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Cardiovascular Disease and Adiposity / Adipokines, Inflammation, and Metabolic Diseases · Journal article
Jci Insight · August 10, 2026
Encouraging direction, but not yet definitive.
This transcriptomic study identifies impaired adipocyte differentiation capacity in subcutaneous adipose tissue from women with PCOS, mediated partly by elevated SLIT2/ROBO signaling from mesenchymal stem cells. The mechanism is supported by targeted cell culture assays but remains preclinical; the finding is consistent with the altered fat distribution and metabolic dysfunction observed clinically in PCOS, but requires validation in larger cohorts and in vivo confirmation.
Cross-sectional transcriptomic study with mechanistic cell culture validation. Premenopausal women: 15 with PCOS (formally PMOS) and signs of insulin resistance, and 17 healthy controls matched for BMI. Setting and detailed eligibility criteria not specified beyond BMI matching and premenopausal status.. Intervention: Transcriptomic profiling of subcutaneous adipose tissue; in vitro exposure of preadipocytes to SLIT2.. Compared with: Healthy BMI-matched controls; preadipocytes not exposed to SLIT2 in cell culture assays.. n = 32.
Higher ratio of fibrotic to insulin-sensitive adipocytes in PCOS versus control SAT Higher ratio of mesenchymal stem cells to preadipocytes in PCOS SAT Preadipocytes in PMOS exhibit more inflammatory transcriptomic signatures and reduced differentiation capacity
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If validated, this pathway could explain why women with PCOS develop ectopic fat accumulation and metabolic syndrome despite normal or near-normal BMI. Targeting SLIT/ROBO signaling might theoretically improve adipose tissue function, though clinical translation remains distant.
A mechanistically detailed transcriptomic study in a modest patient cohort identifying a potential pathway (SLIT2/ROBO signaling) that impairs adipogenesis in PCOS, supported by targeted cell culture validation but requiring confirmation in larger cohorts and functional studies.
As stated by the source record.
Quoted from the source exactly as published.
If validated, this pathway could explain why women with PCOS develop ectopic fat accumulation and metabolic syndrome despite normal or near-normal BMI. Targeting SLIT/ROBO signaling might theoretically improve adipose tissue function, though clinical translation remains distant.
Graded across the dimensions that decide whether you should act, each from what the source actually supports. There is no single score, and where a dimension was not assessed it says so.
Women with PMOS (formally termed PCOS) have an overall increased prevalence of metabolic syndrome (MetS) and central obesity. To help determine whether there might be changes in s.c. adipose tissue (SAT) associated with these abnormalities, we performed single-nuclei and scRNA-seq on SAT biopsies from 15 premenopausal PMOS women with signs of insulin resistance and 17 healthy BMI-matched controls. In SAT from PMOS versus control we observed a higher ratio of fibrotic versus insulin sensitive adipocytes and a higher ratio of mesenchymal stem cells (MSCs) to preadipocytes. Further in silico analysis suggested that preadipocytes in PMOS are more inflammatory and have a reduced capacity for differentiation. Slit homolog 2 (SLIT2), which is expressed at higher levels in MSC from PMOS, decreased adipogenesis in cell culture assays likely through its interaction with the Roundabout homolog 1 and homolog 2 (ROBO1/2) receptor expressed on the surface of preadipocytes. These new observations are consistent with higher SLIT/ROBO signaling, leading to reduced differentiation in the SAT of PMOS as an underlying mechanism for the aberrant ectopic fat accumulation and the development of MetS in PMOS. Women with PCOS show altered fat tissue specifically poor cell maturation, driven partly by increased SLIT/ROBO signaling, contributing to metabolic syndrome risk.
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