0 7 Mitogen Mitogen NNP 8 19 stimulation stimulation NN 20 22 of of IN 23 30 T-cells T-cell NNP 31 40 increases increase VBZ 41 46 c-Fos c-fos NN 47 50 and and CC 51 56 c-Jun c-jun NN 57 64 protein protein NN 65 71 levels level NNS 71 72 , , , 73 77 AP-1 ap-1 NN 78 85 binding binding NN 86 89 and and CC 90 94 AP-1 ap-1 NN 95 110 transcriptional transcriptional JJ 111 119 activity activity NN 119 120 . . . 122 124 We we PRP 125 129 have have VBP 130 138 analysed analyse VBN 139 142 the the DT 143 149 effect effect NN 150 152 of of IN 153 162 mitogenic mitogenic JJ 163 170 lectins lectin NNS 171 173 on on IN 174 179 c-Fos c-fos NN 180 183 and and CC 184 189 c-Jun c-jun NN 190 197 protein protein NN 198 204 levels level NNS 205 207 as as RB 208 212 well well RB 213 215 as as IN 216 218 on on IN 219 228 activator activator NN 229 238 protein-1 protein-1 NN 239 240 ( ( ( 240 244 AP-1 ap-1 NN 244 245 ) ) ) 246 253 binding binding NN 254 257 and and CC 258 266 enhancer enhancer NN 267 275 activity activity NN 276 278 in in IN 279 285 Jurkat Jurkat NNP 286 293 T-cells T-cell NNP 293 294 . . . 295 299 Both both CC 300 305 c-Fos c-fos NN 306 309 and and CC 310 315 c-Jun c-jun NN 316 323 protein protein NN 324 330 levels level NNS 331 335 were be VBD 336 345 increased increase VBN 346 351 after after IN 352 355 Con con NN 356 357 A A NNP 358 361 and and CC 362 365 PHA PHA NNP 366 377 stimulation stimulation NN 377 378 . . . 379 384 Since since IN 385 391 T-cell t-cell NN 392 403 stimulation stimulation NN 404 413 increases increase VBZ 414 418 both both CC 419 432 intracellular intracellular JJ 433 437 Ca2+ ca2+ NN 438 441 and and CC 442 446 cAMP camp NN 447 453 levels level NNS 454 457 and and CC 458 467 activates activate VBZ 468 475 protein protein NN 476 482 kinase kinase NNP 483 484 C C NNP 485 486 ( ( ( 486 489 PKC PKC NNP 489 490 ) ) ) 490 491 , , , 492 495 the the DT 496 504 possible possible JJ 505 516 involvement involvement NN 517 519 of of IN 520 525 these these DT 526 539 intracellular intracellular JJ 540 550 messengers messenger NNS 551 553 in in IN 554 559 c-Fos c-fos NN 560 563 and and CC 564 569 c-Jun c-jun NN 570 579 induction induction NN 580 583 was be VBD 584 590 tested test VBN 590 591 . . . 592 595 PMA PMA NNP 595 596 , , , 597 602 which which WDT 603 611 directly directly RB 612 621 activates activate VBZ 622 625 PKC PKC NNP 625 626 , , , 627 635 mimicked mimic VBD 636 639 the the DT 640 646 effect effect NN 647 649 of of IN 650 653 the the DT 654 661 lectins lectin NNS 662 664 on on IN 665 670 c-Fos c-fos NN 671 674 and and CC 675 680 c-Jun c-jun NN 680 681 , , , 682 685 but but CC 686 695 elevation elevation NN 696 698 of of IN 699 705 either either CC 706 719 intracellular intracellular JJ 720 724 Ca2+ ca2+ NN 725 727 or or CC 728 732 cAMP camp NN 733 739 levels level NNS 740 743 had have VBD 744 750 little little JJ 751 753 or or CC 754 756 no no DT 757 763 effect effect NN 763 764 . . . 765 768 The the DT 769 784 mitogen-induced mitogen-induced JJ 785 793 increase increase NN 794 796 of of IN 797 802 c-Fos c-fos NN 803 806 and and CC 807 812 c-Jun c-jun NN 813 829 immunoreactivity immunoreactivity NN 830 833 was be VBD 834 843 inhibited inhibit VBN 844 846 by by IN 847 850 H-7 H-7 NNP 850 851 , , , 852 853 a a DT 854 860 kinase kinase NNP 861 870 inhibitor inhibitor NN 871 875 with with IN 876 886 relatively relatively RB 887 891 high high JJ 892 903 specificity specificity NN 904 907 for for IN 908 911 PKC PKC NNP 911 912 , , , 913 916 and and CC 917 921 less less RBR 922 933 efficiently efficiently RB 934 936 by by IN 937 940 H-8 h-8 NN 940 941 , , , 942 943 a a DT 944 956 structurally structurally RB 957 964 related related JJ 965 971 kinase kinase NNP 972 981 inhibitor inhibitor NN 982 986 less less RBR 987 993 active active JJ 994 996 on on IN 997 1000 PKC PKC NNP 1000 1001 , , , 1002 1005 but but CC 1006 1010 more more RBR 1011 1017 active active JJ 1018 1020 on on IN 1021 1027 cyclic cyclic JJ 1028 1048 nucleotide-dependent nucleotide-dependent JJ 1049 1056 kinases kinase NNS 1056 1057 . . . 1058 1061 Con con NN 1062 1063 A a NN 1064 1075 stimulation stimulation NN 1076 1079 was be VBD 1080 1085 found find VBN 1086 1088 to to TO 1089 1097 increase increase VB 1098 1102 both both CC 1103 1110 binding binding NN 1111 1113 of of IN 1114 1118 AP-1 ap-1 NN 1119 1121 to to TO 1122 1125 the the DT 1126 1130 AP-1 ap-1 NN 1131 1140 consensus consensus NN 1141 1149 sequence sequence NN 1149 1150 , , , 1151 1154 TRE TRE NNP 1154 1155 , , , 1156 1159 and and CC 1160 1164 AP-1 ap-1 NN 1165 1173 enhancer enhancer NN 1174 1182 activity activity NN 1182 1183 , , , 1184 1186 in in IN 1187 1193 Jurkat Jurkat NNP 1194 1199 cells cell NNS 1199 1200 . . . 1201 1204 PMA PMA NNP 1205 1208 was be VBD 1209 1213 also also RB 1214 1219 found find VBN 1220 1222 to to TO 1223 1231 increase increase VB 1232 1235 the the DT 1236 1240 AP-1 ap-1 NN 1241 1249 enhancer enhancer NN 1250 1258 activity activity NN 1258 1259 , , , 1260 1267 whereas whereas IN 1268 1277 elevation elevation NN 1278 1280 of of IN 1281 1285 Ca2+ Ca2+ NNP 1286 1288 or or CC 1289 1293 cAMP cAMP NNP 1294 1297 had have VBD 1298 1302 only only RB 1303 1308 minor minor JJ 1309 1316 effects effect NNS 1316 1317 . . . 1318 1320 We we PRP 1321 1329 conclude conclude VBP 1330 1334 that that IN 1335 1346 stimulation stimulation NN 1347 1351 with with IN 1352 1361 mitogenic mitogenic JJ 1362 1369 lectins lectin NNS 1370 1372 is be VBZ 1373 1383 sufficient sufficient JJ 1384 1386 to to TO 1387 1395 increase increase VB 1396 1400 both both CC 1401 1406 c-Fos c-fos NN 1407 1410 and and CC 1411 1416 c-Jun c-jun NN 1417 1424 protein protein NN 1425 1431 levels level NNS 1431 1432 , , , 1433 1437 AP-1 ap-1 NN 1438 1445 binding binding NN 1446 1449 and and CC 1450 1454 AP-1 ap-1 NN 1455 1463 enhancer enhancer NN 1464 1472 activity activity NN 1473 1475 in in IN 1476 1482 Jurkat Jurkat NNP 1483 1488 cells cell NNS 1489 1492 and and CC 1493 1497 that that IN 1498 1502 they they PRP 1503 1506 act act VBP 1507 1510 via via IN 1511 1521 mechanisms mechanism NNS 1522 1526 that that WDT 1527 1532 could could MD 1533 1540 involve involve VB 1541 1544 the the DT 1545 1555 activation activation NN 1556 1558 of of IN 1559 1562 PKC PKC NNP 1562 1563 . . .