0 14 Retinoblastoma retinoblastoma NN 15 22 protein protein NN 23 33 expression expression NN 34 39 leads lead VBZ 40 42 to to TO 43 50 reduced reduce VBN 51 56 Oct-1 oct-1 NN 57 60 DNA dna NN 61 68 binding binding NN 69 77 activity activity NN 78 81 and and CC 82 90 enhances enhance VBZ 91 104 interleukin-8 interleukin-8 NN 105 115 expression expression NN 115 116 . . . 118 123 Tumor tumor NN 124 128 cell cell NN 129 134 lines line NNS 135 139 with with IN 140 141 a a DT 142 151 defective defective JJ 152 166 retinoblastoma retinoblastoma NN 167 171 gene gene NN 172 175 are be VBP 176 182 unable unable JJ 183 185 to to TO 186 196 transcribe transcribe VB 197 200 the the DT 201 204 HLA HLA NNP 205 210 class class NN 211 213 II ii CD 214 219 genes gene NNS 220 222 in in IN 223 231 response response NN 232 234 to to TO 235 244 IFN-gamma IFN-gamma NNP 245 254 treatment treatment NN 254 255 , , , 256 259 and and CC 260 274 reconstitution reconstitution NN 275 277 of of IN 278 288 functional functional JJ 289 291 Rb Rb NNP 292 299 rescues rescue VBZ 300 317 IFN-gamma-induced ifn-gamma-induced JJ 318 323 class class NN 324 326 II ii CD 327 331 gene gene NN 332 342 expression expression NN 342 343 . . . 344 351 However however RB 351 352 , , , 353 356 the the DT 357 366 molecular molecular JJ 367 376 mechanism mechanism NN 377 379 of of IN 380 382 Rb Rb NNP 383 389 rescue rescue NN 390 392 of of IN 393 396 the the DT 397 402 class class NN 403 405 II ii CD 406 411 genes gene NNS 412 414 is be VBZ 415 422 unknown unknown JJ 422 423 . . . 424 426 We we PRP 427 431 have have VBP 432 440 examined examine VBN 441 444 the the DT 445 451 effect effect NN 452 454 of of IN 455 457 Rb Rb NNP 458 468 expression expression NN 469 471 on on IN 472 475 the the DT 476 486 activation activation NN 487 489 of of IN 490 493 the the DT 494 502 promoter promoter NN 503 506 for for IN 507 514 HLA-DRA HLA-DRA NNP 514 515 , , , 516 519 the the DT 520 529 prototype prototype NN 530 535 class class NN 536 538 II ii CD 539 543 gene gene NN 543 544 . . . 545 550 Oct-1 Oct-1 NNP 550 551 , , , 552 553 a a DT 554 557 POU POU NNP 558 564 domain domain NN 565 578 transcription transcription NN 579 585 factor factor NN 585 586 , , , 587 590 was be VBD 591 601 identified identify VBN 602 604 as as IN 605 606 a a DT 607 616 repressor repressor NN 617 619 of of IN 620 627 HLA-DRA HLA-DRA NNP 628 636 promoter promoter NN 637 645 activity activity NN 646 648 in in IN 649 652 the the DT 653 665 Rb-defective rb-defective JJ 666 671 cells cell NNS 671 672 . . . 673 675 Rb Rb NNP 676 686 expression expression NN 687 690 led lead VBD 691 693 to to TO 694 709 phosphorylation phosphorylation NN 710 712 of of IN 713 718 Oct-1 oct-1 NN 718 719 , , , 720 724 thus thus RB 725 734 relieving relieve VBG 735 738 its its PRP$ 739 749 repressive repressive JJ 750 756 effect effect NN 756 757 . . . 758 763 Oct-1 Oct-1 NNP 764 767 has have VBZ 768 772 also also RB 773 777 been be VBN 778 783 shown show VBN 784 786 to to TO 787 794 repress repress VB 795 806 interleukin interleukin NN 807 808 8 8 CD 809 817 promoter promoter NN 818 826 activity activity NN 826 827 . . . 828 838 Consistent consistent JJ 839 843 with with IN 844 851 reduced reduce VBN 852 858 levels level NNS 859 861 of of IN 862 867 Oct-1 oct-1 NN 868 871 DNA DNA NNP 872 879 binding binding NN 880 888 activity activity NN 889 891 in in IN 892 895 the the DT 896 910 Rb-transformed rb-transformed JJ 911 915 cell cell NN 916 921 lines line NNS 921 922 , , , 923 934 interleukin interleukin NN 935 936 8 8 CD 937 947 expression expression NN 948 950 is be VBZ 951 957 higher high JJR 958 960 in in IN 961 966 these these DT 967 971 cell cell NN 972 977 lines line NNS 977 978 . . .