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MRC Laboratory of Molecular Biology

MRC Laboratory of Molecular Biology

One of the world's leading research institutes, our scientists are working to advance understanding of biological processes at the molecular level - providing the knowledge needed to solve key problems in human health.

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Insight on Research

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Clinical study reveals striking daily temperature variation in the human brain that predicts survival after brain injury

Temperature scale on the left hand side, using a colour scale that is mirrored in the brain on the right hand side which illustrates the varying temperatures across brain regions

A clinical study, led by Nina Rzechorzek in John O’Neill’s group at the LMB, showed that healthy human brain temperature varies far more than previously assumed—by age, sex, brain region, and time of day. This has major implications for patients, suggesting that daily rhythmic brain temperature variation is critical to brain function.

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Published on 13th June, 2022

Blocking action of intestinal immune cell enhances the immune response to colorectal cancer

Images depicting sections of the intestine of the transgenic APC mouse model used in this study. Examples of intestine from a transgenic APC mouse (left), an APC mouse that lacks IL-25 (middle), and an APC mouse that lacks ILC2s (right). Individual dots indicate the nuclei of different cells. Brown nuclei indicate those cells (immune cells, epithelial cells or cancerous cells) that are actively proliferating. Nuclei of cells not proliferating are observed in blue. Images on the upper row depict examples of intestinal cancerous tissue (red squares). It can be observed that the cancers from the transgenic APC mouse (left) are larger than those found in the APC mice that lack IL-25 (middle) or ILC2s (right). Images on the lower row show lymphoid tissue containing immune cells (blue squares) present in the intestine. The transgenic APC mouse presents reduced lymphoid tissue. In contrast, APC mice without an IL-25 signal or ILC2s develop larger lymphoid tissue with actively proliferating immune cells, indicating a more active immune response.

Andrew McKenzie’s group, in the LMB’s PNAC Division, has found a link between tumour-related expression of the IL25 gene, innate lymphoid cells and reduced survival amongst colorectal cancer patients

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Published on 7th June, 2022

Functional human replisome reconstituted for the first time

Replisome performing DNA replication

A new study from Joe Yeeles’ group, in the LMB’s PNAC Division, demonstrates the first reconstitution of a functional human replisome that performs fast and efficient DNA replication.

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Published on 18th May, 2022

Proteins required for processing the end of mRNAs identified

CryoEM structure of the polymerase module of CPF in complex with RNA, the PSR of Mpe1 and the yPIM of Cft2. The structure shows how Mpe1 (orange) directly contacts RNA (gray), and Cft2 (light blue) binds to the polymerase module of the yeast cleavage and polyadenylation factor (CPF).

Lori Passmore’s group in the LMB’s Structural Studies Division has shown that Mpe1 in yeast and RBBP6 in humans are critical for activating CPF and CPSF respectively, protein complexes vital to cleavage process of mRNA.

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Published on 17th May, 2022

Human inner kinetochore structure reveals mechanism for binding DNA during mitosis

Structure of the inner kinetochore bound to centromeric CENP-A nucleosome

In solving the structure of the human inner kinetochore bound to a centromeric CENP-A nucleosome, David Barford’s group in the LMB’s Structural Studies Division has revealed how the complex recognises centromeric DNA and functions as a load-bearing element during chromosome segregation.

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Published on 19th April, 2022

Structural study reveals unexpected diversity in GABAA receptor assembly

GABAA receptors, which mediate essential signalling in the brain and beyond, can assemble into a much larger number of arrangements than previously anticipated. This diversity enables complex responses to both neurotransmitters and drugs. Image shows structures of GABAA receptors in variety of arrangements.

Structural analysis of GABAA receptors by Radu Aricescu’s group, in the LMB’s Neurobiology Division, has revealed possibility for an unexpected variety in subunit arrangement, with significant implications for future research and therapeutic developments.

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Published on 30th March, 2022
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