B6-hINHBE/ob Mouse
Product Name
B6-hINHBE/ob Mouse
Product ID
C001600
Strain Name
C57BL/6NCya;C57BL/6JCya-Inhbetm1(hINHBE)Lepem1(R105X)/Cya
Backgroud
C57BL/6NCya;C57BL/6JCya
When using this mouse strain in a publication, please cite “B6-hINHBE/ob Mouse (Catalog C001600) were purchased from Cyagen.”
Product Type
Age
Genotype
Sex
Quantity
Gene Alias
ob, obese
Chromosome
Chr 12, Chr 6
MGI ID
Datasheet
Strain Description
Inhibin βE subunit (INHBE) is a member of the transforming growth factor-β (TGF-β) superfamily, highly specifically expressed in liver cells. The precursor protein of INHBE generates the inhibin β subunit after proteolytic processing. This protein is associated with various cellular processes, including cell proliferation, apoptosis, immune response, and hormone secretion. During the development of obesity and diabetes, the expression of INHBE protein inhibits the proliferation and growth of relevant cells in the pancreas and liver. Research has found a positive correlation between INHBE expression in the liver and insulin resistance and body mass index (BMI), suggesting that INHBE may be a liver factor in altering systemic metabolic status under conditions of obesity-related insulin resistance [1]. The studies conducted by Alnylam Pharmaceuticals and the Regeneron Genetics Center (RGC), respectively, revealed the close relationship between INHBE and fat regulation. The research demonstrated that rare loss-of-function variants in INHBE may protect the liver from the impact of inflammation, abnormal blood lipids, and type 2 diabetes by promoting healthy fat storage. Patients carrying such mutations exhibit more normal fat distribution, significantly reduced abdominal fat, improved metabolic conditions, and a decreased risk of cardiovascular diseases and type 2 diabetes [2-4]. These findings suggest that INHBE is a liver-specific negative regulator of fat storage. Inhibiting the expression of INHBE genes and proteins may be a potential strategy for treating metabolic disorders related to improper fat distribution and storage. Consequently, several small nucleic acid pharmaceutical companies, including Alnylam Pharmaceuticals, Arrowhead Pharmaceuticals, and Wave Life Sciences, are currently developing RNA interference (RNAi) drugs targeting INHBE to treat obesity [5-7].
The leptin (LEP) gene, also known as the OB gene, encodes the leptin protein, which is secreted into the circulation by white adipocytes and plays a major role in regulating energy homeostasis. Circulating leptin binds to leptin receptors (LEPR) in the brain, activating downstream signaling pathways that inhibit feeding and promote energy expenditure. Leptin also has multiple endocrine functions and is involved in physiopathological processes such as immune and inflammatory responses, hematopoiesis, angiogenesis, reproduction, bone formation, and wound healing [8]. Mutations in the LEP gene and its regulatory regions lead to severe obesity and morbid obesity with hypogonadism in humans and are also associated with the development of type II diabetes [9].
The B6-hINHBE/ob mouse model, generated by mating B6-hINHBE mice (Catalog Number: C001533) with Lep KO (ob/ob) mice (Catalog Number: C001368), is a metabolic disease model. It can be used for research on obesity, type II diabetes, and metabolic diseases related to improper fat distribution and storage, and for the development of human INHBE-targeted therapies.
Reference
Sugiyama M, Kikuchi A, Misu H, Igawa H, Ashihara M, Kushima Y, Honda K, Suzuki Y, Kawabe Y, Kaneko S, Takamura T. Inhibin βE (INHBE) is a possible insulin resistance-associated hepatokine identified by comprehensive gene expression analysis in human liver biopsy samples. PLoS One. 2018 Mar 29;13(3):e0194798.
Akbari P, Sosina OA, Bovijn J, Landheer K, Nielsen JB, Kim M, Aykul S, De T, Haas ME, Hindy G, Lin N, Dinsmore IR, Luo JZ, Hectors S, Geraghty B, Germino M, Panagis L, Parasoglou P, Walls JR, Halasz G, Atwal GS; Regeneron Genetics Center; DiscovEHR Collaboration; Jones M, LeBlanc MG, Still CD, Carey DJ, Giontella A, Orho-Melander M, Berumen J, Kuri-Morales P, Alegre-Díaz J, Torres JM, Emberson JR, Collins R, Rader DJ, Zambrowicz B, Murphy AJ, Balasubramanian S, Overton JD, Reid JG, Shuldiner AR, Cantor M, Abecasis GR, Ferreira MAR, Sleeman MW, Gusarova V, Altarejos J, Harris C, Economides AN, Idone V, Karalis K, Della Gatta G, Mirshahi T, Yancopoulos GD, Melander O, Marchini J, Tapia-Conyer R, Locke AE, Baras A, Verweij N, Lotta LA. Multiancestry exome sequencing reveals INHBE mutations associated with favorable fat distribution and protection from diabetes. Nat Commun. 2022 Aug 23;13(1):4844.
Deaton AM, Dubey A, Ward LD, Dornbos P, Flannick J; AMP-T2D-GENES Consortium; Yee E, Ticau S, Noetzli L, Parker MM, Hoffing RA, Willis C, Plekan ME, Holleman AM, Hinkle G, Fitzgerald K, Vaishnaw AK, Nioi P. Rare loss of function variants in the hepatokine gene INHBE protect from abdominal obesity. Nat Commun. 2022 Jul 27;13(1):4319.
Adam RC, Pryce DS, Lee JS, Zhao Y, Mintah IJ, Min S, Halasz G, Mastaitis J, Atwal GS, Aykul S, Idone V, Economides AN, Lotta LA, Murphy AJ, Yancopoulos GD, Sleeman MW, Gusarova V. Activin E-ACVR1C cross talk controls energy storage via suppression of adipose lipolysis in mice. Proc Natl Acad Sci U S A. 2023 Aug 8;120(32):e2309967120.
Arrowhead Pharmaceuticals. (2024). Arrowhead Pharmaceuticals Reports Fiscal 2024 First Quarter Results. Retrieved April 5, 2024, from https://arrowheadpharma.com/news-press/arrowhead-pharmaceuticals-reports-fiscal-2024-first-quarter-results-2/
Alnylam Pharmaceuticals. (2024). Harnessing Human Genetics to Power the Next Wave of RNAi Therapeutics. Retrieved April 5, 2024, from https://news.alnylam.com/rnai/articles/harnessing-human-genetics-power-next-wave-rnai-therapeutics
Wave Life Sciences. (2024). Research and Development. Retrieved April 5, 2024, from https://wavelifesciences.com/pipeline/research-and-development/
Ahima RS, Flier JS. Leptin. Annu Rev Physiol. 2000;62:413-37.
Livshits G, Pantsulaia I, Gerber LM. Association of leptin levels with obesity and blood pressure: possible common genetic variation. Int J Obes (Lond). 2005 Jan;29(1):85-92. doi: 10.1038/sj.ijo.0802826. Erratum in: Int J Obes Relat Metab Disord. 2005 Apr;29(4):447.
Strain Strategy
Construction strategy for B6-hINHBE mice: The sequences from the ATG start codon to 3'UTR of mouse Inhbe were replaced with the sequences from the ATG start codon to 3'UTR of human INHBE.
Construction strategy for Lep KO (ob/ob) mice: A p.R105*(CGA to TGA) mutation was introduced into exon 3 of the Lep gene in C57BL/6JCya mice.
Figure 1. Diagram of the gene editing strategy for the generation of B6-hINHBE mice.
Figure 2. Diagram of the gene editing strategy for the generation of Lep KO(ob/ob) mice.
Application Area
Research on the obesity and type II diabetes；
Research on the metabolic diseases associated with improper fat distribution and storage；
Development of human INHBE-targeted therapies.
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