Publication highlights

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Explore a selection of research case studies from the past five years.

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Intro

Researchers at the Crick are tackling the big questions about human health and disease, and new findings are published every week.

Our faculty have picked some of the most significant papers published by Crick scientists, all of which are freely available thanks to our open science policy.

Highlights

Fruit fly intestine in virgin and pregnant mice

Pregnancy irreversibly remodels the mouse intestine

Researchers have found that the small intestine grows in response to pregnancy in mice. This partially irreversible change may help mice support a pregnancy and prepare for a second. They found that pregnant mice had a longer small intestine from just seven days into the pregnancy. By the end of the pregnancy, around day 18, the small intestine was 18% longer, and it remained longer up to 35 days after lactation. The villi and crypts inside the small intestine also became longer and deeper at the same time, but returned to pre-pregnancy values just seven days after weaning. The researchers identified an increase in a membrane protein called SGLT3a early in pregnancy. This sodium and proton sensor was responsible for about 45% of the villi growth triggered by reproduction but wasn't necessary for entire small intestine lengthening. The team believe hormones may play a role in switching on the gene for SGLT3a.

Growth of the maternal intestine during reproduction

Published in Cell

Published

Dissected female (left) and male (right) guts of adult Drosophila. The tracheal branches that normally hold gut loops together are visualised in white.

Organ organisation: why sex-based differences in the size, shape, and position of the gut matter

Researchers at the Francis Crick Institute, the MRC Laboratory of Medical Sciences (LMS) and Imperial College London have revealed differences in the development, positioning, and ongoing maintenance of organs between male and female Drosophila flies that have consequences for healthy organ function. The researchers acquired 3D scans of many thousands of flies using a microCT scanner and outlined a complex dialogue between the gut and its vessels, that actively keep the gut looped in adult animals, and also leads to different shaped guts in males and females. Using genetic techniques, they relaxed the shape of the gut, and made female flies with a male gut shape. These flies had a reduced ability to produce offspring. The researchers believe that changing gut shape or position might interfere with the messages the intestine exchanges with other organs like the gonads. They are now applying the methods they have developed in flies to human MRI scans, to quantify the 3D features of our own intestinal tract.

The sex of organ geometry

Published in Nature

Published