Regulation of MMP/TIMP by HUVEC transplantation attenuates ventricular remodeling in response to myocardial infarction

• Published in: Life sciences (1973) Vol. 101; no. 1-2; pp. 15 - 26
• Main Authors: Kwon, Jin-Sook, Kim, Yong Sook, Cho, Ae Shin, Cho, Hyang Hee, Kim, Jeong Sook, Hong, Moon Hwa, Jeong, Hye-yun, Kang, Wan Seok, Hwang, Kyung-Kuk, Bae, Jang-Whan, Jeong, Myung Ho, Cho, Myeong-Chan, Ahn, Youngkeun
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier Inc 17-04-2014
• Subjects: Animals; Enzyme Inhibitors - pharmacology; Female; Gene Expression - drug effects; Human umbilical vein endothelial cell; Human Umbilical Vein Endothelial Cells - transplantation; Humans; Male; Matrix metalloproteinase; Matrix Metalloproteinase 2 - metabolism; Matrix Metalloproteinase 9 - metabolism; Mice; Myocardial infarction; Myocardial Infarction - metabolism; Myocardial Infarction - therapy; Myocardium - metabolism; NG-Nitroarginine Methyl Ester - pharmacology; Nitric Oxide Synthase - antagonists & inhibitors; Rats; Remodeling; Tissue Inhibitor of Metalloproteinase-1 - metabolism; Tissue Inhibitor of Metalloproteinase-3 - metabolism; Ventricular Remodeling; Myocardial infarction; Human umbilical vein endothelial cell; Matrix metalloproteinase; Remodeling
• ISSN: 0024-3205; 1879-0631
• DOI: 10.1016/j.lfs.2014.02.009

We elucidated the therapeutic potential of human umbilical vein endothelial cells (HUVECs) for ameliorating progressive heart failure in a myocardial infarction (MI) rat model.
MI was induced by ligation of left anterior descending artery, and HUVEC was transplanted 1week after MI. Cardiac function was evaluated by echocardiography, and histological analyses were performed.
Phosphate-buffered saline (MI-V, n=5) or HUVEC (MI-HV, n=5) were injected into the border zone and infarcted area 7days after ligation of the left coronary artery in rats. The MI-HV group showed attenuation of left ventricular (LV) remodeling compared with the MI-V group. In the infarcted myocardium, a few of injected HUVEC was retained up to 28days. The ratios of matrix metalloproteinase (MMP)-2 or MMP-9 to tissue inhibitor of metalloproteinase (TIMP)-1 or TIMP-3 were decreased in the MI-HV group compared with the MI-V group. In vivo zymography analysis showed that HUVEC transplantation decreased the activities of MMP-2 and MMP-9. In immunohistochemistry, decreased MMP-2 and increased TIMP-1 and TIMP-3 expression were observed at 48h after HUVEC transplantation. These effects on MMP/TIMP balance were inhibited by L-NAME administration (an eNOS inhibitor, 10mg/kg). NOS inhibition decreased the protein expressions of TIMP-1 and TIMP-3 but did not change the protein expressions of MMP-2 and MMP-9.
Our data suggest that altered balance between MMP and TIMP by HUVEC transplantation contributed to attenuation of ventricular remodeling after MI via eNOS.