Module 3-4 Review Flashcards
I-cell disease biomarker (Dr. R)
Elevated lysosomal enzymes in plasma (inclusion bodies)
I-cell disease symptoms (Dr. R)
Coarse facial features
Developmental delay
Skeletal abnormalities
Restricted joint movement
Enlarged liver and spleen
Gaucher disease affected enzyme (Dr. R)
Glucocerebrosidase
Gaucher disease biomarker (Dr. R)
Elevated chitotriosidase
Gaucher disease symptoms (Dr. R)
Enlarged liver and spleen
Bone pain
Fatigue
Bruising and bleeding
Lung disease
Growth retardation
Fabry disease affected enzyme (Dr. R)
Alpha-galactosidase A
Fabry disease biomarker (Dr. R)
Elevated globotriaosylceramide (ceramide trihexoside)
Tay-Sachs disease affected enzyme (Dr. R)
Hexosaminidase A
Tay-Sachs disease biomarker (Dr. R)
Elevated GM2 ganglioside
Krabbe disease affected enzyme (Dr. R)
Galactocerebrosidase
Krabbe disease symptoms (Dr. R)
Peripheral neuropathy
Destruction of oligodendrocytes
Developmental delay
Optic atrophy
Globoid cells
Niemann-Pick disease biomarker (Dr. R)
Elevated sphingomyelin
Niemann-Pick disease symptoms (Dr. R)
Enlarged liver and spleen
Neurological decline
Ataxia
Interstitial lung disease
Feeding difficulties
Failure to thrive
MLD affected enzyme (Dr. R)
Arylsulfatase A
MLD biomarker (Dr. R)
Elevated sulfatides
MLD symptoms (Dr. R)
Progressive neurological decline
Motor function loss
Behavioral changes
Seizures
Peripheral neuropathy
Hurler syndrome biomarker (Dr. R)
Elevated dermatan sulfate and heparan sulfate
Hurler syndrome symptoms (Dr. R)
Developmental delay
Skeletal abnormalities
Airway obstruction
Corneal clouding
Hepatosplenomegaly
Sphingolipidosis diseases
Tay-Sachs (GM2 Type A)*
Sandhoff (GM2 Type O) Activator deficiency (GM2 Type AB)
Niemann-Pick (A, B, C)*
Gaucher (1, 2, 3)*
Fabry (Classic, Adult)*
Metachromatic leukodystrophy (MLD)*
Krabbe (Globoid leukodystrophy)*
GM1 gangliosidosis (1, 2, 3)
Multiple sulfatase deficiency
Mucopolysaccharidosis syndromes
Hurler*
Scheie
Hurler-Scheie
Hunter*
San Filippo (A, B, C, D)
Morquio (A, B)
Maroteaux-Lamy
Sly
Mucolipidosis diseases
Sialidosis I and II (mucolipidois I)
I-cell (mucolipidois II)*
Psuedo-Hurler-Polydystrophy (mucolipidois III)
Mucolipidois IV
What happens when eIF-2 is phosphorylated
Inactivated
What amino acids have hydroxylation occur
Proline
Lysine
(Vitamin C dependent hydroxylases)
Collagen IV dysfunction diseases
Alport syndrome
Goodpasture syndrome
What causes Alport syndrome
Mutations in C-terminal globular domain of certain collagen IV chains
Symptoms of Alport syndrome
Progressive renal failure
Sensorineural hearing loss
Ocular abnormalities
Examples of adhesive ECM proteins
Integrins
Cadherins
Actin
Key structure of collagen
Glycine-proline-hydroxyproline with hydroxylysine
What 2 cofactors are required for collagen synthesis
Vitamin C
Iron (Fe2+)
What regulates MMP’s and ADAMT’s
Tissue Inhibitors of Matrix Metalloproteinases (TIMP’s)
What causes osteogenesis imperfecta (brittle bone or Lobstein syndrome)
Mutation in COL1A1 and COL1A2 causing collagen type I deficiency
Symptoms of Lobstein syndrome
Excessive bone fractures
Bone deformities
Short height
Basilar invagination
What is Ehlers-Danlos syndrome
Structural weakness in connective tissue due to defective collagen
Symptoms of scurvy
Perifollicular hyperkeratosis
Perifollicular hemorrhage
Coiled fragile corkscrew hair
Palpable purpura
Gingivitis
Swollen and painful joints
Function of gap junctions
Intercellular communication
Main cell to cell adhesion molecule
E-cadherin
What molecule suppression leads to metastasis of many cancers
E-cadherin
What cadherins are in desomosomes
Desmoglein 1
Desmoglein 3
What are gap junctions
2 connexon hemi-channels composed of 6 connexin monomers each
What proteins are associated with tight junctions
Claudins
Occludins
What proteins are associated with hemidesmisomes
Integrins
Keratin
Function of tight junctions
Prevent pericellular transport
Function of adhering junctions
Connects cells to each other
Function of desmosomes
Linking transcellular intermediate filaments
Function of hemidesmosomes
Anchor cells to basal lamina
Maintain integrity of basal lamina
Function of collagen type I
Bone
Skin
Tendons
Ligaments
Fascia
Dentin
Cornea
Organs
Scar tissue (late)
Function of collagen type II
Cartilage
Vitreous humor
Intervertebral discs
Function of collagen type III (reticulin)
Reticular fibers of the skin
Blood vessels
Scar tissue (early)
Fetal through embryogenesis
Function of collagen type IV
Basement membrane
Lens
Disease associated with collagen type I
Osteogenesis imperfecta
Ehlers-Danlos Type I
Disease associated with collagen type III
Ehlers-Danlos Type IV
Disease associated with collagen type IV
Alport
Goodpasture
Function of vinca alkaloids
Inhibit microtubule polymerization
Function of taxanes/taxels
Inhibit microtubule disassembly/Stabilize GDP-bound tubulin
Function of colchicine
Inhibit microtubule polymerization (Gout)
What stimuli are needed to make adult stem cells like embryonic
KLF
MYC
OCT3/4
SOX2
Nanog
“GO” factors for the cell cylce
Cyclins
Cyclin dependent kinases
Polo like kinases
“STOP” factors for cell cycle
TSG’s
RB
p53
CDK inhibitors
Cyclin - CDK - G1 active phase
Cyclin D (D1, D2, D3) - CDK4/CDK6
Cyclin - CDK - G1/S active phase
Cyclin E - CDK2
Cyclin - CDK - S active phase
Cyclin A - CDK2/CDK1
Cyclin - CDK - G2, M active phase
Cyclin B/A - CDK1
What virus causes Burkitt’s or Hodgkin’s lymphomas
Epstein-Barr (EBV)
What virus causes cervical cancer
Human Papilloma 16 (HPV)
What virus causes Kaposi sarcoma, non-Hodgkin’s and Hodgkin’s lymphomas, and cervical cancers
Human Immunodeficiency (HIV)
Angiogenesis activators
Angiotropin*
Ephrin*
Fibroblast Growth Factor*
MMP’s*
PDGF*
VEGF*
HIF-1
Erythropoietin
Angiogenesis inhibitors
Thrombospondins
Platelet factor 4
Endostatin
Angiostatin
TIMPs
Angiopoietin-2
What are the major characteristics of LAD
Disrupted microtubule assembly and aggregated microtubule proteins
Increased levels of fetal hemoglobin and reduced levels of adult hemoglobin Rare and is Bombay (hh) blood type and lack of Lewis blood group antigen
What is the deficiency in LAD Type I
beta2 integrin on leukocytes
What is the deficiency in LAD Type II
Selectins or fucosylation of selectins
Function of Arp2/3 complex (platelet abnormalities, cutaneous vasculitis, eosinophilia)
Initiate branches of actin
Major symptoms of Kartagener syndrome
Chronic sinusitis, lower respiratory tract infections, dextrocardia
Function of dystropin (muscular dystrophy)
Mediates actin binding with transmembrane protein in muscles
Function of spectrin (hereditary spherocystosis)
Cytoskeletal organization in erythrocytes (spherical RBC)
Causes of Kartagener syndrome
Impaired ciliary movement, mostly due to mutations in genes encoding dynein arms
Vitamin C deficiency adversely affects
Connective tissue
Bones
Dentin
Effects of Kartagener syndrome
Immotile sperm, Infertility, Severe bronchiectasis and sinusitis, Recurrent pulmonary infections
Diseases associated with gap junctions
Atrial fibrillation
Charcot-Marie –Tooth syndrome (connexin 32 mutation)
Disease associated with tight junctions
Crohn’s
Diseases associated with hemidesmosomes
Bullous pemphigoid (antibodies specifically target proteins (Integrin α6β4; BP180, BP230)
Epidermolysis bullosa
Disease associated with desmosomes
Pemphigus vulgaris (antibodies target desmoglein, a desmosomal specific cadherin)
Protein associated with desmosomes
Cadherin
Protein associated with hemidesmosomes
Integrin
Anchoring proteins
Actin
Cadherin
Integrin
Cell-cell juncitons
Gap
Tight
Desmosomes
Adheren
Cell-matrix junctions
Actin linked
Hemidemsosomes
Deficiency of spectrin causes
hereditary spherocytosis
Dystrophin deficiency causes
Muscular dystrophy
What is becaplermin used for
Recombinant PDGF, diabetic neuropathic ulcers
What are “mab”’s
Monoclonal antibodies
What are “nib”’s
RTK inhibitors
What are Bevacizumab, Ranibizumab
VEGF-A monoclonal antibodies
Steps of sprouting angiogenesis
Angiogenic factors—ECM proteases helps endothelial cell escape——EC proliferation and sprouts—migration—-tube formation
Steps of Intussusceptive angiogenesis
Two vessel forms contact zone—–growth factors penetrate——-pericyte and myofibroblasts infiltration——vessel growth
What ubiquinates and degrades cylcins/CDK’s in M phase
Anaphase promoting complex (APC)
Intrinsic pathway for apoptosis
Stress—–Bcl-2 inactivated——-Bax and Bak activation which forms pores in mitochondrial membrane——-release of cytochrome C———-activation of apoptosome (APF1 and caspase-9)——-caspase-3 activation——apoptosis
Extrinsic pathway for pathogens/cytokines in apoptosis
Death receptor (FADD) activation——Disc formation——activation of caspase 8 ——-caspase-3 activation——apoptosis
Extrinsic pathway for pathogens/cytokines in apoptosis (mitochondria)
Death receptor activation——Disc formation——activation of caspase 8 ——Bid—-mitochondrial cytochrome C release—-apoptosome -caspase-3 activation——apoptosis.
Function of capsase 1
Innate immunity
Inflammatory responses
Disease associated with increased expression of capsase 3
Huntington’s
Mutation in capsase 3 causes
Cancer
Anti-apoptotic proteins
BCL-2
BCL-xL
BCL-w
Pro-apoptotic proteins
Bax
Bad
Bak
Bid
Noxa
Examples of oncogene collaboration
KRAS and MYC
Beta-catenin and APC
Ras and p53
Oncogene collaboration happens at what time
Same time
Oncogene multi-hit happens at what time
Throughout life
What virus causes only Kaposi sarcoma
Human herpes 8 (HHV-8)
Tumor suppressor APC mutation symptoms
Adenomatous polyps
Tumor suppressor APC mutation disease
Familial adenomatous polyposis
Tumor suppressor PTEN mutation symptoms
Harmartomatous polyps
Tumor suppressor APC mutation disease
Cowden syndrome (multiple cancers)
Tumor suppressor p53 mutation disease
Li-Fraumeni syndrome
- Osteosarcoma
- Breast cancer
- Brain cancer
- Others
Tumor suppressor RB mutation disease
Retinoblastoma
Function of BCR-ABL gene
Non-receptor tyrosine kinase
Function of JAK2 gene
Non-receptor tyrosine kinase
Function of C-myc gene
Transcription factor
Function of BCL2 gene
Anti-apoptosis
Disease caused by BCR-ABL mutation
CML (t9:22)
Disease caused by JAK 2 mutation
Chronic myeloproliferative disorders
Disease caused by C-myc mutation
Burkitt lymphoma
Disease caused by BCL 2 mutation
Follicular lymphoma, diffuse large B cell lymphoma
Burkitt lymphoma is caused by what gene translocations
Myc 8q24 and IgH 14q32
Chronic myeloid leukemia is caused by what gene translocations
Abl 9q34 and BCR 22q11
Follicular lymphoma is caused by what gene translocations
IgH 14q32 and Bcl2 18q21
Major carcinogens include
Alkylating agents
Aflatoxin
Asbestos
Arsenic
Example of multi-hit hypothesis for colon cancer
Mutations in
- APC
- KRAS
- TP53