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April 5, 2026Cancer Research

High BMI omental preadipocytes promote mouse ovarian tumor growth and reduce survival via IGF-1 and NF-κB.

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Why the study?

The role of specific adipose cell populations in NF-κB-mediated ovarian cancer metastasis, particularly omental preadipocytes, remains unclear.

Does co-culture or co-injection with high BMI preadipocytes enhance ovarian cancer progression compared to normal BMI preadipocytes?

Population

In vitro co-culture and in vivo mouse co-injection models with human ovarian cancer cell lines

Comparison

Omental preadipocytes from high BMI donors vs normal BMI donors

Design

Preclinical in vitro and in vivo laboratory study

Key result

High BMI omental preadipocytes enhanced early ovarian tumor growth and reduced survival in mice compared to normal BMI preadipocytes, driven by increased IGF-1 secretion and NF-κB signaling.

Authors

SHSofia HoweEREmily RodriguezMRMikella Robinson

Discussion

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Overview

Should not yet change practice in obese ovarian cancer patients; hypothesis-generating for IGF-1/NF-κB targeting.

Key Points

  • The study investigates how obesity-induced changes in adipose tissue affect ovarian cancer progression via IGF-1 signaling.
  • Used in vitro co-culture and in vivo co-injection models with human ovarian cancer cell lines
  • Compared the effects of omental preadipocytes and mature adipocytes on cancer cell behavior
  • Assessed IGF-1 secretion and NF-κB signaling dynamics in high and normal BMI preadipocytes
  • Evaluated tumor growth rates and survival impacts in mouse models
  • High BMI preadipocytes enhanced early tumor growth and reduced survival in mice compared to normal BMI preadipocytes
  • Tumors from high BMI showed increased phosphorylation of p65 (Rel A), indicating altered NF-κB signaling
  • Significant increase in IGF-1 levels from high BMI preadipocytes
  • Reduced SOX2 expression and increased FN1 levels suggest changes in cancer cell characteristics due to the adipose microenvironment

Structured PICO

Does co-culture or co-injection with high BMI preadipocytes enhance ovarian cancer progression compared to normal BMI preadipocytes?

P
Population
In vitro co-culture and in vivo co-injection models with human ovarian cancer cell lines and isolated omental preadipocytes from high or normal BMI donors
I
Intervention
Co-culture or co-injection with isolated omental preadipocytes from high BMI donors
C
Comparator
Co-culture or co-injection with isolated omental preadipocytes from normal BMI donors
O
Outcome
Tumor growth and survival of micesurrogate

High BMI omental preadipocytes enhance ovarian cancer progression and reduce survival in preclinical models, potentially driven by IGF-1 mediated NF-κB signaling.

Cite This Study

Howe et al. (2026) studied this question. High BMI omental preadipocytes enhanced early ovarian tumor growth and reduced survival in mice compared to normal BMI preadipocytes, driven by increased IGF-1 secretion and NF-κB signaling.

synapsesocial.com/papers/69d1fd62a79560c99a0a35d3https://doi.org/10.1158/1538-7445.am2026-4083
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