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result sql = Effect of zinc on regulation of insulin-like growth factor signaling in human androgen-independent prostate cancer cells.
Effect of zinc on regulation of insulin-like growth factor signaling in human androgen-independent prostate cancer cells.
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char = P;code = 80
char = -;code = 45
char = 3;code = 51
char = );code = 41
char = ,;code = 44
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = s;code = 115
char = u;code = 117
char = l;code = 108
char = i;code = 105
char = n;code = 110
char = -;code = 45
char = l;code = 108
char = i;code = 105
char = k;code = 107
char = e;code = 101
char = ;code = 32
char = g;code = 103
char = r;code = 114
char = o;code = 111
char = w;code = 119
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = f;code = 102
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = o;code = 111
char = r;code = 114
char = -;code = 45
char = I;code = 73
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = c;code = 99
char = e;code = 101
char = p;code = 112
char = t;code = 116
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = (;code = 40
char = I;code = 73
char = G;code = 71
char = F;code = 70
char = -;code = 45
char = I;code = 73
char = R;code = 82
char = );code = 41
char = ,;code = 44
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = s;code = 115
char = u;code = 117
char = l;code = 108
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = c;code = 99
char = e;code = 101
char = p;code = 112
char = t;code = 116
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = s;code = 115
char = u;code = 117
char = b;code = 98
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 = 45
char = 1;code = 49
char = ;code = 32
char = (;code = 40
char = I;code = 73
char = R;code = 82
char = S;code = 83
char = -;code = 45
char = 1;code = 49
char = );code = 41
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = I;code = 73
char = R;code = 82
char = S;code = 83
char = -;code = 45
char = 2;code = 50
char = ,;code = 44
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 = a;code = 97
char = t;code = 116
char = i;code = 105
char = d;code = 100
char = y;code = 121
char = l;code = 108
char = i;code = 105
char = n;code = 110
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = t;code = 116
char = o;code = 111
char = l;code = 108
char = -;code = 45
char = 3;code = 51
char = ;code = 32
char = k;code = 107
char = i;code = 105
char = n;code = 110
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = (;code = 40
char = P;code = 80
char = I;code = 73
char = -;code = 45
char = 3;code = 51
char = ;code = 32
char = K;code = 75
char = );code = 41
char = ,;code = 44
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 = k;code = 107
char = i;code = 105
char = n;code = 110
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = B;code = 66
char = ;code = 32
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = A;code = 65
char = k;code = 107
char = t;code = 116
char = ,;code = 44
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 = e;code = 101
char = d;code = 100
char = ;code = 32
char = A;code = 65
char = k;code = 107
char = t;code = 116
char = ;code = 32
char = (;code = 40
char = p;code = 112
char = -;code = 45
char = A;code = 65
char = k;code = 107
char = t;code = 116
char = );code = 41
char = ,;code = 44
char = ;code = 32
char = e;code = 101
char = x;code = 120
char = t;code = 116
char = r;code = 114
char = a;code = 97
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 = r;code = 114
char = e;code = 101
char = g;code = 103
char = u;code = 117
char = l;code = 108
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = k;code = 107
char = i;code = 105
char = n;code = 110
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = 1;code = 49
char = /;code = 47
char = 2;code = 50
char = ;code = 32
char = (;code = 40
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 = 41
char = ,;code = 44
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 = 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 = 32
char = (;code = 40
char = p;code = 112
char = -;code = 45
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 = 41
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = c;code = 99
char = y;code = 121
char = c;code = 99
char = l;code = 108
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = D;code = 68
char = 1;code = 49
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 = l;code = 108
char = e;code = 101
char = v;code = 118
char = e;code = 101
char = l;code = 108
char = s;code = 115
char = ;code = 32
char = w;code = 119
char = e;code = 101
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = s;code = 115
char = e;code = 101
char = s;code = 115
char = s;code = 115
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = b;code = 98
char = y;code = 121
char = ;code = 32
char = W;code = 87
char = e;code = 101
char = s;code = 115
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = n;code = 110
char = ;code = 32
char = b;code = 98
char = l;code = 108
char = o;code = 111
char = t;code = 116
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = a;code = 97
char = l;code = 108
char = y;code = 121
char = s;code = 115
char = i;code = 105
char = s;code = 115
char = .;code = 46
char = ;code = 32
char = A;code = 65
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 = f;code = 102
char = i;code = 105
char = r;code = 114
char = m;code = 109
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = b;code = 98
char = y;code = 121
char = ;code = 32
char = 4;code = 52
char = ';code = 39
char = ,;code = 44
char = 6;code = 54
char = ';code = 39
char = -;code = 45
char = d;code = 100
char = i;code = 105
char = a;code = 97
char = m;code = 109
char = i;code = 105
char = n;code = 110
char = i;code = 105
char = d;code = 100
char = o;code = 111
char = -;code = 45
char = 2;code = 50
char = -;code = 45
char = p;code = 112
char = h;code = 104
char = e;code = 101
char = n;code = 110
char = y;code = 121
char = l;code = 108
char = i;code = 105
char = n;code = 110
char = d;code = 100
char = o;code = 111
char = l;code = 108
char = e;code = 101
char = ;code = 32
char = d;code = 100
char = i;code = 105
char = h;code = 104
char = y;code = 121
char = d;code = 100
char = r;code = 114
char = o;code = 111
char = c;code = 99
char = h;code = 104
char = l;code = 108
char = o;code = 111
char = r;code = 114
char = i;code = 105
char = d;code = 100
char = e;code = 101
char = ;code = 32
char = (;code = 40
char = D;code = 68
char = A;code = 65
char = P;code = 80
char = I;code = 73
char = );code = 41
char = ;code = 32
char = s;code = 115
char = t;code = 116
char = a;code = 97
char = i;code = 105
char = n;code = 110
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = m;code = 109
char = i;code = 105
char = t;code = 116
char = o;code = 111
char = c;code = 99
char = h;code = 104
char = o;code = 111
char = n;code = 110
char = d;code = 100
char = r;code = 114
char = i;code = 105
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = m;code = 109
char = e;code = 101
char = m;code = 109
char = b;code = 98
char = r;code = 114
char = a;code = 97
char = n;code = 110
char = e;code = 101
char = ;code = 32
char = p;code = 112
char = o;code = 111
char = t;code = 116
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = i;code = 105
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = s;code = 115
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char = p;code = 112
char = e;code = 101
char = r;code = 114
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = m;code = 109
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = u;code = 117
char = s;code = 115
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = r;code = 114
char = h;code = 104
char = o;code = 111
char = d;code = 100
char = a;code = 97
char = m;code = 109
char = i;code = 105
char = n;code = 110
char = e;code = 101
char = -;code = 45
char = 1;code = 49
char = 2;code = 50
char = 3;code = 51
char = ;code = 32
char = s;code = 115
char = t;code = 116
char = a;code = 97
char = i;code = 105
char = n;code = 110
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = m;code = 109
char = e;code = 101
char = t;code = 116
char = h;code = 104
char = o;code = 111
char = d;code = 100
char = .;code = 46
char = <;code = 60
char = b;code = 98
char = r;code = 114
char = /;code = 47
char = >;code = 62
char = <;code = 60
char = b;code = 98
char = r;code = 114
char = /;code = 47
char = >;code = 62
char = <;code = 60
char = b;code = 98
char = >;code = 62
char = R;code = 82
char = E;code = 69
char = S;code = 83
char = U;code = 85
char = L;code = 76
char = T;code = 84
char = S;code = 83
char = ;code = 32
char = :;code = 58
char = ;code = 32
char = <;code = 60
char = /;code = 47
char = b;code = 98
char = >;code = 62
char = Z;code = 90
char = i;code = 105
char = n;code = 110
char = c;code = 99
char = ;code = 32
char = s;code = 115
char = i;code = 105
char = g;code = 103
char = n;code = 110
char = i;code = 105
char = f;code = 102
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = l;code = 108
char = y;code = 121
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = d;code = 100
char = u;code = 117
char = c;code = 99
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = e;code = 101
char = l;code = 108
char = l;code = 108
char = ;code = 32
char = v;code = 118
char = i;code = 105
char = a;code = 97
char = b;code = 98
char = i;code = 105
char = l;code = 108
char = i;code = 105
char = t;code = 116
char = y;code = 121
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = P;code = 80
char = C;code = 67
char = -;code = 45
char = 3;code = 51
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
char = ;code = 32
char = I;code = 73
char = t;code = 116
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = c;code = 99
char = r;code = 114
char = e;code = 101
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = s;code = 115
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 = o;code = 111
char = t;code = 116
char = e;code = 101
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = l;code = 108
char = e;code = 101
char = v;code = 118
char = e;code = 101
char = l;code = 108
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = I;code = 73
char = G;code = 71
char = F;code = 70
char = -;code = 45
char = I;code = 73
char = R;code = 82
char = ,;code = 44
char = ;code = 32
char = I;code = 73
char = R;code = 82
char = S;code = 83
char = -;code = 45
char = 1;code = 49
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = I;code = 73
char = R;code = 82
char = S;code = 83
char = -;code = 45
char = 2;code = 50
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = i;code = 105
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char = c;code = 99
char = r;code = 114
char = e;code = 101
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = s;code = 115
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char = t;code = 116
char = h;code = 104
char = e;code = 101
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char = l;code = 108
char = e;code = 101
char = v;code = 118
char = e;code = 101
char = l;code = 108
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = I;code = 73
char = G;code = 71
char = F;code = 70
char = B;code = 66
char = P;code = 80
char = -;code = 45
char = 3;code = 51
char = .;code = 46
char = ;code = 32
char = Z;code = 90
char = i;code = 105
char = n;code = 110
char = c;code = 99
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = d;code = 100
char = u;code = 117
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char = e;code = 101
char = s;code = 115
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char = t;code = 116
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char = e;code = 101
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char = l;code = 108
char = e;code = 101
char = v;code = 118
char = e;code = 101
char = l;code = 108
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = P;code = 80
char = I;code = 73
char = -;code = 45
char = 3;code = 51
char = ;code = 32
char = K;code = 75
char = ,;code = 44
char = ;code = 32
char = A;code = 65
char = k;code = 107
char = t;code = 116
char = ,;code = 44
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 = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = c;code = 99
char = y;code = 121
char = c;code = 99
char = l;code = 108
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = D;code = 68
char = l;code = 108
char = .;code = 46
char = ;code = 32
char = L;code = 76
char = o;code = 111
char = s;code = 115
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = m;code = 109
char = i;code = 105
char = t;code = 116
char = o;code = 111
char = c;code = 99
char = h;code = 104
char = o;code = 111
char = n;code = 110
char = d;code = 100
char = r;code = 114
char = i;code = 105
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = m;code = 109
char = e;code = 101
char = m;code = 109
char = b;code = 98
char = r;code = 114
char = a;code = 97
char = n;code = 110
char = e;code = 101
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char = p;code = 112
char = o;code = 111
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char = t;code = 116
char = i;code = 105
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = a;code = 97
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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 = t;code = 116
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = c;code = 99
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char = l;code = 108
char = l;code = 108
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = a;code = 97
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = w;code = 119
char = e;code = 101
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = l;code = 108
char = s;code = 115
char = o;code = 111
char = ;code = 32
char = o;code = 111
char = b;code = 98
char = s;code = 115
char = e;code = 101
char = r;code = 114
char = v;code = 118
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = i;code = 105
char = n;code = 110
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char = z;code = 122
char = i;code = 105
char = n;code = 110
char = c;code = 99
char = -;code = 45
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
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
char = <;code = 60
char = b;code = 98
char = r;code = 114
char = /;code = 47
char = >;code = 62
char = <;code = 60
char = b;code = 98
char = r;code = 114
char = /;code = 47
char = >;code = 62
char = <;code = 60
char = b;code = 98
char = >;code = 62
char = C;code = 67
char = O;code = 79
char = N;code = 78
char = C;code = 67
char = L;code = 76
char = U;code = 85
char = S;code = 83
char = I;code = 73
char = O;code = 79
char = N;code = 78
char = ;code = 32
char = :;code = 58
char = ;code = 32
char = <;code = 60
char = /;code = 47
char = b;code = 98
char = >;code = 62
char = T;code = 84
char = h;code = 104
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = s;code = 115
char = t;code = 116
char = u;code = 117
char = d;code = 100
char = y;code = 121
char = ;code = 32
char = s;code = 115
char = u;code = 117
char = g;code = 103
char = g;code = 103
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result sql = BACKGROUND : Prostate cancer is one of the most frequently diagnosed cancers in men. Progression of these tumors is facilitated by growth factors that activate critical signaling cascades thereby promote prostate cancer cell growth, survival, and migration. Among these, insulin-like growth factors (IGFs) signaling pathway contributes a major role. In this study, we examined the effect of zinc on insulin-like growth factors signaling in prostate cancer cells.

METHODS : Human androgen-independent prostatic carcinoma (PC-3) cells were treated with different concentrations of zinc (20-100micromol/l) for 24 and 48h. Cell viability was performed by 3[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide (MTT) assay. Insulin-like growth factor binding protein-3 (IGFBP-3), insulin-like growth factor-I receptor (IGF-IR), insulin receptor substrate-1 (IRS-1) and IRS-2, phosphatidylinositol-3 kinase (PI-3 K), protein kinase B or Akt, phosphorylated Akt (p-Akt), extracellular regulated kinase 1/2 (ERK1/2), phosphorylated ERK1/2 (p-ERK1/2), and cyclin D1 protein levels were assessed by Western blot analysis. Apoptosis was confirmed by 4',6'-diaminido-2-phenylindole dihydrochloride (DAPI) staining, and mitochondrial membrane potential was performed using rhodamine-123 staining method.

RESULTS : Zinc significantly reduces the cell viability of PC-3 cells. It decreases the protein levels of IGF-IR, IRS-1, and IRS-2 and increases the level of IGFBP-3. Zinc reduces the levels of PI-3 K, Akt, ERK1/2, and cyclin Dl. Loss of mitochondrial membrane potential and apoptotic cell death were also observed in zinc-treated cells.

CONCLUSION : This study suggests that zinc decreases the survival of androgen-independent prostate cancer cells by modulating the expression of IGF system components and its signaling molecules. Thus, zinc may be qualified as a potential agent for the treatment of prostate cancer.

Publication: Clin. Chim. Acta 2010 Feb ;411(3-4)::172-8.
Publication Date: 2010 Feb
Study Author(s): Banudevi, Sivanantham;Senthilkumar, Kalimuthu;Sharmila, Govindaraj;Arunkumar, Ramachandran;Vijayababu, Marati Radhakrishnan;Arunakaran, Jagadeesan;
Institution: Department of Endocrinology, Dr. ALM Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani, Chennai - 600113, Tamilnadu, India.
Shortcut link to this study:
BACKGROUND : Prostate cancer is one of the most frequently diagnosed cancers in men. Progression of these tumors is facilitated by growth factors that activate critical signaling cascades thereby promote prostate cancer cell growth, survival, and migration. Among these, insulin-like growth factors (IGFs) signaling pathway contributes a major role. In this study, we examined the effect of zinc on insulin-like growth factors signaling in prostate cancer cells.

METHODS : Human androgen-independent prostatic carcinoma (PC-3) cells were treated with different concentrations of zinc (20-100micromol/l) for 24 and 48h. Cell viability was performed by 3[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide (MTT) assay. Insulin-like growth factor binding protein-3 (IGFBP-3), insulin-like growth factor-I receptor (IGF-IR), insulin receptor substrate-1 (IRS-1) and IRS-2, phosphatidylinositol-3 kinase (PI-3 K), protein kinase B or Akt, phosphorylated Akt (p-Akt), extracellular regulated kinase 1/2 (ERK1/2), phosphorylated ERK1/2 (p-ERK1/2), and cyclin D1 protein levels were assessed by Western blot analysis. Apoptosis was confirmed by 4',6'-diaminido-2-phenylindole dihydrochloride (DAPI) staining, and mitochondrial membrane potential was performed using rhodamine-123 staining method.

RESULTS : Zinc significantly reduces the cell viability of PC-3 cells. It decreases the protein levels of IGF-IR, IRS-1, and IRS-2 and increases the level of IGFBP-3. Zinc reduces the levels of PI-3 K, Akt, ERK1/2, and cyclin Dl. Loss of mitochondrial membrane potential and apoptotic cell death were also observed in zinc-treated cells.

CONCLUSION : This study suggests that zinc decreases the survival of androgen-independent prostate cancer cells by modulating the expression of IGF system components and its signaling molecules. Thus, zinc may be qualified as a potential agent for the treatment of prostate cancer.
PMID: 19913001

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