Zelong Dou1, Daniel Muder2, Marta Baroncelli1, Ameya Bendre1, Alexandra Gkourogianni1, Lars Ottosson1, Torbjörn Vedung3, Ola Nilsson4. 1. Division of Pediatric Endocrinology and Center for Molecular Medicine, L8:01, Department of Women's and Children's Health, Karolinska Institutet and University Hospital, Stockholm, Sweden. 2. Department of Surgical Sciences, Uppsala University, Uppsala, Sweden. 3. Department of Surgical Sciences, Uppsala University, Uppsala, Sweden; Elisabeth Hospital, Aleris Healthcare, Uppsala, Sweden. 4. Division of Pediatric Endocrinology and Center for Molecular Medicine, L8:01, Department of Women's and Children's Health, Karolinska Institutet and University Hospital, Stockholm, Sweden; School of Medical Sciences, Örebro University and University Hospital, Örebro, Sweden. Electronic address: Ola.Nilsson@ki.se.
Abstract
OBJECTIVE: Perichondrium autotransplants have been used to reconstruct articular surfaces destroyed by infection or trauma. However, the role of the transplanted perichondrium in the healing of resurfaced joints have not been investigated. DESIGN: Perichondrial and periosteal tissues were harvested from rats hemizygous for a ubiquitously expressed enhanced green fluorescent protein (EGFP) transgene and transplanted into full-thickness articular cartilage defects at the trochlear groove of distal femur in wild-type littermates. As an additional control, cartilage defects were left without a transplant (no transplant control). Distal femurs were collected 3, 14, 56, 112 days after surgery. RESULTS: Tracing of transplanted cells showed that both perichondrium and periosteum transplant-derived cells made up the large majority of the cells in the regenerated joint surfaces. Perichondrium transplants contained SOX9 positive cells and with time differentiated into a hyaline cartilage that expanded and filled out the defects with Col2a1-positive and Col1a1-negative chondrocytes and a matrix rich in proteoglycans. At later timepoints the cartilaginous perichondrium transplants were actively remodeled into bone at the transplant-bone interface and at post-surgery day 112 EGFP-positive perichondrium cells at the articular surface were positive for Prg4. Periosteum transplants initially lacked SOX9 expression and despite a transient increase in SOX9 expression and chondrogenic differentiation, remained Col1a1 positive, and were continuously thinning as periosteum-derived cells were incorporated into the subchondral compartment. CONCLUSIONS: Perichondrium and periosteum transplanted to articular cartilage defects did not just stimulate regeneration but were themselves transformed into cartilaginous articular surfaces. Perichondrium transplants developed into an articular-like, hyaline cartilage, whereas periosteum transplants appeared to produce a less resilient fibro-cartilage.
OBJECTIVE: Perichondrium autotransplants have been used to reconstruct articular surfaces destroyed by infection or trauma. However, the role of the transplanted perichondrium in the healing of resurfaced joints have not been investigated. DESIGN: Perichondrial and periosteal tissues were harvested from rats hemizygous for a ubiquitously expressed enhanced green fluorescent protein (EGFP) transgene and transplanted into full-thickness articular cartilage defects at the trochlear groove of distal femur in wild-type littermates. As an additional control, cartilage defects were left without a transplant (no transplant control). Distal femurs were collected 3, 14, 56, 112 days after surgery. RESULTS: Tracing of transplanted cells showed that both perichondrium and periosteum transplant-derived cells made up the large majority of the cells in the regenerated joint surfaces. Perichondrium transplants contained SOX9 positive cells and with time differentiated into a hyaline cartilage that expanded and filled out the defects with Col2a1-positive and Col1a1-negative chondrocytes and a matrix rich in proteoglycans. At later timepoints the cartilaginous perichondrium transplants were actively remodeled into bone at the transplant-bone interface and at post-surgery day 112 EGFP-positive perichondrium cells at the articular surface were positive for Prg4. Periosteum transplants initially lacked SOX9 expression and despite a transient increase in SOX9 expression and chondrogenic differentiation, remained Col1a1 positive, and were continuously thinning as periosteum-derived cells were incorporated into the subchondral compartment. CONCLUSIONS: Perichondrium and periosteum transplanted to articular cartilage defects did not just stimulate regeneration but were themselves transformed into cartilaginous articular surfaces. Perichondrium transplants developed into an articular-like, hyaline cartilage, whereas periosteum transplants appeared to produce a less resilient fibro-cartilage.
Authors: Michael Chau; Zelong Dou; Marta Baroncelli; Ellie B Landman; Ameya Bendre; Masaru Kanekiyo; Alexandra Gkourogianni; Kevin Barnes; Lars Ottosson; Ola Nilsson Journal: NPJ Regen Med Date: 2022-09-16
Authors: Anastasiia D Kurenkova; Irina A Romanova; Pavel D Kibirskiy; Peter Timashev; Ekaterina V Medvedeva Journal: Int J Mol Sci Date: 2022-09-22 Impact factor: 6.208