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24 Cards in this Set

  • Front
  • Back
How are cell cycles regulated
By Cyclins and Cyclin-dependent kinase (also cyclin-dependent kindase inhibitors)
Types of small (3) and big (4) mutations
Small: Point mutations, microdeletions, methylation errors
Big: Translocations, large deletions, amplification, duplication
2 Classes of cancer genes
1. Oncognes
2. Tumour suppressor genes
Retinoblastoma
Most common eye tumour in children. Requires 2 RB-1 genes to be knocked out.
Oncogenes usually code for... (5)
1. Growth factors
2. Growth factor receptors
3. Signal transduction proteins
4. Nuclear regulators
5. Cell cycle regulators
Oncogene mutations (4)
1. Point mutation
2. Amplification
3. Translocation
5. Viral Insertion
Normal function of Tumour Suppressor Genes (2)
1. Gatekeepers
2. Caretakers
Mechanism of tumour suppressor gene inactivation (4)
1. Point mutation or small deletion
2. Major chromosomal loss or deletion
3. Replacement of normal allele by abnormal allele
4. Gene silencing
How does Hereditary nonpolyposis colorectal cancer occur?
Mutation of Mismatch repair gene
Hallmarks of Cancer (4 or 6)
1. Genomic instability
2. Inappropriate cell proliferation
3. Angiogenesis
4. Invasion and metastasis

1) Sustained angiogenesis
2) Self-sufficiency in growth signals
3) Insensitivy to antigrowth signals
4) Tissue invasion and metastasis
5) Limitless replicative potential
6) Evasion of apotosis
Positive and negative angiogenesis regulators and what are they regulated by?
Positive: VEGF (ras oncogene), bFGF
Negative: Thrombospondin-1 (p53 tumour suppressor gene)
What the two major subtypes of cell adhesion molecules and what are their functions.
Integrins: Allow cells to sense their extracellular environment and regulate proliferation and apoptosis.
Cadherins: Mediate cell-cell interaction
Cancer grows in what manner?
Gompertzian manner.
Characterization of poorly differentiated cells.
1. Pleomorphism
2. Hyperchromatism
3. Increased nuclear size and irregular contour
4. Increased mitotic activity
5. Loss of polarity
Components of diagnosis of cancer (6)
1. Incidence
2. Age
3. Gender
4. Risk factors
5. Pathology
6. Pathways of Spread
What are the systemic effect of malignancy? (2)
1. Anorexia
2. Cachexia
Types of Chemotherapy (5)
1. Primary Chemotherapy
2. Adjuvant Chemotherapy
3. Neoadjuvant Chemotherapy
4. Maintenance Chemotherapy
5. Palliative Chemotherapy
Three types of Radiation Therapy
1. Teletherapy or external beam radiation
2. Brachytherapy
3. Isotope Therapy
Common toxicities of chemotherapy (7)
1. Bone marrow suppression
2. Gastrointestinal
3. Cardiotoxicity
4. Hair & nails
5. Nervous system
6. Infertility
7. Secondary cancers
3 main types of cytotoxic anticancer drugs
1. DNA damaging agents
2. Inhibitors of DNA synthesis & repair
3. Inhibitors of microtubule function
DNA damaging agents (3)
1. Alkylating agents
2. Platinum compounds
3. Anthracyclines
Inhibitors of DNA synthesis & repair (2)
1. Topoisomerase inhibitors
2. Antimetabolites
a) Folate analogues
b) Pyrimidine analogues
Inhibitors of microtubule function (2)
1. Taxanes
2. Vinca Alkaloids
Example of hormonal therapy
1. Aromatase inhibitors
2. Anti-estrogen
3. Leutenizing hormone releasing hormone analogues
4. Antiandrogens