicine, Cancer Research Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, 02215, USA
| | - Arindam Bose
- Department of Medicine, Cancer Research Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, 02215, USA
| | - Vivek K Vishnudas
- BERG LLC, 500 Old Connecticut Path, Bldg B, 3rd Floor, Framingham, MA, 01710, USA
| | - A James Moser
- Department of Medicine, Cancer Research Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, 02215, USA
| | - Elder Granger
- BERG LLC, 500 Old Connecticut Path, Bldg B, 3rd Floor, Framingham, MA, 01710, USA
| | - Michael A Kiebish
- BERG LLC, 500 Old Connecticut Path, Bldg B, 3rd Floor, Framingham, MA, 01710, USA
| | - Stephane Gesta
- BERG LLC, 500 Old Connecticut Path, Bldg B, 3rd Floor, Framingham, MA, 01710, USA
| | - Niven R Narain
- BERG LLC, 500 Old Connecticut Path, Bldg B, 3rd Floor, Framingham, MA, 01710, USA
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11
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Roychowdhury R, Rajput P, Kumar S, Kumar R, Bose A, Jha SN, Sharma TK, Dixit VK. Effect of germanium auto-diffusion on the bond lengths of Ga and P atoms in GaP/Ge(111) investigated by using X-ray absorption spectroscopy. J Synchrotron Radiat 2021; 28:480-489. [PMID: 33650560 DOI: 10.1107/s160057752001629x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 12/16/2020] [Indexed: 06/12/2023]
Abstract
The germanium auto-diffusion effects on the inter-atomic distance between the nearest neighbors of the Ga atom in GaP epilayers are investigated using high-resolution X-ray diffraction (HRXRD) and X-ray absorption spectroscopy. The GaP layers grown on Ge (111) are structurally coherent and relaxed but they show the presence of residual strain which is attributed to the auto-diffusion of Ge from the results of secondary ion mass spectrometry and electrochemical capacitance voltage measurements. Subsequently, the inter-atomic distances between the nearest neighbors of Ga atom in GaP are determined from X-ray absorption fine-structure spectra performed at the Ga K-edge. The estimated local bond lengths of Ga with its first and second nearest neighbors show asymmetric variation for the in-plane and out-of-plane direction of GaP/Ge(111). The magnitude and direction of in-plane and out-of-plane microscopic residual strain present in the GaP/Ge are calculated from the difference in bond lengths which explains the presence of macroscopic residual tensile strain estimated from HRXRD. Modified nearest neighbor configurations of Ga in the auto-diffused GaP epilayer are proposed for new possibilities within the GaP/Ge hetero-structure, such as the conversion from indirect to direct band structures and engineering the tensile strain quantum dot structures on (111) surfaces.
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Affiliation(s)
- R Roychowdhury
- Training School Complex, Homi Bhabha National Institute, Anushakti Nagar, Mumbai, India
| | - P Rajput
- Atomic and Molecular Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Shailendra Kumar
- UGC-DAE Consortium for Scientific Research, Indore, Madhya Pradesh, India
| | - R Kumar
- Training School Complex, Homi Bhabha National Institute, Anushakti Nagar, Mumbai, India
| | - A Bose
- Training School Complex, Homi Bhabha National Institute, Anushakti Nagar, Mumbai, India
| | - S N Jha
- Training School Complex, Homi Bhabha National Institute, Anushakti Nagar, Mumbai, India
| | - T K Sharma
- Training School Complex, Homi Bhabha National Institute, Anushakti Nagar, Mumbai, India
| | - V K Dixit
- Training School Complex, Homi Bhabha National Institute, Anushakti Nagar, Mumbai, India
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12
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Huang L, Bockorny B, Paul I, Akshinthala D, Frappart PO, Gandarilla O, Bose A, Sanchez-Gonzalez V, Rouse EE, Lehoux SD, Pandell N, Lim CM, Clohessy JG, Grossman J, Gonzalez R, Del Pino SP, Daaboul G, Sawhney MS, Freedman SD, Kleger A, Cummings RD, Emili A, Muthuswamy LB, Hidalgo M, Muthuswamy SK. PDX-derived organoids model in vivo drug response and secrete biomarkers. JCI Insight 2020; 5:135544. [PMID: 32990680 PMCID: PMC7710298 DOI: 10.1172/jci.insight.135544] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [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: 12/09/2019] [Accepted: 09/23/2020] [Indexed: 12/13/2022] Open
Abstract
Patient-derived organoid models are proving to be a powerful platform for both basic and translational studies. Here we conduct a methodical analysis of pancreatic ductal adenocarcinoma (PDAC) tumor organoid drug response in paired patient-derived xenograft (PDX) and PDX-derived organoid (PXO) models grown under WNT-free culture conditions. We report a specific relationship between area under the curve value of organoid drug dose response and in vivo tumor growth, irrespective of the drug treatment. In addition, we analyzed the glycome of PDX and PXO models and demonstrate that PXOs recapitulate the in vivo glycan landscape. In addition, we identify a core set of 57 N-glycans detected in all 10 models that represent 50%-94% of the relative abundance of all N-glycans detected in each of the models. Last, we developed a secreted biomarker discovery pipeline using media supernatant of organoid cultures and identified potentially new extracellular vesicle (EV) protein markers. We validated our findings using plasma samples from patients with PDAC, benign gastrointestinal diseases, and chronic pancreatitis and discovered that 4 EV proteins are potential circulating biomarkers for PDAC. Thus, we demonstrate the utility of organoid cultures to not only model in vivo drug responses but also serve as a powerful platform for discovering clinically actionable serologic biomarkers.
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Affiliation(s)
- Ling Huang
- Cancer Center and
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Bruno Bockorny
- Cancer Center and
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Indranil Paul
- Departments of Biology and Biochemistry, Boston University, Boston, Massachusetts, USA
| | - Dipikaa Akshinthala
- Cancer Center and
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | | | - Omar Gandarilla
- Cancer Center and
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Arindam Bose
- Cancer Center and
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | | | | | | | - Nicole Pandell
- Cancer Center and
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Christine M. Lim
- Cancer Center and
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - John G. Clohessy
- Cancer Center and
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Joseph Grossman
- Cancer Center and
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Raul Gonzalez
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Sofia Perea Del Pino
- Cancer Center and
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | | | - Mandeep S. Sawhney
- Cancer Center and
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Steven D. Freedman
- Cancer Center and
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Alexander Kleger
- Department of Internal Medicine I, University Hospital Ulm, Ulm, Germany
| | | | - Andrew Emili
- Departments of Biology and Biochemistry, Boston University, Boston, Massachusetts, USA
| | - Lakshmi B. Muthuswamy
- Cancer Center and
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Manuel Hidalgo
- Cancer Center and
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Senthil K. Muthuswamy
- Cancer Center and
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
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13
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Ceurvorst L, Betti R, Casner A, Gopalaswamy V, Bose A, Hu SX, Campbell EM, Regan SP, McCoy CA, Karasik M, Peebles J, Tabak M, Theobald W. Hybrid target design for imprint mitigation in direct-drive inertial confinement fusion. Phys Rev E 2020; 101:063207. [PMID: 32688486 DOI: 10.1103/physreve.101.063207] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 05/13/2020] [Indexed: 11/07/2022]
Abstract
A target design for mitigating the Rayleigh-Taylor instability is proposed for use in high energy density and direct-drive inertial confinement fusion experiments. In this scheme, a thin gold membrane is offset from the main target by several-hundred microns. A strong picket on the drive beams is incident upon this membrane to produce x rays which generate the initial shock through the target. The main drive follows shortly thereafter, passing through the ablated shell and directly driving the main target. The efficacy of this scheme is demonstrated through experiments performed at the OMEGA EP facility, showing a reduction of the Rayleigh-Taylor instability growth which scales exponentially with frequency, suppressing development by at least a factor of 5 for all wavelengths below 100 μm. This results in a delay in the time of target perforation by ∼40%.
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Affiliation(s)
- L Ceurvorst
- Université de Bordeaux-CNRS-CEA, CELIA, UMR 5107, F-33405 Talence, France
| | - R Betti
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - A Casner
- Université de Bordeaux-CNRS-CEA, CELIA, UMR 5107, F-33405 Talence, France
| | - V Gopalaswamy
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - A Bose
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - S X Hu
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - E M Campbell
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - S P Regan
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - C A McCoy
- Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
| | - M Karasik
- Plasma Physics Division, Naval Research Laboratory, Washington, DC 20375, USA
| | - J Peebles
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - M Tabak
- Lawrence Livermore National Laboratory, Livermore, California 94551, USA
| | - W Theobald
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
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14
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Lee HT, Sanford S, Paul T, Choe J, Bose A, Opresko PL, Myong S. Position-Dependent Effect of Guanine Base Damage and Mutations on Telomeric G-Quadruplex and Telomerase Extension. Biochemistry 2020; 59:2627-2639. [PMID: 32578995 DOI: 10.1021/acs.biochem.0c00434] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Telomeres are hot spots for mutagenic oxidative and methylation base damage due to their high guanine content. We used single-molecule fluorescence resonance energy transfer detection and biochemical assays to determine how different positions and types of guanine damage and mutations alter telomeric G-quadruplex structure and telomerase activity. We compared 15 modifications, including 8-oxoguanine (8oxoG), O-6-methylguanine (O6mG), and all three possible point mutations (G to A, T, and C) at the 3' three terminal guanine positions of a telomeric G-quadruplex, which is the critical access point for telomerase. We found that G-quadruplex structural instability was induced in the order C < T < A ≤ 8oxoG < O6mG, with the perturbation caused by O6mG far exceeding the perturbation caused by other base alterations. For all base modifications, the central G position was the most destabilizing among the three terminal guanines. While the structural disruption by 8oxoG and O6mG led to concomitant increases in telomerase binding and extension activity, the structural perturbation by point mutations (A, T, and C) did not, due to disrupted annealing between the telomeric overhang and the telomerase RNA template. Repositioning the same mutations away from the terminal guanines caused both G-quadruplex structural instability and elevated telomerase activity. Our findings demonstrate how a single-base modification drives structural alterations and telomere lengthening in a position-dependent manner. Furthermore, our results suggest a long-term and inheritable effect of telomeric DNA damage that can lead to telomere lengthening, which potentially contributes to oncogenesis.
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Affiliation(s)
- Hui-Ting Lee
- Thomas C. Jenkins Department of Biophysics, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Samantha Sanford
- Department of Environmental and Occupational Health, University of Pittsburgh Graduate School of Public Health and University of Pittsburgh Medical Center Hillman Cancer Center, Pittsburgh, Pennsylvania 15261, United States
| | - Tapas Paul
- Thomas C. Jenkins Department of Biophysics, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Joshua Choe
- Thomas C. Jenkins Department of Biophysics, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Arindam Bose
- Department of Environmental and Occupational Health, University of Pittsburgh Graduate School of Public Health and University of Pittsburgh Medical Center Hillman Cancer Center, Pittsburgh, Pennsylvania 15261, United States
| | - Patricia L Opresko
- Department of Environmental and Occupational Health, University of Pittsburgh Graduate School of Public Health and University of Pittsburgh Medical Center Hillman Cancer Center, Pittsburgh, Pennsylvania 15261, United States
| | - Sua Myong
- Thomas C. Jenkins Department of Biophysics, Johns Hopkins University, Baltimore, Maryland 21218, United States.,Physics Frontier Center (Center for Physics of Living Cells), University of Illinois, 1110 West Green Street, Urbana, Illinois 61801, United States
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15
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Bose A, Li D, Migliore R, Werner P, Nemeth G, Laszlovsky I. The efficacy and safety of the novel antipsychotic cariprazine in acute exacerbation of schizophrenia. Eur Psychiatry 2020. [DOI: 10.1016/s0924-9338(11)73059-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
IntroductionCariprazine is a potent D3/D2 partial agonist with preferential binding to D3 receptors.Objectives/aimsTo evaluate the efficacy and safety of cariprazine versus placebo in acute exacerbation of schizophrenia.MethodsA multinational, multicenter, double-blind, randomized, placebo- and active-controlled, fixed-dose trial in patients aged 18–60 years with DSM-IV-TR-defined schizophrenia, current psychotic episode < 2 weeks, and PANSS total score between 80 and 120. After 1-week washout, patients received 6-weeks treatment (cariprazine 1.5, 3.0, or 4.5 mg/d, risperidone 4.0 mg/d, or placebo) and 2-week safety follow-up. Risperidone was used to assess assay sensitivity. Primary and secondary efficacy: baseline to Week 6 change (LOCF) in PANSS total and CGI-S scores, respectively. Safety: adverse events (AEs), vital signs, laboratory measures, extrapyramidal symptom (EPS) scales.ResultsOf 732 randomized patients, 64% completed the study. Mean baseline PANSS (98) and CGI-S scores (4.8) were similar across groups. PANSS total score improvement at Week 6 was statistically significant versus placebo for cariprazine 1.5 mg/d, 3.0 mg/d, and 4.5 mg/d (placebo-adjusted improvements: −7.5, −8.9, −10.4, respectively; P < .001; LOCF) and risperidone (−15.0, P < .001, LOCF); significant improvement on CGI-S was demonstrated for all active treatments (P < .05). The most common cariprazine AEs were insomnia, EPS, akathisia, sedation, nausea, dizziness, and constipation. AE discontinuation rates were 15% for placebo, 10%, 5% and 8% for cariprazine 1.5, 3.0, and 4.5 mg/d, respectively, and 9% for risperidone 4.0 mg/d.ConclusionsCariprazine significantly improved PANSS and CGI-S scores versus placebo in acute exacerbation of schizophrenia and was generally well tolerated.
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16
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Naik S, Bose A, Mehta U, Arumugham S, Kesavan M, Ganesan V, Thirthalli J. P146 Cathodal tDCS perturbation-based motor cortical plasticity and its cognitive correlates in schizophrenia: A sham-controlled study. Clin Neurophysiol 2020. [DOI: 10.1016/j.clinph.2019.12.257] [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: 11/25/2022]
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17
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Omran A, Hutchison I, Ridout F, Bose A, Maroni R, Dhanda J, Hammond D, Moynihan C, Ciniglio A, Chiu G. Current perspectives on the surgical management of mandibular third molars in the United Kingdom: the need for further research. Br J Oral Maxillofac Surg 2020; 58:348-354. [DOI: 10.1016/j.bjoms.2020.01.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 01/06/2020] [Indexed: 10/24/2022]
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18
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Hariram V, Bose A, Seralathan S. Dataset on optimized biodiesel production from seeds of Vitis vinifera using ANN, RSM and ANFIS. Data Brief 2019; 25:104298. [PMID: 31406908 PMCID: PMC6685693 DOI: 10.1016/j.dib.2019.104298] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 07/12/2019] [Accepted: 07/15/2019] [Indexed: 10/26/2022] Open
Abstract
This dataset disclose the investigational data on the extraction of bio-oil from seeds of Vitis vinifera through combination of mechanical pressing and soxhlet solvent extractor. Biodiesel is produced through single stage base catalysed transesterification process due to lower free fatty acid content in the Vitis vinifera bio-oil. Independent variable process parameters like molar ratio, reaction time and catalyst concentration are optimized using Artificial Neural Network, Response Surface Methodology and Adaptive Neuro-Fuzzy Interference System to predict the maximum biodiesel yield and the results are compared with the experimental data. Response Surface Methodology predicted a maximum Vitis vinifera biodiesel yield of 97.62% at methanol to oil molar ratio 0.2758 v/v, catalyst concentration 1.045 gm of NaOH and reaction duration of 1.11 hrs which is also confirmed with experimental results.
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Affiliation(s)
- V Hariram
- School of Mechanical Sciences, Hindustan Institute of Technology and Science, Chennai, Tamilnadu, India
| | - A Bose
- School of Mechanical Sciences, Hindustan Institute of Technology and Science, Chennai, Tamilnadu, India
| | - S Seralathan
- School of Mechanical Sciences, Hindustan Institute of Technology and Science, Chennai, Tamilnadu, India
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19
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Shanbhag V, Sreeraj S V, Bose A, Narayanswamy J, Rao N, Kesavan M, Venkatasubramanian G. Effect of tACS on Working Memory and Processing speed in Schizophrenia: An Open Label Study. Brain Stimul 2019. [DOI: 10.1016/j.brs.2018.12.710] [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: 11/15/2022] Open
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20
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Shivakumar V, Agarwal S, Sreeraj V, Narayanaswamy J, Bose A, Kalmady S, Shenoy S, Venkatasubramanian G. tDCS for schizophrenia: Clinical studies from India. Brain Stimul 2019. [DOI: 10.1016/j.brs.2018.12.642] [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: 10/27/2022] Open
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21
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Bhalerao G, Selvaraj S, Parlikar R, Sreeraj V, Shivakumar V, Damodharan D, Chhabra H, Bose A, Narayanaswamy J, Rao N, Venkatasubramanian G. White Matter Correlates of Electric Field Activity in HD-tDCS for Schizophrenia: A Computational Neuromodeling Study. Brain Stimul 2019. [DOI: 10.1016/j.brs.2018.12.649] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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22
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Agarwal S, Shivakumar V, Narayanaswamy J, Sreeraj V, Bose A, Nawani H, Kalmady S, Nitsche M, Venkatasubramanian G. TDCS in schizophrenia: mechanistic basis for investigative and interventional applications. Brain Stimul 2019. [DOI: 10.1016/j.brs.2018.12.624] [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: 10/27/2022] Open
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23
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Parlikar R, Bhalerao G, Selvaraj S, Dinakaran D, Chhabra H, Sreeraj V, Shivakumar V, Bose A, Narayanaswamy J, Rao N, Venkatasubramanian G. Effect of High-definition transcranial direct current stimulation (HD-tDCS) on auditory hallucinations in schizophrenia: Correlates with Gray Matter Volume. Brain Stimul 2019. [DOI: 10.1016/j.brs.2018.12.654] [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: 11/26/2022] Open
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24
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Gopalaswamy V, Betti R, Knauer JP, Luciani N, Patel D, Woo KM, Bose A, Igumenshchev IV, Campbell EM, Anderson KS, Bauer KA, Bonino MJ, Cao D, Christopherson AR, Collins GW, Collins TJB, Davies JR, Delettrez JA, Edgell DH, Epstein R, Forrest CJ, Froula DH, Glebov VY, Goncharov VN, Harding DR, Hu SX, Jacobs-Perkins DW, Janezic RT, Kelly JH, Mannion OM, Maximov A, Marshall FJ, Michel DT, Miller S, Morse SFB, Palastro J, Peebles J, Radha PB, Regan SP, Sampat S, Sangster TC, Sefkow AB, Seka W, Shah RC, Shmyada WT, Shvydky A, Stoeckl C, Solodov AA, Theobald W, Zuegel JD, Johnson MG, Petrasso RD, Li CK, Frenje JA. Tripled yield in direct-drive laser fusion through statistical modelling. Nature 2019; 565:581-586. [PMID: 30700868 DOI: 10.1038/s41586-019-0877-0] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 12/04/2018] [Indexed: 11/09/2022]
Abstract
Focusing laser light onto a very small target can produce the conditions for laboratory-scale nuclear fusion of hydrogen isotopes. The lack of accurate predictive models, which are essential for the design of high-performance laser-fusion experiments, is a major obstacle to achieving thermonuclear ignition. Here we report a statistical approach that was used to design and quantitatively predict the results of implosions of solid deuterium-tritium targets carried out with the 30-kilojoule OMEGA laser system, leading to tripling of the fusion yield to its highest value so far for direct-drive laser fusion. When scaled to the laser energies of the National Ignition Facility (1.9 megajoules), these targets are predicted to produce a fusion energy output of about 500 kilojoules-several times larger than the fusion yields currently achieved at that facility. This approach could guide the exploration of the vast parameter space of thermonuclear ignition conditions and enhance our understanding of laser-fusion physics.
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Affiliation(s)
- V Gopalaswamy
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA. .,Department of Mechanical Engineering, University of Rochester, Rochester, NY, USA.
| | - R Betti
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA.,Department of Mechanical Engineering, University of Rochester, Rochester, NY, USA.,Department of Physics and Astronomy, University of Rochester, Rochester, NY, USA
| | - J P Knauer
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - N Luciani
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA.,Department of Mechanical Engineering, University of Rochester, Rochester, NY, USA.,Dipartimento di Energetica, Politecnico di Milano, Milan, Italy
| | - D Patel
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA.,Department of Mechanical Engineering, University of Rochester, Rochester, NY, USA
| | - K M Woo
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA.,Department of Physics and Astronomy, University of Rochester, Rochester, NY, USA
| | - A Bose
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA.,Massachusetts Institute of Technology, Cambridge, MA, USA
| | - I V Igumenshchev
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - E M Campbell
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - K S Anderson
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - K A Bauer
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - M J Bonino
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - D Cao
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - A R Christopherson
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA.,Department of Mechanical Engineering, University of Rochester, Rochester, NY, USA
| | - G W Collins
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - T J B Collins
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - J R Davies
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - J A Delettrez
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - D H Edgell
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - R Epstein
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - C J Forrest
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - D H Froula
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - V Y Glebov
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - V N Goncharov
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - D R Harding
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - S X Hu
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - D W Jacobs-Perkins
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - R T Janezic
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - J H Kelly
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - O M Mannion
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA.,Department of Physics and Astronomy, University of Rochester, Rochester, NY, USA
| | - A Maximov
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA.,Department of Mechanical Engineering, University of Rochester, Rochester, NY, USA
| | - F J Marshall
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - D T Michel
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - S Miller
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA.,Department of Mechanical Engineering, University of Rochester, Rochester, NY, USA
| | - S F B Morse
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - J Palastro
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - J Peebles
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - P B Radha
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - S P Regan
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - S Sampat
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - T C Sangster
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - A B Sefkow
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - W Seka
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - R C Shah
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - W T Shmyada
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - A Shvydky
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - C Stoeckl
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - A A Solodov
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - W Theobald
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - J D Zuegel
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, USA
| | - M Gatu Johnson
- Massachusetts Institute of Technology, Cambridge, MA, USA
| | - R D Petrasso
- Massachusetts Institute of Technology, Cambridge, MA, USA
| | - C K Li
- Massachusetts Institute of Technology, Cambridge, MA, USA
| | - J A Frenje
- Massachusetts Institute of Technology, Cambridge, MA, USA
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Sio H, Frenje JA, Le A, Atzeni S, Kwan TJT, Gatu Johnson M, Kagan G, Stoeckl C, Li CK, Parker CE, Forrest CJ, Glebov V, Kabadi NV, Bose A, Rinderknecht HG, Amendt P, Casey DT, Mancini R, Taitano WT, Keenan B, Simakov AN, Chacón L, Regan SP, Sangster TC, Campbell EM, Seguin FH, Petrasso RD. Observations of Multiple Nuclear Reaction Histories and Fuel-Ion Species Dynamics in Shock-Driven Inertial Confinement Fusion Implosions. Phys Rev Lett 2019; 122:035001. [PMID: 30735406 DOI: 10.1103/physrevlett.122.035001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 08/27/2018] [Indexed: 06/09/2023]
Abstract
Fuel-ion species dynamics in hydrodynamiclike shock-driven DT^{3}He-filled inertial confinement fusion implosion is quantitatively assessed for the first time using simultaneously measured D^{3}He and DT reaction histories. These reaction histories are measured with the particle x-ray temporal diagnostic, which captures the relative timing between different nuclear burns with unprecedented precision (∼10 ps). The observed 50±10 ps earlier D^{3}He reaction history timing (relative to DT) cannot be explained by average-ion hydrodynamic simulations and is attributed to fuel-ion species separation between the D, T, and ^{3}He ions during shock convergence and rebound. At the onset of the shock burn, inferred ^{3}He/T fuel ratio in the burn region using the measured reaction histories is much higher as compared to the initial gas-filled ratio. As T and ^{3}He have the same mass but different charge, these results indicate that the charge-to-mass ratio plays an important role in driving fuel-ion species separation during strong shock propagation even for these hydrodynamiclike plasmas.
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Affiliation(s)
- H Sio
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - J A Frenje
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - A Le
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - S Atzeni
- Dipartimento SBAI, Università degli Studi di Roma "La Sapienza," Via Antonio Scarpa 14, 00161, Roma, Italy
| | - T J T Kwan
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - M Gatu Johnson
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - G Kagan
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - C Stoeckl
- Laboratory for Laser Energetics, Rochester, New York 14623, USA
| | - C K Li
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - C E Parker
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - C J Forrest
- Laboratory for Laser Energetics, Rochester, New York 14623, USA
| | - V Glebov
- Laboratory for Laser Energetics, Rochester, New York 14623, USA
| | - N V Kabadi
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - A Bose
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | | | - P Amendt
- Lawrence Livermore National Laboratory, Livermore, California 94551, USA
| | - D T Casey
- Lawrence Livermore National Laboratory, Livermore, California 94551, USA
| | - R Mancini
- Physics Department, University of Nevada, Reno, Nevada, 89557, USA
| | - W T Taitano
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - B Keenan
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - A N Simakov
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - L Chacón
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - S P Regan
- Laboratory for Laser Energetics, Rochester, New York 14623, USA
| | - T C Sangster
- Laboratory for Laser Energetics, Rochester, New York 14623, USA
| | - E M Campbell
- Laboratory for Laser Energetics, Rochester, New York 14623, USA
| | - F H Seguin
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - R D Petrasso
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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27
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Bose A, Jain V, Kawthekar G, Chhabra C, Hemvani N, Chitnis DS. The Importance of Serial Time Point Quantitative Assessment of Cardiac Troponin I in the Diagnosis of Acute Myocardial Damage. Indian J Crit Care Med 2018; 22:629-631. [PMID: 30294127 PMCID: PMC6161573 DOI: 10.4103/ijccm.ijccm_8_16] [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] [Indexed: 11/06/2022] Open
Abstract
OBJECTIVE The present study was aimed to establish a threshold value for cardiac troponin I (cTnI) for nonacute coronary syndrome (ACS) participants from the local population and also to determine the importance of serial time point estimation of cTnI in acute myocardial infarction (AMI), non-ST-elevated MI (NSTEMI), and unstable angina cases. METHODS The present study included 194 cases, admitted in ICCU with the complaint of anginal pain; 31 were diagnosed with AMI with typical electrocardiography (ECG) changes; whereas, 48 cases were diagnosed with NSTEMI. The latter group of cases was selected for the time point study of cTnI release at 0-4 h, 6-12 h, 72 h, and 144 h of admission. cTnI levels were assessed using the Abbott ARCHITECT i1000SR system. RESULTS ACS was clinically ruled out in 98 cases, and cTnI level for them was used to decide cTnI threshold for the non-ACS group. cTnI level was checked in 17 cases of unstable angina. The threshold value of cTnI for non-ACS participants was 0.1 ng/ml and can be considered as cut-off value for the regional population. The data suggested that the peak of cTnI levels in most of the AMI cases reached during 6-12 h. The cTnI levels were lower than 0.1 ng/ml, and no significant change in ECG was noticed in 17 cases of unstable angina. CONCLUSION The present study suggested that the repeat of cTnI assay after 4-6 h of admission is required if the initial value is <3 ng/ml.
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Affiliation(s)
- Arindam Bose
- Department of Pathology, Choithram Hospital and Research Centre, Indore, Madhya Pradesh, India
| | - Vidyut Jain
- Department of Cardiology, Choithram Hospital and Research Centre, Indore, Madhya Pradesh, India
| | - Girish Kawthekar
- Department of Cardiology, Choithram Hospital and Research Centre, Indore, Madhya Pradesh, India
| | - Chandrabala Chhabra
- Department of Cardiology, Choithram Hospital and Research Centre, Indore, Madhya Pradesh, India
| | - Nanda Hemvani
- Department of Pathology, Choithram Hospital and Research Centre, Indore, Madhya Pradesh, India
| | - Dhananjay S. Chitnis
- Department of Pathology, Choithram Hospital and Research Centre, Indore, Madhya Pradesh, India
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Abstract
An experiment is described which attempts to derive quantitative indicators regarding the potential relevance predictability of the intermediate stimuli used to represent documents in information retrieval systems. In effect, since the decision to peruse an entire document is often predicated upon the examination of one »level of processing« of the document (e.g., the citation and/or abstract), it became interesting to analyze the properties of what constitutes »relevance«. However, prior to such an analysis, an even more elementary step had to be made, namely, to determine what portions of a document should be examined.An evaluation of the ability of intermediate response products (IRPs), functioning as cues to the information content of full documents, to predict the relevance determination that would be subsequently made on these documents by motivated users of information retrieval systems, was made under controlled experimental conditions. The hypothesis that there might be other intermediate response products (selected extracts from the document, i.e., first paragraph, last paragraph, and the combination of first and last paragraph), that would be as representative of the full document as the traditional IRPs (citation and abstract) was tested systematically. The results showed that:1. there is no significant difference among the several IRP treatment groups on the number of cue evaluations of relevancy which match the subsequent user relevancy decision on the document;2. first and last paragraph combinations have consistently predicted relevancy to a higher degree than the other IRPs;3. abstracts were undistinguished as predictors; and4. the apparent high predictability rating for citations was not substantive.Some of these results are quite different than would be expected from previous work with unmotivated subjects.
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29
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Regan SP, Goncharov VN, Sangster TC, Campbell EM, Betti R, Anderson KS, Bernat T, Bose A, Boehly TR, Bonino MJ, Cao D, Chapman R, Collins TJB, Craxton RS, Davis AK, Delettrez JA, Edgell DH, Epstein R, Farrell M, Forrest CJ, Frenje JA, Froula DH, Johnson MG, Gibson C, Glebov VY, Greenwood A, Harding DR, Hohenberger M, Hu SX, Huang H, Hund J, Igumenshchev IV, Jacobs-Perkins DW, Janezic RT, Karasik M, Keck RL, Kelly JH, Kessler TJ, Knauer JP, Kosc TZ, Loucks SJ, Marozas JA, Marshall FJ, McCrory RL, McKenty PW, Meyerhofer DD, Michel DT, Myatt JF, Obenschain SP, Petrasso RD, Petta N, Radha PB, Rosenberg MJ, Schmitt AJ, Schmitt MJ, Schoff M, Seka W, Shmayda WT, Shoup MJ, Shvydky A, Solodov AA, Stoeckl C, Sweet W, Taylor C, Taylor R, Theobald W, Ulreich J, Wittman MD, Woo KM, Zuegel JD. The National Direct-Drive Program: OMEGA to the National Ignition Facility. Fusion Science and Technology 2017. [DOI: 10.1080/15361055.2017.1397487] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- S. P. Regan
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - V. N. Goncharov
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - T. C. Sangster
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - E. M. Campbell
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - R. Betti
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - K. S. Anderson
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - T. Bernat
- Schafer Corporation, Livermore, California
| | - A. Bose
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - T. R. Boehly
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - M. J. Bonino
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - D. Cao
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - R. Chapman
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - T. J. B. Collins
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - R. S. Craxton
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - A. K. Davis
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - J. A. Delettrez
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - D. H. Edgell
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - R. Epstein
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | | | - C. J. Forrest
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - J. A. Frenje
- Massachusetts Institute of Technology, Plasma Science and Fusion Center, Cambridge, Massachusetts
| | - D. H. Froula
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - M. Gatu Johnson
- Massachusetts Institute of Technology, Plasma Science and Fusion Center, Cambridge, Massachusetts
| | - C. Gibson
- General Atomics, San Diego, California
| | - V. Yu. Glebov
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | | | - D. R. Harding
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - M. Hohenberger
- Lawrence Livermore National Laboratory, Livermore, California
| | - S. X. Hu
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - H. Huang
- General Atomics, San Diego, California
| | - J. Hund
- Schafer Corporation, Livermore, California
| | - I. V. Igumenshchev
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | | | - R. T. Janezic
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - M. Karasik
- Naval Research Laboratory, Washington, District of Columbia
| | - R. L. Keck
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - J. H. Kelly
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - T. J. Kessler
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - J. P. Knauer
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - T. Z. Kosc
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - S. J. Loucks
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - J. A. Marozas
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - F. J. Marshall
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - R. L. McCrory
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - P. W. McKenty
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | | | - D. T. Michel
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - J. F. Myatt
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | | | - R. D. Petrasso
- Massachusetts Institute of Technology, Plasma Science and Fusion Center, Cambridge, Massachusetts
| | - N. Petta
- Schafer Corporation, Livermore, California
| | - P. B. Radha
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - M. J. Rosenberg
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - A. J. Schmitt
- Naval Research Laboratory, Washington, District of Columbia
| | - M. J. Schmitt
- Los Alamos National Laboratory, Los Alamos, New Mexico
| | - M. Schoff
- General Atomics, San Diego, California
| | - W. Seka
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - W. T. Shmayda
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - M. J. Shoup
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - A. Shvydky
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - A. A. Solodov
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - C. Stoeckl
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - W. Sweet
- General Atomics, San Diego, California
| | - C. Taylor
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - R. Taylor
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - W. Theobald
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - J. Ulreich
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - M. D. Wittman
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - K. M. Woo
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
| | - J. D. Zuegel
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York
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Lee HT, Bose A, Lee CY, Opresko PL, Myong S. Molecular mechanisms by which oxidative DNA damage promotes telomerase activity. Nucleic Acids Res 2017; 45:11752-11765. [PMID: 28981887 PMCID: PMC5714237 DOI: 10.1093/nar/gkx789] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [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: 05/11/2017] [Accepted: 09/14/2017] [Indexed: 11/13/2022] Open
Abstract
Telomeres are highly susceptible to oxidative DNA damage, which if left unrepaired can lead to dysregulation of telomere length homeostasis. Here we employed single molecule FRET, single molecule pull-down and biochemical analysis to investigate how the most common oxidative DNA lesions, 8-oxoguanine (8oxoG) and thymine glycol (Tg), regulate the structural properties of telomeric DNA and telomerase extension activity. In contrast to 8oxoG which disrupts the telomeric DNA structure, Tg exhibits substantially reduced perturbation of G-quadruplex folding. As a result, 8oxoG induces high accessibility, whereas Tg retains limited accessibility, of telomeric G-quadruplex DNA to complementary single stranded DNA and to telomere binding protein POT1. Surprisingly, the Tg lesion stimulates telomerase loading and activity to a similar degree as an 8oxoG lesion. We demonstrate that this unexpected stimulation arises from Tg-induced conformational alterations and dynamics in telomeric DNA. Despite impacting structure by different mechanisms, both 8oxoG and Tg enhance telomerase binding and extension activity to the same degree, potentially contributing to oncogenesis.
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Affiliation(s)
- Hui-Ting Lee
- Thomas C. Jenkins Department of Biophysics, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Arindam Bose
- Department of Environmental and Occupational Health, University of Pittsburgh Graduate School of Public Health and UPMC Hillman Cancer Center, Pittsburgh, PA 15261, USA
| | - Chun-Ying Lee
- Thomas C. Jenkins Department of Biophysics, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Patricia L Opresko
- Department of Environmental and Occupational Health, University of Pittsburgh Graduate School of Public Health and UPMC Hillman Cancer Center, Pittsburgh, PA 15261, USA
| | - Sua Myong
- Thomas C. Jenkins Department of Biophysics, Johns Hopkins University, Baltimore, MD, 21218, USA.,Physics Frontier Center (Center for Physics of Living Cells), University of Illinois, 1110 W. Green St., Urbana, IL 61801, USA
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Bose A, Shivakumar V, Chhabra H, Parlikar R, Sreeraj VS, Dinakaran D, Narayanaswamy JC, Venkatasubramanian G. Feasibility and Clinical Utility of High-definition Transcranial Direct Current Stimulation in the Treatment of Persistent Hallucinations in Schizophrenia. East Asian Arch Psychiatry 2017; 27:162-164. [PMID: 29259147] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Persistent auditory verbal hallucination is a clinically significant problem in schizophrenia. Recent studies suggest a promising role for add-on transcranial direct current stimulation (tDCS) in treatment. An optimised version of tDCS, namely high-definition tDCS (HD-tDCS), uses smaller electrodes arranged in a 4x1 ring configuration and may offer more focal and predictable neuromodulation than conventional tDCS. This case report illustrates the feasibility and clinical utility of add-on HD-tDCS over the left temporoparietal junction in a 4x1 ring configuration to treat persistent auditory verbal hallucination in schizophrenia.
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Affiliation(s)
- A Bose
- WISER Program, Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - V Shivakumar
- WISER Program, Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - H Chhabra
- WISER Program, Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - R Parlikar
- WISER Program, Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - V S Sreeraj
- WISER Program, Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - D Dinakaran
- WISER Program, Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - J C Narayanaswamy
- WISER Program, Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - G Venkatasubramanian
- WISER Program, Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
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Kirchhoff CF, Wang XM, Conlon HD, Anderson S, Ryan AM, Bose A. Biosimilars: Key regulatory considerations and similarity assessment tools. Biotechnol Bioeng 2017; 114:2696-2705. [PMID: 28842986 PMCID: PMC5698755 DOI: 10.1002/bit.26438] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 08/21/2017] [Accepted: 08/23/2017] [Indexed: 12/18/2022]
Abstract
A biosimilar drug is defined in the US Food and Drug Administration (FDA) guidance document as a biopharmaceutical that is highly similar to an already licensed biologic product (referred to as the reference product) notwithstanding minor differences in clinically inactive components and for which there are no clinically meaningful differences in purity, potency, and safety between the two products. The development of biosimilars is a challenging, multistep process. Typically, the assessment of similarity involves comprehensive structural and functional characterization throughout the development of the biosimilar in an iterative manner and, if required by the local regulatory authority, an in vivo nonclinical evaluation, all conducted with direct comparison to the reference product. In addition, comparative clinical pharmacology studies are conducted with the reference product. The approval of biosimilars is highly regulated although varied across the globe in terms of nomenclature and the precise criteria for demonstrating similarity. Despite varied regulatory requirements, differences between the proposed biosimilar and the reference product must be supported by strong scientific evidence that these differences are not clinically meaningful. This review discusses the challenges faced by pharmaceutical companies in the development of biosimilars.
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Affiliation(s)
- Carol F. Kirchhoff
- Pfizer IncGlobal Technology ServicesBiotechnology and Aseptic Sciences GroupChesterfieldMissouri
| | | | - Hugh D. Conlon
- Pfizer IncAnalytical Research and DevelopmentAndoverMassachusetts
| | | | - Anne M. Ryan
- Pfizer IncDrug Safety Research and DevelopmentGrotonConnecticut
| | - Arindam Bose
- Pfizer IncBioTherapeutics Pharmaceutical SciencesGrotonConnecticut
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33
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Garcia-Exposito L, Bournique E, Bergoglio V, Bose A, Barroso-Gonzalez J, Zhang S, Roncaioli JL, Lee M, Wallace CT, Watkins SC, Opresko PL, Hoffmann JS, O'Sullivan RJ. Proteomic Profiling Reveals a Specific Role for Translesion DNA Polymerase η in the Alternative Lengthening of Telomeres. Cell Rep 2017; 17:1858-1871. [PMID: 27829156 PMCID: PMC5406014 DOI: 10.1016/j.celrep.2016.10.048] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [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: 07/24/2016] [Revised: 09/18/2016] [Accepted: 10/14/2016] [Indexed: 11/22/2022] Open
Abstract
Cancer cells rely on the activation of telomerase or the alternative lengthening of telomeres (ALT) pathways for telomere maintenance and survival. ALT involves homologous recombination (HR)-dependent exchange and/or HR-associated synthesis of telomeric DNA. Utilizing proximity-dependent biotinylation (BioID), we sought to determine the proteome of telomeres in cancer cells that employ these distinct telomere elongation mechanisms. Our analysis reveals that multiple DNA repair networks converge at ALT telomeres. These include the specialized translesion DNA synthesis (TLS) proteins FANCJ-RAD18-PCNA and, most notably, DNA polymerase eta (Polη). We observe that the depletion of Polη leads to increased ALT activity and late DNA polymerase δ (Polδ)-dependent synthesis of telomeric DNA in mitosis. We propose that Polη fulfills an important role in managing replicative stress at ALT telomeres, maintaining telomere recombination at tolerable levels and stimulating DNA synthesis by Polδ.
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Affiliation(s)
- Laura Garcia-Exposito
- Department of Pharmacology and Chemical Biology, University of Pittsburgh Cancer Institute, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Elodie Bournique
- CRCT, Université de Toulouse, Inserm, CNRS, UPS Equipe Labellisée Ligue Contre le Cancer, Laboratoire d'Excellence Toulouse Cancer, 2 Avenue Hubert Curien, 31037 Toulouse, France
| | - Valérie Bergoglio
- CRCT, Université de Toulouse, Inserm, CNRS, UPS Equipe Labellisée Ligue Contre le Cancer, Laboratoire d'Excellence Toulouse Cancer, 2 Avenue Hubert Curien, 31037 Toulouse, France
| | - Arindam Bose
- Department of Environmental and Occupational Health, University of Pittsburgh Cancer Institute, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Jonathan Barroso-Gonzalez
- Department of Pharmacology and Chemical Biology, University of Pittsburgh Cancer Institute, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Sufang Zhang
- Department of Biochemistry and Molecular Biology, New York Medical College, Valhalla, NY 10595, USA
| | - Justin L Roncaioli
- Department of Pharmacology and Chemical Biology, University of Pittsburgh Cancer Institute, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Marietta Lee
- Department of Biochemistry and Molecular Biology, New York Medical College, Valhalla, NY 10595, USA
| | - Callen T Wallace
- Department of Cell Biology, University of Pittsburgh Cancer Institute, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Simon C Watkins
- Department of Cell Biology, University of Pittsburgh Cancer Institute, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Patricia L Opresko
- Department of Environmental and Occupational Health, University of Pittsburgh Cancer Institute, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Jean-Sébastien Hoffmann
- CRCT, Université de Toulouse, Inserm, CNRS, UPS Equipe Labellisée Ligue Contre le Cancer, Laboratoire d'Excellence Toulouse Cancer, 2 Avenue Hubert Curien, 31037 Toulouse, France
| | - Roderick J O'Sullivan
- Department of Pharmacology and Chemical Biology, University of Pittsburgh Cancer Institute, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15213, USA.
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Shang WL, Betti R, Hu SX, Woo K, Hao L, Ren C, Christopherson AR, Bose A, Theobald W. Electron Shock Ignition of Inertial Fusion Targets. Phys Rev Lett 2017; 119:195001. [PMID: 29219482 DOI: 10.1103/physrevlett.119.195001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Indexed: 06/07/2023]
Abstract
It is shown that inertial confinement fusion targets designed with low implosion velocities can be shock-ignited using laser-plasma interaction generated hot electrons (hot-e's) to obtain high energy gains. These designs are robust to multimode asymmetries and are predicted to ignite even for significantly distorted implosions. Electron shock ignition requires tens of kilojoules of hot-e's which can be produced only at a large laser facility like the National Ignition Facility, with the laser-to-hot-e conversion efficiency greater than 10% at laser intensities ∼10^{16} W/cm^{2}.
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Affiliation(s)
- W L Shang
- Fusion Science Center and Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
- Departments of Mechanical Engineering and Physics and Astronomy, University of Rochester, Rochester, New York 14623, USA
| | - R Betti
- Fusion Science Center and Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
- Departments of Mechanical Engineering and Physics and Astronomy, University of Rochester, Rochester, New York 14623, USA
| | - S X Hu
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - K Woo
- Fusion Science Center and Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
- Departments of Mechanical Engineering and Physics and Astronomy, University of Rochester, Rochester, New York 14623, USA
| | - L Hao
- Departments of Mechanical Engineering and Physics and Astronomy, University of Rochester, Rochester, New York 14623, USA
| | - C Ren
- Departments of Mechanical Engineering and Physics and Astronomy, University of Rochester, Rochester, New York 14623, USA
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - A R Christopherson
- Fusion Science Center and Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
- Departments of Mechanical Engineering and Physics and Astronomy, University of Rochester, Rochester, New York 14623, USA
| | - A Bose
- Fusion Science Center and Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
- Departments of Mechanical Engineering and Physics and Astronomy, University of Rochester, Rochester, New York 14623, USA
| | - W Theobald
- Fusion Science Center and Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
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Bose A, Nawani H, Agarwal S, Shivakumar V, Narayanaswamy J, Kumar D, Venkatasubramanian G. Effect of fronto-temporal transcranial direct current stimulation on corollary discharge in schizophrenia: A randomized, double-blind, sham-controlled study. Brain Stimul 2017. [DOI: 10.1016/j.brs.2017.01.217] [Citation(s) in RCA: 1] [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: 11/26/2022] Open
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Chhabra H, Shivakumar V, Subbanna M, Bose A, Agrawal M, Sreeraj V, Kalmady S, Narayanaswamy J, Debnath M, Venkatasubramanian G. Influence of COMT and NRG-1 gene polymorphisms on the effect of tDCS on Auditory Verbal Hallucinations in Schizophrenia. Brain Stimul 2017. [DOI: 10.1016/j.brs.2017.01.215] [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: 12/01/2022] Open
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37
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Sreeraj V, Bose A, Chabbra H, Shivakumar V, Agarwal S, Janardhanan C, Rao N, Muralidharan K, Varambally S, Venkatasubramanian G. Effect of single-session tDCS on cognition in Schizophrenia: A randomized double-blind cross-over study. Brain Stimul 2017. [DOI: 10.1016/j.brs.2017.01.276] [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: 10/20/2022] Open
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Fouquerel E, Lormand J, Bose A, Lee HT, Kim GS, Li J, Sobol RW, Freudenthal BD, Myong S, Opresko PL. Oxidative guanine base damage regulates human telomerase activity. Nat Struct Mol Biol 2016; 23:1092-1100. [PMID: 27820808 PMCID: PMC5140714 DOI: 10.1038/nsmb.3319] [Citation(s) in RCA: 121] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 10/11/2016] [Indexed: 12/19/2022]
Abstract
Changes in telomere length are associated with degenerative diseases and cancer. Oxidative stress and DNA damage have been linked to both positive and negative alterations in telomere length and integrity. Here we examined how the common oxidative lesion 8-oxo-7,8-dihydro-2′-deoxyguanine (8-oxoG) regulates telomere elongation by telomerase. When present in the deoxynucleoside triphosphate pool as 8-oxodGTP, telomerase utilization of the oxidized nucleotide during telomere extension is mutagenic and terminates further elongation. Depletion of the enzyme that removes oxidized dNTPs, MTH1, increases telomere dysfunction and cell death in telomerase positive cancer cells harboring shortened telomeres. In contrast, a pre-existing 8-oxoG within the telomeric DNA sequence promotes telomerase activity by destabilizing G-quadruplex structure in the DNA. We show that the mechanism by which 8-oxoG arises in the telomere, either by insertion of oxidized nucleotides or by direct reaction with free radicals, dictates whether telomerase is inhibited or stimulated and thereby, mediates the biological outcome.
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Affiliation(s)
- Elise Fouquerel
- Department of Environmental and Occupational Health, University of Pittsburgh Graduate School of Public Health, and University of Pittsburgh Cancer Institute, Pittsburgh, PA, USA
| | - Justin Lormand
- Department of Environmental and Occupational Health, University of Pittsburgh Graduate School of Public Health, and University of Pittsburgh Cancer Institute, Pittsburgh, PA, USA
| | - Arindam Bose
- Department of Environmental and Occupational Health, University of Pittsburgh Graduate School of Public Health, and University of Pittsburgh Cancer Institute, Pittsburgh, PA, USA
| | - Hui-Ting Lee
- Department of Biophysics, Johns Hopkins University, Baltimore, MD, USA
| | - Grace S Kim
- Department of Bioengineering, University of Illinois, Urbana, IL, USA
| | - Jianfeng Li
- University of South Alabama Mitchell Cancer Institute, Mobile, AL, USA
| | - Robert W Sobol
- University of South Alabama Mitchell Cancer Institute, Mobile, AL, USA
| | - Bret D Freudenthal
- Department of Biochemistry and Molecular Biology, University of Kansas Medical Center, Kansas City, KS, USA
| | - Sua Myong
- Department of Biophysics, Johns Hopkins University, Baltimore, MD, USA.,Department of Bioengineering, University of Illinois, Urbana, IL, USA
| | - Patricia L Opresko
- Department of Environmental and Occupational Health, University of Pittsburgh Graduate School of Public Health, and University of Pittsburgh Cancer Institute, Pittsburgh, PA, USA.,Center for Nucleic Acids Science and Technology, Carnegie Mellon University, Pittsburgh, PA, USA
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Abstract
![]()
With the discovery
of translesion synthesis DNA polymerases, great
strides have been made in the last two decades in understanding the
mode of replication of various DNA lesions in prokaryotes and eukaryotes.
A database search indicated that approximately 2000 articles on this
topic have been published in this period. This includes research involving
genetic and structural studies as well as in vitro experiments using purified DNA polymerases and accessory proteins.
It is a daunting task to comprehend this exciting and rapidly emerging
area of research. Even so, as the majority of DNA damage occurs at
2′-deoxyguanosine residues, this perspective attempts to summarize
a subset of this field, focusing on the most relevant eukaryotic DNA
polymerases responsible for their bypass.
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Affiliation(s)
- Ashis K Basu
- Department of Chemistry, University of Connecticut , Storrs, Connecticut 06269, United States
| | - Paritosh Pande
- Department of Chemistry, University of Connecticut , Storrs, Connecticut 06269, United States
| | - Arindam Bose
- Department of Chemistry, University of Connecticut , Storrs, Connecticut 06269, United States
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Bose A, Millsap AD, DeLeon A, Rizzo C, Basu AK. Translesion Synthesis of the N(2)-2'-Deoxyguanosine Adduct of the Dietary Mutagen IQ in Human Cells: Error-Free Replication by DNA Polymerase κ and Mutagenic Bypass by DNA Polymerases η, ζ, and Rev1. Chem Res Toxicol 2016; 29:1549-59. [PMID: 27490094 PMCID: PMC5031085 DOI: 10.1021/acs.chemrestox.6b00221] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Indexed: 12/18/2022]
Abstract
Translesion synthesis (TLS) of the N(2)-2'-deoxyguanosine (dG-N(2)-IQ) adduct of the carcinogen 2-amino-3-methylimidazo[4,5-f]quinoline (IQ) was investigated in human embryonic kidney 293T cells by replicating plasmid constructs in which the adduct was individually placed at each guanine (G1, G2, or G3) of the NarI sequence (5'-CG1G2CG3CC-3'). TLS efficiency was 38%, 29%, and 25% for the dG-N(2)-IQ located at G1, G2, and G3, respectively, which suggests that dG-N(2)-IQ is bypassed more efficiently by one or more DNA polymerases at G1 than at either G2 or G3. TLS efficiency was decreased 8-35% in cells with knockdown of pol η, pol κ, pol ι, pol ζ, or Rev1. Up to 75% reduction in TLS occurred when pol η, pol ζ, and Rev1 were simultaneously knocked down, suggesting that these three polymerases play important roles in dG-N(2)-IQ bypass. Mutation frequencies (MFs) of dG-N(2)-IQ at G1, G2, and G3 were 23%, 17%, and 11%, respectively, exhibiting a completely reverse trend of the previously reported MF of the C8-dG adduct of IQ (dG-C8-IQ), which is most mutagenic at G3 ( ( 2015 ) Nucleic Acids Res. 43 , 8340 - 8351 ). The major type of mutation induced by dG-N(2)-IQ was targeted G → T, as was reported for dG-C8-IQ. In each site, knockdown of pol κ resulted in an increase in MF, whereas MF was reduced when pol η, pol ι, pol ζ, or Rev1 was knocked down. The reduction in MF was most pronounced when pol η, pol ζ, and Rev1 were simultaneously knocked down and especially when the adduct was located at G3, where MF was reduced by 90%. We conclude that pol κ predominantly performs error-free TLS of the dG-N(2)-IQ adduct, whereas pols η, pol ζ, and Rev1 cooperatively carry out the error-prone TLS. However, in vitro experiments using yeast pol ζ and κ showed that the former was inefficient in full-length primer extension on dG-N(2)-IQ templates, whereas the latter was efficient in both error-free and error-prone extensions. We believe that the observed differences between the in vitro experiments using purified DNA polymerases, and the cellular results may arise from several factors including the crucial roles played by the accessory proteins in TLS.
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Affiliation(s)
- Arindam Bose
- Department
of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Amy D. Millsap
- Department
of Chemistry, Vanderbilt University, Nashville, Tennessee 37232, United States
| | - Arnie DeLeon
- Department
of Chemistry, Vanderbilt University, Nashville, Tennessee 37232, United States
| | - Carmelo
J. Rizzo
- Department
of Chemistry, Vanderbilt University, Nashville, Tennessee 37232, United States
| | - Ashis K. Basu
- Department
of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
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Bose A, Chhabra CB, Chamania S, Hemvani N, Chitnis DS. Cardiac troponin I: A potent biomarker for myocardial damage assessment following high voltage electric burn. Indian J Plast Surg 2016; 49:406-409. [PMID: 28216824 PMCID: PMC5288919 DOI: 10.4103/0970-0358.197225] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Myocardial infarction (MI) following high voltage electric burn is very rare, and its pathogenesis remains controversial. Electrical burns represent only 4% of all burns. Hence, clinical managements have taken a slow pace in developing. The recent guidelines laid down by the cardiology societies include cardiac troponin I (cTnI) as the gold standard marker for the assessment of myocardial damage assessment. Two patients were admitted to our hospital at the different time with the same kind of high voltage electric burn. Both patients had complained with chest discomfort during admission, and cardiac parameter assessment was done for both the patients. cTnI was also measured for both patients, and marked increase in the values was seen within 5 h of onset of myocardial damage and got into normal range within 72 h. Myocardial damage following electric burn needs to be suspected and assessed as early as possible. Hence, cTnI should be the valuable tool to detect the severity of myocardial damage incurred in the electric burn cases.
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Affiliation(s)
- Arindam Bose
- Department of Pathology, Choithram Hospital and Research Centre, Indore, Madhya Pradesh, India
| | - Chandra B. Chhabra
- Department of Cardiology, Choithram Hospital and Research Centre, Indore, Madhya Pradesh, India
| | - Shobha Chamania
- Department of Burn Surgery, Choithram Hospital and Research Centre, Indore, Madhya Pradesh, India
| | - Nanda Hemvani
- Department of Pathology, Choithram Hospital and Research Centre, Indore, Madhya Pradesh, India
| | - Dhananjay S. Chitnis
- Department of Pathology, Choithram Hospital and Research Centre, Indore, Madhya Pradesh, India
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Regan SP, Goncharov VN, Igumenshchev IV, Sangster TC, Betti R, Bose A, Boehly TR, Bonino MJ, Campbell EM, Cao D, Collins TJB, Craxton RS, Davis AK, Delettrez JA, Edgell DH, Epstein R, Forrest CJ, Frenje JA, Froula DH, Gatu Johnson M, Glebov VY, Harding DR, Hohenberger M, Hu SX, Jacobs-Perkins D, Janezic R, Karasik M, Keck RL, Kelly JH, Kessler TJ, Knauer JP, Kosc TZ, Loucks SJ, Marozas JA, Marshall FJ, McCrory RL, McKenty PW. Publisher's Note: Demonstration of Fuel Hot-Spot Pressure in Excess of 50 Gbar for Direct-Drive, Layered Deuterium-Tritium Implosions on OMEGA [Phys. Rev. Lett. 117, 025001 (2016)]. Phys Rev Lett 2016; 117:059903. [PMID: 27517797 DOI: 10.1103/physrevlett.117.059903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Indexed: 06/06/2023]
Abstract
This corrects the article DOI: 10.1103/PhysRevLett.117.025001.
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Regan SP, Goncharov VN, Igumenshchev IV, Sangster TC, Betti R, Bose A, Boehly TR, Bonino MJ, Campbell EM, Cao D, Collins TJB, Craxton RS, Davis AK, Delettrez JA, Edgell DH, Epstein R, Forrest CJ, Frenje JA, Froula DH, Gatu Johnson M, Glebov VY, Harding DR, Hohenberger M, Hu SX, Jacobs-Perkins D, Janezic R, Karasik M, Keck RL, Kelly JH, Kessler TJ, Knauer JP, Kosc TZ, Loucks SJ, Marozas JA, Marshall FJ, McCrory RL, McKenty PW, Meyerhofer DD, Michel DT, Myatt JF, Obenschain SP, Petrasso RD, Radha PB, Rice B, Rosenberg MJ, Schmitt AJ, Schmitt MJ, Seka W, Shmayda WT, Shoup MJ, Shvydky A, Skupsky S, Solodov AA, Stoeckl C, Theobald W, Ulreich J, Wittman MD, Woo KM, Yaakobi B, Zuegel JD. Demonstration of Fuel Hot-Spot Pressure in Excess of 50 Gbar for Direct-Drive, Layered Deuterium-Tritium Implosions on OMEGA. Phys Rev Lett 2016; 117:025001. [PMID: 27447511 DOI: 10.1103/physrevlett.117.025001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Indexed: 06/06/2023]
Abstract
A record fuel hot-spot pressure P_{hs}=56±7 Gbar was inferred from x-ray and nuclear diagnostics for direct-drive inertial confinement fusion cryogenic, layered deuterium-tritium implosions on the 60-beam, 30-kJ, 351-nm OMEGA Laser System. When hydrodynamically scaled to the energy of the National Ignition Facility, these implosions achieved a Lawson parameter ∼60% of the value required for ignition [A. Bose et al., Phys. Rev. E 93, 011201(R) (2016)], similar to indirect-drive implosions [R. Betti et al., Phys. Rev. Lett. 114, 255003 (2015)], and nearly half of the direct-drive ignition-threshold pressure. Relative to symmetric, one-dimensional simulations, the inferred hot-spot pressure is approximately 40% lower. Three-dimensional simulations suggest that low-mode distortion of the hot spot seeded by laser-drive nonuniformity and target-positioning error reduces target performance.
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Affiliation(s)
- S P Regan
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - V N Goncharov
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - I V Igumenshchev
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - T C Sangster
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - R Betti
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
- Fusion Science Center, University of Rochester, Rochester, New York 14623, USA
| | - A Bose
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
- Fusion Science Center, University of Rochester, Rochester, New York 14623, USA
| | - T R Boehly
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - M J Bonino
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - E M Campbell
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - D Cao
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - T J B Collins
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - R S Craxton
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - A K Davis
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - J A Delettrez
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - D H Edgell
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - R Epstein
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - C J Forrest
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - J A Frenje
- Massachusetts Institute of Technology, Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - D H Froula
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - M Gatu Johnson
- Massachusetts Institute of Technology, Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - V Yu Glebov
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - D R Harding
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - M Hohenberger
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - S X Hu
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - D Jacobs-Perkins
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - R Janezic
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - M Karasik
- Naval Research Laboratory, Washington, D.C. 20375, USA
| | - R L Keck
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - J H Kelly
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - T J Kessler
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - J P Knauer
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - T Z Kosc
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - S J Loucks
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - J A Marozas
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - F J Marshall
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - R L McCrory
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - P W McKenty
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - D D Meyerhofer
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - D T Michel
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - J F Myatt
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | | | - R D Petrasso
- Massachusetts Institute of Technology, Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - P B Radha
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - B Rice
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - M J Rosenberg
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - A J Schmitt
- Naval Research Laboratory, Washington, D.C. 20375, USA
| | - M J Schmitt
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - W Seka
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - W T Shmayda
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - M J Shoup
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - A Shvydky
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - S Skupsky
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - A A Solodov
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - C Stoeckl
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - W Theobald
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - J Ulreich
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - M D Wittman
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - K M Woo
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
- Fusion Science Center, University of Rochester, Rochester, New York 14623, USA
| | - B Yaakobi
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - J D Zuegel
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
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von Kummer R, Mocco J, Zaidat O, Khatri P, Gupta R, Frei D, Lopes D, Shownkeen H, Berkhemer O, Meyer D, Chauke M, Hak S, Kuo S, Buell H, Bose A, Sit S, Yoo A. O-025 The Superiority of Thrombectomy over IV rtPA Monotherapy May be Associated with Thrombus Length – Results of the THERAPY Trial. J Neurointerv Surg 2016. [DOI: 10.1136/neurintsurg-2016-012589.25] [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: 11/04/2022]
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Zaidat O, Mehta B, Yoo A, von Kummer R, Khatri P, Gupta R, Lopes D, Frei D, Shownkeen H, Meyer D, Bach V, Buell H, Kuo S, Bose A, Sit S, Mocco J. O-003 Time to Stroke Intervention is Reduced When CT Angiography is Performed Immediately after Non-contrast CT. J Neurointerv Surg 2016. [DOI: 10.1136/neurintsurg-2016-012589.3] [Citation(s) in RCA: 1] [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: 11/04/2022]
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von Kummer R, Frei D, Yoo A, Zaidat O, Khatri P, Gupta R, Lopes D, Shownkeen H, Meyer D, Buell H, Bach V, Kuo S, Bose A, Sit S, Mocco J. O-011 Symptomatic Intracranial Hemorrhage After Reperfusion Therapy – Impact of Definition on its Frequency. J Neurointerv Surg 2016. [DOI: 10.1136/neurintsurg-2016-012589.11] [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: 11/03/2022]
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Bose A, Woo KM, Betti R, Campbell EM, Mangino D, Christopherson AR, McCrory RL, Nora R, Regan SP, Goncharov VN, Sangster TC, Forrest CJ, Frenje J, Gatu Johnson M, Glebov VY, Knauer JP, Marshall FJ, Stoeckl C, Theobald W. Core conditions for alpha heating attained in direct-drive inertial confinement fusion. Phys Rev E 2016; 94:011201. [PMID: 27575069 DOI: 10.1103/physreve.94.011201] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Indexed: 06/06/2023]
Abstract
It is shown that direct-drive implosions on the OMEGA laser have achieved core conditions that would lead to significant alpha heating at incident energies available on the National Ignition Facility (NIF) scale. The extrapolation of the experimental results from OMEGA to NIF energy assumes only that the implosion hydrodynamic efficiency is unchanged at higher energies. This approach is independent of the uncertainties in the physical mechanism that degrade implosions on OMEGA, and relies solely on a volumetric scaling of the experimentally observed core conditions. It is estimated that the current best-performing OMEGA implosion [Regan et al., Phys. Rev. Lett. 117, 025001 (2016)10.1103/PhysRevLett.117.025001] extrapolated to a 1.9 MJ laser driver with the same illumination configuration and laser-target coupling would produce 125 kJ of fusion energy with similar levels of alpha heating observed in current highest performing indirect-drive NIF implosions.
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Affiliation(s)
- A Bose
- Fusion Science Center, University of Rochester, Rochester, New York 14623, USA
- Laboratory for Laser Energetics, University of Rochester, Rochester New York 14623, USA
| | - K M Woo
- Fusion Science Center, University of Rochester, Rochester, New York 14623, USA
- Laboratory for Laser Energetics, University of Rochester, Rochester New York 14623, USA
| | - R Betti
- Fusion Science Center, University of Rochester, Rochester, New York 14623, USA
- Laboratory for Laser Energetics, University of Rochester, Rochester New York 14623, USA
| | - E M Campbell
- Laboratory for Laser Energetics, University of Rochester, Rochester New York 14623, USA
| | - D Mangino
- Laboratory for Laser Energetics, University of Rochester, Rochester New York 14623, USA
| | - A R Christopherson
- Fusion Science Center, University of Rochester, Rochester, New York 14623, USA
- Laboratory for Laser Energetics, University of Rochester, Rochester New York 14623, USA
| | - R L McCrory
- Laboratory for Laser Energetics, University of Rochester, Rochester New York 14623, USA
| | - R Nora
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - S P Regan
- Laboratory for Laser Energetics, University of Rochester, Rochester New York 14623, USA
| | - V N Goncharov
- Laboratory for Laser Energetics, University of Rochester, Rochester New York 14623, USA
| | - T C Sangster
- Laboratory for Laser Energetics, University of Rochester, Rochester New York 14623, USA
| | - C J Forrest
- Laboratory for Laser Energetics, University of Rochester, Rochester New York 14623, USA
| | - J Frenje
- Massachusetts Institute of Technology, Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - M Gatu Johnson
- Massachusetts Institute of Technology, Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - V Yu Glebov
- Laboratory for Laser Energetics, University of Rochester, Rochester New York 14623, USA
| | - J P Knauer
- Laboratory for Laser Energetics, University of Rochester, Rochester New York 14623, USA
| | - F J Marshall
- Laboratory for Laser Energetics, University of Rochester, Rochester New York 14623, USA
| | - C Stoeckl
- Laboratory for Laser Energetics, University of Rochester, Rochester New York 14623, USA
| | - W Theobald
- Fusion Science Center, University of Rochester, Rochester, New York 14623, USA
- Laboratory for Laser Energetics, University of Rochester, Rochester New York 14623, USA
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Bose A, Surugihalli C, Pande P, Champeil E, Basu AK. Comparative Error-Free and Error-Prone Translesion Synthesis of N(2)-2'-Deoxyguanosine Adducts Formed by Mitomycin C and Its Metabolite, 2,7-Diaminomitosene, in Human Cells. Chem Res Toxicol 2016; 29:933-9. [PMID: 27082015 PMCID: PMC4871107 DOI: 10.1021/acs.chemrestox.6b00087] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [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] [Indexed: 11/28/2022]
Abstract
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Mitomycin C (MC) is a cytotoxic and
mutagenic antitumor agent that
alkylates DNA upon reductive activation. 2,7-Diaminomitosene (2,7-DAM)
is a major metabolite of MC in tumor cells, which also alkylates DNA.
MC forms seven DNA adducts, including monoadducts and inter- and intrastrand
cross-links, whereas 2,7-DAM forms two monoadducts. Herein, the biological
effects of the dG-N2 adducts formed by
MC and 2,7-DAM have been compared by constructing single-stranded
plasmids containing these adducts and replicating them in human embryonic
kidney 293T cells. Translesion synthesis (TLS) efficiencies of dG-N2-MC and dG-N2-2,7-DAM
were 38 ± 3 and 27 ± 3%, respectively, compared to that
of a control plasmid. This indicates that both adducts block DNA synthesis
and that dG-N2-2,7-DAM is a stronger replication
block than dG-N2-MC. TLS of each adducted
construct was reduced upon siRNA knockdown of pol η, pol κ,
or pol ζ. For both adducts, the most significant reduction occurred
with knockdown of pol κ, which suggests that pol κ plays
a major role in TLS of these dG-N2 adducts.
Analysis of the progeny showed that both adducts were mutagenic, and
the mutation frequencies (MF) of dG-N2-MC and dG-N2-2,7-DAM were 18 ±
3 and 10 ± 1%, respectively. For both adducts, the major type
of mutation was G → T transversions. Knockdown of pol η
and pol ζ reduced the MF of dG-N2-MC and dG-N2-2,7-DAM, whereas knockdown
of pol κ increased the MF of these adducts. This suggests that
pol κ predominantly carries out error-free TLS, whereas pol
η and pol ζ are involved in error-prone TLS. The largest
reduction in MF by 78 and 80%, respectively, for dG-N2-MC and dG-N2-2,7-DAM constructs
occurred when pol η, pol ζ, and Rev1 were simultaneously
knocked down. This result strongly suggests that, unlike pol κ,
these three TLS polymerases cooperatively perform the error-prone
TLS of these adducts.
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Affiliation(s)
- Arindam Bose
- Department of Chemistry, University of Connecticut , Storrs, Connecticut 06269, United States
| | - Chaitra Surugihalli
- Department of Chemistry, University of Connecticut , Storrs, Connecticut 06269, United States
| | - Paritosh Pande
- Department of Chemistry, University of Connecticut , Storrs, Connecticut 06269, United States
| | - Elise Champeil
- Department of Science, John Jay College of Criminal Justice , New York, New York 10019, United States
| | - Ashis K Basu
- Department of Chemistry, University of Connecticut , Storrs, Connecticut 06269, United States
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