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| Primary information |
|---|
| ID | 16180 |
| Therapeutic ID | Th1693 |
| Protein Name | P113D |
| Sequence | NA
|
| Molecular Weight | NA |
| Chemical Formula | NA |
| Isoelectric Point | NA |
| Hydrophobicity | NA |
| Melting point | NA |
| Half-life | NA |
| Description | P113D is a novel 12 amino-acid antimicrobial peptide drug derived from histatins, which are compounds found naturally in human saliva. It is being pursued as a potential treatment for cystic fibrosis by Demegen, Inc. |
| Indication/Disease | For the potential treatment of cystic fibrosis and bacterial infections. |
| Pharmacodynamics | P113D has demonstrated activity against CF patient clinical isolates of bacteria that are resistant to traditional antibiotics. The compound is stable and maintains activity in sputum of CF patients. P113 was determined to be the smallest histatin fragment which retained antimicrobial activity equivalent to that of the parent compound. Interestingly, synthesizing P113 with D-amino acids gave rise P113D, a compound that was impervious to enzymatic degradation and maintained the antimicrobial activity of the parent compound. P113D also has very potent in vitro activity against a variety of Gram negative and positive bacteria including P. aeruginosa, S. aureus, H. influenzae, S. typhimurium, E. coli, S. epidermidis, S. mutans and S. sobrinus. In the case of P. aeruginosa and S. aureus, antibacterial activity has been demonstrated against a variety of CF patient clinical isolates which are resistant to traditional antibiotics. P. aeruginosa isolates that produce thick alginate secretions (mucoid phenotype) are also susceptible to killing by P113D. |
| Mechanism of Action | For both bacteria and fungi such as Candida albicans, P113D has been shown to kill cells as opposed to simply inhibiting their growth. It has been demonstrated that P113D acts by binding to the cell surface and increasing the permeability of both the outer and inner membranes of the cells of Gram negative bacteria, killing them within seconds. |
| Toxicity | NA |
| Metabolism | NA |
| Absorption | NA |
| NA |
| Clearance | NA |
| Categories | NA |
| Patents Number | NA |
| Date of Issue | NA |
| Date of Expiry | NA |
| Drug Interaction | NA |
| Target | NA |
| Brand Name | NA |
| Company | NA |
| Brand Description | NA |
| Prescribed For | NA |
| Chemical Name | NA |
| Formulation | NA |
| Physical Appearance | NA |
| Route of Administration | NA |
| Recommended Dosage | NA |
| Contraindication | NA |
| Side Effects | NA |
| Useful Link 1 | Link |
| Useful Link 2 | NA |
| Remarks | NA |