Delivering colloidal nanoparticles to mammalian cells: a nano-bio interface perspective

Area of Science:

• Materials Science
• Cellular Nanobiotechnology
• Nanomedicine

Background:

• Multifunctional colloidal nanoparticles offer potential for targeted delivery but their behavior in biological systems is complex.
• Assumptions on structure-activity relationships often fail to predict nanoparticle responses in vivo.
• Understanding nanoparticle-cell interactions is key for clinical translation.

Purpose of the Study:

• To review recent advances in colloidal nanoparticles for cellular nanobiotechnology.
• To explore nanoparticle transport into various cellular compartments (membrane, cytoplasm, mitochondria, nucleus).
• To discuss physical delivery methods and factors influencing nanoparticle internalization.

Main Methods:

• Review of recent literature on nanoparticle design and behavior.
• Analysis of conventional and advanced physical methods for intracellular delivery (microinjection, electroporation).
• Discussion of structure-activity relationships at the nano-bio interface.

Main Results:

• Nanoparticle structure and functionalization significantly impact nano-bio interface interactions and internalization routes.
• Physiological environment presents hurdles, leading to unexpected nanoparticle responses.
• Advanced physical methods offer quantitative intracellular delivery.

Conclusions:

• Tailoring nanoparticle properties is essential for controlled transport and improved nanomedicine outcomes.
• Further research into synergistic biological and chemical properties will enhance nanoconjugate efficacy.
• Overcoming challenges at the nano-bio interface is critical for successful clinical translation.