| Project/Area Number |
10670675
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Circulatory organs internal medicine
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| Research Institution | Jichi Medical School |
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Principal Investigator |
IKEDA Uichi DEPARTMENT OF CARDIOLOGY, Jichi Medical School, 医学部, 助教授 (30221063)
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| Project Period (FY) |
1999 – 2000
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| Project Status |
Completed (Fiscal Year 1999)
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| Budget Amount *help |
¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 1999: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 1998: ¥1,700,000 (Direct Cost: ¥1,700,000)
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| Keywords | nitric oxide / adeno-associated virus / pulmonary hypertension / cardiac hypertrophy / gene therapy / アデノウイルス |
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| Research Abstract |
We tried to use adeno-associated virus (AAV) vectors for gene therapy of various cardiovascular diseases such as pulmonary hypertension and cardiac hypertrophy. With a Grant-in-Aid for Scientific Research c, we revealed following new findings.
(I) Transfer of AA V vectors into cardiovascular cells We first prepared AAV-LacZ . This AAV-LacZ could be transduced into rat vascular smooth muscles and cardiac myocytes with high efficiency. Furthermore, the expression of transduced LacZ gene persisted more than 2 weeks.
(ii) ecNOS gene transfer into 293 cells We transduced endothelial nitric oxide synthase (ecNOS) gene into human embryonic kidney cell line 293 cells. The ecNOS protein expression was observed in the transfected cells, and ecNOS gene transfer markedly inhibited endothelin-1-induced proliferation of 293 cells.
(iii) ecNOS gene transfer into cardiac myocytes We transduced AAV-ecNOS into rat cardiac myocytes. The ecNOS gene transfer significantly inhibited phenylephrine-induced protein synthesis of cardiac myocytes, which was recovered in the presence of the NOS inhibitor L-NMMA.
Above findings suggest that ecNOS gene transfer using AAV vectors is useful for treatment of pulmonary hypertension and cardiac hypertrophy.
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