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  1. Article ; Online: Protein-Specific Signal Peptides for Mammalian Vector Engineering.

    O'Neill, Pamela / Mistry, Rajesh K / Brown, Adam J / James, David C

    ACS synthetic biology

    2023  Volume 12, Issue 8, Page(s) 2339–2352

    Abstract: Expression of recombinant proteins in mammalian cell factories relies on synthetic assemblies of genetic parts to optimally control flux through the product biosynthetic pathway. In comparison to other genetic part-types, there is a relative paucity of ... ...

    Abstract Expression of recombinant proteins in mammalian cell factories relies on synthetic assemblies of genetic parts to optimally control flux through the product biosynthetic pathway. In comparison to other genetic part-types, there is a relative paucity of characterized signal peptide components, particularly for mammalian cell contexts. In this study, we describe a toolkit of signal peptide elements, created using bioinformatics-led and synthetic design approaches, that can be utilized to enhance production of biopharmaceutical proteins in Chinese hamster ovary cell factories. We demonstrate, for the first time in a mammalian cell context, that machine learning can be used to predict how discrete signal peptide elements will perform when utilized to drive endoplasmic reticulum (ER) translocation of specific single chain protein products. For more complex molecular formats, such as multichain monoclonal antibodies, we describe how a combination of in silico and targeted design rule-based in vitro testing can be employed to rapidly identify product-specific signal peptide solutions from minimal screening spaces. The utility of this technology is validated by deriving vector designs that increase product titers ≥1.8×, compared to standard industry systems, for a range of products, including a difficult-to-express monoclonal antibody. The availability of a vastly expanded toolbox of characterized signal peptide parts, combined with streamlined in silico/in vitro testing processes, will permit efficient expression vector re-design to maximize titers of both simple and complex protein products.
    MeSH term(s) Cricetinae ; Animals ; Cricetulus ; CHO Cells ; Protein Sorting Signals/genetics ; Recombinant Proteins/metabolism ; Antibodies, Monoclonal/metabolism
    Chemical Substances Protein Sorting Signals ; Recombinant Proteins ; Antibodies, Monoclonal
    Language English
    Publishing date 2023-07-24
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 2161-5063
    ISSN (online) 2161-5063
    DOI 10.1021/acssynbio.3c00157
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Redox regulation of gasotransmission in the vascular system: A focus on angiogenesis.

    Mistry, Rajesh K / Brewer, Alison C

    Free radical biology & medicine

    2017  Volume 108, Page(s) 500–516

    Abstract: Reactive oxygen species have emerged as key participants in a broad range of physiological and pathophysiological processes, not least within the vascular system. Diverse cellular functions which have been attributed to some of these pro-oxidants within ... ...

    Abstract Reactive oxygen species have emerged as key participants in a broad range of physiological and pathophysiological processes, not least within the vascular system. Diverse cellular functions which have been attributed to some of these pro-oxidants within the vasculature include the regulation of blood pressure, neovascularisation and vascular inflammation. We here highlight the emerging roles of the enzymatically-generated reaction oxygen species, O
    MeSH term(s) Animals ; Cardiovascular System/metabolism ; Gasotransmitters/metabolism ; Gene Expression Regulation ; Humans ; Neovascularization, Physiologic ; Oxidation-Reduction ; Reactive Oxygen Species/metabolism ; Signal Transduction ; Vascular Endothelial Growth Factor A/metabolism
    Chemical Substances Gasotransmitters ; Reactive Oxygen Species ; Vascular Endothelial Growth Factor A
    Language English
    Publishing date 2017-04-19
    Publishing country United States
    Document type Journal Article ; Review ; Research Support, Non-U.S. Gov't
    ZDB-ID 807032-5
    ISSN 1873-4596 ; 0891-5849
    ISSN (online) 1873-4596
    ISSN 0891-5849
    DOI 10.1016/j.freeradbiomed.2017.04.025
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Profile of Dengue Fever in Hospitalized Children in Saurashtra, Gujarat, 2013-2017.

    Mistry, Madhulika / Chudasama, Rajesh K / Goswami, Yogesh

    Indian pediatrics

    2019  Volume 56, Issue 2, Page(s) 123–125

    Abstract: Objective: To study the five year trend of epidemiological and demographic characteristics of dengue infections from year 2013 to 2017 among children upto 15 years.: Methods: This study presents data from review of microbiology department records of ... ...

    Abstract Objective: To study the five year trend of epidemiological and demographic characteristics of dengue infections from year 2013 to 2017 among children upto 15 years.
    Methods: This study presents data from review of microbiology department records of samples for dengue testing with information supplied by clinicians on the investigation request form. Patients were tested for NS1 Ag, IgM Ab or both.
    Results: Out of 4216 samples, 1072 (25.4%) were positive for dengue. Positivity ranged from 44.2% in year 2013, 25.8% in 2015 to 16.2% in year 2017. Most cases reported were among male (57.9%), from urban areas (77.9%) and Rajkot district (75.7%). Reporting of dengue cases increased from July to November with peak during October every year.
    Conclusions: Serum samples for dengue serology were more commonly positive in July-September months during the study period, and in male children, and those from urban areas.
    MeSH term(s) Adolescent ; Child ; Child, Preschool ; Dengue/epidemiology ; Dengue/transmission ; Female ; Hospitalization ; Humans ; India/epidemiology ; Infant ; Infant, Newborn ; Male ; Seasons
    Language English
    Publishing date 2019-03-01
    Publishing country India
    Document type Journal Article
    ZDB-ID 402594-5
    ISSN 0974-7559 ; 0019-6061
    ISSN (online) 0974-7559
    ISSN 0019-6061
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  4. Article ; Online: Redox-Dependent Regulation of Sulfur Metabolism in Biomolecules: Implications for Cardiovascular Health.

    Mistry, Rajesh K / Brewer, Alison C

    Antioxidants & redox signaling

    2017  Volume 30, Issue 7, Page(s) 972–991

    Abstract: Significance: Sulfur-containing amino acids are integral to the molecular mechanisms that underlie many aspects of cellular function and homeostasis, facilitated by reversible changes in the oxidation states of sulfur atoms. Sulfur-containing amino ... ...

    Abstract Significance: Sulfur-containing amino acids are integral to the molecular mechanisms that underlie many aspects of cellular function and homeostasis, facilitated by reversible changes in the oxidation states of sulfur atoms. Sulfur-containing amino acids are metabolically linked by interacting pathways that impact the one-carbon metabolic cycle and generation of methyl groups, the folate cycle, and maintenance of the major cellular redox buffer; glutathione. Dysregulation of these pathways is associated with diverse pathologies, notably of the cardiovascular (CV) system, which are typically characterized by inappropriate plasma levels of sulfur-containing amino acids. Recent Advances: Perhaps not surprisingly, the cellular redox state has emerged as a major regulator of many enzymatic processes within these metabolic cycles. The metabolism of cysteine can also result in the production of hydrogen sulfide (H
    Critical issues: In most cases, the endogenous physiological sources of ROS that might mediate the interlinked metabolic pathways of sulfur-containing biomolecules remain unknown. However, the family of NADPH oxidases, and Nox4 in particular, is emerging as a likely candidate.
    Future directions: This review focuses on the current knowledge of key aspects of sulfur metabolism, which are regulated by redox-based chemical reactions, and the likely intracellular oxidant sources that might mediate this regulation. This knowledge will be important to guide future targeted therapeutic interventions in diverse CV disorders.
    MeSH term(s) Amino Acids/metabolism ; Animals ; Cardiovascular Diseases/metabolism ; Humans ; Hydrogen Sulfide/metabolism ; Metabolic Networks and Pathways ; Oxidation-Reduction ; Sulfur/metabolism
    Chemical Substances Amino Acids ; Sulfur (70FD1KFU70) ; Hydrogen Sulfide (YY9FVM7NSN)
    Language English
    Publishing date 2017-07-28
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 1483836-9
    ISSN 1557-7716 ; 1523-0864
    ISSN (online) 1557-7716
    ISSN 1523-0864
    DOI 10.1089/ars.2017.7224
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Intermuscular Subcutaneous Implantable Cardioverter-Defibrillator Implantation Without Defibrillation Testing.

    Mistry, Amar / Pooranachandran, Vivetha / Dhutia, Harshil / Chelliah, Rajesh / Pathmanathan, Ravi K

    JACC. Clinical electrophysiology

    2020  Volume 7, Issue 1, Page(s) 124–126

    MeSH term(s) Defibrillators, Implantable ; Electric Countershock ; Humans ; Ventricular Fibrillation
    Language English
    Publishing date 2020-10-28
    Publishing country United States
    Document type Letter
    ZDB-ID 2846739-5
    ISSN 2405-5018 ; 2405-500X ; 2405-500X
    ISSN (online) 2405-5018 ; 2405-500X
    ISSN 2405-500X
    DOI 10.1016/j.jacep.2020.09.003
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  6. Article ; Online: A novel hydrogen peroxide evolved CHO host can improve the expression of difficult to express bispecific antibodies.

    Mistry, Rajesh K / Kelsall, Emma / Sou, Si Nga / Barker, Harriet / Jenns, Mike / Willis, Katie / Zurlo, Fabio / Hatton, Diane / Gibson, Suzanne J

    Biotechnology and bioengineering

    2021  Volume 118, Issue 6, Page(s) 2326–2337

    Abstract: The manufacture of bispecific antibodies by Chinese hamster ovary (CHO) cells is often hindered by lower product yields compared to monoclonal antibodies. Recently, reactive oxygen species have been shown to negatively impact antibody production. By ... ...

    Abstract The manufacture of bispecific antibodies by Chinese hamster ovary (CHO) cells is often hindered by lower product yields compared to monoclonal antibodies. Recently, reactive oxygen species have been shown to negatively impact antibody production. By contrast, strategies to boost cellular antioxidant capacity appear to be beneficial for recombinant protein expression. With this in mind, we generated a novel hydrogen peroxide evolved host using directed host cell evolution. Here we demonstrate that this host has heritable resistance to hydrogen peroxide over many generations, displays enhanced antioxidant capacity through the upregulation of several, diverse antioxidant defense genes such as those involved in glutathione synthesis and turnover, and has improved glutathione content. Additionally, we show that this host has significantly improved transfection recovery times, improved growth and viability properties in a fed-batch production process, and elevated expression of two industrially relevant difficult to express bispecific antibodies compared to unevolved CHO control host cells. These findings demonstrate that host cell evolution represents a powerful methodology for improving specific host cell characteristics that can positively impact the expression of difficult to express biotherapeutics.
    MeSH term(s) Animals ; Antibodies, Bispecific/biosynthesis ; CHO Cells/classification ; Cricetulus ; Hydrogen Peroxide ; Oxidative Stress ; Recombinant Proteins/biosynthesis ; Transfection
    Chemical Substances Antibodies, Bispecific ; Recombinant Proteins ; Hydrogen Peroxide (BBX060AN9V)
    Language English
    Publishing date 2021-03-25
    Publishing country United States
    Document type Journal Article
    ZDB-ID 280318-5
    ISSN 1097-0290 ; 0006-3592
    ISSN (online) 1097-0290
    ISSN 0006-3592
    DOI 10.1002/bit.27744
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  7. Article ; Online: Assessing the effectiveness of gabapentin in paclitaxel-induced arthralgia, myalgia, and neuropathic pain: An observational, cohort study.

    Patel, Prashantkumar / Rajput, Hemraj Singh / Chavda, Khushboo / Mistry, Smit / Bhagat, Sandesh / Hadia, Rajesh / Saiyed, Moinuddin / Khadela, Avinash

    Journal of oncology pharmacy practice : official publication of the International Society of Oncology Pharmacy Practitioners

    2024  , Page(s) 10781552231225148

    Abstract: Background and objectives: Arthralgia, myalgia, and neuropathic pain are the most common side effects observed due to paclitaxel chemotherapy. The aim of this study was to investigate the prophylactic role, maintenance, remission, and re-occurrence of ... ...

    Abstract Background and objectives: Arthralgia, myalgia, and neuropathic pain are the most common side effects observed due to paclitaxel chemotherapy. The aim of this study was to investigate the prophylactic role, maintenance, remission, and re-occurrence of arthralgia, myalgia, and neuropathic pain post-gabapentin therapy.
    Methodology: This study was conducted in the Department of Oncology, Dhiraj Hospital, Vadodara with a sample of 51 patients. Newly detected cancer patients who observed arthralgia, myalgia, and neuropathic pain due to paclitaxel were taken and a baseline pain assessment was done using the Common Terminology Criteria for Adverse Events (CTCAE) and painDETECT questionnaire. Gabapentin was given in the first cycle after symptoms appeared and prophylactic treatment was given in the subsequent three cycles and evaluation of pain was done post-gabapentin therapy to assess the symptomatic as well as prophylactic effect.
    Results: At baseline, neuropathic pain score was 22.7 ± 3.6 which reduced to 0.01 ± 0.14 on subsequent follow-ups. Grade 2 arthralgia, myalgia, and neuropathic pain were more observed at baseline which reduces to Grade 0 in the third cycle. The difference in baseline and post-gabapentin therapy was statistically analyzed by conducting
    Conclusion: This study shows that gabapentin reduces neuropathic pain. Prophylactic usage of gabapentin was highly effective at bringing about quick pain relief when compared to symptomatic treatment. In further follow-ups, it was noted that gabapentin maintained the impact throughout the cycles.
    Language English
    Publishing date 2024-01-05
    Publishing country England
    Document type Journal Article
    ZDB-ID 1330764-2
    ISSN 1477-092X ; 1078-1552
    ISSN (online) 1477-092X
    ISSN 1078-1552
    DOI 10.1177/10781552231225148
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  8. Article ; Online: Stereotactic body radiotherapy for lung tumors: Dosimetric analysis and clinical outcome.

    Talapatra, Kaustav / Majumder, Dipanjan / Chadha, Pranav / Shaju, P / Goyle, Sandeep / Smruti, B K / Mistry, Rajesh

    Indian journal of cancer

    2019  Volume 55, Issue 2, Page(s) 170–175

    Abstract: Introduction: Stereotactic body radiotherapy (SBRT) has emerged as an important modality in malignant lung tumor treatment both in early localized primary and oligometastatic setting. This study aims to present the results of lung SBRT both in terms of ... ...

    Abstract Introduction: Stereotactic body radiotherapy (SBRT) has emerged as an important modality in malignant lung tumor treatment both in early localized primary and oligometastatic setting. This study aims to present the results of lung SBRT both in terms of dosimetry and clinical outcome.
    Materials and methods: Twenty-seven patients were assessed from 2012 to 2016. Both the primary and oligometastatic lung tumors were evaluated. Respiratory motion management was done employing ANZAI (Siemens, Germany) based four-dimensional computed tomography (CT). Commonly used fractionations were 60 Gy/5 fractions for peripheral tumors and 48 Gy/6 fractions for central tumors. Radiation Therapy Oncology Group toxicity criteria were used for toxicity and whole-body positron emission tomography-CT scan was done at follow-up for response evaluation.
    Results: Twenty-seven patients were evaluated, 18 (66.7%) patients had a primary, and 9 (33.3%) patients had metastatic lung tumors. The male-to-female ratio for the entire cohort was 2:1. The median age at diagnosis was 65.8 years. Mean planning target volume (PTV) D2cc was 54.9 ± 9.04 Gy and mean internal target volume diameter was 3.0 ± 1.07 cm. Mean V20 Gy, V10 Gy, and V5 Gy of (lungs total-PTV) and (Lung ipsilateral - PTV) were 5.4 ± 4% and 10.9 ± 7.9%, 11.7 ± 5.8% and 24.2 ± 14.0%, and 22.05 ± 12.4% and 33.2 ± 15.3%, respectively. In total 21 (84%) patients and 4 patients (16%) showed a complete and partial response, respectively. One (3%) patient developed Gr 3 radiation pneumonitis. One year local control was in 18 (81%) patients whereas 4 (14%) patients progressed and three patients did not report. A higher prescribed dose significantly correlated with 1 year tumor control (P = 0.036).
    Conclusion: This study infers the feasibility and a favorable outcome for lung cancer amenable to SBRT in addition to being one of the largest clinical experiences for lung stereotactic treatment in our country.
    MeSH term(s) Aged ; Female ; Humans ; Lung Neoplasms/pathology ; Lung Neoplasms/radiotherapy ; Male ; Radiometry/methods ; Radiosurgery/methods ; Treatment Outcome
    Language English
    Publishing date 2019-02-18
    Publishing country India
    Document type Journal Article
    ZDB-ID 410194-7
    ISSN 1998-4774 ; 0019-509X
    ISSN (online) 1998-4774
    ISSN 0019-509X
    DOI 10.4103/ijc.IJC_555_17
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  9. Article: Epidemiological characteristics of dengue disease in Saurashtra region, India, during year 2015.

    Mistry, Madhulika / Chudasama, Rajesh K / Goswami, Yogesh / Dalwadi, Chintan / Mitra, Aarohi / Mehta, Garima

    Journal of family medicine and primary care

    2017  Volume 6, Issue 2, Page(s) 249–253

    Abstract: Background: Dengue is an important vector-borne disease with a spectrum of classical fever to hemorrhagic fever to dengue shock syndrome. The present study was conducted with objective to study epidemiological and demographic characteristics of dengue ... ...

    Abstract Background: Dengue is an important vector-borne disease with a spectrum of classical fever to hemorrhagic fever to dengue shock syndrome. The present study was conducted with objective to study epidemiological and demographic characteristics of dengue infections during the year 2015 in Saurashtra region, Gujarat state, India.
    Materials and methods: The study was conducted at Tertiary Care Hospital, Rajkot, during the year 2015. A total of 3312 blood samples were collected and tested for dengue NS1 antigen and IgM antibody by capture ELISA testing from various districts of Saurashtra region. A pretested structured data sheet was used as a tool for data collection, and data analysis was done.
    Results: Out of 3312 tested samples, 33.4% samples were found positive for dengue. Suspected cases were reported from all age groups, including majority from 15 to 24 years (31.1%) and 25 to 44 years (30.0%) and also 8.4% from 0 to 4 years. More than two-third (68.7%) of males were dengue positive than female cases. Significant numbers of cases (
    Conclusion: The present study reported that dengue mainly affected males and urban population. Perennial occurrence with seasonal increase during monsoon and postmonsoon months was reported. Effective implementation of vector control measures through efforts toward vector breeding source reduction and with the use of personal prophylactic measures against mosquito bites will help in reducing the dengue prevalence in the community.
    Language English
    Publishing date 2017-12-22
    Publishing country India
    Document type Journal Article
    ZDB-ID 2735275-4
    ISSN 2278-7135 ; 2249-4863
    ISSN (online) 2278-7135
    ISSN 2249-4863
    DOI 10.4103/2249-4863.220003
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  10. Article: Epidemiological and demographic characteristics of dengue disease at a tertiary care centre in Saurashtra region during the year 2013.

    Mistry, Madhulika / Goswami, Yogesh / Chudasama, Rajesh K / Thakkar, Dhara

    Journal of vector borne diseases

    2015  Volume 52, Issue 4, Page(s) 299–303

    Abstract: Background & objectives: Dengue is one of the most important vector-borne viral infection which may lead to haemorrhage or even shock. The present study was conducted with an objective to study the epidemiological and demographic characteristics of ... ...

    Abstract Background & objectives: Dengue is one of the most important vector-borne viral infection which may lead to haemorrhage or even shock. The present study was conducted with an objective to study the epidemiological and demographic characteristics of dengue disease during the year 2013 in Saurashtra region of Gujarat state, India.
    Methods: A longitudinal study was conducted at sentinel surveillance centre for dengue disease at microbiology department of tertiary care hospital in Rajkot, Gujarat from 1 January 2013 to 31 December 2013. A total of 4366 blood samples were collected during study period and serologically tested for dengue NS1 antigen and IgM antibody by capture ELISA testing from various districts of Saurashtra region. Patients with acute onset of illness, high grade fever, severe headache, backache, musculoskeletal pain or retro-bulbar pain with or without rashes were considered as clinically suspected case of dengue virus infection. Patient who presented with fever and found positive for Dengue NS1 Ag and/or IgM Ab was considered as a case. A pre-tested structured proforma was used as a tool for data collection. The data was entered into EpiInfo software and analyzed by using appropriate statistical test (chi-square test).
    Results: Out of 4366 tested samples, 41.3% samples were found positive for dengue. Majority of samples were tested in age group 16-25 yr (33.9%) and 26-45 yr (31.1%). The ratio of male cases (60.8%) was higher than female cases. Two-third (68.7%) suspected cases were residing in urban areas of Saurashtra region. More than half of the cases (57%) were diagnosed within five days of fever by NS1 antigen test. The reporting of number of cases increased from July 2013, which reached to peak during September 2013 followed by decrease till December 2013.
    Interpretation & conclusion: Dengue predominately affected males and urban population. A seasonal occurrence was reported mainly during monsoon season. A long term serosurveillance study may help to provide more information about the intensity, seasonal incidence and seasonal effect.
    MeSH term(s) Adolescent ; Adult ; Aged ; Antibodies, Viral/blood ; Child ; Child, Preschool ; Dengue/blood ; Dengue/epidemiology ; Dengue Virus/immunology ; Dengue Virus/isolation & purification ; Female ; Humans ; India/epidemiology ; Infant ; Longitudinal Studies ; Male ; Middle Aged ; Tertiary Care Centers ; Young Adult
    Chemical Substances Antibodies, Viral
    Language English
    Publishing date 2015-12-29
    Publishing country India
    Document type Journal Article
    ZDB-ID 2161218-3
    ISSN 0972-9062
    ISSN 0972-9062
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