# Crosstalk Between Leptin and Adiponectin in Colorectal Cancer: Molecular Mechanisms and Oncogenic Pathways

**Authors:** Svetla Slavova, Yoana Kiselova-Kaneva, Diana Ivanova, Deyana Vankova

PMC · DOI: 10.3390/ijms27041789 · International Journal of Molecular Sciences · 2026-02-13

## TL;DR

This paper explores how leptin and adiponectin influence colorectal cancer through different molecular pathways, offering insights into their opposing roles in cancer development.

## Contribution

The study provides a comprehensive overview of leptin and adiponectin signaling in colorectal cancer, emphasizing their contrasting effects on tumorigenesis.

## Key findings

- Leptin promotes CRC via JAK2/STAT3 and PI3K/Akt/mTOR pathways.
- Adiponectin inhibits CRC through AMPK and PPARα activation.
- The crosstalk between these adipokines is critical in CRC progression.

## Abstract

Colorectal cancer (CRC) remains one of the most common malignancies worldwide with relatively high levels of morbidity and mortality. Current data demonstrate the significant role of adipokines, in particular leptin and adiponectin, in CRC pathogenesis and progression. Both adipokines exert pleiotropic activities and often possess opposing physiological effects. The main goal of this study was to provide a comprehensive overview of current knowledge regarding the complex relationship between leptin and adiponectin signaling and tumorigenesis with a specific focus on CRC. The pro-tumorigenic role of leptin in CRC has been highly emphasized by recent reports, primarily by activation of JAK2/STAT3 and PI3K/Akt/mTOR signaling pathways. In contrast, adiponectin has been shown to demonstrate an anti-tumorigenic role mainly because of activation of AMPK and PPARα signaling cascades. Focusing on the current advances in the field of adipokines’ signaling, we highlighted the latest achievements in understanding their role in colorectal malignancy.

## Linked entities

- **Proteins:** lepa (leptin a), JAK2 (Janus kinase 2), STAT3 (signal transducer and activator of transcription 3), PIK3CA (phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha), AKT1 (AKT serine/threonine kinase 1), MTOR (mechanistic target of rapamycin kinase), PRKAA1 (protein kinase AMP-activated catalytic subunit alpha 1), PPARA (peroxisome proliferator activated receptor alpha)
- **Diseases:** colorectal cancer (MONDO:0005575), CRC (MONDO:0005575)

## Full-text entities

- **Genes:** VEGFA (vascular endothelial growth factor A) [NCBI Gene 7422] {aka L-VEGF, MVCD1, VEGF, VPF}, ADIPOQ (adiponectin, C1Q and collagen domain containing) [NCBI Gene 9370] {aka ACDC, ACRP30, ADIPQTL1, ADPN, APM-1, APM1}, LEPR (leptin receptor) [NCBI Gene 3953] {aka CD295, LEP-R, LEPRD, OB-R, OBR, huB219}, TP53 (tumor protein p53) [NCBI Gene 7157] {aka BCC7, BMFS5, LFS1, P53, TRP53}, PRKAB1 (protein kinase AMP-activated non-catalytic subunit beta 1) [NCBI Gene 5564] {aka AMPK, HAMPKb}, CDH13 (cadherin 13) [NCBI Gene 1012] {aka CDHH, P105}, NFKB1 (nuclear factor kappa B subunit 1) [NCBI Gene 4790] {aka CVID12, EBP-1, KBF1, NF-kB, NF-kB1, NF-kappa-B1}, PKM (pyruvate kinase M1/2) [NCBI Gene 5315] {aka CTHBP, HEL-S-30, OIP3, PK3, PKM2, TCB}, INS (insulin) [NCBI Gene 3630] {aka IDDM, IDDM1, IDDM2, ILPR, IRDN, MODY10}, CNTF (ciliary neurotrophic factor) [NCBI Gene 1270] {aka HCNTF}, LIF (LIF interleukin 6 family cytokine) [NCBI Gene 3976] {aka CDF, DIA, HILDA, MLPLI}, APC (APC regulator of Wnt signaling pathway) [NCBI Gene 324] {aka BTPS2, DESMD, DP2, DP2.5, DP3, GS}, APPL1 (adaptor protein, phosphotyrosine interacting with PH domain and leucine zipper 1) [NCBI Gene 26060] {aka APPL, DIP13alpha, MODY14}, DCTN6 (dynactin subunit 6) [NCBI Gene 10671] {aka WS-3, WS3, p27}, LDHA (lactate dehydrogenase A) [NCBI Gene 3939] {aka GSD11, HEL-S-133P, LDHM, PIG19}, HK1 (hexokinase 1) [NCBI Gene 3098] {aka CNSHA5, HK, HK1-ta, HK1-tb, HK1-tc, HKD}, CDH11 (cadherin 11) [NCBI Gene 1009] {aka CAD11, CDHOB, ESWS, OB, OSF-4, TBHS2}, Il1b (interleukin 1 beta) [NCBI Gene 16176] {aka IL-1beta, Il-1b}, TNF (tumor necrosis factor) [NCBI Gene 7124] {aka DIF, IMD127, TNF-alpha, TNFA, TNFSF2, TNLG1F}, STAT3 (signal transducer and activator of transcription 3) [NCBI Gene 6774] {aka ADMIO, ADMIO1, APRF, HIES}, IL1A (interleukin 1 alpha) [NCBI Gene 3552] {aka IL-1 alpha, IL-1A, IL1, IL1-ALPHA, IL1F1}, AKT1 (AKT serine/threonine kinase 1) [NCBI Gene 207] {aka AKT, PKB, PKB-ALPHA, PRKBA, RAC, RAC-ALPHA}, PTK2B (protein tyrosine kinase 2 beta) [NCBI Gene 2185] {aka CADTK, CAKB, FADK2, FAK2, PKB, PTK}, LEP (leptin) [NCBI Gene 3952] {aka LEPD, OB, OBS}, H3P16 (H3 histone pseudogene 16) [NCBI Gene 644914] {aka H3.6, H3F3AP6, p21}, HK2 (hexokinase 2) [NCBI Gene 3099] {aka HKII, HXK2}, PDP1 (pyruvate dehydrogenase phosphatase catalytic subunit 1) [NCBI Gene 54704] {aka PDH, PDP, PDPC, PDPC 1, PPM2A, PPM2C}, GH1 (growth hormone 1) [NCBI Gene 2688] {aka GH, GH-N, GHB5, GHN, IGHD1A, IGHD1B}, SOCS3 (suppressor of cytokine signaling 3) [NCBI Gene 9021] {aka ATOD4, CIS3, Cish3, SOCS-3, SSI-3, SSI3}, EPO (erythropoietin) [NCBI Gene 2056] {aka DBAL, ECYT5, EP, MVCD2}, MCL1 (MCL1 apoptosis regulator, BCL2 family member) [NCBI Gene 4170] {aka BCL2L3, EAT, MCL1-ES, MCL1L, MCL1S, Mcl-1}, JAK2 (Janus kinase 2) [NCBI Gene 3717] {aka JTK10}, ADIPOR2 (adiponectin receptor 2) [NCBI Gene 79602] {aka ACDCR2, PAQR2}, PRKAA2 (protein kinase AMP-activated catalytic subunit alpha 2) [NCBI Gene 5563] {aka AMPK, AMPK2, AMPKa2, PRKAA}, NR0B1 (nuclear receptor subfamily 0 group B member 1) [NCBI Gene 190] {aka AHC, AHCH, AHX, DAX-1, DAX1, DSS}, SLC2A1 (solute carrier family 2 member 1) [NCBI Gene 6513] {aka CSE, DYT17, DYT18, DYT9, EIG12, GLUT}, CCNL2 (cyclin L2) [NCBI Gene 81669] {aka ANIA-6B, CCNM, CCNS, HCLA-ISO, HLA-ISO, PCEE}, LGR5 (leucine rich repeat containing G protein-coupled receptor 5) [NCBI Gene 8549] {aka FEX, GPR49, GPR67, GRP49, HG38}, PIK3CB (phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit beta) [NCBI Gene 5291] {aka P110BETA, PI3K, PI3KBETA, PIK3C1}, SLC2A4 (solute carrier family 2 member 4) [NCBI Gene 6517] {aka GLUT4}, MTOR (mechanistic target of rapamycin kinase) [NCBI Gene 2475] {aka FRAP, FRAP1, FRAP2, RAFT1, RAPT1, SKS}, Igf1 (insulin-like growth factor 1) [NCBI Gene 16000] {aka C730016P09Rik, Igf-1, Igf-I}, ADIPOR1 (adiponectin receptor 1) [NCBI Gene 51094] {aka ACDCR1, CGI-45, CGI45, PAQR1, TESBP1A}, PPARA (peroxisome proliferator activated receptor alpha) [NCBI Gene 5465] {aka NR1C1, PPAR, PPAR-alpha, PPARalpha, hPPAR}, Tnf (tumor necrosis factor) [NCBI Gene 21926] {aka DIF, TNF-a, TNF-alpha, TNFSF2, TNFalpha, Tnfa}, PIK3R1 (phosphoinositide-3-kinase regulatory subunit 1) [NCBI Gene 5295] {aka AGM7, GRB1, IMD36, p85, p85-ALPHA, p85alpha}, CRP (C-reactive protein) [NCBI Gene 1401] {aka PTX1}, IL6 (interleukin 6) [NCBI Gene 3569] {aka BSF-2, BSF2, CDF, HGF, HSF, IFN-beta-2}
- **Diseases:** squamous cell carcinomas (MESH:D002294), colon tumors (MESH:D003110), genetic abnormalities (MESH:D030342), metabolic disorder (MESH:D008659), adenoma (MESH:D000236), overweight (MESH:D050177), colorectal carcinogenesis (MESH:D063646), Obesity (MESH:D009765), undifferentiated tumors (MESH:D002277), pituitary adenomas (MESH:D010911), diabetes (MESH:D003920), Tumors (MESH:D009369), adenocarcinomas (MESH:D000230), injury to (MESH:D014947), bowel inflammation (MESH:D007249), osteosarcoma (MESH:D012516), hyperglycemia (MESH:D006943), metabolic disturbances (MESH:D024821), nasopharyngeal carcinoma (MESH:D000077274), hepatocellular carcinomas (MESH:D006528), gastrointestinal malignancies (MESH:D005770), associated (MESH:D018886), type 2 diabetes (MESH:D003924), lymph node (MESH:D000072717), lymph node and liver metastases (MESH:D008207), polyps (MESH:D011127), malignant B cell lymphomas (MESH:D016393), adiposity (MESH:D018205), breast cancer (MESH:D001943), insulin resistance (MESH:D007333), infertility (MESH:D007246), tumorigenic (MESH:D002471), hyperinsulinemia (MESH:D006946), endometrial cancer (MESH:D016889), Colorectal Cancer (MESH:D015179), adenomatous polyps (MESH:D018256), metastases (MESH:D009362)
- **Chemicals:** cholesterol (MESH:D002784), blood sugar (MESH:D001786), ceramide (MESH:D002518), free fatty acids (MESH:D005230), testosterone (MESH:D013739), glycogen (MESH:D006003), 5-fluorouracil (MESH:D005472), phospholipids (MESH:D010743), triglyceride (MESH:D014280), pentose phosphate (MESH:D010428), lactate (MESH:D019344), pyruvate (MESH:D019289), glucose (MESH:D005947), hexosamine (MESH:D006595), lipid (MESH:D008055), AMP (MESH:D000249), ATP (MESH:D000255), carbohydrate (MESH:D002241), fatty acid (MESH:D005227), amino acids (MESH:D000596), cisplatin (MESH:D002945)
- **Species:** Mus musculus (house mouse, species) [taxon 10090], Homo sapiens (human, species) [taxon 9606]
- **Cell lines:** HCT116 — Homo sapiens (Human), Colon carcinoma, Cancer cell line (CVCL_0291), LoVo — Homo sapiens (Human), Colon adenocarcinoma, Cancer cell line (CVCL_0399), HT29 — Homo sapiens (Human), Colon adenocarcinoma, Cancer cell line (CVCL_0320)

## Full text

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## Figures

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## References

155 references — full list in the complete paper: https://tomesphere.com/paper/PMC12941233/full.md

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Source: https://tomesphere.com/paper/PMC12941233