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Related Concept Videos

Vaccine Production01:23

Vaccine Production

Vaccine production involves a sequence of upstream and downstream processes to generate a safe and effective immunological product. It begins with cultivating microorganisms, such as viruses or bacteria, to obtain antigenic material. For viral vaccines, mammalian host cells are grown in bioreactors and subsequently infected with the target virus. The virus replicates within the host cells, which are lysed to release viral particles. This lysate is then clarified through filtration or...
Biopharmaceutical Factors Influencing Drug Product Design: Overview01:22

Biopharmaceutical Factors Influencing Drug Product Design: Overview

Rational drug product design integrates knowledge of the drug’s physicochemical properties, formulation components, manufacturing techniques, and intended route of administration. Each factor influences the drug’s performance, including how it is released, absorbed, and eliminated in the body.The physicochemical properties of a drug—such as solubility, stability, and particle size—affect its compatibility with excipients and the choice of dosage form. Excipients, though pharmacologically...
Oral Drug Delivery Systems: Introduction01:23

Oral Drug Delivery Systems: Introduction

Oral drug delivery is the most common route of administration due to its convenience, cost-effectiveness, and high patient compliance. It enables precise formulation to ensure proper drug dosage and bioavailability. The development of oral dosage forms considers drug properties such as solubility, stability, and absorption to optimize therapeutic efficacy.Tablets, capsules, liquids, and chewable formulations enhance drug stability, mask undesirable tastes, and improve patient experience.
Vaccinations01:51

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Formulation and Manufacturing Process: Physical Attributes of Generic Tablets and Capsules01:18

Formulation and Manufacturing Process: Physical Attributes of Generic Tablets and Capsules

Bioequivalence in generic drugs, such as tablets and capsules, refers to their pharmaceutical equivalence to the brand-name counterparts. However, for therapeutic equivalence, manufacturers must also consider physical attributes like size, shape, and weight (FDA Guidance for Industry, December 2003). Discrepancies in these aspects could impact patient compliance and cause medication errors. For instance, swallowing difficulties, often experienced with larger tablets or capsules, can lead to...
Vaccines01:21

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Vaccines are among the most effective tools in preventive medicine, designed to prepare the immune system to recognize and combat infectious agents. By introducing antigens—substances that the immune system identifies as foreign—vaccines stimulate an adaptive immune response that leads to immunological memory. This immunological memory enables the body to mount a faster and more effective response upon future exposures to the actual pathogen.Vaccines can be categorized based on the type of...

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Related Experiment Video

Updated: May 20, 2026

Preparation, Characteristics, Toxicity, and Efficacy Evaluation of the Nasal Self-Assembled Nanoemulsion Tumor Vaccine In Vitro and In Vivo
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Formulation design considerations for oral vaccines.

Jitinder Wilkhu1, Sarah E McNeil, Daniel J Kirby

  • 1Aston Pharmacy School, School of Life & Health Sciences, Aston University, Birmingham B4 7ET, UK.

Therapeutic Delivery
|July 27, 2012
PubMed
Summary

Developing effective oral vaccines faces challenges in delivering vaccines through the gastrointestinal tract. Optimizing particle characteristics and incorporating adjuvant properties are key strategies for successful oral vaccine formulation.

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Last Updated: May 20, 2026

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Area of Science:

  • Vaccinology
  • Biotechnology
  • Drug Delivery

Background:

  • Oral vaccination offers advantages in patient adherence and mass administration.
  • Significant barriers exist in the gastrointestinal tract, including low pH and enzymatic degradation, hindering vaccine efficacy.
  • Efficient delivery to M cells is crucial for immune response, but these cells are sparsely distributed.

Purpose of the Study:

  • To explore strategies for overcoming challenges in oral vaccine delivery.
  • To identify key considerations for formulating effective oral particulate vaccines.
  • To enhance M cell uptake and immune responses for oral vaccine candidates.

Main Methods:

  • Reviewing particle characteristics (size, charge, targeting, bioadhesion) to enhance M cell uptake.
  • Investigating the role of inherent adjuvant properties in particulate vaccines.
  • Analyzing options for building effective oral particulate vaccine formulations.

Main Results:

  • Optimizing particle characteristics can improve uptake by M cells.
  • Incorporating adjuvant properties into vaccine particulates can enhance immune responses.
  • A combination of optimized delivery and adjuvant properties is beneficial.

Conclusions:

  • Effective oral vaccine formulation requires careful consideration of particle design.
  • Strategies to enhance M cell uptake and immune stimulation are critical.
  • This review outlines options for developing successful oral particulate vaccines.