TY - JOUR AB - Apurinic/apyrimidinic endonucleases initiate repair at sites of base loss produced by many carcinogens and maintain genetic stability by repairing abasic sites produced spontaneously. We examined whether expression of the main apurinic endonuclease of human cells, encoded by the APE gene, might be decreased in malignant cells and thus potentiate an elevated mutation rate. Northern blotting and in situ hybridisation were used to quantitate the level of APE mRNA in various normal tissues and in 24 different brain tumors. There were no differences in APE expression among the normal tissues, or between malignant astrocytomas and meningiomas and the surrounding normal brain tissues. This suggests that diminished expression of the apurinic endonuclease does not underly the induction of these cancers, or explain clinical variations in presentation and response to treatment. AD - HARVARD UNIV,SCH PUBL HLTH,DEPT MOLEC & CELLULAR TOXICOL,BOSTON,MA 02115. HARVARD UNIV,SCH MED,JOINT CTR RADIAT THERAPY,BOSTON,MA 02115. HARVARD UNIV,SCH MED,CTR BLOOD RES,BOSTON,MA 02115. AU - HUGHESDAVIES,L AU - GALANOPOULOS,T AU - HARRISON,L AU - MAXWELL,M AU - ANTONIADES,HN AU - DEMPLE,B DA - 1995/04/01 DO - 10.3892/ijo.6.4.749 EP - 752 IS - 4 JO - Int J Oncol PY - 1995 SN - 1019-6439 1791-2423 SP - 749 ST - EXPRESSION OF THE HUMAN APURINIC ENDONUCLEASE GENE (APE) IN NORMAL AND MALIGNANT-TISSUES T2 - International Journal of Oncology TI - EXPRESSION OF THE HUMAN APURINIC ENDONUCLEASE GENE (APE) IN NORMAL AND MALIGNANT-TISSUES UR - https://doi.org/10.3892/ijo.6.4.749 VL - 6 ER -