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Related Concept Videos

Bioavailability Enhancement: Drug Permeability Enhancement01:27

Bioavailability Enhancement: Drug Permeability Enhancement

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Body:After oral administration, poor permeability often limits the rate at which drugs are absorbed through the intestinal epithelium. Enhancing drug permeability is crucial for effective therapy, and several strategies have been developed to overcome this challenge.One effective strategy involves the use of lipid-based formulations. These formulations enhance dissolution and solubility, targeting physiological mechanisms to increase drug absorption. This includes stimulating bile salt...
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Drug Delivery: Overview01:16

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The selection of a drug's delivery route depends upon its physicochemical properties, including lipid or water solubility and ionization, as well as the therapeutic requirement, such as immediate or sustained effect. These routes can be divided into three primary categories: enteral, parenteral, and topical.
Enteral delivery involves administering drugs directly through swallowing, sublingual placement, or buccal application. Orally administered drugs predominantly navigate the...
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Drugs must traverse multiple biological barriers, such as multi-layered skin, single-layered intestinal epithelium, and the plasma membrane, to reach their target sites within the body. The plasma membrane, a highly structured composite of phospholipids, carbohydrates, and proteins, is the cell's protective boundary, facilitating selective substance exchange.
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Mechanisms of Drug Absorption: Paracellular, Transcellular, and Vesicular Transport01:23

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Drugs need to permeate cell membranes to reach their target sites after administration. Orally administered drugs must transcend intestinal epithelial membrane barriers to infiltrate the systemic circulation. Drugs with a molecular weight of less than 500 Daltons diffuse through gaps between neighboring cells, called paracellular pathways.
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Bioavailability Enhancement: Determination and Conceptual Approaches in Overcoming Bioavailability Problems01:22

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Body:Bioavailability is a critical pharmacological concept that measures the extent and rate at which an active drug ingredient or therapeutic moiety enters the systemic circulation, remaining unchanged. It's a pivotal factor in determining a drug's efficacy and safety.The Biopharmaceutics Classification System (BCS) plays an essential role in drug development by categorizing drugs into four classes based on their solubility and permeability. This classification aids in understanding drug...
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Drug Delivery: Miscellaneous Routes01:22

Drug Delivery: Miscellaneous Routes

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Drug delivery methods like oral inhalation, nasal sprays, transdermal patches, eye drops, intravitreal injection,  and rectal administration provide localized effects with reduced toxicity.
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From Bioactive Peptides to Transdermal Peptides: An Emerging Strategy for Revolutionizing Drug Delivery.

Guangpu Yang1, Yixuan Li1, Jingwen Tian1

  • 1Shandong Provincial Key Laboratory of Natural Molecule Discovery and Delivery, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, P. R. China.

Macromolecular Bioscience
|January 14, 2026
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Summary

Transdermal peptides enhance drug delivery across the skin by temporarily disrupting the skin barrier. These engineered peptides offer potential for advanced therapies and cosmetics.

Keywords:
bioactive peptidesskin permeation mechanismsskin transmissiontransdermal peptides

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Area of Science:

  • Biochemistry and Pharmaceutical Sciences
  • Dermatology and Drug Delivery

Background:

  • Bioactive peptides can be engineered into transdermal peptides for improved drug delivery.
  • Transdermal peptides offer a transformative strategy for delivering macromolecular drugs, proteins, and nucleic acids.
  • Understanding peptide structure and skin interactions is key to optimizing transdermal delivery.

Purpose of the Study:

  • To review the structural classifications and biological sources of bioactive peptides.
  • To elucidate the design principles and skin penetration mechanisms of transdermal peptides.
  • To explore the diverse applications and future potential of transdermal peptides in therapeutics and cosmetics.

Main Methods:

  • Review of structural classifications of bioactive peptides (short, linear, cyclic, cationic, anionic, neutral).
  • Analysis of design principles focusing on hydrophilic-hydrophobic balance, molecular weight, and conformational stability.
  • Examination of skin permeation mechanisms, including interactions with skin lipids and keratins, and pathways like endocytosis.

Main Results:

  • Transdermal peptides transiently disrupt the stratum corneum barrier, facilitating drug permeation.
  • Applications span localized therapies (anticancer, antimicrobial), cosmetics (whitening, anti-aging), and regenerative medicine (hair, wound healing).
  • Combination with advanced delivery systems (nanocarriers, microneedles) enhances targeting and controlled release.

Conclusions:

  • Transdermal peptides represent a significant advancement in transdermal drug delivery.
  • Challenges include peptide immunogenicity and scalable synthesis.
  • Future integration with smart technologies and AI promises personalized transdermal therapeutics.