scholarly journals Genetically modified animals for use in biopharmacology: from research to production

2021 ◽  
Vol 7 (4) ◽  
pp. 11-27
Author(s):  
Alexey V. Deykin ◽  
Olesya V. Shcheblykina ◽  
Elena E. Povetka ◽  
Polina A. Golubinskaya ◽  
Vladimir M. Pokrovsky ◽  
...  

Introduction: In this review, the analysis of technologies for obtaining biologically active proteins from various sources is carried out, and the comparative analysis of technologies for creating producers of biologically active proteins is presented. Special attention is paid to genetically modified animals as bioreactors for the pharmaceutical industry of a new type. The necessity of improving the technology of development transgenic rabbit producers and creating a platform solution for the production of biological products is substantiated. The advantages of using TrB for the production of recombinant proteins: The main advantages of using TrB are the low cost of obtaining valuable complex therapeutic human proteins in readily accessible fluids, their greater safety relative to proteins isolated directly from human blood, and the greater safety of the activity of the native protein. The advantages of the mammary gland as a system for the expression of recombinant proteins: The mammary gland is the organ of choice for the expression of valuable recombinant proteins because milk is easy to collect in large volumes. Methods for obtaining transgenic animals: The modern understanding of the regulation of gene expression and the discovery of new tools for gene editing can increase the efficiency of creating bioreactors for animals and help to obtain high concentrations of the target protein. The advantages of using rabbits as bioreactors producing recombinant proteins in milk: The rabbit is a relatively small animal with a short duration of gestation, puberty and optimal size, capable of producing up to 5 liters of milk per year per female, receiving up to 300 grams of the target protein.

Author(s):  
Maksim Gurin ◽  
◽  
Aleksey Venediktov ◽  
Yuliya Glumskova ◽  
Kristina Korneeva ◽  
...  

Damage to the tendon-ligamentous apparatus places serious limitations on a personʼs physical activity. Injuries are especially common in physically healthy people leading an active lifestyle, such as athletes. To treat such injuries in orthopaedics and traumatology, autoplastic operations are performed or prostheses made of synthetic or biological materials are installed. The known treatment methods, in spite of their effectiveness, have a number of serious drawbacks, which often limit their use. Therefore, the search for new approaches and materials for plastic ligaments is an urgent task. Today, biotissue prostheses are accumulating advantages over their synthetic counterparts. The most promising raw material for biological ligament prostheses, due to its availability in the required quantity and optimal size, is the flexor and extensor calf tendons. This paper aimed to develop a method for treating xenogenic tendon to manufacture ligament prostheses and assessing its biocompatibility in a heterotopic implantation model. To manufacture a ligament prosthesis, the raw material was subjected to mechanical cleaning and chemical-physical treatment, as well as treatment with supercritical carbon dioxide fluid with the addition of the nonionic surfactant Tween 80, which together contributed to effective decellularization and removal of other biologically active components, while maintaining the physical and mechanical parameters and natural fiberarchitectonics of native raw materials. The biocompatible properties of ligament prosthesis specimens made from the flexor and extensor calf tendons using this method were evaluated in a model of heterotopic implantation into the subcutaneous adipose tissue of rats. The results obtained confirm the promising use of this material, treated according to the proposed method, in clinical practice.


2014 ◽  
Vol 48 (4) ◽  
pp. 508-519 ◽  
Author(s):  
A. G. Soboleva ◽  
A. V. Mesentsev ◽  
S. A. Bruskin

Author(s):  
Amanda N. Smolinsky ◽  
Carisa L. Bergner ◽  
Peter C. Hart ◽  
Rupert J. Egan ◽  
Brett D. Dufour ◽  
...  

Author(s):  
Husseini K. Manji ◽  
Jorge Quiroz ◽  
R. Andrew Chambers ◽  
Anthony Absalom ◽  
David Menon ◽  
...  

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