Name: antibody transfection into neurons as a tool to study disease pathogenesis
Uploaded: 2012-09-26T13:00:00
Description: Watch this Scientific Journal Video about Antibody Transfection into Neurons as a Tool to Study Disease Pathogenesis at JoVE.com

Работа выполнена при поддержке Управления научных исследований и разработок, медицинских исследований службы, Департамента по делам ветеранов. Это исследование было профинансировано VA премии отзыв заслуги (в MCL) и Университета Теннесси Научного центра здоровья Несколько Fund Research склероз.

1. Антитела маркировки (рис. 1) <ol><li> Сделайте 0,1 М NaHCO 3 буфера: <ul type="circle"><li> 8,4 г NaHCO 3 </li><li> 29,2 г NaCl </li><li> 1 л H 2 O </li></ul></li><li> Принесите буфера до рН 8,4 с этим решением (10,6 г Na 2 CO 3, 29,2 г NaCl, 1 л H 2 0). </li><li> Добавить 35 мкл Atto550 NHS до 70 мкл анти-hnRNPA1 и 500 мкл буфера NaHCO 3</sub...

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С целью проверки гипотезы о конкретных молекул и их выражения, гены и другие векторы, как правило, трансфицировали в клетки. Уникальной особенностью этой процедуры является возможность легко трансфекции антител в клетки-мишени. Мы провели этот метод в пяти отдельных экспериментов каж?...

<table border="1"><tbody><tr><td> Название реагента </td><td> Компания </td><td> Номер по каталогу </td></tr><tr><td> Флуоресцентного микроскопа AxioObserver A1 </td><td> Zeiss </td><td></td></tr><tr><td> AxioVision версии 4.2 </td><td> Zeiss </td><td></td></tr><tr><td> Anti-rhnRNPA1 </td><td> Abcam </td><td> Ab4791 </td></tr><tr><td> FITC-меченными анти-Ригга </td><td> OZ Biosciences </td><td> AI20100 </td></tr><tr><td> Atto550 NHS эфир </td><td> Сигма </td><td> 92835 </td></tr><tr><td> Ab-DeliverIN </td><td> OZ Biosciences </td><td> AI20100 </td></tr><tr><td> DMEM/F12 +10% FBS +1% антибиотиков </td><td> Gibco </td><td> 11320-033 </td></tr><tr><td> Поли-D-лизин, 8-а Слайды культуры </td><td> BD </td><td> 354632 </td></tr><tr><td> Многоцелевой Rotator </td><td> Научно IndustriES Inc </td><td> Модель 151 </td></tr><tr><td> DAPI Монтаж СМИ </td><td> Millipore </td><td> S7113 </td></tr><tr><td> PBS </td><td> Ambion </td><td> 9626 </td></tr><tr><td> Диализатор </td><td> Thermo Fisher Scientific </td><td> 66380 </td></tr><tr><td> Amicon Ультра-0.5 </td><td> Millipore </td><td> UFC501096 </td></tr><tr><td> Параформальдегид (4% раствор) </td><td> Электрон наук микроскопии </td><td></td></tr><tr><td> Nano-Drop </td><td> Thermo Fisher Scientific </td><td></td></tr></tbody></table>

antibody transfection into neurons as a tool to study disease pathogenesis

Antibodies provide the ability to gain novel insight into various events taking place in living systems. The ability to produce highly specific antibodies to target proteins has allowed for very precise biological questions to be addressed. Importantly, antibodies have been implicated in the pathogenesis of a number of human diseases including systemic lupus erythematosus (SLE), rheumatoid arthritis (RA), paraneoplastic syndromes, multiple sclerosis (MS) and human T-lymphotropic virus type 1 (HTLV-1) associated myelopathy/tropical spastic paraparesis (HAM/TSP) 1-9. How antibodies cause disease is an area of ongoing investigation, and data suggests that interactions between antibodies and various intracellular molecules results in inflammation, altered cellular messaging, and apoptosis 10. It has been shown that patients with MS and HAM/TSP produce autoantibodies to the intracellular RNA binding protein heterogeneous ribonuclear protein A1 (hnRNP A1) 3, 5-7, 9, 11. Recent data indicate that antibodies to both intra-neuronal and surface antigens are pathogenic 3, 5-9, 11. Thus, a procedure that allows for the study of intracellular antibody:protein interactions would lend great insight into disease pathogenesis.
Genes are commonly transfected into primary cells and cell lines in culture, however transfection of antibodies into cells has been hindered by alteration of antibody structure or poor transfection efficiency 12. Other methods of transfection include antibody transfection based on cationic liposomes (consisting of DOTAP/DOPE) and polyethylenimines (PEI); both of which resulted in a ten-fold decrease in antibody transfection compared to controls 12. The method performed in our study is similar to cationic lipid-mediated methods and uses a lipid-based mechanism to form non-covalent complexes with the antibodies through electrostatic and hydrophobic interactions 13. We utilized Ab-DeliverIN reagent, which is a lipid formulation capable of capturing antibodies through non-covalent electrostatic and hydrophobic interactions and delivering them inside cells. Thus chemical and genetic couplings are not necessary for delivery of functional antibodies into living cells. This method has enabled us to perform various antibody tracing and protein localization experiments, as well as the analyses of the molecular consequences of intracellular antibody:protein interactions 9.
In this protocol, we will show how to transfect antibodies into neurons rapidly, reproducibly and with a high degree of transfection efficiency. As an example, we will use anti-hnRNP A1 and anti-IgG antibodies. For easy quantification of transfection efficiency we used anti-hnRNP A1 antibodies labelled with Atto-550-NHS and FITC-labeled IgG. Atto550 NHS is a new label with high molecular absorbtion and quantum yield. Excitation source and fluorescent filters for Atto550 are similar to Cy3 (Ex. 556 Em. 578). In addition, Atto550 has high photostability. FITC-labeled IgG were used as a control to show that this method is versatile and not dye dependent. This approach and the data that is generated will assist in understanding of the role that antibodies to intracellular target antigens might play in the pathogenesis of human diseases.

Watch this Scientific Journal Video about Antibody Transfection into Neurons as a Tool to Study Disease Pathogenesis at JoVE.com

Antibody Transfection into Neurons as a Tool to Study Disease Pathogenesis

Быстрое подход к исследованию взаимодействия и воздействия на молекулярные механизмы, связанные с наличием антител в внутриклеточной среде описывается. Метод включает в себя трансфекцию антител в живой клетки с помощью нековалентных образование комплекса на основе липидного состава. Техника адаптирована к увековечили клеточных линий и первичных клеток.

Антитела Трансфекция в нейроны, как инструмент для изучения патогенеза заболевания

Antibodies provide the ability to gain novel insight into various events taking place in living systems.  The ability to produce highly specific ...

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Neuroscience

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