Oral delivery of angiotensin converting enzyme 2 (ACE2) or angiotensin-(1-7)-bioencapsulated in plant cells attenuates pulmonary hypertensions, cardiac dysfunction and development of autoimmune and experimentally induced ocular disorders
US10806775B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 29, 2019 |
| Grant date | Oct 20, 2020 |
| Priority date | — |
| Expiry date | May 29, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A50/30
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Emerging evidence indicates that diminished activity of the vasoprotective axis of the renin-angiotensin system, constituting angiotensin converting enzyme2 (ACE2) and its enzymatic product, angiotensin-(1-7) [Ang-(1-7)] contribute to pulmonary hypertension (PH). However, clinical success for long-term delivery of ACE2 or Ang-(1-7) would require stability and ease of administration to increase patient compliance. Chloroplast expression of therapeutic proteins enables their bioencapsulation within plant cells to protect from acids and gastric enzymes; fusion to a transmucosal carrier facilitates effective systemic absorption. Oral feeding of rats with bioencapsulated ACE2 or Ang-(1-7) attenuated monocrotaline (MCT)-induced increase in right ventricular systolic pressure, decreased pulmonary vessel wall thickness and improved right heart function in both prevention and reversal protocols. Furthermore, combination of ACE2 and Ang-(1-7) augmented the beneficial effects against cardio-pulmonary pathophysiology induced by MCT administration.Experiments have also been performed which indicate that this approach is also suitable for the treatment or inhibition of experimental uveitis and a…
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