First drugs identified to have anticancer activity
They are notcell cycle specific, but rather work throughout the cycle. The mechanism of action is to bond with nucleic acids, thereby interfering with their action
ANTIMETABOLITES
Cytarabine
Methotrexate
5-Fluorouracil (5-FU)
6-Mercaptopurine
6-Thioguanine
ANTIMETABOLITES SIDE EFFECTS
Gastrointestinal toxicity
Acute bone marrow suppression
Antimetabolites
Act by interfering with the synthesis of new nucleic acids.
They are cell cycle specific and are much more toxic to proliferating cells but are not associated with delayed bone marrow suppression or carcinogenesis
ANTITUMOR ANTIBIOTICS
Bleomycin
Dactinomycin (actinomycin D)
Doxorubicin
Mithramycin
Mitomycin
ANTITUMOR ANTIBIOTICS SIDE EFFECTS
Cardiac toxicity
Skin ulceration with extravasation
Pulmonary toxicities
Bone marrow suppression
Increased effects of radiation therapy
Antitumor Antibiotics
Derived from microbial fermentation. Antibiotics act on the
DNA to disrupt DNA and RNA transcription. Although they are not cell cycle specific, the effects of the antibiotics are more pronounced in the S or G2 phase
HORMONAL AGENTS
Corticosteroids
Dexamethasone
Hydrocortisone
Prednisone
Antiandrogen
Flutamide
Antiestrogen
Tamoxifen
Goserelin acetate (Zoladex)
Gonadotropin-releasing hormone
Leuprolide
HORMONAL AGENTS SIDE EFFECTS
Hot flashes
Depression
Loss of libido
Increase risk in endometrial cancers.
Hormonal Agents
Act to eliminate or displace natural hormones
The most common use is in the treatment of breast cancer when the tumor is positive for estrogen and progesterone receptors.
An injectable hormone therapy used to treat prostatecancer.
Lupron
Clinically manipulate cells by binding to specific intracellular receptors and interacting with DNA to change cellular function.
Steroid hormones
NITROSOUREAS
Carmustine
Lomustine
Streptozocin
NITROSOUREAS SIDE EFFECTS
Delayedmyelosuppression
Gastrointestinal toxicity
Delayednephrotoxicity
Nitrosoureas
Not cell cycle specific, but they are lipid soluble and able to
cross the blood-brain barrier. Their action is similar to that
of alkylating agents in that they interfere with DNA synthesis.
PLANT ALKALOID
Etoposide
Paclitaxel (Taxol)
Vinblastine
Vincristine
PLANT ALKALOID SIDE EFFECTS
Neurotoxicity,
Severe ulceration of the skin (if extravasation occurs)
Myelosuppression
Plant Alkaloid
Derived from the periwinkle plant. By binding to a substance
that is needed for mitosis and solute transport, the vinca