0 4 MIP1 mip1 NN 5 10 alpha alpha NN 11 18 nuclear nuclear JJ 19 26 protein protein NN 27 28 ( ( ( 28 31 MNP MNP NNP 31 32 ) ) ) 32 33 , , , 34 35 a a DT 36 41 novel novel JJ 42 55 transcription transcription NN 56 62 factor factor NN 63 72 expressed express VBN 73 75 in in IN 76 89 hematopoietic hematopoietic JJ 90 95 cells cell NNS 96 100 that that WDT 101 103 is be VBZ 104 111 crucial crucial JJ 112 115 for for IN 116 129 transcription transcription NN 130 132 of of IN 133 136 the the DT 137 142 human human JJ 143 148 MIP-1 mip-1 NN 149 154 alpha alpha NN 155 159 gene gene NN 159 160 . . . 162 168 Murine murine JJ 169 179 macrophage macrophage NN 180 192 inflammatory inflammatory JJ 193 200 protein protein NN 201 202 1 1 CD 203 208 alpha alpha NN 209 210 ( ( ( 210 215 MIP-1 mip-1 NN 216 221 alpha alpha NN 221 222 ) ) ) 223 226 and and CC 227 230 its its PRP$ 231 236 human human JJ 237 247 equivalent equivalent NN 248 249 ( ( ( 249 254 GOS19 GOS19 NNP 254 255 , , , 256 260 LD78 LD78 NNP 260 261 , , , 262 264 or or CC 265 270 AT464 AT464 NNP 270 271 ) ) ) 272 275 are be VBP 276 283 members member NNS 284 286 of of IN 287 290 the the DT 291 295 -C-C -C-C NNP 296 302 family family NN 303 305 of of IN 306 326 low-molecular-weight low-molecular-weight JJ 327 337 chemokines chemokine NNS 337 338 . . . 339 347 Secreted secrete VBN 348 352 from from IN 353 362 activated activate VBN 363 364 T t NN 365 370 cells cell NNS 371 374 and and CC 375 386 macrophages macrophage NNS 386 387 , , , 388 392 bone bone NN 393 407 marrow-derived marrow-derived JJ 408 413 MIP-1 mip-1 NN 414 425 alpha/GOS19 alpha/gos19 NN 426 434 inhibits inhibit VBZ 435 444 primitive primitive JJ 445 458 hematopoietic hematopoietic JJ 459 463 stem stem NN 464 469 cells cell NNS 470 473 and and CC 474 481 appears appear VBZ 482 484 to to TO 485 487 be be VB 488 496 involved involve VBN 497 499 in in IN 500 503 the the DT 504 515 homeostatic homeostatic JJ 516 523 control control NN 524 526 of of IN 527 531 stem stem NN 532 536 cell cell NN 537 550 proliferation proliferation NN 550 551 . . . 552 554 It it PRP 555 559 also also RB 560 567 induces induce VBZ 568 578 chemotaxis chemotaxis NN 579 582 and and CC 583 595 inflammatory inflammatory JJ 596 605 responses response NNS 606 608 in in IN 609 615 mature mature JJ 616 620 cell cell NN 621 626 types type NNS 626 627 . . . 628 637 Therefore therefore RB 637 638 , , , 639 641 it it PRP 642 644 is be VBZ 645 654 important important JJ 655 657 to to TO 658 668 understand understand VB 669 672 the the DT 673 683 mechanisms mechanism NNS 684 689 which which WDT 690 697 control control VBP 698 701 the the DT 702 712 expression expression NN 713 715 of of IN 716 721 MIP-1 MIP-1 NNP 722 733 alpha/GOS19 alpha/gos19 NN 733 734 . . . 735 743 Previous previous JJ 744 748 work work NN 749 752 has have VBZ 753 758 shown show VBN 759 763 that that IN 764 766 in in IN 767 773 Jurkat Jurkat NNP 774 775 T t NN 776 781 cells cell NNS 781 782 , , , 783 784 a a DT 785 788 set set NN 789 791 of of IN 792 798 widely widely RB 799 808 expressed express VBN 809 822 transcription transcription NN 823 830 factors factor NNS 831 832 ( ( ( 832 835 the the DT 836 841 ICK-1 ick-1 NN 842 848 family family NN 848 849 ) ) ) 850 856 affect affect VBP 857 860 the the DT 861 866 GOS19 gos19 NN 867 875 promoter promoter NN 875 876 . . . 877 880 One one CD 881 887 member member NN 887 888 , , , 889 895 ICK-1A ICK-1A NNP 895 896 , , , 897 904 behaves behave VBZ 905 907 as as IN 908 909 a a DT 910 916 strong strong JJ 917 925 negative negative JJ 926 935 regulator regulator NN 935 936 . . . 937 939 In in IN 940 944 this this DT 945 958 communication communication NN 958 959 , , , 960 962 we we PRP 963 970 provide provide VBP 971 979 evidence evidence NN 980 984 that that IN 985 988 the the DT 989 996 pathway pathway NN 997 999 of of IN 1000 1009 induction induction NN 1010 1012 in in IN 1013 1016 the the DT 1017 1027 macrophage macrophage NN 1028 1032 cell cell NN 1033 1037 line line NN 1038 1042 U937 u937 NN 1043 1045 is be VBZ 1046 1055 different different JJ 1056 1060 from from IN 1061 1065 that that DT 1066 1068 in in IN 1069 1075 Jurkat Jurkat NNP 1076 1081 cells cell NNS 1081 1082 . . . 1083 1094 Furthermore furthermore RB 1094 1095 , , , 1096 1098 we we PRP 1099 1103 show show VBP 1104 1108 that that IN 1109 1112 the the DT 1113 1118 ICK-1 ick-1 NN 1119 1126 binding binding NN 1127 1131 site site NN 1132 1136 does do VBZ 1137 1140 not not RB 1141 1147 confer confer VB 1148 1156 negative negative JJ 1157 1167 regulation regulation NN 1168 1170 in in IN 1171 1175 U937 u937 NN 1176 1181 cells cell NNS 1181 1182 . . . 1183 1185 We we PRP 1186 1193 provide provide VBP 1194 1202 evidence evidence NN 1203 1206 for for IN 1207 1209 an an DT 1210 1220 additional additional JJ 1221 1228 binding bind VBG 1229 1233 site site NN 1233 1234 , , , 1235 1238 the the DT 1239 1244 MIP-1 mip-1 NN 1245 1250 alpha alpha NN 1251 1258 nuclear nuclear JJ 1259 1266 protein protein NN 1267 1268 ( ( ( 1268 1271 MNP MNP NNP 1271 1272 ) ) ) 1273 1277 site site NN 1277 1278 , , , 1279 1284 which which WDT 1285 1293 overlaps overlap VBZ 1294 1297 the the DT 1298 1303 ICK-1 ick-1 NN 1304 1308 site site NN 1308 1309 . . . 1310 1321 Interaction interaction NN 1322 1324 of of IN 1325 1332 nuclear nuclear JJ 1333 1341 extracts extract NNS 1342 1346 from from IN 1347 1354 various various JJ 1355 1359 cell cell NN 1360 1365 lines line NNS 1366 1369 and and CC 1370 1376 tissue tissue NN 1377 1381 with with IN 1382 1385 the the DT 1386 1389 MNP MNP NNP 1390 1394 site site NN 1395 1400 leads lead VBZ 1401 1403 to to TO 1404 1407 the the DT 1408 1417 formation formation NN 1418 1420 of of IN 1421 1435 fast-migrating fast-migrating JJ 1436 1447 protein-DNA protein-dna JJ 1448 1457 complexes complex NNS 1458 1462 with with IN 1463 1470 similar similar JJ 1471 1474 but but CC 1475 1483 distinct distinct JJ 1484 1499 electrophoretic electrophoretic JJ 1500 1510 mobilities mobility NNS 1510 1511 . . . 1512 1513 A a DT 1514 1522 mutation mutation NN 1523 1525 of of IN 1526 1529 the the DT 1530 1533 MNP MNP NNP 1534 1538 site site NN 1539 1544 which which WDT 1545 1549 does do VBZ 1550 1553 not not RB 1554 1562 abrogate abrogate VB 1563 1568 ICK-1 ick-1 NN 1569 1576 binding binding NN 1577 1588 inactivates inactivate VBZ 1589 1592 the the DT 1593 1600 GOS19.1 gos19.1 NN 1601 1609 promoter promoter NN 1610 1612 in in IN 1613 1617 U937 u937 NN 1618 1623 cells cell NNS 1624 1627 and and CC 1628 1635 reduces reduce VBZ 1636 1639 its its PRP$ 1640 1648 activity activity NN 1649 1651 by by IN 1652 1660 fourfold fourfold RB 1661 1663 in in IN 1664 1670 Jurkat Jurkat NNP 1671 1676 cells cell NNS 1676 1677 . . . 1678 1680 We we PRP 1681 1688 propose propose VBP 1689 1693 that that IN 1694 1697 the the DT 1698 1701 MNP MNP NNP 1702 1712 protein(s) protein(s) NNP 1713 1720 binding binding NN 1721 1723 at at IN 1724 1727 the the DT 1728 1731 MNP MNP NNP 1732 1736 site site NN 1737 1748 constitutes constitute VBZ 1749 1750 a a DT 1751 1756 novel novel JJ 1757 1770 transcription transcription NN 1771 1780 factor(s) factor(s) NN 1781 1790 expressed express VBN 1791 1793 in in IN 1794 1807 hematopoietic hematopoietic JJ 1808 1813 cells cell NNS 1813 1814 . . .