Abstract
Healthy articular cartilage is thought to be maintained by the modulation of Cbfa1 expression, although little is currently known about Cbfa1 expression in such tissues. Therefore, we examined in vivo Cbfa1 transcript levels in the temporomandibular (TM) and knee joints of 3- and 10-week-old male ICR mice (weighing 50-70 g). A digoxigenin-11-UTP-labeled single-stranded RNA probe (0.6 kbp PstI-HindIII fragment of the 3′ of untranslated region in exon 8 of mouse Cbfa1 cDNA) was prepared and in situ hybridization was performed on paraffin-embedded TM and knee joint sections. The antisense probe detected Cbfa1 transcripts in prehypertrophic chondrocytes, but not in the articular surface layer chondrocytes of 3- and 10-week-old mice TMJs. Despite the intense Cbfa1 expression in prehypertrophic chondrocytes, articular surface layer chondrocytes of the knee joints expressed low and undetectable level of Cbfa1 in the 3- and 10-week-old mice, respectively. These results indicate that Cbfa1 are highly expressed in the prehypertrophic chondrocytes presumably for articular tissue remodeling during the entire lifespan of the mouse, whereas Cbfa1 expression is suppressed in the articular surface chondrocytes in the adult mouse TM and knee joints to obtain the permanent cartilage phenotype.
| Original language | English |
|---|---|
| Pages (from-to) | 519-525 |
| Number of pages | 7 |
| Journal | Archives of Oral Biology |
| Volume | 48 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - Jul 1 2003 |
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Keywords
- Articular cartilage
- Calcification
- Cbfa1/Runx2
- Knee joint
- Temporomandibular joint
ASJC Scopus subject areas
- Dentistry(all)
Cite this
Cbfa1/Runx2 gene expression in articular chondrocytes of the mice temporomandibular and knee joints in vivo. / Kuboki, Takuo; Kanyama, Manabu; Nakanishi, Tohru; Akiyama, Kentaro; Nawachi, Kumiko; Yatani, Hirofumi; Yamashita, Kazuo; Takano-Yamamoto, Teruko; Takigawa, Masaharu.
In: Archives of Oral Biology, Vol. 48, No. 7, 01.07.2003, p. 519-525.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Cbfa1/Runx2 gene expression in articular chondrocytes of the mice temporomandibular and knee joints in vivo
AU - Kuboki, Takuo
AU - Kanyama, Manabu
AU - Nakanishi, Tohru
AU - Akiyama, Kentaro
AU - Nawachi, Kumiko
AU - Yatani, Hirofumi
AU - Yamashita, Kazuo
AU - Takano-Yamamoto, Teruko
AU - Takigawa, Masaharu
PY - 2003/7/1
Y1 - 2003/7/1
N2 - Healthy articular cartilage is thought to be maintained by the modulation of Cbfa1 expression, although little is currently known about Cbfa1 expression in such tissues. Therefore, we examined in vivo Cbfa1 transcript levels in the temporomandibular (TM) and knee joints of 3- and 10-week-old male ICR mice (weighing 50-70 g). A digoxigenin-11-UTP-labeled single-stranded RNA probe (0.6 kbp PstI-HindIII fragment of the 3′ of untranslated region in exon 8 of mouse Cbfa1 cDNA) was prepared and in situ hybridization was performed on paraffin-embedded TM and knee joint sections. The antisense probe detected Cbfa1 transcripts in prehypertrophic chondrocytes, but not in the articular surface layer chondrocytes of 3- and 10-week-old mice TMJs. Despite the intense Cbfa1 expression in prehypertrophic chondrocytes, articular surface layer chondrocytes of the knee joints expressed low and undetectable level of Cbfa1 in the 3- and 10-week-old mice, respectively. These results indicate that Cbfa1 are highly expressed in the prehypertrophic chondrocytes presumably for articular tissue remodeling during the entire lifespan of the mouse, whereas Cbfa1 expression is suppressed in the articular surface chondrocytes in the adult mouse TM and knee joints to obtain the permanent cartilage phenotype.
AB - Healthy articular cartilage is thought to be maintained by the modulation of Cbfa1 expression, although little is currently known about Cbfa1 expression in such tissues. Therefore, we examined in vivo Cbfa1 transcript levels in the temporomandibular (TM) and knee joints of 3- and 10-week-old male ICR mice (weighing 50-70 g). A digoxigenin-11-UTP-labeled single-stranded RNA probe (0.6 kbp PstI-HindIII fragment of the 3′ of untranslated region in exon 8 of mouse Cbfa1 cDNA) was prepared and in situ hybridization was performed on paraffin-embedded TM and knee joint sections. The antisense probe detected Cbfa1 transcripts in prehypertrophic chondrocytes, but not in the articular surface layer chondrocytes of 3- and 10-week-old mice TMJs. Despite the intense Cbfa1 expression in prehypertrophic chondrocytes, articular surface layer chondrocytes of the knee joints expressed low and undetectable level of Cbfa1 in the 3- and 10-week-old mice, respectively. These results indicate that Cbfa1 are highly expressed in the prehypertrophic chondrocytes presumably for articular tissue remodeling during the entire lifespan of the mouse, whereas Cbfa1 expression is suppressed in the articular surface chondrocytes in the adult mouse TM and knee joints to obtain the permanent cartilage phenotype.
KW - Articular cartilage
KW - Calcification
KW - Cbfa1/Runx2
KW - Knee joint
KW - Temporomandibular joint
UR - http://www.scopus.com/inward/record.url?scp=0038377489&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0038377489&partnerID=8YFLogxK
U2 - 10.1016/S0003-9969(03)00088-8
DO - 10.1016/S0003-9969(03)00088-8
M3 - Article
C2 - 12798155
AN - SCOPUS:0038377489
VL - 48
SP - 519
EP - 525
JO - Archives of Oral Biology
JF - Archives of Oral Biology
SN - 0003-9969
IS - 7
ER -