1
|
Chee E, Mihalko E, Nellenbach K, Sollinger J, Huang K, Hon M, Pandit S, Cheng K, Brown A. Wound-triggered shape change microgels for the development of enhanced biomimetic function platelet-like particles. J Biomed Mater Res A 2024; 112:613-624. [PMID: 37846887 DOI: 10.1002/jbm.a.37625] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 09/14/2023] [Accepted: 10/03/2023] [Indexed: 10/18/2023]
Abstract
Platelets play a pivotal role in hemostasis and wound healing and conditional shape change is an important component of platelet functionality. In normal circumstances, platelets travel through the circulatory system in an inactive rounded state, which enables platelets to easily move to vessel walls for attachment. When an injury occurs, platelets are prompted by molecules, such as thrombin, to shift into a stellate shape and increase exposure of fibrin-binding receptors. When active, platelets promote hemostasis and clot retraction, which enhances clot stability and promotes healing. However, in conditions where platelets are depleted or hyporeactive, these functions are diminished and lead to inhibited hemostasis and healing. To treat platelet depletion, our group developed platelet-like particles (PLPs) which consist of highly deformable microgels coupled to fibrin binding motif. However, first generation PLPs do not exhibit wound-triggered shape change like native platelets. Thus, the objective of these studies was to develop a PLP formulation that changes shape when prompted by thrombin. To create thrombin-sensitive PLPs (TS-PLPs), we incorporated a thrombin-cleavable peptide into the microgel body and then evaluated PLP properties before and after exposure to thrombin including morphology, size, and in vitro clot retraction. Once thrombin-prompted shape change ability was confirmed, the TS-PLPs were tested in vivo for hemostatic ability and subsequent wound healing outcomes in a murine liver trauma model. We found that TS-PLPs exhibit a wound-triggered shape change, induce significant clot retraction following exposure to thrombin and promote hemostasis and healing in vivo after trauma.
Collapse
Affiliation(s)
- Eunice Chee
- Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina-Chapel Hill, Raleigh, North Carolina, USA
- Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina, USA
| | - Emily Mihalko
- Trauma and Transfusion Medicine Research Center, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Kimberly Nellenbach
- Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina-Chapel Hill, Raleigh, North Carolina, USA
- Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina, USA
| | - Jennifer Sollinger
- Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina-Chapel Hill, Raleigh, North Carolina, USA
| | - Ke Huang
- Department of Molecular Biomedical Sciences, North Carolina State University, Raleigh, North Carolina, USA
| | - Mason Hon
- Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina-Chapel Hill, Raleigh, North Carolina, USA
| | - Sanika Pandit
- Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina-Chapel Hill, Raleigh, North Carolina, USA
- Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina, USA
| | - Ke Cheng
- Department of Molecular Biomedical Sciences, North Carolina State University, Raleigh, North Carolina, USA
| | - Ashley Brown
- Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina-Chapel Hill, Raleigh, North Carolina, USA
- Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina, USA
| |
Collapse
|
2
|
Lashof-Sullivan M, Holland M, Groynom R, Campbell D, Shoffstall A, Lavik E. Hemostatic Nanoparticles Improve Survival Following Blunt Trauma Even after 1 Week Incubation at 50 °C. ACS Biomater Sci Eng 2016; 2:385-392. [PMID: 27672679 DOI: 10.1021/acsbiomaterials.5b00493] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
According to the CDC, the leading cause of death for both men and women between the ages of 5 and 44 is traumatic injury. Blood loss is the primary cause of death at acute time points post trauma. Early intervention is critical to save lives, and yet there are no treatments to stop internal bleeding that can be deployed in the field. In this work, we developed hemostatic nanoparticles that are stable at high temperatures (50 °C for 7 days) and are still effective at stopping bleeding and improving survival over the one hour time period in a rat liver injury model. These particles are exceptionally simple: PLA-based nanospheres functionalized with PEG terminated with variants of the RGD motif. This simple system can be stored at temperatures up to 50°C and maintain size, shape, and efficacy. The particles lead to a reduction in bleeding and increased acute survival with significance compared to both control particles and saline. Overall, these hemostatic nanoparticles offer an important step towards an immediate intervention in the field to stop bleeding and improve survival.
Collapse
Affiliation(s)
- Margaret Lashof-Sullivan
- Biomedical Engineering, Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH, 44106
| | - Mark Holland
- Macromolecular Science and Engineering, Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH, 44106
| | - Rebecca Groynom
- Biomedical Engineering, Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH, 44106
| | - Donald Campbell
- Biomedical Engineering, Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH, 44106
| | - Andrew Shoffstall
- Biomedical Engineering, Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH, 44106
| | - Erin Lavik
- Chemical, Biochemical, and Environmental Engineering, University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, MD, 21250
| |
Collapse
|