Promyelocytic leukaemia protein links DNA damage response and repair to hepatitis B virus-related hepatocarcinogenesis

DNA damage response and repair pathways are important barriers to carcinogenesis. Here, we show that promyelocytic leukaemia (PML, also known as TRIM19), involved in sensing DNA damage and executing homologous recombination repair, is down‐regulated in non‐tumour liver cells surrounding hepatitis B...

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Veröffentlicht in:The Journal of pathology 2013-08, Vol.230 (4), p.377-387
Hauptverfasser: Chung, Yih-Lin, Wu, Mei-Ling
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description DNA damage response and repair pathways are important barriers to carcinogenesis. Here, we show that promyelocytic leukaemia (PML, also known as TRIM19), involved in sensing DNA damage and executing homologous recombination repair, is down‐regulated in non‐tumour liver cells surrounding hepatitis B virus (HBV)‐related hepatocellular carcinoma (HCC). No PML mutation or deletion was found in HBV‐infected liver or HCC cells. Immunohistochemical analysis of liver biopsies from patients with breast or liver cancer and HBV reactivation after chemotherapy revealed PML up‐regulation and HBV exacerbation in normal liver tissue in response to DNA damage (functional PML), PML down‐regulation in HCC peritumour cells associated with high HBsAg accumulation and low HBV replication activity (suppressive PML), and heterogeneous nuclear PML expression in HCC cells that lost HBV DNA and HBsAg and were non‐reactive to DNA damage (dysregulated PML). Loss of PML in HBsAg‐transgenic mice promoted chromosome breaks in liver cells and accelerated the accumulation of body and liver fat and the development of a liver steatosis–dysplasia–adenoma–carcinoma sequence in an inflammation‐independent and male‐predominant manner, compared to PML knock‐out or HBsAg‐transgenic mice during the same time period. These results indicate that PML deficiency facilitates genomic instability and promotes HBsAg‐related hepatocarcinogenesis, which also involves androgen and lipid metabolism. These findings uncover a novel PML link between HBV‐related tumourigenesis, DNA repair, and metabolism. Copyright © 2013 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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Here, we show that promyelocytic leukaemia (PML, also known as TRIM19), involved in sensing DNA damage and executing homologous recombination repair, is down‐regulated in non‐tumour liver cells surrounding hepatitis B virus (HBV)‐related hepatocellular carcinoma (HCC). No PML mutation or deletion was found in HBV‐infected liver or HCC cells. Immunohistochemical analysis of liver biopsies from patients with breast or liver cancer and HBV reactivation after chemotherapy revealed PML up‐regulation and HBV exacerbation in normal liver tissue in response to DNA damage (functional PML), PML down‐regulation in HCC peritumour cells associated with high HBsAg accumulation and low HBV replication activity (suppressive PML), and heterogeneous nuclear PML expression in HCC cells that lost HBV DNA and HBsAg and were non‐reactive to DNA damage (dysregulated PML). Loss of PML in HBsAg‐transgenic mice promoted chromosome breaks in liver cells and accelerated the accumulation of body and liver fat and the development of a liver steatosis–dysplasia–adenoma–carcinoma sequence in an inflammation‐independent and male‐predominant manner, compared to PML knock‐out or HBsAg‐transgenic mice during the same time period. These results indicate that PML deficiency facilitates genomic instability and promotes HBsAg‐related hepatocarcinogenesis, which also involves androgen and lipid metabolism. These findings uncover a novel PML link between HBV‐related tumourigenesis, DNA repair, and metabolism. Copyright © 2013 Pathological Society of Great Britain and Ireland. 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Pathol</addtitle><description>DNA damage response and repair pathways are important barriers to carcinogenesis. Here, we show that promyelocytic leukaemia (PML, also known as TRIM19), involved in sensing DNA damage and executing homologous recombination repair, is down‐regulated in non‐tumour liver cells surrounding hepatitis B virus (HBV)‐related hepatocellular carcinoma (HCC). No PML mutation or deletion was found in HBV‐infected liver or HCC cells. Immunohistochemical analysis of liver biopsies from patients with breast or liver cancer and HBV reactivation after chemotherapy revealed PML up‐regulation and HBV exacerbation in normal liver tissue in response to DNA damage (functional PML), PML down‐regulation in HCC peritumour cells associated with high HBsAg accumulation and low HBV replication activity (suppressive PML), and heterogeneous nuclear PML expression in HCC cells that lost HBV DNA and HBsAg and were non‐reactive to DNA damage (dysregulated PML). Loss of PML in HBsAg‐transgenic mice promoted chromosome breaks in liver cells and accelerated the accumulation of body and liver fat and the development of a liver steatosis–dysplasia–adenoma–carcinoma sequence in an inflammation‐independent and male‐predominant manner, compared to PML knock‐out or HBsAg‐transgenic mice during the same time period. These results indicate that PML deficiency facilitates genomic instability and promotes HBsAg‐related hepatocarcinogenesis, which also involves androgen and lipid metabolism. These findings uncover a novel PML link between HBV‐related tumourigenesis, DNA repair, and metabolism. Copyright © 2013 Pathological Society of Great Britain and Ireland. 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development</subject><subject>Hepatitis B virus - immunology</subject><subject>Hepatitis B virus - pathogenicity</subject><subject>hepatitis B virus surface antigen</subject><subject>hepatocellular carcinoma</subject><subject>Humans</subject><subject>Immunohistochemistry</subject><subject>Liver Neoplasms - chemically induced</subject><subject>Liver Neoplasms - drug therapy</subject><subject>Liver Neoplasms - genetics</subject><subject>Liver Neoplasms - metabolism</subject><subject>Liver Neoplasms - pathology</subject><subject>Liver Neoplasms - virology</subject><subject>Male</subject><subject>Mice</subject><subject>Mice, Inbred C57BL</subject><subject>Mice, Knockout</subject><subject>Mice, Transgenic</subject><subject>Nuclear Proteins - deficiency</subject><subject>Nuclear Proteins - genetics</subject><subject>Nuclear Proteins - metabolism</subject><subject>promyelocytic leukaemia protein</subject><subject>Promyelocytic Leukemia Protein</subject><subject>Sex Factors</subject><subject>Time Factors</subject><subject>Transcription Factors - deficiency</subject><subject>Transcription Factors - genetics</subject><subject>Transcription Factors - metabolism</subject><subject>Tumor Suppressor Proteins - deficiency</subject><subject>Tumor Suppressor Proteins - genetics</subject><subject>Tumor Suppressor Proteins - metabolism</subject><subject>Up-Regulation</subject><subject>Virus Activation</subject><subject>Virus Replication</subject><issn>0022-3417</issn><issn>1096-9896</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp1kU1vEzEQhi0EomnhwB9AlrjQw7b-Wu_6mLbQIEUlhyCOlteetG5211t7t5B_j6OEHpA4zYzmmVcz8yL0gZILSgi7HMz4cCGoKl-hGSVKFqpW8jWa5R4ruKDVCTpN6ZEQolRZvkUnjEtGSE1n6HkVQ7eDNtjd6C1uYdoa6LzBQwwj-B63vt8mfHM3x8505h5whDSEPgE2vcvFYHzEY8APORv96BO-ws8-TqmI0JoR3KETrInW9-Eeekg-vUNvNqZN8P4Yz9CPr1_W14ti-f322_V8WVjBRFkIZTdEGlNJzhSXyjhomNo4U3PmRKkcY7YuWS2bipp8Wq1c1QiubMMbC9zxM_T5oJvPeZogjbrzyULbmh7ClDQVomaM04pn9NM_6GOYYp-305SrWgrJZJmp8wNlY0gpwkYP0Xcm7jQlem-G3puh92Zk9uNRcWo6cC_k3-9n4PIA_PIt7P6vpFfz9eIoWRwmfBrh98uEiVstK16V-ufdrV7fLJZXakW14n8AR2KkYA</recordid><startdate>201308</startdate><enddate>201308</enddate><creator>Chung, Yih-Lin</creator><creator>Wu, Mei-Ling</creator><general>John Wiley &amp; 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Immunohistochemical analysis of liver biopsies from patients with breast or liver cancer and HBV reactivation after chemotherapy revealed PML up‐regulation and HBV exacerbation in normal liver tissue in response to DNA damage (functional PML), PML down‐regulation in HCC peritumour cells associated with high HBsAg accumulation and low HBV replication activity (suppressive PML), and heterogeneous nuclear PML expression in HCC cells that lost HBV DNA and HBsAg and were non‐reactive to DNA damage (dysregulated PML). Loss of PML in HBsAg‐transgenic mice promoted chromosome breaks in liver cells and accelerated the accumulation of body and liver fat and the development of a liver steatosis–dysplasia–adenoma–carcinoma sequence in an inflammation‐independent and male‐predominant manner, compared to PML knock‐out or HBsAg‐transgenic mice during the same time period. These results indicate that PML deficiency facilitates genomic instability and promotes HBsAg‐related hepatocarcinogenesis, which also involves androgen and lipid metabolism. These findings uncover a novel PML link between HBV‐related tumourigenesis, DNA repair, and metabolism. Copyright © 2013 Pathological Society of Great Britain and Ireland. Published by John Wiley &amp; Sons, Ltd.</abstract><cop>Chichester, UK</cop><pub>John Wiley &amp; Sons, Ltd</pub><pmid>23620081</pmid><doi>10.1002/path.4195</doi><tpages>11</tpages></addata></record>
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subjects Adiposity
Androgens
Animals
Antibiotics, Antineoplastic - therapeutic use
Biomarkers - blood
Biopsy
Carcinoma, Hepatocellular - chemically induced
Carcinoma, Hepatocellular - drug therapy
Carcinoma, Hepatocellular - genetics
Carcinoma, Hepatocellular - metabolism
Carcinoma, Hepatocellular - pathology
Carcinoma, Hepatocellular - virology
Cell Transformation, Viral
Diethylnitrosamine
Disease Models, Animal
DNA Damage
DNA damage response and repair
DNA Repair
Doxorubicin - therapeutic use
Fatty Liver - metabolism
Fatty Liver - pathology
Fatty Liver - virology
Female
Genomic Instability
Hepatitis B - complications
Hepatitis B - diagnosis
Hepatitis B - genetics
Hepatitis B Surface Antigens - blood
Hepatitis B Surface Antigens - genetics
Hepatitis B virus
Hepatitis B virus - genetics
Hepatitis B virus - growth & development
Hepatitis B virus - immunology
Hepatitis B virus - pathogenicity
hepatitis B virus surface antigen
hepatocellular carcinoma
Humans
Immunohistochemistry
Liver Neoplasms - chemically induced
Liver Neoplasms - drug therapy
Liver Neoplasms - genetics
Liver Neoplasms - metabolism
Liver Neoplasms - pathology
Liver Neoplasms - virology
Male
Mice
Mice, Inbred C57BL
Mice, Knockout
Mice, Transgenic
Nuclear Proteins - deficiency
Nuclear Proteins - genetics
Nuclear Proteins - metabolism
promyelocytic leukaemia protein
Promyelocytic Leukemia Protein
Sex Factors
Time Factors
Transcription Factors - deficiency
Transcription Factors - genetics
Transcription Factors - metabolism
Tumor Suppressor Proteins - deficiency
Tumor Suppressor Proteins - genetics
Tumor Suppressor Proteins - metabolism
Up-Regulation
Virus Activation
Virus Replication
title Promyelocytic leukaemia protein links DNA damage response and repair to hepatitis B virus-related hepatocarcinogenesis
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