Abstract:
:Bone sialoprotein (BSP) expression is restricted to cells associated with the mineralization of bones and teeth. We previously identified a homeodomain binding element in a 2.5 kb fragment of the murine Bsp promoter that is required for osteoblast-selective expression in cell culture. To examine the role of this element (called OSHE1; osteoblast-specific homeodomain element 1) in the tissue-specific expression of Bsp in vivo, we generated transgenic mice using the wild-type 2472 bp promoter or the same promoter containing a 2 bp mutation in OSHE1. Promoter constructs driving both luciferase and lacZ reporter genes were microinjected into fertilized eggs from (C57BL/6 X SJL)F1 mice. Four lines containing the wild-type promoter and 5 lines containing the mutated promoter were established, and the tissue specificity of beta-galactosidase staining and luciferase expression was examined. Beta-gal staining was observed in osteoblasts of calvaria and trabecular regions of tibia and femur in 12-day-old mice while chondrocytes, kidney, heart, muscle, spleen, liver, skin, stomach, and lung were negative. Whole tissue luciferase activity was also much higher in mineralized tissues although some soft tissue expression was detected. In contrast, analysis of OSHE1 mutant lines revealed expression of luciferase and beta-gal in kidney, skin, liver, and lung. Beta-gal expression in these tissues was restricted to specific cell populations. Trabecular regions were devoid of beta-gal staining in the tibia and femur of the mutant mice, while staining was seen in the chondrocytes. We therefore hypothesize that the OSHE1 site is involved in both the expression of Bsp in mineralizing tissues and the suppression of transcription in nonmineralizing tissues.
journal_name
Connect Tissue Resjournal_title
Connective tissue researchauthors
Gopalakrishnan R,Thomas PE,Benson MD,Wang D,Franceschi RTkeywords:
subject
Has Abstractpub_date
2003-01-01 00:00:00pages
154-60eissn
0300-8207issn
1607-8438journal_volume
44 Suppl 1pub_type
杂志文章abstract::Currently, the mechanism governing the regeneration of the soft tissue-to-bone interface, such as the transition between the anterior cruciate ligament (ACL) and bone, is not known. Focusing on the ACL-to-bone insertion, this study tests the novel hypothesis that interactions between cells from the ligament (fibroblas...
journal_title:Connective tissue research
pub_type: 杂志文章
doi:10.1080/03008207.2016.1230106
更新日期:2016-11-01 00:00:00
abstract::The present study details structural aspects of the cells of the rat intra-articular disc (IAD) of the temporomandibular joint. At the light and electron microscope level, the outline of the cells varied, although a number appeared oval/rounded. Ultrastructurally, the cells contained moderate amounts of the intracellu...
journal_title:Connective tissue research
pub_type: 杂志文章
doi:
更新日期:2003-01-01 00:00:00
abstract:BACKGROUND:The presence of genetic variants in uric acid (UA) transporters can be associated with hyperuricemia, and therefore with an increased risk of monosodium urate (MSU) crystal precipitation. The inflammatory process triggered by these crystals leads to cartilage damage, which, in turn, could promote knee osteoa...
journal_title:Connective tissue research
pub_type: 杂志文章
doi:10.1080/03008207.2018.1483359
更新日期:2019-05-01 00:00:00
abstract::Osteoarthritis (OA) is typically managed in late stages by replacement of the articular cartilage surface with a prosthesis as an effective, though undesirable outcome. As an alternative, hydrogel implants or growth factor treatments are currently of great interest in the tissue engineering community, and scaffold mat...
journal_title:Connective tissue research
pub_type: 杂志文章
doi:10.1080/03008207.2019.1698556
更新日期:2020-05-01 00:00:00
abstract::To study the glycoproteins and transglutaminase substrates involved in healing, wounds were made in the skin of anesthetized rats with a biopsy punch. Explants made 1-5 days later were incubated with [3H]-labelled putrescine, fucose or proline. As compared with unwounded skin there was an increased incorporation of la...
journal_title:Connective tissue research
pub_type: 杂志文章
doi:10.3109/03008208709001994
更新日期:1987-01-01 00:00:00
abstract::X-Ray diffraction and scanning electron microscopy show that collagen fibrils tend to be oriented parallel to the surface of the vertebral end plates in pig, rat and man. It is suggested that this orientation allows the end plate to withstand the pressure exerted on it by the nucleus pulposus. Scanning electron micros...
journal_title:Connective tissue research
pub_type: 杂志文章
doi:10.3109/03008208109160244
更新日期:1981-01-01 00:00:00
abstract:AIM OF THE STUDY:To further elucidate the pathogenesis of systemic sclerosis (SSc) an experimental avian model was used. The University of California at Davis line 200 (UCD-200) chickens spontaneously develop a SSc-like disease that has most features of human SSc with vascular effects, inflammation, autoimmunity, and f...
journal_title:Connective tissue research
pub_type: 杂志文章
doi:10.1080/03008207.2016.1182997
更新日期:2016-09-01 00:00:00
abstract::Bone sialoprotein (BSP) and osteopontin (OPN) are two extracellular bone matrix proteins that have the ability to modulate the growth of hydroxyapatite in vitro. Studies of BSP/OPN hydroxyapatite interactions in the past have been directed toward the identification of essential structural elements that allow these two...
journal_title:Connective tissue research
pub_type: 杂志文章
doi:10.3109/03008209609029217
更新日期:1996-01-01 00:00:00
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journal_title:Connective tissue research
pub_type: 杂志文章
doi:10.1080/03008207.2017.1394295
更新日期:2018-01-01 00:00:00
abstract::Although bone is a nanocomposite of mineral and collagen, mineral has been the more elusive component of study. A standard for bone mineral is clearly needed. We hypothesized that the most natural, least-processed bone mineral could be retrieved from the most highly mineralized bone. We therefore studied the rostrum o...
journal_title:Connective tissue research
pub_type: 杂志文章
doi:10.3109/03008207.2013.769973
更新日期:2013-01-01 00:00:00
abstract:: Purpose/Aim of the study mice are the most often used pre-clinical lab models for studying the pathologies of bone mineralization. However, recent evidence suggests that two of the most often used mice strains (C57BL/6J and CD-1) might show differences in the bone minerali...
journal_title:Connective tissue research
pub_type: 杂志文章
doi:10.1080/03008207.2019.1601184
更新日期:2020-09-01 00:00:00
abstract::Sonic hedgehog (Shh) expression is highly localized to the epithelium at the future sites of tooth development. This restricted expression suggests that inhibition of Shh in areas where teeth do not form may be an important mechanism in tooth germ localization. Recently, Hip, a putative vertebrate antagonist of Shh, h...
journal_title:Connective tissue research
pub_type: 杂志文章
doi:10.1080/03008200290000907
更新日期:2002-01-01 00:00:00
abstract::The protein components of biomineralized structures (matrix proteins) are believed to modulate crystal nucleation and growth, and thereby influence the shape and strength of the final structure. The chicken eggshell contains a complex array of distinct matrix proteins. One of these was found to have similar molecular ...
journal_title:Connective tissue research
pub_type: 杂志文章
doi:10.3109/03008209509010814
更新日期:1995-01-01 00:00:00
abstract::??Although injuries to the medial collateral ligament (MCL) can heal functionally without surgical intervention, the collagen fibers in the healing tissue remain compromised. The molecular basis for this poor healing potential was investigated by examining extracellular matrix-modifying molecules such as bone morphoge...
journal_title:Connective tissue research
pub_type: 杂志文章
doi:10.3109/03008207.2010.524719
更新日期:2011-01-01 00:00:00
abstract:AIM:miR-155 is a pro-inflammatory or anti-inflammatory factor depending on the cell type in which it is expressed. miR-155 controls apoptosis and matrix degradation in nucleus pulposus (NP) cells in vitro. The aim of this study is to explore the effect of miR-155 in vivo and further investigate the mechanism of miR-155...
journal_title:Connective tissue research
pub_type: 杂志文章
doi:10.1080/03008207.2018.1483356
更新日期:2019-03-01 00:00:00
abstract:AIM OF THE STUDY:Tendons are exposed to mechanical stress constantly during movements and thus they are frequently subjected to injuries. Rotator cuff tears are common musculoskeletal disorders, mainly involving the supraspinatus tendon. The characterization of the tenocytes derived from this tendon and the comparison ...
journal_title:Connective tissue research
pub_type: 杂志文章
doi:10.1080/03008207.2020.1816993
更新日期:2020-09-14 00:00:00
abstract:PURPOSE:Our previous study showed that partial-thickness articular cartilage defects (PTCDs) created in immature rats spontaneously healed to resemble normal hyaline cartilage, but that of mature rats did not. To identify molecules involved in the spontaneous cartilage repair observed in this model, gene expression was...
journal_title:Connective tissue research
pub_type: 杂志文章
doi:10.3109/03008207.2015.1121250
更新日期:2016-05-01 00:00:00
abstract::This study aims to elucidate the feasible geometry of the scaffolds in bone and periodontal tissue engineering. Several biomaterials with different geometries are compared in terms of their patterns of ectopic BMP-induced chondrogenesis and osteogenesis. The materials include a honeycomb-shaped hydroxyapatite (HCHAP) ...
journal_title:Connective tissue research
pub_type: 杂志文章
doi:10.1080/03008200290001104
更新日期:2002-01-01 00:00:00
abstract::Hyperhomocysteinemia causes connective tissue pathology. Several theories on the mechanism of homocysteine toxicity in connective tissue are reviewed briefly. A possible new mechanism was revealed recently in the discovery of a reaction in which homocysteine thiolactone is converted to mercaptopropionaldehyde. The rea...
journal_title:Connective tissue research
pub_type: 杂志文章,评审
doi:10.1080/03008200801913742
更新日期:2008-01-01 00:00:00
abstract::Studies were designed to test the hypothesis that plasma- and serum-deprived embryonic cells and tissues in vitro are capable of producing growth regulating factors which augment cartilage, bone and tooth induction during mouse mandibular process development. Embryonic mouse first branchial arch-derived mandibular pro...
journal_title:Connective tissue research
pub_type: 杂志文章,评审
doi:10.3109/03008209009152421
更新日期:1990-01-01 00:00:00
abstract::Parietal yolk sacs isolated from 14.5-day rat embryos and incubated in vitro with either [14C]proline, [3H]mannose or 3H-labeled amino acid mixture synthesized and secreted basement membrane collagenous and noncollagenous glycoprotein components with relative molecular weights of 350,000 (350K), 220,000 (220K), 185,00...
journal_title:Connective tissue research
pub_type: 杂志文章
doi:10.3109/03008208209008056
更新日期:1982-01-01 00:00:00
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journal_title:Connective tissue research
pub_type: 杂志文章
doi:10.1080/03008200390229912
更新日期:2003-01-01 00:00:00
abstract::The total and individual glycosaminoglycan (GAG) content at various stages of the Dupuytren disease process and in samples of normal palmar connective tissue (palmar dermis, palmar fascia and digital flexor tendon) from the hands of uninvolved age-matched controls have been assayed and compared. Morphological comparis...
journal_title:Connective tissue research
pub_type: 杂志文章
doi:10.3109/03008208209160258
更新日期:1982-01-01 00:00:00
abstract::Gene expression of osteopontin (OPN) has been investigated in mice by application of laser capture microdissection (LCM) and reverse transcriptase-polymerase chain reaction (RT-PCR) analysis. LCM permits individual cells to be isolated ("captured") from tissue sections for molecular analyses. In this study, chondrocyt...
journal_title:Connective tissue research
pub_type: 杂志文章
doi:
更新日期:2003-01-01 00:00:00
abstract::A high frequency restriction fragment length polymorphism (RFLP) at the 3'-end of the pigeon pro alpha 2(1) collagen gene was detected using the restriction endonuclease EcoR1. The distribution of this allelic variant was analyzed in DNA isolated from White Carneau pigeons genetically susceptible to the development of...
journal_title:Connective tissue research
pub_type: 杂志文章
doi:10.3109/03008209109152437
更新日期:1991-01-01 00:00:00
abstract::Aseptic loosening remains the primary cause of failure in total joint arthroplasty. Implant-derived particles are thought to be a main cause of osteolysis that leads to the failure. Substance P (SP) immunoreactive nerve fibers have been detected in the periprosthetic membrane of aseptic loose hip prostheses. We isolat...
journal_title:Connective tissue research
pub_type: 杂志文章
doi:10.3109/03008207.2013.823953
更新日期:2013-01-01 00:00:00
abstract::Purpose: Complications including arthrofibrosis have been reported after anterior cruciate ligament reconstruction (ACLR) even under accelerated rehabilitation. To overcome this, we developed an animal model of ACLR-induced arthrofibrosis without immobilization.Materials and Methods: Thirteen male Wistar rats were div...
journal_title:Connective tissue research
pub_type: 杂志文章
doi:10.1080/03008207.2019.1693548
更新日期:2019-11-26 00:00:00
abstract::The meniscal cartilages in the knee function to improve congruity of the medial and lateral femoro-tibial joints and play critical roles in load distribution and joint stability. Meniscal tears of various configurations are one of the most common conditions of the knee and are associated with an increased risk of deve...
journal_title:Connective tissue research
pub_type: 杂志文章,评审
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更新日期:2017-01-01 00:00:00
abstract::Since cartilage is mainly an avascular tissue, chondrocytes exist in a low-level oxygen environment in vivo. In the present study, we investigated the effect of oxygen tension (20%, 5% and 1% gas phase oxygen concentrations) over a 20-day period on the extracellular matrix accumulation of bovine articular chondrocytes...
journal_title:Connective tissue research
pub_type: 杂志文章
doi:10.3109/03008200109014251
更新日期:2001-10-01 00:00:00
abstract::The interaction of sodium dodecyl sulfate with elastin has been studied by complexometric titration. Approximately 1.2 mumoles of protons with a pKapp of 5.45 are taken up by 10 milligrams of insoluble elastin upon the binding of detergent, apparently due to the protonation of normally ionized carboxylate functions in...
journal_title:Connective tissue research
pub_type: 杂志文章
doi:10.3109/03008207809152627
更新日期:1978-01-01 00:00:00