Compositions and methods to improve the therapeutic benefit of indirubin and analogs thereof, including meisoindigo

a technology of indirubin and analogs, applied in the field of hyperproliferation diseases including oncology, can solve the problems of inability to meet preclinical testing and federal regulatory requirements for clinical evaluation, failure or disappointment of chemical agents in human clinical trials, and inability to rationally and successfully discover useful therapies, etc., to improve the utility of chemical agents with suboptimal performance, improve the effect of dose determination and schedule, and improve the therapeutic benefi

Pending Publication Date: 2015-03-26
BROWN DENNIS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0011]This invention meets the needs described above for compositions and methods that improve the therapeutic benefit of suboptimally administered chemical compounds and therapeutic compositions. Specifically, this invention relates to novel compositions and methods to improve the utility of chemical agents with suboptimal performance in patients suffering with cancer. The invention describes novel improvements, pharmaceutical ingredients, dosage forms, excipients, solvents, diluents, drug delivery systems, preservatives, more accurate drug administrations, improved dose determination and schedules, toxicity monitoring and ameliorization, techniques or agents to circumvent or reduce toxicity, techniques and tools to identify/predict those patients who might have a better outcome with a therapeutic agent by th...

Problems solved by technology

While many advances have been made from basic scientific research to improvements in practical patient management, there still remains tremendous frustration in the rational and successful discovery of useful therapies particularly for life-threatening diseases such as cancer, inflammatory conditions, infection, and other conditions.
However, from the tens of billions of dollars spent over the past thirty years supporting these programs both preclinically and clinically, only a small number of compounds have been identified or discovered that have resulted in the successful development of useful therapeutic products.
Unfortunately, many of the compounds that have successfully met the preclinical testing and federal regulatory requirements for clinical evaluation were either unsuccessful or disappointing in human clinical trials.
In other cases, chemical agents where in vitro and in vivo studies suggested a potentially unique activity against a particular tumor type, molecular target or biological pathway were not successful in human Phase II clinical trials where specific examination of particular cancer indications/types were evaluated in government sanctioned (e.g., U.S. FDA), IRB approved clinical trials.
In addition, there are those cases where potential new agents were evaluated in randomized Phase III clinical trials where a significant clinical benefit could not be demonstrated; such cas...

Method used

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  • Compositions and methods to improve the therapeutic benefit of indirubin and analogs thereof, including meisoindigo
  • Compositions and methods to improve the therapeutic benefit of indirubin and analogs thereof, including meisoindigo
  • Compositions and methods to improve the therapeutic benefit of indirubin and analogs thereof, including meisoindigo

Examples

Experimental program
Comparison scheme
Effect test

example 1

Synthesis of Meisoindigo

[1056]Prior Process

[1057]To synthesis meisoindigo, typically, add equal molar amount of 2-hydroxyindole and N-methyl-indolinyl-diketone, glacial acetic acid (2.0 L of glacial acetic acid for one mole of the reaction substances), and hydrochloric acid (concentrated, 6.67 ml of HCl for one mole of the reaction substances) into three-neck flask, heat to 70-80° C., stir for 2 h, cool to room temperature. Bulk brown crystal precipitates are then formed. Filter, and sequentially wash with glacial acetic acid, dH2O, and ethanol. The melting point is measured. It should be between 235-237° C. Filter, and sequentially wash with glacial acetic acid, dH2O, and ethanol. Melt point is measured. It should be between 235-237° C.

[1058]Newly Developed Process

[1059]An outline of the process is shown in Table 1.

TABLE 1Reaction solution*Reaction ConditionsPurification ProcessAcetic acid (15v)70-80° C. for 3 hrsCool to 25-30° C., filter,Conc. HCl (0.05v)wash with acetic acid (5v)...

example 2

Effect of Meisoindigo on Viability of Cancer Cell Lines

[1077]FIG. 1 shows the viability of the AML cell line MV 4-11 (FLT-3 ITD) after meisoindigo treatments. Viability at 48 hours is shown by (♦); viability at 24 hours is shown by (▪). Results are shown for a control, 1% DMSO without meisoindigo, 0.1 μM meisoindigo, 1 μM meisoindigo, 10 μM meisoindigo, and 100 μM meisoindigo.

[1078]FIG. 2 shows the viability of a number of myeloid cell lines in terms of the percentage of viable cells after 24 hours of treatment with meisoindigo. Results are shown for a control, 1% DMSO without meisoindigo, 0.1 μM meisoindigo, 1 μM meisoindigo, 10 μM meisoindigo, and 100 μM meisoindigo.

[1079]FIG. 3 shows the viability of a number of additional myeloid cell lines in terms of the percentage of viable cells after 24 hours of treatment with meisoindigo. Results are shown for a control, 1% DMSO without meisoindigo, 0.1 μM meisoindigo, 1 μM meisoindigo, 10 μM meisoindigo, and 100 μM meisoindigo.

[1080]FIG. ...

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Abstract

The present invention describes methods and compositions for improving the therapeutic efficacy of therapeutically active agents previously limited by suboptimal therapeutic performance by either improving efficacy as monotherapy or reducing side effects. Such methods and compositions are particularly applicable to therapeutically active agents selected from the group consisting of: (i) indirubin; (ii) an analog of indirubin; (iii) a derivative of indirubin or of an analog of indirubin; and (iv) a pharmaceutical composition comprising indirubin, an analog of indirubin, or a derivative of indirubin or of an analog of indirubin, especially meisoindigo.

Description

CROSS-REFERENCES[0001]This application claims the benefit of U.S. Provisional Application Ser. No. 61 / 614,724 by D. M. Brown, filed Mar. 23, 2012 and entitled “Compositions and Methods to Improve the Therapeutic Benefit of Indirubin and Analogs Thereof, Including Meisoindigo,” the contents of which are incorporated herein in their entirety by this reference.FIELD OF THE INVENTION[0002]The present invention relates to the general field of hyperproliferative diseases including oncology with a focus on novel methods and compositions for the improved utility of chemical agents, compounds, and dosage forms previously limited by suboptimal human therapeutic performance including indirubin and analogs thereof, such as meisoindigo.BACKGROUND OF THE INVENTION[0003]The search for and identification of cures for many life-threatening diseases that plague humans still remains an empirical and sometimes serendipitous process. While many advances have been made from basic scientific research to i...

Claims

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Application Information

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IPC IPC(8): A61K31/404A61K45/06
CPCA61K45/06A61K31/404C07D209/34A61K31/7056A61P35/02A61K39/3955C07K16/40C12N15/1137C12N2310/141C12N2320/31
Inventor BROWN, DENNIS
Owner BROWN DENNIS
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