Where do we stand now regarding protein nanoparticles? Perspectives from the Six Thinking Hats framework

Area of Science:

• Nanotechnology
• Biomedical Engineering
• Drug Delivery Systems

Background:

• Protein nanoparticles (PNPs) are emerging as advanced platforms for precision therapy.
• Traditional review models often fail to systematically address the multifaceted challenges in PNP development and clinical translation.

Purpose of the Study:

• To introduce and apply Edward de Bono's Six Thinking Hats (STH) framework for a structured analysis of protein nanoparticle development.
• To systematically evaluate the characteristics, advantages, challenges, and solutions related to PNPs in drug delivery.

Main Methods:

• A systematic literature search was conducted on PubMed and Web of Science (2016-2025) using keywords: 'protein nanoparticles,' 'drug delivery,' and 'Six Thinking Hats.'
• Peer-reviewed literature on PNP design, clinical translation, and bottleneck resolution was screened.
• The STH framework was employed to modularly analyze PNPs' core attributes, clinical benefits, challenges, and innovative solutions.

Main Results:

• The STH framework facilitated a comprehensive analysis of PNPs, including their biocompatibility, targeting capabilities, immunogenicity, and production scalability.
• Innovative solutions such as surface engineering and biomimetic camouflage were identified to address key challenges.
• A phased translational roadmap for PNPs was outlined.

Conclusions:

• The STH framework provides a robust, multidimensional methodology for analyzing PNPs and addressing critical bottlenecks like stability, production, and targeting.
• This framework holds significant potential for accelerating the clinical translation of PNPs and other nanodelivery systems.
• The STH approach can foster interdisciplinary innovation in nanomedicine.