oral delivery of proteins and peptides peptides - Oral peptidesbenefits Oral delivery of therapeutic proteins/peptides Advancing the Frontier: Overcoming Challenges in Oral Delivery of Proteins and Peptides

Oral peptidesbenefits The quest for effective oral delivery of proteins and peptides has been a long-standing challenge in pharmaceutical research.作者：S Mehrotra·2023·被引用次数：31—Oral delivery of peptides and proteins (PPs) can be considered the need of the hour due to the immense benefits of this route. This review aims. Historically, proteins and peptides have been administered via parenteral routes, such as injections, due to their inherent susceptibility to degradation within the gastrointestinal tract (GIT) and poor absorption. However, the inherent advantages of the oral route, including patient convenience, non-invasiveness, and improved compliance, continue to drive innovation in this field. This article delves into the multifaceted challenges and promising advancements in achieving successful oral delivery of proteins and peptidesOral delivery of protein and peptide drugs: from non-specific formulation approaches to intestinal cell targeting strategies..

The Physiological Hurdles: Why Oral Delivery is So Difficult

The human digestive system presents a formidable barrier to the successful oral delivery of proteins and peptides. Several key factors contribute to this difficulty:

* Enzymatic Degradation: Upon ingestion, proteins are rapidly broken down by proteases in the stomach and small intestine into smaller peptides and free amino acids. This enzymatic digestion effectively inactivates the therapeutic potential of the original protein or peptide.

* Acidic Environment: The highly acidic environment of the stomach (pH 1AN INNOVATIVE SMART ORAL DELIVERY ....5-3.5) can also lead to the denaturation and degradation of sensitive protein and peptide molecules.

* Poor Permeability: The intestinal epithelial barrier, designed to absorb nutrients efficiently, has limited permeability for large molecules like proteins and peptides.作者：Q Zhu·2021·被引用次数：335—This review summarizes the history, the physiological barriers and the overcoming approaches, current clinical and preclinical technologies, and future ... Their size and hydrophilic nature hinder their passage across the cell membranes into the bloodstreamThe formulation ofproteins and peptidesasoraldosage forms requires advanced drugdeliverystrategies to overcome physiological challenges of the..

* First-Pass Metabolism: Even if some protein or peptide manages to cross the intestinal barrier, it is subject to significant metabolism in the liver before reaching systemic circulation, further reducing its bioavailability.

* Bitter Taste Perception: For some peptides, particularly those intended for oral administration, the bitter taste can be a significant deterrent to patient adherence, as noted in discussions on factors affecting protein and peptide absorptionOral delivery of protein and peptide drugs.

Strategies for Enhancing Oral Delivery

To overcome these physiological challenges, researchers are exploring a diverse range of innovative strategies. These approaches aim to protect the protein or peptide from degradation, enhance its absorption across the intestinal epithelium, and improve its overall bioavailability.

1作者：MA Al Tahan·2025·被引用次数：9—Upon ingestion,proteinsundergo digestion in the gastrointestinal tract (GIT), breaking down intopeptidesand free amino acids [2]. The .... Formulation and Encapsulation Technologies:

* Lipid-Based Nanocarriers: Liposomes for oral delivery of protein and peptide-based drugs are a prominent area of research. These vesicles can encapsulate proteins and peptides, shielding them from enzymatic and acidic degradation. Solid lipid nanoparticles are also being investigated for their potential to enhance oral bioavailability.

* Microspheres and Nanoparticles: Various types of nanoparticles are being developed for the oral delivery of protein and peptide drugs.作者：S Verma·2021·被引用次数：140—Protein and peptidetherapeutics are administered parenterally due to their poor bioavailability and stability, restricting their use. Hence, ... These can be made from biodegradable polymers or other materials that protect the therapeutic cargo and facilitate its release in specific regions of the GIT.作者：S Verma·2021·被引用次数：140—Protein and peptidetherapeutics are administered parenterally due to their poor bioavailability and stability, restricting their use. Hence, ... For example, TrabiOral™ is a platform technology for oral delivery of proteins and peptides using solid lipid nanoparticles.

* Enteric Coatings: Macrovehicles such as capsules or tablets coated with enteric polymers are designed to prevent premature drug release in the stomach.作者：VP Chavda·2025·被引用次数：2—This chapter focuses on the advancements and challenges in theoral delivery of protein and peptide-based drugs, highlighting the innovative strategies being ... These coatings dissolve in the more alkaline environment of the small intestine, allowing for targeted drug delivery.作者：S Verma·2021·被引用次数：140—Protein and peptidetherapeutics are administered parenterally due to their poor bioavailability and stability, restricting their use. Hence, ...

* Smart Delivery Systems: Innovative smart oral delivery systems are being developed that respond to specific stimuli within the GIT, such as pH changes or the presence of certain enzymes, to control the release of proteins and peptides作者：Q Zhu·2021·被引用次数：335—This review summarizes the history, the physiological barriers and the overcoming approaches, current clinical and preclinical technologies, and future ....

2. Absorption Enhancement Techniques:

* Permeation Enhancers: Certain chemical agents can transiently increase the permeability of the intestinal epithelium, allowing larger molecules like proteins and peptides to pass through. These absorption enhancers are a crucial component of many oral delivery strategies.

* Mucoadhesion: Developing formulations that can adhere to the mucus layer lining the intestinal wall can prolong the residence time of the drug at the absorption site, increasing the opportunity for uptake.作者：P Parida·2024·被引用次数：7—Protein and peptide-based drugshave greater therapeutic efficacy and potential applicationand lower toxicity compared to chemical entities ...

* Microneedles: While not strictly an oral route in the traditional sense, microneedles represent a promising method for oral protein and peptide delivery by enabling penetration of the oral mucosa and epithelium, bypassing some of the harsh digestive conditions.

3. Chemical Modification:

* PEGylation: Attaching polyethylene glycol (PEG) chains to proteins and peptides can increase their size, reduce their immunogenicity, and prolong their half-life in circulation, potentially improving their oral bioavailability.

* Pro-drug Strategies: Modifying the protein or peptide to create a pro-drug that is more stable in the GIT and then cleaved to release the active molecule in the bloodstream is another avenue being explored.

Current Status and Future Perspectives

The field of oral delivery of proteins and peptides has witnessed significant progress in recent years. Numerous current approaches and challenges associated with the routes and methods of oral administration of protein/peptide-based drugs are being addressed by ongoing researchRecent Progress in the Oral Delivery of Therapeutic .... Proteins and peptides (PPs) have gradually become more attractive therapeutic molecules than small molecular drugs due to their high selectivity and efficacy, and the achievement of oral peptide and protein delivery would represent a paradigm shift in therapeutic applicationsOral Delivery of Proteins and Peptides: Concepts ....

While challenges remain, the continuous development of novel materials for oral delivery of proteins and peptides and sophisticated delivery systems offers great hope. The ultimate goal is to make oral delivery of therapeutic proteins and peptides a viable and widespread option, significantly improving the quality of life for patients requiring chronic treatment with these powerful biologics. The journey towards efficient oral protein and peptide drugs delivery is ongoing, with a clear focus on improving oral bioavailability and overcoming the inherent physiological barriers. The potential for oral delivery of proteins, peptides, and some macromolecules promises to revolutionize drug therapy.