|
NascaCell Technologies AG is a global leader in the rapid automated production and marketing of custom aptamers as small molecule substitutes for target validation and drug discovery, opening new ways beyond those of antibodies, RNAi and other technologies, and in the development of Microbodies™ as protein therapeutics and tools for diagnostic and processing applications with small molecule characteristics. APTAMERS - FOR TARGET VALIDATION AND DRUG DISCOVERYAptamers are small, functional oligonucleotides with a defined 3D structure and are engineered to bind target proteins with affinities and specificities only matched by antibodies. Unlike antibodies, aptamers even display selectivity for conformational changes of the same protein (see example for Erk2 Kinase on the right). Due to their drug like binding characteristics, aptamers typically show strong inhibition of protein function. At NascaCell aptamers are selected in a rapid, automated procedure, characterized and delivered within eight to twelve weeks. APTAMERS - FOR ALL COMMON DRUG TARGETSAptamers can be selected from DNA, RNA or protected RNA libraries. They can be selected to inhibit or modify the function of enzymes or signal transduction proteins in cellular assays. For applications in vivo or in cell culture to bind to plasma or membrane proteins the protected aptamers are selected. APTAMERS - RAPID ACCESS THROUGH SYNTHESISAptamers are produced by in vitro transcription or chemical synthesis. This allows rapid and reproducible access even to large amounts for in vivo studies or specially labelled aptamers for High Throughput Screening (HTS). APTAMERS - RAPID SERVICE INCLUDING NECESSARY LICENSESThe aptamer selection is offered by NascaCell with a favourable payment structure on a fee for service basis. NascaCell can provide all necessary sublicenses for the use of aptamers in the fields above. MICROBODIES™ - A STABLE PROTEIN FOLDMicrobodies™ are minimalistic proteins derived from naturally occurring knottins or microproteins. NascaCell either uses the Microbody™ scaffold to stabilize peptides with biological activities by grafting their sequence into a displaying loop or for the selection of novel binders. Microbodies™ can be easily produced by expression in E.coli or chemical synthesis to include site specific modifications. MICROBODIES™ - THERAPEUTIC PROTEINSMicrobodies™ are resistant to most proteases and stable over a broad pH range (pH 1-13). The scaffold has been successfully used to for example, design highly specific protease inhibitors or TPO receptor agonists, which have shown efficacy in mice. MICROBODIES™ - DIAGNOSTIC AND OTHER APPLICATIONSA shelf life of several months in solution, or even longer when immobilized on surfaces, combined with their extreme stability makes Microbodies™ an ideal tool in immunological assays, i.e. to display epitopes and mimotopes, and as tool for other processes like affinity purification. MICROBODIES™ - COLLABORATIONS WITH RAPID ACCESS TO TEST MATERIAL When using grafting of biological active peptides into the established Microbody™ scaffolds, delivery of mg quantities for test purposes is possible within 10-15 weeks. Collaboration partners profit from NascaCell's established routines in the field. Microbodies™ is a registered trade mark of NascaCell Technologies AG, SELEX™ is a trade mark of Gilead Sciences. For more information, please contact:
NascaCell Technologies AG
Max-Lebsche-Platz 31 81377 München Germany Tel: +49 89 54 72 72 0 Fax: +49 89 54 72 72 22 Email: customer@nascacell.de URL: www.nascacell.com |
![]() Aptamer (colored) binding to a protein (white) by interacting in a small area with phosphate groups (red / orange) and nucleosides protruding into clefts. |
![]() Once selected on a target, aptamers can be used for target validation in cellular assays or in vivo. Since labelled easily, they are also a valuable tool in high throughput screening. | |
![]() An aptamer selected on activated Erk2 kinase displays high affinity for the activated enzyme - this aptamer shows significantly less affinity for the non-activated Erk2 kinase. | |
![]() Microbodies™ have been modelled into the structure of ß–tryptase (Kiapp of 2nM - 4nM). | |
![]() Microbodies™ are extremely stable. Two different Microbodies™ stored in water at different temperatures for 12 weeks showed no significant degradation relative to frozen samples, as observed by HPLC analysis. |