PMID- 17615358 OWN - NLM STAT- MEDLINE DCOM- 20070725 LR - 20220606 IS - 1095-9203 (Electronic) IS - 0036-8075 (Linking) VI - 317 IP - 5834 DP - 2007 Jul 6 TI - Gender disparity in liver cancer due to sex differences in MyD88-dependent IL-6 production. PG - 121-4 AB - Hepatocellular carcinoma (HCC), the most common liver cancer, occurs mainly in men. Similar gender disparity is seen in mice given a chemical carcinogen, diethylnitrosamine (DEN). DEN administration caused greater increases in serum interleukin-6 (IL-6) concentration in males than it did in females. Furthermore, ablation of IL-6 abolished the gender differences in hepatocarcinogenesis in mice. DEN exposure promoted production of IL-6 in Kupffer cells (KCs) in a manner dependent on the Toll-like receptor adaptor protein MyD88, ablation of which also protected male mice from DEN-induced hepatocarcinogenesis. Estrogen inhibited secretion of IL-6 from KCs exposed to necrotic hepatocytes and reduced circulating concentrations of IL-6 in DEN-treated male mice. We propose that estrogen-mediated inhibition of IL-6 production by KCs reduces liver cancer risk in females, and these findings may be used to prevent HCC in males. FAU - Naugler, Willscott E AU - Naugler WE AD - Laboratory of Gene Regulation and Signal Transduction, Department of Pharmacology and Cancer Center, University of California, San Diego, CA 93093, USA. FAU - Sakurai, Toshiharu AU - Sakurai T FAU - Kim, Sunhwa AU - Kim S FAU - Maeda, Shin AU - Maeda S FAU - Kim, Kyounghyun AU - Kim K FAU - Elsharkawy, Ahmed M AU - Elsharkawy AM FAU - Karin, Michael AU - Karin M LA - eng GR - T32 CA121938/CA/NCI NIH HHS/United States GR - CA118165/CA/NCI NIH HHS/United States GR - ES006376/ES/NIEHS NIH HHS/United States GR - ES004151/ES/NIEHS NIH HHS/United States GR - T32 DK007202/DK/NIDDK NIH HHS/United States GR - R01 CA118165/CA/NCI NIH HHS/United States GR - DK007202/DK/NIDDK NIH HHS/United States GR - R01 ES006376/ES/NIEHS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - United States TA - Science JT - Science (New York, N.Y.) JID - 0404511 RN - 0 (Interleukin-6) RN - 0 (Myd88 protein, mouse) RN - 0 (Myeloid Differentiation Factor 88) RN - 0 (RNA, Messenger) RN - 3IQ78TTX1A (Diethylnitrosamine) RN - 4TI98Z838E (Estradiol) RN - CL2T97X0V0 (Carbon Tetrachloride) SB - IM EIN - Science. 2009 Dec 4;326(5958):1346 CIN - Science. 2007 Jul 6;317(5834):51-2. PMID: 17615328 CIN - Science. 2007 Nov 23;318(5854):1239-40; author reply 1239-40. PMID: 18033865 MH - Animals MH - Carbon Tetrachloride/administration & dosage MH - Diethylnitrosamine/administration & dosage/metabolism MH - Estradiol/pharmacology MH - Female MH - Hepatocytes MH - Interleukin-6/blood/genetics/*metabolism MH - Kupffer Cells/*metabolism MH - Liver/metabolism/pathology MH - Liver Neoplasms, Experimental/chemically induced/immunology/*physiopathology MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Myeloid Differentiation Factor 88/*physiology MH - Necrosis MH - Ovariectomy MH - RNA, Messenger/genetics/metabolism MH - *Sex Characteristics EDAT- 2007/07/07 09:00 MHDA- 2007/07/26 09:00 CRDT- 2007/07/07 09:00 PHST- 2007/07/07 09:00 [pubmed] PHST- 2007/07/26 09:00 [medline] PHST- 2007/07/07 09:00 [entrez] AID - 317/5834/121 [pii] AID - 10.1126/science.1140485 [doi] PST - ppublish SO - Science. 2007 Jul 6;317(5834):121-4. doi: 10.1126/science.1140485.