0 7 Studies study NNS 8 12 into into IN 13 16 the the DT 17 23 effect effect NN 24 26 of of IN 27 35 tyrosine tyrosine NN 36 47 phosphatase phosphatase NN 48 57 inhibitor inhibitor NN 58 70 phenylarsine phenylarsine NN 71 76 oxide oxide NN 77 79 on on IN 80 88 NFkappaB NFkappaB NNP 89 99 activation activation NN 100 102 in in IN 103 104 T t NN 105 116 lymphocytes lymphocyte NNS 117 123 during during IN 124 129 aging aging NN 129 130 : : : 131 139 evidence evidence NN 140 143 for for IN 144 151 altered altered JJ 152 165 IkappaB-alpha IkappaB-alpha NNP 166 181 phosphorylation phosphorylation NN 182 185 and and CC 186 197 degradation degradation NN 197 198 . . . 200 207 Nuclear nuclear JJ 208 214 Factor factor NN 215 220 kappa kappa NN 221 222 B B NNP 223 224 ( ( ( 224 232 NFkappaB NFkappaB NNP 232 233 ) ) ) 234 236 is be VBZ 237 238 a a DT 239 247 critical critical JJ 248 257 regulator regulator NN 258 260 of of IN 261 268 several several JJ 269 274 genes gene NNS 275 283 involved involve VBN 284 286 in in IN 287 293 immune immune JJ 294 297 and and CC 298 310 inflammatory inflammatory JJ 311 320 responses response NNS 320 321 . . . 322 331 Treatment Treatment NNP 332 334 of of IN 335 336 T t NN 337 342 cells cell NNS 343 347 with with IN 348 349 a a DT 350 357 variety variety NN 358 360 of of IN 361 368 stimuli stimulus NNS 368 369 , , , 370 379 including include VBG 380 389 TNF-alpha TNF-alpha NNP 389 390 , , , 391 396 leads lead VBZ 397 399 to to TO 400 403 the the DT 404 417 translocation translocation NN 418 420 of of IN 421 424 the the DT 425 431 active active JJ 432 438 p65-50 p65-50 NN 439 450 heterodimer heterodimer NN 451 453 to to TO 454 457 the the DT 458 465 nucleus nucleus NN 465 466 , , , 467 473 albeit albeit IN 474 476 at at IN 477 478 a a DT 479 484 lower low JJR 485 490 level level NN 491 493 in in IN 494 495 T t NN 496 501 cells cell NNS 502 506 from from IN 507 510 the the DT 511 518 elderly elderly JJ 518 519 . . . 520 522 We we PRP 523 534 demonstrate demonstrate VBP 535 539 here here RB 540 544 that that IN 545 557 pretreatment pretreatment NN 558 562 with with IN 563 566 PAO PAO NNP 567 574 results result VBZ 575 577 in in IN 578 581 the the DT 582 592 inhibition inhibition NN 593 595 of of IN 596 604 NFkappaB NFkappaB NNP 605 614 induction induction NN 615 617 in in IN 618 627 TNF-alpha TNF-alpha NNP 628 635 treated treated JJ 636 637 T t NN 638 643 cells cell NNS 643 644 , , , 645 655 suggesting suggest VBG 656 657 a a DT 658 662 role role NN 663 666 for for IN 667 680 PAO-sensitive pao-sensitive JJ 681 692 phosphatase phosphatase NN 693 695 in in IN 696 699 the the DT 700 710 activation activation NN 711 713 of of IN 714 717 the the DT 718 726 NFkappaB nfkappab NN 727 730 via via IN 731 735 this this DT 736 743 pathway pathway NN 744 746 in in IN 747 752 human human JJ 753 754 T t NN 755 760 cells cell NNS 760 761 . . . 762 773 Furthermore furthermore RB 773 774 , , , 775 777 it it PRP 778 790 demonstrates demonstrate VBZ 791 795 that that IN 796 801 aging aging NN 802 806 does do VBZ 807 810 not not RB 811 820 influence influence VB 821 824 the the DT 825 836 sensitivity sensitivity NN 837 839 of of IN 840 844 this this DT 845 856 phosphatase phosphatase NN 856 857 . . . 858 867 Treatment Treatment NNP 868 872 with with IN 873 876 DMP DMP NNP 877 882 prior prior JJ 883 885 to to TO 886 895 treatment treatment NN 896 900 with with IN 901 904 PAO PAO NNP 905 908 and and CC 909 912 TNF TNF NNP 913 922 abolishes abolish VBZ 923 926 the the DT 927 937 inhibition inhibition NN 938 945 induced induce VBN 946 948 by by IN 949 952 PAO PAO NNP 952 953 , , , 954 956 in in IN 957 958 T t NN 959 964 cells cell NNS 965 969 from from IN 970 974 both both CC 975 980 young young JJ 981 984 and and CC 985 988 old old JJ 989 995 donors donor NNS 995 996 , , , 997 1002 alike alike RB 1002 1003 . . . 1004 1011 Finally finally RB 1011 1012 , , , 1013 1015 we we PRP 1016 1027 demonstrate demonstrate VBP 1028 1032 that that IN 1033 1034 a a DT 1035 1042 failure failure NN 1043 1045 to to TO 1046 1053 degrade degrade VB 1054 1067 IkappaB-alpha IkappaB-alpha NNP 1068 1070 in in IN 1071 1079 cytosols cytosol NNS 1080 1082 of of IN 1083 1094 TNF-treated tnf-treated JJ 1095 1096 T t NN 1097 1102 cells cell NNS 1103 1113 pretreated pretreate VBN 1114 1118 with with IN 1119 1122 PAO PAO NNP 1123 1125 is be VBZ 1126 1129 due due IN 1130 1132 to to TO 1133 1136 its its PRP$ 1137 1149 interference interference NN 1150 1154 with with IN 1155 1158 the the DT 1159 1174 phosphorylation phosphorylation NN 1175 1177 of of IN 1178 1191 IkappaB-alpha IkappaB-alpha NNP 1192 1195 and and CC 1196 1199 not not RB 1200 1203 due due JJ 1204 1206 to to TO 1207 1210 its its PRP$ 1211 1221 inhibitory inhibitory JJ 1222 1228 effect effect NN 1229 1231 on on IN 1232 1243 proteasomal proteasomal JJ 1244 1255 degradation degradation NN 1255 1256 . . . 1257 1262 These these DT 1263 1267 data datum NNS 1268 1280 collectively collectively RB 1281 1288 suggest suggest VBP 1289 1293 that that IN 1294 1297 PAO PAO NNP 1298 1308 interferes interfere VBZ 1309 1313 with with IN 1314 1317 the the DT 1318 1333 phosphorylation phosphorylation NN 1334 1337 and and CC 1338 1341 the the DT 1342 1351 regulated regulate VBN 1352 1363 degradation degradation NN 1364 1366 of of IN 1367 1380 IkappaB-alpha IkappaB-alpha NNP 1380 1381 , , , 1382 1389 induced induce VBN 1390 1392 by by IN 1393 1396 TNF TNF NNP 1396 1397 , , , 1398 1405 without without IN 1406 1415 affecting affect VBG 1416 1419 the the DT 1420 1432 chymotryptic chymotryptic JJ 1433 1441 activity activity NN 1442 1444 of of IN 1445 1448 the the DT 1449 1459 proteasome proteasome NN 1459 1460 , , , 1461 1472 independent independent JJ 1473 1475 of of IN 1476 1479 age age NN 1479 1480 . . .