Natural product/vitamin-based Combination therapy for PTEN-deficient cancer: A therapeutic mix encompassing Artemisinin, Cholecalciferol and Metformin decreases the expression of CHD1, increases the expression of a number of tumor suppressor genes, inhibits pro-survival TNF-NF-kB gene network, and suppresses tumorigenesis of PTEN-deficient cancer, 22/August/2017, 10.29 pm

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Introduction: What they say:

A study from the Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA shows that “Synthetic essentiality of chromatin remodelling factor CHD1 in PTEN-deficient cancer.” This study was published in the 6 February 2017 issue of the journal “Nature” [the number 1 journal in General Biology with an I.F of >42 plus] by MD Anderson President Prof. Ronaldo DePinho A, Zhao D and others.


What we say:

On the foundation of this interesting finding, Dr L Boominathan PhD, Director-cum-chief Scientist of GBMD, reports that: Natural product/vitamin-based Combination therapy for PTEN-deficient cancer: A therapeutic mix encompassing Artemisinin, Cholecalciferol and Metformin decreases the expression of CHD1, increases the expression of a number of tumor suppressor genes, inhibits pro-survival TNF-NF-kB gene network, and suppresses tumorigenesis of PTEN-deficient cancer


From Significance of the study to Public health relevance:

Given that: (i) each year nearly 14 million people are diagnosed with cancer globally, and little more than half of them will die; (ii) each year 176,000 cases of prostate cancer are identified in the US; and about 28,000 of them will die; (iii) about 70% of Prostate cancers are deficient in tumor suppressor gene PTEN, the second most mutated gene in cancer, next to tumor suppressor Tp53; (iv) cancer deaths globally are expected to be doubled by 2030; (v) cancer treatment causes the highest economic loss compared to all the known causes of death worldwide, there is an urgent need to find: (i) a way to prevent an individual from being susceptible to cancer by strengthening his/her own immune system (Cancer immunotherapy); (ii) a cheaper alternative to the existing expensive anticancer drugs; (ii) a side-effect-free natural product-based drug; (iii) increase the therapeutic index of anticancer drugs; and (iv) a way to effectively treat and prevent metastatic progression and relapse of advanced/drug-resistant cancers.


What we infer from what they say:

Prof. Ronald’s research team has recently shown that activation of PTEN results in (1) GSK3ß-mediated phosphorylation of CHD1 (chromatin helicase DNA-binding factor) degron domains; (2) activation of ß-TrCP-mediated ubiquitination-proteasome pathway; and (3) degradation of CHD1 protein. Further, they have shown that PTEN deficiency in cancers results in (1) increased levels of CHD1 through protein stabilization; (2) trimethyl lysine-4 histone H3 modification; (3) induction of pro-oncogenic TNF-NF-kB gene network; and (4) increased proliferation of cancer cells, suggesting that targeting CHD1 in PTEN-deficient cancers, such as Prostate and Breast cancers, one may inhibit the progression of PTEN-deficient cancers.


From research findings to therapeutic opportunity :

This study suggests a natural product/Vitamin-based Combination therapy for PTEN-deficient cancers. Artemisinin has been shown to  function as an anticancer agent (fig. 1). However, the detailed mechanistic insights is yet to emerge.

A therapeutic mix encompassing Artemisinin, Cholecalciferol (Vitamin-D3/Calcitriol) and Metformin, by increasing the expression of their target genes, they may decrease the levels of CHD1. Thereby, they may: (i) inhibit trimethyl lysine-4 histone H3 modification; (ii) suppress oncogenic and tumor survival TNF-NF-kB gene network; (iii) decrease the expression of pro-survival proteins; (iv) increase the expression of tumor suppressor proteins and pro-apoptotic proteins; (v) inhibit tumor proliferation and growth; and (vi) inhibit progression of cancers that are deficient in PTEN expression (fig.1).

price-300

Thus, pharmacological formulations encompassing combination of “Artemisinin, Cholecalciferol and Metformin or their analogues, either alone or in combination with other drugs” (fig. 1) may be used to treat cancers that are deficient in PTEN expression, such as Prostate and Breast cancers.

Figure 1. Combination therapy for PTEN-deficient cancer. Mechanistic insights into how a therapeutic mix encompassing Artemisinin, Cholecalciferol (Vitamin-D3/Calcitriol) and Metformin suppresses the expression of CHD1; and the  oncogenic TNF-NF-kB network signalling to promote tumor regression in PTEN-deficient cancer


Details of the Research findings:

Idea Proposed/Formulated (with experimental evidence) by: Dr L Boominathan Ph.D.

Amount: $300#

Undisclosed mechanistic information: How does a therapeutic mix encompassing Artemisinin, Cholecalciferol (Vitamin-D3/Calcitriol) and Metformin decrease the expression of CHD1 to prevent progression of PTEN-deficient cancer?

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References:

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Citation: Boominathan, L., Natural product/vitamin-based Combination therapy for PTEN-deficient cancer: A therapeutic mix encompassing Artemisinin, Cholecalciferol and Metformin decreases the expression of CHD1, increases the expression of a number of tumor suppressor genes, inhibits pro-survival TNF-NF-kB gene network, and suppresses tumorigenesis of PTEN-deficient cancer, 22/August/2017, 10.29 pm, Genome-2-Bio-Medicine Discovery center (GBMD), http://genomediscovery.org

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