char = T;code = 84 char = i;code = 105 char = m;code = 109 char = e;code = 101 char = -;code = 45 char = c;code = 99 char = o;code = 111 char = u;code = 117 char = r;code = 114 char = s;code = 115 char = e;code = 101 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 = 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 = q;code = 113 char = u;code = 117 char = e;code = 101 char = r;code = 114 char = c;code = 99 char = e;code = 101 char = t;code = 116 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = c;code = 99 char = e;code = 101 char = l;code = 108 char = l;code = 108 char = ;code = 32 char = s;code = 115 char = u;code = 117 char = r;code = 114 char = v;code = 118 char = i;code = 105 char = v;code = 118 char = a;code = 97 char = l;code = 108 char = /;code = 47 char = p;code = 112 char = r;code = 114 char = o;code = 111 char = l;code = 108 char = i;code = 105 char = f;code = 102 char = e;code = 101 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 = 32 char = p;code = 112 char = a;code = 97 char = t;code = 116 char = h;code = 104 char = w;code = 119 char = a;code = 97 char = y;code = 121 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 = p;code = 112 char = a;code = 97 char = t;code = 116 char = o;code = 111 char = m;code = 109 char = a;code = 97 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 = Time-course regulation of quercetin on cell survival/proliferation pathways in human hepatoma cells.
Time-course regulation of quercetin on cell survival/proliferation pathways in human hepatoma cells.char = Q;code = 81 char = u;code = 117 char = e;code = 101 char = r;code = 114 char = c;code = 99 char = e;code = 101 char = t;code = 116 char = i;code = 105 char = n;code = 110 char = ,;code = 44 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = d;code = 100 char = i;code = 105 char = e;code = 101 char = t;code = 116 char = a;code = 97 char = r;code = 114 char = y;code = 121 char = ;code = 32 char = f;code = 102 char = l;code = 108 char = a;code = 97 char = v;code = 118 char = o;code = 111 char = n;code = 110 char = o;code = 111 char = i;code = 105 char = d;code = 100 char = ,;code = 44 char = ;code = 32 char = h;code = 104 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = b;code = 98 char = e;code = 101 char = e;code = 101 char = n;code = 110 char = ;code = 32 char = s;code = 115 char = h;code = 104 char = o;code = 111 char = w;code = 119 char = n;code = 110 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = ;code = 32 char = p;code = 112 char = o;code = 111 char = s;code = 115 char = s;code = 115 char = e;code = 101 char = s;code = 115 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = t;code = 116 char = i;code = 105 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 = g;code = 103 char = e;code = 101 char = n;code = 110 char = i;code = 105 char = c;code = 99 char = ;code = 32 char = p;code = 112 char = r;code = 114 char = o;code = 111 char = p;code = 112 char = e;code = 101 char = r;code = 114 char = t;code = 116 char = i;code = 105 char = e;code = 101 char = s;code = 115 char = ,;code = 44 char = ;code = 32 char = b;code = 98 char = u;code = 117 char = t;code = 116 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 = c;code = 99 char = i;code = 105 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = m;code = 109 char = o;code = 111 char = l;code = 108 char = e;code = 101 char = c;code = 99 char = u;code = 117 char = l;code = 108 char = a;code = 97 char = r;code = 114 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 = s;code = 115 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = a;code = 97 char = c;code = 99 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = a;code = 97 char = r;code = 114 char = e;code = 101 char = ;code = 32 char = n;code = 110 char = o;code = 111 char = t;code = 116 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = o;code = 111 char = r;code = 114 char = o;code = 111 char = u;code = 117 char = g;code = 103 char = h;code = 104 char = l;code = 108 char = y;code = 121 char = ;code = 32 char = e;code = 101 char = l;code = 108 char = u;code = 117 char = c;code = 99 char = i;code = 105 char = d;code = 100 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = .;code = 46 char = ;code = 32 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 = w;code = 119 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = i;code = 105 char = m;code = 109 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = a;code = 97 char = t;code = 116 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = v;code = 118 char = e;code = 101 char = s;code = 115 char = t;code = 116 char = i;code = 105 char = g;code = 103 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = t;code = 116 char = i;code = 105 char = m;code = 109 char = e;code = 101 char = -;code = 45 char = c;code = 99 char = o;code = 111 char = u;code = 117 char = r;code = 114 char = s;code = 115 char = e;code = 101 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 = i;code = 105 char = o;code = 111 char = n;code = 110 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 = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = q;code = 113 char = u;code = 117 char = e;code = 101 char = r;code = 114 char = c;code = 99 char = e;code = 101 char = t;code = 116 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = s;code = 115 char = u;code = 117 char = r;code = 114 char = v;code = 118 char = i;code = 105 char = v;code = 118 char = a;code = 97 char = l;code = 108 char = /;code = 47 char = p;code = 112 char = r;code = 114 char = o;code = 111 char = l;code = 108 char = i;code = 105 char = f;code = 102 char = e;code = 101 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 = 32 char = p;code = 112 char = a;code = 97 char = t;code = 116 char = h;code = 104 char = w;code = 119 char = a;code = 97 char = y;code = 121 char = s;code = 115 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = a;code = 97 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 = p;code = 112 char = a;code = 97 char = t;code = 116 char = o;code = 111 char = m;code = 109 char = a;code = 97 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 = ;code = 32 char = (;code = 40 char = H;code = 72 char = e;code = 101 char = p;code = 112 char = G;code = 71 char = 2;code = 50 char = );code = 41 char = .;code = 46 char = ;code = 32 char = Q;code = 81 char = u;code = 117 char = e;code = 101 char = r;code = 114 char = c;code = 99 char = e;code = 101 char = t;code = 116 char = i;code = 105 char = n;code = 110 char = ;code = 32 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 = ;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 = ;code = 32 char = t;code = 116 char = i;code = 105 char = m;code = 109 char = e;code = 101 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 = 32 char = i;code = 105 char = n;code = 110 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 = 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 = ;code = 32 char = m;code = 109 char = a;code = 97 char = j;code = 106 char = o;code = 111 char = r;code = 114 char = ;code = 32 char = s;code = 115 char = u;code = 117 char = r;code = 114 char = v;code = 118 char = i;code = 105 char = v;code = 118 char = a;code = 97 char = l;code = 108 char = ;code = 32 char = s;code = 115 char = i;code = 105 char = g;code = 103 char = n;code = 110 char = a;code = 97 char = l;code = 108 char = i;code = 105 char = n;code = 110 char = g;code = 103 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 = 44 char = ;code = 32 char = i;code = 105 char = .;code = 46 char = ;code = 32 char = e;code = 101 char = .;code = 46 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 = 32 char = 3;code = 51 char = -;code = 45 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 = 32 char = 3;code = 51 char = -;code = 45 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 = 41 char = /;code = 47 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 = (;code = 40 char = A;code = 65 char = K;code = 75 char = T;code = 84 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 = (;code = 40 char = E;code = 69 char = R;code = 82 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 = C;code = 67 char = -;code = 45 char = a;code = 97 char = l;code = 108 char = p;code = 112 char = h;code = 104 char = a;code = 97 char = ;code = 32 char = (;code = 40 char = P;code = 80 char = K;code = 75 char = C;code = 67 char = -;code = 45 char = a;code = 97 char = l;code = 108 char = p;code = 112 char = h;code = 104 char = a;code = 97 char = );code = 41 char = ,;code = 44 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = n;code = 110 char = c;code = 99 char = e;code = 101 char = r;code = 114 char = t;code = 116 char = ;code = 32 char = w;code = 119 char = i;code = 105 char = t;code = 116 char = h;code = 104 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = t;code = 116 char = i;code = 105 char = m;code = 109 char = e;code = 101 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 = 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 = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = k;code = 107 char = e;code = 101 char = y;code = 121 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 = 45 char = r;code = 114 char = e;code = 101 char = l;code = 108 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = s;code = 115 char = i;code = 105 char = g;code = 103 char = n;code = 110 char = a;code = 97 char = l;code = 108 char = s;code = 115 char = :;code = 58 char = ;code = 32 char = c;code = 99 char = -;code = 45 char = j;code = 106 char = u;code = 117 char = n;code = 110 char = ;code = 32 char = a;code = 97 char = m;code = 109 char = i;code = 105 char = n;code = 110 char = o;code = 111 char = -;code = 45 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = m;code = 109 char = i;code = 105 char = n;code = 110 char = a;code = 97 char = l;code = 108 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 = J;code = 74 char = N;code = 78 char = K;code = 75 char = );code = 41 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = P;code = 80 char = K;code = 75 char = C;code = 67 char = -;code = 45 char = d;code = 100 char = e;code = 101 char = l;code = 108 char = t;code = 116 char = a;code = 97 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 = d;code = 100 char = a;code = 97 char = t;code = 116 char = a;code = 97 char = ;code = 32 char = s;code = 115 char = u;code = 117 char = g;code = 103 char = g;code = 103 char = e;code = 101 char = s;code = 115 char = t;code = 116 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = a;code = 97 char = t;code = 116 char = ;code = 32 char = q;code = 113 char = u;code = 117 char = e;code = 101 char = r;code = 114 char = c;code = 99 char = e;code = 101 char = t;code = 116 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = e;code = 101 char = x;code = 120 char = e;code = 101 char = r;code = 114 char = t;code = 116 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = t;code = 116 char = i;code = 105 char = g;code = 103 char = h;code = 104 char = t;code = 116 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 = 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 = s;code = 115 char = u;code = 117 char = r;code = 114 char = v;code = 118 char = i;code = 105 char = v;code = 118 char = a;code = 97 char = l;code = 108 char = /;code = 47 char = p;code = 112 char = r;code = 114 char = o;code = 111 char = l;code = 108 char = i;code = 105 char = f;code = 102 char = e;code = 101 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 = 32 char = p;code = 112 char = a;code = 97 char = t;code = 116 char = h;code = 104 char = w;code = 119 char = a;code = 97 char = y;code = 121 char = s;code = 115 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = a;code = 97 char = t;code = 116 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = q;code = 113 char = u;code = 117 char = i;code = 105 char = r;code = 114 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 = i;code = 105 char = n;code = 110 char = t;code = 116 char = e;code = 101 char = g;code = 103 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 = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = d;code = 100 char = i;code = 105 char = f;code = 102 char = f;code = 102 char = e;code = 101 char = r;code = 114 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = ;code = 32 char = s;code = 115 char = i;code = 105 char = g;code = 103 char = n;code = 110 char = a;code = 97 char = l;code = 108 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = p;code = 112 char = e;code = 101 char = r;code = 114 char = s;code = 115 char = i;code = 105 char = s;code = 115 char = t;code = 116 char = s;code = 115 char = ;code = 32 char = o;code = 111 char = v;code = 118 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = t;code = 116 char = i;code = 105 char = m;code = 109 char = e;code = 101 char = ,;code = 44 char = ;code = 32 char = b;code = 98 char = e;code = 101 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = b;code = 98 char = a;code = 97 char = l;code = 108 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 = t;code = 116 char = h;code = 104 char = e;code = 101 char = s;code = 115 char = e;code = 101 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 = o;code = 111 char = r;code = 114 char = y;code = 121 char = ;code = 32 char = s;code = 115 char = i;code = 105 char = g;code = 103 char = n;code = 110 char = a;code = 97 char = l;code = 108 char = s;code = 115 char = ;code = 32 char = w;code = 119 char = h;code = 104 char = a;code = 97 char = t;code = 116 char = ;code = 32 char = d;code = 100 char = e;code = 101 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = m;code = 109 char = i;code = 105 char = n;code = 110 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 = f;code = 102 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = H;code = 72 char = e;code = 101 char = p;code = 112 char = G;code = 71 char = 2;code = 50 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 result sql = Quercetin, a dietary flavonoid, has been shown to possess anticarcinogenic properties, but the precise molecular mechanisms of action are not thoroughly elucidated. This study was aimed at investigating the time-course regulation effect of quercetin on survival/proliferation pathways in a human hepatoma cell line (HepG2). Quercetin induced a significant time-dependent inactivation of the major survival signaling proteins, i. e., phosphatidylinositol 3-kinase (PI 3-kinase)/protein kinase B (AKT), extracellular regulated kinase (ERK), protein kinase C-alpha (PKC-alpha), in concert with a time-dependent activation of key death-related signals: c-jun amino-terminal kinase (JNK) and PKC-delta. These data suggest that quercetin exerts a tight regulation of survival/proliferation pathways that requires the integration of different signals and persists over time, being the balance of these regulatory signals what determines the fate of HepG2 cells.
Publication: Mol Nutr Food Res 2008 Apr ;52(4)::457-64. :doi: 10.1002/mnfr.200700203.
Publication Date: 2008 Apr
Study Author(s): Granado-Serrano, Ana Belén;Angeles Martín, María;Bravo, Laura;Goya, Luis;Ramos, Sonia;
Institution: Department of Metabolism and Nutrition, Instituto del Frío, Consejo Superior de Investigaciones Científicas (CSIC), José Antonio Novais 10, Ciudad Universitaria, Madrid, Spain.
Shortcut link to this study:
Quercetin, a dietary flavonoid, has been shown to possess anticarcinogenic properties, but the precise molecular mechanisms of action are not thoroughly elucidated. This study was aimed at investigating the time-course regulation effect of quercetin on survival/proliferation pathways in a human hepatoma cell line (HepG2). Quercetin induced a significant time-dependent inactivation of the major survival signaling proteins, i. e., phosphatidylinositol 3-kinase (PI 3-kinase)/protein kinase B (AKT), extracellular regulated kinase (ERK), protein kinase C-alpha (PKC-alpha), in concert with a time-dependent activation of key death-related signals: c-jun amino-terminal kinase (JNK) and PKC-delta. These data suggest that quercetin exerts a tight regulation of survival/proliferation pathways that requires the integration of different signals and persists over time, being the balance of these regulatory signals what determines the fate of HepG2 cells.
PMID: 18324708