char = H;code = 72
char = I;code = 73
char = V;code = 86
char = -;code = 45
char = 1;code = 49
char = ;code = 32
char = V;code = 86
char = i;code = 105
char = r;code = 114
char = a;code = 97
char = l;code = 108
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 = 45
char = r;code = 114
char = ;code = 32
char = (;code = 40
char = V;code = 86
char = p;code = 112
char = r;code = 114
char = );code = 41
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = t;code = 116
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = g;code = 103
char = a;code = 97
char = i;code = 105
char = n;code = 110
char = s;code = 115
char = t;code = 116
char = ;code = 32
char = l;code = 108
char = e;code = 101
char = t;code = 116
char = h;code = 104
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = s;code = 115
char = u;code = 117
char = p;code = 112
char = e;code = 101
char = r;code = 114
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = i;code = 105
char = g;code = 103
char = e;code = 101
char = n;code = 110
char = ;code = 32
char = c;code = 99
char = h;code = 104
char = a;code = 97
char = l;code = 108
char = l;code = 108
char = e;code = 101
char = n;code = 110
char = g;code = 103
char = e;code = 101
char = ;code = 32
char = w;code = 119
char = h;code = 104
char = i;code = 105
char = l;code = 108
char = e;code = 101
char = ;code = 32
char = m;code = 109
char = a;code = 97
char = i;code = 105
char = n;code = 110
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 = h;code = 104
char = o;code = 111
char = m;code = 109
char = e;code = 101
char = o;code = 111
char = s;code = 115
char = t;code = 116
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = T;code = 84
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 = e;code = 101
char = v;code = 118
char = e;code = 101
char = l;code = 108
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = v;code = 118
char = i;code = 105
char = v;code = 118
char = o;code = 111
char = .;code = 46
result sql = HIV-1 Viral protein-r (Vpr) protects against lethal superantigen challenge while maintaining homeostatic T cell levels in vivo.
HIV-1 Viral protein-r (Vpr) protects against lethal superantigen challenge while maintaining homeostatic T cell levels in vivo.
char = T;code = 84
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = H;code = 72
char = I;code = 73
char = V;code = 86
char = -;code = 45
char = 1;code = 49
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = c;code = 99
char = e;code = 101
char = s;code = 115
char = s;code = 115
char = o;code = 111
char = r;code = 114
char = y;code = 121
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 = V;code = 86
char = p;code = 112
char = r;code = 114
char = ;code = 32
char = e;code = 101
char = x;code = 120
char = h;code = 104
char = i;code = 105
char = b;code = 98
char = i;code = 105
char = t;code = 116
char = s;code = 115
char = ;code = 32
char = m;code = 109
char = a;code = 97
char = n;code = 110
char = y;code = 121
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = t;code = 116
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = f;code = 102
char = e;code = 101
char = a;code = 97
char = t;code = 116
char = u;code = 117
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = ;code = 32
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 = t;code = 116
char = o;code = 111
char = ;code = 32
char = m;code = 109
char = a;code = 97
char = c;code = 99
char = r;code = 114
char = o;code = 111
char = p;code = 112
char = h;code = 104
char = a;code = 97
char = g;code = 103
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = T;code = 84
char = ;code = 32
char = c;code = 99
char = e;code = 101
char = l;code = 108
char = l;code = 108
char = ;code = 32
char = b;code = 98
char = i;code = 105
char = o;code = 111
char = l;code = 108
char = o;code = 111
char = g;code = 103
char = y;code = 121
char = .;code = 46
char = ;code = 32
char = A;code = 65
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = v;code = 118
char = i;code = 105
char = r;code = 114
char = a;code = 97
char = l;code = 108
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 = o;code = 111
char = r;code = 114
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = s;code = 115
char = o;code = 111
char = l;code = 108
char = u;code = 117
char = b;code = 98
char = l;code = 108
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 = e;code = 101
char = ;code = 32
char = i;code = 105
char = t;code = 116
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = s;code = 115
char = u;code = 117
char = p;code = 112
char = p;code = 112
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = m;code = 109
char = m;code = 109
char = u;code = 117
char = n;code = 110
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 = 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 = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = c;code = 99
char = y;code = 121
char = t;code = 116
char = o;code = 111
char = k;code = 107
char = i;code = 105
char = n;code = 110
char = e;code = 101
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = d;code = 100
char = u;code = 117
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = v;code = 118
char = i;code = 105
char = t;code = 116
char = r;code = 114
char = o;code = 111
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = p;code = 112
char = a;code = 97
char = r;code = 114
char = t;code = 116
char = ;code = 32
char = b;code = 98
char = y;code = 121
char = ;code = 32
char = t;code = 116
char = a;code = 97
char = r;code = 114
char = g;code = 103
char = e;code = 101
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 = 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 = N;code = 78
char = F;code = 70
char = -;code = 45
char = k;code = 107
char = a;code = 97
char = p;code = 112
char = p;code = 112
char = a;code = 97
char = B;code = 66
char = .;code = 46
char = ;code = 32
char = I;code = 73
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = g;code = 103
char = a;code = 97
char = r;code = 114
char = d;code = 100
char = ;code = 32
char = w;code = 119
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = o;code = 111
char = u;code = 117
char = g;code = 103
char = h;code = 104
char = t;code = 116
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = t;code = 116
char = e;code = 101
char = s;code = 115
char = t;code = 116
char = ;code = 32
char = i;code = 105
char = t;code = 116
char = s;code = 115
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
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = v;code = 118
char = i;code = 105
char = v;code = 118
char = o;code = 111
char = ;code = 32
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = N;code = 78
char = F;code = 70
char = -;code = 45
char = k;code = 107
char = a;code = 97
char = p;code = 112
char = p;code = 112
char = a;code = 97
char = B;code = 66
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 = m;code = 109
char = m;code = 109
char = u;code = 117
char = n;code = 110
char = e;code = 101
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 = .;code = 46
char = ;code = 32
char = W;code = 87
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 = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
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 = V;code = 86
char = p;code = 112
char = r;code = 114
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = l;code = 108
char = e;code = 101
char = t;code = 116
char = h;code = 104
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = x;code = 120
char = i;code = 105
char = n;code = 110
char = -;code = 45
char = m;code = 109
char = e;code = 101
char = d;code = 100
char = i;code = 105
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = c;code = 99
char = h;code = 104
char = a;code = 97
char = l;code = 108
char = l;code = 108
char = e;code = 101
char = n;code = 110
char = g;code = 103
char = e;code = 101
char = ;code = 32
char = m;code = 109
char = o;code = 111
char = d;code = 100
char = e;code = 101
char = l;code = 108
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = m;code = 109
char = i;code = 105
char = c;code = 99
char = e;code = 101
char = .;code = 46
char = ;code = 32
char = I;code = 73
char = n;code = 110
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = v;code = 118
char = e;code = 101
char = n;code = 110
char = o;code = 111
char = u;code = 117
char = s;code = 115
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = l;code = 108
char = i;code = 105
char = v;code = 118
char = e;code = 101
char = r;code = 114
char = y;code = 121
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = V;code = 86
char = p;code = 112
char = r;code = 114
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = s;code = 115
char = u;code = 117
char = f;code = 102
char = f;code = 102
char = i;code = 105
char = c;code = 99
char = i;code = 105
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = t;code = 116
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = ;code = 32
char = m;code = 109
char = i;code = 105
char = c;code = 99
char = e;code = 101
char = ;code = 32
char = f;code = 102
char = r;code = 114
char = o;code = 111
char = m;code = 109
char = ;code = 32
char = l;code = 108
char = e;code = 101
char = t;code = 116
char = h;code = 104
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = c;code = 99
char = h;code = 104
char = a;code = 97
char = l;code = 108
char = l;code = 108
char = e;code = 101
char = n;code = 110
char = g;code = 103
char = e;code = 101
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = s;code = 115
char = t;code = 116
char = a;code = 97
char = p;code = 112
char = h;code = 104
char = y;code = 121
char = l;code = 108
char = o;code = 111
char = c;code = 99
char = o;code = 111
char = c;code = 99
char = c;code = 99
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = e;code = 101
char = n;code = 110
char = d;code = 100
char = o;code = 111
char = t;code = 116
char = o;code = 111
char = x;code = 120
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = B;code = 66
char = ;code = 32
char = (;code = 40
char = S;code = 83
char = E;code = 69
char = B;code = 66
char = );code = 41
char = .;code = 46
char = ;code = 32
char = F;code = 70
char = u;code = 117
char = r;code = 114
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = r;code = 114
char = m;code = 109
char = o;code = 111
char = r;code = 114
char = e;code = 101
char = ,;code = 44
char = ;code = 32
char = V;code = 86
char = p;code = 112
char = r;code = 114
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = t;code = 116
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = h;code = 104
char = o;code = 111
char = s;code = 115
char = t;code = 116
char = ;code = 32
char = C;code = 67
char = D;code = 68
char = 4;code = 52
char = +;code = 43
char = ;code = 32
char = T;code = 84
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 = f;code = 102
char = r;code = 114
char = o;code = 111
char = m;code = 109
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = v;code = 118
char = i;code = 105
char = v;code = 118
char = o;code = 111
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = p;code = 112
char = l;code = 108
char = e;code = 101
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = l;code = 108
char = i;code = 105
char = k;code = 107
char = e;code = 101
char = l;code = 108
char = y;code = 121
char = ;code = 32
char = b;code = 98
char = y;code = 121
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = e;code = 101
char = v;code = 118
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = d;code = 100
char = u;code = 117
char = c;code = 99
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 = A;code = 65
char = I;code = 73
char = C;code = 67
char = D;code = 68
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = S;code = 83
char = E;code = 69
char = B;code = 66
char = -;code = 45
char = e;code = 101
char = x;code = 120
char = p;code = 112
char = o;code = 111
char = s;code = 115
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 = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = p;code = 112
char = o;code = 111
char = s;code = 115
char = t;code = 116
char = -;code = 45
char = t;code = 116
char = o;code = 111
char = x;code = 120
char = i;code = 105
char = n;code = 110
char = -;code = 45
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 = f;code = 102
char = a;code = 97
char = s;code = 115
char = h;code = 104
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = .;code = 46
char = ;code = 32
char = U;code = 85
char = n;code = 110
char = d;code = 100
char = e;code = 101
char = r;code = 114
char = s;code = 115
char = t;code = 116
char = a;code = 97
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 = h;code = 104
char = e;code = 101
char = ;code = 32
char = b;code = 98
char = i;code = 105
char = o;code = 111
char = l;code = 108
char = o;code = 111
char = g;code = 103
char = y;code = 121
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = V;code = 86
char = p;code = 112
char = r;code = 114
char = ';code = 39
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = i;code = 105
char = t;code = 116
char = i;code = 105
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = m;code = 109
char = o;code = 111
char = d;code = 100
char = e;code = 101
char = l;code = 108
char = ;code = 32
char = m;code = 109
char = a;code = 97
char = y;code = 121
char = ;code = 32
char = a;code = 97
char = l;code = 108
char = l;code = 108
char = o;code = 111
char = w;code = 119
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = n;code = 110
char = e;code = 101
char = w;code = 119
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = s;code = 115
char = i;code = 105
char = g;code = 103
char = h;code = 104
char = t;code = 116
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = t;code = 116
char = o;code = 111
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 = 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 = h;code = 104
char = y;code = 121
char = p;code = 112
char = e;code = 101
char = r;code = 114
char = i;code = 105
char = n;code = 110
char = f;code = 102
char = l;code = 108
char = a;code = 97
char = m;code = 109
char = m;code = 109
char = a;code = 97
char = t;code = 116
char = o;code = 111
char = r;code = 114
char = y;code = 121
char = ;code = 32
char = d;code = 100
char = i;code = 105
char = s;code = 115
char = e;code = 101
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = V;code = 86
char = p;code = 112
char = r;code = 114
char = ;code = 32
char = p;code = 112
char = a;code = 97
char = t;code = 116
char = h;code = 104
char = o;code = 111
char = b;code = 98
char = i;code = 105
char = o;code = 111
char = l;code = 108
char = o;code = 111
char = g;code = 103
char = y;code = 121
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = t;code = 116
char = e;code = 101
char = x;code = 120
char = t;code = 116
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = H;code = 72
char = I;code = 73
char = V;code = 86
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = f;code = 102
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = .;code = 46
char = <;code = 60
char = b;code = 98
char = r;code = 114
char = /;code = 47
char = >;code = 62
result sql = The HIV-1 accessory protein Vpr exhibits many interesting features related to macrophage and T cell biology. As a viral protein or as a soluble molecule it can suppress immune cell activation and cytokine production in vitro in part by targeted inhibition of NF-kappaB. In this regard we sought to test its effects in vivo on an NF-kappaB-dependent immune pathway. We examined the activity of Vpr in a lethal toxin-mediated challenge model in mice. Intravenous delivery of Vpr was sufficient to protect mice from lethal challenge with staphylococcal endotoxin B (SEB). Furthermore, Vpr protected host CD4+ T cells from in vivo depletion likely by preventing induction of AICD of SEB-exposed cells in a post-toxin-binding fashion. Understanding the biology of Vpr's activities in this model may allow for new insight into potential mechanisms of hyperinflammatory disease and into Vpr pathobiology in the context of HIV infection.

Publication: Mol. Ther. 2005 Nov ;12(5)::910-21.
Publication Date: 2005 Nov
Study Author(s): Muthumani, Karuppiah;Choo, Andrew Y;Hwang, Daniel S;Dayes, Nathanael S;Chattergoon, Michael;Mayilvahanan, Shanmugam;Thieu, Khanh P;Buckley, Peter T;Emmanuel, Joann;Premkumar, Arumugam;Weiner, David B;
Institution: Department of Pathology and Laboratory Medicine, University of Pennsylvania School of Medicine, 505 Stellar Chance Building, 422 Curie Boulevard, Philadelphia, PA 19104, USA.
Shortcut link to this study:
The HIV-1 accessory protein Vpr exhibits many interesting features related to macrophage and T cell biology. As a viral protein or as a soluble molecule it can suppress immune cell activation and cytokine production in vitro in part by targeted inhibition of NF-kappaB. In this regard we sought to test its effects in vivo on an NF-kappaB-dependent immune pathway. We examined the activity of Vpr in a lethal toxin-mediated challenge model in mice. Intravenous delivery of Vpr was sufficient to protect mice from lethal challenge with staphylococcal endotoxin B (SEB). Furthermore, Vpr protected host CD4+ T cells from in vivo depletion likely by preventing induction of AICD of SEB-exposed cells in a post-toxin-binding fashion. Understanding the biology of Vpr's activities in this model may allow for new insight into potential mechanisms of hyperinflammatory disease and into Vpr pathobiology in the context of HIV infection.
PMID: 16006193

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