Micrin is regarded as a 'health housekeeping' hormone involved in regulating development, bodily maintenance, reproduction and senescence. Corroborated pioneering research has shown that micrin-related molecules can significantly reduce tissue overgrowth affecting the heart, liver, kidneys and other visceral and endocrine organs, and retard tumour cell growth. The intention is to exploit micrin-related drug candidates in areas of unmet medical need such as cardiac hypertrophy, polycystic kidney disease and benign and malignant proliferative diseases of the prostate and breast.
Micrin preferentially targets abnormal cells. Breast tumour cells in culture are shown in the time-lapse movie. Exposed to a low dose of micrin, the cells look like they are exploding and disappearing. In fact they are committing suicide, a process known as apoptosis. First there is cellular shrinkage, then chromatin condensation, DNA fragmentation and other intracellular changes that look like density changes. Membrane blebbing follows and 'apoptotic body' formation (sealing off of cytoplasm into small discrete units). Surrounding cells engulf the apoptotic bodies, by phagocytosis, before themselves succumbing to micrin.
Micrin derivatives are used in stem cell research, notably to maintain the cells of interest in a quiescent state to facilitate research and enable them to be used in the clinic.
The company’s founding hypothesis is that the body has a reproductively associated hormonal brake against tissue overgrowth and tumours. A theoretical exposition on micrin, the body’s brake, is available here.
Micrin is an example of a polypeptide hormone, meaning that it is a short protein which like all proteins consists of a chain of the 20 different available amino acids in a specific order. Within hormone producing cells micrin is sculpted for secretion into the blood stream from a much larger precursor protein, which is thus a prohormone. You can read about the hunt for the micrin prohormone here, with additional images of tissue sections here.
We have developed minimal copies of micrin that can be taken in a glass of water, for therapeutic use in reproduction (e.g. infertility), cancer and other indications (e.g. endometriosis, PCOS, BPH).
Micrin time-lapse video
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