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TMED family genes and their roles in human diseases.

ABSTRACT: The members of the transmembrane emp24 domain-containing protein (TMED) family are summarized in human as four subfamilies, α (TMED 4, 9), β (TMED 2), γ (TMED1, 3, 5, 6, 7) and δ (TMED 10), with a total of nine members, which are important regulators of intracellular protein transport and are involved in normal embryonic development, as well as in the pathogenic processes of many human diseases. Here we systematically review the composition, structure and function of TMED family members, and describe the progress of TMED family in human diseases, including malignancies (head and neck tumors, lung cancer, breast cancer, ovarian cancer, endometrial cancer, gastrointestinal tumors, urological tumors, osteosarcomas, etc.), immune responses, diabetes, neurodegenerative diseases, and nonalcoholic fatty liver disease, dilated cardiomyopathy, mucin 1 nephropathy (MKD), and desiccation syndrome (SS). Finally, we discuss and prospect the potential of TMED for disease prognosis prediction and therapeutic targeting, with a view to laying the foundation for therapeutic research based on TMED family causative genes.

SUBMITTER: Zhou L

PROVIDER: S-EPMC10620864 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature

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TMED family genes and their roles in human diseases.

Zhou Lv L Li Huaixu H Yao Hui H Dai Xingliang X Gao Peng P Cheng Hongwei H

International journal of medical sciences 20231016 13

The members of the transmembrane emp24 domain-containing protein (TMED) family are summarized in human as four subfamilies, α (TMED 4, 9), β (TMED 2), γ (TMED1, 3, 5, 6, 7) and δ (TMED 10), with a total of nine members, which are important regulators of intracellular protein transport and are involved in normal embryonic development, as well as in the pathogenic processes of many human diseases. Here we systematically review the composition, structure and function of TMED family members, and des ...[more]

PMID: 37928880

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Project description:BACKGROUND:TG-interacting factors (TGIFs) belong to a family of TALE-homeodomain proteins including TGIF1, TGIF2 and TGIFLX/Y in human. Both TGIF1 and TGIF2 act as transcription factors repressing TGF-? signalling. Human TGIFLX and its orthologue, Tex1 in the mouse, are X-linked genes that are only expressed in the adult testis. TGIF2 arose from TGIF1 by duplication, whereas TGIFLX arose by retrotransposition to the X-chromosome. These genes have not been characterised in any non-eutherian mammals. We therefore studied the TGIF family in the tammar wallaby (a marsupial mammal) to investigate their roles in reproduction and how and when these genes may have evolved their functions and chromosomal locations. RESULTS:Both TGIF1 and TGIF2 were present in the tammar genome on autosomes but TGIFLX was absent. Tammar TGIF1 shared a similar expression pattern during embryogenesis, sexual differentiation and in adult tissues to that of TGIF1 in eutherian mammals, suggesting it has been functionally conserved. Tammar TGIF2 was ubiquitously expressed throughout early development as in the human and mouse, but in the adult, it was expressed only in the gonads and spleen, more like the expression pattern of human TGIFLX and mouse Tex1. Tammar TGIF2 mRNA was specifically detected in round and elongated spermatids. There was no mRNA detected in mature spermatozoa. TGIF2 protein was specifically located in the cytoplasm of spermatids, and in the residual body and the mid-piece of the mature sperm tail. These data suggest that tammar TGIF2 may participate in spermiogenesis, like TGIFLX does in eutherians. TGIF2 was detected for the first time in the ovary with mRNA produced in the granulosa and theca cells, suggesting it may also play a role in folliculogenesis. CONCLUSIONS:The restricted and very similar expression of tammar TGIF2 to X-linked paralogues in eutherians suggests that the evolution of TGIF1, TGIF2 and TGIFLX in eutherians was accompanied by a change from ubiquitous to tissue-specific expression. The distribution and localization of TGIF2 in tammar adult gonads suggest that there has been an ultra-conserved function for the TGIF family in fertility and that TGIF2 already functioned in spermatogenesis and potentially folliculogenesis long before its retrotransposition to the X-chromosome of eutherian mammals. These results also provide further evidence that the eutherian X-chromosome has actively recruited sex and reproductive-related genes during mammalian evolution.

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TMED family genes and their roles in human diseases.

Publications

TMED family genes and their roles in human diseases.

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