PMID- 27879248 OWN - NLM STAT- MEDLINE DCOM- 20170620 LR - 20231213 IS - 1522-1555 (Electronic) IS - 0193-1849 (Print) IS - 0193-1849 (Linking) VI - 312 IP - 1 DP - 2017 Jan 1 TI - High-fat diet-induced obesity regulates MMP3 to modulate depot- and sex-dependent adipose expansion in C57BL/6J mice. PG - E58-E71 LID - 10.1152/ajpendo.00128.2016 [doi] AB - Increased adipocyte size is hypothesized to signal the recruitment of adipose progenitor cells (APCs) to expand tissue storage capacity. To investigate depot and sex differences in adipose growth, male and female C57BL/6J mice (10 wk-old) were challenged with high-fat (HF) or low-fat (LF) diets (D) for 14 wk. The HFD increased gonadal (GON) depot weight by adipocyte hypertrophy and hyperplasia in females but hypertrophy alone in males. In both sexes, inguinal (ING) adipocytes were smaller than GON, and depot expansion was due to hypertrophy. Matrix metalloproteinase 3 (Mmp3), an antiadipogenic factor, and its inhibitor Timps modulate the extracellular matrix remodeling needed for depot expansion. Mmp3 mRNA was depot different (ING > GON), higher in females than males and mainly expressed in APCs. In males, HFD-induced obesity increased tissue and APC Mmp3 mRNA levels and MMP3 protein and enzymatic activity. In females however, HFD significantly decreased MMP3 protein without affecting its mRNA levels. MMP3 activity also decreased (significant in ING). Timp4 mRNA was expressed mainly in adipocytes, and HFD-induced obesity tended to increase the ratio of TIMP4 to MMP3 protein in females, whereas it decreased it in males. Overexpression of Mmp3 in 3T3-L1 preadipocytes or rhMMP3 protein added to primary human preadipocytes inhibited differentiation, whereas rhTIMP4 improved adipogenesis and attenuated the inhibitory effect of rhMMP3. These data suggest that HFD-induced obesity downregulates APC MMP3 expression to trigger adipogenesis, and adipocyte TIMP4 may modulate this process to regulate hyperplastic vs. hypertrophic adipose tissue expansion, fat distribution, and metabolic health in a sex- and depot-dependent manner. CI - Copyright (c) 2017 the American Physiological Society. FAU - Wu, Yuanyuan AU - Wu Y AD - Obesity Center, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts. FAU - Lee, Mi-Jeong AU - Lee MJ AD - Obesity Center, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts. FAU - Ido, Yasuo AU - Ido Y AD - Obesity Center, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts. FAU - Fried, Susan K AU - Fried SK AD - Obesity Center, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts susan.fried@mssm.edu. LA - eng GR - R24 DK087669/DK/NIDDK NIH HHS/United States GR - R01 DK080448/DK/NIDDK NIH HHS/United States GR - P30 DK046200/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20161122 PL - United States TA - Am J Physiol Endocrinol Metab JT - American journal of physiology. Endocrinology and metabolism JID - 100901226 RN - 0 (RNA, Messenger) RN - 0 (Recombinant Proteins) RN - 0 (Tissue Inhibitor of Metalloproteinases) RN - EC 3.4.24.17 (MMP3 protein, human) RN - EC 3.4.24.17 (Matrix Metalloproteinase 3) RN - EC 3.4.24.17 (Mmp3 protein, mouse) SB - IM MH - 3T3-L1 Cells MH - Adipocytes/drug effects/*metabolism/pathology MH - Adipogenesis/drug effects MH - Adipose Tissue/*growth & development MH - Animals MH - Cell Differentiation/drug effects/genetics MH - Diet, Fat-Restricted MH - *Diet, High-Fat MH - Female MH - Humans MH - Hyperplasia MH - Hypertrophy MH - Male MH - Matrix Metalloproteinase 3/*genetics/metabolism/pharmacology MH - Mice MH - Mice, Inbred C57BL MH - Obesity/*genetics/metabolism MH - RNA, Messenger/*metabolism MH - Recombinant Proteins/pharmacology MH - Tissue Inhibitor of Metalloproteinases/*genetics/metabolism/pharmacology MH - Tissue Inhibitor of Metalloproteinase-4 PMC - PMC5283879 OTO - NOTNLM OT - adipocyte size OT - adipose progenitor OT - hyperplasia OT - matrix metalloproteinase 3 OT - tissue inhibitor of matrix metalloproteinase 4 EDAT- 2016/11/24 06:00 MHDA- 2017/06/21 06:00 PMCR- 2018/01/01 CRDT- 2016/11/24 06:00 PHST- 2016/04/01 00:00 [received] PHST- 2016/10/26 00:00 [revised] PHST- 2016/11/08 00:00 [accepted] PHST- 2016/11/24 06:00 [pubmed] PHST- 2017/06/21 06:00 [medline] PHST- 2016/11/24 06:00 [entrez] PHST- 2018/01/01 00:00 [pmc-release] AID - ajpendo.00128.2016 [pii] AID - E-00128-2016 [pii] AID - 10.1152/ajpendo.00128.2016 [doi] PST - ppublish SO - Am J Physiol Endocrinol Metab. 2017 Jan 1;312(1):E58-E71. doi: 10.1152/ajpendo.00128.2016. Epub 2016 Nov 22.