[To transdifferentiate human hypertrophic scar fibroblasts induced by connective tissue growth factor mediated transforming growth factor-beta 1 in vitro]

Zhe Li, Shi-rong Li, Jian-yi Liu, Xia Dai, Ling Tao
Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns 2009, 25 (1): 49-52

OBJECTIVE: To investigate the role of connective tissue growth factor (CTGF) induced TGF-beta 1 in the transdifferentiation of human hypertrophic scar fibroblast (HSFb).

METHODS: Human hypertrophic scar fibroblasts were cultured in vitro, 5 cell samples were stimulated with TGF-beta 1 (0, 2.5, 5.0, 7.5, 10.0 ng/mL, respectively) for 48 hours; other cell samples were divided into: normal control (NC) group, CTGF group (with addition of 10 ng/mL rhCTGF into culture medium), TGF-beta 1 group (with addition of 10 ng/mL TGF-beta 1 into culture medium), CTGF ASODN group (with addition of 10% FBS-DMEM after transfection of CTGF ASODN), CTGF ASODN + TGF-beta 1group (with addition of 10 ng/mL TGF-beta 1 after transfection of CTGF ASODN). Expression of CTGF was determined by Western blotting with stimulation of different concentration of TGF-beta 1. Expression of alpha-smooth muscle actin (alpha-SMA) was measured by Western blotting. Positive cell rate of alpha-SMA was examined by flow cytometry.

RESULTS: With stimulation of 10.0 ng/mL TGF-beta 1, the expression of CTGF was obviously higher than that of non-stimulation (P < 0.05). Expression of alpha-SMA in the CTGF group and the TGF-beta 1 group was obviously higher than that in NC group (P < 0.01), while there was no obvious difference among NC, CTGF ASODN, CTGF ASODN + TGF-beta 1 groups (P > 0.05). The positive cell rate of alpha-SMA in NC, CTGF, TGF-beta 1, CTGF ASODN, CTGF ASODN + TGF-beta 1 groups was (10.8 +/- 2.8)%, (29.1 +/- 4.0)%, (28.7 +/- 4.8)%, (10.7 +/- 2.3)%, (14.3 +/- 2.9)%, respectively, which was similar to expression of alpha-SMA on statistic analysis.

CONCLUSIONS: CTGF is one of the most important downstream efforts for TGF-beta 1 in inducing the transdifferentiation of HSFb.

Full Text Links

Find Full Text Links for this Article


You are not logged in. Sign Up or Log In to join the discussion.

Related Papers

Remove bar
Read by QxMD icon Read

Save your favorite articles in one place with a free QxMD account.


Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"