Unknown function of the known reproductive hormone Progesterone (P4) in Anti-metastasis therapy: Progesterone (P4), an endogenous steroid hormone, inhibits the expression of a number of enzymes in the glycolytic cycle and suppresses proliferation, migration, invasion, tumorigenesis, and metastasis, via upregulation of its target gene, 17/August/2018, 11.45 am
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August 17, 2018Introduction: What they say:
A study from the State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China shows that “c-Src phosphorylation and activation of hexokinase promotes tumorigenesis and metastasis.” This study was published in the 5 January 2017 issue of the journal “Nature communications”
by Prof. Li Qinxi, Jia Zhang, and others.What we say:
On the foundation of this interesting finding, Dr L Boominathan PhD, Director-cum-chief Scientist of GBMD, reports that: Unknown function of the known reproductive hormone Progesterone (P4) in Anti-metastasis therapy: Progesterone (P4), an endogenous steroid hormone, inhibits the expression of a number of enzymes in the glycolytic cycle and suppresses proliferation, migration, invasion, tumorigenesis, and metastasis, via upregulation of its target gene
Significance of the study to Public health relevance:
Given that: (i) each year nearly 14 million people globally are diagnosed with cancer, and a little more than half of them will die; (ii) cancer deaths globally are expected to be doubled by 2030; (iii) 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; (ii) a cheaper alternative to the existing expensive anticancer drugs; (ii) a side-effect-free natural product-based drug; and (iii) a way to effectively treat and prevent metastatic progression and relapse of cancers.
What we infer from what they say:
Prof. Li Qinsi’s research team has recently shown that oncoprotein c-Src: (1) phosphorylates the rate limiting enzyme of the glycolysis Hexokinase-1/2 (HK1)/(HK2) at Tyr732; (2) prevents HK dimer formation; (3) increases affinity (decreases Km value for glucose) for glucose; and (4) promotes tumor survival even under poor glucose conditions. Further, they shown that HK1-Y732 phosphorylation level correlates with metastasis capability of primary cancers. Together, these findings suggest that inhibition of c-Src and its downstream target Hexokinase expression in cancer cells may prevent tumor growth.
From research findings to therapeutic opportunity :
Progesterone (P4) has been shown to function as an anti-proliferative agent (fig. 1). However, the mechanism of action is far from clear.
Progesterone (P4), by increasing the expression of its target genes, it may decrease the expression of c-Src and HK-1/2 (fig. 1). Thereby, it may: (i) augment HK dimer formation; (ii) increase Km value for glucose; (iii) decrease tumor survival; (iv) inhibit tumor proliferation and growth; and (v) promote tumor regression (fig.1).
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Thus, pharmacological formulations encompassing “Progesterone (P4) or its analog, either alone or in combination with other known anticancer drugs,” (fig. 1) may be used to inhibit metastatic progression of primary cancers.
Figure 1. Mechanistic insights into how Progesterone (P4) functions as an anticancer agent. Progesterone (P4), by increasing the expression of its target genes, it may suppress the expression of c-Src and Hexokinase- 1/2 to promote tumor regression.
Figure 2. The chemical structure of Progesterone (P4).
Details of the Research findings:
Idea Proposed/Formulated (with experimental evidence) by Dr L Boominathan Ph.D.
Amount: $100#
Undisclosed mechanistic information: How does Progesterone (P4) decrease the expression of c-Src and HK1/2 to inhibit tumor growth?
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References:
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Citation: Boominathan, L., Unknown function of the known reproductive hormone Progesterone (P4) in Anti-metastasis therapy: Progesterone (P4), an endogenous steroid hormone, inhibits the expression of a number of enzymes in the glycolytic cycle and suppresses proliferation, migration, invasion, tumorigenesis, and metastasis, via upregulation of its target gene, 17/August/2018, 11.45 am, Genome-2-BioMedicine Discovery center (GBMD), http://genomediscovery.org
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