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Intracellular delivery is essential for advancing research and clinical applications, yet it presents unique challenges when working with different cell types and biomolecules.

In a recent episode of the Smart Biotech Scientist podcast, David Brühlmann spoke with Armon Sharei, the founder and CEO of Portal Bio, about the future of cell therapy, the hurdles of intracellular delivery, and groundbreaking innovations in drug screening.

Armon’s journey began at MIT, where his initial focus on chemical engineering evolved into a passion for cell engineering. While exploring innovative methods for introducing materials into cells, he discovered a novel mechanism: squeezing cells to temporarily disrupt their membranes, allowing materials to diffuse in.

Armon explained that optimizing delivery parameters - such as pore size and the speed at which cells pass through specialized membranes - can significantly enhance efficiency. "If you've optimized it, one time is enough," he noted. "We can get above 80% delivery and viability pretty easily for most cell types." He emphasized the importance of tailoring pore sizes to specific cell types, such as smaller pores for T cells compared to stem cells. Additionally, the flow speed of cells through the membrane is critical; moving too slowly renders the process ineffective, while moving too quickly can damage the cells.

Tune in to this episode to find out more about:

• Addressing Intracellular Delivery Challenges: Portal Bio’s breakthrough technology uses mechanical deformation to open a cell’s lipid bilayer, allowing materials to diffuse in. This approach overcomes the limitations of traditional methods like electroporation or nanoparticle-mediated delivery, which often depend on molecular charge or risk damaging cells.
• Delivering a Wide Range of Molecules: Portal Bio’s technology is versatile, capable of delivering DNA, RNA, peptides, proteins, and more. Unlike methods tailored to specific molecules, this platform supports diverse applications. For instance, RNA operates in the cytoplasm, making delivery straightforward, while CRISPR complexes require nuclear localization sequences to enable gene editing in the nucleus.
• Streamlining Drug Screening: Portal Bio’s technology also revolutionizes drug screening. Traditional approaches often struggle with impermeable small molecules, leading to lengthy and uncertain drug development processes. By enabling high-throughput screening, Portal Bio accelerates the evaluation of numerous drug candidates, identifying promising options before chemical modifications are necessary.

As bioprocesses grow more advanced, the demand for efficient and versatile intracellular delivery methods becomes increasingly critical. Armon’s insights underscore a transformative shift in the technologies and processes shaping the future of cell therapy and bioprocessing.

Connect with Armon Sharei

LinkedIn: https://www.linkedin.com/in/armonsharei

Portal: https://www.portal.bio

Wondering how to develop cell and gene therapies with peace of mind? Schedule your free assessment to propel your success: https://bruehlmann-consulting.com/assessment

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