Exploring INHBE/Activin E in Metabolic Health

What is INHBE/Activin E?

Activin E (beta E/beta E), a pivotal member of the transforming growth factor-β (TGF-β) superfamily, is encoded by the INHBE gene and is predominantly expressed in the liver. It functions as a dimeric protein (~23 kDa), composed of two βE subunits linked by disulfide bonds (Figure 1). Following proteolytic cleavage of its precursor, the mature secreted form circulates in the bloodstream to exert effects on target tissues.

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Schematic Diagram of Activin E Dimer (beta E/beta E) Structure (By ACRO)

Figure 1 Schematic Diagram of Activin E Dimer (beta E/beta E) Structure (By ACRO)

INHBE/Activin E: A Promising Therapeutic Target for Obesity

Schematic Diagram of INHBE–Activin E–ALK7 signaling pathway

Figure 2 Schematic Diagram of INHBE–Activin E–ALK7 signaling pathway

INHBE/Activin E: A Promising Therapeutic Target for Obesity

Research indicates that elevated INHBE gene expression increases Activin E protein levels, which in turn promotes hepatic adiposity, insulin resistance, and metabolic dysfunction-associated fatty liver disease (MAFLD). This process is mediated through the INHBE–Activin E–ALK7 signaling pathway (Figure 2).

INHBE stands out as a compelling target for treating obesity and related metabolic disorders. Its distinct advantage lies in the potential for selective reduction of adipose tissue—particularly visceral fat—while preserving lean muscle mass, a mechanistic profile that differentiates it from conventional weight-loss therapies.

INHBE/Activin E: A Promising Therapeutic Target for Obesity

Research indicates that elevated INHBE gene expression increases Activin E protein levels, which in turn promotes hepatic adiposity, insulin resistance, and metabolic dysfunction-associated fatty liver disease (MAFLD). This process is mediated through the INHBE–Activin E–ALK7 signaling pathway (Figure 2).

INHBE stands out as a compelling target for treating obesity and related metabolic disorders. Its distinct advantage lies in the potential for selective reduction of adipose tissue—particularly visceral fat—while preserving lean muscle mass, a mechanistic profile that differentiates it from conventional weight-loss therapies.

Schematic Diagram of INHBE–Activin E–ALK7 signaling pathway

Figure 2 Schematic Diagram of INHBE–Activin E–ALK7 signaling pathway

Why Choose ACROBiosystems for INHBE/Activin E Detection?

Why Choose ACROBiosystems for INHBE/Activin E Detection?

The ACRO Human Activin E Dimer ELISA Kit (Cat. No.CEA-B247) is specifically designed to detect the biologically dimeric form of Activin E (beta E/beta E), providing accurate and relevant physiological insights (Figure 3). Unlike other commercial kits that may detect non-dimeric isoforms, Our assay is designed to achieve target specificity and reliability (Table 1).

The kit is validated for use with human samples, humanized mouse models, and non human primate (NHP) specimens, supporting translational and preclinical research.

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Serum Activin E Dimer Protein Levels in the INHBE-siRNA Drug Treatment Group and the Control Group

Figure 3 NHP Serum Activin E Dimer Protein Levels in the INHBE-siRNA Drug Treatment Group and the Control Group

Table 1: Key Differentiators of the ACRO Activin E Dimer ELISA Kit

Feature Human Activin E Dimer Kit (ACRO) Other Commercially Kits
Target Activin E dimer Oligomeric/non-dimeric forms
Immunogen Recombinant Activin E dimer Oligomeric/non-dimeric forms
Standard Recombinant Activin E dimer Oligomeric/non-dimeric forms
Validation IP-MS/sequencing validated for Activin E detection Typically not validated
Detection Accurate Activin E dimer measurement Prone to false positives
Accuracy Reflects true biological changes May not correlate with activity
Design Principle Specific to bioactive form Often lacks dimer specificity

Sample Values

Sample Values

Sample Values

Healthy and High BMI donor serum samples were evaluated for the levels of human Activin E in assay. The sample detection rate was 100%. Mean of healthy donor is 12.78 ng/mL and mean of high BMI donor is 28.13 ng/mL.

Sample Values

Healthy and High BMI donor serum samples were evaluated for the levels of human Activin E in assay. The sample detection rate was 100%. Mean of healthy donor is 12.78 ng/mL and mean of high BMI donor is 28.13 ng/mL.

Sample Values

Cross-Reactivity

Cross-Reactivity

Activin E (Oligomeric/non-dimeric forms) and Activin C were detected in this assay. The cross-reactivity rate (%) is shown in the following Table.


Nominal value (pg/mL) Detected value (pg/mL) Cross-reactivity rate
Activin E (Oligomeric/non-dimeric forms) 2000000 5.5 0.000275%
Activin C 100000 24 0.024000%

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FAQ

Q

What form of Activin E does the CEA-B247 ELISA kit measure?

The assay is designed to detect biologically dimeric human Activin E, the betaE/betaE form encoded by INHBE, rather than reporting total Activin E without regard to assembly state.
Q

Why can dimer-specific detection matter in Activin E research?

Activin E is described as a disulfide-linked dimer of about 23 kDa. Measuring the dimeric form helps align the analytical readout with the biologically assembled molecule of interest.
Q

Which sample types or models have been evaluated with the Activin E dimer assay?

The assay is presented for human samples and has also been evaluated with humanized mouse models and non-human-primate specimens. Confirm the exact matrix guidance in the product instructions.
Q

Can the kit be used for humanized-mouse or non-human-primate studies?

Yes, those model types are included in the reported validation scope. Matrix suitability and dilution should still be established for the specific study samples.
Q

Does Activin C strongly interfere with the Activin E dimer measurement?

Low cross-reactivity with Activin C is reported under the tested conditions. Treat the stated percentage as assay-specific and assess interference if study samples contain unusually high related-protein levels.
Q

Has the assay detected Activin E in human serum samples?

Yes. Activin E was detected in serum from both healthy and high-BMI donors in the displayed study, with different group mean concentrations reported for that sample set.
  • Background
  • INHBE/Activin E: A Promising Therapeutic Target for Obesity
  • Why Choose ACROBiosystems for INHBE/Activin E Detection?
  • Sample Values
  • Cross-Reactivity
  • Free Sample Request
  • FAQ