Characterization of Novel OmpA-Like Protein of Leptospira interrogans That Binds Extracellular Matrix Molecules and Plasminogen

Abstract Background: Bone-tendon interface (enthesis) plays a pivotal role in relaxing load transfer between otherwise structurally and functionally distinct tissue types. Currently, decellularized extracellular matrix (DEM) from enthesis provide a natural three-dimensional scaffold with tissue-specific orientations of extracellular matrix molecules for enthesis regeneration, however, the content and distribution of collagen and proteoglycan in the decellularized book-shaped enthesis scaffolds from rabbit rotator cuff by SR-FTIR have not been reported.Methods: Native enthesis tissues (NET) harvested from rabbit rotator cuff were sectioned into cuboid (about 30 mm × 1.2 mm × 10 mm) for decalcified. The decellularized book-shaped enthesis scaffolds were conducted and intrinsic ultrastructure was evaluated by histological staining and scanning electron microscopy (SEM), respectively. The content and distribution of collagen and proteoglycan in the decellularized book-shaped enthesis scaffolds from rabbit rotator cuff were also measured innovatively by SR-FTIR.Results: The decellularized book-shaped enthesis scaffolds from rabbit rotator cuff were successfully obtaine©d. Histomorphology and SEM evaluated the decellularized effect and the structure of extracellular matrix during decellularization. After mechanical test, we found the failure load in the NET group was higher than that in the DEM group (P < 0.05), reached 1.32 times as much as that in the DEM group. Meanwhile, the stiffness of the DEM group was significantly lower than the NET group. Furthermore, the distributions of collagen and PGs content in the decellularized book-shaped enthesis scaffolds were decreased obviously after decellularization by SR-FTIR quantitative analysis.Conclusion: SR-FTIR was applied innovatively to characterize the histological morphology of native enthesis tissues from rabbit rotator cuff. Moreover, it can be used for quantitative mapping of the content and distribution of collagen and PGs content in the decellularized book-shaped enthesis scaffolds.

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Characterization of the distributions of collagen and PGs content in the decellularized book-shaped enthesis scaffolds by SR-FTIR

BMC Musculoskeletal Disorders ◽

10.1186/s12891-021-04106-x ◽

2021 ◽

Vol 22 (1) ◽

Author(s):

Qiang Shi ◽

Can Chen ◽

Muzhi Li ◽

Yang Chen ◽

Yan Xu ◽

...

Keyword(s):

Extracellular Matrix ◽

Rotator Cuff ◽

Load Transfer ◽

Three Dimensional ◽

Decellularized Extracellular Matrix ◽

Quantitative Mapping ◽

Extracellular Matrix Molecules ◽

Histological Staining ◽

Histological Morphology

Abstract Background Bone-tendon interface (enthesis) plays a pivotal role in relaxing load transfer between otherwise structurally and functionally distinct tissue types. Currently, decellularized extracellular matrix (DEM) from enthesis provide a natural three-dimensional scaffold with tissue-specific orientations of extracellular matrix molecules for enthesis regeneration, however, the distributions of collagen and PGs content in the decellularized book-shaped enthesis scaffolds from rabbit rotator cuff by SR-FTIR have not been reported. Methods Native enthesis tissues (NET) harvested from rabbit rotator cuff were sectioned into cuboid (about 30 mm × 1.2 mm × 10 mm) for decalcification. The decellularized book-shaped enthesis scaffolds and intrinsic ultrastructure were evaluated by histological staining and scanning electron microscopy (SEM), respectively. The distributions of collagen and PGs content in the decellularized book-shaped enthesis scaffolds from rabbit rotator cuff were also measured innovatively by SR-FTIR. Results The decellularized book-shaped enthesis scaffolds from rabbit rotator cuff were successfully obtained. Histomorphology and SEM evaluated the effect of decellularization and the structure of extracellular matrix during decellularization. After mechanical testing, the failure load in the NET group showed significantly higher than that in the DEM group (P < 0.05). Meanwhile, the stiffness of the DEM group was significantly lower than the NET group. Furthermore, the distributions of collagen and PGs content in the decellularized book-shaped enthesis scaffolds were decreased obviously after decellularization by SR-FTIR quantitative analysis. Conclusion SR-FTIR was applied innovatively to characterize the histological morphology of native enthesis tissues from rabbit rotator cuff. Moreover, this technology can be applied for quantitative mapping of the distribution of collagen and PGs content in the decellularized book-shaped enthesis scaffolds.

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LipL53, a temperature regulated protein from Leptospira interrogans that binds to extracellular matrix molecules

Microbes and Infection ◽

10.1016/j.micinf.2009.12.004 ◽

2010 ◽

Vol 12 (3) ◽

pp. 207-217 ◽

Cited By ~ 31

Author(s):

Tatiane R. Oliveira ◽

Mariana T. Longhi ◽

Amane P. Gonçales ◽

Zenaide M. de Morais ◽

Silvio A. Vasconcellos ◽

...

Keyword(s):

Extracellular Matrix ◽

Leptospira Interrogans ◽

Extracellular Matrix Molecules

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Molecular and immunological characterization of Pasteurella multocida serotype A:3 OmpA: evidence of its role in P. multocida interaction with extracellular matrix molecules

Microbial Pathogenesis ◽

10.1016/s0882-4010(03)00098-6 ◽

2003 ◽

Vol 35 (4) ◽

pp. 147-157 ◽

Cited By ~ 42

Author(s):

S.M. Dabo ◽

A.W. Confer ◽

R.A. Quijano-Blas

Keyword(s):

Extracellular Matrix ◽

Pasteurella Multocida ◽

Immunological Characterization ◽

Serotype A ◽

Extracellular Matrix Molecules

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Characterization of the Content and Distribution of Collagen and Proteoglycan in the Decellularized Book-Shaped Enthesis Scaffolds by SR-FTIR

10.21203/rs.3.rs-32047/v1 ◽

2020 ◽

Author(s):

Hongbin Lu ◽

qiang shi ◽

Can Chen ◽

Muzhi Li ◽

Yang Chen ◽

...

Keyword(s):

Extracellular Matrix ◽

Rotator Cuff ◽

Load Transfer ◽

Mechanical Test ◽

Three Dimensional ◽

Decellularized Extracellular Matrix ◽

Quantitative Mapping ◽

Extracellular Matrix Molecules ◽

Histological Morphology

Abstract Background: Bone-tendon interface (enthesis) plays a pivotal role in relaxing load transfer between otherwise structurally and functionally distinct tissue types. Currently, decellularized extracellular matrix (DEM) from enthesis provide a natural three-dimensional scaffold with tissue-specific orientations of extracellular matrix molecules for enthesis regeneration, however, the content and distribution of collagen and proteoglycan in the decellularized book-shaped enthesis scaffolds from rabbit rotator cuff by SR-FTIR have not been reported.Methods: Native enthesis tissues (NET) harvested from rabbit rotator cuff were sectioned into cuboid (about 30 mm × 1.2 mm × 10 mm) for decalcified. The decellularized book-shaped enthesis scaffolds were conducted and intrinsic ultrastructure was evaluated by histological staining and scanning electron microscopy (SEM), respectively. The content and distribution of collagen and proteoglycan in the decellularized book-shaped enthesis scaffolds from rabbit rotator cuff were also measured innovatively by SR-FTIR.Results: The decellularized book-shaped enthesis scaffolds from rabbit rotator cuff were successfully obtained. Histomorphology and SEM evaluated the decellularized effect and the structure of extracellular matrix during decellularization. After mechanical test, we found the failure load in the NET group was higher than that in the DEM group (P < 0.05), reached 1.32 times as much as that in the DEM group. Meanwhile, the stiffness of the DEM group was significantly lower than the NET group. Furthermore, the distributions of collagen and PGs content in the decellularized book-shaped enthesis scaffolds were decreased obviously after decellularization by SR-FTIR quantitative analysis.Conclusion: SR-FTIR was applied innovatively to characterize the histological morphology of native enthesis tissues from rabbit rotator cuff. Moreover, it can be used for quantitative mapping of the content and distribution of collagen and PGs content in the decellularized book-shaped enthesis scaffolds.

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