|
|
char = R;code = 82
char = e;code = 101
char = s;code = 115
char = v;code = 118
char = e;code = 101
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = r;code = 114
char = o;code = 111
char = l;code = 108
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = u;code = 117
char = s;code = 115
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = C;code = 67
char = O;code = 79
char = X;code = 88
char = -;code = 45
char = 2;code = 50
char = -;code = 45
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = p;code = 112
char = 5;code = 53
char = 3;code = 51
char = -;code = 45
char = d;code = 100
char = e;code = 101
char = p;code = 112
char = e;code = 101
char = n;code = 110
char = d;code = 100
char = e;code = 101
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char = t;code = 116
char = ;code = 32
char = a;code = 97
char = p;code = 112
char = o;code = 111
char = p;code = 112
char = t;code = 116
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = h;code = 104
char = e;code = 101
char = a;code = 97
char = d;code = 100
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char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = n;code = 110
char = e;code = 101
char = c;code = 99
char = k;code = 107
char = ;code = 32
char = s;code = 115
char = q;code = 113
char = u;code = 117
char = a;code = 97
char = m;code = 109
char = o;code = 111
char = u;code = 117
char = s;code = 115
char = ;code = 32
char = c;code = 99
char = e;code = 101
char = l;code = 108
char = l;code = 108
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = c;code = 99
char = e;code = 101
char = l;code = 108
char = l;code = 108
char = s;code = 115
char = .;code = 46
result sql = Resveratrol causes COX-2- and p53-dependent apoptosis in head and neck squamous cell cancer cells.
Resveratrol causes COX-2- and p53-dependent apoptosis in head and neck squamous cell cancer cells.char = C;code = 67
char = y;code = 121
char = c;code = 99
char = l;code = 108
char = o;code = 111
char = o;code = 111
char = x;code = 120
char = y;code = 121
char = g;code = 103
char = e;code = 101
char = n;code = 110
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = -;code = 45
char = 2;code = 50
char = ;code = 32
char = (;code = 40
char = C;code = 67
char = O;code = 79
char = X;code = 88
char = -;code = 45
char = 2;code = 50
char = );code = 41
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = t;code = 116
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = c;code = 99
char = r;code = 114
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char = a;code = 97
char = s;code = 115
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = m;code = 109
char = a;code = 97
char = n;code = 110
char = y;code = 121
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char = t;code = 116
char = y;code = 121
char = p;code = 112
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char = o;code = 111
char = f;code = 102
char = ;code = 32
char = t;code = 116
char = u;code = 117
char = m;code = 109
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char = c;code = 99
char = e;code = 101
char = l;code = 108
char = l;code = 108
char = s;code = 115
char = .;code = 46
char = ;code = 32
char = W;code = 87
char = e;code = 101
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char = h;code = 104
char = a;code = 97
char = v;code = 118
char = e;code = 101
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char = i;code = 105
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char = t;code = 116
char = i;code = 105
char = g;code = 103
char = a;code = 97
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char = e;code = 101
char = d;code = 100
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char = h;code = 104
char = e;code = 101
char = ;code = 32
char = m;code = 109
char = e;code = 101
char = c;code = 99
char = h;code = 104
char = a;code = 97
char = n;code = 110
char = i;code = 105
char = s;code = 115
char = m;code = 109
char = ;code = 32
char = b;code = 98
char = y;code = 121
char = ;code = 32
char = w;code = 119
char = h;code = 104
char = i;code = 105
char = c;code = 99
char = h;code = 104
char = ;code = 32
char = r;code = 114
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char = s;code = 115
char = v;code = 118
char = e;code = 101
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = r;code = 114
char = o;code = 111
char = l;code = 108
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = s;code = 115
char = t;code = 116
char = i;code = 105
char = l;code = 108
char = b;code = 98
char = e;code = 101
char = n;code = 110
char = e;code = 101
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = a;code = 97
char = t;code = 116
char = ;code = 32
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = -;code = 45
char = a;code = 97
char = p;code = 112
char = o;code = 111
char = p;code = 112
char = t;code = 116
char = o;code = 111
char = t;code = 116
char = i;code = 105
char = c;code = 99
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char = i;code = 105
char = n;code = 110
char = ;code = 32
char = m;code = 109
char = a;code = 97
char = n;code = 110
char = y;code = 121
char = ;code = 32
char = t;code = 116
char = u;code = 117
char = m;code = 109
char = o;code = 111
char = r;code = 114
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char = c;code = 99
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char = l;code = 108
char = l;code = 108
char = ;code = 32
char = l;code = 108
char = i;code = 105
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char = ,;code = 44
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = u;code = 117
char = s;code = 115
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = p;code = 112
char = o;code = 111
char = p;code = 112
char = t;code = 116
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = h;code = 104
char = u;code = 117
char = m;code = 109
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = h;code = 104
char = e;code = 101
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char = a;code = 97
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char = d;code = 100
char = ;code = 32
char = n;code = 110
char = e;code = 101
char = c;code = 99
char = k;code = 107
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char = s;code = 115
char = q;code = 113
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char = a;code = 97
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char = o;code = 111
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char = l;code = 108
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char = U;code = 85
char = M;code = 77
char = S;code = 83
char = C;code = 67
char = C;code = 67
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char = 2;code = 50
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char = B;code = 66
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char = m;code = 109
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char = i;code = 105
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char = a;code = 97
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char = C;code = 67
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char = ;code = 32
char = U;code = 85
char = M;code = 77
char = S;code = 83
char = C;code = 67
char = C;code = 67
char = -;code = 45
char = 2;code = 50
char = 2;code = 50
char = B;code = 66
char = ;code = 32
char = c;code = 99
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char = l;code = 108
char = l;code = 108
char = s;code = 115
char = ;code = 32
char = t;code = 116
char = r;code = 114
char = e;code = 101
char = a;code = 97
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char = e;code = 101
char = d;code = 100
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char = i;code = 105
char = t;code = 116
char = h;code = 104
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char = r;code = 114
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char = s;code = 115
char = v;code = 118
char = e;code = 101
char = r;code = 114
char = a;code = 97
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char = o;code = 111
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char = 2;code = 50
char = 4;code = 52
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char = ,;code = 44
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char = w;code = 119
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char = h;code = 104
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char = o;code = 111
char = r;code = 114
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char = w;code = 119
char = i;code = 105
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char = h;code = 104
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char = t;code = 116
char = ;code = 32
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char = l;code = 108
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char = c;code = 99
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char = e;code = 101
char = d;code = 100
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char = i;code = 105
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char = h;code = 104
char = i;code = 105
char = b;code = 98
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char = t;code = 116
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char = r;code = 114
char = s;code = 115
char = ,;code = 44
char = ;code = 32
char = w;code = 119
char = e;code = 101
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = e;code = 101
char = x;code = 120
char = a;code = 97
char = m;code = 109
char = i;code = 105
char = n;code = 110
char = e;code = 101
char = d;code = 100
char = :;code = 58
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char = (;code = 40
char = 1;code = 49
char = );code = 41
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char = d;code = 100
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char = E;code = 69
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char = 1;code = 49
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char = C;code = 67
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char = (;code = 40
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char = i;code = 105
char = d;code = 100
char = e;code = 101
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = a;code = 97
char = p;code = 112
char = o;code = 111
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char = ,;code = 44
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char = b;code = 98
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char = i;code = 105
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char = 2;code = 50
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char = .;code = 46
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char = w;code = 119
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char = t;code = 116
char = h;code = 104
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char = E;code = 69
char = R;code = 82
char = K;code = 75
char = 1;code = 49
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result sql = Cyclooxygenase-2 (COX-2) content is increased in many types of tumor cells. We have investigated the mechanism by which resveratrol, a stilbene that is pro-apoptotic in many tumor cell lines, causes apoptosis in human head and neck squamous cell carcinoma UMSCC-22B cells by a mechanism involving cellular COX-2. UMSCC-22B cells treated with resveratrol for 24 h, with or without selected inhibitors, were examined: (1) for the presence of nuclear activated ERK1/2, p53 and COX-2, (2) for evidence of apoptosis, and (3) by chromatin immunoprecipitation to demonstrate p53 binding to the p21 promoter. Stilbene-induced apoptosis was concentration-dependent, and associated with ERK1/2 activation, serine-15 p53 phosphorylation and nuclear accumulation of these proteins. These effects were blocked by inhibition of either ERK1/2 or p53 activation. Resveratrol also caused p53 binding to the p21 promoter and increased abundance of COX-2 protein in UMSCC-22B cell nuclei. Resveratrol-induced nuclear COX-2 accumulation was dependent upon ERK1/2 activation, but not p53 activation. Activation of p53 and p53-dependent apoptosis were blocked by the COX-2 inhibitor, NS398, and by transfection of cells with COX-2-siRNA. In UMSCC-22B cells, resveratrol-induced apoptosis and induction of nuclear COX-2 accumulation share dependence on the ERK1/2 signal transduction pathway. Resveratrol-inducible nuclear accumulation of COX-2 is essential for p53 activation and p53-dependent apoptosis in these cancer cells.
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result sql = Resveratrol causes COX-2- and p53-dependent apoptosis in head and neck squamous cell cancer cells.
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char = a;code = 97
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = m;code = 109
char = e;code = 101
char = c;code = 99
char = h;code = 104
char = a;code = 97
char = n;code = 110
char = i;code = 105
char = s;code = 115
char = m;code = 109
char = ;code = 32
char = b;code = 98
char = y;code = 121
char = ;code = 32
char = w;code = 119
char = h;code = 104
char = i;code = 105
char = c;code = 99
char = h;code = 104
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = v;code = 118
char = e;code = 101
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = r;code = 114
char = o;code = 111
char = l;code = 108
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = s;code = 115
char = t;code = 116
char = i;code = 105
char = l;code = 108
char = b;code = 98
char = e;code = 101
char = n;code = 110
char = e;code = 101
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = a;code = 97
char = t;code = 116
char = ;code = 32
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = -;code = 45
char = a;code = 97
char = p;code = 112
char = o;code = 111
char = p;code = 112
char = t;code = 116
char = o;code = 111
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = m;code = 109
char = a;code = 97
char = n;code = 110
char = y;code = 121
char = ;code = 32
char = t;code = 116
char = u;code = 117
char = m;code = 109
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = c;code = 99
char = e;code = 101
char = l;code = 108
char = l;code = 108
char = ;code = 32
char = l;code = 108
char = i;code = 105
char = n;code = 110
char = e;code = 101
char = s;code = 115
char = ,;code = 44
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = u;code = 117
char = s;code = 115
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = p;code = 112
char = o;code = 111
char = p;code = 112
char = t;code = 116
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = h;code = 104
char = u;code = 117
char = m;code = 109
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = h;code = 104
char = e;code = 101
char = a;code = 97
char = d;code = 100
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = n;code = 110
char = e;code = 101
char = c;code = 99
char = k;code = 107
char = ;code = 32
char = s;code = 115
char = q;code = 113
char = u;code = 117
char = a;code = 97
char = m;code = 109
char = o;code = 111
char = u;code = 117
char = s;code = 115
char = ;code = 32
char = c;code = 99
char = e;code = 101
char = l;code = 108
char = l;code = 108
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = r;code = 114
char = c;code = 99
char = i;code = 105
char = n;code = 110
char = o;code = 111
char = m;code = 109
char = a;code = 97
char = ;code = 32
char = U;code = 85
char = M;code = 77
char = S;code = 83
char = C;code = 67
char = C;code = 67
char = -;code = 45
char = 2;code = 50
char = 2;code = 50
char = B;code = 66
char = ;code = 32
char = c;code = 99
char = e;code = 101
char = l;code = 108
char = l;code = 108
char = s;code = 115
char = ;code = 32
char = b;code = 98
char = y;code = 121
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = m;code = 109
char = e;code = 101
char = c;code = 99
char = h;code = 104
char = a;code = 97
char = n;code = 110
char = i;code = 105
char = s;code = 115
char = m;code = 109
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = v;code = 118
char = o;code = 111
char = l;code = 108
char = v;code = 118
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = c;code = 99
char = e;code = 101
char = l;code = 108
char = l;code = 108
char = u;code = 117
char = l;code = 108
char = a;code = 97
char = r;code = 114
char = ;code = 32
char = C;code = 67
char = O;code = 79
char = X;code = 88
char = -;code = 45
char = 2;code = 50
char = .;code = 46
char = ;code = 32
char = U;code = 85
char = M;code = 77
char = S;code = 83
char = C;code = 67
char = C;code = 67
char = -;code = 45
char = 2;code = 50
char = 2;code = 50
char = B;code = 66
char = ;code = 32
char = c;code = 99
char = e;code = 101
char = l;code = 108
char = l;code = 108
char = s;code = 115
char = ;code = 32
char = t;code = 116
char = r;code = 114
char = e;code = 101
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = v;code = 118
char = e;code = 101
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = r;code = 114
char = o;code = 111
char = l;code = 108
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = 2;code = 50
char = 4;code = 52
char = ;code = 32
char = h;code = 104
char = ,;code = 44
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = o;code = 111
char = u;code = 117
char = t;code = 116
char = ;code = 32
char = s;code = 115
char = e;code = 101
char = l;code = 108
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = h;code = 104
char = i;code = 105
char = b;code = 98
char = i;code = 105
char = t;code = 116
char = o;code = 111
char = r;code = 114
char = s;code = 115
char = ,;code = 44
char = ;code = 32
char = w;code = 119
char = e;code = 101
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = e;code = 101
char = x;code = 120
char = a;code = 97
char = m;code = 109
char = i;code = 105
char = n;code = 110
char = e;code = 101
char = d;code = 100
char = :;code = 58
char = ;code = 32
char = (;code = 40
char = 1;code = 49
char = );code = 41
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = e;code = 101
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = n;code = 110
char = u;code = 117
char = c;code = 99
char = l;code = 108
char = e;code = 101
char = a;code = 97
char = r;code = 114
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = E;code = 69
char = R;code = 82
char = K;code = 75
char = 1;code = 49
char = /;code = 47
char = 2;code = 50
char = ,;code = 44
char = ;code = 32
char = p;code = 112
char = 5;code = 53
char = 3;code = 51
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = C;code = 67
char = O;code = 79
char = X;code = 88
char = -;code = 45
char = 2;code = 50
char = ,;code = 44
char = ;code = 32
char = (;code = 40
char = 2;code = 50
char = );code = 41
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = e;code = 101
char = v;code = 118
char = i;code = 105
char = d;code = 100
char = e;code = 101
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = a;code = 97
char = p;code = 112
char = o;code = 111
char = p;code = 112
char = t;code = 116
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = s;code = 115
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = (;code = 40
char = 3;code = 51
char = );code = 41
char = ;code = 32
char = b;code = 98
char = y;code = 121
char = ;code = 32
char = c;code = 99
char = h;code = 104
char = r;code = 114
char = o;code = 111
char = m;code = 109
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = i;code = 105
char = m;code = 109
char = m;code = 109
char = u;code = 117
char = n;code = 110
char = o;code = 111
char = p;code = 112
char = r;code = 114
char = e;code = 101
char = c;code = 99
char = i;code = 105
char = p;code = 112
char = i;code = 105
char = t;code = 116
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = o;code = 111
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char = d;code = 100
char = e;code = 101
char = m;code = 109
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = ;code = 32
char = p;code = 112
char = 5;code = 53
char = 3;code = 51
char = ;code = 32
char = b;code = 98
char = i;code = 105
char = n;code = 110
char = d;code = 100
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = p;code = 112
char = 2;code = 50
char = 1;code = 49
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = m;code = 109
char = o;code = 111
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = .;code = 46
char = ;code = 32
char = S;code = 83
char = t;code = 116
char = i;code = 105
char = l;code = 108
char = b;code = 98
char = e;code = 101
char = n;code = 110
char = e;code = 101
char = -;code = 45
char = i;code = 105
char = n;code = 110
char = d;code = 100
char = u;code = 117
char = c;code = 99
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = a;code = 97
char = p;code = 112
char = o;code = 111
char = p;code = 112
char = t;code = 116
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = -;code = 45
char = d;code = 100
char = e;code = 101
char = p;code = 112
char = e;code = 101
char = n;code = 110
char = d;code = 100
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = s;code = 115
char = o;code = 111
char = c;code = 99
char = i;code = 105
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = E;code = 69
char = R;code = 82
char = K;code = 75
char = 1;code = 49
char = /;code = 47
char = 2;code = 50
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ,;code = 44
char = ;code = 32
char = s;code = 115
char = e;code = 101
char = r;code = 114
char = i;code = 105
char = n;code = 110
char = e;code = 101
char = -;code = 45
char = 1;code = 49
char = 5;code = 53
char = ;code = 32
char = p;code = 112
char = 5;code = 53
char = 3;code = 51
char = ;code = 32
char = p;code = 112
char = h;code = 104
char = o;code = 111
char = s;code = 115
char = p;code = 112
char = h;code = 104
char = o;code = 111
char = r;code = 114
char = y;code = 121
char = l;code = 108
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = n;code = 110
char = u;code = 117
char = c;code = 99
char = l;code = 108
char = e;code = 101
char = a;code = 97
char = r;code = 114
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = c;code = 99
char = u;code = 117
char = m;code = 109
char = u;code = 117
char = l;code = 108
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = t;code = 116
char = e;code = 101
char = i;code = 105
char = n;code = 110
char = s;code = 115
char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = e;code = 101
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = e;code = 101
char = f;code = 102
char = f;code = 102
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = s;code = 115
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char = w;code = 119
char = e;code = 101
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = b;code = 98
char = l;code = 108
char = o;code = 111
char = c;code = 99
char = k;code = 107
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = b;code = 98
char = y;code = 121
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char = i;code = 105
char = n;code = 110
char = h;code = 104
char = i;code = 105
char = b;code = 98
char = i;code = 105
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
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char = o;code = 111
char = f;code = 102
char = ;code = 32
char = e;code = 101
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = E;code = 69
char = R;code = 82
char = K;code = 75
char = 1;code = 49
char = /;code = 47
char = 2;code = 50
char = ;code = 32
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = p;code = 112
char = 5;code = 53
char = 3;code = 51
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = .;code = 46
char = ;code = 32
char = R;code = 82
char = e;code = 101
char = s;code = 115
char = v;code = 118
char = e;code = 101
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = r;code = 114
char = o;code = 111
char = l;code = 108
char = ;code = 32
char = a;code = 97
char = l;code = 108
char = s;code = 115
char = o;code = 111
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = u;code = 117
char = s;code = 115
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = p;code = 112
char = 5;code = 53
char = 3;code = 51
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char = b;code = 98
char = i;code = 105
char = n;code = 110
char = d;code = 100
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = p;code = 112
char = 2;code = 50
char = 1;code = 49
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = m;code = 109
char = o;code = 111
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = a;code = 97
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char = d;code = 100
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = c;code = 99
char = r;code = 114
char = e;code = 101
char = a;code = 97
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char = e;code = 101
char = d;code = 100
char = ;code = 32
char = a;code = 97
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char = u;code = 117
char = n;code = 110
char = d;code = 100
char = a;code = 97
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = C;code = 67
char = O;code = 79
char = X;code = 88
char = -;code = 45
char = 2;code = 50
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = t;code = 116
char = e;code = 101
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = U;code = 85
char = M;code = 77
char = S;code = 83
char = C;code = 67
char = C;code = 67
char = -;code = 45
char = 2;code = 50
char = 2;code = 50
char = B;code = 66
char = ;code = 32
char = c;code = 99
char = e;code = 101
char = l;code = 108
char = l;code = 108
char = ;code = 32
char = n;code = 110
char = u;code = 117
char = c;code = 99
char = l;code = 108
char = e;code = 101
char = i;code = 105
char = .;code = 46
char = ;code = 32
char = R;code = 82
char = e;code = 101
char = s;code = 115
char = v;code = 118
char = e;code = 101
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = r;code = 114
char = o;code = 111
char = l;code = 108
char = -;code = 45
char = i;code = 105
char = n;code = 110
char = d;code = 100
char = u;code = 117
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char = e;code = 101
char = d;code = 100
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char = c;code = 99
char = l;code = 108
char = e;code = 101
char = a;code = 97
char = r;code = 114
char = ;code = 32
char = C;code = 67
char = O;code = 79
char = X;code = 88
char = -;code = 45
char = 2;code = 50
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = c;code = 99
char = u;code = 117
char = m;code = 109
char = u;code = 117
char = l;code = 108
char = a;code = 97
char = t;code = 116
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result sql = Cyclooxygenase-2 (COX-2) content is increased in many types of tumor cells. We have investigated the mechanism by which resveratrol, a stilbene that is pro-apoptotic in many tumor cell lines, causes apoptosis in human head and neck squamous cell carcinoma UMSCC-22B cells by a mechanism involving cellular COX-2. UMSCC-22B cells treated with resveratrol for 24 h, with or without selected inhibitors, were examined: (1) for the presence of nuclear activated ERK1/2, p53 and COX-2, (2) for evidence of apoptosis, and (3) by chromatin immunoprecipitation to demonstrate p53 binding to the p21 promoter. Stilbene-induced apoptosis was concentration-dependent, and associated with ERK1/2 activation, serine-15 p53 phosphorylation and nuclear accumulation of these proteins. These effects were blocked by inhibition of either ERK1/2 or p53 activation. Resveratrol also caused p53 binding to the p21 promoter and increased abundance of COX-2 protein in UMSCC-22B cell nuclei. Resveratrol-induced nuclear COX-2 accumulation was dependent upon ERK1/2 activation, but not p53 activation. Activation of p53 and p53-dependent apoptosis were blocked by the COX-2 inhibitor, NS398, and by transfection of cells with COX-2-siRNA. In UMSCC-22B cells, resveratrol-induced apoptosis and induction of nuclear COX-2 accumulation share dependence on the ERK1/2 signal transduction pathway. Resveratrol-inducible nuclear accumulation of COX-2 is essential for p53 activation and p53-dependent apoptosis in these cancer cells.
Publication: J. Cell. Biochem. 2008 Aug 15 ;104(6)::2131-42. :doi: 10.1002/jcb.21772.
Publication Date: 2008 Aug 15
Study Author(s): Lin, Hung-Yun;Sun, Mingzeng;Tang, Heng-Yuan;Simone, Tessa M;Wu, Yun-Hsuan;Grandis, Jennifer R;Cao, H James;Davis, Paul J;Davis, Faith B;
Institution: Signal Transduction Laboratory, Ordway Research Institute, 150 New Scotland Avenue, Albany, New York 12208, USA. [email protected]
Shortcut link to this study:
Publication Date: 2008 Aug 15
Study Author(s): Lin, Hung-Yun;Sun, Mingzeng;Tang, Heng-Yuan;Simone, Tessa M;Wu, Yun-Hsuan;Grandis, Jennifer R;Cao, H James;Davis, Paul J;Davis, Faith B;
Institution: Signal Transduction Laboratory, Ordway Research Institute, 150 New Scotland Avenue, Albany, New York 12208, USA. [email protected]
Shortcut link to this study:
Cyclooxygenase-2 (COX-2) content is increased in many types of tumor cells. We have investigated the mechanism by which resveratrol, a stilbene that is pro-apoptotic in many tumor cell lines, causes apoptosis in human head and neck squamous cell carcinoma UMSCC-22B cells by a mechanism involving cellular COX-2. UMSCC-22B cells treated with resveratrol for 24 h, with or without selected inhibitors, were examined: (1) for the presence of nuclear activated ERK1/2, p53 and COX-2, (2) for evidence of apoptosis, and (3) by chromatin immunoprecipitation to demonstrate p53 binding to the p21 promoter. Stilbene-induced apoptosis was concentration-dependent, and associated with ERK1/2 activation, serine-15 p53 phosphorylation and nuclear accumulation of these proteins. These effects were blocked by inhibition of either ERK1/2 or p53 activation. Resveratrol also caused p53 binding to the p21 promoter and increased abundance of COX-2 protein in UMSCC-22B cell nuclei. Resveratrol-induced nuclear COX-2 accumulation was dependent upon ERK1/2 activation, but not p53 activation. Activation of p53 and p53-dependent apoptosis were blocked by the COX-2 inhibitor, NS398, and by transfection of cells with COX-2-siRNA. In UMSCC-22B cells, resveratrol-induced apoptosis and induction of nuclear COX-2 accumulation share dependence on the ERK1/2 signal transduction pathway. Resveratrol-inducible nuclear accumulation of COX-2 is essential for p53 activation and p53-dependent apoptosis in these cancer cells.
PMID: 18446786
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