Endocrinology and Metabolism

Original Article

Adrenal gland
Subunit-Specific Developmental Roles of PI3K in SF1-Expressing Cells: My Khanh Q. Huynh, Sang Hee Lyoo, Dong Joo Yang, Yun-Hee Choi, Ki Woo Kim; Endocrinol Metab. 2024;39(5):793-802. Published online August 30, 2024; DOI: https://doi.org/10.3803/EnM.2024.1999

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Abstract PDF PubReader ePub: Background
Phosphatidylinositol 3-kinase (PI3K) regulates cellular development and energy homeostasis. However, the roles of its subunits in organ development remain largely unknown.
Methods
We explored the roles of PI3K catalytic subunits in steroidogenic factor 1 (SF1)-expressing cells through knockout (KO) of the p110α and p110β subunits.
Results
We examined mice with a double KO of p110α and p110β in SF1-expressing cells (p110αβ KO^SF1). Although these animals exhibited no significant changes in the development of the ventromedial hypothalamus, we noted pronounced hypotrophy in the adrenal cortex, testis, and ovary. Additionally, corticosterone and aldosterone levels were significantly reduced. The absence of these subunits also resulted in decreased body weight and survival rate, along with impaired glucose homeostasis, in p110αβ KO^SF1 mice.
Conclusion
The data demonstrate the specific roles of PI3K catalytic subunits in the development and function of SF1-expressing organs.

Review Article

Miscellaneous
Coordination of Multiple Cellular Processes by NR5A1/Nr5a1: Ken-ichirou Morohashi, Miki Inoue, Takashi Baba; Endocrinol Metab. 2020;35(4):756-764. Published online December 23, 2020; DOI: https://doi.org/10.3803/EnM.2020.402

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16 Web of Science
17 Crossref

Abstract PDF PubReader ePub

The agenesis of the gonads and adrenal gland in revealed by knockout mouse studies strongly suggested a crucial role for Nr5a1 (SF-1 or Ad4BP) in organ development. In relation to these striking phenotypes, NR5A1/Nr5a1 has the potential to reprogram cells to steroidogenic cells, endow pluripotency, and regulate cell proliferation. However, due to limited knowledge regarding NR5A1 target genes, the mechanism by which NR5A1/Nr5a1 regulates these fundamental processes has remained unknown. Recently, newlyestablished technologies have enabled the identification of NR5A1 target genes related to multiple metabolic processes, as well as the aforementioned biological processes. Considering that active cellular processes are expected to be accompanied by active metabolism, NR5A1 may act as a key factor for processes such as cell differentiation, proliferation, and survival by coordinating these processes with cellular metabolism. A complete and definite picture of the cellular processes coordinated by NR5A1/Nr5a1 could be depicted by accumulating evidence of the potential target genes through whole genome studies.

Citations

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