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IMMUNOTHERAPY FOR PARKINSON’S
DISEASE
SAKEEL AHMED (PhD Scholar)
Department of Pharmacology (NIPER, Mohali)
Introduction
 Parkinson’s disease(PD) is the second most common neurodegenerative
disorder in the world, which mainly affect dopaminergic neurons in the
substantia nigra pars compacta.
 People with PD may experience:
Resting tremor
Bradykinesia
Limb Rigidity
Postural instability
Cognitive changes
Constipation
Sleep disorders
Fatigue
Motor symptoms Non-motor symptoms
https://www.parkinson.org/Understanding-Parkinsons
https://archive.org/stream/manualofdiseases02goweuoft#page/591/mode/1up
Pathogenesis of Parkinson’s Disease
Targets for the Immunotherapy
Figure: Structure of Alpha Synuclein
Figure: Pattern of Alpha Synuclein Aggregation
β-sheets
β-sheets
Types of Immunotherapy for PD
1. Passive Immunotherapy
 Antibodies
 Intrabodies
 Nanobodies
 Bispecific Antibody
2. Active Immunotherapy
 Vaccines
Challenges in development of Immunotherapy for PD
Efficacious active immunization strategies in PD must overcome two rate-
limiting obstacles:
1) Specificity for target antigens (αS).
2) Ensure adequate supply of antibodies across the blood-brain barrier (BBB).
Others
1) Biomarkers that accurately define subgroups within the PD patient
population.
2) Collection, pooling and analyze large scale cohort data by selecting, high
quality cohorts.
Immunotherapy against α-Synuclein
Figure. Structure and mechanisms of action of ABL301.
ABL301: Bispecific Antibody for PD
II:
:
Vaccines against α-Synuclein
Future Prospectus of Immunotherapy for PD
 Refine predictive models.
 Develop a biomarker that indicates that the intervention gets to the brain and engages the target.
 Collect, pooling and analyze large scale cohort data by selecting, high quality cohorts.
 Incorporate more genetic data in specific subpopulation.
 Study longitudinal clinical disease-course data and neuropathologic correlation for proposed PD
progression patterns.
 Identify more reliable outcome measure including neuroimaging and wet biomarkers.
 Develop biomarkers that accurately define subgroups within the PD patient population.
References
1. Zella, S. M. A. et al. Emerging Immunotherapies for Parkinson Disease. Neurol. Ther. 8, 29–
44 (2019).
2. Mandler, M. et al. Next-generation active immunization approach for synucleinopathies:
Implications for Parkinson’s disease clinical trials. Acta Neuropathol. 127, 861–879 (2014).
3. Nishant N.V. et al. Antibodies against alpha-synuclein: Tools and therapy. Neurochemistry,
J. O. F. 612–625 (2019).
4. Chatterjee, D. & Kordower, H. Neurobiology of Disease Immunotherapy in Parkinson ’ s
disease : Current status and future directions. 132, (2019).
Immunotherapy for Parkinson's Disease

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Immunotherapy for Parkinson's Disease

  • 1. IMMUNOTHERAPY FOR PARKINSON’S DISEASE SAKEEL AHMED (PhD Scholar) Department of Pharmacology (NIPER, Mohali)
  • 2. Introduction  Parkinson’s disease(PD) is the second most common neurodegenerative disorder in the world, which mainly affect dopaminergic neurons in the substantia nigra pars compacta.  People with PD may experience: Resting tremor Bradykinesia Limb Rigidity Postural instability Cognitive changes Constipation Sleep disorders Fatigue Motor symptoms Non-motor symptoms https://www.parkinson.org/Understanding-Parkinsons https://archive.org/stream/manualofdiseases02goweuoft#page/591/mode/1up
  • 4. Targets for the Immunotherapy
  • 5. Figure: Structure of Alpha Synuclein Figure: Pattern of Alpha Synuclein Aggregation β-sheets β-sheets
  • 6. Types of Immunotherapy for PD 1. Passive Immunotherapy  Antibodies  Intrabodies  Nanobodies  Bispecific Antibody 2. Active Immunotherapy  Vaccines
  • 7. Challenges in development of Immunotherapy for PD Efficacious active immunization strategies in PD must overcome two rate- limiting obstacles: 1) Specificity for target antigens (αS). 2) Ensure adequate supply of antibodies across the blood-brain barrier (BBB). Others 1) Biomarkers that accurately define subgroups within the PD patient population. 2) Collection, pooling and analyze large scale cohort data by selecting, high quality cohorts.
  • 9.
  • 10. Figure. Structure and mechanisms of action of ABL301. ABL301: Bispecific Antibody for PD
  • 11. II: :
  • 13. Future Prospectus of Immunotherapy for PD  Refine predictive models.  Develop a biomarker that indicates that the intervention gets to the brain and engages the target.  Collect, pooling and analyze large scale cohort data by selecting, high quality cohorts.  Incorporate more genetic data in specific subpopulation.  Study longitudinal clinical disease-course data and neuropathologic correlation for proposed PD progression patterns.  Identify more reliable outcome measure including neuroimaging and wet biomarkers.  Develop biomarkers that accurately define subgroups within the PD patient population.
  • 14. References 1. Zella, S. M. A. et al. Emerging Immunotherapies for Parkinson Disease. Neurol. Ther. 8, 29– 44 (2019). 2. Mandler, M. et al. Next-generation active immunization approach for synucleinopathies: Implications for Parkinson’s disease clinical trials. Acta Neuropathol. 127, 861–879 (2014). 3. Nishant N.V. et al. Antibodies against alpha-synuclein: Tools and therapy. Neurochemistry, J. O. F. 612–625 (2019). 4. Chatterjee, D. & Kordower, H. Neurobiology of Disease Immunotherapy in Parkinson ’ s disease : Current status and future directions. 132, (2019).

Editor's Notes

  1. In which there is the lose of the dopaminergic neuron in the SNpc. Postural instability is inability to maintain a steady, upright posture and a decreased blink rate of the eyes, and problems with fine motor coordination (for example, difficulties buttoning a shirt), Bradykinesia and postural instability both contribute to walking—or gait—difficulties. Insomnia like condition and problem in sleep , rapid eye movement (REM) sleep, vivid, bizarre, or disturbing dreams.  Fatigue is a term used to describe an overall feeling of tiredness or lack of energy.  Cognitive changes problems with thinking, word finding, and judgment are common.
  2. This peptide includes a cysteine, which is chemically conjugated, through a maleimide molecule, to KLH (keyhole limpet hemocyanin), a strong immunogenic protein. The antigenic complex KLH-peptide was used to stimulate an immunologic response by B cells, but not by T cells, avoiding an autoimmune response