Use of Progenitor Biological Bandages in Burn Care (Bru_PBB)

Summary

Skin, as the outermost organ of the human body, serves as a protective layer from microorganisms and external forces, and allows controlling fluid loss among other important functions (sensory, immune and aesthetic functions). When the skin is burned, the extent of the depth can be classified in 1rst, 2nd superficial to deep, 3rd and 4th degree burns, according to the different layers of the skin and tissue that are affected in depth. Severity of a burn can also be characterized by total body surface area (TBSA), location of the burn injury, subject characteristics and age according to the European Practice Guidelines for Burn Care. The actual gold standard treatment for 3rd or deep 2nd degree burn wounds is skin autografting that means transplantation of healthy skin taken from an undamaged donor site on the patient to the wound site, therefore creating a donor site wound (DSW). The Burn Center of the CHUV has developed Progenitor Biological Bandages (PBB), composed of human skin progenitor cells (produced and stored GMP clinical cell bank with the Hospital accredited Cell Production Center, CPC) seeded on a biodegradable collagen scaffold (Resorba®), to support wound healing of DSW, as well as 2nd degree burn wounds. PBB have been applied at the CHUV under emergency circumstances over the last 20 years in children and adults with a TBSA higher than 10% and 20%, respectively. These PBB aim to increase the spontaneous healing of 2nd superficial and deep burns to avoid the skin autograft, and therefore prevent the creation of a second wound with the DSW. Furthermore, if skin grafting cannot be avoided, in the case of a 3rd or 2nd degree deep burns that do not close spontaneously, the use of PBB is an advantage for treating DSW in order to accelerate its healing process and therefore use the same donor site for future treatments. The aim of this study is to demonstrate the efficacy of the PBB treatment of the DSW compared to standard-care treatment (Jelonet®), and therefore verify our hypothesis of higher performance of PBB. The investigators would like also to assess the efficacy of the DSW treatment on short- and long-term periods, as well as to collect observational data on 2nd degree burn wound treated with PBB. Furthermore, another objective of this study is to confirm the safety of the PBB on DSW and 2nd degree burn wounds.

Timeline

Start

2025-07-01

Primary completion

2025-07-17

Completion

2025-07-17

Outcome

Outcome not reported

Stopped: “Following issues with the quality of the clinical cell banks used to manufacture the biological dressings, we decided not to implement this research to not compromise neither the patient safety, nor the expected efficacy of the treatment.”

Publications

• Background Hohlfeld J, de Buys Roessingh A, Hirt-Burri N, Chaubert P, Gerber S, Scaletta C, Hohlfeld P, Applegate LA. Tissue engineered fetal skin constructs for paediatric burns. Lancet. 2005 Sep 3-9;366(9488):840-2. doi: 10.1016/S0140-6736(05)67107-3.
• Background De Buys Roessingh AS, Hohlfeld J, Scaletta C, Hirt-Burri N, Gerber S, Hohlfeld P, Gebbers JO, Applegate LA. Development, characterization, and use of a fetal skin cell bank for tissue engineering in wound healing. Cell Transplant. 2006;15(8-9):823-34. doi: 10.3727/000000006783981459.
• Background Abdel-Sayed P, Michetti M, Scaletta C, Flahaut M, Hirt-Burri N, de Buys Roessingh A, Raffoul W, Applegate LA. Cell therapies for skin regeneration: an overview of 40 years of experience in burn units. Swiss Med Wkly. 2019 May 19;149:w20079. doi: 10.4414/smw.2019.20079. eCollection 2019 May 6.
• Background Abdel-Sayed P, Hirt-Burri N, de Buys Roessingh A, Raffoul W, Applegate LA. Evolution of Biological Bandages as First Cover for Burn Patients. Adv Wound Care (New Rochelle). 2019 Nov 1;8(11):555-564. doi: 10.1089/wound.2019.1037. Epub 2019 Oct 16.
• Background Laurent A, Lin P, Scaletta C, Hirt-Burri N, Michetti M, de Buys Roessingh AS, Raffoul W, She BR, Applegate LA. Bringing Safe and Standardized Cell Therapies to Industrialized Processing for Burns and Wounds. Front Bioeng Biotechnol. 2020 Jun 19;8:581. doi: 10.3389/fbioe.2020.00581. eCollection 2020.

Drugs

Indications

No indication recorded.