Cited by 186Advanced Drug Delivery SystemsDrug Solubulity and Delivery SystemsProteins in Food Systems

Past, Present, and Future Technologies for Oral Delivery of Therapeutic Proteins

Open access
Singh, Rajesh, Singh, Shailesh, Lillard, James W.·2008·Journal of Pharmaceutical Sciences

Abstract

Biological drugs are usually complex proteins and cannot be orally delivered due to problems related to degradation in the acidic and protease-rich environment of the gastrointestinal (GI) tract. The high molecular weight of these drugs often results in poor absorption into the periphery when administered orally. The most common route of administration for these therapeutic proteins is injection. Most of these proteins have short serum half-lives and need to be administered frequently or in high doses to be effective. So, difficulties in the administration of protein-based drugs provides the motivation for developing drug delivery systems (DDSs) capable of maintaining therapeutic drug levels without side effects as well as traversing the deleterious mucosal environment. Employing a polymer as an entrapment matrix is a common feature among the different types of systems currently being pursued for protein delivery. Protein release from these matrices can occur through various mechanisms, such as diffusion through or erosion of the polymer matrix, and sometimes a combination of both. Encapsulation of proteins in liposomes has also been a widely investigated technology for protein delivery. All of these systems have merit and our worthy of pursuit.

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  • The limited bioavailability of orally administered mAbs is due to limited penetration across the intestinal epithelium and susceptibility to enzymatic degradation by proteases and peptidases in the intestinal lumen.

    “The limited bioavailability of orally administered mAbs is due to their limited penetration across the intestinal epithelium16 and susceptibility to enzymatic degradation by proteases and peptidases in the intestinal lumen.17”

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1 of the 184 references couldn’t be matched to a known paper.

Research works printed but not linked: 2

  1. [64]Porter CJ Davies MC Davis SS Illum L Domb A 1994 Microparticulate system for site-specific therapy-bone marrow targeting Site specific pharmacotherapy New York Wiley 157 203
  2. [78]Peppas NA Lowman AM Frokjaer S Christrup L Krogsgaard-Larsen P 1998 Protein delivery from novel bioadhesive complexation hydrogels Peptide and protein delivery, Alfred Benzon symposium 43 Copenhagen Munksgaard 206 216

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Authors
Singh, R., Singh, S., & Lillard, J. W.
Affiliations
University of Louisville (US)
Corresponding author
Lillard, James W.
Venue
Journal of Pharmaceutical Sciences
Publisher
Elsevier BV
Published
2008-07
Volume
97
Issue
7
Pages
2497-2523
ISSN
0022-3549 (ISSN-L)
OpenAlex
W1966939994
Cited by
186
References
184
Citations by year
2026: 3 · 2025: 6 · 2024: 9 · 2023: 13 · 2022: 14 · 2021: 12 · 2020: 10 · 2019: 6 · 2018: 12 · 2017: 6 · 2016: 14 · 2015: 13 · 2014: 13 · 2013: 10 · 2012: 13
FWCI
0.55
Type
journal article
Language
en
Open access
Locations
  • Journal of Pharmaceutical Sciences (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (5p60md000525-04)
  • National Cancer Institute (U54CA118638)
  • National Institute of Allergy and Infectious Diseases (AI 057808, R01AI057808)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK58967, R03DK058967)
  • National Center for Research Resources (RR 03034, G12RR003034)
  • National Institute on Minority Health and Health Disparities (MD00525, P60-MD000525)
Topics
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmaceutical Science › Advanced Drug Delivery Systems
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmaceutical Science › Drug Solubulity and Delivery Systems
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Proteins in Food Systems
Keywords
oral drug delivery, therapeutic proteins, protein degradation, gastrointestinal tract, drug delivery systems, protein encapsulation, liposomes, mucosal barrier, serum half-life
MeSH terms
Absorption, Administration, Oral, Biocompatible Materials, Drug Carriers, Drug Stability, Liposomes, Particle Size, Polymers, Proteins, Technology, Pharmaceutical, Drug Delivery Systems, Nanoparticles

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