Integrin activator-adjuvanted DNA vaccine against trypanosoma cruzi infection
Ended Project Grant Awarded Last action
- Award ID
- R44AI172437
- Recipient
-
7 Hills Pharma Inc. UEI CJJ6DE7APKY6
- Awarding agency
-
National Institute of Allergy and Infectious Diseases
National Institutes of Health, Department of Health and Human Services
- Obligated
- $4,992,201
Award facts
- Assistance listing
- 93.855 Allergy and Infectious Diseases Research
- Completion date
- Originally
- Place of performance
- Texas, USA
Award details come from USAspending.gov.
Description
- Abstract
- Trypanosoma cruzi (TC) is the causative agent of chagas disease (CD). With >7 million recorded cases, ~81 million at risk of TC exposure in latin america, and large-scale migration from endemic to other countries including the USA where autochthonous transmission of TC also occurs, CD remains a global health concern. Currently no therapies exist to prophylactically treat adults traveling to endemic countries or those who may already be infected with TC. The economic burden for chagas cardiomyopathy and heart failure, estimated at ~$10 billion due to healthcare costs and lost productivity by premature deaths, provides a strong rationale for investment in the development of immune therapies against CD. We have already developed a two-component DNA vaccine (TCG2/TCG4) for CD and demonstrated preclinical efficacy of this prototype vaccine in controlling TC pathogenesis in a mouse model. Vaccine efficacy depends heavily on the induction of a robust TH1 response for the clearance of intracellular pathogens like TC. Integrin cell adhesion molecules A4SS1 and ALSS2 and their ligands, vcam-1 and icam-1, respectively, play an essential role in the activation of adaptive immunity. Prolonged integrin-mediated interactions between t cells and antigen presenting cells (apcs), particularly via the ALSS2/icam-1 axis, are required for effective t cell priming and long-term t cell mediated memory. Augmenting cell adhesion may facilitate t cell priming and subsequent immune responses. 7HP349 is a clinical- stage, first-in-concept, oral, small-molecule, positive allosteric activator of A4SS1 and ALSS2 integrins, which could facilitate endogenous integrin ligand-receptor engagement, promote cell adhesion, and improve t helper function and the effectiveness of CD vaccination. We have demonstrated that 7HP349 augments the effectiveness of the prototype TCG2/TCG4 DNA vaccine in a mouse model of CD. Additionally, 7HP349 has a favorable preclinical safety and pharmacokinetic profile, and was found to be safe and well tolerated in a phase 1 clinical study in healthy male subjects. In this sbir grant application, we propose to develop a vaccination regimen for CD consisting of a bicistronic DNA vaccine (BCV)-adjuvant combination with 7HP349 or another integrin activator, 7HP577, demonstrate preclinical efficacy and safety of the BCV-adjuvant combination, and manufacture clinical grade cgmp BCV and adjuvant to support a phase i/IIA clinical study to assess the safety and tolerability of the vaccine-adjuvant combination, and thereafter to evaluate its immunogenicity in humans. The proposed studies will allow the development of a novel vaccination regimen to prophylactically treat TC infection and CD.
Transactions
| Action | Obligated | Date |
|---|---|---|
| Amendment | $0 | |
| Amendment | $997,867 | |
| Amendment | $997,867 | |
| Amendment | $997,867 | |
| Amendment | $999,300 | |
| Original award | $999,300 |
Quick answers
Who received award R44AI172437?
R44AI172437 was awarded to 7 Hills Pharma Inc. by National Institute of Allergy and Infectious Diseases (National Institutes of Health) on July 14, 2022.
How much is award R44AI172437 worth?
$4,992,201 has been obligated on R44AI172437.
On GovTribe
See this award's full record
- Every transaction and subaward
- The recipient's other awards and teaming partners
- Similar grant awards
- Ask GovTribe AI about this award