PMID- 33440484 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210114 IS - 2373-9878 (Electronic) IS - 2373-9878 (Linking) VI - 2 IP - 5 DP - 2016 May 9 TI - Factorial Design of Experiments to Optimize Multiple Protein Delivery for Cardiac Repair. PG - 879-886 LID - 10.1021/acsbiomaterials.6b00146 [doi] AB - Myocardial infarction (MI) is a major cardiovascular disease responsible for millions of deaths annually. Protein therapies can potentially repair and regenerate the infarcted myocardium. However, because of the short half-lives of proteins in vivo, their low retention at the target tissue, and the lack of spatiotemporal cues upon injection, the efficacy of protein therapy can be limited. This efficacy can be improved by utilizing controlled release systems to overcome shortcomings associated with a direct bolus injection. Equally important is the determination of an optimal combination of different proteins having distinct roles in cardiac function and repairs to prevent or reverse the multiple pathologies that develop after infarction. In this work, we used a rat MI model to test a combination of potentially complementary proteins: tissue inhibitor of metalloproteinases 3 (TIMP-3), interleukin-10 (IL-10), basic fibroblast growth factor (FGF-2), and stromal cell-derived factor 1 alpha (SDF-1alpha). To achieve controlled and timed release of the proteins per their physiologic cues during proper tissue repair, we used a fibrin gel-coacervate composite. TIMP-3 and IL-10 were encapsulated in fibrin gel to offer early release, while FGF-2 and SDF-1alpha were encapsulated in heparin-based coacervates and distributed in the same fibrin gel to offer sustained release. We utilized a powerful statistical tool, factorial design of experiments (DOE), to refine this protein combination based on its improvement of ejection fraction 4 weeks after MI. We found that TIMP-3, FGF-2, and SDF-1alpha demonstrated significant contributions toward improving the ejection fraction, while the IL-10's effect was insignificant. The results also suggested that the higher doses tested for TIMP-3, FGF-2, and SDF-1alpha had greater benefit on function than lower doses and that there existed slight antagonism between TIMP-3 and FGF-2. Taken together, we conclude that factorial DOE can guide the evolution of multiple protein therapies in a small number of runs, saving time, money, and resources for finding the optimal dose and composition. FAU - Awada, Hassan K AU - Awada HK FAU - Johnson, Louis A AU - Johnson LA AD - SnapDat Inc., 733 West Foster Avenue, State College, Pennsylvania 16801, United States. FAU - Hitchens, T Kevin AU - Hitchens TK FAU - Foley, Lesley M AU - Foley LM FAU - Wang, Yadong AU - Wang Y LA - eng PT - Journal Article DEP - 20160429 PL - United States TA - ACS Biomater Sci Eng JT - ACS biomaterials science & engineering JID - 101654670 SB - IM OTO - NOTNLM OT - coacervate OT - controlled release OT - factorial design OT - fibrin gel OT - myocardial infarction OT - proteins EDAT- 2016/05/09 00:00 MHDA- 2016/05/09 00:01 CRDT- 2021/01/14 01:00 PHST- 2021/01/14 01:00 [entrez] PHST- 2016/05/09 00:00 [pubmed] PHST- 2016/05/09 00:01 [medline] AID - 10.1021/acsbiomaterials.6b00146 [doi] PST - ppublish SO - ACS Biomater Sci Eng. 2016 May 9;2(5):879-886. doi: 10.1021/acsbiomaterials.6b00146. Epub 2016 Apr 29.