Nanobubbles

1. A synergistic treatment regimen for a non-muscle invasive bladder cancer (NMIBC) tumor, comprising administering synthesized oxygen nanobubbles (ONBs) to a site of bladder tumor, wherein said ONBs each comprises a gaseous molecular oxygen core surrounded by a cellulosic polymer shell, wherein said core-shell structure is capable to force a light to deviate from its linear trajectory to generate light scattering, wherein said synthesized ONBs are sized between about 400 nm to about 800 nm, the cellulosic polymer shell comprises a reaction product of a crosslinker and carboxymethyl cellulose (CMC) material, and the crosslinker has a concentration of 0.1% to 1.0%, and the carboxymethyl cellulose (CMC) material has a concentration of 0.1% to 1.0%, the ONBs further encapsulate at least one of a therapeutic drug and a florescence imaging agent, and the synthesized ONBs with drug encapsulation are guided by applying ultrasound beam and precisely steering the encapsulated drug to hypoxia regions of the NMIBC tumor.

2. The treatment regimen according to claim 1 , wherein the therapeutic drug is Mitomycin-C (MMC), and the dose of therapeutic drug (MMC) encapsulated in ONBs is reduced to about half compared to MMC treatment alone to the bladder tumor.

3. The treatment regimen according to claim 1 , wherein the ONBs travel to hypoxia regions of the bladder tumor with maximum velocity about 30 mm/s to about 40 mm/s.

4. The treatment regimen according to claim 1 , wherein the synthesized ONBs reverts hypoxia condition in said NMIBC tumors.

5. The treatment regimen for NMIBC of claim 1 , wherein said therapeutic drug is bacillus Calmette-Guerin (BCG), or mitomycin-C (MMC), and said therapeutic drug is encapsulated within said ONBs.

6. The treatment regimen for NMIBC of claim 1 , wherein the carboxymethyl cellulose (CMC) material comprises sodium carboxymethylcellulose, and the crosslinker comprises aluminum chloride.