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Carney BC, Simbulan-Rosenthal CM, Gaur A, Browne BJ, Moghe M, Crooke E, Moffatt LT, Shupp JW, Rosenthal DS. Inorganic polyphosphate in platelet rich plasma accelerates re-epithelialization in vitro and in vivo. Regen Ther 2020; 15:138-148. [PMID: 33426212 PMCID: PMC7770352 DOI: 10.1016/j.reth.2020.07.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 06/25/2020] [Accepted: 07/16/2020] [Indexed: 12/19/2022] Open
Abstract
Wound healing requires well-coordinated events including hemostasis, inflammation, proliferation, and remodeling. Delays in any of these stages leads to chronic wounds, infections, and hypertrophic scarring. Burn wounds are particularly problematic, and may require intervention to ensure timely progression to reduce morbidity and mortality. To accelerate burn wound healing, Platelet-Rich Plasma (PRP)1 can be of value, since platelets release growth factor proteins and inorganic polyphosphates (polyP) that may be integral to wound healing. We used polyP-depleted keratinocyte (HaCaT) and fibroblast cell culture models to determine cell proliferation and scratch-wound repair to determine if polyP, platelet lysate, or combined treatment could accelerate wound healing. While polyP and PRP significantly reduced the open scratch-wound area in fibroblasts and keratinocytes, polyP had no effect on keratinocyte or fibroblast proliferation. PRP was also evaluated as a treatment in a murine model of full thickness wound healing in vivo, including a treatment in which PRP was supplemented with purified polyP. PRP induced significantly more rapid re-epithelialization by Day 3. Pure polyP enhanced the effects of PRP on epithelial tongues, which were significantly elongated in the PRP + high-dose polyP treatment groups compared to PRP alone. Thus, PRP and polyP may serve as an effective therapeutic combination for treating wounds.
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Key Words
- Inorganic polyphosphate
- Keratinocytes
- PPX1 exopolyphosphatase
- Wound healing
- endopolyphosphatase, PPN
- epidermal growth factor, EGF
- exopolyphosphatase, PPX
- human foreskin fibroblasts, HFF
- mammalian target of rapamycin, mTOR
- platelet-derived growth factor, PDGF
- platelet-poor plasma, PPP
- platelet-rich plasma, PRP
- polyP kinase, PPK
- polyphosphates, polyP
- reactive oxygen species, ROS
- total body surface area, TBSA
- transforming growth factor beta, TGFβ
- vacuolar transporter chaperone 4, VTC4
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Affiliation(s)
- Bonnie C. Carney
- Department of Biochemistry and Molecular and Cellular Biology, Georgetown University School of Medicine, Washington, DC, USA
- Firefighters' Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, DC, USA
| | - Cynthia M. Simbulan-Rosenthal
- Department of Biochemistry and Molecular and Cellular Biology, Georgetown University School of Medicine, Washington, DC, USA
| | - Anirudh Gaur
- Department of Biochemistry and Molecular and Cellular Biology, Georgetown University School of Medicine, Washington, DC, USA
| | - Benjamin J. Browne
- Firefighters' Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, DC, USA
| | - Manish Moghe
- Department of Biochemistry and Molecular and Cellular Biology, Georgetown University School of Medicine, Washington, DC, USA
| | - Elliott Crooke
- Department of Biochemistry and Molecular and Cellular Biology, Georgetown University School of Medicine, Washington, DC, USA
| | - Lauren T. Moffatt
- Department of Biochemistry and Molecular and Cellular Biology, Georgetown University School of Medicine, Washington, DC, USA
- Firefighters' Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, DC, USA
| | - Jeffrey W. Shupp
- Department of Biochemistry and Molecular and Cellular Biology, Georgetown University School of Medicine, Washington, DC, USA
- Firefighters' Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, DC, USA
- The Burn Center, Department of Surgery, MedStar Washington Hospital Center, Washington, DC, USA
- Department of Surgery, Georgetown University School of Medicine, Washington, DC, USA
| | - Dean S. Rosenthal
- Department of Biochemistry and Molecular and Cellular Biology, Georgetown University School of Medicine, Washington, DC, USA
- Corresponding author. Department of Biochemistry, 3900 Reservoir Road, BSB 333, Washington, DC, 20010, USA.Tel.: 202 687 1056; Fax: 202 687 4632.
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