ALPHA LABS LIMITED
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Polyplus Transfection

The Gold Standard in Transfection. Accelerated.

When your research reaches the clinical frontier, don’t let delivery be your bottleneck.
​In the competitive landscapes of HKU’s stem cell labs and the Science Park’s biotech startups, Polyplus-transfection® is the undisputed name in nucleic acid delivery. Alpha Labs Limited brings you the industry-leading reagents that bridge the gap from benchtop discovery to large-scale manufacturing. From the world-renowned jetOPTIMUS® for everyday DNA transfection to the clinical-grade PEIpro® for viral vector production, we provide the scalability and efficiency required by Hong Kong’s top innovators.
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Stop settling for low yields and high toxicity. Whether you are working with mRNA, CRISPR/Cas9, or viral vectors (AAV, Lentivirus), Polyplus solutions are engineered for maximum titer and minimal stress.

The Polyplus Edge: From Discovery to Clinic

1. Research Grade Transfection (In Vitro)
  • jetPRIME®: The versatile gold standard for daily DNA and siRNA co-transfection, offering high efficiency and low toxicity in routine cell lines.
  • jetOPTIMUS®: A best-in-class nanotechnology reagent designed specifically for hard-to-transfect cells, including primary cells and stem cells, without compromising viability.
  • jetMESSENGER®: Specialized mRNA transfection reagent that enables high efficiency in slow-dividing or "difficult" cells by bypassing the nuclear envelope.

2. Bioproduction & Viral Vector Manufacturing
  • PEIpro®: The most cited linear PEI-based reagent for scalable viral vector production. It is available in HQ (High Quality) and GMP grades to support your transition from research to clinical trials.
  • FectoVIR®-AAV: A next-generation reagent optimized specifically to boost AAV titers and simplify the scale-up process in suspension cell systems.
  • FectoPRO®: Engineered for high-yield transient protein and antibody expression in CHO and HEK-293 suspension cultures.

3. In Vivo Nucleic Acid Delivery
  • in vivo-jetPEI®: The most reliable non-viral vector for animal studies, currently utilized in numerous human clinical trials for gene therapy and mRNA vaccine development.

4. Protein Production in Suspension Cells
  • FectoPRO®: This is the most powerful reagent for transient protein and antibody expression in CHO and HEK-293 suspension cells. It is specifically designed to achieve amazing yields with low DNA concentrations, making it cost-effective for larger volumes.
  • FectoCHO® Expression System: A complete kit (including reagent and chemically defined media) specifically optimized for CHO cells, ensuring high-density growth and superior protein quality.

5. Large-Scale Viral Vector Manufacturing
  • FectoVIR®-AAV: While PEIpro is the gold standard for general use, FectoVIR-AAV was developed specifically for AAV production. It reduces the amount of DNA needed and can increase viral titers by up to 10-fold in suspension bioreactors.
  • PEIpro®-GMP: For your clinical-stage customers at the Science Park, you can supply the GMP-grade version. This is the exact same chemistry as the research-grade PEIpro but manufactured under strict regulatory compliance for use in human gene therapy.​
Polyplus official website
Need a quote or a technical protocol for Polyplus products? WhatsApp us at +852 9662 0635 for immediate local support."
High transfection efficiency starts with a stable cell environment. Ensure your cells are at peak performance using BioLamina’s Biolaminin® substrates before starting your jetOPTIMUS® protocol.

F&Q

  • Q: Can I use jetOPTIMUS® for cells grown in antibiotic-supplemented media?
    • A: Yes. Unlike many other reagents, jetOPTIMUS® is compatible with media containing penicillin/streptomycin, meaning you don't have to change your media before or after transfection.

  • Q: What is the primary difference between PEIpro® and standard branched PEI?
    • A: PEIpro® is a highly characterized, linear polyethylenimine with a narrow molecular weight distribution. This results in significantly higher viral titers and better reproducibility compared to "home-brew" or lower-grade PEI.
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  • Q: Is jetMESSENGER® suitable for co-transfection of DNA and mRNA?
    • A: jetMESSENGER® is optimized specifically for mRNA. For co-transfection, we generally recommend using jetOPTIMUS®, but for high-efficiency mRNA delivery in neurons or stem cells, jetMESSENGER® is the superior standalone choice.
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