第一篇关于用阳离子脂质将 DNA 转染到细胞中的出版物由 Philip Felgner 发表。目前,阳离子脂质已成为脂质纳米颗粒(LNP)药物输送载体、mRNA疫苗封装中少数主要分子之一。阳离子脂质可中和负电荷并促进脂质纳米颗粒 (LNP) 的封装和细胞摄取。通常,脂质的不饱和、短(<30 个单体)烃链与最高的转导效率相关。在水环境中,这些脂质形成具有带正电表面的胶束,与 DNA 复合。这些脂质复合物的作用是中和细胞膜和 DNA 之间的电荷排斥并促进内吞作用,类似于阳离子聚合物的机制。
Mono-sized 30 µm rigid beads gives low back pressure and high flow rates allowing for high productivity
Strong cation exchanger designed for high resolution polishing purification of proteins, peptides and oligonucleotides
High chemical stability allowing for wide range of working conditions with good resistance to cleaning conditions at high pH
SOURCE 30S is a synthetic high performance, preparative, chromatography resin, based on a 30 µm monosized, rigid polystyrene/divinyl benzene polymer matrix It is modified with sulphonate (S) strong cation exchange groups. SOURCE resins have excellent physical and chemical characteristics, allowing high flow rates and consistent performance at both laboratory and process scales.
SOURCE 30S is suitable for intermediate purification steps in industrial processes when large volumes of partially purified material need to be processed. A high degree of purification can be obtained with high productivity.
Through the combination of high quality assurance standards and a patented manufacturing process, particle structure is consistent both bead-to-bead and batch-to batch.
As member of the BioProcess resin range, SOURCE 30S meets industrial demands with security of supply and comprehensive technical and regulatory support.
Parameter
SOURCE 30S
Order Information
Process-scale quantities are available. Columns not suitable for use with ÄKTAprime plus system.
Chromatography technique
Ion Exchange Chromatography
BioProcess resin
Yes
Ligand
Sulphonate group
Particle size, d50V1
~30 µm
Ion Exchanger Type
Strong cation exchanger
Matrix
Polystyrene/divinylbenzene
Ligand Coupling Method
long, hydrophilic spacer arms
pH stability, operational2
2–13
pH stability, CIP3
1–14
pH ligand fully charged4
Entire pH range
Pressure/Flow Specification:
2000 cm/h, 1000 kPa, FineLine 100 column, bed height 10 cm
Storage
4 to 30°C, 20% Ethanol + 0.2 M Sodium Acetate
Chemical stability
Stable in common ion exchange buffers
Certificate of Analysis
Yes
1Median particle size of the cumulative volume distribution.
2pH range where resin can be operated without significant change in function.
3pH range where resin can be subjected to cleaning- or sanitization-in-place without significant change in function.