Digested wheat gluten and leptin binding in lab tests
What it found
In lab tests, digested wheat gluten stopped leptin from binding to its receptor, with half the effect at about 10 ng/mL.
The researchers say this could be worth studying for leptin resistance and obesity.
What they found
Animal and lab studies
Leptin binding blocked
In lab tests, the digested wheat gluten reduced leptin binding to its receptor in a dose-dependent way. Half the maximum inhibition happened at a gluten digest concentration of about 10 ng/mL.
Heat treatment effect
When the gluten digest was heat-treated, it did not stop leptin from binding. But when it was spin-filtered, the inhibition remained.
No direct binding seen
The researchers could not detect the gluten digest binding directly to the leptin receptor. They suggest it might block binding in another way, such as by attaching to leptin itself.
Other findings
Relevant concentrations
The concentration that caused half the effect is similar to levels of wheat proteins previously found in human blood, which the authors say makes it clinically relevant.
What the authors conclude
“Digested wheat gluten inhibits binding of leptin to the leptin receptor, with half-maximal inhibition at 10 ng/mL.”
Also in their conclusions
- They conclude that digested wheat gluten inhibits binding of leptin to the leptin receptor, with half-maximal inhibition at 10 ng/mL.
- They say the inhibition is significant at clinically relevant concentrations and could serve as a new pathway to investigate leptin resistance, obesity and associated disorders.
- They call for more research on the effects of proteins from wheat and other cereal grains on leptin signalling, and on other dietary proteins and receptors.
How it was done
Leptin resistance is thought to be a main risk factor for obesity. The authors wanted to test whether cereal grain proteins could cause leptin resistance by blocking leptin from binding to its receptor.
They digested wheat gluten with pepsin and trypsin to mimic human digestion. They then used a lab technique called surface plasmon resonance to measure how well leptin bound to its receptor when mixed with different concentrations of the gluten digest.
What it can’t tell you
- This was a lab study, so it cannot show what happens in people.
- It cannot prove that digested wheat gluten causes leptin resistance or obesity in real life.
- It only looked at wheat gluten, not other wheat proteins or other cereal grains.
Who paid
- Authors work at
- Lund University/Region Skåne, Sweden; University of Copenhagen, Denmark; Odense University Hospital, Denmark
The paper
- Title
- Digested wheat gluten inhibits binding between leptin and its receptor
- Type
- Study
- Evidence
- Animals and lab studies
- Summarised from
- Full text
- Cite
- Jönsson T, Memon AA, Sundquist K, et al (2015). Digested wheat gluten inhibits binding between leptin and its receptor. BMC biochemistry. doi:10.1186/s12858-015-0032-yFree full textPubMed 25600821DOI
Summary written 26 Sep 2026. Check it against the paper before it changes what you eat. How we summarise papers · Report an error