Your browser doesn't support javascript.
Show: 20 | 50 | 100
Results 1 - 4 de 4
Add more filters

Publication year range
Immunol Lett ; 217: 39-48, 2020 01.
Article in English | MEDLINE | ID: mdl-31669547


The success of genetically engineered T-cells modified with a chimeric antigen receptor as an adoptive cell immunotherapy and the subsequent last regulatory approvals of products based on this therapy are leading to a crescent number of both academic and pharmaceutical industry clinical trials testing new approaches of this "living drugs". The aim of this review is to outline the latest developments and regulatory considerations in this field, with a particular emphasis to differences and similarities between academic and industry approaches and the role they should play to coexist and move forward together. To do that, the main considerations for the manufacturing process are firstly discussed, from the chimeric antigen receptor design to final production steps, passing through ex vivo T-cell handling, gene delivery methods, patient´s final product infusion observations or possible associated side effects of this treatment.

Immunotherapy, Adoptive/methods , Neoplasms/drug therapy , Neoplasms/immunology , Receptors, Antigen, T-Cell/immunology , T-Lymphocytes/immunology , Academies and Institutes , Biopharmaceutics/methods , Costs and Cost Analysis , Gene Editing , Genetic Engineering/methods , Genetic Therapy/methods , Genetic Vectors , Humans , Immunotherapy, Adoptive/adverse effects , Immunotherapy, Adoptive/legislation & jurisprudence , Immunotherapy, Adoptive/trends , Industry/economics , Industry/methods , Manufacturing Industry/economics , Receptors, Antigen, T-Cell/genetics , T-Lymphocytes/cytology , T-Lymphocytes/metabolism
Int J Pharm ; 533(1): 34-48, 2017 Nov 25.
Article in English | MEDLINE | ID: mdl-28943206


Kaolinite Al2Si2O5(OH)4 is an abundant and inexpensive geomaterial regarded as one of the most common clay minerals in the earth's crust and the most widespread phase among the other kaolin polymorphs (halloysite, dickite and nacrite). Structurally, it is a hydrous aluminum phyllosilicate member belonging to the dioctahedral 1:1 kaolin mineral group. The particle size of the pseudohexagonal kaolinite platelets is normally <2µm (if compared to a human red blood cell of a typical diameter 6.2-8.2µm or to a virus particle of about 50nm diameter). The kaolinite platelets, either stacked together with a common booklet-like shape in a highly ordered structure (well crystallized) or disordered structure (poorly crystallized), consist of layers considered as a strong dipole of hydrophobic siloxane surface dominated by negative charges, and the other hydrophilic aluminol surface carries positive charges. Kaolinite has been used in many pharmaceutical applications as excipient or active ingredient, because it exhibits excellent physical, chemical and surface physicochemical properties. In addition to their classical pharmaceutical uses, kaolinite and its derivatives have been recently considered as a promising material in many biomedical innovation areas such as drug, protein and gene delivery based on the high interaction capacities with organic and biochemical molecules, bioadhesion and cellular uptake. Pharmaceutical kaolin grades are considerably demanded for usage as excipient in formulations of solid and semi-solid dosage forms. The most important functionalities of kaolin used as excipient are reported as diluent, binder, disintegrant, pelletizing and granulating, amorphizing, particle film coating, emulsifying and suspending agent. Because of its uninjured bioactivity, kaolinite has been also used as active agent for treatment of some common diseases. It can be topically administered as hemostatic agent, dermatological protector, anti-inflammatory agent and in pelotherapy, or orally as gastrointestinal protector, and antibacterial, antiviral, detoxification or antidiarrheal agent. With these premises, the future of kaolinite in health-care uses is strongly interesting, especially in the development of pharmaceutical and cosmetic industries. In biomedicinal investigations, it can be considered as a promising natural geomaterial for designing new derivatives that can contribute in the trials of discovering new therapeutic systems and treatment pathways of global challenge diseases such as cancer, viruses, antibiotic resistant bacteria, alzheimer, chronic skeletomuscular and geriatric diseases.

Kaolin , Animals , Biopharmaceutics , Excipients/chemistry , Humans , Industry , Kaolin/chemistry , Mud Therapy , Pharmacopoeias as Topic
Immunotherapy ; 4(2): 145-7, 2012 Feb.
Article in English | MEDLINE | ID: mdl-22339457


Advances in genetics, as well as molecular and cellular biology, are continually fueling innovations in the biopharmaceutical sector. Increasingly specialized therapies are emerging that offer exciting prospects for the treatment of human diseases. Defining a suitable manufacturing route for each therapeutic product, however, can often present a significant challenge. There is a growing trend in the biopharmaceutical sector to use microscale models (that mimic key manufacturing steps) during the early stages of process development, as such technologies enable key process information to be accrued rapidly and at relatively low costs. The 2nd Annual Miniaturisation conference, organized by Euroscicon, brought together 34 delegates from industry and academia for a lively discussion of the current state-of-the-art in microscale bioprocess technologies.

Biopharmaceutics/trends , Biotechnology/trends , Microfluidics/trends , Microtechnology , Animals , Cell Culture Techniques , High-Throughput Screening Assays , Humans , Industry , London , Microchemistry
Biotechnol Appl Biochem ; 48(Pt 2): 65-78, 2007 Oct.
Article in English | MEDLINE | ID: mdl-17868020


A three-layered simulation methodology is described that rapidly evaluates biomanufacturing process options. In each layer, inferior options are screened out, while more promising candidates are evaluated further in the subsequent, more refined layer, which uses more rigorous models that require more data from time-consuming experimentation. Screening ensures laboratory studies are focused only on options showing the greatest potential. To simplify the screening, outputs of production level, cost and time are combined into a single value using multi-attribute-decision-making techniques. The methodology was illustrated by evaluating alternatives to an FDA (U.S. Food and Drug Administration)-approved process manufacturing rattlesnake antivenom. Currently, antivenom antibodies are recovered from ovine serum by precipitation/centrifugation and proteolyzed before chromatographic purification. Alternatives included increasing the feed volume, replacing centrifugation with microfiltration and replacing precipitation/centrifugation with a Protein G column. The best alternative used a higher feed volume and a Protein G step. By rapidly evaluating the attractiveness of options, the methodology facilitates efficient and cost-effective process development.

Biopharmaceutics/methods , Industry/methods , Models, Biological , Models, Chemical , Models, Economic , Software , Computer Simulation , Pilot Projects