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Methods and Protocols, Volume 3, Issue 4

December 2020 - 21 articles

Cover Story: E. coli strains and T7-promoter-based plasmids have been widely used for the expression of recombinant proteins. However, the limited amount of soluble protein fused with core-streptavidin made it challenging for the immobilization of protein on biotinylated materials. In this study, a T7-promoter-based pET-30a(+) plasmid encoded with a chimeric thymidine phosphorylase (TP)-coreSA gene was constructed as a model system for the expression of TP-coreSA fusion protein. Various bacterial strains with the T7 expression system were used to analyze the expression of soluble fusion protein, with the goal of minimizing time- and cost-consuming steps of protein purification. Our results indicate that the pET-30a(+)-TP-coreSA/Lemo21(DE3) system could provide efficient expression of soluble TP-coreSA fusion protein for purification. The eluted fusion protein tethered on biotinylated A549 cancer cells revealed its functionality by effectively killing cells after loading with prodrug 5′-DFUR.
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Articles (21)

  • Protocol
  • Open Access
6 Citations
4,020 Views
14 Pages

Digital Approach for the Rehabilitation of the Edentulous Maxilla with Pterygoid and Standard Implants: The Static and Dynamic Computer-Aided Protocols

  • Alessio Franchina,
  • Luigi Vito Stefanelli,
  • Simone Gorini,
  • Simone Fedi,
  • Giuseppe Lizio and
  • Gerardo Pellegrino

21 December 2020

A full-arch rehabilitation of the edentulous upper jaw without grafting procedures exploits the residual alveolar or the basal bone, with the necessity of long implants placed with a particular orientation. The precision in planning and placing the f...

  • Study Protocol
  • Open Access
11 Citations
3,537 Views
12 Pages

A Personalized Patient-Centered Intervention to Empower through Physical Activity the Patient in the Dialysis Center: Study Protocol for a Pragmatic Nonrandomized Clinical Trial

  • Fabio Manfredini,
  • Nicola Lamberti,
  • Yuri Battaglia,
  • Sofia Straudi,
  • Martino Belvederi Murri,
  • Maria Donadi,
  • Giovanni Piva,
  • Fabio Fabbian,
  • Pablo Jesús López-Soto and
  • Luigi Grassi
  • + 3 authors

6 December 2020

Sedentariness of patients affected by end-stage kidney disease (ESKD) expose them to high risk of unfavorable clinical outcomes. Exercise training is effective in improving physical function, quality of life (QoL) and long-term outcomes. However, the...

  • Protocol
  • Open Access
6 Citations
6,081 Views
15 Pages

1 December 2020

The limited amount of fusion protein transported into cytosol milieu has made it challenging to obtain a sufficient amount for further applications. To avoid the laborious and expensive task, T7 promoter-driving pET-30a(+) coding for chimeric gene of...

  • Article
  • Open Access
4 Citations
3,183 Views
13 Pages

Quantitative, High-Throughput Assays for Proteolytic Degradation of Amylin

  • Caitlin N. Suire,
  • Monica K. Brizuela and
  • Malcolm A. Leissring

24 November 2020

Amylin is a pancreatic peptide hormone that regulates glucose homeostasis but also aggregates to form islet amyloid in type-2 diabetes. Given its role in both health and disease, there is renewed interest in proteolytic degradation of amylin by insul...

  • Protocol
  • Open Access
3 Citations
2,997 Views
9 Pages

In Situ DNA/Protein Interaction Assay to Visualize Transcriptional Factor Activation

  • Michela Corsini,
  • Emanuela Moroni,
  • Cosetta Ravelli,
  • Elisabetta Grillo,
  • Marco Presta and
  • Stefania Mitola

21 November 2020

The chick embryo chorioallantoic membrane (CAM) represents a powerful in vivo model to study several physiological and pathological processes including inflammation and tumor progression. Nevertheless, the possibility of deepening the molecular proce...

  • Feature Paper
  • Review
  • Open Access
11 Citations
6,808 Views
28 Pages

18 November 2020

While clustered regularly interspaced short palindromic repeats (CRISPR)-based genome editing techniques have been widely adapted for use in immortalised immune cells, efficient manipulation of primary T cells has proved to be more challenging. Nonet...

  • Technical Note
  • Open Access
3 Citations
2,911 Views
9 Pages

Building Accurate Intracellular Polarity Maps through Multiparametric Microscopy

  • M. Carmen Gonzalez-Garcia,
  • Pilar Herrero-Foncubierta,
  • Emilio Garcia-Fernandez and
  • Angel Orte

11 November 2020

The precise knowledge of intracellular polarity, a physiological parameter that involves complex and intertwined intracellular mechanisms, may be relevant in the study of important diseases like cancer or Alzheimer’s. In this technical note, we...

  • Technical Note
  • Open Access
5 Citations
3,123 Views
9 Pages

Prediction of Lung Function in Adolescence Using Epigenetic Aging: A Machine Learning Approach

  • Md Adnan Arefeen,
  • Sumaiya Tabassum Nimi,
  • M. Sohel Rahman,
  • S. Hasan Arshad,
  • John W. Holloway and
  • Faisal I. Rezwan

9 November 2020

Epigenetic aging has been found to be associated with a number of phenotypes and diseases. A few studies have investigated its effect on lung function in relatively older people. However, this effect has not been explored in the younger population. T...

  • Protocol
  • Open Access
13 Citations
4,652 Views
10 Pages

Dynamic Navigation for Zygomatic Implants: A Case Report about a Protocol with Intraoral Anchored Reference Tool and an Up-To-Date Review of the Available Protocols

  • Gerardo Pellegrino,
  • Giuseppe Lizio,
  • Francesco Basile,
  • Luigi Vito Stefanelli,
  • Claudio Marchetti and
  • Pietro Felice

5 November 2020

Dynamic Navigation is a computer-aided technology that allows the surgeon to track the grip instruments while preparing the implant site in real time based on radiological anatomy and accurate pre-operative planning. The support of this technology to...

  • Article
  • Open Access
9 Citations
4,783 Views
12 Pages

Sustainable Management of Organic Wastes in Sharjah, UAE through Co-Composting

  • Md Maruf Mortula,
  • Aqeel Ahmed,
  • Kazi Parvez Fattah,
  • Ghina Zannerni,
  • Syed A. Shah and
  • Ahmed M. Sharaby

5 November 2020

Daily human activities and vast green areas produce substantial amounts of organic wastes that end up in landfills with minimal treatment. In addition to the problems associated with landfills, disposal through this method is unsustainable in the lon...

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Methods Protoc. - ISSN 2409-9279