Nov 2021 Newsletter


RJH Biosciences have created a range of effective transfection reagents for nucleic acids tailored for attachment-independent, suspension-growing cells. The RJH reagents possess an optimal balance of lipophilic components critical for cell entry and cationic domains needed for strong multivalent interactions with nucleic acids. Our reagents are capable of delivering a range of nucleic acids, from small RNAs to plasmid DNAs as large as 10 kbp to established cell lines as well as primary cells.

  • Leu-Fect A & Leu-Fect B reagents are designed to deliver siRNA and microRNA to lymphocytic cells for modulating signalling events. Delivery of a typical microRNA can be seen here.

Reducing Colonies of Drug-Resistant K562 Cells with a specific siRNA and miRNA

  • mRNA-Fect reagent is designed to deliver highly sensitive mRNA with higher efficiency than lipofection. A comparison data with primary cells can be seen here.

Transfecting Peripheral Blood Cells with GFP using mRNA-Fect and ALL-Fect

  • ALL-Fect reagent is designed to deliver large nucleic acids such as plasmid DNA, mRNA and combination of nucleic acids to peripheral blood cells that have a wide range of application in clinical settings. Typical performance data can be seen here.

Transfecting K562 Cells with pDNA and siRNA using ALL-Fect


The efficiency of transfection reagents depends on the cell type to be modified, the nature of nucleic acid to be delivered, and cell culture conditions. Transfection parameters should be optimized for each cell type to ensure maximal gene expression or silencing while minimizing cellular toxicity. We have compiled a list of factors that may affect transfection efficacy, which can be accessed here.


Get personalized advice by an RJH representative on best transfection methods for specific applications. Contact us at We look forward to working with you soon.

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