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Explore groundbreaking guerrilla tactics and innovative approaches in pharmaceutical development, focusing on increasing drug efficacy while minimizing toxicity. Learn about novel drug development techniques and revolutionary findings in enhancing therapeutic index. Discover new possibilities in drug design and clinical trials.
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Guerrilla Tactics in Pharmaceutical Innovation and Testing Dr. V. Ravi Chandran R&D Practitioner Life Enhancing Technologies, LLC. Allen, TX USA
Questions in my mind: Do I develop all the Drugs at one shot? Platform Technology? Do I develop one Molecule at a time? What area do I apply this Technology?
Status in the early 2000 I wanted to increase the efficacy and reduce the toxicity i.e. Increase the Therapeutic Index Efficacious Toxic Drugs entering market Examples
Leading Causes of Death *JAMA Vol. 284, No.4, July 26, 2000
Guerrilla Tactic – 1 : Narrow area of attack with maximum impact Among Heart Diseases, Heart Attack is the leading cause of death in both men and women* *World Health Report 2004. Changing History, WHO 2004 pp 120-124 ISBN 92-4-156265-K
CLASSICAL AGE OLD DRUG • What is Aspirin? • Chemically it is Acetyl Salicylic Acid
Guerrilla Tactic – 2 : Solution is sometimes right before the eyes
Guerrilla Tactic – 3 : New association among unrelated concepts Can we therefore develop a new anti-platelet drug that is effective, but has minimal or no side effects? A drug/chemical that thins blood is an effective cardio-protective agent. Question Important Conclusion
Guerrilla Tactic – 4 : Specificity of Approach to New Drug Development Naturally Occurring Must have active group to form covalent permanent bond We will attach a suitable chemical group to the existing drug to eliminate its toxicity and improve Therapeutic Index. Non Toxic Chemical Group Must be detached & excreted or assimilated Good Carrier to Site of Action Strategy Group Selection Criteria
Guerrilla Tactic – 5 : Look Inward What is the most Advanced, compact Highly energy efficient, Lean, mean Fighting machine? Where do I Look for solution To this question? Human Body
Guerrilla Tactic – 6 : Versatile L - Threonine L - Tyrosine Which Amino Acids? Containing OH group L – Hydroxy Proline L – Serine
Surprising Results in Animal Models All 3 Amino Acid Esters are equal effective L – Threonine ester is better than other two and Aspirin None of the 3 Amino Acids Esters showed any toxicity in rat models
Guerrilla Tactic – 7 : Creativity turns Problems into Opportunities How to rapidly advance a NCE without an IND from Lab to Clinical Trials
Guerrilla Tactic – 8 : Simple Techniques are sometimes most useful What can be an effective, simple and reliable technique to measure effectiveness of anti-platelet drugs in humans
Human Clinical Trials Percentage increase in clotting time PLATROL vs.. Aspirin (Bayer) at 81mg dose based on 5-day average increase. The two PLATROL blocks shown above correspond to two separate volunteers who took the test drug over a period of 5 days. The third volunteer took Bayer Aspirin for 5 days. As per Figure 2, increase in clotting time for PLATROL occurred on the very first day of drug intake, and remained higher than Bayer ASA during the subsequent administrations.
CONCLUSIONS L-Threonine ester of Aspirin is a good carrier of Acetyl Group Are we finally getting closer to finding a “super” Aspirin? Are there better carriers of Acetyl Group than Salicylic Acid? Salicylic Acid is also a good carrier of Acetyl group Acetyl group is responsible for Anti-Platelet Activity of Aspirin
Guerrilla Tactic – 9 : Capitalize on what others totally missed Let us go back and take one more look at Aspirin and Salicylic Acid.
Guerrilla Tactic – 10 : Nature has the Answer Is there a naturally occurring molecule (that is essential to the human body) comes very close to our requirements Yes! Make acetyl ester of all other naturally occurring OH containing Amino Acids. Acetylate L-Tyrosine and test it for anti-platelet activity.
Anti-platelet Activity of Acetylated naturally occurring OH containing Amino Acids
Rat Whole Blood Clotting Time (min) Doses: Vehicle, 10, 20, 50 and 100 mg/kg
Dramatic results with Acetylated Amino Acids! Both at 81 and 325 mg dose, Bayer Aspirin increased clotting time only by 13% O Acetyl Serine increased clotting time by 23% O Acetyl Tyrosine increased clotting time by more than 50% and it was sustained after 24 hrs
Advantages of Acetylated Amino Acids • Non-toxic • All metabolites are natural to human body • All 4 AA are good carriers of acetyl group • Mechanism of action is identical to Aspirin • No Toxicity whatsoever • All AAA are nutritional supplements • Require no FDA approval to test • No NDA needed for marketing • Ideally suited for long term therapy
Guerrilla Tactic – 11 : Synergy Now, how about Acetylated Dipeptides Will they have any Anti – platelet activity? Synthesized O,O-Diacetyl Serine-Serine O,O-Diacetyl Serine-Tyrosine O,O-Diacetyl Serine-Threonine
Human Trial Dose 600 mg of O,O-Diacetyl Seryl Serine
Salient Features of Di-Acetylated Dipeptide • Rapid increase in clotting time (up to 87.5%) • Sustained increase in clotting time (37.5%) up to 8 days! • Is it as good as dissolving clot like TPA? Or it can replace Aspirin in sudden heart attack? Likely so. • Non Toxic • No Side effects or adverse reactions • Qualifies as nutritional supplement, hence requires no IND or NDA to test in human subjects • Qualifies for matter of composition patent, as it is novel, and patentable.
Summary Largest Drug Pipeline in the World 9000 molecules in 3 years Better Alternatives for 68 out of top 200 – $ 120 Bill in sales Creative processes and Guerrilla tactics Numerous Patents covering 80% of the market Better Alternatives for 6 out of top 10 – $ 41 Bill in sales
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Truly Life Enhancing! Thank You