0 8 Targeted target VBN 9 19 disruption disruption NN 20 22 of of IN 23 26 the the DT 27 32 MyD88 myd88 NN 33 37 gene gene NN 38 45 results result VBZ 46 48 in in IN 49 53 loss loss NN 54 56 of of IN 57 62 IL-1- IL-1- NNP 63 66 and and CC 67 81 IL-18-mediated il-18-mediated JJ 82 90 function function NN 90 91 . . . 93 98 MyD88 myd88 NN 98 99 , , , 100 110 originally originally RB 111 119 isolated isolate VBN 120 122 as as IN 123 124 a a DT 125 132 myeloid myeloid JJ 133 148 differentiation differentiation NN 149 156 primary primary JJ 157 165 response response NN 166 170 gene gene NN 170 171 , , , 172 174 is be VBZ 175 180 shown show VBN 181 183 to to TO 184 187 act act VB 188 190 as as IN 191 193 an an DT 194 201 adaptor adaptor NN 202 204 in in IN 205 218 interleukin-1 interleukin-1 NN 219 220 ( ( ( 220 224 IL-1 il-1 NN 224 225 ) ) ) 226 235 signaling signaling NN 236 238 by by IN 239 250 interacting interact VBG 251 255 with with IN 256 260 both both CC 261 264 the the DT 265 269 IL-1 il-1 NN 270 278 receptor receptor NN 279 286 complex complex NN 287 290 and and CC 291 295 IL-1 il-1 NN 296 315 receptor-associated receptor-associated JJ 316 322 kinase kinase NNP 323 324 ( ( ( 324 328 IRAK IRAK NNP 328 329 ) ) ) 329 330 . . . 331 335 Mice mouse NNS 336 345 generated generate VBN 346 348 by by IN 349 353 gene gene NN 354 363 targeting targeting NN 364 366 to to TO 367 371 lack lack VB 372 377 MyD88 myd88 NN 378 382 have have VBP 383 390 defects defect NNS 391 393 in in IN 394 395 T t NN 396 400 cell cell NN 401 414 proliferation proliferation NN 415 417 as as RB 418 422 well well RB 423 425 as as IN 426 435 induction induction NN 436 438 of of IN 439 444 acute acute JJ 445 450 phase phase NN 451 459 proteins protein NNS 460 463 and and CC 464 473 cytokines cytokine NNS 474 476 in in IN 477 485 response response NN 486 488 to to TO 489 493 IL-1 il-1 NN 493 494 . . . 495 504 Increases increase NNS 505 507 in in IN 508 524 interferon-gamma interferon-gamma NN 525 535 production production NN 536 539 and and CC 540 547 natural natural JJ 548 554 killer killer NN 555 559 cell cell NN 560 568 activity activity NN 569 571 in in IN 572 580 response response NN 581 583 to to TO 584 589 IL-18 il-18 NN 590 593 are be VBP 594 603 abrogated abrogate VBN 603 604 . . . 605 607 In in FW 608 612 vivo vivo FW 613 616 Th1 th1 NN 617 625 response response NN 626 628 is be VBZ 629 633 also also RB 634 642 impaired impaired JJ 642 643 . . . 644 655 Furthermore furthermore RB 655 656 , , , 657 670 IL-18-induced il-18-induced JJ 671 681 activation activation NN 682 684 of of IN 685 694 NF-kappaB NF-kappaB NNP 695 698 and and CC 699 704 c-Jun c-jun NN 705 715 N-terminal n-terminal JJ 716 722 kinase kinase NNP 723 724 ( ( ( 724 727 JNK JNK NNP 727 728 ) ) ) 729 731 is be VBZ 732 739 blocked block VBN 740 742 in in IN 743 751 MyD88-/- myd88-/- JJ 752 766 Th1-developing th1-developing NN 767 772 cells cell NNS 772 773 . . . 774 779 Taken take VBN 780 788 together together RB 788 789 , , , 790 795 these these DT 796 803 results result NNS 804 815 demonstrate demonstrate VBP 816 820 that that IN 821 826 MyD88 myd88 NN 827 829 is be VBZ 830 831 a a DT 832 840 critical critical JJ 841 850 component component NN 851 853 in in IN 854 857 the the DT 858 867 signaling signaling NN 868 875 cascade cascade NN 876 880 that that WDT 881 883 is be VBZ 884 892 mediated mediate VBN 893 895 by by IN 896 900 IL-1 il-1 NN 901 909 receptor receptor NN 910 912 as as RB 913 917 well well RB 918 920 as as IN 921 926 IL-18 il-18 NN 927 935 receptor receptor NN 935 936 . . .