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Effects of aging in the prostate Teresa Liu, Ph.D. K Scholar

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Page 1: Effects of aging in the prostate embargoed · • UW –Madison O’Brien Center • UT‐Southwestern • Doug Strand • UW –Madison Institute on Aging • Roz Anderson • UW

Effects of aging in the prostateTeresa Liu, Ph.D.

K Scholar

Page 2: Effects of aging in the prostate embargoed · • UW –Madison O’Brien Center • UT‐Southwestern • Doug Strand • UW –Madison Institute on Aging • Roz Anderson • UW

BPH/LUTS is multifactorial disease

Age

BPH/LUTD

BOO

Proliferation

FibrosisSmoothMuscle

Adapted from Liu et al, 2019

Page 3: Effects of aging in the prostate embargoed · • UW –Madison O’Brien Center • UT‐Southwestern • Doug Strand • UW –Madison Institute on Aging • Roz Anderson • UW

Hallmarks of Aging

Adapted from: https://doi.org/10.1016/j.cell.2013.05.039

Page 4: Effects of aging in the prostate embargoed · • UW –Madison O’Brien Center • UT‐Southwestern • Doug Strand • UW –Madison Institute on Aging • Roz Anderson • UW

Cellular senescence

https://doi.org/10.3390/cells9030766

Page 5: Effects of aging in the prostate embargoed · • UW –Madison O’Brien Center • UT‐Southwestern • Doug Strand • UW –Madison Institute on Aging • Roz Anderson • UW

Mitochondrial dysfunction

https://doi.org/10.1016/j.tcb.2016.05.008

Page 6: Effects of aging in the prostate embargoed · • UW –Madison O’Brien Center • UT‐Southwestern • Doug Strand • UW –Madison Institute on Aging • Roz Anderson • UW

Complex I dysfunction

Elisa Fassone, and Shamima Rahman J Med Genet 2012;49:578-590

Ryan J. Mailloux Redox Biol 2015; 4:381‐98

Page 7: Effects of aging in the prostate embargoed · • UW –Madison O’Brien Center • UT‐Southwestern • Doug Strand • UW –Madison Institute on Aging • Roz Anderson • UW

Hypothesis

• Accumulation of cellular senescence and mitochondrial dysfunction in the prostate results in an increase in prostatic fibrosis leading to an increase in lower urinary tract dysfunction.

n=10 n=10

n=10 n=10

0 20 40 60 80 1000

20

40

60

80

100

Age (yrs)

Y = 0.3863*X + 39.01p-value < 0.0001

Page 8: Effects of aging in the prostate embargoed · • UW –Madison O’Brien Center • UT‐Southwestern • Doug Strand • UW –Madison Institute on Aging • Roz Anderson • UW

Conclusions

• Fibrosis increases with age in mice and men• Cellular senescence increases with BPH/LUTD• Mitochondrial dysfunction corresponds to age and disease• Pirfenidone, an antifibrotic and a senolytics, can reverse fibrosis and mitochondrial dysfunciton

Page 9: Effects of aging in the prostate embargoed · • UW –Madison O’Brien Center • UT‐Southwestern • Doug Strand • UW –Madison Institute on Aging • Roz Anderson • UW

Future directions

• Further examine the effect of pirfenidone on mitochondrial dysfunction and cellular senescence.

• Examine the effect of drugs that specifically bypass complex I to reverse mitochondrial dysfunction.

Page 10: Effects of aging in the prostate embargoed · • UW –Madison O’Brien Center • UT‐Southwestern • Doug Strand • UW –Madison Institute on Aging • Roz Anderson • UW

Acknowledgements

• Ricke Lab• UW – Madison O’Brien Center• UT‐Southwestern

• Doug Strand• UW – Madison Institute on Aging

• Roz Anderson• UW – Madison K12

• Dale Bjorling

• University of Pittsburgh• Don DeFranco• Tim Greenamyre• Bruce Freeman• Shruti Shiva/Anne Newman

• UCSF• Scott Bauer

• Genentech• Andrey Shaw

• NIA