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Table 1 The introduction of hydrogels in the treatment of gastrointestinal tumors

From: Innovative theranostic hydrogels for targeted gastrointestinal cancer treatment

Hydrogel

Cancer

Remark

References

Hydrogel microsphere vaccine

Pancreatic cancer

Release of FLT3L and CD40L at acidic pH to enhance migration of dendritic cells to lymph nodes for enhancing anti-cancer immunity

[25]

PLGA-PEG-PLGA hydrogel

Pancreatic cancer

Injectable and biocompatible hydrogels for the delivery of gemcitabine in enhancing apoptosis an dreducing proliferation

[229]

sulfhydryl-hyaluronic acid-dopamine hydrogel

Pancreatic cancer

Loaded with polydopamine-cloaked cytokine interleukin-15 and platelets conjugated with anti-TIGIT

Increasing number of CD8 + and NK cells to boost anti-cancer immunity

[208]

PVLA-PEG-PVLA hydrogel

Pancreatic cancer

Delivery of liposomes consisting of paclitaxel and gemcitabine to suppress progression

[172]

GelMA/SilMA hydrogel

Colorectal cancer

Loading curcumin-shellac nanoparticles within the structure of hydrogels

Controlled release through the swelling and degradation of matrix

Increasing cellular uptake of curcumin

[230]

mPEG-luteolin-BTZ@ICG hydrogels

Colorectal cancer

Delivery of indocyanine green and bortezomib to exert combination chemotherapy and photodynamic therapy

Favorable tumor suppression activity

[180]

PEG-PCL-PEG hydrogel

Colorectal cancer

Sustained delivery of 5-fluorouracil to suppress growth and dissemination of tumor cells

[93]

pH-responsive nanohydrogels

Colorectal cancer

Delivery of naringenin

Prolonged and targeted release of bioactive compound in response to pH

[101]

Methyl-cellulose-based injectable hydrogel

Colorectal cancer

Thermo-sensitive feature

Delivery of oxaliplatin

Impairing peritoneal metastasis

[157]

Solid lipid nanoparticle-loaded hydrogels

Colorectal cancer

Loading topotecan in solid lipid nanostructures to embed inside hydrogels for the colorectal delivery

Improved anti-cancer activity

[94]

Magnetic-driven hydrogel microrobots

Colorectal cancer

Improving anti-cancer activity of lycorine hydrochloride to reduce proliferation and mobility along with apoptosis induction

[95]

Thermosensitive hydrogels

Colorectal cancer

Loading 5-fluorouracil-embedded micelles and cisplatin inside the hydrogels

Reduction in proliferation and invasion

Improving survival rate

[158]

Injectable hydrogel

Hepatocellular carcinoma

Development of hydrogels from branched polyethyleneimine-g-poly (ethylene glycol), poly (ethylene oxide) and poly (propylene oxide) block copolymers and α-CD (PPA/CD)

Delivery of ABHD5 siRNA to improve gene transfection efficiency and mediate apoptosis

[201]

Injectable hydrogel

Hepatocellular carcinoma

Development of hydrogels from dextran and chitosan

Stimulation of ferroptosis and increasing M1 polarization of macrophages to boost immunotehrapy

[203]

Magnetic hydrogels

Hepatocellular carcinoma

Thermo-sensitive feature and ability in decreasing postoperative recurrence rate

[231]

Nanohydrogel

Hepatocellular carcinoma

The development of hydrogels from algin/polyethyleneimine

Delivery of miR-192 to downregulate Wnt expression

[228]

Injectable thermosensitive hydrogel

Hepatocellular carcinoma

Delivery of GalNAc-siRNA and DP7-C nanostructures by hydrogels

Endosomal escape in hepatocytes

Suppressing tumor expression and controlling Pin1 expression

[227]

Thermosensitive hydrogel

Hepatocellular carcinoma

Loading norcantharidin nanoparticles and oxaliplatin within the hydrogels to disrupt angiogenesis and proliferation and improve the survival of animal model

[232]

Thermosensitive hydrogel

Hepatocellular carcinoma

Loading norcantharidin nanostructures and doxorubicin inside the hydrogels to reduce proliferation and angiogenesis

[233]

GelMA/PVA hydrogel

Hepatocellular carcinoma

Suppressing β-klotho/HDAC3 axis to reduce progression of cancers

[234]

Alginate hydrogel

Hepatocellular carcinoma

Loading MSA-2 as STING agonist inside the hydrogels to enhance M1 polarization of macrophages and enhance dendritic cell maturation

Promoting the infiltration of lymphocytes in cancer immunotherapy

[235]

Injectable nanocomposite-hydrogel

Hepatocellular carcinoma

Gradual release of lactate oxidase (LOX)-loaded hollow mesoporous MnO2 nanostructures to reduce levels of lactate

Reversing immunosuppressive tumor microenvironment and exerting combination with immunotherapy

[236]

Magnetic colloidal hydrogel

Hepatocellular carcinoma

The development of hydrogels based on a binary system comprising super-paramagnetic Fe3O4 nanoparticles and gelatin nanoparticles

Extruding through percutaneous needle and self-healing activity

The generation of heat

[237]

4armPEGDA and N-carboxyethyl chitosan hydrogels

Hepatocellular carcinoma

pH-sensitive feature an self-healing property

Loading doxorubicin on hydrogels to impair cancer growth

[238]

Thermo-sensitive hydrogel

Hepatocellular carcinoma

Development of hydrogels from F127 and loading with doxorubicin and Au-MnO-L nanostructures

Exerting photothermal activity

Injectable feature

Sustained drug release

Combination of chemotherapy and photothermal therapy

[239]

Acrylate-based hydrogels

Hepatocellular carcinoma

High biocompatibility and delivery of doxorubicin to exert anti-cancer activity

[240]

Nanocomposite hydrogel

Hepatocellular carcinoma

Development of hydrogels from PDLLA-PEG-PDLLA to induce toxicity of dendritic cells and lymphocytes

[241]

PDLLA-PEG-PDLLA hydrogels

Hepatocellular carcinoma

Thermo-sensitive feature and loading norcantharidin inside the structure of hydrogels

Improving retention time of drug

[242]

Thermo-sensitive hydrogel

Hepatocellular carcinoma

Development of hydrogels from PCL-PEG-PCL copolymer

Improving residence time of drug in tumor site

Loading liposomal doxorubicin inside the hydrogels

Reducing tumor growth

[243]

Thermosensitive injectable hydrogel

Hepatocellular carcinoma

Development of hydrogels based on PECT

Increased anti-cancer activity of embelin

[244]

Thermosensitive injectable hydrogel

Colorectal cancer

The OxP/R848@PLEL hydrogels can provide synergistic anti-cancer activity of oxaliplatin and resiquimod (R848_ to enhance dendritic cells maturation and promote the expansion of T lymphocytes

[187]

Natural hydrogels

Colorectal cancer

Development of hydrogels from alginate and sodium carboxymethyl cellulose with pH-sensitive feature to deliver aspitin and methotrexate

[84]

Thermosensitive hydrogel

Colorectal cancer

The thermosensitive hydrogels were prepared based on the features of poloxamers P407 and P188 to deliver 5-fluorouracil in impairing cancer growth

[156]

Injectable biodegradable hydrogels

Colorectal cancer

Targeted delivery of avastin

Development of hydrogels from vitamin D-functionalized polycarbonates

[86]

HP-β-CD/agarose-g-poly(MAA) hydrogel

Colorectal cancer

pH-sensitive feature

Favorable biocompatibility

Delivery of capecitabine in colorectal cancer therapy

[245]

Cisplatin hydrogel

Gastric cancer

Improving survival time of animal model

Reducing tumor growth and metastasis

[107]

Thermosensitive hydrogel

Gastric cancer

Co-delivery of 5-fluorouracil and cis-platinum to exert synergistic impact in suppressing recurrence and growth of metastatic tumors

[108]

Albumin hydrogel

Gastric cancer

Loading paclitaxel in red blood cell membrane nanostructures and their inclusion in hydrogels

Favorable biocompatibility and biodegradability

Induction of chemotherapy

[114]

Thermosensitive hydrogel

Gastric cancer

Development of hydrogels from poly (organophosphazene) (PPZ) to deliver docetaxel

Reduction in tumor growth

Impairing peritoneal metastasis

[161]

Thermosensitive hydrogel

Gastric cancer

The linoleic acid-incorporated poloxamer hydrogels have been loaded with docetaxel to impair peritoneal metastasis

[162]

Natural hydrogel

Gastric cancer

Intraperitoneal delivery of cisplatin using hyaluronan-based nanogels to suppress peritoneal dissemination of tumor cells

[116]

Thermosensitive hydrogel

Gastric cancer

Loading gambogic acid nanostructures and iRGD as peptide inside the hydrogels

High anti-cancer activity

[163]

Injectable hydrogels

Gastric cancer

The polylysine hydrogels can deliver polyphyllin II (PP2) and resiquimod (R848) (PR-Gel) to induce M1 polarization of macrophages in cancer immunotherapy

[196]

In-situ forming hydrogels

Gastric cancer

The prolonged release of siRNA/PEI complex from hydrogels can reduce the levels of id1 to suppress cancer progression

[224]

Natural hydrogels

Colorectal cancer

Development of hydrogels from hyaluronic acid and carboxymethyl cellulose sodium

Prolonged release of oxaliplatin

Providing intraperitoneal chemotherapy

[78]

Composite hydrogels

Colorectal cancer

Development of composite hydrogels from sonosensitizer protoporphyrin IX-conjugated manganese oxide (MnO2) nanoparticles and a glutathione (GSH) inhibitor after Ca2+ induced in situ gelation in the tumor site

Amelioration of hypoxia through generation of oxygen

Enhancing the levels of ROS

[181]

PLGA microparticle-loaded hydrogels

Colorectal cancer

Delivery of oxaliplatin and improving pharmacokinetic profile

Sustained drug release

[79]