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The Exosomal Long Noncoding RNA aHIF is Upregulated in Serum From Patients With Endometriosis and Promotes Angiogenesis in Endometriosis

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Abstract

Objective: The transfer of long noncoding RNAs (IncRNAs) via exosomes to modulate recipient cells represents an important mechanism for disease progression. Antisense hypoxia-inducible factor (aHIF) is a well-known angiogenesis-related lncRNA. Here, we aimed to investigate the clinical implications of aHIF and exosomal aHIF in endometriosis and the involvement of exosome-shuttled aHIF in endometriosis angiogenesis. Study Design: The distribution and expression of aHIF in ectopic, eutopic, and normal endometria was evaluated. Serum exosomal aHIF levels in patients with endometriosis were tested. The correlation between serum exosomal aHIF and aHIF expression in ectopic endometria was analyzed. Endometriotic cyst stromal cells (ECSCs)-derived exosomes were characterized. The internalization of exosomes by human umbilical vein endothelial cells (HUVECs) was observed. A series of in vitro assays were conducted to investigate the roles and mechanisms of exosomal aHIF in endometriosis angiogenesis. Results: Clinically, aHIF was highly expressed in ectopic endometria and serum exosomes in patients with endometriosis. Serum exosomal aHIF was significantly correlated to aHIF expression in matched ectopic endometria. In vitro, PKH67-labeled exosomes derived from aHIF high expression ECSCs were effectively internalized by recipient HUVECs. Notably, exosome-shuttled aHIF was transferred from ECSCs to HUVECs, which in turn elicited proangiogenic behavior in HUVECs by activating vascular endothelial growth factor (VEGF)-A, VEGF-D, and basic fibroblast growth factor, thereby facilitating endometriosis angiogenesis. Conclusion: Our study illustrates a potential cell-cell communication between ECSCs and HUVECs in an ectopic environment, provides a novel mechanistic model explaining how ECSCs induce angiogenesis from the perspective of the “exosomal transfer of aHIF,” and highlights the clinical value of circulating exosomal aHIF in endometriosis.

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Authors and Affiliations

  1. Department of Gynaecology, Obstetrics and Gynaecology Hospital, Fudan University, 419 Fangxie Road, Shanghai, 200011, China

    Jun-Jun Qiu (PhD), Xiao-Jing Lin (MD), Ting-Ting Zheng (PhD), Xiao-Yan Tang (PhD), Ying Zhang (PhD) & Ke-Qin Hua (PhD)

  2. Department of Obstetrics and Gynaecology of Shanghai Medical College, Fudan University, 419 Fangxie Road, Shanghai, 200011, China

    Jun-Jun Qiu (PhD), Xiao-Jing Lin (MD), Ting-Ting Zheng (PhD), Xiao-Yan Tang (PhD), Ying Zhang (PhD) & Ke-Qin Hua (PhD)

  3. Shanghai Key Laboratory of Female Reproductive Endocrine-Related Diseases, Shanghai, China

    Jun-Jun Qiu (PhD), Xiao-Jing Lin (MD), Ting-Ting Zheng (PhD), Xiao-Yan Tang (PhD), Ying Zhang (PhD) & Ke-Qin Hua (PhD)

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  1. Jun-Jun Qiu
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  2. Xiao-Jing Lin
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Correspondence to Ying Zhang or Ke-Qin Hua.

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Qiu, JJ., Lin, XJ., Zheng, TT. et al. The Exosomal Long Noncoding RNA aHIF is Upregulated in Serum From Patients With Endometriosis and Promotes Angiogenesis in Endometriosis. Reprod. Sci. 26, 1590–1602 (2019). https://doi.org/10.1177/1933719119831775

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