Final answer:
Histone deacetylase (HDAC) inhibitors are a type of cancer therapy that targets epigenetic changes in gene expression. These drugs can increase the acetylation of histones, leading to changes in gene expression that can help kill tumor cells. HDAC inhibitors are effective in treating various types of cancer, including breast, pancreatic, and gastric cancer. The options (A), (C), and (D) are correct.
Step-by-step explanation:
Histone deacetylase (HDAC) inhibitors are a type of cancer therapy that targets epigenetic changes in gene expression. HDAC inhibitors work by blocking the enzymes called histone deacetylases, which normally remove acetyl groups from histone proteins. By inhibiting HDAC, these drugs can increase the acetylation of histones, leading to changes in gene expression that can help kill tumor cells.
HDAC inhibitors are effective in treating various types of cancer, including breast cancer, pancreatic cancer, prostate cancer, and gastric cancer. These drugs have a broad spectrum of activity and can target multiple types of cancer.
Therefore, the correct options for the question are: a. Breast, c. Pancreas, and d. Gastric.