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| Compound of black pepper that boosts bioavailability of curcumin piperine’s bioenhancing function, often more important than piperine’s direct anticancer activity Mechanisms of bioenhancement | Mechanism | Effect | | ----------------------------- | ---------------------------------- | | **↓ CYP3A4, CYP2C9** | Slows metabolic clearance | | **↓ UGT (glucuronidation)** | Increases parent compound exposure | | **↓ P-glycoprotein (ABCB1)** | Improves intracellular retention | | **↑ Intestinal permeability** | Better oral absorption | -Curcumin: ↑ bioavailability ~20–30× -Resveratrol, EGCG, quercetin: ↑ exposure 2–10× Primary pathways: NF-κB, STAT3, PI3K/Akt/mTOR, apoptosis, EMT Direct anticancer potency: modest Bioenhancing value: central and often dominant
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| 5212- | CAP, | PI, | Chemo, | Capsaicin and Piperine Can Overcome Multidrug Resistance in Cancer Cells to Doxorubicin |
| - | in-vitro, | Colon, | Caco-2 |
| 3586- | CUR, | PI, | Influence of piperine on the pharmacokinetics of curcumin in animals and human volunteers |
| - | in-vivo, | NA, | NA |
| 3582- | CUR, | PI, | Therapeutic and Preventive Effects of Piperine and its Combination with Curcumin as a Bioenhancer Against Aluminum-Induced Damage in the Astrocyte Cells |
| - | in-vitro, | AD, | SH-SY5Y |
| 3760- | CUR, | GI, | CAP, | RosA, | PI | Extending the lore of curcumin as dipteran Butyrylcholine esterase (BChE) inhibitor: A holistic molecular interplay assessment |
| 649- | EGCG, | CUR, | PI, | Targeting Cancer Hallmarks with Epigallocatechin Gallate (EGCG): Mechanistic Basis and Therapeutic Targets |
| - | Review, | Var, | NA |
| 646- | EGCG, | PI, | Piperine enhances the bioavailability of the tea polyphenol (-)-epigallocatechin-3-gallate in mice |
| - | in-vivo, | Nor, | NA |
| 3597- | PI, | Chronic diseases, inflammation, and spices: how are they linked? |
| - | Review, | AD, | NA | - | Review, | Park, | NA | - | Review, | Var, | NA |
| 5216- | PI, | doxoR, | Piperine enhances doxorubicin sensitivity in triple-negative breast cancer by targeting the PI3K/Akt/mTOR pathway and cancer stem cells |
| - | vitro+vivo, | BC, | MDA-MB-231 |
| 3598- | PI, | Piperine attenuates cognitive impairment in an experimental mouse model of sporadic Alzheimer's disease |
| - | in-vivo, | AD, | NA |
| 3599- | PI, | Piperine, the main alkaloid of Thai black pepper, protects against neurodegeneration and cognitive impairment in animal model of cognitive deficit like condition of Alzheimer's disease |
| - | in-vivo, | AD, | NA |
| 3600- | PI, | Intranasal piperine-loaded chitosan nanoparticles as brain-targeted therapy in Alzheimer's disease: optimization, biological efficacy, and potential toxicity |
| - | in-vivo, | AD, | NA |
| 4220- | PI, | Piperine ameliorated memory impairment and myelin damage in lysolecethin induced hippocampal demyelination |
| - | in-vivo, | AD, | NA | - | in-vivo, | MS, | NA |
| 4221- | PI, | Piperine-like alkamides from Piper nigrum induce BDNF promoter and promote neurite outgrowth in Neuro-2a cells |
| - | in-vitro, | NA, | NA |
| 4222- | PI, | Potential of piperine for neuroprotection in sepsis-associated encephalopathy |
| - | in-vivo, | Sepsis, | NA |
| 5208- | PI, | Piperine Inhibits Cell Proliferation and Induces Apoptosis of Human Gastric Cancer Cells by Downregulating Phosphatidylinositol 3-Kinase (PI3K)/Akt Pathway |
| - | in-vitro, | GC, | SNU16 | - | in-vitro, | Nor, | GES-1 |
| 5209- | PI, | Piperine depresses the migration progression via downregulating the Akt/mTOR/MMP-9 signaling pathway in DU145 cells |
| - | in-vitro, | Pca, | DU145 |
| 5210- | PI, | Piperine is a potent inhibitor of nuclear factor-kappaB (NF-kappaB), c-Fos, CREB, ATF-2 and proinflammatory cytokine gene expression in B16F-10 melanoma cells |
| - | in-vitro, | Melanoma, | B16-BL6 |
| 5211- | PI, | Piperine inhibits colorectal cancer migration and invasion by regulating STAT3/Snail-mediated epithelial-mesenchymal transition |
| - | in-vitro, | CRC, | NA |
| 5213- | PI, | Induction of apoptosis by piperine in human cervical adenocarcinoma via ROS mediated mitochondrial pathway and caspase-3 activation |
| - | in-vitro, | Cerv, | HeLa |
| 5214- | PI, | Piperine induces autophagy of colon cancer cells: Dual modulation of AKT/mTOR signaling pathway and ROS production |
| - | vitro+vivo, | CRC, | HCT116 | - | in-vitro, | CRC, | SW48 | - | in-vitro, | CRC, | SW-620 |
| 5215- | PI, | Piperine impairs cell cycle progression and causes reactive oxygen species-dependent apoptosis in rectal cancer cells |
| - | in-vitro, | CRC, | NA |
| 3595- | PI, | Black pepper and health claims: a comprehensive treatise |
| - | Review, | Var, | NA | - | Review, | AD, | NA |
| 925- | PI, | Bioenhancers from mother nature and their applicability in modern medicine |
| - | Review, | Nor, | NA |
| 1016- | PI, | Piperine suppresses the Wnt/β-catenin pathway and has anti-cancer effects on colorectal cancer cells |
| - | in-vitro, | CRC, | HCT116 | - | in-vitro, | CRC, | SW480 | - | in-vitro, | CRC, | DLD1 |
| 1059- | PI, | Piperine Inhibits TGF-β Signaling Pathways and Disrupts EMT-Related Events in Human Lung Adenocarcinoma Cells |
| - | in-vitro, | Lung, | A549 | - | in-vitro, | BC, | MDA-MB-231 | - | in-vitro, | Liver, | HepG2 |
| 1131- | PI, | Piperlongumine‑loaded nanoparticles inhibit the growth, migration and invasion and epithelial‑to‑mesenchymal transition of triple‑negative breast cancer cells |
| - | in-vitro, | BC, | MDA-MB-231 | - | in-vitro, | BC, | BT549 |
| - | in-vitro, | NA, | NA |
| 1163- | PI, | The Effect of Piperine on MMP-9, VEGF, and E-cadherin Expression in Breast Cancer MCF-7 Cell Line |
| - | in-vitro, | BC, | MC38 |
| 1164- | PI, | Inhibition of T cell activation by the phytochemical piperine |
| - | in-vitro, | Nor, | NA |
| 1165- | PI, | Piperine inhibits IL-1β-induced IL-6 expression by suppressing p38 MAPK and STAT3 activation in gastric cancer cells |
| - | in-vitro, | GC, | TMK-1 |
| 1254- | PI, | VitC, | Piperlongumine combined with vitamin C as a new adjuvant therapy against gastric cancer regulates the ROS–STAT3 pathway |
| - | in-vivo, | GC, | NA |
| 1255- | PI, | ALA, | Antileukemic effects of piperlongumine and alpha lipoic acid combination on Jurkat, MEC1 and NB4 cells in vitro |
| - | in-vitro, | CLL, | NA |
| 1256- | PI, | Hypoxia potentiates the cytotoxic effect of piperlongumine in pheochromocytoma models |
| - | in-vitro, | adrenal, | PHEO | - | in-vivo, | NA, | NA |
| 1257- | PI, | Piperlongumine attenuates bile duct ligation-induced liver fibrosis in mice via inhibition of TGF-β1/Smad and EMT pathways |
| - | ex-vivo, | LiverDam, | NA |