Table 1.
Species | Experimental source | Methods | Expression domains | References |
---|---|---|---|---|
Human | Musculoskeletal tissues | Real-time PCR | Tendon, fat, muscle in | Jelinsky et al., 2010 |
CTC from patients | IHC | Elastin-rich mid layer of CTC | Kimura et al., 2008 | |
Adipose tissue | DNA-MA, Real-time PCR | Lean and obese adipose subcutaneous tissue, more specifically mammary glands, omental fat, tongue superior part and main corpus, but also urethra, coronary artery, oral mucosa, ovary, skeletal muscle, bone marrow, colon, substantia nigra and pituitary gland | Saiki et al., 2009 | |
Cultured cells | ICC | Bone marrow-derived MSCs expressing Scx | Alberton et al., 2012 | |
PCR | TSPCs | Bi et al., 2007 | ||
Porcine | Pig heart and eyes | RT-PCR, WB | Chordae and eye | Kimura et al., 2008 |
Rabbit | 1-week-old Japanese white rabbits | ISH | Achilles tendon | Yukata et al., 2010 |
12-week-old Japanese white rabbits | PCR | CTC interstitial cells | Kimura et al., 2008 | |
Rat | Rotator cuff healing model in 19-21-week-old rats | Real-time PCR ISH |
Healing tissues at 2-, 4-, 6-, 8-, 12-weeks, but significantly upregulated in animals treated with FGF-2 at weeks 4, 6, 8 and 12 compared to normally healing tendons Midsubstance of tendon at 2- and 8-weeks |
Tokunaga et al., 2015 |
Achilles tendon healing model with 9-10-week-old rats | RT-PCR | Upregulation in the normally loaded Achilles tendon compared to the animal where normal loading of the muscle-tendon unit was prevented by intramuscular Botox injection | Eliasson et al., 2009 | |
Mouse | Embryos | NB | Whole embryos at E15.5 and E17.5 | Oshima et al., 2003 |
High expression in skeletal muscle, diaphragm and eye, weak signals in brain, lung, liver, heart, kidney, skin, thymus and perichondrium- and periosteum-free rib cartilage | Brandau et al., 2001 | |||
IHC | Secondary lens fibres and retina at E16.5 | Oshima et al., 2003 | ||
ISH | Tendon of extrinsic ocular muscle, sclera, equatorial lens, epithelial cells at E16.5 Tendons at E14.5, E15.5, and E16.5 | Oshima et al., 2003 | ||
CD31- negative regions of tendons at E16.5. Strong signals in limb tendons and cruciate ligaments, tendons of the masculus flexor digitorum, ligament intercostal, diaphragm, cortex, medulla of the thymus at E17.5 | Shukunami et al., 2008 | |||
PCR | Heart from E14.5 to E18.5 | Kimura et al., 2008 | ||
New-born | IHC | Patellar ligament, anterior and posterior cruciate ligament, Achilles tendon of Sox9Cre/+;R26R | Sugimoto et al., 2013 | |
RT-PCR | Heart | Kimura et al., 2008 | ||
2- and 3-week-old mice | IHC | Peridontal ligaments | Komiyama et al, 2013 | |
4-week-old mice | NB/WB | Whole eye, skin | Oshima et al., 2003 | |
PCR | Whole eye, cornea, retina, sclera with ocular muscles | |||
ISH | Cornea, sclera, retina | |||
Tendon, epimysium of skeletal muscle | Shukunami et al., 2001 | |||
WB | Skeletal muscle | Oshima et al., 2004 | ||
IHC | Achilles tendon | Docheva et al., 2005 | ||
NB | High in tendon, low in eye and muscle | |||
Cultured cells | PCR/IHC | TSPC | Bi et al., 2007; Alberton et al., 2015 | |
Chick | Embryos (from HH stage 23-41) | ISH | Tendon primordia and tendons | Shukunami et al., 2006 |
Tendon primordia and tendons, ligaments and perichondrium | Shukunami et al., 2008 | |||
Hind limb tendons at HH stage 30 | Takimoto et al, 2012 | |||
NB | Whole embryos from HH stage 25 to stage 35, tendon, skeletal muscle, heart, skin and eye at HH stage 45 | |||
Cultured cells | NB | Tenocytes isolated from leg tendons at HH stage 41 | Takimoto et al, 2012 |
Abbreviations: CTC, chordae tendineae cordis; DNA, deoxyribonucleic acid; E, embryonic day; HC, immunohistochemistry; HH, Hamburger Hamilton; ICC, immunocytochemistry; ISH, in situ hybridization; MA, microarray; MSC, mesenchymal stem cell; NB, Northern blot; PCR, polymerase chain reaction; RT, reverse transcriptase; Scx, scleraxis; TSPC, tendon stem/progenitor cell; WB, western blot.