Thursday, August 5, 2021

Study Reveals HAND2 Gene Might Be Responsible for Initiating Human Labor

                        National Institute of Health. “Scientists Seem to Be Studying the Same Genes, over and over.”, UW Medicine, 21 Sept. 2018, 

          For years, scientists have been working to understand how women go into labor from a molecular level, but the molecular mechanisms behind labor are poorly understood. Scientists have attempted to study pregnancy in animal models to understand it better. Still, the problem they have encountered in trying to do so is that pregnancy in animals is too different from humans to be very helpful. Yet, understanding the differences between animal and human pregnancy can give more insight into how labor is initiated. Mirna Marinić, a developmental biologist, and her research team studied twenty-seven species and compared gene expression profiles in the endometrial tissue that forms the maternal-fetal barrier. The team was looking for differences in gene expression linked to the evolution of different reproductive systems. The team found one hundred forty-nine genes that evolved to be expressed in the endometrial tissue of placental animals. One of these genes, HAND2, was of particular interest to the researchers. HAND2 is a transcription factor that is involved in readying the lining of the uterus for implantation and repressing estrogen signaling.             The researchers combed through available data and found that the expression of the HAND2 gene decreased as pregnancy progressed in humans. Mirna Marinić and the team performed an experiment in which they blocked the HAND2 gene from being expressed in human endometrial tissue. From this experiment, they pinpoint changes in gene expression patterns involved with protecting the fetus from the mother's immune system and premature birth. The team's findings heavily imply that HAND2 plays a role in starting labor. Mirna Marinić and her team's work will help scientists better understand how pregnancy and childbirth operate on a molecular level. By understanding how pregnancy and labor function on a molecular level, researchers can learn more about what causes premature birth and study it more in-depth.

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  1. Wow, it is amazing to hear that there is a lead on how labor goes into effect molecularly. This could rapidly change the way we handle premature births, maybe help us learn to better prolong a pregnancy to a safer term, and also potentially help mothers handle labor pains on a molecular stand point. As someone who is interested in this field of medicine, I would love to see how the discoveries of the HAND2 come out and hopefully change the future of maternal/fetal medicine.

  2. Any advancements we can make in limiting the amount of pre-mature births in our country is valuable. The birth of a pre-mature child puts them on a very unfavorable path of development. "Pre-mature babies are prone to cerebral palsy, mental retardation, visual and hearing impairments, and poor health and growth", according to

  3. This was very informational, I had no idea. This can evolve the process of labor and make it for helpful and safer for the baby and mother. This would help carry a healthy pregnancy and delivery without causing so many complications.