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Bcl-2 and its Role in Cancer. Mitochondria in the Cell

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Presentation on theme: "Bcl-2 and its Role in Cancer. Mitochondria in the Cell"— Presentation transcript:

1 Bcl-2 and its Role in Cancer

2 Mitochondria in the Cell http://micro.magnet.fsu.edu/cells/mitochondria/images/mitochondriafigure1.jpg

3 Cytochrome C’s Dual Functionality Protein that carries electrons in electron transport chain between mitochondrial membranes BUT released into cytosol, triggers apoptosis http://upload.wikimedia.org/wikipedia/commons/thumb/b/ba/Cytochrome_C.png/250px- Cytochrome_C.png

4 Bcl-2 family – apoptosis regulators http://www.cancer.gov/cancertopics/understandingcancer/targetedtherapies/lympho ma_htmlcourse/page3

5 Stress signal (DNA damage, heat shock) Pro-apoptotic members activated Cytochrome c release via MOMP Cytochrome c complexes with ATP and Apaf-1 (enzyme) Caspase-9 activated, then forms apoptosome with previous complex Caspase cascade to apoptosis http://www.reading.ac.uk/nitricoxide/intro/apoptosis/mito2.jpg Apoptosis Pathway

6 http://openi.nlm.nih.gov/detailedresult.php?img=2132464_JCB.amling5g&req=4 Viable, but smaller Half die by 6 weeks Smaller kidneys Skeletal development Immune failure Bcl-2 Knockout Mice

7 https://encrypted- tbn3.gstatic.com/images?q=tbn:ANd9GcTkoz4iPsXeDUTi1dbV1wzIQsD8sDB7HqkRJaxih9U4 UWe9Cusd-A Non- Hodgkin Lymphoma

8 http://www.sciencedirect.com/science/article/pii/S0167488903001885 Bcl-2 Translocations Found in Cancer

9 http://www.cancer.gov/cancertopics/understandingcancer/targetedtherapies/lymphoma_ htmlcourse/page3 Overexpression of Bcl-2 on the Outer Membrane of Mitochondria

10 Inhibiting Bcl-2 http://www.cancer.gov/images/targetedtherapies/lymphoma/m4s3c_1.jpg

11 http://www.cancer.gov/PublishedContent/Images/images/targetedtherapies/lymphoma/ m4s3c_3.jpg Potential Therapeutic Undergoing Clinical Trials

12 Sources http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2 132464/ http://www.scq.ubc.ca/apoptosis/ http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3 220196/pdf/iep_79.pdf http://www.cancer.gov/cancertopics/understandi ngcancer/targetedtherapies/lymphoma_htmlcour se http://www.sciencedirect.com/science/article/pii /S0167488903001885


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