# Immunomodulatory Effects of Flavonoids in Colitis-Associated Colorectal Cancer

**Authors:** Sonia H. Navia, Libia Vega, Tonathiu Rodríguez, Miriam Rodríguez-Sosa

PMC · DOI: 10.3390/ijms27041883 · International Journal of Molecular Sciences · 2026-02-15

## TL;DR

This review explores how flavonoids, found in plants and fruits, affect inflammation and cancer in the colon, particularly in colitis-related colorectal cancer.

## Contribution

The paper provides a comprehensive overview of dietary flavonoids' roles in mitigating colon inflammation and their potential impact on cancer progression.

## Key findings

- Flavonoids help reduce inflammation by modulating the gut microbiota and protecting against oxidative stress.
- Chronic inflammation can lead to cancer, and flavonoids may influence immune evasion and tumor growth in this context.
- Flavonoids offer potential for treating colitis and preventing colorectal cancer when used rationally.

## Abstract

Flavonoids present in plants and fruits have been used in traditional medicine to reduce inflammation under various inflammatory conditions, including colitis. The pharmacological mechanisms that regulate intestinal inflammation are associated with the colonic microbiota, protection against oxidative stress, preservation of epithelial barrier function, and immune homeostasis. This review describes the main flavonoids present in the diet and examines their role in mitigating colon inflammation, as well as their impact when chronic inflammation progresses to colitis-associated colorectal cancer (CAC), in which flavonoids may promote immune evasion and tumor growth. Understanding the effects of flavonoids on colon physiology offers an opportunity to use these compounds rationally in the treatment of colitis and prevention of the development of colorectal cancer (CRC).

## Linked entities

- **Diseases:** colitis (MONDO:0005292), colorectal cancer (MONDO:0005575)

## Full-text entities

- **Genes:** Il22 (interleukin 22) [NCBI Gene 50929] {aka IL-22, IL-22a, ILTIFa, If2b1, Iltif}, Egf (epidermal growth factor) [NCBI Gene 13645], Tlr4 (toll-like receptor 4) [NCBI Gene 21898] {aka Lps, Ly87, Ran/M1, Rasl2-8}, Il33 (interleukin 33) [NCBI Gene 77125] {aka 9230117N10Rik, Il-33, Il1f11, NF-HEV}, TGFB1 (transforming growth factor beta 1) [NCBI Gene 7040] {aka CAEND1, CED, DPD1, IBDIMDE, LAP, TGF-beta1}, Cxcl2 (C-X-C motif chemokine ligand 2) [NCBI Gene 20310] {aka CINC-2a, GROb, Gro2, MIP-2, MIP-2a, Mgsa-b}, Cxcl1 (C-X-C motif chemokine ligand 1) [NCBI Gene 14825] {aka Fsp, Gro1, KC, Mgsa, N51, Scyb1}, Stat1 (signal transducer and activator of transcription 1) [NCBI Gene 20846] {aka 2010005J02Rik}, Il4 (interleukin 4) [NCBI Gene 16189] {aka BSF-1, Il-4}, Nos2 (nitric oxide synthase 2, inducible) [NCBI Gene 18126] {aka MAC-NOS, NOS-II, Nos-2, Nos2a, i-NOS, iNOS}, COX1 (cytochrome c oxidase subunit I) [NCBI Gene 17708] {aka CoxI}, Il13 (interleukin 13) [NCBI Gene 16163] {aka Il-13}, Ccnd1 (cyclin D1) [NCBI Gene 12443] {aka CycD1, Cyl-1, PRAD1, bcl-1, cD1}, Cat (catalase) [NCBI Gene 12359] {aka 2210418N07, Cas-1, Cas1, Cs-1}, Txn1 (thioredoxin 1) [NCBI Gene 22166] {aka ADF, Trx1, Txn}, Mapk8 (mitogen-activated protein kinase 8) [NCBI Gene 26419] {aka JNK, JNK1, Prkm8, SAPK1}, Tnf (tumor necrosis factor) [NCBI Gene 21926] {aka DIF, TNF-a, TNF-alpha, TNFSF2, TNFalpha, Tnfa}, Il23a (interleukin 23, alpha subunit p19) [NCBI Gene 83430] {aka IL-23, p19}, Ocln (occludin) [NCBI Gene 18260] {aka Ocl}, Mpo (myeloperoxidase) [NCBI Gene 17523] {aka mKIAA4033}, Cldn1 (claudin 1) [NCBI Gene 12737], Nfkb1 (nuclear factor of kappa light polypeptide gene enhancer in B cells 1, p105) [NCBI Gene 18033] {aka NF-KB1, NF-kappaB, NF-kappaB1, p105, p50, p50/p105}, Nfe2l2 (nuclear factor, erythroid derived 2, like 2) [NCBI Gene 18024] {aka Nrf2}, Mapk14 (mitogen-activated protein kinase 14) [NCBI Gene 26416] {aka CSBP2, Crk1, Csbp1, Mxi2, PRKM14, PRKM15}, Stat6 (signal transducer and activator of transcription 6) [NCBI Gene 20852], Il17a (interleukin 17A) [NCBI Gene 16171] {aka Ctla-8, Ctla8, IL-17, IL-17A, Il17}, Ccl2 (C-C motif chemokine ligand 2) [NCBI Gene 20296] {aka HC11, JE, MCAF, MCP-1, MCP1, SMC-CF}, Ctnnb1 (catenin beta 1) [NCBI Gene 12387] {aka Bfc, Catnb, Mesc}, Ptger4 (prostaglandin E receptor 4 (subtype EP4)) [NCBI Gene 19219] {aka EP4, Ptgerep4}, Jun (Jun proto-oncogene, AP-1 transcription factor subunit) [NCBI Gene 16476] {aka AP-1, Junc, c-jun}, Prdx6-ps2 (peroxiredoxin 6 pseudogene 2) [NCBI Gene 384001] {aka Aop2-rs2, GPx*, Prdx6-rs2}, Cox4i1 (cytochrome c oxidase subunit 4I1) [NCBI Gene 12857] {aka COX, COX IV-1, COXIV, Cox4, Cox4a, IV-1}, Il1b (interleukin 1 beta) [NCBI Gene 16176] {aka IL-1beta, Il-1b}, IL10 (interleukin 10) [NCBI Gene 3586] {aka CSIF, GVHDS, IL-10, IL10A, TGIF}, Cdk6 (cyclin dependent kinase 6) [NCBI Gene 12571] {aka Crk2}, Pik3r1 (phosphoinositide-3-kinase regulatory subunit 1) [NCBI Gene 18708] {aka PI3K, p50alpha, p55alpha, p85alpha}, Tjp1 (tight junction protein 1) [NCBI Gene 21872] {aka ZO1}, Ccna2 (cyclin A2) [NCBI Gene 12428] {aka Ccn-1, Ccn1, Ccna, CycA2, Cyca}, Nfkbia (nuclear factor of kappa light polypeptide gene enhancer in B cells inhibitor, alpha) [NCBI Gene 18035] {aka Nfkbi}, Cxcl15 (C-X-C motif chemokine ligand 15) [NCBI Gene 20309] {aka Il8, Scyb15, lungkine, weche}, Il18 (interleukin 18) [NCBI Gene 16173] {aka Igif, Il-18}, Rela (Rela proto-oncogene, NFKB subunit) [NCBI Gene 19697] {aka p65, p65 NF-kappa B, p65 NFkB}, Lox (lysyl oxidase) [NCBI Gene 16948] {aka TSC-160, rrg}, Il6 (interleukin 6) [NCBI Gene 16193] {aka Il-6}, Ptger2 (prostaglandin E receptor 2 (subtype EP2)) [NCBI Gene 19217] {aka EP2, Ptgerep2}, Ahr (aryl-hydrocarbon receptor) [NCBI Gene 11622] {aka Ah, Ahh, Ahre, In, bHLHe76}, Akt1 (Akt serine/threonine kinase 1) [NCBI Gene 11651] {aka Akt, LTR-akt, PKB, PKB/Akt, PKBalpha, Rac}, Stat3 (signal transducer and activator of transcription 3) [NCBI Gene 20848] {aka 1110034C02Rik, Aprf}, Ifng (interferon gamma) [NCBI Gene 15978] {aka IFN-g, If2f, Ifg}, COX2 (cytochrome c oxidase subunit II) [NCBI Gene 17709]
- **Diseases:** Crohn's disease (MESH:D003424), cancer (MESH:D009369), Colitis (MESH:D003092), Intestinal dysbiosis (MESH:D064806), abdominal pain (MESH:D015746), rectal bleeding (MESH:D012002), edema (MESH:D004487), ulcers (MESH:D014456), chronic inflammation (MESH:D007249), injury to (MESH:D014947), metastasis (MESH:D009362), fibrosis (MESH:D005355), carcinogens (MESH:D011230), death (MESH:D003643), CRC (MESH:D015179), dysplasia (MESH:D015792), fever (MESH:D005334), tissue damage (MESH:D017695), UC (MESH:D003093), chronic (MESH:D002908), Proinflammatory Cytokines (MESH:D000080424), IBD (MESH:D015212), mucosal damage (MESH:D052016), polyps (MESH:D011127), intestinal obstruction (MESH:D007415), gastrointestinal tract inflammation (MESH:D005770), carcinogenesis (MESH:D063646), diarrhea (MESH:D003967), CAC (MESH:D000083023)
- **Chemicals:** isoflavones (MESH:D007529), Quercetin (MESH:D011794), flavanones (MESH:D044950), MDA (MESH:D008315), rutin (MESH:D012431), flavonols (MESH:D044948), EGCG (MESH:C045651), Eicosanoids (MESH:D015777), flavan-3-ols (MESH:C404987), gamma-glutamylcysteinyl glycine (-), oxygen (MESH:D010100), luteolin (MESH:D047311), flavones (MESH:D047309), aglycone (MESH:C458179), Flavylium (MESH:D000872), RNS (MESH:D011886), NO (MESH:D009569), Flavonoid (MESH:D005419), baicalein (MESH:C006680), ROS (MESH:D017382), baicalin (MESH:C038044), ATP (MESH:D000255), polyphenol (MESH:D059808), hesperetin (MESH:C013015), peroxynitrite (MESH:D030421), GSH (MESH:D005978), luminal (MESH:D010634), myricetin (MESH:C040015), arachidonic acid (MESH:D016718), LPS (MESH:D008070), PGE2 (MESH:D015232), apigenin (MESH:D047310), naringenin (MESH:C005273), genistein (MESH:D019833)
- **Species:** Mus musculus (house mouse, species) [taxon 10090], Bacteria Latreille et al. 1825 (Bacteria stick insect, genus) [taxon 629395], Homo sapiens (human, species) [taxon 9606], Parvimonas (genus) [taxon 543311], Bifidobacterium (genus) [taxon 1678], Clostridioides difficile (species) [taxon 1496], Akkermansia muciniphila (species) [taxon 239935], Escherichia coli (E. coli, species) [taxon 562], Peptostreptococcus anaerobius (species) [taxon 1261], Enterococcus faecalis (species) [taxon 1351], Fusobacterium nucleatum (species) [taxon 851]

## Full text

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## Figures

12 figures with captions in the complete paper: https://tomesphere.com/paper/PMC12941120/full.md

## References

164 references — full list in the complete paper: https://tomesphere.com/paper/PMC12941120/full.md

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Source: https://tomesphere.com/paper/PMC12941120