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char = M;code = 77
char = C;code = 67
char = A;code = 65
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char = g;code = 103
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char = l;code = 108
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char = o;code = 111
char = p;code = 112
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char = o;code = 111
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char = i;code = 105
char = s;code = 115
char = ;code = 32
char = d;code = 100
char = u;code = 117
char = r;code = 114
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = m;code = 109
char = a;code = 97
char = m;code = 109
char = m;code = 109
char = a;code = 97
char = r;code = 114
char = y;code = 121
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char = l;code = 108
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char = d;code = 100
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = v;code = 118
char = o;code = 111
char = l;code = 108
char = u;code = 117
char = t;code = 116
char = i;code = 105
char = o;code = 111
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char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = p;code = 112
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char = d;code = 100
char = i;code = 105
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char = t;code = 116
char = s;code = 115
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char = o;code = 111
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char = o;code = 111
char = m;code = 109
char = e;code = 101
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char = i;code = 105
char = n;code = 110
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char = c;code = 99
char = a;code = 97
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char = c;code = 99
char = e;code = 101
char = r;code = 114
char = .;code = 46
result sql = PMCA2 regulates apoptosis during mammary gland involution and predicts outcome in breast cancer.
PMCA2 regulates apoptosis during mammary gland involution and predicts outcome in breast cancer.
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char = ,;code = 44
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char = m;code = 109
char = m;code = 109
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char = l;code = 108
char = l;code = 108
char = ;code = 32
char = (;code = 40
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char = C;code = 67
char = );code = 41
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char = C;code = 67
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char = m;code = 109
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char = e;code = 101
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char = a;code = 97
char = l;code = 108
char = c;code = 99
char = i;code = 105
char = u;code = 117
char = m;code = 109
char = -;code = 45
char = A;code = 65
char = T;code = 84
char = P;code = 80
char = a;code = 97
char = s;code = 115
char = e;code = 101
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char = 2;code = 50
char = ;code = 32
char = (;code = 40
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char = C;code = 67
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char = c;code = 99
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char = p;code = 112
char = o;code = 111
char = r;code = 114
char = t;code = 116
char = s;code = 115
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = l;code = 108
char = c;code = 99
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char = u;code = 117
char = m;code = 109
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char = d;code = 100
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char = m;code = 109
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char = s;code = 115
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char = z;code = 122
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char = E;code = 69
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char = s;code = 115
char = ;code = 32
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result sql = After lactation, weaning causes mammary epithelial cell (MEC) apoptosis. MECs express the plasma membrane calcium-ATPase 2 (PMCA2), which transports calcium across the apical surface of the cells into milk. Here we show that PMCA2 is down-regulated early in mammary involution associated with changes in MEC shape. We demonstrate that loss of PMCA2 expression raises intracellular calcium levels and sensitizes MECs to apoptosis. In contrast, overexpression of PMCA2 in T47D breast cancer cells lowers intracellular calcium and protects them from apoptosis. Finally, we show that high PMCA2 expression in breast cancers is associated with poor outcome. We conclude that loss of PMCA2 expression at weaning triggers apoptosis by causing cellular calcium crisis. PMCA2 overexpression, on the other hand, may play a role in breast cancer progression by conferring resistance to apoptosis.

Publication: Proc. Natl. Acad. Sci. U.S.A. 2010 Jun 22 ;107(25)::11405-10. :doi: 10.1073/pnas.0911186107.
Publication Date: 2010 Jun 22
Study Author(s): VanHouten, Joshua;Sullivan, Catherine;Bazinet, Caroline;Ryoo, Tom;Camp, Robert;Rimm, David L;Chung, Gina;Wysolmerski, John;
Institution: Section of Endocrinology and Metabolism, Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06520, USA.
Shortcut link to this study:
After lactation, weaning causes mammary epithelial cell (MEC) apoptosis. MECs express the plasma membrane calcium-ATPase 2 (PMCA2), which transports calcium across the apical surface of the cells into milk. Here we show that PMCA2 is down-regulated early in mammary involution associated with changes in MEC shape. We demonstrate that loss of PMCA2 expression raises intracellular calcium levels and sensitizes MECs to apoptosis. In contrast, overexpression of PMCA2 in T47D breast cancer cells lowers intracellular calcium and protects them from apoptosis. Finally, we show that high PMCA2 expression in breast cancers is associated with poor outcome. We conclude that loss of PMCA2 expression at weaning triggers apoptosis by causing cellular calcium crisis. PMCA2 overexpression, on the other hand, may play a role in breast cancer progression by conferring resistance to apoptosis.
PMID: 20534448

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